PP金发驻级母粒

pp金发驻级母粒

pp polypropylene is a crystalline plastic with an irregular roundsurface with white waxy luster and colored particles. density0.9-0.91 g / cm, is the species in plastics. the melting point isabout 170 °c and the decomposition temperature is above 290 °caccording to the crystallinity and molecular weight, so it has awide range of molding temperature, molding shrinkage 1.0-2.5% . ppcan be used at 100 °c, with good electrical propertiesuency insulation, and not affected by humidity. but thelow temperature brittle, not wear-resistant, easy to aging.suitable for making general mechanical parts, corrosion-resistantparts and insulation, parts. in addition, the hinge made of ppmaterial has excellent fatigue resistance. typical applicationrange, in medicine, food, chemical and other industries andpeople's daily life has a wide range of uses.

pp is a semi-crystallinematerial. it is harder than pe and has a higher melting point.because homopolymer pp is very brittle when the temperature ishigher than 0 °c, many commercial pp materials are clamp blockcopolymers with 1-4% ethylene or higher ethylenecontent. 

聚丙烯-单聚合物:（mfr=熔融指数）

供应pp pt181: 主要特性：mfr=0.4,fm=14200 特性：真空成型，板，管，瓶；

供应pp pt182: 主要特性：mfr=0.4,fm=13000 特性：真空成型，板，管；

供应pp pt100: 主要特性：mfr=1.6,fm=15700 特性：押空成型，板，管，瓶，打包带；

供应pp 366-3: 主要特性：mfr=3,fm=16400 特性：编织带，薄板，打包带，射出成型；

供应pp 366-4: 主要特性：mfr=4,fm=16900 特性：编织带，薄板，打包带，射出成型；

供应pp 366-5: 主要特性：mfr=5.5,fm=17700 特性：编织带，薄板，打包带，射出成型；

供应pp 3661-11: 主要特性：mfr=11,fm=18000 特性：薄膜，射出成型；

供应pp pd943: 主要特性：mfr=10.8,fm=18000 特性：吹袋，射出成型；

供应pp hp560p: 主要特性：mfr=12,fm=13100 特性：复丝，地毯纱；

供应pp 3661: 主要特性：mfr=14.5,fm=17200 特性：复丝，射出成型（家电品）；

供应pp pt331m: 主要特性：mfr=14.5,fm=20000 特性：射出成型（瓶盖，容器）；

供应pp 6231-20: 主要特性：mfr=20,fm=16800 特性：射出成型（瓶盖，容器）；

copolymer-type pp materialshave lower thermal distortion temperature (100 °c) , highertransparency, lower gloss and lower rigidity, but higher impactstrength. the impact strength of pp increases with the increase ofethylene content. the vicar softening temperature of pp was 150 °c.due to its high crystallinity, the material has good surfacestiffness and scratch resistance. pp does not have the problem ofenvironmental stress cracking. generally, pp is modified by addingglass fiber, metal additive or thermoplastic rubber. the mfr of ppis in the range of 1 ~ 40. pp with low mfr had better impactresistance but lower tensile strength. for the same mfr material,the impact strength of copolymer type is higher than homopolymertype. as a result of crystallization, the shrinkage of pp is , generally 1.8 ~ 2.5% . and the directional uniformity ofshrinkage is much better than that of pe-hd and other materials.the shrinkage was reduced to 0.7% by adding 30% glass additive.homopolymer and copolymer type pp materials have excellent moistureabsorption resistance, anti-acid-base corrosion resistance,anti-solubility. however, it is not resistant to aromatichydrocarbon solvents such as benzene and chlorinated hydrocarbon(tetrachloromethane) solvents. pp does not have the same hightemperature oxidation resistance as pe. oh, shit