单一土工膜与复合土工膜两者之间有什么区别？

土(tu)工膜(mo)可(ke)(ke)分为单(dan)一(yi)土(tu)工膜(mo)和复(fu)合土(tu)工膜(mo)。单(dan)一(yi)土(tu)工膜(mo)可(ke)(ke)分为单(dan)层膜(mo)和由多层不同树(shu)脂组成的膜(mo)。单(dan)膜(mo)具有(you)良好的延展性，但抗拉性低，易断裂(lie)，与尖锐(rui)物体接触(chu)时易穿(chuan)刺。同时，表面(mian)不粗糙，摩擦(ca)系数低，容易导致膜(mo)两侧几何滑动。单(dan)一(yi)土(tu)工膜(mo)有(you)许多缺陷，可(ke)(ke)以添(tian)加其(qi)他材料来弥补其(qi)不足，从而产生一(yi)种新材料，称(cheng)为复(fu)合土(tu)工膜(mo)。

复合(he)(he)(he)(he)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)(mo)是指在薄膜(mo)(mo)的(de)(de)一(yi)(yi)侧或两侧粘贴(tie)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)，通(tong)(tong)过一(yi)(yi)定的(de)(de)工(gong)(gong)(gong)艺与土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)(mo)结合(he)(he)(he)(he)而(er)成(cheng)(cheng)的(de)(de)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)(mo)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)组合(he)(he)(he)(he)物。根据其形式，可分为一(yi)(yi)布(bu)一(yi)(yi)膜(mo)(mo)和两布(bu)一(yi)(yi)膜(mo)(mo)。复合(he)(he)(he)(he)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)(mo)是通(tong)(tong)过聚(ju)乙烯或聚(ju)氯乙烯进(jin)行增强和改性(xing)，通(tong)(tong)过压延(yan)机进(jin)行一(yi)(yi)系列加工(gong)(gong)(gong)，然(ran)后通(tong)(tong)过热粘聚(ju)酯针与土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)结合(he)(he)(he)(he)而(er)成(cheng)(cheng)。它结合(he)(he)(he)(he)了土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)和单一(yi)(yi)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)(mo)的(de)(de)优点(dian)，具有优异的(de)(de)抗拉和抗顶破性(xing)能、防渗指数、变形模量(liang)、延(yan)展性(xing)等物理指标(biao)高、重量(liang)轻、生产成(cheng)(cheng)本低等优点(dian)。

在工(gong)(gong)程中(zhong)，与其他防渗材料相比，其性能(neng)非(fei)常优越。因(yin)此，复合土(tu)工(gong)(gong)膜(mo)(mo)(mo)在工(gong)(gong)程中(zhong)得到了(le)广泛的应(ying)用。土(tu)工(gong)(gong)膜(mo)(mo)(mo)可(ke)分为(wei)光滑土(tu)工(gong)(gong)膜(mo)(mo)(mo)和粗糙(cao)土(tu)工(gong)(gong)膜(mo)(mo)(mo)，因(yin)为(wei)其表面形状不同(tong)。薄膜(mo)(mo)(mo)两侧摩(mo)擦(ca)(ca)系数小的土(tu)工(gong)(gong)膜(mo)(mo)(mo)称(cheng)为(wei)光滑土(tu)工(gong)(gong)膜(mo)(mo)(mo)；薄膜(mo)(mo)(mo)两侧或一侧表面有(you)一排排凸起。采用一定工(gong)(gong)艺制作(zuo)的摩(mo)擦(ca)(ca)系数大的土(tu)工(gong)(gong)膜(mo)(mo)(mo)称(cheng)为(wei)粗糙(cao)土(tu)工(gong)(gong)膜(mo)(mo)(mo)。

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