Dongguan plastic materials to use, plastic materials, plastic Shuttle

 PC polycarbonate plastic raw materials, low surface tension, the surface was Depend Dongguan plastic materials and practical, active groups rarely, is not conducive to the coating adhesion. Further, the surface there may tanker, dust and other contaminants, so in general to be necessary before the coating process. Simple approach is to use an aqueous solution containing a surfactant, methanol, ethanol, propanol, isopropyl rubbing, short-chain alcohols and other alcohol having 1 to 6 carbon atoms, acetone, vinyl chloride, Freon and other milder solvent or a mixed solvent, or combined with ultrasound physically cleaned to remove surface grease, dust and dirt. Another method is to use an oxidant such as chromic acid lotion into line appropriate chemical treatment, this method in addition to the dust cleared, while oil adsorbed on the surface of a COOH -OH also have some other polar groups, these stations group Not only the surface of the substrate can be improved, but also during the curing process can be Si-OH coatings and the like Si-OR group is reacted with increased interfacial adhesion, improve coating adhesion. A third method is to pre-treatment of the intermediate layer precoated substrate surface. Multilayer coating method can better increase the adhesion between the coating and the substrate. In front of the sol - gel method belongs multilayer coating category. _ Sol-gel method, by controlling the silicon, aluminum, titanium oxide and Nuo complete hydrolysis and condensation can be produced inorganic - organic hybrid materials form an inorganic network and the introduction of an organic group Dongguan plastic by silicate derivatives Good quality of raw materials, these organic groups, one turned to change properties of the coating of plastic raw materials, on the other hand can be used to generate specific organic polymer material system. PC polycarbonate plastic raw materials because it contains benzene nucleus class optical anisotropy large group, and the melt viscosity is high, liquidity is small, the molding process can lead to molecular chain extension orientation, residual stresses. Principal refractive index difference between the photoelastic coefficient and stress is proportional to the product of glassy polymers, photoelastic coefficient and molecular structure. Photoelastic coefficient polycarbonate PC plastic materials than polymethyl methacrylate many large, so large birefringence PC polycarbonate plastic raw materials. PC polycarbonate plastic raw materials reduced birefringence, can use the following methods. ① strict control of molding conditions, reduce the disk tray group in the residual stress. ② appropriate to reduce the molecular weight, improved melt fluidity, molecular orientation and thereby reduce the internal stress, reduced birefringence. PC polycarbonate plastic raw materials ③ change the molecular structure of the plastic materials Dongguan good, with the direction of the main chain branched bisphenol polarization direction is small, to reduce the birefringence part by a flexible chain substituted bisphenol bisphenol A, in order to improve the molding mobility, reduced molecular orientation. ④ positive birefringence aromatic polycarbonate, polystyrene negative birefringence, the 60% PC and 40% PS- maleic anhydride copolymer blends, their birefringence can offset each other to near zero , but the differences between PC and PS plastic materials plastic materials melt viscosity, PC and PS components can migrate, showing macroscopic phase separation, making it difficult to achieve the desired results, the improved method is PS grafted onto the PC, PC Preparation -PS graft polymer. Dongguan plastic materials to use, plastic materials, provided by the Shuttle XPC plastic (Dongguan) Plastics Co. Shuttle (Dongguan) Plastic Materials Co., Ltd. (www.hx923.com) strong, credible, in Dongguan, Guangdong's plastics industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shuttle plastic and you hand into the brilliant, for a better future!