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研究了马来酸酐接枝的聚乙烯辛烯弹性体 /半结晶性塑料共混物 (TPEg)对热塑性共聚聚酯(PETG) /聚乙烯辛烯弹性体 (TPE)共混体系增容增韧作用的影响 .马来酸酐接枝物显著地改善了PETG与TPE之间的相容性 ,导致TPE分散相颗粒细化 ,并促使分散相颗粒面间距等于甚至小于实现脆韧转变所需的临界面间距 .在固定PETG基体含量为 85wt %的前提下 ,当TPEg在 15 %分散相中的含量由 2 0 %增加到30 %时 ,即TPEg在共混体系中的含量由 3 %增加到 4 5 %时 ,共混体系出现了由脆性到韧性的转变 ,冲击强度急剧升高
The effects of maleic anhydride grafted polyethylene octene elastomer / semi-crystalline plastic blend (TPEg) on compatibilization and toughening of PETG / TPE blends Effect of the maleic anhydride grafted significantly improve the compatibility between PETG and TPE, resulting in TPE dispersed phase grain refinement, and to promote the disperse phase grain surface spacing equal to or even less than the required to achieve brittle-to-tough transition Interfacial distance.When the content of TPEg in 15% dispersed phase was increased from 20% to 30%, the content of TPEg in the blended system increased from 3% to 4 At 5%, the brittleness to toughness of the blends was observed and the impact strength increased sharply