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What is the main molding method of epoxy glass fiber board

ingا جو بنيادي ingاھڻ جو طريقو آھي epoxy گلاس فائبر بورڊ

1. ھٿ ليپ اپ- گلي ليپ اپ

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. Resin وجھڻ ۽ resin منتقلي RTM مولڊنگ

RTM ھڪڙو بند moldھيل گھٽ د pressureاءُ وارو ingھڻ جو طريقو آھي. رکي فائبر کان وcedيڪ مضبوط مواد کي مٿين ۽ هي lowerين sچن جي وچ ۾ moldھيل بند ڪريو ۽ moldھيل کي ڪيو دinاء هي the رال داخل ڪريو openھيل کي کوليو جڏھن رال uredيڪ ٿي وي ، ۽ پيداوار کي ھٽايو. ان کان ا the جو رال جيليشن وارو عمل شروع ٿئي ، رال کي theريو و theي سھڻي گفا ۾ ، ۽ د pressureاءُ وpائي ٿو رال کي جلدي سان moldھيل ۾ منتقل ڪرڻ ۽ فائبر مادي کي reمائڻ لاءِ.

3. شيٽ جي oldاھڻ SMC (بلڪ 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.