Shanghai Daoqin Plastics Co., Ltd.

is what glass fiber reinforced PBT injection molding process easy generate relatively more 模垢? how to improvement?

causes:

模垢 generate is material small separation content high or material heat stabilized property relatively 差引起. PBT due to its poly material and small separation 子残留 rate usually in 1%～3%, versus for and other material easy generate 模垢. in glass fiber (GF) rear, more add obvious. this will in processing process in, need 定时清理 mold, formed production efficiency low lower.

solution methods:

1, decrease/reduce small separation additives add amount （如 lubricant, coupling agent and other ）, amount selection polymer/macromolecule additives;

2, improvement PBT heat stabilized property, decrease/reduce processing process in thermal degradation generate small separation material.