Definition BMC is the acronym of Bulk Molding Compound in English and its Chinese name is ball molded plastic or polyester ball. BMC is a semi-dry molding / injection intermediate material for manufacturing glass fiber reinforced thermosetting products, which is pre-mixed into paste by unsaturated polyester resin, low shrinkage / low profile additive, initiator,
10. FRP gel coat resin and polyester paste 10.1 FRP gel coat resin In general, we make a gel coating resin on the surface of custom bumpers, which is a surface layer with high resin content. And it has many purposes. For example, change the surface brightness of the front bumper, improve the corrosion
1. FRP material introduction In general, glass fiber reinforced plastic is commonly known as GRP FRP. If the reinforced plastic is made of unsaturated polyester resin. Then, we call it unsaturated polyester resin glass reinforced plastic (here in after referred to as GRP or FRP). As GRP manufacturers all know, it has low price,
Compression Molding Compression molding is considered as the main method for making many structural car body parts, including wheels, fiberglass bumpers, fiberglass manhole cover and plate-spring. The entire process of pressure forming is accomplished by converting the sheet plastic into the FRP finish in the mold. It can generate complex geometric shapes in a
FRP Pultrusion Method Pultruded composites consist mainly of fibers, and predominantly resin-impregnated in the axial direction. It makes them one of the most effective composites. And surface mats are used for surface appearance and to improve chemical and weathering. We often widely use polyester resin in pultrusion FRP products. As we know, pultrusion process is one
Filament Winding Method We always use resin impregnated fiber or fiber glass, aromatic polyamide fiber or carbon fiber wrapped in the axis of rotation of the desired pattern for filament winding. Generally, this method makes the fiberglass product without void possible and makes high fiber volume ratio up to 80%. In wet method, the fiber
Composite layup process Hand layup method is the oldest FRP molding method for making FRP GRP composite products. It does not require technical skills and machinery. It’s a way of small volume and high labor intensity, especially suitable for large parts such as FRP vessel. Half of the mold is usually used during composite
