聚丙烯为非极性的高聚物，只有经过特殊的表面处理使其变为极性表面，才能得到高的粘接强度。

Polypropylene is a non-polar high polymer. During the treatment, a polar surface layer is formed which gives rise to a higher adhesion strength.

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聚丙烯为非极性的高聚物，只有经过特殊的表面处理使其变为极性表面，才能得到高的粘接强度。

Polypropylene is a non-polar high polymer. During the treatment, a polar surface layer is formed which gives rise to a higher adhesion strength.

youdao