Application of foam plastic casting
DATE：2021/10/28 8:36:31 / READ： / SOURCE：This station
Application of foam plastic casting
Compared with other foam molding methods, foam molding has the following characteristics.① The raw material is a low-viscosity mixture after casting, the viscoelasticity of the raw material gradually increases with the progress of the polymerization reaction until it is solidified and shaped;
2. The foaming process and the polymerization reaction process go hand in hand at the same time;
③It is mainly used for molding high-foam plastic products; the molding equipment is relatively simple and can be operated on site;
It can be used to form large blocks of foamed plastic products and spray foamed plastic layers. Due to the above characteristics of casting foam molding, it has become the main molding method of foam plastics and has occupied an irreplaceable position, especially for thermosetting foam plastics, most of which are formed by this method.
Ammonia has become an indispensable material in many industrial sectors. Because of the variability of the polyurethane foam manufacturing formula and the adaptability of the product performance, its wide application is determined. This feature is that any other plastics cannot be used with it. Compared to.
At present, high-quality urethane foam has been widely used in furniture, beds, automobiles, aviation, packaging, textile composite foam pads, carpets, sports equipment, toys, prosthetics, daily necessities, materials, gardening, shoes and hats, medical and health products , Construction, military and national defense. The essential urethane foam has been widely used in refrigeration equipment, tank trucks, petrochemical pipes, storage tanks, heat preservation, construction, aviation, shipbuilding, packaging, electrical appliances, space technology and military. Semi-rigid polyurethane foam is mainly used in shock-proof parts and interior decoration of automobiles and airplanes.
Author：admin