Shanghai Daoqin Plastics Co., Ltd.

1, PC polycarbonate (PC)
typical applications scope/range electrical and equipment (计算 machine parts, connectors and other), device tool (food processing machine, electrical 冰箱抽屉 and other),交通运输 industry (车辆 front rear 灯, table/sheet sheet/plate and other)
injection molding process conditions drying PC材 material tool has wet property, processing front drying very important.建议 drying conditions is 100C to 200℃,3-4 small 时. processing front wet degree must small 于0.02%.
熔化 temperature degree 260-340℃
mold temperature degree 70-120℃
injection pressure can can application high injection pressure
injection speed degree for/regarding relatively small gate application low speed injection, for its it type type gate application high speed injection
chemical and material features PC is types non engineering material, tool has especially good impact resistant strong/high degree, heat stabilized property, gloss degree, made fine features, flame retardant features and resistant property.PC 缺口伊估德 impact strong/high degree (otched Izod impact stregth) non high, and shrink small rate very low, generally is 0.1%-0.2%.PC has very good machine features,但 flow features relatively 差, therefore this type of material injection molding process relatively difficult. in selection types quality PC材 material 时, need product most rear is 基准. if parts requirements has relatively high impact resistant property, that application low flow rate PC材 material;反之, can application high flow rate PC材 material, this can optimization injection molding process.

2, PC/ABS polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) copolymer mixed combined material
typical applications scope/range machine and machine housing/shell 体, electrical appliances equipment, and machine, automotive parts (仪 table/sheet sheet/plate, internal 装修以 and cover/cap)
injection molding process conditions drying processing front drying is must. wet degree small 于0.04%,建议 drying conditions is 90-110℃,2-4 small 时
熔化 temperature degree 230-300℃
mold temperature degree 50-100℃
injection pressure 取决于塑 parts
injection speed degree can can high
chemical and material features PC/ABS tool has PC and ABS两者 comprehensive features.例如ABS easy processing features and PC excellent machine features and heat stabilized property.二者 ratio rate will and PC/ABS材 material heat stabilized property.PC/ABS this type of mixed combined material also excellent flow features.

3, HDPE high density polyethylene (PE)
typical applications scope/range electrical container, container, use tool, cover/cap and other
injection molding process conditions drying if 存储恰当则无 must drying
熔化 temperature degree 220-260℃. for/regarding separation relatively large material,建议熔化 temperature degree scope/range in 200-250℃ between
mold temperature degree 50-95℃.6mm below/following thick parts application relatively high mold temperature degree,6mm above thick parts application relatively low mold temperature degree.塑 parts cooling temperature degree uniform decrease small shrink small rate 差异. for/regarding most excellent processing cycle time, cooling 腔道直径应不 small 于8mm, and mold outer table/sheet 距离应 in 1.3d之 inner (此处"d" is cooling 腔道 直径)
injection pressure 700-1050bar
injection speed degree application high speed injection
runner and gate runner in 4 to 7.5mm between, runner long degree can can short. can application various type type gate, gate long degree need ultra- 0.75mm. especially suitable for application hot runner mold
chemical and material features PE-HD high crystallization degree it high density, resistant force strong/high degree, high temperature temperature degree, viscous property and chemical stability property.PE-HD ratio PE-LD has more strong/high resistant property.PE-HD impact resistant strong/high degree relatively low.PH-HD features main/primary density and molecular weight distribution made. suitable for injection molding PE-HD molecular weight distribution very narrow. for/regarding density is 0.91-0.925g/cm3,我们称之 is type type PE-HD; for/regarding density is 0.926-0.94g/cm3,称之 is type type PE-HD; for/regarding density is 0.94-0.965g/cm3,称之 is type type PE-HD.该材 material flow features very good,MFR is 0.1 to 28 between. molecular weight high,PH-LD flow features 越差,但 is has more good impact resistant strong/high degree.PE-LD is semi crystallization material, molding rear shrink small rate relatively high, in 1.5% to 4% between.PE-HD very easy ring force cracking phenomenon. can through application very low flow features material decrease small internal force, from decrease light cracking phenomenon.PE-HD当 temperature degree high 于60C时 very easy in type solvent agent in solvent 化,但 its resistant solvent property ratio PE-LD also need good 一.
 

4, PC/PBT polycarbonate (PC) and polybutylene terephthalate (PBT) mixed combined material
typical applications scope/range gears 箱, automotive 保险杠以 and requirements tool has resistant chemical reaction and corrosion resistant property, heat stabilized property, impact resistant property and stability property product
injection molding process conditions drying 处理 建议110-135℃,约4 small drying 处理
熔化 temperature degree 235-300℃
mold temperature degree 37-93℃
chemical and material features PC/PBT tool has PC and PBT二者 comprehensive features,例如PC high toughness and stability property and PBT chemical stability property, heat stabilized property and lubricated features and other
 

5, LDPE low density polyethylene (PE)
typical applications scope/range 碗,箱柜, pipeline device
injection molding process conditions drying generally necessary
熔化 temperature degree 180-280℃
mold temperature degree 20-40℃, is achieve cooling uniform and relatively is hot,建议 cooling 腔道直径至 less is 8mm, and from cooling to mold outer table/sheet 距离不 need ultra- cooling 腔道直径 1.5倍.
injection pressure most large can to 1500bar holding pressure pressure most large can to 750bar injection speed degree application fast speed injection speed degree
runner and gate can application various type type runner and gate.PE-LD especially combined application hot runner mold.

6, in 文名: polystyrene (PS) 英文名:Polystyrene features:
1. ethylene type, generally material.
2. flow property 佳, formed property 佳, formed can rate 佳.
3.容 easy 钵裂, resistant impact （GPPS）.
4.容 easy waste 边.
5.无 color transparent, easy color, insulation property 佳.
6. resistant water property, resistant product property 佳.