一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具(ju)有高溫(wen)低溫(wen)的(de)區(qu)別(bie)，這主要是以熔點為依據來(lai)劃分的(de)。下(xia)面來(lai)介紹下(xia)熱熔膠膜高溫(wen)與低溫(wen)的(de)區(qu)別(bie)。

1、高溫熱熔膠膜類型

高(gao)(gao)(gao)溫(wen)(wen)熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)主要是(shi)指熔(rong)(rong)(rong)點(dian)溫(wen)(wen)度(du)比較(jiao)高(gao)(gao)(gao)的熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)，其實高(gao)(gao)(gao)溫(wen)(wen)類(lei)(lei)型熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)只有(you)高(gao)(gao)(gao)溫(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)，熔(rong)(rong)(rong)點(dian)溫(wen)(wen)度(du)在150℃，使用(yong)溫(wen)(wen)度(du)在180℃左(zuo)右(you)。還有(you)一些中(zhong)高(gao)(gao)(gao)溫(wen)(wen)類(lei)(lei)型熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)，主要包括PA熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)120℃，使用(yong)溫(wen)(wen)度(du)150℃）、PES熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)溫(wen)(wen)度(du)115℃，使用(yong)溫(wen)(wen)度(du)140℃）和PO熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)在110℃，使用(yong)溫(wen)(wen)度(du)140℃左(zuo)右(you)）以及中(zhong)溫(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)(mo)(mo)(mo)(mo)(mo)（熔(rong)(rong)(rong)點(dian)在110℃，使用(yong)溫(wen)(wen)度(du)在140℃）。

2、低溫熱熔膠膜類型

低(di)(di)溫熱熔(rong)(rong)(rong)膠膜(mo)(mo)指的(de)(de)(de)是熔(rong)(rong)(rong)點(dian)溫度低(di)(di)的(de)(de)(de)熱熔(rong)(rong)(rong)膠膜(mo)(mo)，除了中高(gao)溫和高(gao)溫類型(xing)的(de)(de)(de)，其他材質的(de)(de)(de)都(dou)屬于低(di)(di)溫類型(xing)熱熔(rong)(rong)(rong)膠膜(mo)(mo)，主要包括低(di)(di)溫TPU熱熔(rong)(rong)(rong)膠膜(mo)(mo)和EVA熱熔(rong)(rong)(rong)膠膜(mo)(mo)。其中低(di)(di)溫TPU熱熔(rong)(rong)(rong)膠膜(mo)(mo)的(de)(de)(de)熔(rong)(rong)(rong)點(dian)溫度在(zai)70℃，有(you)的(de)(de)(de)型(xing)號可低(di)(di)至(zhi)五(wu)(wu)六十度；而EVA的(de)(de)(de)熱熔(rong)(rong)(rong)膠膜(mo)(mo)熔(rong)(rong)(rong)點(dian)主要是在(zai)70攝氏度，低(di)(di)的(de)(de)(de)型(xing)號可以達到四五(wu)(wu)十度，具(ju)有(you)良(liang)好的(de)(de)(de)耐低(di)(di)溫性(xing)能。

3、高溫與低溫熱熔膠膜的區別

兩者最大的(de)(de)區別(bie)就是熔(rong)點(dian)(dian)不(bu)(bu)同(tong)(tong)，除了熔(rong)點(dian)(dian)的(de)(de)不(bu)(bu)同(tong)(tong)之外，在性(xing)能(neng)和使用范圍上也有所不(bu)(bu)同(tong)(tong)。低(di)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)主(zhu)要是用在一些不(bu)(bu)耐(nai)高(gao)溫(wen)材質的(de)(de)材料(liao)(liao)復合中，而高(gao)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)主(zhu)要應用在有耐(nai)高(gao)溫(wen)要求的(de)(de)領(ling)域。整(zheng)體來說的(de)(de)話，高(gao)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)的(de)(de)粘接性(xing)能(neng)會更好一點(dian)(dian)，但是低(di)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)(mo)可以(yi)更好地保(bao)護材料(liao)(liao)不(bu)(bu)受(shou)到(dao)熱(re)損(sun)傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜的(de)特點是(shi)需(xu)要加熱(re)(re)(re)熔(rong)(rong)化才具(ju)有(you)黏性，冷卻(que)硬化后才具(ju)有(you)粘接強度。高(gao)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜顧名思義，就(jiu)(jiu)是(shi)需(xu)要加熱(re)(re)(re)的(de)溫度高(gao)，相反，低(di)溫熱(re)(re)(re)熔(rong)(rong)膠(jiao)膜也就(jiu)(jiu)是(shi)在低(di)溫條件下(xia)就(jiu)(jiu)可(ke)以加熱(re)(re)(re)熔(rong)(rong)化了。

因為熱熔(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)達到一定(ding)溫(wen)(wen)(wen)度后(hou)就(jiu)會(hui)熔(rong)(rong)化(hua)，熔(rong)(rong)化(hua)后(hou)，即使前期(qi)已經形成良好的(de)粘(zhan)接，也會(hui)再一次失去粘(zhan)接強度。所(suo)以，熱熔(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)的(de)熔(rong)(rong)化(hua)溫(wen)(wen)(wen)度，也就(jiu)是接近(jin)它的(de)一個耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度。超過這個耐(nai)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度，熱熔(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)就(jiu)會(hui)失去粘(zhan)接。所(suo)以，通常情況下(xia)，高溫(wen)(wen)(wen)熱熔(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)的(de)耐(nai)溫(wen)(wen)(wen)性能(neng)也是比較高的(de)，相(xiang)反，低溫(wen)(wen)(wen)熱熔(rong)(rong)膠(jiao)(jiao)(jiao)膜(mo)它的(de)耐(nai)高溫(wen)(wen)(wen)性能(neng)比較差。

值得一提的(de)(de)是，熔化溫(wen)度和實(shi)(shi)際的(de)(de)熱(re)(re)(re)熔膠(jiao)膜(mo)(mo)使用溫(wen)度是不一樣(yang)的(de)(de)。熱(re)(re)(re)熔膠(jiao)膜(mo)(mo)的(de)(de)實(shi)(shi)際使用溫(wen)度通常會比熔化溫(wen)度高幾十度。具體高多少還(huan)需要看熱(re)(re)(re)熔膠(jiao)膜(mo)(mo)本(ben)身的(de)(de)熔指等(deng)其(qi)它特(te)性，為的(de)(de)是使得熱(re)(re)(re)熔膠(jiao)膜(mo)(mo)在(zai)更短(duan)的(de)(de)時間內(nei)可以(yi)熔化。

通過上面的(de)(de)(de)說(shuo)(shuo)明，我們似乎感覺到高(gao)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)具有更(geng)好的(de)(de)(de)性能(neng)優(you)勢，能(neng)復合要求更(geng)高(gao)的(de)(de)(de)場(chang)合，但實際(ji)上并不是這樣。選擇高(gao)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)還是低(di)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)是由復合的(de)(de)(de)材(cai)料類型(xing)決定的(de)(de)(de)。俗(su)話(hua)說(shuo)(shuo)，存在即合理！高(gao)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)、低(di)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)本(ben)就是為了(le)滿(man)足不同材(cai)料的(de)(de)(de)復合要求而比(bi)研發推出(chu)的(de)(de)(de)，不能(neng)單獨討(tao)論是高(gao)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)好，還是低(di)溫熱(re)(re)熔(rong)膠(jiao)膜(mo)更(geng)好。判定哪一種類型(xing)的(de)(de)(de)熱(re)(re)熔(rong)膠(jiao)膜(mo)更(geng)好或者更(geng)合適，需要根據具體的(de)(de)(de)復合要求來(lai)測(ce)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(jiu)可以(yi)符合性能(neng)(neng)(neng)需(xu)求。并且，使用(yong)低溫(wen)熱熔膠膜可以(yi)大大降(jiang)低能(neng)(neng)(neng)耗，在性能(neng)(neng)(neng)達到要(yao)求的基(ji)礎上，盡量做(zuo)到節能(neng)(neng)(neng)環保的，這(zhe)才(cai)是我們所追(zhui)求的。