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PUR熱(re)熔膠不(bu)拉如何做到(dao)的？
PUR是一(yi)(yi)種單(dan)液(ye)熱敏固(gu)化(hua)型(xing)結構膠(jiao),該(gai)產(chan)品常溫下為粘(zhan)稠液(ye)物體(ti).65℃-85℃條件下釋放固(gu)化(hua)劑迅速(su)具(ju)有(you)較高初粘(zhan)強(qiang)度,24H后(hou)具(ju)有(you)最好強(qiang)度。用于手機、柔性(xing)曲面(mian)屏手機中框粘(zhan)接(jie)。具(ju)有(you)優良的(de)(de)粘(zhan)接(jie)性(xing)能，通過各項測(ce)試。并具(ju)備易拆解性(xing)，不(bu)損壞物料。PUR熱熔(rong)膠(jiao)在生(sheng)產(chan)應用中，常有(you)出現(xian)拉絲(si)的(de)(de)情況，但這并不(bu)是膠(jiao)水有(you)什么問題(ti)。PUR作為一(yi)(yi)種熱熔(rong)膠(jiao)，熔(rong)化(hua)后(hou)的(de)(de)粘(zhan)稠度決定斷(duan)膠(jiao)時不(bu)可(ke)能不(bu)產(chan)生(sheng)拉絲(si)的(de)(de)情況，那(nei)么pur熱熔(rong)膠(jiao)拉絲(si)的(de)(de)原因有(you)
2020-04-29 史輝 176
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PUR熱(re)熔(rong)膠與(yu)常(chang)規熱(re)熔(rong)膠對比(bi)
PUR 膠(jiao)(jiao)(jiao)特性對(dui)比 熱熔(rong)(rong)型(xing)膠(jiao)(jiao)(jiao)粘劑在(zai)室(shi)溫(wen)下是固(gu)體，加(jia)(jia)熱到一(yi)定溫(wen)度就(jiu)(jiu)熔(rong)(rong)融成粘稠的液體，冷卻到室(shi)溫(wen)后(hou)又(you)變(bian)成固(gu)體，并有(you)很強(qiang)的粘接作用(yong)，因此人們把它稱(cheng)為熱熔(rong)(rong)型(xing)膠(jiao)(jiao)(jiao)粘劑，簡稱(cheng)熱熔(rong)(rong)膠(jiao)(jiao)(jiao)。 PUR熱熔(rong)(rong)膠(jiao)(jiao)(jiao)與熱熔(rong)(rong)膠(jiao)(jiao)(jiao)的主要區別(bie)在(zai)于，普(pu)通熱熔(rong)(rong)膠(jiao)(jiao)(jiao)冷卻至(zhi)室(shi)溫(wen)后(hou)變(bian)成固(gu)體，但加(jia)(jia)溫(wen)到一(yi)定溫(wen)度它又(you)熔(rong)(rong)融變(bian)液體了。而PUR熱熔(rong)(rong)膠(jiao)(jiao)(jiao)冷卻至(zhi)室(shi)溫(wen)后(hou)變(bian)成固(gu)體的同(tong)時又(you)與空氣(qi)中(zhong)的濕氣(qi)水分子反(fan)應，在(zai)次加(jia)(jia)熱后(hou)不能熔(rong)(rong)融。這就(jiu)(jiu)是它們的主要特點。
2020-04-29 史(shi)輝 117
