Shanghai Daoqin Plastics Co., Ltd.

PA66 plastics in polyamide (PA) material in has relatively high melting point. it is types semi 晶体-晶体材 material. PA66 in relatively high temperature degree can maintain relatively strong/high strong/high degree and rigid degree. PA66 plastics in molding rear still tool has wet property, its degree main/primary 取决于材 material formed, thick and ring conditions. in product design 时, need 考虑吸 wet property for stability property effect/influence.

is improve/increase PA66 machine features, add various modifier. 玻璃就 is most Common additives, has is high impact resistance property also add combined formed 橡胶.

PA66 plastics viscous property relatively low, therefore flow property very good （但不如PA6）. this property can use processing very thin parts. it viscosity for temperature degree very 敏感.

PA66 shrinkage rate in 1%~2% between, add glass fiber additives can will shrinkage rate reduce to 0.2%~1% . shrinkage rate in process/workflow direction and and process/workflow direction versus direction upper versus is relatively large.

PA66 plastics hot property melting point crystallization understanding temperature degree, for crystallization property polymer/macromolecule PA66 plastics, 显示清晰 melting point, according to using/adopting testing methods, melting point in 259~267℃ scope/range inner 波动. usually using/adopting hot analysis method 测出 PA66 plastics melting point is 264℃. if will 体积膨胀系数显示极 large value temperature degree as melting point, nylon -66 melting point temperature degree scope/range is 246~263℃. 接近理论熔 understanding temperature degree 259℃.

PA66 plastics injection molding features drying 处理: if processing front material is 密封, that 么就没 has necessary drying. however, if container by 打开, that 么建议 in 85C hot gas in drying 处理. if wet degree large 于0.2%, also need 进行105℃, 12 small true drying.

熔化 temperature degree: 260~290℃. for additives product is 275~280℃. temperature degree 应避免 high 于300℃.

mold temperature degree: 建议80℃. mold temperature degree will effect/influence crystallization degree, crystallization degree will effect/influence product material features. for/regarding

thin parts, if use low 于40℃ mold temperature degree, parts crystallization degree will time 而变化, is maintain

塑 parts stability property, need 进行退火处理.

injection pressure: usually in 750~1250bar, 取决于材 material and product design.

injection speed degree: high speed （ for/regarding reinforcement type material low 一 ）.

runner and gate: due to PA66 solid time very short, therefore gate non important. gate 孔径不 need small 于0.5*t（ this 里t is parts thick degree ）. if use hot runner, gate dimensions ratio use runner small 一, is hot runner can 够帮助 retardant material solid. if use 潜入式 gate, gate most small 直径应当 is 0.75mm.

PA66 plastics application PA66 is PA series in machine strong/high degree most high, application most product types, its crystallization degree high, its rigid property, heat resistant property relatively high . application 包括 high temperature electrical base/seat parts, electrical parts, gears, bearings, 滚子, elastic 簧支架, slip 轮, 螺栓, 叶轮, 风扇叶 sheet/slice, 螺旋桨, high pressure 封口垫 sheet/slice, base/seat, tube/pipe, container, 绳索, belt/tape, 传动皮 belt/tape, bonding agent, battery 箱, insulation electrical parts, 线芯, filament and other .