Fiberglass GFK GFK SMC BMC Material

SMC is the abbreviation of sheet Molding Compound and it is often called unsaturated polyester dough molding compound in China. It is dough soaked materials made up of mixed short glass fibers unsaturated resin, fillings and various additives. SMC materials was first applied in Federal Germany and UK in 1960s , and then was greatly developed in U.S.A in 1970s and in Japan in 1980s respectively. Because it is endowed with favorable electrical property, mechanical performance, good high-temperature proof and chemical anti-erosion as well as being anti-erosion, it is adoptable for various processes, that is to say, it can meet performance requirements for different products, and it is widely used in all areas. APPLICATIONS: 1. Electrical Parts: Low voltage types: RT series, isolation switch, panel of switch, shell of ammeter etc. 2. Automobile Parts: Dynamo reflector, almost all Japanese dynamo reflectors are made of SMC. Automobile lighter, separator and decorating plank, speaker box etc. 3. Dynamo Parts: Air-conditioner motor, dynamo shaft, winding framework, electrical and pneumatic parts. 4. Commodities: Microwave oven dishware, electronic shell etc. PACKAGE, TRANSPORTATION AND STORAGE SMC molding compound series are sealed in compound membrane bag, 25kilogram per bag, tied up and put into paper box; Heavy pressure, heat , wetness and package damage should be avoided during transportation; Validaty period is three months from the product date under the temperature below 25 in sunless dry storehouse, overdue can be reused if it is qualified after test. SMC SERIES MOLDING COMPOUND PROCESS: Die Molding temperature:150ºC±5ºC Duration :60-70s/mm Pressure:10-20Mpa Practical process should be measured according to the products and mold structure, if the products are thick, the temperature should be lower. Most molding temperatures are 135ºC±145ºC. Higher molding pressure is required for complicated products.