聚氨(an)(an)酯(zhi)(zhi)油(you)封由異qin酸(suan)酯(zhi)(zhi)(單(dan)體(ti))與羥基(ji)化合(he)物聚合(he)而(er)成。由于含強極(ji)性(xing)(xing)(xing)的氨(an)(an)基(ji)甲酸(suan)酯(zhi)(zhi)基(ji),不(bu)(bu)溶于非(fei)極(ji)性(xing)(xing)(xing)基(ji)團,聚氨(an)(an)酯(zhi)(zhi)油(you)封具有良好的耐油(you)性(xing)(xing)(xing)、韌性(xing)(xing)(xing)、耐磨(mo)性(xing)(xing)(xing)、耐老化性(xing)(xing)(xing)和粘合(he)性(xing)(xing)(xing)。聚氨(an)(an)酯(zhi)(zhi)油(you)封用(yong)不(bu)(bu)同原料(liao)可(ke)制得適(shi)應(ying)較(jiao)寬溫度范圍(-50~150℃)的材料(liao),包(bao)括彈性(xing)(xing)(xing)體(ti)、熱塑性(xing)(xing)(xing)樹(shu)脂(zhi)和熱固性(xing)(xing)(xing)樹(shu)脂(zhi)。高(gao)溫下不(bu)(bu)耐水(shui)解,亦不(bu)(bu)耐堿性(xing)(xing)(xing)介質。
聚(ju)(ju)(ju)(ju)合(he)(he)方法隨材料(liao)性質而(er)不同。合(he)(he)成彈(dan)(dan)性體(ti)時先(xian)制(zhi)備低分子量(liang)二元醇,再(zai)與過(guo)(guo)量(liang)芳族(zu)(zu)異(yi)qin酸酯(zhi)反(fan)應(ying),生成異(yi)qin酸酯(zhi)為端基(ji)的預聚(ju)(ju)(ju)(ju)物(wu),再(zai)同丁er醇擴鏈,得(de)到熱塑(su)彈(dan)(dan)性體(ti);若(ruo)用(yong)芳族(zu)(zu)二胺擴鏈并(bing)進一(yi)步(bu)交聯(lian),聚(ju)(ju)(ju)(ju)氨酯(zhi)油封得(de)到澆鑄(zhu)型彈(dan)(dan)性體(ti)。預聚(ju)(ju)(ju)(ju)物(wu)用(yong)肼或二元胺擴鏈,得(de)到彈(dan)(dan)性纖維(wei);異(yi)qin酸酯(zhi)過(guo)(guo)量(liang)較(jiao)多的預聚(ju)(ju)(ju)(ju)體(ti)與催化劑(ji)、發泡劑(ji)混合(he)(he),可直接得(de)到硬質泡沫塑(su)料(liao)。如將單(dan)(dan)體(ti)、聚(ju)(ju)(ju)(ju)醚、水、催化劑(ji)等(deng)混合(he)(he),一(yi)步(bu)反(fan)應(ying)即(ji)可得(de)到軟質泡沫塑(su)料(liao)。單(dan)(dan)體(ti)與多元醇在(zai)溶液(ye)中反(fan)應(ying),可得(de)到涂(tu)料(liao);膠(jiao)粘劑(ji)則以(yi)多異(yi)qin酸酯(zhi)單(dan)(dan)體(ti)和低分子量(liang)聚(ju)(ju)(ju)(ju)酯(zhi)或聚(ju)(ju)(ju)(ju)醚在(zai)使(shi)用(yong)時混合(he)(he)并(bing)進行反(fan)應(ying)。
安裝骨架油(you)(you)封(feng)(feng)(feng)時,為防止油(you)(you)封(feng)(feng)(feng)唇121被拉(la)伸變形或(huo)(huo)刮擦(ca)損壞,須采用(yong)安裝工(gong)具。若無此(ci)工(gong)具,可用(yong)下法進行安裝:先在(zai)軸(zhou)頸(jing)(jing)乃至(zhi)軸(zhou)頭部位,卷上一層透明的(de)(de)硬塑料膜(mo)(俗(su)稱玻(bo)璃紙),在(zai)其表(biao)面抹上少許機油(you)(you),將(jiang)油(you)(you)封(feng)(feng)(feng)套進裹著塑料膜(mo)的(de)(de)軸(zhou)頭,均(jun)勻用(yong)力將(jiang)油(you)(you)封(feng)(feng)(feng)慢慢推壓至(zhi)軸(zhou)頸(jing)(jing),然后(hou)將(jiang)塑料膜(mo)抽出。注意:不可將(jiang)唇口的(de)(de)方向(xiang)裝錯,應(ying)使其朝向(xiang)貯有油(you)(you)液的(de)(de)內側,有商標、規格的(de)(de)一面朝向(xiang)外側。因為唇1:3只能(neng)單(dan)向(xiang)密封(feng)(feng)(feng),若油(you)(you)封(feng)(feng)(feng)裝反,勢(shi)必造成油(you)(you)液滲漏,密封(feng)(feng)(feng)作用(yong)減弱(ruo)或(huo)(huo)失效。要(yao)避(bi)免將(jiang)油(you)(you)封(feng)(feng)(feng)裝歪或(huo)(huo)用(yong)錘(chui)棒等工(gong)具在(zai)油(you)(you)封(feng)(feng)(feng)表(biao)面亂敲(qiao)猛打,否則容易使油(you)(you)封(feng)(feng)(feng)造成傷損。
油封的功能用途:
發動機(ji):曲軸--曲軸前,后油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)氣(qi)門--氣(qi)門油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)(發動機(ji)修理(li)包o型圈(quan))(分(fen)電器油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng),水泵油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng),平(ping)衡軸油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng),機(ji)油(you)(you)(you)(you)泵油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)...);凸(tu)輪(lun)軸--凸(tu)輪(lun)軸油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng);變速器:變速器--變速器前,后油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)換檔桿油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)(變速器修理(li)包o型圈(quan))(分(fen)動器--分(fen)動器前,后油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng));后橋:半軸--后半軸油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)差速器--(前)后角矢油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)后輪(lun)油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)前輪(lun)油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)方向(xiang)機(ji)油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)(方向(xiang)機(ji)修理(li)包o型圈(quan))方向(xiang)助力(li)器油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)(前半軸油(you)(you)(you)(you)封(feng)(feng)(feng)(feng)(feng)).
維(wei)護簡便(bian):泛塞(sai)封的(de)(de)簡單(dan)結構和可(ke)靠性能(neng)使得其(qi)維(wei)護簡便(bian),減少(shao)了(le)(le)泵和閥門的(de)(de)維(wei)修時間和成本。由于(yu)其(qi)耐(nai)磨、耐(nai)腐蝕(shi)等特性,泛塞(sai)封的(de)(de)使用壽命較長,減少(shao)了(le)(le)更(geng)換密封件的(de)(de)頻率和維(wei)護工作量。
定(ding)(ding)制化解決方(fang)案(an):針(zhen)對不同行業的(de)(de)特(te)殊(shu)需求,泛(fan)塞封(feng)可以提供(gong)定(ding)(ding)制化的(de)(de)解決方(fang)案(an),滿足各種(zhong)不同的(de)(de)密封(feng)要求。通過與客戶的(de)(de)緊密合作和技(ji)術支(zhi)持,泛(fan)塞封(feng)能夠提供(gong)滿足特(te)定(ding)(ding)工(gong)況(kuang)和規格(ge)的(de)(de)密封(feng)件,提高客戶的(de)(de)生產效率和設備性能。
您好,歡迎(ying)(ying)蒞臨恒耀密封,歡迎(ying)(ying)咨詢...
觸屏版二維碼 |