Shanghai Daoqin Plastics Co., Ltd.

         high water absorption not only large reduce PA6材 material force property can, electrical property can, but also heavy effect/influence made parts dimensional stability, PA6 modified reduce water absorption is important 课题之一.

PA6 separation structure 示意图

         currently, PA6 modified reduce water absorption methods has large type:

        1, add blending modified additives (如LLDP, PP, maleic anhydride grafted and other);

        2, add machine filler additives (如: carbon acid 钙, slip powder and other);

        3, surface treatment modified.

PA6 modified sheet/slice

        PA6 modified reduce water absorption principle or 者说 眼点 is what?

         large has below/following 三点:

        1, property function

         through add filler, and PA6 separation in easy water property amine 基, 端氨基 and 羧基基团 reaction, will its 屏蔽起, water absorption obvious decline.

        2, 晶区 屏蔽 function

        PA6 is semi crystallization material, water separation easy 进入极 property relatively large non 晶区, add filler and blending modified material has improve/increase PA6 modified material crystallization degree, not only force property can has improve/increase, water absorption 也会随之 relatively large degree decline.

        3, structure function

        PA6 modified material in, PA6材 material is versus, filler or surface treatment agent is dispersion versus, versus interface combined relatively strong/high, filler or blending material non property long has retardant PA6材 material and water separation 子 接触, water absorption obvious decline.