Date | 2022-08-30 12:34:59
BMC is a thermosetting plastic that is mixed with various inert fillers, fibre reinforcements, catalysts, stabilisers and pigments to form a viscous 'putty-like' compound for compression or injection moulding. Extrusion is often used to form the material into pellets, logs or strips for subsequent processing and forming. BMC's high stiffness, light weight, corrosion resistance, UV resistance, good insulation and thermal properties make BMC more popular than thermoplastics. Also, as many components can be formed at the same time as these, no post-treatment is required, which is more economical from a production point of view. BMC moulds are currently used in automotive, energy, electrical, food service, household appliances, optical instrument components, industrial and construction products etc. MDC has developed a wide range of BMC mould products such as tail light covers, electrical boxes, instrument boxes etc. SMC mould forming moulds / SMC moulds SMC is a sheet forming compound. The main raw materials for SMC are GF (special yarn), UP (unsaturated resin), low shrinkage additives, MD (filler) and various additives.
SMC has excellent corrosion resistance, flexibility, ease of engineering and pliability. Its mechanical properties are comparable to those of certain metal materials. Its products have the advantages of good rigidity, resistance to deformation and a wide range of working temperatures. In addition, SMC products are not easily deformed in size, have excellent heat resistance, maintain performance in both hot and cold environments, and are suitable for outdoor UV resistance and water resistance functions. At present, MDC has developed SMC moulded products for different types of applications, including front and rear bumpers, door panels, appliances, bathtubs, etc. The basic process of SMC moulding is to place a quantity of pre-treated moulding material into a pre-heated mould and apply high pressure to fill the mould cavity with the moulding material. The moulding compound is gradually cured in the mould cavity under predetermined temperature conditions. The SMC product is then removed from the mould and the necessary auxiliary treatments are carried out to obtain the final product. The sheet moulding compound (SMC) moulding process involves cutting the desired sheet moulding compound (SMC) into the required shape, removing the protective film from both sides, folding it according to certain requirements and placing it in the mould. Heat and pressure are applied at the appropriate locations according to the specified process parameters. The compaction process for composite moulded products is the process of curing the compacted material into a product in the mould cavity in the presence of a curing agent or under curing conditions, as shown in the diagram. Heating. Forming temperature and forming pressure together affect the quality of the SMC product and the optimum forming temperature, forming pressure and holding time need to be determined taking into account the various influencing factors.