EPIKOTE Resin MGS RIMR 145

Transcription

1 Product Bulletin Wind Energy High-performing low viscosity system that enables direct infusion of thick carbon fiber components EPIKOTE Resin MGS RIMR 145 EPIKURE Curing Agent MGS RIMH 145 EPIKURE Catalyst MGS RIMC 145 EPIKOTE Resin MGS RIMR 145 is a low viscosity resin infusion system which, when cured, gives rise to a very low exotherm, enabling the manufacture of thick carbon reinforced structures such as spar caps by VARTM. The elimination of prepreg allows for the production of stronger, lighter rotor blades at significantly lower material and process costs. EPIKOTE Resin MGS RIMR 145 s excellent mechanical properties also make this system ideal for producing components subject to high static and dynamic loads. GL (Germanischer Lloyd) approved, this system offers a service temperature range from C ( F) with an adjustable curing speed. It is also available as a pre-accelerated two-component system. Mix Ratio Property EPIKOTE Resin MGS RIMR 145 EPIKURE Curing Agent MGS RIMH 145 Parts by Weight Parts by Volume Application Areas/ Suggested Uses Infusion of thick laminate structures Especially suitable for infusing thick C-fiber UD pre-forms Also suitable for use with glass fiber Benefits Easy to handle Long pot-life Adjustable curing speed Excellent laminate properties such as transversal tensile and 0 compressive strength EPIKURE Catalyst MGS RIMC 145

2 EPIKOTE Resin MGS RIMR 145 Sales Specification Viscosity at 25 C mpa s DIN D = 10 s -1 Refractive Index DIN Epoxy equivalent g/equiv DIN Typical Properties Density at 20 C g/cm³ 1.16 DIN EN ISO EPIKURE Curing Agent MGS RIMH 145 Sales Specification Viscosity at 25 C mpa s DIN D = 10 s -1 Refractive Index DIN Typical Properties Color Gardner < 4 ISO 4630 Density at 20 C g/cm³ 1.20 DIN EN ISO EPIKURE Catalyst MGS RIMC 145 Sales Specification Refractive Index DIN Typical Properties Viscosity at 25 C mpa s 1.5 DIN D = 10 s -1 Color Gardner < 2 ISO 4630 Density at 20 C g/cm³ 0.91 DIN EN ISO

3 Processing Notes Crystallization is very unlikely, but might appear as cloudiness or solidification. Before processing, the crystallization must be reversed by heating the material to C ( F) while gently stirring. Recommended processing procedures vary depending upon the mold s temperature tolerances. Maximum mold temperature 90 C Instructions: 1. Pre-heat the resin (MGS RIMR 145) and curing agent (MGS RIMH 145) separately (maybe overnight) to 60 C. 2. Place the fibers in the mold and close the vacuum bag. 3. Heat the mold to 60 C and apply vacuum. 4. Mix at a ratio of 100 pbw [parts by weight] MGS RIMR 145, 82 pbw MGS RIMH 145, and 0.5 pbw MGS RIMC Add 0.5 phr [per hundred resin] MGS RIMC 145 to the required amount of curing agent (MGS RIMH 145) and mix intensively. 6. Degas both components the resin and the pre-accelerated curative (RIMH/ RIMC mixture) separately, preferably at 5 10 mbar. 7. Mix both components, the resin (MGS RIMR 145) and the pre-accelerated curative (RIMH/RIMC mixture), and degas the mixture for up to 15 minutes. 8. Infuse at 60 C (supervision of the temperature development in the resin reservoir is highly recommended). 9. Insulate the mold with glass or rock wool in order to avoid heat loss. 10. When the infusion is finished, heat the mold to 90 C over one hour and maintain that temperature for 14 hours. 11. Cool to below 50 C and demold. Maximum mold temperature 120 C Instructions: 1. Pre-heat the resin (MGS RIMR 145) and curing agent (MGS RIMH 145) separately (maybe overnight) to 70 C. 2. Place the fibers in the mold and close the vacuum bag. 3. Heat the mold to 70 C and apply vacuum. 4. Mix at a ratio of 100 pbw [parts by weight] MGS RIMR 145, 82 pbw MGS RIMH 145, and 0.3 pbw MGS RIMC Add 0.3 phr [per hundred resin] MGS RIMC 145 to the required amount of curing agent (MGS RIMH 145) and mix intensively. 6. Degas both components, the resin and the pre-accelerated curative (RIMH/RIMC mixture), separately, preferably at 5 10 mbar. 7. Mix both components, the resin (MGS RIMR 145) and the pre-accelerated curative (RIMH/RIMC-mixture), and degas the mixture for up to 15 minutes. 8. Infuse at 70 C (supervision of the temperature development in the resin reservoir is highly recommended). 9. Insulate the mold with glass or rock wool in order to avoid heat loss. 10. When the infusion is finished, heat the mold to 120 C over four hours and maintain that temperature for 4 more hours. 11. Cool to below 50 C and demold. Vacuum assisted resin infusion technology requires special attention to the vapor pressure of the components at infusion conditions. EPIKOTE Resin MGS RIM 145 allows infusion at temperatures of up to 80 C and a pressure level of less than 2 mbar. 3

4 Vapor Pressure vs. Temperature 10 Vapor Pressure [mbar] Temperature [ C] Resin Curative Pot life can be adjusted over a wide range by varying the proportion of accelerator added and the temperature applied. Isothermal Rise in Viscosity (0.35 phr RIMC145) Viscosity [mpa.s] Time [min] RIM 70 C RIM 60 C RIM 50 C

5 Curing Conditions At the end of its bench life, the compound first gels, then solidifies. Ultimately, this progressive curing reaction results in a dimensionally stable molding strong enough to be stripped from the mold. The curing process is only complete when no further improvement in properties such as mechanical strength or increase in the glass transition temperature can be achieved. Tg development is strongly dependent upon the amount of catalyst and the temperature profile during curing. A higher proportion of catalyst will generally result in faster Tg development. The graph (at right) gives a rough indication of possible cure cycles. Notably, resin system RIMR 145 gives many more possibilities for setting up and optimizing a process than conventional resin systems do. Because of the higher required curing temperature it is strongly recommended that components such as spar caps be allowed to cure completely before being incorporated into the final structure. Partially cured thick components are unlikely to reach complete cross linkage during shell or bonding paste curing. Tg Development vs. Time Tg [ C] phr RIMC 145 isothermal 90 C 0.3 phr RIMC 145 isothermal 120 C phr RIMC 145 recommended 90 C process 0.3 phr RIMC 145 recommended 120 C process Time [h] 5

6 Typical Properties of cured compound Curing conditions: 8 h at 120 C Mixture pbw EPIKOTE Resin MGS RIMR pbw EPIKURE Curing Agent MGS RIMH pbw EPIKURE Catalyst MGS RIMC 145 Property Unit Target Value Test Method/ Density at 20 C g/cm³ 1.2 Tensile strength MPa 80 ISO 527 Elongation at break % 5 ISO 527 E-Modulus MPa 3.5 x 10 3 ISO 178 Flexural Strength MPa 130 ISO 178 Glass transition temp. Tg C 90 IEC Water absorption at 23 C 7 days % 0.24 ISO/R 62 Laminate Properties Glass PPG2002 or OCV SE1500 Fiber volume fraction Unit Average value deviation Coefficient of variation [%] R (5%,95%,υ,n) Nominal 53% fiber volume content Tension test parallel to the fiber Tension test perpendicular to the fiber Compressive test parallel to the fiber Compressive test perpendicular to the fiber ISO ISO DIN EN ISO 14126:2000 DIN EN ISO 14126:2000 Tensile strength 53.6% MPa Failure strain 53.6% % E-modulus 53.6% MPa Poisson s ratio 53.6% TTS (transversal tensile strength) [first crack] 51.3% MPa Failure strain 51.3% % E-modulus 51.3% MPa Compressive strength 53.4% MPa Failure strain 53.4% % E-modulus 53.4% MPa Transversal compressive strength 54.1% MPa Failure strain 54.1% % E-modulus 54.1% MPa Laminate Properties C-fiber 800 g/m² Fiber volume fraction Unit Average value deviation Coefficient of variation [%] R (5%,95%,υ,n) Nominal 56% fiber volume content Tension test parallel to the fiber Tension test perpendicular to the fiber Compressive test parallel to the fiber Compressive test perpendicular to the fiber ISO ISO DIN EN ISO 14126:2000 DIN EN ISO 14126:2000 Tensile strength 52.1% MPa Failure strain 52.1% % E-modulus 52.1% GPa TTS ( transversal tensile strength) [first crack] 49.1% MPa Failure strain 49.1% % E-modulus 49.1% MPa Compressive strength 56.9% MPa Failure strain 56.9% % E-modulus 56.9% GPa Transversal compressive strength 56.9% MPa Failure strain 56.9% % E-modulus 56.9% MPa

7 Safety, Storage and Handling Please refer to the Material Safety Data Sheet (MSDS) for the most current Safety and Handling information. The components under discussion in this technical information data sheet should be stored at room temperature in a moisture-free environment, sealed in their original containers. Under these conditions they can be stored for a minimum of 12 months from the date of certification. Exposure to these materials should be minimized or avoided. Observe proper precautions, use appropriate engineering controls and proper personal protective clothing and equipment, and adhere to proper handling procedures. None of these materials should be used, stored, or transported until the handling precautions and recommendations as stated in the MSDS for these and all other products being used are understood by all persons who will work with them. Questions and requests for information on Momentive Specialty Chemicals Inc. ( Momentive ) products should be directed to your Momentive sales representative, or the nearest Momentive sales office. Information and MSDSs on non-momentive products should be obtained from the respective manufacturers. Packaging Available in bulk, totes and drum quantities. Contact Information For product prices, availability, or order placement, visit the Contact Us section of our website. For literature and technical assistance, visit our website at: Form Number EPIKOTE Resin MGS RIMR 145 7

8 Momentive: The Science Behind What Lies Ahead At Momentive, our global team is focused on delivering value by helping our customers make their products and processes better. We do this by bringing our deep technical expertise, market experience and technology portfolio to bear on their specific challenges. We are the science behind thousands of innovations that enhance both our customers business results and everyday life. Reach our Global Customer Service network at: U.S. and Canada Europe All Others Please refer to the literature code MSC-145 when contacting us. Momentive Specialty Chemicals Inc. World Headquarters 180 East Broad Street Columbus, OH Momentive Specialty Chemicals Inc. All rights reserved. and denote trademarks owned by or licensed to Momentive Specialty Chemicals Inc. MSC /12 Printed in Germany. The information provided herein was believed by Momentive Specialty Chemicals ( Momentive ) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Momentive are subject to Momentive s terms and conditions of sale. MOMENTIVE MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY MOMENTIVE, except that the product shall conform to Momentive s specifications. Nothing contained herein constitutes an offer for the sale of any product.