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PRIME 20LV - Epoxy Infusion System (v10)
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Catalog excerpts

PRIME 20LV - Epoxy Infusion System (v10) - 1

PRIME™ 20LV Epoxy Infusion System n Very low viscosity n Variable infusion times n Very low exotherm even in thick sections n Suitable for infusing very large structures n GL and Lloyds approved* Introduction PRIME™ 20LV is the next generation of PRIME™ 20 epoxy infusion system, which is specifically designed for use in a variety of resin infusion processes including RTM (resin transfer moulding), SCRIMP™ and RIFT (resin infusion under flexible tooling). PRIME™ 20LV has a much reduced viscosity resin and longer working time, which makes it ideal for infusing very large parts with complex reinforcements in one operation. It maintains the exceptionally low exotherm characteristic, which allows thick sections to be manufactured without risk of premature gelation due to the heat of exothermic reaction. This low exotherm will also help to extend the life of mould tools. PRIME™ 20LV has been used successfully for the single-operation moulding of components ranging from narrow carbon yacht masts, up to 80' yacht hulls and wind turbine blades. It achieves excellent mechanical and physical properties from a moderate (50°C) postcure, offering the finished laminate properties that lie between hand lamination and low-temperature cure prepreg processes. The PRIME™ 20LV system is available with four hardeners, offering a range of working times and cure speeds. This enables the geltime of the resin to be more closely matched to the required infusion time for any particular size of moulded part. The high Tg hardener is ideal for applications requiring 100°C plus thermal capability, whilst maintaining all the other properties of the system. Extensive tests at Gurit have shown that PRIME™ 20LV with Slow and Extra Slow Hardeners provide an excellent bond to certain types of vinylester resin. This permits production boat builders to use existing polyester gelcoat products with high performance epoxy infusion systems by using a vinylester tie-coat interface. This delivers significant benefits to the production boat builder, in terms of improved durability and performance of hulls/decks whilst retaining the high gloss and ease of gelcoat repair associated with polyester systems. For further advice and comprehensive processing notes please contact Marine Technical Support. *High Tg Hardener excluded PDS-PRIME20LV-10-0313 1

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PRIME 20LV - Epoxy Infusion System (v10) - 2

PRIME™ 20LV resin must be mixed with PRIME™ hardener in PRIME™ 20LV resin: PRIME™ hardener (Fast, Slow or Extra Slow! PRIME™ 20LV resin: PRIME™ HighTg Hardener The fast hardener is not usually used alone with the resin - although it can be used in this way, it is more often premixed with another PRIME™ hardener to achieve shorter gel times than would otherwise be obtained with the use of Slow or Extra Slow hardener alone. The premixed hardener combination (Fast + Slow, or Fast + Extra Slow) is still mixed with resin at 100 : 26 by weight. High Tg hardener should be used as a stand alone...

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PRIME 20LV - Epoxy Infusion System (v10) - 3

Table 2. Working Properties Fast Hardener 15°C Initial Mixed Viscosity (cP) 20°C Slow Hardener 25°C 30°C 15°C 20°C Extra Slow Hardener 25°C 30°C 15°C 20°C 25°C High Tg Hardener 30°C 20°C 25°C 30°C 397 265 181 535-568 318-338 219-232 127-134 564-598 308-328 214-228 172-182 662-702 347-369 220-234 155-165 Geltime – Tecam 150g in water (hr : min) 1:30 1:09 0:30 0:17 6:20 5:00 3:20 2:20 13:30 10:20 8:00 6:15 7:45 6:30 4:08 Pot life 500g in air (hr : min) 0:35 0:28 0:23 0:16 1:30 1:15 1:00 0:45 7:55 6:00 4:05 2:10 3:20 2:10 1:10 Latest flow under vacuum (theoretical, thin film, hr : min) 3:50...

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PRIME 20LV - Epoxy Infusion System (v10) - 4

Cured Properties Cured System Thermal Properties The thermal properties of PRIME™ 20LV system, as determined by Differential Scanning Calorimeter (Mettler Toledo DSC821 E), and Dynamic Mechanical Thermal Analysis (RheodyneThermal Analyser Mklll) are presented in Table 3 Cured System Mechanical Properties (Matrix The mechanical properties of the matrix system are Cured Laminate Properties The cured laminate properties are presented in Table 5. The laminate is constructed using RE301 8 harness satin weave

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PRIME 20LV - Epoxy Infusion System (v10) - 5

Glass Transition Temperature Tensile Properties of Castings 120 80 5.0 110 Tensile Strength (MPa) Temperature (¡C) 90 80 70 60 50 40 30 4.0 70 3.5 3.0 60 2.5 2.0 1.5 50 1.0 0.5 20 10 0 Tensile Modulus (GPa) 4.5 100 40 Fast Slow Extra Slow Tg1 (Cured 24hrs@21¡C + 16hrs@50¡C) High Tg Tg Ult (¡C) Health and Safety PRIME™ 20LV system PRIME™ 20LV resin and hardeners have been designed for use in entirely closed-mould processes. This includes the mixing phase, which should only be carried out by automated mixing machines. It is not suitable for open-mould processing and strict adherence to the...

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PRIME 20LV - Epoxy Infusion System (v10) - 6

Transport & Storage The system should be kept in securely closed containers during transport and storage. Storage should be in a dry place out of direct sunlight. The temperature should be between 18°C and 25°C. Containers should be firmly closed. The hardeners, in particular, will suffer serious degradation if left exposed to air. Shelf Life Adequate long-term storage conditions for both materials will result in a shelf life of one year for both the resin and hardeners. Notice All advice, instruction or recommendation is given in good faith but Gurit AG (the company) only warrants that...

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