一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具有高(gao)溫(wen)低溫(wen)的(de)區別(bie)，這主要是(shi)以(yi)熔(rong)點(dian)為依據來劃分的(de)。下(xia)面來介紹(shao)下(xia)熱熔(rong)膠(jiao)膜高(gao)溫(wen)與低溫(wen)的(de)區別(bie)。

1、高溫熱熔膠膜類型

高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)膜主要(yao)是指熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度比較高(gao)的熱熔(rong)(rong)(rong)膠(jiao)膜，其實高(gao)溫(wen)(wen)(wen)類型熱熔(rong)(rong)(rong)膠(jiao)膜只有(you)高(gao)溫(wen)(wen)(wen)TPU熱熔(rong)(rong)(rong)膠(jiao)膜，熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度在(zai)(zai)150℃，使用(yong)溫(wen)(wen)(wen)度在(zai)(zai)180℃左(zuo)右。還有(you)一些中高(gao)溫(wen)(wen)(wen)類型熱熔(rong)(rong)(rong)膠(jiao)膜，主要(yao)包括PA熱熔(rong)(rong)(rong)膠(jiao)膜（熔(rong)(rong)(rong)點(dian)(dian)120℃，使用(yong)溫(wen)(wen)(wen)度150℃）、PES熱熔(rong)(rong)(rong)膠(jiao)膜（熔(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度115℃，使用(yong)溫(wen)(wen)(wen)度140℃）和(he)PO熱熔(rong)(rong)(rong)膠(jiao)膜（熔(rong)(rong)(rong)點(dian)(dian)在(zai)(zai)110℃，使用(yong)溫(wen)(wen)(wen)度140℃左(zuo)右）以(yi)及中溫(wen)(wen)(wen)TPU熱熔(rong)(rong)(rong)膠(jiao)膜（熔(rong)(rong)(rong)點(dian)(dian)在(zai)(zai)110℃，使用(yong)溫(wen)(wen)(wen)度在(zai)(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)溫(wen)(wen)(wen)(wen)熱(re)(re)熔膠膜(mo)指的(de)(de)是(shi)熔點(dian)溫(wen)(wen)(wen)(wen)度低(di)的(de)(de)熱(re)(re)熔膠膜(mo)，除了中高(gao)溫(wen)(wen)(wen)(wen)和(he)高(gao)溫(wen)(wen)(wen)(wen)類(lei)型(xing)的(de)(de)，其他材質(zhi)的(de)(de)都屬(shu)于低(di)溫(wen)(wen)(wen)(wen)類(lei)型(xing)熱(re)(re)熔膠膜(mo)，主要包括低(di)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)熔膠膜(mo)和(he)EVA熱(re)(re)熔膠膜(mo)。其中低(di)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)熔膠膜(mo)的(de)(de)熔點(dian)溫(wen)(wen)(wen)(wen)度在70℃，有的(de)(de)型(xing)號可低(di)至(zhi)五六十度；而EVA的(de)(de)熱(re)(re)熔膠膜(mo)熔點(dian)主要是(shi)在70攝氏度，低(di)的(de)(de)型(xing)號可以達到四(si)五十度，具有良好的(de)(de)耐(nai)低(di)溫(wen)(wen)(wen)(wen)性能。

3、高溫與低溫熱熔膠膜的區別

兩者最大的(de)(de)區別就(jiu)是熔(rong)(rong)點不(bu)同(tong)，除(chu)了熔(rong)(rong)點的(de)(de)不(bu)同(tong)之外，在性(xing)能(neng)和使(shi)用(yong)范圍(wei)上(shang)也有所不(bu)同(tong)。低溫熱(re)熔(rong)(rong)膠膜主(zhu)要(yao)是用(yong)在一些不(bu)耐(nai)高溫材質的(de)(de)材料(liao)復合中，而高溫熱(re)熔(rong)(rong)膠膜主(zhu)要(yao)應用(yong)在有耐(nai)高溫要(yao)求的(de)(de)領域。整體來(lai)說的(de)(de)話，高溫熱(re)熔(rong)(rong)膠膜的(de)(de)粘接性(xing)能(neng)會更(geng)好一點，但是低溫熱(re)熔(rong)(rong)膠膜可以更(geng)好地保(bao)護材料(liao)不(bu)受到熱(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)(re)熔膠膜(mo)(mo)的(de)特點是(shi)需要加熱(re)(re)熔化(hua)才(cai)具有黏性，冷卻硬化(hua)后才(cai)具有粘接強(qiang)度。高溫(wen)熱(re)(re)熔膠膜(mo)(mo)顧名思義(yi)，就是(shi)需要加熱(re)(re)的(de)溫(wen)度高，相反，低溫(wen)熱(re)(re)熔膠膜(mo)(mo)也就是(shi)在低溫(wen)條(tiao)件下就可以加熱(re)(re)熔化(hua)了。

因為熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)達到一(yi)定(ding)溫(wen)(wen)(wen)度(du)(du)后就會(hui)熔(rong)(rong)(rong)化(hua)，熔(rong)(rong)(rong)化(hua)后，即使前(qian)期已經形成良好的(de)(de)(de)粘(zhan)接(jie)，也會(hui)再一(yi)次(ci)失去(qu)粘(zhan)接(jie)強度(du)(du)。所以(yi)，熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)的(de)(de)(de)熔(rong)(rong)(rong)化(hua)溫(wen)(wen)(wen)度(du)(du)，也就是接(jie)近它的(de)(de)(de)一(yi)個耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)(du)。超過這個耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)(du)，熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)就會(hui)失去(qu)粘(zhan)接(jie)。所以(yi)，通常(chang)情況(kuang)下，高溫(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)的(de)(de)(de)耐(nai)溫(wen)(wen)(wen)性(xing)能也是比較高的(de)(de)(de)，相反，低溫(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)它的(de)(de)(de)耐(nai)高溫(wen)(wen)(wen)性(xing)能比較差。

值得(de)一提的(de)(de)(de)是，熔(rong)(rong)(rong)化(hua)(hua)(hua)溫度(du)(du)(du)和實際的(de)(de)(de)熱熔(rong)(rong)(rong)膠膜(mo)使(shi)用溫度(du)(du)(du)是不一樣的(de)(de)(de)。熱熔(rong)(rong)(rong)膠膜(mo)的(de)(de)(de)實際使(shi)用溫度(du)(du)(du)通常會比熔(rong)(rong)(rong)化(hua)(hua)(hua)溫度(du)(du)(du)高(gao)(gao)幾十度(du)(du)(du)。具體高(gao)(gao)多少還需要看熱熔(rong)(rong)(rong)膠膜(mo)本身的(de)(de)(de)熔(rong)(rong)(rong)指(zhi)等其它(ta)特性，為的(de)(de)(de)是使(shi)得(de)熱熔(rong)(rong)(rong)膠膜(mo)在更短(duan)的(de)(de)(de)時間內可(ke)以熔(rong)(rong)(rong)化(hua)(hua)(hua)。

通(tong)過上面的說明，我(wo)們似乎感覺到高(gao)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)具(ju)有更(geng)(geng)好的性能(neng)優勢，能(neng)復(fu)合(he)要求(qiu)更(geng)(geng)高(gao)的場合(he)，但實際上并不是(shi)(shi)(shi)這樣。選(xuan)擇高(gao)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)還是(shi)(shi)(shi)低(di)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)是(shi)(shi)(shi)由復(fu)合(he)的材料(liao)(liao)類(lei)型決(jue)定(ding)的。俗話說，存在(zai)即合(he)理！高(gao)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)、低(di)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)本就(jiu)是(shi)(shi)(shi)為(wei)了滿足(zu)不同材料(liao)(liao)的復(fu)合(he)要求(qiu)而(er)比研發推(tui)出(chu)的，不能(neng)單獨(du)討論是(shi)(shi)(shi)高(gao)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)好，還是(shi)(shi)(shi)低(di)溫(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)更(geng)(geng)好。判定(ding)哪一種類(lei)型的熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜(mo)更(geng)(geng)好或者更(geng)(geng)合(he)適(shi)，需要根據具(ju)體的復(fu)合(he)要求(qiu)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(jiu)可以符(fu)合性能(neng)需(xu)求(qiu)。并且，使用(yong)低(di)溫(wen)熱熔膠(jiao)膜可以大大降低(di)能(neng)耗，在性能(neng)達到(dao)要求(qiu)的基(ji)礎上，盡量做到(dao)節能(neng)環保的，這才是我(wo)們(men)所追求(qiu)的。