Ancamine 2903/2904 curing agents

Transcription

1 Ancamine 2903/2904 curing agents Robust curing agents for composites November 2015

2 Topics covered Composites market Product overview Typical properties Performance data Summary Contact information 2

3 Headlines in the composites industry (from Composites World) Automotive composites: Thermosets for the fast zone - Epoxies continue to be developed for faster cure to meet automotive production rates Composites upgrade marine infrastructure - All-composite docks best concrete in cost and time and aim toward future fastener-less construction for greater savings and sustainability Aeroengine Composites, Part 2: CFRPs expand - Proven in fan blade/case applications, carbon fiber-reinforced polymers migrate to previously unanticipated destinations nearer the engine hot zone 247wallst.com Aviationed.net 3

4 Ancamine 2903 and 2904 Responding to market trends for: faster processing and improved productivity, MDA replacement technologies, and expanding the use of composites Ancamine 2903 and 2904 both provide: - Low loading level (sole curative) - Improved processing due to low viscosity vs standard cycloaliphatics - Low exotherm during cure Special benefits: Ancamine 2903 Ancamine High strength retention after 1000 hrs in hot water - Higher chemical resistance and Tg vs standard cyclos - Non-MDA aromatic character - Higher Tg than standard cyclos (>170C) - Low temperature cure (<125C) - Faster green strength development than standard cyclos - Stable to carbamation on storage 4

5 Properties comparison with standard cycloaliphatic products Cyclo-1 Cyclo-2 Ancamine 2903 Ancamine 2904 AHEW PHR (EEW 180) Viscosity (cps) at 25C Mix viscosity** (cps) at 40C Gel time** (min) 150g at 25C Tg* (C) (DSC Isothermal) Color (amine) Clear Clear Amber Clear Color (cure part) Clear Clear Light yellow Light yellow Fracure toughness (psiin^1/2) K1c * Cure at 80 C for 2 hrs C for 3 hrs ** With a standard LER of EEW = 180, stoichiometric ratio 4

6 Performance: Ancamine 2903 chemical resistance Cast panels EEW 180 cured at 60C for 1 hr + 150C for 2 hrs Immersion test at 40C 1 x 3 specimens (5) 120 days Ancamine 2903 shows excellent resistance to ketones, alcohols and some acids 6

7 % Retention Performance: Interlaminar shear strength 70 Interlaminar Shear Strength Retention Cyclo-1 Cyclo-2 Ancamine 2903 Ancamine 2904 Cast panels EEW 180 cured at 60C for 1 hr + 150C for 2 hrs Higher strength retention Indicator of good fiber matrix adhesion % ILSS retention after 500h % ILSS retention after 1000h 7

8 Performance: Ancamine 2904 thermal properties Curing Agent Cyclo Cyclo Ancamine Ancamine DSC (Isothermal) (C) Cast panels were made with Epon 826 (EEW 180) cured at 60C for 1 hr and 150C for 2 h Tg can be further increased to 180C when using Ancamine 2904 by blending a multifunctional resin with the LER 8

9 % Conversion of Cure Performance: Ancamine 2904 low temperature cure Ancamine 2904 showed the lowest residual heat after 2 hr at 125C Calculation suggests it can achieve almost full conversion at lower temperature Conversion of Cure (%) Cyclo-1 Cyclo-2 Ancamine 2903 Ancamine 2904 Typically, greater than 90% cure conversion is considered a full cure or that the material has achieved optimum properties 9

10 Performance: Ancamine 2904 mechanical properties Compressive, tensile and flexural strength tested Standard cyclos at 150C Ancamine 2904 at 125C Ancamine 2904 allowed the same or better properties at lower cure temperature Lower cure temperature means faster throughput AND lower cost 12

11 Summary The composites industry continues to be dynamic and in need of problem-solving products - Air Products continues to work on solutions for the composites industry and has a larger offering for this industry Ancamine High ILSS retention for moisture or water exposed applications - Non-MDA aromatic character - Good chemical resistance Ancamine High thermal properties - Low temperature property development - Low temperature cure (125C) for faster processing 11

12 Contact information For samples, please contact us at : - prodinfo@airproducts.com For technical support, please contact us at: - cheminfo@airproducts.com - US: International:

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