UMECO LTM 210 SERIES TOOLING PREPREGS

Transcription

1 UMECO LTM 210 SERIES TOOLING PREPREGS Product Description The Umeco LTM210 series of prepreg systems are based upon proprietary low temperature cure epoxy based formulations which may be postcured to produce high temperature end use 210 C (410 F) composite tools. The series incorporates many improvements to the original innovative LTM10 series. The LTM210 series comprises a second generation of tooling prepregs tailored to cover a wide range of composite tooling requirements and has the following general features:- Features Prepreg options giving 1-10 days autoclaveable outlife. Low initial cure temperatures down to 35 C (95 F) minimum. Prepreg has excellent tack and drape at shop temperatures between 15 and 35 C (59 and 95 F). Good handleability even at high ambient temperatures. Good retention of mechanical properties up to 210 C (410 F) when fully postcured. Tooling solution optimised for moulding 180 C (356 C) cured epoxy components. Very low prepreg volatile content made by a solvent free process. Routine processing by autoclave cure with excellent quality surface finish achievable. Mould tools can be manufactured directly from low temperature epoxy and other suitable masters. Improved tool accuracy with low residual stress. Unsupported (free-standing) postcure. Low tool CTE, matched with Umeco-supplied backing structures. Low tool shrinkage, matched to Umeco s tooling block expansion during cure. Prepregs available from stock with standard carbon or glass reinforcement. Prepreg storage life up to 1 year at -18 C (0 F). Page 1 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

2 Instructions for Use The LTM210 series tooling prepregs have been especially formulated to exhibit excellent handleability over a range of ambient conditions, to remain easily usable even in high ambient temperature conditions, to give excellent surface finish, to have versatile processing characteristics and to give long life mould tools at use temperatures of 180 C to 190 C. Prepreg should be removed from the freezer and allowed to reach room temperature prior to opening the sealed bag. The presence of moisture within a curing laminate may degrade the quality and aesthetic appearance of the structure produced. Consequently it is prudent to ensure that prepreg of all types is thawed to the core of the roll before opening the sealed bag to avoid potential moisture contamination as a result of condensation. For a 25m (82ft) roll of prepreg, a typical thaw time is of the order of 6 hours, therefore it may be advantageous to order roll lengths or pre-cut pieces to suit each particular application. Alternatively a new full roll can be thawed, cut as required, and then repacked in smaller quantities for return to freezer storage and use as required. Prepreg should be cut prior to removal of the release films. The lay-up procedure for tools manufactured with LTM210 series prepreg is basically similar to that found in Umeco's general tool manufacture document TDS1001. For cure and postcure details, adopt the figures used in this datasheet specific to a particular LTM210 series system being used. LTM210 series prepregs are ideal for the manufacture of tooling via autoclave processing. General instructions for manufacture of tooling using this process are found below. Autoclave Processing: The release paper should be removed from the first ply, which should then be positioned into the carefully released mould. The more tacky side of the surface ply must be applied to the released master surface in order to ensure sufficient adhesion during lay-up. Great care should be taken to ensure that the prepreg conforms exactly to the tool shape, especially around female corners to ensure consolidation without bridging. It is essential that all the recommended cutting and lay-up details are followed for every ply in the lay-up. Bridging and leakage will occur if these procedures are not followed. Rollers and shaped PTFE spatulas may be used to assist this operation. The top release film should be removed once the prepreg has been positioned. Subsequent layers may then be applied in the same manner until the desired thickness is achieved. The lay-up should be vacuum debulked at regular intervals (frequency depends on a number of variables, see Umeco s document TDS1001 for more advice) with 26-28in Hg ( mbar) of vacuum for 2-3 minutes, covering the laid-up material with perforated release film (P3) plus a suitable breather. A low cost membrane may then be sealed into position to complete the vacuum bag for debulking. Page 2 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

3 Once the layup is completed, the final consumables pack can be fitted as follows:- Apply tows of glass fibre every 0.5 metre (19.5in) of laminate edge to reach beyond the release film and meet the breather cloth. Apply a single ply of unimpregnated 80 gsm polyester peel ply, cut to the size of the lay-up. This is optional, but is recommended if a backing structure is to be bonded to the tool. Apply a layer of unperforated release film. This should overlap the edge of the lay-up by at least 25mm (1 in). Cut and tailor as necessary to completely avoid bridging. Note: This is a critical part of the whole procedure, as bridged vacuum bags and consumables are a common cause of poorly consolidated female corners on moulds, leading to potentially serious and unrepairable leakage problems. Apply a non-woven breather of suitable conformity. Use a single layer of 340gsm (10ozs per sq.yd), over the majority of the layup and two layers locally around vacuum ports or complex features. Cut and splice as necessary to avoid bridging. Apply the vacuum bag to the lay-up ensuring plenty of slack is provided in al bagging materials to avoid bridging. Page 3 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

4 Figure 1 Basic Bagging Arrangement Bag Unperforated Release Film [Halar or FEP to extend 25mm(1in) (minimum) beyond the laminate edge] Flash Tape to seal edge of release film to the tool surface as required Breather (see note above) Dry Glass Tows Sealant Tape Laminate Lay-up Released Pattern Surface Dry Peel ply Check all vac. lines, connections and one-way connectors for leaks. The complete system must be leak free prior to testing, and capable of achieving a minimum vacuum of 948mbar (28in Hg). To test this, firstly apply vacuum slowly until 948mbar (28in Hg) is achieved. Start test by disconnecting/closing off vacuum. Start the timer simultaneously and record the gauge reading at 0, 5 and 10 minutes. VACUUM LEAK RATE SHALL NOT EXCEED 67.7 mbar (2in Hg) after 10 minutes and should preferably be zero. If tool laminate is to be autoclave cured repeat vacuum test under autoclave pressure. Note: It is vital that the leak rate is within specification limits, and that there are no leaks within the mould laminate area. A leak of any size whatsoever in the vacuum bag or master model will form an escape route for the pressurised air during an autoclave cure cycle. If a leak occurs anywhere on the mould laminate area, an escape path will form through the prepreg layup during the cure cycle, and will remain in the cured tool skin laminate as a permanent leak path. It is advisable to finally check the vacuum leak test by repeating it once the tool has been loaded into the autoclave. In this way, it can be confirmed that the consumables have not been disturbed. Page 4 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

5 Autoclave Cure: Note: Thermocouples should be taped to the external surface of the bagging at the thickest section of the master. These are the areas which will take the longest time to reach the cure temperature. The duration of the autoclave cure cycle will be determined from the time these parts reach the specified cure temperature. With full vacuum applied to the bag, start raising the temperature towards the required initial cure temperature set point. Start the pressurisation cycle as soon as the stated minimum cure temperature (as indicated by the leading thermocouple, NOT the lagging thermocouple) for the resin system you are using is reached, provided that the time from the start of the heating cycle is not less than 30 minutes, and not greater than 1 hour. Note: Different equipment, tooling heat capacity, and ramp rates may mean that the stated minimum cure temperature for the resin has not been reached within the time limits. In this case the time limits apply. Additionally, for rapid heat-up rates to low initial cure temperatures where the cure set point is reached before 30 minutes have elapsed, the pressure should only be applied at a minimum of 30 minutes into the heat-up cycle. Retaining vacuum throughout the process, raise the autoclave pressure to 0.62MPa (90psi/6.2bar) and the temperature to the selected initial cure temperature. Note: Care should be taken not to exceed the heat up rate of 3 C (5.4 F) per minute during pressurisation, as the internal temperature may rise substantially when the pressure is raised. Allow the temperature to rise to the desired level and dwell for at least the minimum length of time specified, as detailed in the processing window tables following. A guide to relevant cure cycles is provided in Tables 1 and 2. Page 5 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

6 Note: Exotherm Avoidance You are advised to read this section before proceeding with lay-up and initial cure. LTM prepregs contain highly reactive resins that can undergo severe exothermic heat build up during the initial curing process if incorrect curing procedures are followed. Great care must be taken to ensure that safe heating rates, dwell temperatures and layup/bagging procedures are adhered to, especially when moulding tooling laminates that are typically 6-7mm ( in) thickness. This applies to the standard Umeco tooling lay-up (one surface ply + eight bulk plies + one surface ply). Table 1 indicates the maximum initial cure temperature that can be used for carbon or glass tooling laminates. The risk of exotherm increases with lay up thickness and increasing cure temperature. It is strongly recommended that trials representative of all the relevant circumstances are carried out by the user, to allow a safe cure cycle to be specified. It is also important to recognise that the model or tool material and its thermal mass, combined with the insulating effect of breather / bagging materials can affect the risk of exotherm in particular cases. If in doubt, please contact Umeco s technical support staff for advice on modified cure cycles for thick laminates (greater than 6-7mm). If the recommended curing procedures are followed, some exothermic heating may occur giving a temperature rise within the laminate of C (18 27 F) above the autoclave ambient. Page 6 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

7 Table 1 - Guideline Prepreg Properties and Minimum Cure Conditions This table provides the prepreg outlife characteristics and minimum recommended cure temperatures for the four resin systems in the LTM210 series. A maximum initial cure temperature is indicates to avoid exotherm with standard 6 to 7mm thick tooling laminates. Table 2 provides the recommended cure schedules for the four systems as applied to standard tooling laminates Resin System LTM211 LTM212 LTM213 LTM217 Maximum Drape Life (days) at normal ambient temperature Autoclavable Worklife (days) at normal ambient temperature Minimum Initial Cure Temperature C ( F) 35 (95) 35 (95) 45 (113) 55 (131) Maximum Initial Cure Temperature C ( F) (to avoid exotherm risk for tooling laminate) 60 (140) 60 (140) 65 (149) 80 (176) Shelf life at -18 C (0 F) 1 year 1 year 1 year 1 year Maximum Glass Transition Temperature ost cure C( F) F (Tg) from full postcure C ( F) 210 (410) 210 (410) 210 (410) 210 (410) Notes: 1. Maximum heating rate of 3 C (5.5 F) per minute for cure cycle. 2. In all cases temperatures refer to tool surface or component being cured, rather than autoclave air temperature. 3 The maximum drape life is the feature limiting the laminating outlife of the LTM210 series prepregs. Since fresh prepreg should be used for each day s lay-up, this does not give a practical problem. Once prepreg is laid-up, the autoclavable worklife applies. 4 LTM212 is now recommended over LTM211, but LTM211 is still available to existing customers. Page 7 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

8 Table 2 Minimum and Optimum Cure Times for LTM210 Series Resins This table provides recommended cure times and approximate gel times at the respective cure temperatures for standard tooling laminate: LTM211 Cure 35 C 40 C 45 C 50 C 55 C 60 C 65 C 70 C Temperature Approximate Gel Minimum Cure Risk of Exotherm Optimium Cure Cure Temperature Approximate Gel Minimum Cure Optimium Cure Cure Temperature Approximate Gel Minimum Cure Optimium Cure Cure Temperature Approximate Gel Minimum Cure Optimium Cure LTM C 40 C 45 C 50 C 55 C 60 C 65 C 70 C Risk of Exotherm LTM C 50 C 55 C 60 C 65 C 70 C 80 C 85 C Risk of Exotherm LTM C 60 C 65 C 70 C 75 C 80 C 85 C 90 C Risk of Exotherm Note: For laminates greater than 6 to 7mm thickness, e.g , please contact Umeco Technical Support for advice on appropriate cure schedules. Page 8 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

9 Postcure Options: A postcure should be applied to achieve optimum properties and high temperature service. Option One (Recommended) Single ramp postcure - Figure 2 Option Two (Alternative) Stepped ramp postcure Figure 3 These examples are for tools requiring the laminate with the highest attainable Tg. For lower operating temperatures alternative cycles may be applied. Please consult Umeco for advice. Figure 2 LTM210 series Postcure Cycle Option 1 (Recommended): Single Ramp Postcure (SRPC) minutes Notes: 1. Maximum Ramp Rate 20 C (36 F) per hour. Temperature ( C) Dwell 15 minutes at 200 C (392 F). 3. Maximum Rate of Cool Down Step from 200 to 190 C (392 to 374 F) is 3 C (5.5 F) per minute. 4. Dwell at 190 C (374 F) for 8 hours Maximum Rate of Cool Down From 190 to 60 C (374 to 140 F) is 3 C (5.5 F) per minute. 6. Part may be removed <60 C (<140 F) Page 9 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

10 Figure 3 LTM210 series Postcure Cycle Option 2 (Alternative): Stepped Ramp for Manual Control with set temperatures. Temperature ( C) Notes: 1. Maximum Ramp Rate 1 C (1.8 F) per minute to 200 C (392 F), with 2 hour dwells every 40 C. 2. Dwell at 200 C (392 F) for 8 hours. 3. Maximum Rate of Cool Down step from 200 to 60 C (392 to 140 F) is 3 C(5.5 F) per minute. 4. Part may be removed at <60 C (140 F) All LTM210 series laminates may be postcured unsupported (free-standing) unless the size, shape and laminate thickness would allow excessive distortion under self-weight, in which case some minimal support is desirable. The most critical part of a postcure cycle is ramping away from the immediate cure temperature. For laminates in a low state of cure, e.g. LTM211 and LTM212 cured at 35 C, the resin cross-linking chemistry is at its least responsive. To ensure the generation of Tg ahead of postcure temperature it is advisable to reduce the ramp-rate to 10 C/Hour for the first period of the postcure. Likewise, the ramp-rate can be speeded up once the temperature has risen. Table 3 gives guidance on how the postcure cycle can be optimised if process controls permit. Initial Cure Temperature ( C) Postcure Cycle Up to 50 C Postcure Cycle 50 C to 100 C Postcure Cycle 100 C to 200 C 35 to C / Hour 20 C/Hour 40 C/Hour 40 to C / Hour 20 C/Hour 40 C/Hour LTM211 LTM212 LTM to C / Hour 20 C/Hour 40 C/Hour 50 to 65 Not Applicable 20 C/Hour 40 C/Hour LTM to 80 Not Applicable 20 C/Hour 40 C/Hour Table 3 : Options for Optimising Postcure Cycle by varying postcure ramp-rates. Page 10 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

11 sd03sd03 asd03 Typical Mechanical Properties - Tooling Laminates Laminates prepared from 280gsm, 4x4 Twill (3K H.S. Carbon Fibre). utocl Autoclave cured, postcured to 200 C ( 392 F). Flexural Strength (MPa) Flexural Strength Test Temperature ( C) ILSS (MPa) Interlaminar Shear Strength Test Temperature ( C) Flexural Modulus (MPa) Flexural Modulus Test Temperature ( C) Fibres 0/90 (Warp 0 ) Data normalised to 55% Vf Laminate Void Content < 1%v/v CRAG Test Methods applied Page 11 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

12 C Technical Data Typical Physical Properties Tooling Laminates (LTM210 Series) LTM210 series - Cured Laminate Physical Property UNITS VALUES Laminate Void Content Autoclave Cure %v/v <1 Shrinkage During Manufacture (Full SRPC) C.T.E. (Autoclave laminates) RT 180 C(356 F) Glass Transition Temps. Tg (General) Carbon Tool % 0.06* Glass Tool % 0.17* Carbon Tool Glass Tool Fully Postcured at 200 C (392 F) Initial Cure 40 C (104 F) Initial ial Cure 50 C 60 C (122 F) (140 F) Initial Cure 60 C ( 140 F) E x10-6 / C E x 10-6 / F E x10-6 / C E x 10-6 / F C ( F) C ( F) C ( F) C ( F) * * ( ) 55 (131) ** 65 (149) ** 75 (167) ** ) F)F) * Shrinkage and CTE is dependent on construction and processing. Figures quoted are based on Umeco's standard quasi-isotropic tooling laminates using fabric styles CF0100 T or CF0300T and CF0700T for the carbon and GF0100T and GF0700T for the glass tool laminate. ** Dependent on particular resin system. Page 12 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

13 Availability Standard fabric reinforcements available with LTM210 series resin systems. (Other fabrics are available on request). Summary of Standard Prepreg Products: Designation Description Dry Cloth Weight g/m² (lb/ft²) Nominal Moulded Thickness mm (ins) Fibre Type CF0100T 4/4 Twilll Carbon Fabric 283 (0.058) 0.30 (0.0119) 3K High Strength Carbon Fibre CF0300T 2/2 Twilll Carbon Fabric 200 (0.041) 0.21 (0.0083) 3K High Strength Carbon Fibre CF0700T 2/2 Twill Carbon Fabric 660 (0.14) 0.67 (0.026) 12K High Strength Carbon Fibre GF0100T 8 End Satin Glass Fabric 300 (0.061) 0.22 (0.088) E Glass Continuous Filament GF0700T 2/2 Twill Glass Fabric 850 (0.17) 0.60 (0.023) E Glass Continuous Filament Standard Roll Sizes: CF0100T - Surface Ply 33m (108ft) x 1.00m (39.3in) CF0300T - Surface Ply 33m (108ft) x 1.00m (39.3in) CF0700T - Bulk Ply 27m (88.5ft) x 1.25m (49.2in) GF0100T - Surface Ply 33m (108ft) x 1.00m (39.3in) GF0700T - Bulk Ply 25m (82ft) x 1.25m (49.2in) Tooling prepregs may also be supplied as cut pieces. Storage and Outlife Moisture in prepreg can have a critical effect on the void content of a laminate. It is very important to fully defrost the material prior to use. LTM210 series prepreg should be stored at -18 C (0 F) in sealed polythene bags. On removal from cold storage always allow the material to reach room temperature before breaking the seal on the bags. This will take at least at 6 least hours 1 for year. a full roll. Storage life at -18 C ( 0 F) is at least 1 year. Page 13 of 14 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: Registered Office Registered No England

14 Health and Safety LTM210 series prepregs contain epoxy resins which can cause allergic reaction on prolonged or repeated skin contact. Gloves and protective clothing must be worn. Wash skin thoroughly with soap and water or resin removing cream after handling. Do not use solvents for cleaning the skin. Use mechanical exhaust ventilation when heat curing the resin system. For further information, consult Umeco Material Safety Sheets MSDS Nos as allocated and listed below: LTM211 MSDS No 160 LTM212 MSDS No 243 LTM213 MSDS No 244 LTM217 MSDS No 246 Page 14 of 14 All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.

15 ADDENDUM FOR USE WITH: PDS1005 LTM 10 Series PDS1081 LTM 210 Series TDS Manufacture of LTM Mould Tools ALTERNATIVE REINFORCEMENTS FOR LTM10, LTM12 AND LTM16 TOOLING PREPREGS As a result of the worldwide capacity shortage for production of high strength 3k carbon fibres, Umeco has evaluated and approved the following alternatives to CF0300 (199gsm twill fabric) prepregs and CF0100 (283gsm twill fabric) for composite tool manufacture. These alternatives may be used only as balancing plies on the bag side of the lay-up they must not be used as surface plies against the master model. Prepreg Data For use with LTM10 Series: Fabric Designation Fabric Description PW Carbon Fabric 2/2 Twill Carbon Fabric Dry Fabric Weight (gm/m²) Fibre Type T700S(12K) Spread yarn T700S(12K) Spread yarn Yarns per cm warp/weft Nominal Moulded Thickness (mm) Nominal Fibre Content % Volume Mean Resin Content % Weight 1.2 / / For use with LTM210 Series: Fabric Designation CF2900 Fabric Description 2/2 Twill Carbon Fabric Dry Fabric Weight (gm/m²) 283 Fibre Type Standard (12K) high strength carbon Yarns per cm warp/weft Nominal Moulded Thickness (mm) Nominal Fibre Content % Volume Mean Resin Content % Weight 1.8 / Page 1 of 2 Umeco Structural Materials (Derby) Ltd. Composites House, Sinclair Close, Heanor Gate Industrial Estate, Heanor, Derbyshire, DE75 7SP, UK Telephone: +44 (0) Facsimile: +44 (0) Internet: PDS1005/03.12/ADD-ISSUE 4a Registered Office Registered No England

16 Lay-up Sequence Operation Ply No Orientation Material / Operation 1 Master model dried 2 Master model vacuum integrity check 3 Release agent applied and baked 4 0 CF0300T/LTM10 Series or CF0100T/LTM210 Series 5 Vacuum debulk at RT, minimum 25in Hg - 15mins 6 0 CF0700T / LTM 10 and 210 series CF0700T / LTM 10 and 210 series 8-45 CF0700T / LTM 10 and 210 series 9 90 CF0700T / LTM 10 and 210 series 10 Vacuum debulk at RT, minimum 25in Hg - 15mins CF0700T / LTM 10 and 210 series CF0700T / LTM 10 and 210 series CF0700T / LTM 10 and 210 series 14 0 CF0700T / LTM 10 and 210 series 15 0 CF0300 or or / LTM 10 Series or CF2900 / LTM 210 Series 16 Final bag and debulk at RT, minimum 25in Hg 15mins 17 Vacuum leak check 18 Cure 90 psi/6 Bar in autoclave or Cure under minimum 28in Hg vacuum 19 Postcure 20 Attach backing structure as per instructions 21 Release Prime Signed Check Page 2 of 2 PDS1005/03.12/ADD-ISSUE 4a All statements, technical information and recommendations contained in this data sheet are given in good faith and are based on tests believed to be reliable, but their accuracy and completeness are not guaranteed. They do not constitute an offer to any person and shall not be deemed to form the basis of any subsequent contract, nor to constitute any warranty or representation as to quality, merchantability or fitness for purpose. All products are sold subject to the seller s Standard Terms and conditions of Sale. Accordingly, the user shall determine the suitability of the products for their intended use prior to purchase and shall assume all risk and liability in connection therewith. It is the responsibility of those wishing to sell items made from or embodying the products to inform the user of the properties of the products and the purposes for which they may be suitable, together with all precautionary measures required in handling those products. The information contained herein is under constant review and liable to be modified from time to time. Copyright Umeco. All rights reserved worldwide. All trademarks or registered trademarks are the property of their respective owners.