ACR-g-MAH增韧PA1012的研究

Study on ACR-g-MAH Toughened PA1012 Resins

采用乳液聚合法合成一系列丙烯酸酯共聚物（ACR）接枝顺丁烯二酸酐共聚物（ACR—g—MAH），经熔融挤出、注塑制备尼龙1012（PA1012）／ACR—g—MAH共混物。利用傅立叶红外光谱仪、动态力学热分析仪和冲击实验仪等测试手段，研究壳相中MAH比例和ACR—g—MAH添加量对PA1012／ACR—g—MAH共混物性能的影响。结果表明，当MAH占壳相比例为3％，ACR—g—MAH增韧剂的添加量在15～20phr时，PA1012／ACR—g—MAH共混物的综合力学性能最优；随着壳相中MAH比例的增加，ACR壳相的玻璃化转变温度向高温区移动，核相tan8增大。

A series of acrylic copoiymer graft maleic anhydride copolymers （ACR-g-MAH） were prepared by emulsion polymerization, and the nylon 1012 （PA1012）/ACR-g-MAH blend was prepared by twin-screw extruder. The effect of the proportion of MAH among the shell phase and the ACR-g-MAH dosage on the properties of the PA1012/ACR-g-MAH blend was investigated by infrared spectrometer, impact experimental and dynamic mechanical thermal. The results show that the PA1012/ACR-g-MAH blend has the best comprehensive mechanical properties by the addition of 15 - 20 phr ACR-g-MAH and 3% MAH. With the increase of MAH proportion in the shell, the glass transition temperature of the shell phase becomes higher and the tang value of the core phase increases.