PA6/POE/POE-g-MAH分散相态与性能研究

Study on Morphology of Disperse Phase and Properties of PA6/POE/POE-g-MAH

研究了PA6/POE/POE-g-MAH分散相态与性能。结果表明:在不含POE-g-MAH的PA6/POE体系中,POE平均粒径为7.5μm,且大小分布很不均匀;掺入POE-g-MAH后,弹性体粒径迅速变小,加入10%的POE-g-MAH,其平均粒径为0.6μm。在POE/POE-g-MAH为30/70时,弹性体平均粒径为60nm;而只用POE-g-MAH时,其平均粒径只有50nm。分散相粒子越小,粒径分布越均匀。但粒径小于0.2μm时,对PA6增韧效果不佳。弹性体分散相粒径的大小与分布是影响共混物韧性的主要因素,但不影响共混物的屈服强度和模量。

The results showed that the average particle size of POE is 7.5μm, and its distribution is nonuniform, while under PA6/POE system without containing POE-g-MAH; when adding POE-g- MAH in, the particle size of elastomer becomes small rapidly, and its average particle size is 0.6μm with the addition of 10% POE-g-MAH. While POE/POE-g-MAH is 30/70, the average particle size of elastomer is 60nm; if POE-g-MAH is used alone, its average particle size becomes 50nm. The smaller the particle in disperse phase is, the more uniform it is distributed. While the particle size is less than 0.2μm, the toughening effect on PA6 is not good. The particle size and its distribution are the key effects on the toughness of blends, but they don＇t influence the blends on yield strength and modulus.