容易(yi)進項橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)層(ceng)老化(hua)(hua)(hua)(hua)(hua)、脫落現(xian)象，使用(yong)(yong)(yong)(yong)過(guo)(guo)程(cheng)(cheng)中(zhong)。保定(ding)八達膠(jiao)(jiao)(jiao)帶(dai)有(you)限公司經過(guo)(guo)研究，引起(qi)(qi)(qi)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)老化(hua)(hua)(hua)(hua)(hua)的(de)(de)(de)(de)(de)(de)因(yin)素有(you)一(yi)下(xia)(xia)幾(ji)方(fang)(fang)面：1氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)：氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)在(zai)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)中(zhong)同(tong)(tong)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)分(fen)(fen)子(zi)(zi)(zi)發(fa)(fa)生(sheng)(sheng)游離(li)基(ji)(ji)鏈(lian)(lian)鎖反(fan)應(ying)，分(fen)(fen)子(zi)(zi)(zi)鏈(lian)(lian)發(fa)(fa)生(sheng)(sheng)斷(duan)裂或(huo)過(guo)(guo)度交(jiao)聯(lian)，引起(qi)(qi)(qi)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)性(xing)(xing)能(neng)(neng)的(de)(de)(de)(de)(de)(de)改(gai)變(bian)。氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)作(zuo)(zuo)用(yong)(yong)(yong)(yong)是橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)老化(hua)(hua)(hua)(hua)(hua)的(de)(de)(de)(de)(de)(de)重要(yao)原因(yin)之一(yi)。2臭(chou)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)、臭(chou)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)的(de)(de)(de)(de)(de)(de)化(hua)(hua)(hua)(hua)(hua)學活(huo)(huo)(huo)性(xing)(xing)比氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)高(gao)得多，破(po)(po)壞(huai)性(xing)(xing)更大，同(tong)(tong)樣是使分(fen)(fen)子(zi)(zi)(zi)鏈(lian)(lian)發(fa)(fa)生(sheng)(sheng)斷(duan)裂，但臭(chou)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)對(dui)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)情況隨橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)變(bian)形(xing)與(yu)否而(er)不(bu)同(tong)(tong)。當作(zuo)(zuo)用(yong)(yong)(yong)(yong)于變(bian)形(xing)的(de)(de)(de)(de)(de)(de)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)（主(zhu)要(yao)是不(bu)飽和(he)(he)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)）時(shi)(shi)，出(chu)現(xian)與(yu)應(ying)力作(zuo)(zuo)用(yong)(yong)(yong)(yong)方(fang)(fang)向垂(chui)直的(de)(de)(de)(de)(de)(de)裂紋，即所(suo)謂(wei)“臭(chou)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)龜裂”作(zuo)(zuo)用(yong)(yong)(yong)(yong)于變(bian)形(xing)的(de)(de)(de)(de)(de)(de)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)時(shi)(shi)，僅外表(biao)生(sheng)(sheng)成(cheng)(cheng)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)膜而(er)不(bu)龜裂。3熱(re)(re)：提(ti)高(gao)溫(wen)度可引起(qi)(qi)(qi)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)熱(re)(re)裂解或(huo)熱(re)(re)交(jiao)聯(lian)。但熱(re)(re)的(de)(de)(de)(de)(de)(de)基(ji)(ji)本作(zuo)(zuo)用(yong)(yong)(yong)(yong)還是活(huo)(huo)(huo)化(hua)(hua)(hua)(hua)(hua)作(zuo)(zuo)用(yong)(yong)(yong)(yong)。提(ti)高(gao)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)擴散速度和(he)(he)活(huo)(huo)(huo)化(hua)(hua)(hua)(hua)(hua)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)反(fan)應(ying)，從而(er)加(jia)速橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)反(fan)應(ying)速度，這是普遍存(cun)在(zai)一(yi)種(zhong)老化(hua)(hua)(hua)(hua)(hua)現(xian)象—熱(re)(re)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)老化(hua)(hua)(hua)(hua)(hua)。4光(guang)：光(guang)波越短、能(neng)(neng)量越大。對(dui)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)起(qi)(qi)(qi)破(po)(po)壞(huai)作(zuo)(zuo)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)能(neng)(neng)量較高(gao)的(de)(de)(de)(de)(de)(de)紫(zi)(zi)外線(xian)。紫(zi)(zi)外線(xian)除了能(neng)(neng)直接引起(qi)(qi)(qi)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)分(fen)(fen)子(zi)(zi)(zi)鏈(lian)(lian)的(de)(de)(de)(de)(de)(de)斷(duan)裂和(he)(he)交(jiao)聯(lian)外，橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)因(yin)吸收光(guang)能(neng)(neng)而(er)發(fa)(fa)生(sheng)(sheng)游離(li)基(ji)(ji)，引發(fa)(fa)并加(jia)速氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)鏈(lian)(lian)反(fan)應(ying)過(guo)(guo)程(cheng)(cheng)。紫(zi)(zi)外線(xian)光(guang)起(qi)(qi)(qi)著加(jia)熱(re)(re)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)。光(guang)作(zuo)(zuo)用(yong)(yong)(yong)(yong)其(qi)另(ling)一(yi)特點（與(yu)熱(re)(re)作(zuo)(zuo)用(yong)(yong)(yong)(yong)不(bu)同(tong)(tong)）主(zhu)要(yao)在(zai)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)表(biao)面進生(sheng)(sheng)。含膠(jiao)(jiao)(jiao)率高(gao)的(de)(de)(de)(de)(de)(de)試樣，兩面會出(chu)現(xian)網狀裂紋，即所(suo)謂(wei)“光(guang)外層(ceng)裂”5機械(xie)(xie)(xie)應(ying)力：輸送帶(dai)在(zai)機械(xie)(xie)(xie)應(ying)力反(fan)復作(zuo)(zuo)用(yong)(yong)(yong)(yong)下(xia)(xia)以及和(he)(he)托輥的(de)(de)(de)(de)(de)(de)不(bu)時(shi)(shi)摩(mo)擦(ca)過(guo)(guo)程(cheng)(cheng)，會使橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)分(fen)(fen)子(zi)(zi)(zi)鏈(lian)(lian)斷(duan)裂生(sheng)(sheng)成(cheng)(cheng)游離(li)基(ji)(ji)，引發(fa)(fa)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)鏈(lian)(lian)反(fan)應(ying)，形(xing)成(cheng)(cheng)力化(hua)(hua)(hua)(hua)(hua)學過(guo)(guo)程(cheng)(cheng)。機械(xie)(xie)(xie)斷(duan)裂分(fen)(fen)子(zi)(zi)(zi)鏈(lian)(lian)和(he)(he)機械(xie)(xie)(xie)活(huo)(huo)(huo)化(hua)(hua)(hua)(hua)(hua)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)化(hua)(hua)(hua)(hua)(hua)過(guo)(guo)程(cheng)(cheng)。哪個能(neng)(neng)占優(you)勢，視(shi)其(qi)所(suo)處的(de)(de)(de)(de)(de)(de)條件(jian)而(er)定(ding)。此外，應(ying)力作(zuo)(zuo)用(yong)(yong)(yong)(yong)下(xia)(xia)容易(yi)引起(qi)(qi)(qi)臭(chou)氧(yang)(yang)(yang)(yang)(yang)(yang)(yang)(yang)龜裂。6水(shui)分(fen)(fen)：水(shui)分(fen)(fen)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)有(you)兩個方(fang)(fang)面：橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)在(zai)濕潤空氣(qi)淋雨或(huo)浸泡(pao)(pao)在(zai)水(shui)中(zhong)時(shi)(shi)，容易(yi)破(po)(po)壞(huai)，這是由于橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)中(zhong)的(de)(de)(de)(de)(de)(de)水(shui)溶(rong)性(xing)(xing)物(wu)(wu)質和(he)(he)清水(shui)基(ji)(ji)團等成(cheng)(cheng)分(fen)(fen)被水(shui)抽提(ti)溶(rong)解。水(shui)解或(huo)吸收等原因(yin)引起(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)特別是水(shui)浸泡(pao)(pao)和(he)(he)大氣(qi)曝露的(de)(de)(de)(de)(de)(de)交(jiao)替(ti)作(zuo)(zuo)用(yong)(yong)(yong)(yong)下(xia)(xia)，會加(jia)速橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)破(po)(po)壞(huai)。但在(zai)某(mou)種(zhong)情況下(xia)(xia)水(shui)分(fen)(fen)對(dui)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)則不(bu)起(qi)(qi)(qi)破(po)(po)壞(huai)作(zuo)(zuo)用(yong)(yong)(yong)(yong)，甚至有(you)延緩老化(hua)(hua)(hua)(hua)(hua)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)。7其(qi)它:對(dui)橡(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)(yong)因(yin)素還有(you)化(hua)(hua)(hua)(hua)(hua)學介(jie)質、變(bian)價金屬離(li)子(zi)(zi)(zi)、高(gao)能(neng)(neng)輻射、電(dian)和(he)(he)生(sheng)(sheng)物(wu)(wu)等。
