Які асноўны спосаб фармавання эпаксідная шкловалакно

1. Ручная кладка-мокрая раскладка

Apply a release agent and a layer of medium-active liquid thermosetting resin with a viscosity of 0.3-0.4PaS to the surface of the mold in turn (after the gel coat is coagulated) and a layer of fiber reinforced materials. The fiber reinforced materials have surface felt and non-twisted coarse There are several kinds of gauze (checkered cloth). Use a hand-held roller or brush to impregnate the fiber reinforced material with resin, drive out air bubbles, and compact the base layer. The layup operation is repeated many times until the design thickness of the product is reached. The resin is cured at room temperature due to polymerization reaction. Can be heated to accelerate curing. At present, hand lay-up is the main form in my country, which accounts for about 80% of resin-based composite materials.

2. Ліццё смалы і перанос смалы RTM ліццё

RTM-гэта метад ліцця пад нізкім ціскам з закрытай формай. Змесціце арміраваны валакном матэрыял паміж верхняй і ніжняй формай; зачыніць форму і заціснуць форму; ўводзіць смалу пад ціскам; адкрыйце форму пасля зацвярдзення смалы і зніміце прадукт. Перад пачаткам працэсу жэлавання смалы смалу неабходна заліць у паражніну формы, і ціск прымушае смалу хутка пераносіцца ў форму і прасякаць валакна.

3. Ліццё SMC (масавы BMC)

Add initiators, fillers, pigments, internal mold release agents, low-shrinkage additives, thickeners, etc. into the resin, and mix them to form a resin paste. The resin paste falls on the lower film of the SMC unit (commonly used polyethylene film or nylon film), and at the same time, it settles on the lower film and chopped into 25～55mm glass fiber strands, and then is covered with a layer of film to become a sheet. Sandwich roll. Store the coil for several days to thicken the material to reach a moldable viscosity. SMC is supplied as a backup in a bundled state. The coil is unrolled, cut, weighed, put in the heated steel mold platinum, pressurized to solidify and mold, and then the finished product is obtained.