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1 A dvanced Materials A raldite LY / A radur System E POXY RESIN SYSTEM D ESCRIPTION : A raldite LY ( Resin) / A radur ( Hardener) is a two- component, low- viscosity epoxy system developed for use in the production of advanced composites using vacuum- assisted resin transfer molding (VARTM), resin transfer molding (RTM), Seemans Composite Resin Injection Molding Process SM (SCRIMP ), or other infusion processes. The low-mixed viscosity and wet- out potential of A raldite LY / A radur e nhance processability parameters. LY / h as intermediate to high t emperature performance. Composites produced with this product can a chieve a glass transition of 300 F ( 149 C) f ollowing a p ost cure. MIX R ATIO : B y wei ght: 100 to 35 to Hardener M ixing I nstructions : Meas ure each component accurately (± 5%) into clean containers. Thoroughly mix resin and hardener tog ether (minimum 2 minutes) scraping container sidewalls, bottom and mixing stick s everal times to a ssure a uniform mix. TYPICAL H ANDLING P ROPERTIES : T 77 F (25 C) unless otherwise noted. C riteria T est Value C olor M ixed T ransparent S pecific Gravity D V iscosity, cp Mi xed D , G el Time, minutes 100 gram mass D N OTE : Typical Properties These physical properties are reported as typical test values obtained by our t est laboratory. If assistance is needed establishing product specifications, please consult with our Quality C ontrol Department. 1/5

2 R ECOMMENDED CURE SCHE DULE : F (25 C) plus F (121 C) plus 3 hours at 350 F (177 C), unless noted o therwise. P lease note that other cure schedules may be used to obtain comparable physical properties. Please contact RenShape Solutions Technical Information Hotline (800) to discuss your application. T YPICAL CURED PROPERT IES : N EAT SYSTEM Cured F (25 C) p lus F (121 C) plus F (177 C). 77 F (25 C) unless otherwise noted. T est Values S pecific Gravity D C ubic Inch per Pound 2 H ardness (Shore D) D Ultimate Flexural S trength 12,200 Ultimate Flexu ral Modulu 380,000 U ltimate Tensile Strength, psi D- 38,921 T ensile Modulus, psi 3,555 % Elongation 2. 5 T g by DMA, E onset, dry, F ( C) 307 (153) T g by DMA, E onset, wet, F ( C) 270 (132) NOTE : All properties are of neat product form (non- c omposite) L AMINATE S YSTEM T YPICAL CURED PROPERT IES : T 77 F (25 C) unless otherwise noted. (1) Test Values Test Values H ardness (Shore D) D U ltimate Flexural Strength, psi 34,520 59,425 F lexural Modulus, psi U ltimate Tensile Strength, psi D ,133 T ensile Modulus, psi T g by DMA, E onset, d ry, F ( C) 301 (150) 317 (159) U ltimate Compressive Strength, psi D- 95 3,575 C ompressive Modulus, psi 2.87 C oefficient of Thermal Expansion D-3 38 In/in/ F - 22 to 8 F (- 30 to 30 C) I n/in/ F 77 to 212 F (25 to 100 C) (2) 2/5

3 LAY- U P PROCESS : (1) P anel Type : Approximately. 3 ft. x 2 ft. flat panel C loth Type : 8 layers, 1581 glass cloth C loth Rotation : 0,90 degree P rocedure : V acuum bagged, flat panel Laminate Resin C ontact : 32.3 % C ured 24 hours at 77 F (25 C) plus 1 hour at 17 F (80 C) plus 8 hours at 284 F (140 C). (2) Cured 24 hours at 77 F (25 C) plus 1 hour at 17 F (80 C) plus 2 hours at 250 F (121 C) plus 2 h ours at 300 F (149 C) plus 2 hours at 351 F (177 C). P ACKAGING : U nit W eight 5 gallon 40 l b. 5 g allon lb. 2 x ga llon package 14 lb. D rum 450 lb. D rum 315 lb. C ONDITIONING : S tir well before use. This material will separate. H ANDLING : W ork in a well ventilated area and use clean, dry tools for mixing and applying For two component system, combine the resin and hardener according to mix ration. Mix together thoroughly and use immediately a fter mixing. Material temperature should not be below 18 C ( 5 F) w hen mixing. 3/5

4 S T ORAGE : A raldite LY (Resin) / (Hard ener) should be stored in a dry place, in the sealed o riginal container, at temperatures between + 2 C and +40 C (+35. F and +104 F). Under these storage conditions, the shelf life is 2 y ears. The product should not be exposed to direct sunlight. PREC AUTIONARY STATEMENT : H untsman Advanced Materials Americas LLC maintains up to- date Material Safety Data Sheets (MSDS) on all of its products. These sheets contain pertinent information that you may need to protect your e mployees and customers against any known health or safety hazards associated with our products. Users should review the latest MSDS to determine possible health hazards and appropriate precautions to implement p rior t o u sing this material. F irst Aid! R efer to MSDS as mentioned above. K EEP OUT OF REACH OF CHILDREN F OR PROFESSIONAL AND INDUSTRIAL USE ONLY 4/5

5 I MPORTANT LEGAL NOTICE Huntsman Advanced Materials warrants only that its products meet the specifications agreed with the user. Typical properties, w here stated, are to be consi d ered as representative of current production and should not be treated as specifications. The manufacture of materials is the subject of granted patents and patent applications; freedom to operate patented processes is n ot implied by this publication. WHILE ALL THE INFORMATION AND RECOMMENDATIONS IN THIS PUBLICA TION ARE, TO THE BEST OF H UNTSMAN ADVANCED MATERIAL S KNOWLEDGE, I NFORMATION AND BELIE F, ACCURATE AT THE DATE O F PUBLICATION, n othing herein is to be construed as a warranty, whether express or implied, including but without limitation, as to merchantability or fitness for a particular purpose. In all cases, it is the responsibility of the user to d etermine the applicability of such information and recommendations and the suitability of any product for its own p articular purpose. The b ehavior of the products referred to in this publication in manufacturing processes and their suitability in any given end-u se environment are dependent upon various conditions such as chemical compatibility, temperature, and other variables, which are not known to Huntsman Advanced Materials. It is the responsibility of the user to evaluate the manufacturing circumstances and the final product under actual end- use requirements and to adequately advise a nd warn purch asers and users thereof. Products may be toxic and require special precautions in handling. The user should obtain Safety Data Sheets from Huntsman Advanced Materials containing detailed information on toxicity, together with proper shipping, handling a nd storage procedures, and should comply with all applicable safety and environmental standards. Hazards, toxicity and b ehavior of the products may differ when used with other materials and are dependent on m anufacturing circumstances or other processes. Such hazards, toxicity and b ehavior should be determined by the u ser and made known to handlers, processors and end users. Except where explicitly agreed otherwise, the sale of products referred to in this publication is subject to the general t erms and conditions of sale of Huntsman Advanced Materials LLC or of its affiliated companies including without limitation, Huntsman Advanced Materials (Europe) BVBA, Huntsman Advanced Materials Americas Inc., and H untsman Advanced Materials (Hong Kong) Ltd. H untsman Advanced Materials is an international business unit of Huntsman Corporation. Huntsman Advanced Materials trades through Huntsman affiliated companies in different countries including but not limited to Huntsman A dvanced Materials LLC in the USA and Huntsman Advanced Materials (Europe) BVBA in Europe. Ren, RenShape and RenInfusion are m ore, but not all, countries. registered trademarks of Huntsman Corporation or an affiliate thereof in one or C opyright 2007 Huntsman Corporation or an affiliate t hereof. All rights reserved. M ain Offices : H untsman Corporation Woodloch Forest Dr. T he Woodlands T exas ( 281) H untsman Advanced Technology C enter 800 Gosling Rd. T he Woodlands T exas ( 281) W ebsite : m/advanced_materials 5/5