摘要
随着分子链长度的增加,聚酰胺材料的性能会发生变化,如吸水率降低、密度变小、柔韧性更好、耐醇解性更高等。为了进一步提高长碳链尼龙的耐热氧老化和抗水解性,通过双螺杆熔融共混挤出改性的方法,制备了玻璃纤维质量分数为30%的耐老化抗水解玻璃纤维增强长碳链尼龙复合材料,研究了尼龙树脂链段长度、端氨基含量以及抗氧剂对尼龙耐热氧老化和抗水解的影响。结果表明,相比于常规受阻酚和芳香胺抗氧剂,添加铜盐的材料耐热氧老化和抗水解性能更好,同等添加量时无机铜盐要优于有机铜盐;与普通尼龙PA66材料相比,长碳链尼龙具有更高的抗水解性能,且尼龙链段越长抗水解性越好;端氨基含量高有助于提高尼龙树脂的耐热氧老化和抗水解性能。
The properties of polyamide materials will change with the increase of molecular chain length,such as water absorption reduced,density reduced,flexibility improved,and alcoholysis resistance improved.In order to further improve the thermal oxygen aging and hydrolysis resistance of long carbon chain nylon,aging and hydrolysis resistant glass fiber reinforced long carbon chain nylon composite with 30wt%glass fiber was prepared by twin screw melt blending extrusion modification.The effects of nylon resin segment length,terminal amino group content and antioxidants on the thermal oxygen aging and hydrolysis resistance of nylon were investigated.The results indicate that copper salts have better heat,oxygen aging resistance,and hydrolysis resistance compared with conventional hindered phenols and aromatic amine antioxidants,inorganic copper salts are better than organic copper salts at the same dosage;Compared with nylon PA66 materials,long carbon chain nylon has higher hydrolysis resistance,and the longer the nylon chain segment,the better the hydrolysis resistance;The high-end amino content helps to improve the thermal oxygen aging and hydrolysis resistance of nylon resin.
作者
王乐阳
马学彬
冀文广
李天津
张帅
付鹏
Wang Leyang;Ma Xuebin;Ji Wenguang;Li Tianjin;Zhang Shuai;Fu Peng(Shandong Xianglong New Materials Co.,Ltd.,Weifang 262605,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2023年第12期35-39,共5页
Engineering Plastics Application
关键词
长碳链尼龙
玻璃纤维
抗氧剂
耐热老化
抗水解
long carbon chain nylon
glass fiber
antioxidants
heat aging resistance
hydrolysis resistance
