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溫的(de)區別(bie)，這主(zhu)要是以熔(rong)(rong)點為依(yi)據來(lai)劃分的(de)。下面(mian)來(lai)介紹下熱熔(rong)(rong)膠膜高溫與低溫的(de)區別(bie)。

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(jiao)(jiao)膜(mo)(mo)主(zhu)要(yao)是指熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)(dian)溫(wen)(wen)(wen)度(du)(du)(du)比較高(gao)的熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，其實高(gao)溫(wen)(wen)(wen)類型(xing)熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)只有(you)高(gao)溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)(dian)溫(wen)(wen)(wen)度(du)(du)(du)在(zai)(zai)(zai)150℃，使(shi)用溫(wen)(wen)(wen)度(du)(du)(du)在(zai)(zai)(zai)180℃左(zuo)右。還有(you)一些(xie)中高(gao)溫(wen)(wen)(wen)類型(xing)熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，主(zhu)要(yao)包(bao)括PA熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)(dian)120℃，使(shi)用溫(wen)(wen)(wen)度(du)(du)(du)150℃）、PES熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)(dian)溫(wen)(wen)(wen)度(du)(du)(du)115℃，使(shi)用溫(wen)(wen)(wen)度(du)(du)(du)140℃）和(he)PO熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)(dian)在(zai)(zai)(zai)110℃，使(shi)用溫(wen)(wen)(wen)度(du)(du)(du)140℃左(zuo)右）以及中溫(wen)(wen)(wen)TPU熱(re)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)點(dian)(dian)(dian)在(zai)(zai)(zai)110℃，使(shi)用溫(wen)(wen)(wen)度(du)(du)(du)在(zai)(zai)(zai)140℃）。

2、低溫熱熔膠膜類型

低溫(wen)(wen)(wen)熱(re)(re)(re)熔(rong)(rong)膠膜指的是(shi)熔(rong)(rong)點溫(wen)(wen)(wen)度(du)低的熱(re)(re)(re)熔(rong)(rong)膠膜，除了中高溫(wen)(wen)(wen)和高溫(wen)(wen)(wen)類型(xing)的，其他材質的都(dou)屬于低溫(wen)(wen)(wen)類型(xing)熱(re)(re)(re)熔(rong)(rong)膠膜，主要包括低溫(wen)(wen)(wen)TPU熱(re)(re)(re)熔(rong)(rong)膠膜和EVA熱(re)(re)(re)熔(rong)(rong)膠膜。其中低溫(wen)(wen)(wen)TPU熱(re)(re)(re)熔(rong)(rong)膠膜的熔(rong)(rong)點溫(wen)(wen)(wen)度(du)在70℃，有的型(xing)號可低至五(wu)六十度(du)；而EVA的熱(re)(re)(re)熔(rong)(rong)膠膜熔(rong)(rong)點主要是(shi)在70攝氏度(du)，低的型(xing)號可以達到四(si)五(wu)十度(du)，具有良好的耐低溫(wen)(wen)(wen)性能。

3、高溫與低溫熱熔膠膜的區別

兩者最大的區(qu)別就是(shi)熔(rong)(rong)點(dian)不同，除(chu)了熔(rong)(rong)點(dian)的不同之外，在性(xing)能(neng)(neng)和(he)使用范圍上也有(you)所不同。低溫(wen)熱(re)(re)熔(rong)(rong)膠膜(mo)主(zhu)要是(shi)用在一些不耐高(gao)溫(wen)材(cai)(cai)質的材(cai)(cai)料復合中，而高(gao)溫(wen)熱(re)(re)熔(rong)(rong)膠膜(mo)主(zhu)要應用在有(you)耐高(gao)溫(wen)要求(qiu)的領(ling)域。整體來說(shuo)的話，高(gao)溫(wen)熱(re)(re)熔(rong)(rong)膠膜(mo)的粘接性(xing)能(neng)(neng)會更好一點(dian)，但是(shi)低溫(wen)熱(re)(re)熔(rong)(rong)膠膜(mo)可以更好地(di)保(bao)護材(cai)(cai)料不受(shou)到(dao)熱(re)(re)損傷。

二、熱熔膠膜高溫好還是低溫好

熱(re)熔(rong)(rong)膠膜(mo)的(de)特點是(shi)(shi)需要加熱(re)熔(rong)(rong)化(hua)(hua)才(cai)具(ju)有(you)黏(nian)性，冷卻(que)硬化(hua)(hua)后才(cai)具(ju)有(you)粘接強(qiang)度。高溫熱(re)熔(rong)(rong)膠膜(mo)顧(gu)名思義，就(jiu)(jiu)是(shi)(shi)需要加熱(re)的(de)溫度高，相反，低溫熱(re)熔(rong)(rong)膠膜(mo)也就(jiu)(jiu)是(shi)(shi)在低溫條件下就(jiu)(jiu)可以(yi)加熱(re)熔(rong)(rong)化(hua)(hua)了。

因為熱熔(rong)(rong)(rong)(rong)膠膜(mo)(mo)達到一定溫(wen)(wen)度后(hou)就(jiu)會熔(rong)(rong)(rong)(rong)化，熔(rong)(rong)(rong)(rong)化后(hou)，即使前期已經形成(cheng)良好的(de)粘接(jie)，也會再一次失去粘接(jie)強度。所以，熱熔(rong)(rong)(rong)(rong)膠膜(mo)(mo)的(de)熔(rong)(rong)(rong)(rong)化溫(wen)(wen)度，也就(jiu)是接(jie)近它的(de)一個耐(nai)溫(wen)(wen)溫(wen)(wen)度。超過這(zhe)個耐(nai)溫(wen)(wen)溫(wen)(wen)度，熱熔(rong)(rong)(rong)(rong)膠膜(mo)(mo)就(jiu)會失去粘接(jie)。所以，通常情況下，高(gao)(gao)溫(wen)(wen)熱熔(rong)(rong)(rong)(rong)膠膜(mo)(mo)的(de)耐(nai)溫(wen)(wen)性(xing)能也是比(bi)較高(gao)(gao)的(de)，相反，低溫(wen)(wen)熱熔(rong)(rong)(rong)(rong)膠膜(mo)(mo)它的(de)耐(nai)高(gao)(gao)溫(wen)(wen)性(xing)能比(bi)較差。

值(zhi)得一提(ti)的(de)是，熔(rong)化(hua)溫度和實(shi)際(ji)的(de)熱熔(rong)膠(jiao)(jiao)膜(mo)(mo)使用(yong)溫度是不一樣的(de)。熱熔(rong)膠(jiao)(jiao)膜(mo)(mo)的(de)實(shi)際(ji)使用(yong)溫度通常會(hui)比熔(rong)化(hua)溫度高(gao)幾十度。具體高(gao)多少還需要看熱熔(rong)膠(jiao)(jiao)膜(mo)(mo)本身的(de)熔(rong)指等其它特性，為的(de)是使得熱熔(rong)膠(jiao)(jiao)膜(mo)(mo)在更短的(de)時間(jian)內可以熔(rong)化(hua)。

通過上面的(de)(de)說明，我們似乎(hu)感覺到高(gao)溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)具(ju)有(you)更(geng)好的(de)(de)性能(neng)優勢，能(neng)復(fu)合(he)(he)要求(qiu)更(geng)高(gao)的(de)(de)場合(he)(he)，但實際上并不是(shi)(shi)這樣(yang)。選擇高(gao)溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)還(huan)是(shi)(shi)低溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)是(shi)(shi)由(you)復(fu)合(he)(he)的(de)(de)材料類型決定的(de)(de)。俗話(hua)說，存在(zai)即合(he)(he)理！高(gao)溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)、低溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)本就是(shi)(shi)為了滿(man)足不同材料的(de)(de)復(fu)合(he)(he)要求(qiu)而比(bi)研(yan)發推出的(de)(de)，不能(neng)單獨討論是(shi)(shi)高(gao)溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)好，還(huan)是(shi)(shi)低溫(wen)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)更(geng)好。判(pan)定哪(na)一種類型的(de)(de)熱(re)(re)(re)熔(rong)膠(jiao)(jiao)(jiao)膜(mo)更(geng)好或者(zhe)更(geng)合(he)(he)適，需(xu)要根據(ju)具(ju)體的(de)(de)復(fu)合(he)(he)要求(qiu)來測(ce)評、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以(yi)符合性(xing)能(neng)需求(qiu)。并且(qie)，使(shi)用(yong)低溫熱熔膠膜可以(yi)大(da)大(da)降低能(neng)耗(hao)，在性(xing)能(neng)達到要求(qiu)的(de)基礎(chu)上，盡量(liang)做到節能(neng)環保(bao)的(de)，這(zhe)才是我(wo)們(men)所(suo)追(zhui)求(qiu)的(de)。