When the content of the COPA is 4%, the blends have the maximum izod impact strength and the tensile strength is nearly unchanged, POM/COPA blends have better mechanical properties.

• 当COPA含量为4%25时,共混物缺口冲击强度达到最大值,拉伸强度几乎不变,POM/COPA具有较理想的综合力学性能。