What is the TPU plastic raw materials

TPU overview of plastic raw materials and definition: the definition of engineering plastics is the plastic raw material can substitute for metal products, its heat resistance to 0 degrees, at least up to 000 degrees, its color is very light weight, good rigidity, modification can be achieved through a variety of physical properties, general plastic raw material sources are oil and refined out of chemicals. Is a polymerization of polymer resin. Strengthen fire prevention of engineering plastics additives are: halogen and non halogen ( Phosphate ester) Fire retardant. Chemical performance enhancements: stabilizer, antioxidant, surface modification agent processing. . TPU plastic raw material and nozzle: raw material is directly never drawn out from inside the oil processing, shuikou is after a high temperature molding plastics, raw materials of chemical stable performance and physical performance is good, the nozzle of the physical is much less than the raw material, easy to brittle, is easy to crack, toughness is far less than the raw material, its forming the more times its expected more brittle. Raw materials and shuikou resolution: up from color to distinguish the material floolwing products used blond, black larger scale. Material floolwing do not transparent products, general product material floolwing is not greater than 35%, the ratio of low products material floolwing can reach 00%. Second fracture a black material floolwing do big products. TPU plastic raw material of introduction: pouring system, gating system refers to the mold from the injection machine nozzle begin by the end of the cavity plastic flow channel. Gating system in several large system is most important. The basic principle of designing gating system: at the same time in the meet the quality of plastic products, but also should be conducive to improve the forming speed to shorten the molding cycle. With the mainstream way, distributary channel, gate and cold slug well. From the injection machine nozzle to mold cavity molten plastic path called port, among them, the gate set inside plastic flow is called the mainstream way, the rest is called shunt. Distributary channel called the gate to the cavity at the end of the orifice, not to the end of the cavity of the shunt way set cold slug well. TPU injection molding of plastic raw materials in the note: injection molding for a wide variety of adverse phenomenon, the main factors are the following five plastic raw material itself due to the nature of the differences, the two forming conditions such as temperature, pressure, rate of improper setting, such as 3 forming mould design or production caused by defective, 4 forming shape, thickness and other improper design, improper selection of 5 injection molding machine, inadequate ability, the reasons of the poor injection molding is not actually simple, usually caused by multiple staggered by the above factors, on the reason of the bad decision to rely on workers experience and technology. Cavity filling process. Advice when processing can consult relevant professionals, in order to reduce loss cost.