一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具有(you)高溫低溫的區(qu)別，這主要(yao)是以(yi)熔(rong)點(dian)為依據來(lai)劃分的。下面來(lai)介紹下熱熔(rong)膠膜高溫與低溫的區(qu)別。

1、高溫熱熔膠膜類型

高(gao)(gao)溫熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)主(zhu)要(yao)是(shi)指熔(rong)點(dian)(dian)(dian)溫度(du)比較高(gao)(gao)的熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，其實高(gao)(gao)溫類型熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)只有高(gao)(gao)溫TPU熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，熔(rong)點(dian)(dian)(dian)溫度(du)在(zai)150℃，使用溫度(du)在(zai)180℃左右。還有一些中高(gao)(gao)溫類型熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，主(zhu)要(yao)包括PA熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)點(dian)(dian)(dian)120℃，使用溫度(du)150℃）、PES熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)點(dian)(dian)(dian)溫度(du)115℃，使用溫度(du)140℃）和(he)PO熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)點(dian)(dian)(dian)在(zai)110℃，使用溫度(du)140℃左右）以及中溫TPU熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)點(dian)(dian)(dian)在(zai)110℃，使用溫度(du)在(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)(di)(di)溫(wen)熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)指的(de)(de)(de)是熔(rong)(rong)(rong)點(dian)(dian)溫(wen)度(du)(du)低(di)(di)(di)的(de)(de)(de)熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，除(chu)了(le)中高溫(wen)和(he)高溫(wen)類型的(de)(de)(de)，其他材質的(de)(de)(de)都屬于低(di)(di)(di)溫(wen)類型熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，主(zhu)要包括低(di)(di)(di)溫(wen)TPU熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)和(he)EVA熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)。其中低(di)(di)(di)溫(wen)TPU熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)的(de)(de)(de)熔(rong)(rong)(rong)點(dian)(dian)溫(wen)度(du)(du)在(zai)70℃，有(you)的(de)(de)(de)型號可(ke)低(di)(di)(di)至五六十度(du)(du)；而EVA的(de)(de)(de)熱(re)(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)熔(rong)(rong)(rong)點(dian)(dian)主(zhu)要是在(zai)70攝氏(shi)度(du)(du)，低(di)(di)(di)的(de)(de)(de)型號可(ke)以達到四五十度(du)(du)，具有(you)良好的(de)(de)(de)耐(nai)低(di)(di)(di)溫(wen)性(xing)能。

3、高溫與低溫熱熔膠膜的區別

兩者最大的區(qu)別(bie)就是(shi)(shi)熔(rong)(rong)點不同(tong)，除(chu)了(le)熔(rong)(rong)點的不同(tong)之外，在性(xing)能(neng)(neng)和(he)使用范圍(wei)上也有所不同(tong)。低溫(wen)(wen)(wen)熱熔(rong)(rong)膠(jiao)膜(mo)主要(yao)(yao)是(shi)(shi)用在一些不耐高(gao)溫(wen)(wen)(wen)材質的材料復合中，而高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)膠(jiao)膜(mo)主要(yao)(yao)應用在有耐高(gao)溫(wen)(wen)(wen)要(yao)(yao)求的領域。整體來說的話，高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)膠(jiao)膜(mo)的粘接性(xing)能(neng)(neng)會更(geng)好(hao)一點，但是(shi)(shi)低溫(wen)(wen)(wen)熱熔(rong)(rong)膠(jiao)膜(mo)可以更(geng)好(hao)地保護材料不受到熱損傷。

二、熱熔膠膜高溫好還是低溫好

熱熔(rong)膠膜(mo)(mo)的(de)特(te)點(dian)是需要加熱熔(rong)化(hua)(hua)才具有(you)黏(nian)性，冷卻硬化(hua)(hua)后才具有(you)粘接強(qiang)度(du)。高溫熱熔(rong)膠膜(mo)(mo)顧名思義，就是需要加熱的(de)溫度(du)高，相反，低溫熱熔(rong)膠膜(mo)(mo)也(ye)就是在低溫條件下就可以加熱熔(rong)化(hua)(hua)了。

因為(wei)熱熔膠(jiao)(jiao)膜達到一(yi)(yi)定溫(wen)(wen)(wen)度(du)(du)后(hou)就(jiu)會(hui)熔化，熔化后(hou)，即使前期已(yi)經形成良好的(de)(de)粘(zhan)接(jie)，也會(hui)再(zai)一(yi)(yi)次失(shi)去粘(zhan)接(jie)強度(du)(du)。所(suo)以，熱熔膠(jiao)(jiao)膜的(de)(de)熔化溫(wen)(wen)(wen)度(du)(du)，也就(jiu)是接(jie)近它的(de)(de)一(yi)(yi)個耐(nai)(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)(du)。超過(guo)這個耐(nai)(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)(du)，熱熔膠(jiao)(jiao)膜就(jiu)會(hui)失(shi)去粘(zhan)接(jie)。所(suo)以，通常情(qing)況(kuang)下，高(gao)(gao)(gao)溫(wen)(wen)(wen)熱熔膠(jiao)(jiao)膜的(de)(de)耐(nai)(nai)溫(wen)(wen)(wen)性能(neng)也是比較高(gao)(gao)(gao)的(de)(de)，相(xiang)反，低溫(wen)(wen)(wen)熱熔膠(jiao)(jiao)膜它的(de)(de)耐(nai)(nai)高(gao)(gao)(gao)溫(wen)(wen)(wen)性能(neng)比較差(cha)。

值得一提的是，熔(rong)(rong)化溫(wen)(wen)度(du)和(he)實際的熱熔(rong)(rong)膠膜使(shi)(shi)用溫(wen)(wen)度(du)是不一樣的。熱熔(rong)(rong)膠膜的實際使(shi)(shi)用溫(wen)(wen)度(du)通常會比熔(rong)(rong)化溫(wen)(wen)度(du)高幾十度(du)。具(ju)體高多(duo)少(shao)還需要看(kan)熱熔(rong)(rong)膠膜本身的熔(rong)(rong)指等其它特性，為的是使(shi)(shi)得熱熔(rong)(rong)膠膜在(zai)更(geng)短的時間內可以熔(rong)(rong)化。

通過上(shang)面的說明，我們似(si)乎感覺到高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)具有更(geng)(geng)(geng)好的性能優勢，能復合(he)要(yao)(yao)求(qiu)(qiu)更(geng)(geng)(geng)高(gao)的場合(he)，但(dan)實際上(shang)并不是(shi)這樣。選擇高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)還是(shi)低(di)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)是(shi)由復合(he)的材料類型決定的。俗(su)話說，存(cun)在即合(he)理！高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)、低(di)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)本就是(shi)為(wei)了滿足不同材料的復合(he)要(yao)(yao)求(qiu)(qiu)而比研發推出的，不能單(dan)獨討論是(shi)高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)好，還是(shi)低(di)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)更(geng)(geng)(geng)好。判(pan)定哪一種類型的熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)更(geng)(geng)(geng)好或者更(geng)(geng)(geng)合(he)適，需要(yao)(yao)根據具體的復合(he)要(yao)(yao)求(qiu)(qiu)來測評、判(pan)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以符(fu)合性(xing)能(neng)需(xu)求(qiu)。并且，使用低溫熱熔(rong)膠膜可以大大降(jiang)低能(neng)耗(hao)，在性(xing)能(neng)達到(dao)要求(qiu)的基礎上(shang)，盡量做到(dao)節能(neng)環保的，這才是我們所追求(qiu)的。