Shanghai Daoqin Plastics Co., Ltd.

P S1 PS property can PS is 无定形 polymer, flow property good, water absorption low （ small 于00.2%）, is types easy molding processing transparent plastics. its products light transmittance 达88-92%, color force strong/high, hardness high. 但PS products property large, easy generate internal stress cracking, heat resistant property relatively 差（60-80℃）, 无毒, specific gravity 1.04gcm3 left right （稍 large water ）. 2 PS process features PS melting point is 166℃, processing temperature degree generally in 185-215℃ is 宜, separation understanding temperature degree is 290℃, its processing temperature degree scope/range relatively wide. PS material in processing front, can use drying, due to its MI relatively large, flow property good, injection pressure can low. 因PS ratio hot low, its made as 一 injection molding parts mold dispersion hot can very fast cold solid 化, its cooling speed degree ratio generally raw materials need fast, mold opening time can 早一. its time and cooling time relatively short, molding cycle time decrease/reduce 一; PS products gloss mold temperature increase good. HIPS1 HIPS property can HIPS is PS modified material, separation in has 5-15%橡胶 formed 份, its tough property ratio PS improve/increase left right, impact strong/high degree large large improve/increase. it tool has PS tool has molding processing, color force strong/high advantages. HIPS products is transparent property. HIPS吸 water property low, processing can 不需预先 drying. 2 HIPS process features 因HIPS separation in has 5-15% 橡胶, in 一定程 degree upper effect/influence its flow property, injection pressure and molding temperature degree high 一. its cooling speed degree ratio PS slow, 故需足够 holding pressure pressure, holding pressure time and cooling 进间. molding cycle ratio PS稍 long 一点, its processing temperature degree generally in 190-240℃ is 宜. HIPS made parts in in 一 特殊 “白边” issues, through improve/increase mold temperature and clamping force, decrease/reduce holding pressure pressure and time and other method improvement, product in water comparison obvious. AS（SAN）1 AS property can AS is styrene - propylene copolymer 体, easy generate internal stress cracking. transparent degree very high, its soft temperature degree and impact strong/high degree ratio PS high. 2 AS process features AS processing temperature degree generally in 200-250℃ is 宜. material easy wet, processing front drying small above, its flow property ratio PS稍差一点, injection pressure high 一. mold temperature control in 45-75℃ relatively good. ABS1 ABS property can ABS is propylene 睛- butadiene - styrene terpolymer, tool has relatively high machine strong/high degree and good “坚, tough, 钢” comprehensive property can. it is type polymer, ABS is types general purpose type engineering plastics, its product types more 样, applications 广泛, 也称“ general purpose plastics ”, （MBS称 is transparent ABS）, ABS easy wet, specific gravity is 1.05g/cm3（ ratio water heavy ）, shrinkage rate low （0.60% ）, dimensions stability, easy molding processing. 2 ABS process features 2.1 ABS wet property and wet property relatively large, in molding processing front must 进行充 separation drying and preheating, will water separation content control in 0.03% below/following. 2.2 ABS resin melt viscosity for temperature degree property relatively low （ and its it type resin different ）. ABS injection temperature degree although ratio PS稍 high, can 像PS that has wide rise temperature scope/range, can use rise temperature method remove low its viscosity, can use increase screw speed or injection pressure method improve/increase its flow property. generally processing temperature degree in 190-235℃ is 宜. 2.3 ABS melt viscosity in and other, ratio PS, HIPS, AS均 relatively high, using/adopting relatively high injection pressure 啤货. 2.4 ABS material using/adopting in and other injection speed degree 啤货效果 relatively good. （ remove non complex, thin made parts use relatively high injection speed degree ）, product water easy generate gas marks. 2.5 ABS molding temperature degree relatively high, its mold temperature generally adjustment in 45-80℃. production relatively large product 时, 定模（ front 模） temperature degree generally ratio 动模（ rear 模）略 high 5℃ left right is 宜. 2.6 ABS不宜 in high temperature inner time long （应 small 于30 separation 钟）, easy separation understanding 发黄. BS（K material ）1 BS property can BS is butadiene - styrene copolymer, it tool has tough property and elastic property, hardness low （ relatively soft ）, transparent property good. BS material specific gravity is 1.01fcm3（ and water versus 似）. material easy color, flow property good, easy molding processing. 2 BS process features BS processing temperature degree scope/range generally in 190-225℃ is 宜, mold temperature in 30-50℃ relatively good. material processing front drying, its flow property relatively good, injection pressure and injection speed degree can low. PMMA1 PMMA property can PMMA is type polymer, has machine 玻璃. transparent degree good, heat resistant property relatively good （ heat deflection temperature (HDT) is 98℃）, its product machine strong/high degree in and other, surface hardness low, easy by hard material 划伤而留 lower 痕迹, and PS versus ratio, easy 脆裂, specific gravity is 1.18g/cm3. 2 PMMA process features PMMA processing requirements relatively 严格, it for water and temperature degree very 敏感, processing front need separation drying, its melt viscosity relatively large, in relatively high （225-245℃） and pressure lower molding, mold temperature in 65-80℃ relatively good. PMMA stability property good, high temperature or in relatively high temperature degree lower time long 都会造 formed degradation. screw speed large （60% left right can ）, relatively thick PMMA made parts inner easy 出现“空洞”, 需采取 large gate, “ low material temperature, high mold temperature, slow speed ” injection method processing. PE1 PE property can PE is plastics in output/production volume most large types plastics, features is soft, 无毒, 价廉, processing 方便. PE is types type crystallization type high poly material. it types type more, commonly used has LDPE and HDPE, is semi transparent property plastics, strong/high degree low, specific gravity is 0.94g/cm3(ratio water small). LDPE relatively soft, （俗称 soft 胶）HDPE俗称 hard property soft 胶, it ratio LDPE hard, light property 差, crystallization degree large. PE chemical resistance good, easy 腐蚀, printing difficult. 2 PE process features PE made parts most significantly features is molding shrinkage large, easy generate sink marks and deformation. PE material water property small, can use drying. PE processing temperature degree scope/range very wide, easy separation understanding （ separation understanding temperature degree is 320℃）, pressure large, made parts density high, shrinkage rate relatively small. PE flow property in and other, need control processing conditions, maintain mold temperature 恒定（40-60℃）. PE crystallization degree and molding process conditions has 关, it has relatively high cold solid temperature degree, mold temperature low, crystallization degree low. in crystallization process, shrinkage toward property, formed internal force in, PE made parts easy deformation and cracking. product in 80℃ hot water in water 浴, can make pressure to 一定 松驰. molding process in, material temperature and mold temperature high is 宜, injection pressure in ensure made parts quality front lower amount low, injection molding parts mold cooling especially requirements speed uniform, product demolding relatively 烫. PP1 PP property can PP is crystallization type high poly material, commonly used plastics in PP most light, density is 0.91g/cm3（ ratio water small ）. general purpose plastics in, PP heat resistant property most good, its heat deflection temperature (HDT) is 80-100℃, can in water in 煮. PP has good resistant force cracking property, has very high bending fatigue lifespan, 俗称“百折胶”. PP comprehensive property can excellent 于PE material. PP product light, tough property good, chemical resistance good. PP disadvantages: dimensions degree low, rigid property 不足, weather resistance 差, easy generate “ copper 害”, it tool has rear shrinkage phenomenon, demolding rear, easy aging, 变脆, easy deformation. 2 PP process features PP in melt temperature degree lower has relatively good flow property, molding property can good, PP in processing upper has features: its 一: PP melt viscosity 随剪切 speed degree improve/increase has obvious decline （受 temperature degree effect/influence relatively small ）; its 二: separation orientation degree high 而呈现 relatively large shrinkage rate. PP processing temperature degree in 200-300℃ left right relatively good, it has good heat stabilized property （ separation understanding temperature degree is 310℃）, high temperature lower （270-300℃）, long time in in has degradation can can. 因PP viscosity 随 剪切 speed degree improve/increase has obvious reduce, therefore improve/increase injection pressure and injection speed degree improve/increase its flow property, improvement shrinkage deformation and 凹陷. mold temperature control in 30-50℃ scope/range inner. PP melt can very narrow injection molding parts mold 缝隙而出现披锋. PP in process in, need absorption a large amount of understanding hot （ ratio hot relatively large ）, product rear comparison 烫. PP material processing 时不需 drying, PP shrinkage rate and crystallization degree ratio PE low. PA1 PA property can PA也 is crystallization type plastics, product types very more, used for injection molding parts processing commonly used nylon 6, nylon 66, nylon 1010, nylon 6 10 and other. nylon tool has tough property, wear resistance and lubricated property, its advantages main/primary has machine machine strong/high degree high, tough property good, resistant fatigue, surface light slip, friction coefficient small, wear resistant, heat resistant （100℃ inner can long use ）, corrosion resistant, made parts weight light, easy color, easy molding. PA disadvantages main/primary has: easy water, injection molding parts technology requirements relatively 严, dimensional stability relatively 差, its ratio hot large, product relatively 烫. PA66 is PA series in machine strong/high degree most high, application most product types. its crystallization degree high, its rigid property, hardness, heat resistant property high. PA1010 is 我国1958 year 首创, semi transparent, specific gravity small, elastic property and flexible relatively large, water property ratio PA66 low, dimensional stability can 靠. 2 PA process features PA easy wet, processing front need separation drying, water amount control in 0.3% below/following. raw materials drying good, products gloss high, comparison coarse 糙, PA不会随受 hot temperature degree rise high 而逐渐 soft 化, is in 一 靠近 melting point relatively narrow temperature degree scope/range inner soft 化, melting point very obvious, temperature degree 一旦达 to 就会出现 flow （ and PS, PE, PP and other material different ）. PA viscosity ratio its it thermoplastic property plastics low, its temperature degree scope/range relatively narrow （仅5℃ left right ）. PA flow property good, easy molding, easy 走披锋. nozzle easy 出现“流涎” phenomenon, 抽胶需 large 一点. PA melting point high, solid high, material in injection molding parts mold inner 随时会因 temperature degree drop to melting point below/following solid, 妨碍充模 molding formed. therefore, must using/adopting high speed injection, （ thin or long process/workflow made parts especially this 样）. nylon injection molding parts mold need has relatively separation gas measures. PA in melt 状态时, heat stabilized property relatively 差, easy degradation. material temperature degree ultra- 300℃, material in material inner add hot time ultra- 30 separation 钏, PA for mold temperature requirements relatively high, can utilizing mold temperature high low control its crystallization property, obtain property can. PA material mold temperature in 50-90℃ relatively good, PA1010 processing temperature degree in 220-240℃ is 宜, PA66 processing temperature degree is 270-290℃. PA products has according to quality requirements 进行“退火处理” or “调 wet 处理”. POM1 POM property can POM is crystallization type plastics, it property very good, 俗称“赛钢”. it has fatigue resistance, creep resistance, wear resistance, heat resistant property and other excellent property can. POM不 easy wet, specific gravity is 1.42g/cm3, shrinkage rate 2.1%（ relatively large ）, dimensions difficult control, heat deflection temperature (HDT) is 172℃. 2 POM process features POM processing front can use drying, most good in processing process in preheating （100℃ left right ）, for product dimensions stability property has benefits. POM processing temperature degree scope/range very narrow （195-215℃）, in inner time long or temperature degree ultra- 220℃就会 separation understanding. screw speed can high, amount need less. POM product shrinkage large, easy generate sink marks or deformation. POM ratio hot large, mold temperature high （80-100℃）, product demolding rear very 烫, anti 止烫伤手指. POM宜 in in pressure, in speed, high mold temperature conditions lower molding processing. PC1 PC property can PC is type plastics, transparent property good. it tool has excellent comprehensive property can, machine strong/high degree high, tough property good, heat resistant weather resistance good, dimensional stability high, easy color, water absorption low. PC heat deflection temperature (HDT) is 135-143℃, can long in 120-130℃ 工 as temperature degree lower use. PC disadvantages is: chemical resistance new 式, melt viscosity large, flow property 差, for water 份极敏感, easy generate internal stress cracking phenomenon. 2 PC process features PC material for temperature degree relatively 敏感, its melt viscosity temperature degree improve/increase obvious reduce, flow add fast, for pressure 不敏感, need improve/increase its flow property, need rise temperature method. PC material processing front need separation drying （120℃ left right ）, water separation control in 0.02%以 inner. PC material using/adopting high material temperature, high mold temperature and high pressure slow speed conditions lower molding. mold temperature control in 80-110℃ left right relatively good, molding temperature degree in 280-320℃ is 宜. PC product surface easy gas 花, water easy generate gas marks, internal 残留应 force relatively large, easy cracking. therefore, PC material molding processing requirements relatively high. PC material shrinkage rate low （0.5%）, dimensions 变化不. PC material products can use methods remove its internal stress. EVA1 EVA property can EVA is type plastics, 无毒, specific gravity is 0.95g/cm3（ ratio water light ）, its products surface gloss property 差, elastic property good, relatively light, machine strong/high degree low, flow property good, easy processing molding. shrinkage rate relatively large （2%）, EVA can used for masterbatch material 载体. 2 EVA process features EVA molding processing temperature degree low （160-200℃）, scope/range relatively wide, its mold temperature low （20-45℃）, material in processing front need drying （ drying temperature degree 65℃）. EVA processing mold temperature, material temperature easy high, surface comparison coarse 糙（不 light slip ）. EVA product easy viscous front 模, water runner cold material need formed 拉扣式 relatively good. temperature degree ultra- 250℃ easy separation understanding. EVA宜 using/adopting “ low temperature, in pressure, in speed ” process conditions processing product. PVC 1 PVC property can PVC is type plastics, heat stabilized property 差, easy hot separation understanding. PVC flame resistant 烧（ flame retardant property good ）, viscosity high, flow property 差. PVC types type very more, separation is soft 质, semi hard and hard 质PVC, density is 1.1-1.3g/cm3(ratio water heavy), shrinkage rate large （1.5-2.5%）, PVC product surface gloss property 差, （ USA most research 出一处 transparent hard 质PVC can and PC媲美）. 2 PVC process features relatively PVC processing temperature degree scope/range narrow （160-185℃）, processing relatively difficult, process requirements high, processing generally lower can use drying （若需 drying, in 60-70℃ lower 进行）. mold temperature relatively low （20-40℃）. PVC processing easy generate gas marks, and other, need control good processing temperature degree. screw speed low （50% below/following ）, amount need less, back pressure can high. injection molding parts mold gas need good. PVC material in high temperature in time can ultra- 15 separation 钟. relatively PVC宜 use large water product 进胶, using/adopting “ in pressure, slow speed, low temperature ” conditions molding processing relatively good. relatively PVC product easy viscous front 模, mold opening speed degree （第一段）不宜 fast, water in runner cold material 穴处做 formed 拉扣式 relatively good, 啤PVC material machine front and use PS water material （ or PE material ）清洗炮筒, anti 止PVC separation understanding generate Hd↑,腐蚀 screw, inner 壁. PPO1 PPO property can PPO（NORLY） is types comprehensive property can engineering plastics, hardness di PA, POM, PC high, machine strong/high degree high, rigid property good, heat resistant property good （ heat deflection temperature (HDT) is 126℃）, dimensional stability high （ sink marks rate is 0.6%）, water absorption low （ small 于0.1%）. disadvantages is for outer unstable, price high, use amount less. 2 PPO process features PPO melt viscosity high, flow property 差, processing conditions high. processing front, in 100-120℃ temperature degree lower drying 1-2 small 时, molding temperature degree is 270-320℃, mold temperature control in 75-95℃ is 宜, in “ high temperature, high pressure, high speed ” conditions lower molding processing. plastics production process in water front easy generate 喷射流纹（蛇纹）, water runner relatively large is 佳.