Shanghai Daoqin Plastics Co., Ltd.

PA modified material due to PA strong/high property features, wet property strong/high, dimensional stability 差, can through modified improvement.

    • glass fiber reinforcement PA

    in PA add 入30% glass fiber, PA force property can, dimensional stability, heat resistant property, resistant aging property can has obvious improve/increase, resistant fatigue strong/high degree is reinforcement 2.5 倍. glass fiber reinforcement PA molding process and reinforcement large same, flow relatively reinforcement front 差, therefore injection pressure and injection speed degree need improve/increase, machine temperature degree improve/increase 10-40℃. due to glass fiber (GF) in injection molding process in flow direction orientation, force property can and shrinkage rate in orientation direction upper reinforcement, products deformation warpage, therefore, mold design 时, gate 位置, need combined 理, process upper can improve/increase mold temperature degree, products rear hot water in let its slow cooling. another, add glass fiber (GF) ratio/proportion large, its for injection molding machine 塑化元 parts abrasion loss large, most good is using/adopting di metal screw, machine 筒.

    • flame retardant PA

    due to in PA in add flame retardant, large separation flame retardant in high temperature lower easy separation understanding, 释放出 acid property material 质, for metal tool has function, therefore, 塑化元 parts （ screw, 胶头, 胶圈, gasket, method and other ）需镀 hard 鉻处理. process 方面, amount control machine temperature degree can high, injection speed degree can fast, 以避免因胶 material temperature degree high separation understanding products color and force property can decline.

    • transparent PA

    tool has good tensile strength, resistant impact strong/high degree, rigid property, wear resistance, chemical resistance, surface hardness and other property can, light transmittance high, and optical versus 近, processing temperature degree is 300--315 ℃, molding processing 时, 需严格 control machine temperature degree, melt temperature degree high degradation 而导致 products color, temperature degree low 会因塑化 defect effect/influence products transparent degree. mold temperature degree amount low, mold temperature degree high crystallization make products transparent degree reduce.

    • weather resistant PA in PA in add carbon and other absorption outer additives, this for PA lubricated property and for metal abrasion loss large large reinforcement, molding processing effect/influence lower material and abrasion loss machine parts. therefore, need using/adopting material can force strong/high and wear resistance high screw, machine 筒, 胶头, 胶圈, gasket combined.