一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具有高溫低溫的(de)區別，這主要(yao)是(shi)以熔點為依據來劃分的(de)。下(xia)面來介紹(shao)下(xia)熱熔膠(jiao)膜高溫與低溫的(de)區別。

1、高溫熱熔膠膜類型

高(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)主要(yao)是指(zhi)熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)(wen)(wen)度(du)比較高(gao)(gao)的熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)，其(qi)實高(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)類型熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)只有高(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)，熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)(wen)(wen)度(du)在(zai)150℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)(wen)度(du)在(zai)180℃左(zuo)右。還有一些中(zhong)高(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)類型熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)，主要(yao)包(bao)括PA熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)120℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)(wen)度(du)150℃）、PES熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)(wen)(wen)度(du)115℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)(wen)度(du)140℃）和PO熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)在(zai)110℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)(wen)度(du)140℃左(zuo)右）以及中(zhong)溫(wen)(wen)(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠膜(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)在(zai)110℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)(wen)度(du)在(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)(di)溫(wen)(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜指的(de)(de)(de)(de)是熔(rong)(rong)點溫(wen)(wen)(wen)(wen)(wen)度低(di)(di)的(de)(de)(de)(de)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜，除了中高溫(wen)(wen)(wen)(wen)(wen)和高溫(wen)(wen)(wen)(wen)(wen)類(lei)型(xing)(xing)(xing)的(de)(de)(de)(de)，其(qi)他(ta)材質的(de)(de)(de)(de)都(dou)屬(shu)于低(di)(di)溫(wen)(wen)(wen)(wen)(wen)類(lei)型(xing)(xing)(xing)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜，主要(yao)包(bao)括低(di)(di)溫(wen)(wen)(wen)(wen)(wen)TPU熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜和EVA熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜。其(qi)中低(di)(di)溫(wen)(wen)(wen)(wen)(wen)TPU熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜的(de)(de)(de)(de)熔(rong)(rong)點溫(wen)(wen)(wen)(wen)(wen)度在(zai)70℃，有的(de)(de)(de)(de)型(xing)(xing)(xing)號可(ke)低(di)(di)至(zhi)五(wu)六十度；而EVA的(de)(de)(de)(de)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜熔(rong)(rong)點主要(yao)是在(zai)70攝氏(shi)度，低(di)(di)的(de)(de)(de)(de)型(xing)(xing)(xing)號可(ke)以達(da)到四五(wu)十度，具有良好的(de)(de)(de)(de)耐低(di)(di)溫(wen)(wen)(wen)(wen)(wen)性能。

3、高溫與低溫熱熔膠膜的區別

兩者最大的區別就是(shi)熔(rong)點不(bu)(bu)(bu)同，除了(le)熔(rong)點的不(bu)(bu)(bu)同之外，在(zai)性能和使(shi)用(yong)(yong)范(fan)圍(wei)上也有所(suo)不(bu)(bu)(bu)同。低溫(wen)(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)主要(yao)是(shi)用(yong)(yong)在(zai)一些不(bu)(bu)(bu)耐高溫(wen)(wen)材質的材料復合中，而高溫(wen)(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)主要(yao)應用(yong)(yong)在(zai)有耐高溫(wen)(wen)要(yao)求的領(ling)域。整體(ti)來說(shuo)的話，高溫(wen)(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)的粘接性能會更好一點，但(dan)是(shi)低溫(wen)(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)可以更好地(di)保(bao)護材料不(bu)(bu)(bu)受到熱(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜的(de)(de)特點是(shi)需要加熱(re)(re)(re)熔(rong)(rong)(rong)化才具(ju)有黏性(xing)，冷(leng)卻(que)硬化后才具(ju)有粘(zhan)接強度(du)。高溫熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜顧名思義，就是(shi)需要加熱(re)(re)(re)的(de)(de)溫度(du)高，相反，低溫熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜也就是(shi)在低溫條(tiao)件下(xia)就可以加熱(re)(re)(re)熔(rong)(rong)(rong)化了。

因為熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)達到一定溫(wen)(wen)(wen)(wen)(wen)度(du)后就(jiu)會熔(rong)(rong)化(hua)，熔(rong)(rong)化(hua)后，即使前期(qi)已經形成良好的(de)(de)粘接，也(ye)會再一次失去粘接強度(du)。所(suo)(suo)以，熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)的(de)(de)熔(rong)(rong)化(hua)溫(wen)(wen)(wen)(wen)(wen)度(du)，也(ye)就(jiu)是接近(jin)它的(de)(de)一個(ge)耐溫(wen)(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)(wen)度(du)。超過(guo)這(zhe)個(ge)耐溫(wen)(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)(wen)度(du)，熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)就(jiu)會失去粘接。所(suo)(suo)以，通(tong)常情(qing)況(kuang)下(xia)，高溫(wen)(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)的(de)(de)耐溫(wen)(wen)(wen)(wen)(wen)性能也(ye)是比較高的(de)(de)，相反，低溫(wen)(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)它的(de)(de)耐高溫(wen)(wen)(wen)(wen)(wen)性能比較差。

值(zhi)得(de)一(yi)提的(de)(de)(de)是，熔(rong)化(hua)溫度(du)和實(shi)際的(de)(de)(de)熱(re)熔(rong)膠(jiao)膜使用(yong)(yong)溫度(du)是不(bu)一(yi)樣的(de)(de)(de)。熱(re)熔(rong)膠(jiao)膜的(de)(de)(de)實(shi)際使用(yong)(yong)溫度(du)通常會比熔(rong)化(hua)溫度(du)高(gao)幾(ji)十(shi)度(du)。具體高(gao)多少還(huan)需要看熱(re)熔(rong)膠(jiao)膜本身的(de)(de)(de)熔(rong)指等其它特性(xing)，為的(de)(de)(de)是使得(de)熱(re)熔(rong)膠(jiao)膜在更短的(de)(de)(de)時間內可以熔(rong)化(hua)。

通過上面的(de)(de)(de)說明(ming)，我們似乎感覺到(dao)高(gao)(gao)溫熱(re)熔膠膜(mo)(mo)(mo)具有更好(hao)的(de)(de)(de)性(xing)能優勢(shi)，能復(fu)(fu)合(he)要求更高(gao)(gao)的(de)(de)(de)場合(he)，但實際上并不是(shi)這樣。選擇高(gao)(gao)溫熱(re)熔膠膜(mo)(mo)(mo)還是(shi)低(di)(di)溫熱(re)熔膠膜(mo)(mo)(mo)是(shi)由復(fu)(fu)合(he)的(de)(de)(de)材料類(lei)型決定的(de)(de)(de)。俗話說，存在即合(he)理！高(gao)(gao)溫熱(re)熔膠膜(mo)(mo)(mo)、低(di)(di)溫熱(re)熔膠膜(mo)(mo)(mo)本就是(shi)為了滿足不同材料的(de)(de)(de)復(fu)(fu)合(he)要求而比研發推出的(de)(de)(de)，不能單獨討(tao)論是(shi)高(gao)(gao)溫熱(re)熔膠膜(mo)(mo)(mo)好(hao)，還是(shi)低(di)(di)溫熱(re)熔膠膜(mo)(mo)(mo)更好(hao)。判定哪(na)一(yi)種類(lei)型的(de)(de)(de)熱(re)熔膠膜(mo)(mo)(mo)更好(hao)或者更合(he)適，需要根據具體的(de)(de)(de)復(fu)(fu)合(he)要求來測評(ping)、判斷。

在我們的材料粘接應用上，并不是所有場合都需要對熱熔膠膜提出耐高溫的要求，往往低溫的熱熔膠膜就可(ke)以(yi)符合性(xing)能需求。并且，使用低溫(wen)熱熔膠(jiao)膜可(ke)以(yi)大大降低能耗，在性(xing)能達到要求的基礎上，盡量做到節能環保的，這才是我們所追(zhui)求的。