一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具(ju)有高溫低溫的區別(bie)，這主要(yao)是以熔(rong)點為依據來劃分的。下面來介紹下熱熔(rong)膠膜高溫與低溫的區別(bie)。

1、高溫熱熔膠膜類型

高(gao)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)主要是指熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)度(du)比較高(gao)的熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)，其實(shi)高(gao)溫(wen)(wen)類型熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)只(zhi)有(you)高(gao)溫(wen)(wen)TPU熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)，熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)度(du)在150℃，使(shi)用溫(wen)(wen)度(du)在180℃左右(you)。還有(you)一些(xie)中高(gao)溫(wen)(wen)類型熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)，主要包括PA熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)120℃，使(shi)用溫(wen)(wen)度(du)150℃）、PES熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)度(du)115℃，使(shi)用溫(wen)(wen)度(du)140℃）和PO熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)在110℃，使(shi)用溫(wen)(wen)度(du)140℃左右(you)）以及中溫(wen)(wen)TPU熱(re)(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)點(dian)(dian)在110℃，使(shi)用溫(wen)(wen)度(du)在140℃）。

2、低溫熱熔膠膜類型

低(di)溫(wen)(wen)(wen)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)指的(de)(de)是(shi)熔(rong)(rong)(rong)點溫(wen)(wen)(wen)度低(di)的(de)(de)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)，除了(le)中(zhong)高溫(wen)(wen)(wen)和高溫(wen)(wen)(wen)類型的(de)(de)，其(qi)他材質的(de)(de)都屬于低(di)溫(wen)(wen)(wen)類型熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)，主要(yao)(yao)包括低(di)溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)和EVA熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)。其(qi)中(zhong)低(di)溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)的(de)(de)熔(rong)(rong)(rong)點溫(wen)(wen)(wen)度在(zai)70℃，有的(de)(de)型號(hao)可(ke)低(di)至五(wu)六十(shi)(shi)度；而EVA的(de)(de)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)(mo)熔(rong)(rong)(rong)點主要(yao)(yao)是(shi)在(zai)70攝氏度，低(di)的(de)(de)型號(hao)可(ke)以達到四五(wu)十(shi)(shi)度，具有良好(hao)的(de)(de)耐低(di)溫(wen)(wen)(wen)性(xing)能。

3、高溫與低溫熱熔膠膜的區別

兩者最(zui)大(da)的(de)區別就是熔(rong)點(dian)不同，除了熔(rong)點(dian)的(de)不同之外，在(zai)性能和(he)使用(yong)(yong)范圍上(shang)也(ye)有所不同。低(di)溫(wen)熱熔(rong)膠(jiao)膜主(zhu)要是用(yong)(yong)在(zai)一些不耐(nai)高溫(wen)材質的(de)材料(liao)復(fu)合中，而高溫(wen)熱熔(rong)膠(jiao)膜主(zhu)要應用(yong)(yong)在(zai)有耐(nai)高溫(wen)要求(qiu)的(de)領域。整體來說的(de)話，高溫(wen)熱熔(rong)膠(jiao)膜的(de)粘接(jie)性能會更(geng)好(hao)一點(dian)，但是低(di)溫(wen)熱熔(rong)膠(jiao)膜可以(yi)更(geng)好(hao)地(di)保(bao)護材料(liao)不受到熱損(sun)傷。

二、熱熔膠膜高溫好還是低溫好

熱熔(rong)膠膜的特點是需要加(jia)熱熔(rong)化(hua)才(cai)具有黏性，冷卻硬化(hua)后才(cai)具有粘接強(qiang)度。高(gao)溫(wen)熱熔(rong)膠膜顧名思義，就(jiu)是需要加(jia)熱的溫(wen)度高(gao)，相反，低溫(wen)熱熔(rong)膠膜也就(jiu)是在低溫(wen)條件下就(jiu)可(ke)以(yi)加(jia)熱熔(rong)化(hua)了。

因為熱(re)(re)熔膠(jiao)(jiao)膜(mo)達(da)到(dao)一定(ding)溫(wen)(wen)(wen)度后就(jiu)會熔化，熔化后，即使前期已經(jing)形(xing)成良好的(de)粘接，也會再一次失去粘接強度。所(suo)以，熱(re)(re)熔膠(jiao)(jiao)膜(mo)的(de)熔化溫(wen)(wen)(wen)度，也就(jiu)是接近它的(de)一個耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度。超過(guo)這個耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度，熱(re)(re)熔膠(jiao)(jiao)膜(mo)就(jiu)會失去粘接。所(suo)以，通常(chang)情(qing)況下，高(gao)(gao)溫(wen)(wen)(wen)熱(re)(re)熔膠(jiao)(jiao)膜(mo)的(de)耐(nai)溫(wen)(wen)(wen)性(xing)能也是比較(jiao)高(gao)(gao)的(de)，相反，低溫(wen)(wen)(wen)熱(re)(re)熔膠(jiao)(jiao)膜(mo)它的(de)耐(nai)高(gao)(gao)溫(wen)(wen)(wen)性(xing)能比較(jiao)差。

值得一提的(de)(de)是(shi)，熔(rong)(rong)化溫(wen)度和實際的(de)(de)熱熔(rong)(rong)膠(jiao)膜使用溫(wen)度是(shi)不(bu)一樣(yang)的(de)(de)。熱熔(rong)(rong)膠(jiao)膜的(de)(de)實際使用溫(wen)度通常會比熔(rong)(rong)化溫(wen)度高(gao)(gao)幾(ji)十度。具(ju)體高(gao)(gao)多(duo)少還需(xu)要看熱熔(rong)(rong)膠(jiao)膜本身的(de)(de)熔(rong)(rong)指等其它特性，為的(de)(de)是(shi)使得熱熔(rong)(rong)膠(jiao)膜在更短的(de)(de)時(shi)間內可以熔(rong)(rong)化。

通過上(shang)面的(de)說(shuo)明(ming)，我們似乎(hu)感覺到高溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)具(ju)有更(geng)好的(de)性(xing)能(neng)優勢，能(neng)復(fu)(fu)(fu)(fu)合(he)(he)(he)(he)要(yao)求更(geng)高的(de)場(chang)合(he)(he)(he)(he)，但實際上(shang)并不(bu)是(shi)(shi)這(zhe)樣。選擇(ze)高溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)還(huan)是(shi)(shi)低(di)溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)是(shi)(shi)由(you)復(fu)(fu)(fu)(fu)合(he)(he)(he)(he)的(de)材(cai)料(liao)(liao)類型決(jue)定的(de)。俗(su)話說(shuo)，存在(zai)即合(he)(he)(he)(he)理！高溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)、低(di)溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)本(ben)就是(shi)(shi)為了滿(man)足不(bu)同(tong)材(cai)料(liao)(liao)的(de)復(fu)(fu)(fu)(fu)合(he)(he)(he)(he)要(yao)求而比研(yan)發推出(chu)的(de)，不(bu)能(neng)單獨討論是(shi)(shi)高溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)好，還(huan)是(shi)(shi)低(di)溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)更(geng)好。判(pan)定哪一種類型的(de)熱(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)更(geng)好或者更(geng)合(he)(he)(he)(he)適，需要(yao)根據具(ju)體的(de)復(fu)(fu)(fu)(fu)合(he)(he)(he)(he)要(yao)求來測評、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合性能需求(qiu)。并且，使用低溫熱熔膠膜可以大(da)大(da)降低能耗(hao)，在(zai)性能達(da)到(dao)要求(qiu)的基礎上，盡量做到(dao)節(jie)能環保的，這(zhe)才(cai)是(shi)我們所追求(qiu)的。