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)(wen)低溫(wen)(wen)的(de)區別(bie)(bie)，這主要是以熔點為依(yi)據來劃分的(de)。下(xia)面來介紹(shao)下(xia)熱熔膠膜高溫(wen)(wen)與低溫(wen)(wen)的(de)區別(bie)(bie)。

1、高溫熱熔膠膜類型

高(gao)(gao)溫(wen)(wen)(wen)(wen)熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)主要(yao)是指熔(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)(wen)度(du)(du)(du)比較(jiao)高(gao)(gao)的熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，其實高(gao)(gao)溫(wen)(wen)(wen)(wen)類型熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)只有高(gao)(gao)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，熔(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)(wen)度(du)(du)(du)在(zai)(zai)150℃，使用溫(wen)(wen)(wen)(wen)度(du)(du)(du)在(zai)(zai)180℃左(zuo)右。還有一(yi)些中高(gao)(gao)溫(wen)(wen)(wen)(wen)類型熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)，主要(yao)包括PA熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點(dian)(dian)120℃，使用溫(wen)(wen)(wen)(wen)度(du)(du)(du)150℃）、PES熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點(dian)(dian)溫(wen)(wen)(wen)(wen)度(du)(du)(du)115℃，使用溫(wen)(wen)(wen)(wen)度(du)(du)(du)140℃）和PO熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點(dian)(dian)在(zai)(zai)110℃，使用溫(wen)(wen)(wen)(wen)度(du)(du)(du)140℃左(zuo)右）以(yi)及中溫(wen)(wen)(wen)(wen)TPU熱(re)(re)(re)(re)(re)熔(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)點(dian)(dian)在(zai)(zai)110℃，使用溫(wen)(wen)(wen)(wen)度(du)(du)(du)在(zai)(zai)140℃）。

2、低溫熱熔膠膜類型

低溫(wen)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)指的(de)是熔(rong)(rong)(rong)點(dian)(dian)溫(wen)度低的(de)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，除了(le)中高(gao)溫(wen)和高(gao)溫(wen)類型(xing)(xing)的(de)，其他(ta)材質的(de)都(dou)屬于低溫(wen)類型(xing)(xing)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)，主要包括低溫(wen)TPU熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)和EVA熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)。其中低溫(wen)TPU熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)的(de)熔(rong)(rong)(rong)點(dian)(dian)溫(wen)度在70℃，有的(de)型(xing)(xing)號可低至五(wu)六十(shi)度；而EVA的(de)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)膜(mo)(mo)熔(rong)(rong)(rong)點(dian)(dian)主要是在70攝氏度，低的(de)型(xing)(xing)號可以達到四(si)五(wu)十(shi)度，具有良好(hao)的(de)耐低溫(wen)性(xing)能。

3、高溫與低溫熱熔膠膜的區別

兩者最(zui)大的區別(bie)就是(shi)熔(rong)點(dian)不(bu)同(tong)(tong)，除了熔(rong)點(dian)的不(bu)同(tong)(tong)之外(wai)，在(zai)(zai)性能和使用(yong)(yong)范圍上(shang)也有(you)所不(bu)同(tong)(tong)。低溫熱熔(rong)膠(jiao)(jiao)膜(mo)主(zhu)要(yao)是(shi)用(yong)(yong)在(zai)(zai)一些不(bu)耐(nai)高溫材(cai)質的材(cai)料(liao)復合(he)中，而高溫熱熔(rong)膠(jiao)(jiao)膜(mo)主(zhu)要(yao)應用(yong)(yong)在(zai)(zai)有(you)耐(nai)高溫要(yao)求的領域。整體來說的話，高溫熱熔(rong)膠(jiao)(jiao)膜(mo)的粘接性能會更好一點(dian)，但是(shi)低溫熱熔(rong)膠(jiao)(jiao)膜(mo)可以更好地保護材(cai)料(liao)不(bu)受到熱損(sun)傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)(re)熔膠膜(mo)的(de)特點是(shi)需要加熱(re)(re)熔化(hua)才具有黏性(xing)，冷卻硬化(hua)后才具有粘接強度。高溫(wen)熱(re)(re)熔膠膜(mo)顧(gu)名思義，就是(shi)需要加熱(re)(re)的(de)溫(wen)度高，相反，低溫(wen)熱(re)(re)熔膠膜(mo)也就是(shi)在低溫(wen)條件下就可以加熱(re)(re)熔化(hua)了。

因為熱熔(rong)膠(jiao)(jiao)(jiao)膜達到(dao)一(yi)定溫(wen)(wen)度后(hou)就(jiu)(jiu)會(hui)熔(rong)化(hua)，熔(rong)化(hua)后(hou)，即使前期已(yi)經形成良好的(de)(de)(de)(de)粘接(jie)，也會(hui)再一(yi)次失去(qu)粘接(jie)強(qiang)度。所以，熱熔(rong)膠(jiao)(jiao)(jiao)膜的(de)(de)(de)(de)熔(rong)化(hua)溫(wen)(wen)度，也就(jiu)(jiu)是接(jie)近它的(de)(de)(de)(de)一(yi)個耐(nai)(nai)(nai)溫(wen)(wen)溫(wen)(wen)度。超過這個耐(nai)(nai)(nai)溫(wen)(wen)溫(wen)(wen)度，熱熔(rong)膠(jiao)(jiao)(jiao)膜就(jiu)(jiu)會(hui)失去(qu)粘接(jie)。所以，通(tong)常情況下，高溫(wen)(wen)熱熔(rong)膠(jiao)(jiao)(jiao)膜的(de)(de)(de)(de)耐(nai)(nai)(nai)溫(wen)(wen)性能(neng)也是比較高的(de)(de)(de)(de)，相反(fan)，低溫(wen)(wen)熱熔(rong)膠(jiao)(jiao)(jiao)膜它的(de)(de)(de)(de)耐(nai)(nai)(nai)高溫(wen)(wen)性能(neng)比較差。

值得(de)一(yi)提的是(shi)(shi)，熔(rong)(rong)化溫度(du)(du)和實際的熱熔(rong)(rong)膠膜使用(yong)溫度(du)(du)是(shi)(shi)不一(yi)樣的。熱熔(rong)(rong)膠膜的實際使用(yong)溫度(du)(du)通常會比(bi)熔(rong)(rong)化溫度(du)(du)高(gao)幾十度(du)(du)。具體高(gao)多(duo)少還(huan)需要看熱熔(rong)(rong)膠膜本身的熔(rong)(rong)指等其它(ta)特(te)性，為的是(shi)(shi)使得(de)熱熔(rong)(rong)膠膜在更短的時間內可(ke)以熔(rong)(rong)化。

通過(guo)上(shang)面的(de)(de)說(shuo)明，我們似(si)乎(hu)感(gan)覺到(dao)高溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)具有(you)更(geng)(geng)好(hao)的(de)(de)性能(neng)(neng)(neng)優勢，能(neng)(neng)(neng)復合要(yao)(yao)求(qiu)(qiu)更(geng)(geng)高的(de)(de)場(chang)合，但實際上(shang)并(bing)不是(shi)(shi)這樣。選擇高溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)還(huan)(huan)是(shi)(shi)低溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)是(shi)(shi)由復合的(de)(de)材料(liao)類(lei)型決定(ding)的(de)(de)。俗(su)話說(shuo)，存在即合理！高溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)、低溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)本就是(shi)(shi)為了滿足不同材料(liao)的(de)(de)復合要(yao)(yao)求(qiu)(qiu)而比研(yan)發推出的(de)(de)，不能(neng)(neng)(neng)單獨(du)討論是(shi)(shi)高溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)好(hao)，還(huan)(huan)是(shi)(shi)低溫(wen)(wen)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)更(geng)(geng)好(hao)。判(pan)定(ding)哪(na)一種(zhong)類(lei)型的(de)(de)熱(re)(re)熔(rong)(rong)膠(jiao)膜(mo)(mo)更(geng)(geng)好(hao)或者更(geng)(geng)合適，需要(yao)(yao)根據具體的(de)(de)復合要(yao)(yao)求(qiu)(qiu)來測(ce)評(ping)、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可(ke)以符(fu)合性能需求。并且，使用(yong)低溫熱熔(rong)膠膜可(ke)以大(da)大(da)降低能耗，在性能達到(dao)要求的基礎上，盡量(liang)做到(dao)節能環保(bao)的，這(zhe)才是我們所追求的。