Data Sheet Epoxy Prepreg System FT C curing epoxy matrices

Transcription

1 D- Data Sheet Epoxy Prepreg System FT C curing epoxy matrices Description Product Description FT1021 is a modified epoxy matrix with a high viscosity and a typical curing at 125 C - 60 minutes, showing an excellent variation range of the curing conditions from 80 C to fast curing at 160 C. It allows the production of prepregs using all commercially available reinforcing woven, non-woven and unidirectional materials weighing up to 1000 g/m². The resin contents can be set between 30 and 50 per cent depending on the requirements on the component and the procedural conditions. FT 1021 Prepregs also have controlled flow properties long storage stability at room temperature (2 weeks) brittle temperature of 100 C C good tack stages and variation possibilities (Tack 0-2) excellent adhesive strength with metal excellent adhesive strength with NOMEX honeycomb compliance with FAR (A) and CAA8 1SS2 Application This resin-system can be used for all customary reinforce materials like fabrics, UD-fabrics with area weights up to 1000 g/m². The resin content is flexible from 30 to 50% as needed for the acquirement of the construction and the process. Storage FT1021 prepregs are dispatched under dry ice or by refrigerated transport. After the date of dispatch the prepregs can be stored at -18 C for a period of at least 6 months. Before fabrication the prepreg rolls, in their protective sheets, have to be conditioned to room temperature. In this context it is absolutely necessary to avoid the formation of condensation water directly on the prepregs. At room temperature (approximately 20 C) the prepregs remain processable for 14 days. If the fabrication time exceeds this period the fabrication properties should be checked by measuring the resin flux. SGL epo GmbH 1/

2 D- Fabrication Curing Curing can be completed at temperatures between 80 C and 160 C. Here a temperature rise of 1 C to 4 C/min should be observed. In case of multistage fabrication the ejection can take place after the first curing cycle, i.e. after a short curing time. The short curing time has to be matched with the complete curing in the second curing cycle. This procedure has to be investigated by carrying out internal tests. The applied curing pressure can vary between vacuum pressure (>0.7 bar) and a positive pressure of approx. 3-4 bar. This depends on the specific application and the reinforcing material Cure of FT1021 Cure Time / min Conversion 85% 90% 95% 98% 99% Cure Temperature / C Fig 1. Time/turnover plot of FT1021 SGL epo GmbH 2/

3 D- Viscosity / mpa*s Viscosity FT 1021 = f(t) 1 K/min 2 K/min 3 K/min 4 K/min Temperature / C Fig. 2. Viscosity/temperature plot of FT1021 Properties Prepreg Properties PR-UD RST 220/635 FT (Fibertype: R-Glas, 463-AA tex) Property Normative reference Unit Value - Fabric area weight DIN g/m² 220 Width DIN mm 635 Resin content DIN % 46 Volatiles DIN % < 1 Prepreg area weight DIN g/m² 410 PR-UD CST 270/635 FT (Fibertype: Carbonfiber Tenax STS40 F13 24K 1600 tex) Property Normative reference Unit Value - Fabric area weight DIN g/m² 270 Width DIN mm 635 Resin content DIN % 40 Volatiles DIN % < 1 Prepreg area weight DIN g/m² 450 SGL epo GmbH 3/

4 D- Laminate Properties Physical, mechanical data s Results are for a UD R-Glass laminate with 40 vol% resin content, Drum Peel with 46 vol% resin content. (Fibertype: R-Glas, 463-AA tex) Tensile strength DIN Mpa E-Modulus tensile DIN MPa Flexural strength DIN MPa Interlaminare shear strength DIN Mpa Drum Peel ASTM D1781 N/76mm 23 > 190 Datas of UD-Carbonlaminate with 40 vol% resin content (PR-UD CST 270/635 FT102 40, Fibertype: Carbonfiber Tenax STS40 F13 24K 1600 tex) Tensile strength 0 DIN EN 2561B MPa E-Modulus 0 DIN EN 2561B GPa Flexural strength 0 DIN EN ISO MPa Flexural modulus DIN EN ISO GPa Interlaminare shear strength DIN EN 2563 MPa Sandwich Properties Properties on Nomex Honeycomb 2 Layers PR-UD CST 270/635 FT /0 / Honeycomb LN29967 A ,0mm /0 /90 - PR- UD CST 270/635 FT Layers Climbing Drum Peel DIN EN N/75 mm Point-Bending AITM N Safety guidelines When processing the above-mentioned products the guidelines issued by the chemical industry and the employers liability insurance in connection with the safety data sheets have to be complied with. General remarks These data and information are based on carefully conducted tests and experiments and shall inform the user. They should not be regarded as a guarantee for the suitability of certain applications. Users should at any rate ensure and confirm the suitability of these products for the intended purpose by carrying out their own tests and research. SGL epo GmbH 4/

5 D- SGL epo GmbH 5/