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)溫低(di)溫的區別，這主要是(shi)以(yi)熔點為依據來(lai)劃(hua)分(fen)的。下(xia)面來(lai)介紹下(xia)熱熔膠膜(mo)高(gao)溫與低(di)溫的區別。

1、高溫熱熔膠膜類型

高溫(wen)(wen)(wen)(wen)(wen)熱(re)(re)(re)(re)熔膠膜主要(yao)是(shi)指(zhi)熔點(dian)(dian)溫(wen)(wen)(wen)(wen)(wen)度比較高的(de)熱(re)(re)(re)(re)熔膠膜，其實高溫(wen)(wen)(wen)(wen)(wen)類型(xing)熱(re)(re)(re)(re)熔膠膜只有高溫(wen)(wen)(wen)(wen)(wen)TPU熱(re)(re)(re)(re)熔膠膜，熔點(dian)(dian)溫(wen)(wen)(wen)(wen)(wen)度在(zai)(zai)150℃，使(shi)用溫(wen)(wen)(wen)(wen)(wen)度在(zai)(zai)180℃左(zuo)右。還有一些(xie)中高溫(wen)(wen)(wen)(wen)(wen)類型(xing)熱(re)(re)(re)(re)熔膠膜，主要(yao)包(bao)括PA熱(re)(re)(re)(re)熔膠膜（熔點(dian)(dian)120℃，使(shi)用溫(wen)(wen)(wen)(wen)(wen)度150℃）、PES熱(re)(re)(re)(re)熔膠膜（熔點(dian)(dian)溫(wen)(wen)(wen)(wen)(wen)度115℃，使(shi)用溫(wen)(wen)(wen)(wen)(wen)度140℃）和PO熱(re)(re)(re)(re)熔膠膜（熔點(dian)(dian)在(zai)(zai)110℃，使(shi)用溫(wen)(wen)(wen)(wen)(wen)度140℃左(zuo)右）以及中溫(wen)(wen)(wen)(wen)(wen)TPU熱(re)(re)(re)(re)熔膠膜（熔點(dian)(dian)在(zai)(zai)110℃，使(shi)用溫(wen)(wen)(wen)(wen)(wen)度在(zai)(zai)140℃）。

2、低溫熱熔膠膜類型

低(di)(di)(di)溫(wen)(wen)(wen)熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)指的(de)(de)(de)(de)是熔(rong)(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)度低(di)(di)(di)的(de)(de)(de)(de)熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，除了中(zhong)高溫(wen)(wen)(wen)和高溫(wen)(wen)(wen)類型(xing)的(de)(de)(de)(de)，其(qi)他(ta)材(cai)質的(de)(de)(de)(de)都屬于(yu)低(di)(di)(di)溫(wen)(wen)(wen)類型(xing)熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，主(zhu)要包括低(di)(di)(di)溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)和EVA熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)。其(qi)中(zhong)低(di)(di)(di)溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)的(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)度在(zai)70℃，有(you)的(de)(de)(de)(de)型(xing)號(hao)可低(di)(di)(di)至(zhi)五六十度；而EVA的(de)(de)(de)(de)熱(re)熔(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)熔(rong)(rong)(rong)(rong)點(dian)主(zhu)要是在(zai)70攝氏度，低(di)(di)(di)的(de)(de)(de)(de)型(xing)號(hao)可以達到(dao)四五十度，具有(you)良好的(de)(de)(de)(de)耐低(di)(di)(di)溫(wen)(wen)(wen)性(xing)能。

3、高溫與低溫熱熔膠膜的區別

兩者(zhe)最大(da)的(de)區別就是熔(rong)(rong)點(dian)不(bu)同(tong)(tong)，除了熔(rong)(rong)點(dian)的(de)不(bu)同(tong)(tong)之外，在(zai)(zai)性(xing)能和使(shi)用(yong)范圍上也有(you)所不(bu)同(tong)(tong)。低溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)主要是用(yong)在(zai)(zai)一(yi)些(xie)不(bu)耐高溫(wen)(wen)材(cai)(cai)質(zhi)的(de)材(cai)(cai)料復合中，而高溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)主要應用(yong)在(zai)(zai)有(you)耐高溫(wen)(wen)要求的(de)領域。整體來說的(de)話，高溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)的(de)粘(zhan)接(jie)性(xing)能會(hui)更好一(yi)點(dian)，但(dan)是低溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)可以更好地保(bao)護(hu)材(cai)(cai)料不(bu)受(shou)到(dao)熱(re)(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱熔(rong)膠(jiao)膜(mo)的(de)特點是需要(yao)加(jia)熱熔(rong)化才(cai)具(ju)有黏性，冷卻(que)硬化后才(cai)具(ju)有粘接強度。高溫熱熔(rong)膠(jiao)膜(mo)顧名思義(yi)，就(jiu)是需要(yao)加(jia)熱的(de)溫度高，相反，低(di)溫熱熔(rong)膠(jiao)膜(mo)也就(jiu)是在(zai)低(di)溫條件(jian)下就(jiu)可以加(jia)熱熔(rong)化了。

因為熱熔(rong)膠(jiao)膜達(da)到一定溫(wen)(wen)度(du)(du)后就(jiu)會熔(rong)化(hua)(hua)，熔(rong)化(hua)(hua)后，即使前期已經(jing)形成(cheng)良好(hao)的(de)(de)粘接(jie)，也會再一次失去粘接(jie)強(qiang)度(du)(du)。所以(yi)，熱熔(rong)膠(jiao)膜的(de)(de)熔(rong)化(hua)(hua)溫(wen)(wen)度(du)(du)，也就(jiu)是接(jie)近它的(de)(de)一個耐(nai)溫(wen)(wen)溫(wen)(wen)度(du)(du)。超過這個耐(nai)溫(wen)(wen)溫(wen)(wen)度(du)(du)，熱熔(rong)膠(jiao)膜就(jiu)會失去粘接(jie)。所以(yi)，通(tong)常情況下，高溫(wen)(wen)熱熔(rong)膠(jiao)膜的(de)(de)耐(nai)溫(wen)(wen)性能(neng)也是比(bi)較高的(de)(de)，相(xiang)反，低溫(wen)(wen)熱熔(rong)膠(jiao)膜它的(de)(de)耐(nai)高溫(wen)(wen)性能(neng)比(bi)較差。

值(zhi)得(de)一提的是(shi)，熔化(hua)溫(wen)(wen)(wen)度(du)和實際的熱熔膠(jiao)(jiao)膜(mo)(mo)使用溫(wen)(wen)(wen)度(du)是(shi)不一樣的。熱熔膠(jiao)(jiao)膜(mo)(mo)的實際使用溫(wen)(wen)(wen)度(du)通(tong)常(chang)會比(bi)熔化(hua)溫(wen)(wen)(wen)度(du)高(gao)幾(ji)十度(du)。具體(ti)高(gao)多少(shao)還需要(yao)看熱熔膠(jiao)(jiao)膜(mo)(mo)本身的熔指等其(qi)它(ta)特性，為的是(shi)使得(de)熱熔膠(jiao)(jiao)膜(mo)(mo)在更短(duan)的時間內可以(yi)熔化(hua)。

通過上面的(de)(de)說明，我們似乎感覺到(dao)高(gao)(gao)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜具有(you)更(geng)(geng)(geng)好(hao)的(de)(de)性能優勢，能復合(he)要求更(geng)(geng)(geng)高(gao)(gao)的(de)(de)場合(he)，但實際(ji)上并(bing)不(bu)是(shi)這樣。選擇高(gao)(gao)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜還(huan)是(shi)低(di)(di)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜是(shi)由復合(he)的(de)(de)材(cai)(cai)料類(lei)型決定(ding)(ding)的(de)(de)。俗話說，存在即合(he)理！高(gao)(gao)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜、低(di)(di)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜本(ben)就(jiu)是(shi)為了滿足(zu)不(bu)同(tong)材(cai)(cai)料的(de)(de)復合(he)要求而比研發推出(chu)的(de)(de)，不(bu)能單獨討論(lun)是(shi)高(gao)(gao)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜好(hao)，還(huan)是(shi)低(di)(di)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜更(geng)(geng)(geng)好(hao)。判定(ding)(ding)哪一種類(lei)型的(de)(de)熱(re)(re)(re)熔(rong)(rong)膠(jiao)(jiao)(jiao)膜更(geng)(geng)(geng)好(hao)或者更(geng)(geng)(geng)合(he)適，需要根據(ju)具體的(de)(de)復合(he)要求來測評、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可以(yi)符(fu)合性能(neng)需求(qiu)。并且，使用低溫熱熔膠膜可以(yi)大(da)大(da)降(jiang)低能(neng)耗，在性能(neng)達到要求(qiu)的(de)基礎(chu)上，盡量做到節能(neng)環(huan)保(bao)的(de)，這才是我們(men)所追求(qiu)的(de)。