BMC/DMC material is the English abbreviation of Bulk molding compound/Dough molding compound. Its main raw materials are chopped glass fiber (GF), unsaturated polyester resin (UP), filler (MD), and a mass prepreg made of fully mixed additives. It is one of the thermosetting molding materials.
BMC materials have excellent electrical properties, mechanical properties, heat resistance, and chemical corrosion resistance, and are suitable for various molding methods such as compression molding, injection molding, and transfer molding. BMC material formula can be adjusted flexibly to meet the performance requirements of various products. It is mainly used in electrical appliances, motors, automobiles, construction, daily necessities, and other fields.
Application Field of BMC
1. Electrical components
1) Low-voltage category: RT series, isolating switch, air switch, switchboard, electric meter casing, etc.
2) High voltage: insulators, insulating covers, arc extinguishing covers, closed lead plates, ZW, ZN vacuum series.
2. Auto parts
1) Car light emitters, that is, Japanese car light reflectors are almost all made of BMC.
2) Car igniters, separation discs and decorative panels, speaker boxes, etc.
3. Motor parts
Air-conditioning motors, motor shafts, bobbins, electric and pneumatic components.
4. Daily necessities
Microwave tableware, electric iron casing, etc.
SMC is the abbreviation of Sheet molding compound. The main raw materials are composed of SMC special yarn, unsaturated resin, low shrinkage additive, filler, and various auxiliary agents. SMC has the advantages of superior electrical performance, corrosion resistance, lightweight and easy and flexible engineering design. Its mechanical properties are comparable to some metal materials, so it is widely used in transportation vehicles, construction, electronics/electrical and other industries.
SMC Application Fields
1. Application in the automobile industry
Developed countries such as Europe, the United States, and Japan have widely used SMC materials in automobile manufacturing. It involves all types of cars, buses, trains, tractors, motorcycles, sports cars, agricultural vehicles, etc. The main application parts include the following categories:
1) Suspension parts Front and rear bumpers, instrument panels, etc.
2) Body and body parts Body shell, monocoque roof, floor, doors, radiator grille, front end panel, spoiler, luggage compartment cover, sun visor, fender, engine cover, headlight reflector mirror.
3) Components under the hood, such as air conditioner casing, air guide cover, intake pipe cover, fan guide ring, heater cover, water tank parts, brake system parts, battery bracket, engine sound insulation board, etc.
4) Interior trim parts Door trim panels, door handles, instrument panels, steering rod parts, mirror frames, seats, etc.
5) Other electrical components such as pump covers, and drive system parts such as gear sound insulation panels.
Among them, bumpers, roofs, front face parts, engine covers, engine sound insulation panels, front and rear fenders and other parts are the most important and have the largest output.
2. Application in railway vehicles
It mainly includes window frames of railway vehicles, toilet components, seats, tea table tops, carriage wall panels, and roof panels, etc.
3. Application in construction engineering
1) Water tank
2) Shower supplies. The main products are bathtubs, showers, sinks, waterproof trays, toilets, dressing tables, etc., especially bathtubs, and sinks for overall bathroom equipment.
3) Septic tank
4) Building formwork
5) Storage room components
4. Application in the electrical industry and communication engineering
The application of SMC materials in the electrical industry and communication engineering mainly includes the following parts.
1) Electrical enclosure: including electrical switch box, electrical wiring box, instrument panel cover, distribution box, and water meter box.
2) Electrical components and motor components: such as insulators, insulation operation tools, motor windshields, etc.
3) Electronic engineering applications: such as printed circuit boards of electronic machines, etc.
4) Communication equipment applications: telephone booths, wire and cable distribution boxes, multimedia boxes, and traffic signal control boxes.
5. Other applications
1) Seat
2) Container
3) Pole jacket
4) Tool hammer handle and shovel handle
5) Catering utensils such as vegetable sinks, microwave tableware, bowls, plates, plates, and other food containers.
Press BMC and SMC Products with Composite Material Hydraulic Press
Zhengxi is a professional manufacturer of hydraulic equipment, providing high-quality composite hydraulic presses. The hydraulic press is mainly responsible for the compression molding process in the process of producing various BMC and SMC products. Using various molds, through high pressure and thermosetting molding. According to different molds and product formulas, composite hydraulic presses can produce composite products of various shapes, colors, and strengths.
Zhengxi’s composite molding hydraulic press is suitable for heating and compression molding of SMC, BMC, resin, plastic, and other composite materials. It is currently used in the pressing and molding of FRP septic tanks, water tanks, meter boxes, trash cans, cable brackets, cable ducts, auto parts, and other products. Two heating methods, electric heating or oil heating, are optional. The valve body is equipped with functions such as core pulling and pressure maintenance. The frequency converter can realize the function of fast down, slow down, slow back, and fastback in the molding process. PLC can realize the automation of all actions, and all configuration and parameter requirements can be customized.
We can provide customized services for composite material hydraulic presses according to customer needs. If you have any needs, please contact us.
Post time: Jul-15-2023
