一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具有高溫低(di)溫的區(qu)別，這主要是以(yi)熔點為依(yi)據來劃分(fen)的。下面來介紹下熱熔膠膜高溫與低(di)溫的區(qu)別。

1、高溫熱熔膠膜類型

高(gao)溫(wen)(wen)(wen)熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)主要(yao)是指熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度(du)(du)比較高(gao)的熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)，其實高(gao)溫(wen)(wen)(wen)類型熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)只有高(gao)溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)，熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度(du)(du)在150℃，使用(yong)溫(wen)(wen)(wen)度(du)(du)在180℃左右(you)。還有一些(xie)中高(gao)溫(wen)(wen)(wen)類型熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)，主要(yao)包括PA熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)120℃，使用(yong)溫(wen)(wen)(wen)度(du)(du)150℃）、PES熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度(du)(du)115℃，使用(yong)溫(wen)(wen)(wen)度(du)(du)140℃）和(he)PO熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)在110℃，使用(yong)溫(wen)(wen)(wen)度(du)(du)140℃左右(you)）以及中溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠膜(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)在110℃，使用(yong)溫(wen)(wen)(wen)度(du)(du)在140℃）。

2、低溫熱熔膠膜類型

低(di)(di)(di)溫(wen)(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)指的(de)(de)(de)是(shi)熔(rong)點溫(wen)(wen)度(du)(du)低(di)(di)(di)的(de)(de)(de)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)，除了中高溫(wen)(wen)和(he)高溫(wen)(wen)類型(xing)的(de)(de)(de)，其他材質的(de)(de)(de)都屬于低(di)(di)(di)溫(wen)(wen)類型(xing)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)，主要(yao)包括低(di)(di)(di)溫(wen)(wen)TPU熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)和(he)EVA熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)。其中低(di)(di)(di)溫(wen)(wen)TPU熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)的(de)(de)(de)熔(rong)點溫(wen)(wen)度(du)(du)在(zai)70℃，有的(de)(de)(de)型(xing)號可低(di)(di)(di)至(zhi)五(wu)六十(shi)度(du)(du)；而EVA的(de)(de)(de)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)熔(rong)點主要(yao)是(shi)在(zai)70攝氏度(du)(du)，低(di)(di)(di)的(de)(de)(de)型(xing)號可以達到四(si)五(wu)十(shi)度(du)(du)，具有良好(hao)的(de)(de)(de)耐低(di)(di)(di)溫(wen)(wen)性能(neng)。

3、高溫與低溫熱熔膠膜的區別

兩者最大的(de)區別就是(shi)熔點不同，除了(le)熔點的(de)不同之外(wai)，在(zai)性能和使用(yong)(yong)范圍上也有所不同。低(di)溫(wen)(wen)熱(re)熔膠膜主(zhu)要是(shi)用(yong)(yong)在(zai)一(yi)些不耐高溫(wen)(wen)材(cai)質的(de)材(cai)料復合中，而高溫(wen)(wen)熱(re)熔膠膜主(zhu)要應用(yong)(yong)在(zai)有耐高溫(wen)(wen)要求(qiu)的(de)領域。整(zheng)體(ti)來說的(de)話，高溫(wen)(wen)熱(re)熔膠膜的(de)粘接性能會更好一(yi)點，但(dan)是(shi)低(di)溫(wen)(wen)熱(re)熔膠膜可以更好地保護材(cai)料不受到熱(re)損(sun)傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)熔膠(jiao)膜的特點是需要加(jia)(jia)熱(re)熔化才(cai)具有黏性，冷(leng)卻硬(ying)化后才(cai)具有粘(zhan)接強度。高(gao)溫(wen)熱(re)熔膠(jiao)膜顧(gu)名思義，就(jiu)是需要加(jia)(jia)熱(re)的溫(wen)度高(gao)，相反，低(di)溫(wen)熱(re)熔膠(jiao)膜也就(jiu)是在低(di)溫(wen)條件下就(jiu)可(ke)以加(jia)(jia)熱(re)熔化了(le)。

因為熱(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)達(da)到一(yi)定溫(wen)(wen)(wen)度(du)后就會(hui)熔(rong)化，熔(rong)化后，即使(shi)前期已經形成良好的粘(zhan)接，也(ye)會(hui)再一(yi)次失去粘(zhan)接強度(du)。所以(yi)，熱(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)的熔(rong)化溫(wen)(wen)(wen)度(du)，也(ye)就是接近它(ta)的一(yi)個(ge)耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)。超過這個(ge)耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度(du)，熱(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)就會(hui)失去粘(zhan)接。所以(yi)，通常情況(kuang)下，高溫(wen)(wen)(wen)熱(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)的耐(nai)溫(wen)(wen)(wen)性能(neng)也(ye)是比較高的，相反，低溫(wen)(wen)(wen)熱(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)它(ta)的耐(nai)高溫(wen)(wen)(wen)性能(neng)比較差。

值得(de)一提的是(shi)(shi)，熔化溫度(du)和(he)實(shi)際的熱(re)熔膠(jiao)膜使(shi)用溫度(du)是(shi)(shi)不一樣的。熱(re)熔膠(jiao)膜的實(shi)際使(shi)用溫度(du)通常會比熔化溫度(du)高幾(ji)十度(du)。具體高多少還需要看熱(re)熔膠(jiao)膜本身的熔指等其它特性，為的是(shi)(shi)使(shi)得(de)熱(re)熔膠(jiao)膜在更短的時間內(nei)可以熔化。

通過上面的(de)說明(ming)，我們似乎感(gan)覺到高(gao)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)具(ju)(ju)有更(geng)好的(de)性能優勢，能復(fu)合(he)要求(qiu)更(geng)高(gao)的(de)場合(he)，但實際上并不是這樣(yang)。選(xuan)擇(ze)高(gao)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)還是低(di)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)是由(you)復(fu)合(he)的(de)材(cai)料類型(xing)決定的(de)。俗話(hua)說，存在即合(he)理！高(gao)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)、低(di)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)本就是為(wei)了(le)滿足不同材(cai)料的(de)復(fu)合(he)要求(qiu)而比(bi)研發推出的(de)，不能單獨討論(lun)是高(gao)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)好，還是低(di)溫(wen)(wen)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)更(geng)好。判(pan)(pan)定哪一種(zhong)類型(xing)的(de)熱(re)(re)熔(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)更(geng)好或者更(geng)合(he)適(shi)，需要根據具(ju)(ju)體的(de)復(fu)合(he)要求(qiu)來測評、判(pan)(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(ke)以(yi)符合性能(neng)需求(qiu)(qiu)。并(bing)且，使用低(di)溫(wen)熱(re)熔膠(jiao)膜可(ke)以(yi)大大降低(di)能(neng)耗，在性能(neng)達到要(yao)求(qiu)(qiu)的基礎上(shang)，盡量(liang)做到節能(neng)環保的，這才是我們所追(zhui)求(qiu)(qiu)的。