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(qu)(qu)別(bie)，這主(zhu)要是以熔點為依據來劃分的(de)。下(xia)面(mian)來介(jie)紹下(xia)熱熔膠膜(mo)高溫與低溫的(de)區(qu)(qu)別(bie)。

1、高溫熱熔膠膜類型

高(gao)(gao)溫(wen)(wen)(wen)熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)主(zhu)要(yao)是指熔(rong)(rong)(rong)點溫(wen)(wen)(wen)度(du)(du)(du)比(bi)較高(gao)(gao)的熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，其(qi)實高(gao)(gao)溫(wen)(wen)(wen)類型(xing)(xing)熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)只有高(gao)(gao)溫(wen)(wen)(wen)TPU熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，熔(rong)(rong)(rong)點溫(wen)(wen)(wen)度(du)(du)(du)在(zai)150℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)(du)(du)在(zai)180℃左(zuo)右。還有一些(xie)中高(gao)(gao)溫(wen)(wen)(wen)類型(xing)(xing)熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，主(zhu)要(yao)包括PA熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點120℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)(du)(du)150℃）、PES熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點溫(wen)(wen)(wen)度(du)(du)(du)115℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)(du)(du)140℃）和(he)PO熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點在(zai)110℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)(du)(du)140℃左(zuo)右）以及中溫(wen)(wen)(wen)TPU熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點在(zai)110℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)(du)(du)在(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)(di)(di)溫(wen)(wen)(wen)(wen)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)指的(de)是熔(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)(wen)度(du)低(di)(di)(di)的(de)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)，除(chu)了中(zhong)(zhong)高溫(wen)(wen)(wen)(wen)和高溫(wen)(wen)(wen)(wen)類型的(de)，其他材質(zhi)的(de)都屬于低(di)(di)(di)溫(wen)(wen)(wen)(wen)類型熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)，主要(yao)包(bao)括(kuo)低(di)(di)(di)溫(wen)(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)和EVA熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)。其中(zhong)(zhong)低(di)(di)(di)溫(wen)(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)的(de)熔(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)(wen)度(du)在(zai)70℃，有的(de)型號可(ke)低(di)(di)(di)至五(wu)六十度(du)；而EVA的(de)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)熔(rong)(rong)(rong)點(dian)主要(yao)是在(zai)70攝氏度(du)，低(di)(di)(di)的(de)型號可(ke)以達到四五(wu)十度(du)，具有良好的(de)耐低(di)(di)(di)溫(wen)(wen)(wen)(wen)性(xing)能。

3、高溫與低溫熱熔膠膜的區別

兩者最(zui)大的(de)(de)區別就(jiu)是(shi)熔(rong)點不同(tong)，除了熔(rong)點的(de)(de)不同(tong)之外，在(zai)性能和使用(yong)范(fan)圍上也有所不同(tong)。低溫熱(re)熔(rong)膠(jiao)膜(mo)主要是(shi)用(yong)在(zai)一(yi)些不耐高(gao)(gao)溫材質(zhi)的(de)(de)材料復(fu)合(he)中，而高(gao)(gao)溫熱(re)熔(rong)膠(jiao)膜(mo)主要應用(yong)在(zai)有耐高(gao)(gao)溫要求的(de)(de)領(ling)域(yu)。整體來說的(de)(de)話，高(gao)(gao)溫熱(re)熔(rong)膠(jiao)膜(mo)的(de)(de)粘(zhan)接性能會更好一(yi)點，但是(shi)低溫熱(re)熔(rong)膠(jiao)膜(mo)可以更好地保護(hu)材料不受到熱(re)損傷(shang)。

二、熱熔膠膜高溫好還是低溫好

熱(re)熔(rong)(rong)膠膜的特點是需要(yao)加熱(re)熔(rong)(rong)化(hua)(hua)才具有黏性，冷卻硬化(hua)(hua)后才具有粘接強度(du)。高溫熱(re)熔(rong)(rong)膠膜顧名思義，就是需要(yao)加熱(re)的溫度(du)高，相反，低溫熱(re)熔(rong)(rong)膠膜也就是在(zai)低溫條件下就可以加熱(re)熔(rong)(rong)化(hua)(hua)了。

因為熱(re)熔(rong)(rong)膠(jiao)膜(mo)達到一(yi)定溫(wen)(wen)(wen)(wen)度(du)后(hou)就(jiu)(jiu)會熔(rong)(rong)化，熔(rong)(rong)化后(hou)，即使前期已經形成良好的粘接，也會再一(yi)次失去粘接強度(du)。所以(yi)，熱(re)熔(rong)(rong)膠(jiao)膜(mo)的熔(rong)(rong)化溫(wen)(wen)(wen)(wen)度(du)，也就(jiu)(jiu)是接近它的一(yi)個耐(nai)(nai)溫(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)度(du)。超過(guo)這個耐(nai)(nai)溫(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)度(du)，熱(re)熔(rong)(rong)膠(jiao)膜(mo)就(jiu)(jiu)會失去粘接。所以(yi)，通(tong)常(chang)情況下(xia)，高(gao)溫(wen)(wen)(wen)(wen)熱(re)熔(rong)(rong)膠(jiao)膜(mo)的耐(nai)(nai)溫(wen)(wen)(wen)(wen)性能也是比較高(gao)的，相反，低溫(wen)(wen)(wen)(wen)熱(re)熔(rong)(rong)膠(jiao)膜(mo)它的耐(nai)(nai)高(gao)溫(wen)(wen)(wen)(wen)性能比較差。

值(zhi)得一(yi)提的(de)是(shi)，熔(rong)(rong)化溫度(du)(du)(du)和實際的(de)熱熔(rong)(rong)膠膜使用(yong)溫度(du)(du)(du)是(shi)不一(yi)樣的(de)。熱熔(rong)(rong)膠膜的(de)實際使用(yong)溫度(du)(du)(du)通(tong)常會比熔(rong)(rong)化溫度(du)(du)(du)高幾十(shi)度(du)(du)(du)。具體高多少還需要(yao)看熱熔(rong)(rong)膠膜本身的(de)熔(rong)(rong)指等(deng)其(qi)它(ta)特性，為的(de)是(shi)使得熱熔(rong)(rong)膠膜在更短的(de)時間內可以熔(rong)(rong)化。

通過(guo)上(shang)面(mian)的(de)說(shuo)明，我們似乎(hu)感(gan)覺到高溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)具有更(geng)好(hao)的(de)性能優勢，能復合(he)要(yao)求(qiu)更(geng)高的(de)場合(he)，但實際上(shang)并不(bu)是(shi)這樣(yang)。選(xuan)擇高溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)還(huan)是(shi)低(di)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)是(shi)由復合(he)的(de)材料類(lei)型(xing)決定的(de)。俗(su)話說(shuo)，存在(zai)即合(he)理！高溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)、低(di)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)本就是(shi)為了滿足不(bu)同材料的(de)復合(he)要(yao)求(qiu)而比研發推出的(de)，不(bu)能單獨(du)討論是(shi)高溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)好(hao)，還(huan)是(shi)低(di)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)更(geng)好(hao)。判定哪一種類(lei)型(xing)的(de)熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)更(geng)好(hao)或者更(geng)合(he)適，需要(yao)根(gen)據具體的(de)復合(he)要(yao)求(qiu)來測評、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)以符合性(xing)能需求。并(bing)且(qie)，使用低溫熱熔(rong)膠膜可(ke)以大大降(jiang)低能耗(hao)，在性(xing)能達到(dao)要求的基(ji)礎上，盡(jin)量做(zuo)到(dao)節能環保的，這才是我們(men)所(suo)追求的。