Shanghai Daoqin Plastics Co., Ltd.

英文名称:Polyethylene（简称PE） specific gravity:0.94-0.96克/立方 cm molding shrinkage:1.5-3.6% molding temperature degree: 140-220℃

features: corrosion resistant property, electrical insulation property (especially high frequency insulation property) excellent 良, can chlorine 化, chemical crosslinked, crosslinked modified, can use glass fiber reinforcement. low pressure polyethylene (PE) melting point, rigid property, hardness and strong/high degree relatively high,吸 water property small, has good electrical property can and resistant property; high pressure polyethylene (PE) soft/flexible property, elongation, impact strong/high degree and property relatively good; ultra-high molecular weight polyethylene (PE) impact strong/high degree high, resistant fatigue, wear resistant. low pressure polyethylene (PE) made as corrosion resistant parts and insulation parts; high pressure polyethylene (PE) made as film and other; ultra-high molecular weight polyethylene (PE) made as decrease 震, wear resistant and parts.

    molding features:

    1. crystallization material,吸 wet small,不 must separation drying, flow property good flow property for pressure 敏感, molding use high pressure injection, material temperature uniform, filling speed degree fast, holding pressure separation.不宜 use gate,以 anti shrinkage 不均, internal stress increase large. attention/notes selection gate 位置, anti generate shrink and deformation.

    2. shrinkage scope/range and shrinkage value large, direction property obvious, easy deformation warpage. cooling speed degree slow, mold cold material 穴,并 has cooling system.

    3. add hot time long,否则会发生 separation understanding.

    4. soft parts has relatively shallow 侧凹槽时, can strong/high demolding.

    5. can can melt 体破裂,不宜 and has machine solvent agent 接触,以 anti cracking.