BMC (DMC) material is an abbreviation for Bulk (Dough) molding compounds, also known as bulk molding compounds. It is commonly referred to as unsaturated polyester bulk molding compound in China. Its main raw materials are GF (short cut glass fiber), UP (unsaturated resin), MD (filler calcium carbonate), and various additives that are fully mixed to form a pellet like prepreg. DMC materials were first applied in West Germany and the United Kingdom in the 1960s, and then developed significantly in the United States and Japan in the 1970s and 1980s, respectively. Due to its excellent electrical properties, mechanical properties, heat resistance, chemical corrosion resistance, and adaptability to various molding processes, BMC bulk molding materials are increasingly favored by users for meeting the performance requirements of various products.
BMC is a thermosetting plastic that is mixed with various inert fillers, fiber-reinforced materials, catalysts, stabilizers, and pigments to form an adhesive used for compression molding or injection molding; Oil gray state; compound material. Bulk molded plastics (BMC) are highly filled and reinforced with short fibers, with glass fiber reinforcement material accounting for 10% to 30%, and typically ranging in length from 1/32 inch to 1/2 inch (12.5mm).
According to different end application fields, composite materials can be precisely controlled in size, with good flame retardancy and resistance to electric traces. They have high dielectric strength, corrosion resistance, and stain resistance, excellent mechanical properties, low shrinkage, and stable color. BMC has good flow characteristics, insulation, and flame retardancy, making it highly suitable for various applications that require precise details and dimensions. The material has 75 colors to choose from and can withstand powder spraying or water-based coatings.