Technical Information and Test Results for FenFormTM Silicone Sheet Composite Manufacturing

Contents FenFormTM Typical Physical Properties General Materials Properties Recommended Curing Conditions Packing Details Cured Material Specification Testing Method Physical Properties after Cycle Conditioning DOE Analysis: Tensile Strength DOE Analysis: Elongation at Break DOE Analysis: Modulus at 300% Cycles to Failure Summary of Results

Used in the manufacture of composite materials

FenFormTM Typical Physical Properties Standard thickness of 0.9mm to 3.5mm (0.35” to 1.38”). Standard widths of up to 1500mm (59.06”). Available both cured and uncured. Cured material has a fine fabric impression to aid removal. Standard colours of translucent and grey. Standard 50 durometer, additional hardness grades available on request. General Materials Properties (FenFormTM 50) Working Temperature Shelf Life (Uncured): R.T.I. 1500C 6 months from date of manufacture when stored at 240C wrapped as supplied Recommended Curing Conditions Press cure for 5 minutes at 1160C with 200psi (1.MPa)...

Cured Material Specification Property Test Method Typical Values FenFormTM 50 51 Tensile Strength Elongation at Break Tear Strength ASTM D412 DIE C ASTM D412 DIE C ASTM D624 DIE B ASTM D395 22h @ 1770C Compression Set Dielectric Strength Thermal Expansion Colours

FenFormTM silicone membranes are the flexible choice for your composites manufacture

Testing Method Fenner Precision owns a well-equipped on-site testing laboratory, which includes a Tensometer equipped with an environmental chamber. DOE (Design of Experiments) was carried out on FenFormTM and a competitor’s equivalent product. The factors investigated were: Temperature Extension Number of cycles

Physical Properties after Cycle Conditioning FenFormTM Temperature Cycles Tensile Elongation Modulus at Elongation (0C) Strength At Break % 100% 200% 300% 20 50 7.87 814 0.877 1.875 2.662 100 Competitor’s Material Temperature Cycles Tensile Elongation Modulus at Elongation (0C) Strength At Break % 100% 200% 300% 20 50 7.37 933 0.713 1.506 2.137 100

DOE Analysis: Tensile Strength

DOE Analysis: Elongation at Break

Cycles to Failure Material samples were cycled under controlled conditions until failure. Sample Average Number of Cycles to Break 104 When FenFormTM was cycled at extreme conditions (to give a manageable testing time), it lasted an average of 25% longer than the competitor’s product.

Summary of Results FenForm’sTM Tensile Strength is higher than the competition’s. The difference is maintained as the temperature and cycles are increased. The difference between the Elongation at Break of FenFormTM and the competitor’s material decreases at higher temperatures. The Modulus figure at a given elongation is higher for FenFormTM than the competitor’s material. The figure is more consistent as the temperature and cycles are increased. FenFormTM gives 25% more cycles than the competition when tested at the same temperature and with the same elongation conditions. FenFormTM is a stronger...

When quality is paramount, FenFormTM is the most reliable choice

Reusable FenFormTM silicone sheet outperforms the competition round after round FenFormTM: the Heavyweight Champion for Composites Manufacture

For more information, contact: Fenner Precision [email protected] Tel: +44 (0)1522 551010 Fax: +44 (0)1522 511252 www.fennerprecision.com