plastics raw materials crystallization property

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Date: 2019-11-18 10:03 Views: 2652 Source: Internet

plastics formed is many 线状, fine long polymer/macromolecule combined material formed combined 体, separation formed positive 规排列程 degree, is crystallization degree （ crystallization degree ）, crystallization degree can use x线反射 amount 测. has machine combined material complex, plastics 构造 more complex, separation 子链构造（线状, 毛球状, 折迭状, 螺旋状 and other ） more 变化, its 构造亦因 formed conditions different has very large 变化. crystallization degree large plastics is crystallization property plastics, separation 子间引 force easy versus function, formed is strong/high tough plastics. is need crystallization and positive 确排列, 故体积变 small, formed shrinkage rate and hot rate large. therefore, crystallization property high, transparent property 越差, strong/high degree large.

crystallization property plastics raw materials has obvious melting point (Tm), solid separation 子呈规则排列, strong/high degree relatively strong/high, force relatively strong/high. understanding ratio 容积变化 large, solid rear relatively easy shrinkage, internal stress easy 释放出, formed product transparent, formed in dispersion hot slow, cold production day rear shrinkage relatively large, hot production day rear shrinkage relatively small. versus for/regarding crystallization property plastics, has types is non crystallization property plastics, its obvious melting point, solid separation 子呈不规则排列, understanding ratio 容积变化不 large, solid rear easy shrinkage, formed product transparent property 佳, material temperature high color 泽越黄, formed in dispersion hot fast, below/following for material property comparison.

material property	crystallization property	non crystallization property
specific gravity	relatively high	relatively low
tensile strength	relatively high	relatively low
tensile 模数	relatively high	relatively low
延展 property or elongation	relatively low	relatively high
resistant impact property	relatively low	relatively high
most high use temperature degree	relatively high	relatively low
shrinkage rate and warpage	relatively high	relatively low
flow property (MI)	relatively high	relatively low
chemical resistance	relatively high	relatively low

material property	crystallization property	non crystallization property
wear resistant consumption property	relatively high	relatively low
resistant property (Creep)	relatively high	relatively low
hardness	relatively high	relatively low
transparent property	relatively low	relatively high
add glass fiber (GF) strong/high 效果	relatively high	relatively low
dimensions property	relatively 差	relatively 佳
****	relatively difficult	relatively easy
heat resistant property	relatively high	relatively low
折动 property	relatively 佳	relatively 差

thermoplastic property plastics can crystallization property and non crystallization property separation, below/following 列举数例:

	crystallization property plastics	non crystallization property plastics
commonly used plastics	polyethylene (PE) (Polyethylene, PE) polypropylene (PP) (Polypropylene, PP)	polyvinyl chloride (PVC) (Polyvinyl Chloride, PVC) propylene 睛- butadiene - styrene polymer (Acrylonitrile-Butadene-Styrene, ABS) pressure force (Acrylic Resin, PMMA)
commonly used engineering plastics	nylon (Polyamide, PA-6, PA-66, PA-46, PA-11, PA-12) terephthalic acid ester (Polyethylenephthalate, PET) terephthalic acid ester (Polybutylenephthalate, PBT) poly shrink aldehyde (Polyacetal, Polyoxy Methylene, POM)	polycarbonate (PC) (Polycarbonate, PC)
特殊 engineering plastics	polyphenylene sulfide (PPS) (Polyphenylene Sulfide, PPS) liquid 晶(Liquid Crystal Polymer, LCP) poly ether ketone (Polyether Ether Ketone, PEEK) fluorine carbon resin (Polytetrafluorcethylene, PTFE) poly oxygen ester (Polyoxybenzylene, POB)	polyether (Polyphenylene Sulfide, PES) poly 讽(Polysulfone, PSF) poly ester (Polyarylate, U-Polymer, PAR) polyether amine (Polyetherimide, PEI) poly amine amine (Polyamideimide, PAI

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plastics raw materials crystallization property