Polyamide composition and preparation method thereof

The invention discloses a polyamide composition and a preparation method thereof. The polyamide composition is prepared from the following components in percentage by weight: 70 to 90 percent of semi-crystalline polyamide, 4 to 20 percent of amido functionalized polyolefin elastomer, 4 to 20 percent of modified elastomer copolymer containing anhydride groups and 1 to 3 percent of optional additive. Through a twin-screw extrusion granulation process, the prepared polyamide composition has excellent high and low temperature toughness and hydrolysis resistance, and is suitable for hydrolysis-resistant pipelines, cables, structural members and the like. 本发明公开一种聚酰胺的组合物及其制备方法。一种聚酰胺组合物，包括以下组成：半结晶聚酰胺70~90wt%，胺基官能化的聚烯烃弹性体4~20wt%，含有酸酐基团改性的弹性体共聚物4~20wt%，任选的添加剂1~3wt%。通过双螺杆挤出造粒工艺，制备的聚酰胺组合物具有优异的高低温韧性以及耐水解性能，适用于耐水解管道、线缆以及结构件等。