On the other hand , when using p ( an - mma - as ) as polymer matrix , the gradient distribution of copper in pmgcf is raisonne , the crystal is smaller and compacter than the former , the flexibility of pmgcf increase as the concentration of mma in copolymer increase , the size of copper crystal increase as as the concentration of ita in copolymer increase P ( an - mma - as )为基体时金属梯度分布较合理，金属晶体细小而且致密，而且所制的pmgcf柔韧性较好，随mma含量的增多而柔韧性增大，随其中的as的含量的增大，所得的金属晶体尺寸变化与p （ an ita ）相似，但变化的趋势较缓慢。
