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(wen)低溫(wen)的區別，這主要是以熔(rong)點(dian)為依據來劃分的。下面來介紹下熱熔(rong)膠膜高溫(wen)與低溫(wen)的區別。

1、高溫熱熔膠膜類型

高溫(wen)(wen)(wen)熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)主要(yao)是指熔(rong)(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度(du)比較(jiao)高的熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)，其實高溫(wen)(wen)(wen)類(lei)型熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)只(zhi)有高溫(wen)(wen)(wen)TPU熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)，熔(rong)(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度(du)在150℃，使(shi)用(yong)溫(wen)(wen)(wen)度(du)在180℃左右。還有一些(xie)中高溫(wen)(wen)(wen)類(lei)型熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)，主要(yao)包括PA熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)點(dian)(dian)120℃，使(shi)用(yong)溫(wen)(wen)(wen)度(du)150℃）、PES熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)度(du)115℃，使(shi)用(yong)溫(wen)(wen)(wen)度(du)140℃）和PO熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)點(dian)(dian)在110℃，使(shi)用(yong)溫(wen)(wen)(wen)度(du)140℃左右）以及中溫(wen)(wen)(wen)TPU熱(re)(re)(re)熔(rong)(rong)(rong)(rong)(rong)膠膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)點(dian)(dian)在110℃，使(shi)用(yong)溫(wen)(wen)(wen)度(du)在140℃）。

2、低溫熱熔膠膜類型

低溫(wen)(wen)(wen)熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)指的(de)(de)(de)是熔(rong)(rong)點溫(wen)(wen)(wen)度(du)低的(de)(de)(de)熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)，除了中高(gao)溫(wen)(wen)(wen)和(he)高(gao)溫(wen)(wen)(wen)類型(xing)的(de)(de)(de)，其他材質(zhi)的(de)(de)(de)都屬于(yu)低溫(wen)(wen)(wen)類型(xing)熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)，主要包括低溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)和(he)EVA熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)。其中低溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)熔(rong)(rong)點溫(wen)(wen)(wen)度(du)在(zai)70℃，有的(de)(de)(de)型(xing)號可(ke)低至五(wu)六(liu)十度(du)；而EVA的(de)(de)(de)熱(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)(mo)(mo)(mo)熔(rong)(rong)點主要是在(zai)70攝氏度(du)，低的(de)(de)(de)型(xing)號可(ke)以達到四五(wu)十度(du)，具有良好(hao)的(de)(de)(de)耐低溫(wen)(wen)(wen)性能(neng)。

3、高溫與低溫熱熔膠膜的區別

兩者最(zui)大的(de)區(qu)別就是熔(rong)點(dian)不(bu)同(tong)，除了(le)熔(rong)點(dian)的(de)不(bu)同(tong)之外，在(zai)性(xing)能(neng)和使用(yong)范圍上(shang)也有(you)所不(bu)同(tong)。低(di)溫(wen)熱(re)(re)(re)熔(rong)膠膜主要(yao)是用(yong)在(zai)一些不(bu)耐高(gao)溫(wen)材質的(de)材料(liao)復合(he)中，而高(gao)溫(wen)熱(re)(re)(re)熔(rong)膠膜主要(yao)應用(yong)在(zai)有(you)耐高(gao)溫(wen)要(yao)求的(de)領域。整體來說的(de)話，高(gao)溫(wen)熱(re)(re)(re)熔(rong)膠膜的(de)粘(zhan)接(jie)性(xing)能(neng)會(hui)更好一點(dian)，但是低(di)溫(wen)熱(re)(re)(re)熔(rong)膠膜可以更好地保護(hu)材料(liao)不(bu)受到熱(re)(re)(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)熔(rong)(rong)(rong)膠膜的特(te)點是需要(yao)加(jia)熱(re)熔(rong)(rong)(rong)化(hua)才具有黏性，冷卻硬(ying)化(hua)后才具有粘(zhan)接強度。高溫(wen)(wen)熱(re)熔(rong)(rong)(rong)膠膜顧名(ming)思義，就(jiu)是需要(yao)加(jia)熱(re)的溫(wen)(wen)度高，相反，低溫(wen)(wen)熱(re)熔(rong)(rong)(rong)膠膜也就(jiu)是在低溫(wen)(wen)條件下就(jiu)可以加(jia)熱(re)熔(rong)(rong)(rong)化(hua)了。

因(yin)為熱熔(rong)(rong)膠膜(mo)(mo)達(da)到一定(ding)溫(wen)度(du)后(hou)就會(hui)熔(rong)(rong)化(hua)，熔(rong)(rong)化(hua)后(hou)，即使前期已經形成良(liang)好的(de)(de)粘(zhan)接(jie)(jie)，也會(hui)再一次失去粘(zhan)接(jie)(jie)強(qiang)度(du)。所(suo)以，熱熔(rong)(rong)膠膜(mo)(mo)的(de)(de)熔(rong)(rong)化(hua)溫(wen)度(du)，也就是(shi)接(jie)(jie)近它(ta)的(de)(de)一個(ge)耐(nai)(nai)溫(wen)溫(wen)度(du)。超過(guo)這個(ge)耐(nai)(nai)溫(wen)溫(wen)度(du)，熱熔(rong)(rong)膠膜(mo)(mo)就會(hui)失去粘(zhan)接(jie)(jie)。所(suo)以，通常情況下，高(gao)溫(wen)熱熔(rong)(rong)膠膜(mo)(mo)的(de)(de)耐(nai)(nai)溫(wen)性能(neng)也是(shi)比較高(gao)的(de)(de)，相(xiang)反，低溫(wen)熱熔(rong)(rong)膠膜(mo)(mo)它(ta)的(de)(de)耐(nai)(nai)高(gao)溫(wen)性能(neng)比較差。

值得一(yi)提的(de)是(shi)，熔化(hua)溫度和(he)實際(ji)的(de)熱(re)熔膠(jiao)(jiao)膜(mo)使用溫度是(shi)不(bu)一(yi)樣(yang)的(de)。熱(re)熔膠(jiao)(jiao)膜(mo)的(de)實際(ji)使用溫度通常會比熔化(hua)溫度高幾十度。具體高多(duo)少還(huan)需要(yao)看(kan)熱(re)熔膠(jiao)(jiao)膜(mo)本(ben)身的(de)熔指等其它特性，為的(de)是(shi)使得熱(re)熔膠(jiao)(jiao)膜(mo)在更短(duan)的(de)時(shi)間內可以(yi)熔化(hua)。

通過上面的(de)(de)說明，我們似(si)乎感(gan)覺到高溫熱熔(rong)(rong)膠(jiao)膜(mo)具(ju)有更好(hao)的(de)(de)性能(neng)優勢，能(neng)復(fu)(fu)合(he)要求(qiu)更高的(de)(de)場(chang)合(he)，但實際(ji)上并(bing)不是(shi)這樣。選擇高溫熱熔(rong)(rong)膠(jiao)膜(mo)還(huan)是(shi)低(di)(di)溫熱熔(rong)(rong)膠(jiao)膜(mo)是(shi)由復(fu)(fu)合(he)的(de)(de)材料(liao)類型決定的(de)(de)。俗話說，存(cun)在即合(he)理！高溫熱熔(rong)(rong)膠(jiao)膜(mo)、低(di)(di)溫熱熔(rong)(rong)膠(jiao)膜(mo)本就是(shi)為了滿(man)足不同材料(liao)的(de)(de)復(fu)(fu)合(he)要求(qiu)而比(bi)研發推出的(de)(de)，不能(neng)單(dan)獨(du)討論是(shi)高溫熱熔(rong)(rong)膠(jiao)膜(mo)好(hao)，還(huan)是(shi)低(di)(di)溫熱熔(rong)(rong)膠(jiao)膜(mo)更好(hao)。判定哪(na)一種類型的(de)(de)熱熔(rong)(rong)膠(jiao)膜(mo)更好(hao)或者更合(he)適(shi)，需要根(gen)據具(ju)體的(de)(de)復(fu)(fu)合(he)要求(qiu)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可以符合性能(neng)需求(qiu)。并且，使用(yong)低(di)溫熱熔(rong)膠膜可以大(da)大(da)降低(di)能(neng)耗，在性能(neng)達到(dao)(dao)要求(qiu)的基(ji)礎上，盡(jin)量做到(dao)(dao)節能(neng)環保的，這才是我們所(suo)追求(qiu)的。