一、什么是PE膜復合土工布

PE膜(mo)復(fu)(fu)合(he)土工(gong)布，簡稱(cheng)復(fu)(fu)合(he)土工(gong)布，是土工(gong)合(he)成材料(liao)大(da)家族(zu)中的一(yi)員(yuan)，是指將土工(gong)布與PE土工(gong)膜(mo)復(fu)(fu)合(he)而成的一(yi)種土工(gong)材料(liao)，又稱(cheng)復(fu)(fu)合(he)土工(gong)膜(mo)。

復合土工(gong)(gong)布(bu)的產(chan)品品種有很多(duo)(duo)，一般有一布(bu)一膜、兩布(bu)一膜、多(duo)(duo)布(bu)多(duo)(duo)膜等，之所以要用復合土工(gong)(gong)布(bu)，主要是因為普(pu)通的土工(gong)(gong)布(bu)透水(shui)(shui)不(bu)防(fang)水(shui)(shui)，在(zai)一些(xie)水(shui)(shui)利(li)工(gong)(gong)程領(ling)域，就需要用到防(fang)水(shui)(shui)性(xing)能好的復合土工(gong)(gong)布(bu)。

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二、土工布和復合土工布有啥區別

土(tu)(tu)(tu)(tu)工(gong)布(bu)和(he)(he)復合(he)(he)土(tu)(tu)(tu)(tu)工(gong)布(bu)都(dou)是土(tu)(tu)(tu)(tu)木工(gong)程中常用的(de)材(cai)料，因為(wei)(wei)土(tu)(tu)(tu)(tu)工(gong)布(bu)和(he)(he)復合(he)(he)土(tu)(tu)(tu)(tu)工(gong)布(bu)的(de)外觀比較(jiao)相似，因此導(dao)致(zhi)很(hen)多客(ke)戶在選(xuan)擇材(cai)料時分(fen)不清楚哪(na)種(zhong)是土(tu)(tu)(tu)(tu)工(gong)布(bu)，哪(na)種(zhong)是復合(he)(he)土(tu)(tu)(tu)(tu)工(gong)布(bu)，下(xia)面為(wei)(wei)大家介(jie)紹一下(xia)復合(he)(he)土(tu)(tu)(tu)(tu)工(gong)布(bu)和(he)(he)土(tu)(tu)(tu)(tu)工(gong)布(bu)的(de)區別：

1、生產工藝不同

土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)主要分(fen)為長絲(si)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)和短絲(si)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)，長絲(si)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)是由聚酯切片經(jing)過高溫(wen)熔融-噴(pen)絲(si)成(cheng)(cheng)網-針(zhen)刺(ci)而成(cheng)(cheng)。短絲(si)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)是由滌綸短纖維經(jing)過設備的雜亂-梳(shu)理(li)-成(cheng)(cheng)網-針(zhen)刺(ci)而成(cheng)(cheng)，因此(ci)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)屬于針(zhen)刺(ci)工(gong)(gong)(gong)(gong)藝(yi)。而復合(he)(he)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)則是由PE土(tu)工(gong)(gong)(gong)(gong)膜上(shang)下兩面或者(zhe)一面粘合(he)(he)土(tu)工(gong)(gong)(gong)(gong)布(bu)(bu)生產(chan)而成(cheng)(cheng)，屬于熱復合(he)(he)工(gong)(gong)(gong)(gong)藝(yi)。

2、產品功能作用不同

無論是長(chang)絲(si)土(tu)工(gong)(gong)布(bu)還是短絲(si)土(tu)工(gong)(gong)布(bu)在工(gong)(gong)程中都是主要起到(dao)(dao)過濾、反濾、加筋、保(bao)護的(de)作(zuo)用，土(tu)工(gong)(gong)布(bu)是透水不(bu)防(fang)(fang)水的(de)。而(er)復(fu)合土(tu)工(gong)(gong)布(bu)則在工(gong)(gong)程中起到(dao)(dao)防(fang)(fang)滲、防(fang)(fang)水、隔離的(de)作(zuo)用，復(fu)合土(tu)工(gong)(gong)布(bu)是防(fang)(fang)水防(fang)(fang)滲的(de)。

3、產品規格不同

土工布和復合土工布，其規格(ge)一(yi)般都是用克(ke)重表示的(de)，常(chang)見的(de)土(tu)工(gong)布(bu)的(de)產品(pin)規格(ge)主(zhu)(zhu)要為100g/㎡-800g/㎡，而復合土(tu)工(gong)布(bu)的(de)產品(pin)規格(ge)則(ze)主(zhu)(zhu)要為300g/㎡-3000g/㎡。

4、執行標準不同

長(chang)絲(si)土(tu)工(gong)布的國家執行標(biao)準(zhun)為GB/T17639-2008，短絲(si)土(tu)工(gong)布的執行標(biao)準(zhun)為GB/T17638-2008，而復合土(tu)工(gong)布的執行標(biao)準(zhun)則為GB/T17642-2008。