一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具(ju)有(you)高(gao)溫(wen)低溫(wen)的(de)(de)區別(bie)，這主要(yao)是以(yi)熔(rong)點為依據來(lai)(lai)劃分的(de)(de)。下面(mian)來(lai)(lai)介(jie)紹下熱熔(rong)膠膜高(gao)溫(wen)與低溫(wen)的(de)(de)區別(bie)。

1、高溫熱熔膠膜類型

高(gao)溫(wen)(wen)(wen)(wen)熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)主(zhu)要(yao)是指熔(rong)(rong)(rong)(rong)點溫(wen)(wen)(wen)(wen)度比較(jiao)高(gao)的熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)，其實高(gao)溫(wen)(wen)(wen)(wen)類(lei)型熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)只有高(gao)溫(wen)(wen)(wen)(wen)TPU熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)，熔(rong)(rong)(rong)(rong)點溫(wen)(wen)(wen)(wen)度在(zai)150℃，使(shi)用(yong)溫(wen)(wen)(wen)(wen)度在(zai)180℃左右。還有一些中(zhong)高(gao)溫(wen)(wen)(wen)(wen)類(lei)型熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)，主(zhu)要(yao)包括PA熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點120℃，使(shi)用(yong)溫(wen)(wen)(wen)(wen)度150℃）、PES熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點溫(wen)(wen)(wen)(wen)度115℃，使(shi)用(yong)溫(wen)(wen)(wen)(wen)度140℃）和PO熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點在(zai)110℃，使(shi)用(yong)溫(wen)(wen)(wen)(wen)度140℃左右）以及中(zhong)溫(wen)(wen)(wen)(wen)TPU熱熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點在(zai)110℃，使(shi)用(yong)溫(wen)(wen)(wen)(wen)度在(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)(di)溫(wen)熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)指的(de)是(shi)熔(rong)(rong)點(dian)溫(wen)度(du)(du)低(di)(di)的(de)熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，除了中(zhong)高溫(wen)和高溫(wen)類型(xing)的(de)，其他材質的(de)都屬(shu)于低(di)(di)溫(wen)類型(xing)熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，主要包括(kuo)低(di)(di)溫(wen)TPU熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)和EVA熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)。其中(zhong)低(di)(di)溫(wen)TPU熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)的(de)熔(rong)(rong)點(dian)溫(wen)度(du)(du)在(zai)70℃，有的(de)型(xing)號可低(di)(di)至五六十度(du)(du)；而EVA的(de)熱(re)熔(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)熔(rong)(rong)點(dian)主要是(shi)在(zai)70攝氏(shi)度(du)(du)，低(di)(di)的(de)型(xing)號可以達到(dao)四五十度(du)(du)，具有良好的(de)耐低(di)(di)溫(wen)性能。

3、高溫與低溫熱熔膠膜的區別

兩(liang)者最大的(de)區別就是(shi)熔(rong)(rong)點(dian)不同，除了熔(rong)(rong)點(dian)的(de)不同之外，在(zai)(zai)性(xing)能(neng)和使用(yong)范(fan)圍(wei)上也有所不同。低溫熱(re)(re)熔(rong)(rong)膠(jiao)膜主(zhu)要是(shi)用(yong)在(zai)(zai)一些不耐(nai)(nai)高(gao)溫材質的(de)材料(liao)復合中(zhong)，而高(gao)溫熱(re)(re)熔(rong)(rong)膠(jiao)膜主(zhu)要應用(yong)在(zai)(zai)有耐(nai)(nai)高(gao)溫要求(qiu)的(de)領域(yu)。整體來說的(de)話，高(gao)溫熱(re)(re)熔(rong)(rong)膠(jiao)膜的(de)粘接性(xing)能(neng)會更(geng)好(hao)一點(dian)，但是(shi)低溫熱(re)(re)熔(rong)(rong)膠(jiao)膜可(ke)以(yi)更(geng)好(hao)地保護材料(liao)不受到(dao)熱(re)(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)熔(rong)(rong)膠膜的(de)特點是(shi)(shi)需(xu)要加熱(re)熔(rong)(rong)化才(cai)具有(you)黏(nian)性，冷(leng)卻硬化后才(cai)具有(you)粘(zhan)接強(qiang)度。高溫(wen)熱(re)熔(rong)(rong)膠膜顧名思義，就(jiu)是(shi)(shi)需(xu)要加熱(re)的(de)溫(wen)度高，相(xiang)反，低(di)溫(wen)熱(re)熔(rong)(rong)膠膜也就(jiu)是(shi)(shi)在低(di)溫(wen)條件下就(jiu)可以加熱(re)熔(rong)(rong)化了。

因為熱(re)(re)熔膠膜(mo)達到(dao)一(yi)定溫(wen)(wen)(wen)度(du)后(hou)就(jiu)會(hui)熔化(hua)(hua)，熔化(hua)(hua)后(hou)，即使(shi)前期(qi)已經形(xing)成(cheng)良(liang)好(hao)的(de)(de)(de)粘接(jie)，也會(hui)再(zai)一(yi)次(ci)失(shi)去(qu)粘接(jie)強度(du)。所以(yi)，熱(re)(re)熔膠膜(mo)的(de)(de)(de)熔化(hua)(hua)溫(wen)(wen)(wen)度(du)，也就(jiu)是(shi)接(jie)近它的(de)(de)(de)一(yi)個耐溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)。超過(guo)這個耐溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)，熱(re)(re)熔膠膜(mo)就(jiu)會(hui)失(shi)去(qu)粘接(jie)。所以(yi)，通(tong)常(chang)情況下，高溫(wen)(wen)(wen)熱(re)(re)熔膠膜(mo)的(de)(de)(de)耐溫(wen)(wen)(wen)性能(neng)也是(shi)比較高的(de)(de)(de)，相反，低溫(wen)(wen)(wen)熱(re)(re)熔膠膜(mo)它的(de)(de)(de)耐高溫(wen)(wen)(wen)性能(neng)比較差(cha)。

值得一(yi)提(ti)的(de)是(shi)，熔化溫度和實際(ji)的(de)熱(re)(re)(re)熔膠(jiao)膜(mo)使(shi)用溫度是(shi)不一(yi)樣的(de)。熱(re)(re)(re)熔膠(jiao)膜(mo)的(de)實際(ji)使(shi)用溫度通(tong)常(chang)會比(bi)熔化溫度高幾十度。具體高多少(shao)還需要(yao)看熱(re)(re)(re)熔膠(jiao)膜(mo)本身的(de)熔指等其它(ta)特性，為(wei)的(de)是(shi)使(shi)得熱(re)(re)(re)熔膠(jiao)膜(mo)在(zai)更短的(de)時(shi)間內(nei)可以熔化。

通(tong)過上(shang)面的(de)(de)(de)(de)說(shuo)明，我們似乎感覺到高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)具有更好的(de)(de)(de)(de)性能優勢，能復合要(yao)求更高(gao)的(de)(de)(de)(de)場(chang)合，但(dan)實際(ji)上(shang)并不(bu)是這樣。選擇(ze)高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)還(huan)是低溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)是由復合的(de)(de)(de)(de)材料(liao)類(lei)型(xing)決(jue)定的(de)(de)(de)(de)。俗話說(shuo)，存在即合理！高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)、低溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)本就(jiu)是為了滿足不(bu)同材料(liao)的(de)(de)(de)(de)復合要(yao)求而(er)比研發(fa)推出的(de)(de)(de)(de)，不(bu)能單獨(du)討論(lun)是高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)好，還(huan)是低溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)更好。判(pan)定哪一種類(lei)型(xing)的(de)(de)(de)(de)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)更好或者(zhe)更合適，需要(yao)根據具體(ti)的(de)(de)(de)(de)復合要(yao)求來測評(ping)、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(rong)膠膜可以大(da)大(da)降低能耗，在(zai)性能達到(dao)要求(qiu)的(de)基礎上，盡量做到(dao)節能環保的(de)，這才是我們所追求(qiu)的(de)。