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(wen)低(di)溫(wen)的區別，這(zhe)主要是以熔點為依據來(lai)劃分(fen)的。下(xia)面來(lai)介紹下(xia)熱熔膠膜高溫(wen)與低(di)溫(wen)的區別。

1、高溫熱熔膠膜類型

高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)主要(yao)是指熔(rong)點(dian)溫(wen)(wen)(wen)(wen)度(du)(du)比較高(gao)(gao)(gao)的熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)，其實高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)類(lei)(lei)型(xing)熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)只有高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)，熔(rong)點(dian)溫(wen)(wen)(wen)(wen)度(du)(du)在(zai)(zai)(zai)150℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)在(zai)(zai)(zai)180℃左(zuo)右。還有一些中(zhong)高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)類(lei)(lei)型(xing)熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)，主要(yao)包括PA熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)點(dian)120℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)150℃）、PES熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)點(dian)溫(wen)(wen)(wen)(wen)度(du)(du)115℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)140℃）和PO熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)點(dian)在(zai)(zai)(zai)110℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)140℃左(zuo)右）以及中(zhong)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)（熔(rong)點(dian)在(zai)(zai)(zai)110℃，使(shi)(shi)用(yong)溫(wen)(wen)(wen)(wen)度(du)(du)在(zai)(zai)(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)溫(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)指的(de)是(shi)熔(rong)(rong)(rong)點溫(wen)(wen)度(du)低(di)的(de)熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)，除了中高(gao)(gao)溫(wen)(wen)和高(gao)(gao)溫(wen)(wen)類(lei)型的(de)，其他材(cai)質的(de)都(dou)屬于低(di)溫(wen)(wen)類(lei)型熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)，主(zhu)要包括(kuo)低(di)溫(wen)(wen)TPU熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)和EVA熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)。其中低(di)溫(wen)(wen)TPU熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)的(de)熔(rong)(rong)(rong)點溫(wen)(wen)度(du)在70℃，有的(de)型號(hao)可低(di)至五六十(shi)度(du)；而EVA的(de)熱熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)熔(rong)(rong)(rong)點主(zhu)要是(shi)在70攝(she)氏度(du)，低(di)的(de)型號(hao)可以(yi)達到四五十(shi)度(du)，具有良好的(de)耐低(di)溫(wen)(wen)性能。

3、高溫與低溫熱熔膠膜的區別

兩者最大的(de)區別就是熔(rong)(rong)(rong)點不(bu)(bu)(bu)同，除了熔(rong)(rong)(rong)點的(de)不(bu)(bu)(bu)同之外，在(zai)性(xing)能和使用(yong)范圍上也有(you)所(suo)不(bu)(bu)(bu)同。低(di)(di)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)主要是用(yong)在(zai)一些不(bu)(bu)(bu)耐高(gao)溫材質的(de)材料(liao)(liao)復合中，而高(gao)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)主要應用(yong)在(zai)有(you)耐高(gao)溫要求(qiu)的(de)領域。整體來說的(de)話，高(gao)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)的(de)粘接性(xing)能會更好一點，但是低(di)(di)溫熱(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)可以更好地保護(hu)材料(liao)(liao)不(bu)(bu)(bu)受到熱(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)熔膠(jiao)膜(mo)(mo)的(de)特點(dian)是(shi)需要(yao)加(jia)熱(re)熔化(hua)才(cai)(cai)具(ju)有(you)黏性，冷(leng)卻硬化(hua)后才(cai)(cai)具(ju)有(you)粘接強度。高溫(wen)熱(re)熔膠(jiao)膜(mo)(mo)顧(gu)名思義，就是(shi)需要(yao)加(jia)熱(re)的(de)溫(wen)度高，相(xiang)反，低(di)溫(wen)熱(re)熔膠(jiao)膜(mo)(mo)也就是(shi)在低(di)溫(wen)條件下就可以加(jia)熱(re)熔化(hua)了(le)。

因為熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)達(da)到一(yi)(yi)定溫(wen)(wen)度(du)(du)(du)(du)后就(jiu)會(hui)熔(rong)(rong)(rong)(rong)化，熔(rong)(rong)(rong)(rong)化后，即(ji)使(shi)前期已經形(xing)成良好的(de)(de)(de)粘(zhan)(zhan)接(jie)(jie)，也會(hui)再一(yi)(yi)次失去粘(zhan)(zhan)接(jie)(jie)強度(du)(du)(du)(du)。所以，熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)的(de)(de)(de)熔(rong)(rong)(rong)(rong)化溫(wen)(wen)度(du)(du)(du)(du)，也就(jiu)是接(jie)(jie)近它的(de)(de)(de)一(yi)(yi)個(ge)耐(nai)溫(wen)(wen)溫(wen)(wen)度(du)(du)(du)(du)。超(chao)過這個(ge)耐(nai)溫(wen)(wen)溫(wen)(wen)度(du)(du)(du)(du)，熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)就(jiu)會(hui)失去粘(zhan)(zhan)接(jie)(jie)。所以，通常(chang)情況下，高(gao)溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)的(de)(de)(de)耐(nai)溫(wen)(wen)性能(neng)(neng)也是比(bi)較高(gao)的(de)(de)(de)，相反(fan)，低溫(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)它的(de)(de)(de)耐(nai)高(gao)溫(wen)(wen)性能(neng)(neng)比(bi)較差。

值得一提的是(shi)，熔(rong)(rong)化(hua)溫(wen)(wen)度(du)和實際的熱熔(rong)(rong)膠(jiao)(jiao)膜使用溫(wen)(wen)度(du)是(shi)不一樣的。熱熔(rong)(rong)膠(jiao)(jiao)膜的實際使用溫(wen)(wen)度(du)通常(chang)會比熔(rong)(rong)化(hua)溫(wen)(wen)度(du)高(gao)幾十度(du)。具(ju)體高(gao)多少還需要(yao)看(kan)熱熔(rong)(rong)膠(jiao)(jiao)膜本身的熔(rong)(rong)指等(deng)其它特性，為的是(shi)使得熱熔(rong)(rong)膠(jiao)(jiao)膜在(zai)更短的時(shi)間內可以熔(rong)(rong)化(hua)。

通過上面的(de)(de)說明，我們似乎感覺到高(gao)溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜具(ju)有更(geng)好(hao)(hao)(hao)的(de)(de)性能優勢，能復(fu)(fu)(fu)合(he)(he)要求更(geng)高(gao)的(de)(de)場合(he)(he)，但實際上并不(bu)是這樣。選擇高(gao)溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜還(huan)是低溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜是由復(fu)(fu)(fu)合(he)(he)的(de)(de)材料類型決定(ding)(ding)的(de)(de)。俗話說，存在即合(he)(he)理！高(gao)溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜、低溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜本就(jiu)是為了滿(man)足不(bu)同材料的(de)(de)復(fu)(fu)(fu)合(he)(he)要求而(er)比研發推(tui)出的(de)(de)，不(bu)能單獨討論是高(gao)溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜好(hao)(hao)(hao)，還(huan)是低溫(wen)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜更(geng)好(hao)(hao)(hao)。判(pan)定(ding)(ding)哪一(yi)種類型的(de)(de)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)膜更(geng)好(hao)(hao)(hao)或者更(geng)合(he)(he)適，需(xu)要根據具(ju)體的(de)(de)復(fu)(fu)(fu)合(he)(he)要求來測評、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(jiu)可以(yi)符合性能(neng)需求。并且，使(shi)用低溫熱熔(rong)膠膜(mo)可以(yi)大大降低能(neng)耗，在性能(neng)達到要(yao)求的基礎(chu)上，盡量(liang)做到節能(neng)環保的，這才是我們(men)所追求的。