BMC is the initial abbreviation of English Bulk Molding Compound, and the Chinese name is a group molding compound. BMC is a semi-dry method for manufacturing glass fiber reinforced thermosetting products. It is pre-mixed into a paste by unsaturated polyester resin, low shrinkage/low profile additive, initiator, internal mold release agent, mineral filler, etc. Add thickeners, colorants, etc., and glass fibers of different lengths, stir in a special tank to carry out thickening process, and finally form a layered intermediate material, which can be used for molding and injection molding.
DMC is the abbreviation of “Dulk Moulding Compounds” in English, meaning “bulk molding compound”, which is a new type of composite material with advantages of light weight, corrosion resistance, good insulation and bright colors.
BMC (DMC) series of molding compounds have excellent performance, reasonable formula, advanced technology, easy molding (multiple molding processes such as press molding and injection molding or transfer molding), low molding shrinkage, high dimensional accuracy, and processing. It has the characteristics of good performance, etc. It is an ideal material for manufacturing various high and low voltage electrical outer casings and insulating parts, large insulating sheets and other products with high electrical strength and mechanical strength. The finished products have excellent electrical insulation and heat resistance. , flame retardancy and good mechanical strength, currently widely used in electronics, automotive, instrumentation, sanitary ware and other industries, and gradually expand to other areas, injection molding plastics for high-precision export products and The packaging process has special requirements for this material.
BMC (DMC) material classification:
1, ordinary type:
It has good mechanical properties, corrosion resistance and aging resistance. It is mainly used to replace metal plates, cars, tractor fenders, train window frames, chairs, tea tables, driving warehouses, sanitary ware, anti-corrosion lamps, lamp holders, etc.
2, electrician type:
It has good mechanical properties, electrical insulation, arc resistance and anti-static properties, and its appearance is beautiful. It can be widely used in argon arc hood, argon arc sheet, junction box, high and low voltage electrical parts, insulation structural parts, anti-static Type materials used in coal mining, textile and other industries.
3, high-strength type:
It has higher mechanical strength than ordinary type, and also has good electrical performance. It is mainly used for structural parts with high mechanical strength such as car bumpers, bridges, door beams, tool handles and helmets.
4, corrosion resistant
With acid, alkali and other chemical properties. Widely used in corrosion resistant valves, pipe joints, blades, pipes, and acid or alkaline battery boxes.
5, daily type:
It can be directly contacted with food and daily necessities, safe, non-toxic and tasteless. It can be used in turnover boxes, storage boxes, aquatic freezer boxes, etc.
According to different products, choose the right materials for product production, and press-formed products by hydraulic machine and compression molding
Post time: Jun-23-2019