Shanghai Daoqin Plastics Co., Ltd.

1, PS is type plastics, melt temperature degree scope/range relatively wide, heat stabilized property relatively good;

2, heat deflection temperature (HDT) is 70～100℃, viscous temperature degree is 150～204℃, 300℃ above separation understanding;

3, PS melt viscosity for temperature degree property and for speed rate property in, flow property good, easy molding;

4, PS resin water absorption very low, generally is 0.01～0.03%, molding front can drying, [necessary 时, can in 70～80℃ 循 ring hot in drying 2～3h].

5, injection molding material temperature degree control in 180～215℃ scope/range inner, nozzle temperature degree ratio material most high temperature degree low 10～20℃.

6, injection pressure generally control in 60～150MPa. large gate, simple and thick products, injection pressure can low, 约60～80MPa.

7, easy formed internal stress 并引起 cracking, residual stress issues relatively is 突出. is decrease small internal stress, processing 时往往 need relatively high material temperature, mold temperature, make melt slow cooling, orientation separation to 松弛. can selection flow property high product grade, or add flow property additives;