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T-Prime 160

T-Prime 160
8Pages

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T-Prime 160 Epoxy Tooling Infusion System n Thermally stable up to 160°C (320°F) when fully postcured n Resistant to thermal cycling damage n Viscosity suitable for infusion; 389 cP at 25°C (77°F) n Long pot-life and gel time; capable of infusing large or complex moulds n Ambient curing and low shrinkage for accurate mould manufacture Introduction T-Prime 160 is an epoxy tooling system for manufacturing glass or carbon moulds from liquid infusion processes. T-Prime 160 is compatible with Gurit’s range of 160°C gelcoat and repair systems. T-Prime 160 is an ambient curing system, providing a simple way to produce high accuracy moulds. Designed for infusion and cure at ambient temperatures, it should then be mid-cured at 40°C (104°F) for 4 hours to guarantee the strength needed for demoulding. It can then be postcured off the plug to give a material that is thermally stable to 160°C (320°F). Exceeding this temperature will cause a rapid loss in stiffness and a safety margin is required for the maximum tool operating temperature to prevent distortion or tool damage.

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T-Prime 160 Resin T-Prime 160 Hardener 100 : 35 (by weight) 100 : 42 (by volume) * Pot life in larger volumes can be reduced. Pot life depends mainly on the depth of resin and can be extended for shallower filled containers. Material approaching its pot life is typically 40-50°C (104 - 122°F) in the centre of the pot and it will then thicken as it cools in the laminate and feed pipes. This material will have already seen higher temperature will reach a higher viscosity more quickly than the thin film data at a given workshop temperature.

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70 T-Prime 160 - 20°C Air 20°C Test Pot Life 20°C T-Prime 160 - 25°C Test Air (Actual 25-27°C) Pot-Life 25°C Time / Minutes Large volumes of T-Prime 160 left in a pot can exotherm strongly and remaining mixed resin will need to be dispensed into a shallower vessel towards the end of the pot-life. Ideally the remaining resin should be less than 30mm deep or the pot placed into water to cool. Both the 20°C and the 25°C sample in this test (57mm deep) produced smoke at the end of the pot-life from the large exotherm temperature. Time (minutes)

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Application Notes ■ A good level of understanding of the infusion process is required to achieve a high quality mould. Contact Gurit for further advice or refer to Gurit process notes for further information. ■ Any deviation from the prescribed mix ratio may degrade the thermal capability and physical properties of the material. ■ Recommended workshop temperature is between 18°C and 25°C (64°F and 77°F) ■ If "drill" style mixing is used, this must be on the lowest setting to reduce the air introduced. Particular attention is needed to mix the sides and bottom of the container ■ Allowing the...

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Post Cure To achieve full postcure ramp at 0.2°C /min to 150°C (10 hours, 50 min) and dwell for 2 hours (0.36°F /min to 302°F). Faster postcure risks thermal softening of the tool and will increase the risk of distortion and shape change. The postcure can be stopped and re-started to look for and repair surface if required. Contact Gurit for advice when in doubt. Net Resin Figures - No waste allowance

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Net Resin Figures - No waste allowance A general 10 to 15% waste value is then recommended for purchase estimation. Additional resin is also required for infusion consumables. Resin waste in feed meshes and pipework depends on the component geometry and infusion design. As approx guide resin allow; ■ Small Infusion (Up to 2m2) Approx 2 Kg/m2 (Generally have a higher % waste) ■ Large Infusion (20m2 and above) Approx 1 Kg/m2 For the first components, and when new to infusion, allow extra resin for feed pots.

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Health and Safety The T-Prime 160 system has been designed for use in closed mould processes. Users should ensure that some elevated temperature cure is applied to the component before trying to machine it. In a component made from T-Prime 160, which has seen no heat, there will only be a partial cure. Therefore the sanding dust will be more irritating than dust from a laminate cured at elevated temperature, in which there will be more thorough cross linking. Particular care should also be taken when removing peel plies from part cured material as this can also product a dust like particle,...

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Transport & Storage The resin and hardener should be kept in securely closed containers during transport and storage. Any accidental spillage should be soaked up with sand, sawdust, cotton waste or any other absorbent material. The area should then be washed clean (see appropriate Safety Data Sheet). Adequate long term storage conditions will result in a shelf life of 12 months for both the resin and hardener. Storage should be in a warm dry place out of direct sunlight and protected from frost. The temperature should be between 10°C and 25°C. Containers should be firmly closed. Hardeners,...

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T-Prime 160 8Pages

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T-Prime 160
8Pages