█PBT W1000I 〒PP is a monomer for polymerization of propylene into Junju polypropylene, another is DI produced by a reaction kettle homopolymer PP into the formation of ethylene propylene ethylene copolymer, ethylene propylene elastic segment is formed. The PP-B resin is essentially a copolymerization modification of homopolymerization PP with ethylene. The modified PP-B resin has the advantages of both PE and PP. PP-R is a random polypropylene modified by ethylene on the basis of copolymerization PP. The molecular weight of the random Zui is only tens of thousands of PP. The cohesive force is small, the melting point is low and the mechanical properties are poor. Only the random PP modified by ethylene can be used in practice. The modification process is that the propylene is gasified and fed into the reaction vessel by gas phase method. The material is sent from the DI reactor to the second reactor with an air lock system, and ethylene is added to the second reactor. The propylene catalyst with high activity and high selectivity was added to the upper part of the reactor and stirred evenly on the powder layer by stirring. The copolymer was formed by controlling the ratio of ethylene to propylene. The polymer changes the conformation of the PP chain and causes ethylene to polymerize randomly and uniformly on the molecular chain of PP. By weather, and PP heat resistance; 2, excellent anti deformation performance of Yong for a long time; 3, good tensile strength, high toughness and high elasticity; 4, excellent environmental performance and can be used repeatedly; 5, excellent electrical insulation properties; 6, hardness range; 7, using temperature range wide; 8, color variety, are completely transparent, translucent, light color series, easy coloring, easy to process; 9, with PP, PA, PC, ABS, PS, PBT, PET, and other materials co injection?or?extrusion molding. TPV 8221-60, TPV 203-50, TPV 281-45MED, TPV 281-55MED, TPV 281-64MED, TPV 281-73MED [] = = = = content segmentation PC / / /ABS A2200MP electroplating plating effect has outstanding and excellent low temperature performance, can be applied to car handle plating parts. Note: /PC, plastic molding process problems reasons and solutions to 1, silver a, the raw material moisture - dried raw material B resin, thermal decomposition, reduce the molding temperature C, screw compression ratio is small, insufficient pressure - increasing back pressure, d the mold temperature is too low, the heating mould ratio, PP-R material stress crack resistance has been greatly improved, and the temperature in the internal and external pressure, the performance degradation is very slow, is currently used for the production of conveying hot water Zui is one of the ideal materials. PP polypropylene is a kind of high rigid material and belongs to polyolefin with PE. The homopolymer density is as low as 0.90. Glass fiber and minerals (such as calcium carbonate) can be added. PP is not suitable for use below 0oC. If it is to be used at subzero temperatures, butadiene must be copolymerized, thus resulting in copolymerization of PP. The operating temperature of homopolymerization PP is 90oC, and the chemical (acid and base) properties are very good. Parts produced with homopolymer PP have very low moisture absorption, but they shrink considerably during injection. The electrical properties are good, but they are resistant to ultraviolet light and have poor penetration resistance. Chemical modification of the commonly used method which is a kind of modified resin monomer is one yuan, modified monomer for another element, graft copolymerization in the reactor and obtain new copolymer; the second method is to be modified resin as the main raw material, through the modification of its effective to increase the polarity of the resin molecular elements. Polypropylene is widely used in the production of plastic pipes, but PP is a material with poor anti-aging properties. In order to improve the performance of PP, PP-B and PP-R resin are invented by chemical modification. PP-B resins are block copolymers of propylene and ethylene. The synthesis of propylene ethylene block copolymers uses two polymerization reactors, PA66, which are solvent resistant to many solvents, but less resistant to acids and other chlorinated agents. Drying of processing conditions: if the material is sealed before processing, then there is no need to dry. However, if the storage container is opened, it is recommended to be dried in hot air at 85 degrees centigrade. If humidity is greater than 0.2%, a vacuum drying of 105 DEG C?or?12 h is required. Melting temperature: 260~290 DEG C. The product of glass additive is 275~280 DEG C. The melting temperature shall be avoided above 300 degrees centigrade. Mold temperature: 80 c.. The mold temperature will affect the crystallinity, while the crystallinity will affect the physical properties of the product. For thin wall plastic parts, if the die temperature is below 40 degrees, the crystallinity of the plastic will change over time. In order to keep the geometrical stability of the plastic parts, annealing is necessary. Injection pressure: usually at 750~1250bar, depending on the material and product design. Injection speed: high speed (for reinforced material should be slightly lower). High impact resistance, excellent weatherability and Matt effect of high performance PC / / /ABS A2200 alloy material has, can be used in car audio systems, car dashboard and DVD etc..