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SBR1712E

所属分类: SBR1712E
橡胶是指具有可逆形变的高弹性聚合物材料,在室温下富有弹性,在很小的外力作用下能产生较大形变,除去外力后能恢复原状。橡胶属于完全无定型聚合物,它的玻璃化转变温度(T g)低,分子量往往很大,大于几十万。
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橡(xiang)胶(jiao)是指具有可(ke)逆(ni)形变(bian)(bian)的(de)高(gao)弹性聚(ju)合(he)物材料(liao),在(zai)室温下富有弹性,在(zai)很(hen)小的(de)外力(li)作(zuo)用下能产生较大(da)形变(bian)(bian),除去外力(li)后能恢(hui)复原状。橡(xiang)胶(jiao)属(shu)于完(wan)全无(wu)定型聚(ju)合(he)物,它的(de)玻璃化(hua)转变(bian)(bian)温度(du)(T g)低,分(fen)子量往往很(hen)大(da),大(da)于几十万。

橡胶(jiao)(jiao)(jiao)分为天然(ran)橡胶(jiao)(jiao)(jiao)与合(he)成(cheng)橡胶(jiao)(jiao)(jiao)二(er)种。天然(ran)橡胶(jiao)(jiao)(jiao)是从橡胶(jiao)(jiao)(jiao)树、橡胶(jiao)(jiao)(jiao)草等植物(wu)中提取胶(jiao)(jiao)(jiao)质后加工制成(cheng);合(he)成(cheng)橡胶(jiao)(jiao)(jiao)则由各种单(dan)体经聚合(he)反应(ying)而得。橡胶(jiao)(jiao)(jiao)制品广泛应(ying)用于工业或生活各方面。

通用型橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)的(de)综合(he)(he)性(xing)(xing)能较好(hao),应用广泛。主(zhu)要有:①天(tian)(tian)然(ran)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),从三叶橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)树的(de)乳胶(jiao)(jiao)(jiao)(jiao)制(zhi)得(de),基(ji)本(ben)化(hua)学成(cheng)分为顺(shun)- 聚异戊二(er)烯。弹性(xing)(xing)好(hao),强度高(gao),综合(he)(he)性(xing)(xing)能好(hao)。②异戊橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),全名为顺(shun)-1,4-聚异戊二(er)烯橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),由(you)异戊二(er)烯制(zhi)得(de)的(de)高(gao)顺(shun)式合(he)(he)成(cheng)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),因其(qi)结构和(he)(he)性(xing)(xing)能与天(tian)(tian)然(ran)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)近似(si),故又(you)称合(he)(he)成(cheng)天(tian)(tian)然(ran)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)。③丁(ding)(ding)(ding)(ding)苯(ben)(ben)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),简称SBR,由(you)丁(ding)(ding)(ding)(ding)二(er)烯和(he)(he)苯(ben)(ben)乙(yi)烯共聚制(zhi)得(de)。按生产方法分为乳液聚合(he)(he)丁(ding)(ding)(ding)(ding)苯(ben)(ben)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)和(he)(he)溶液聚合(he)(he)丁(ding)(ding)(ding)(ding)苯(ben)(ben)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)。其(qi)综合(he)(he)性(xing)(xing)能和(he)(he)化(hua)学稳定(ding)性(xing)(xing)好(hao)。④顺(shun)丁(ding)(ding)(ding)(ding)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),全名为顺(shun)式-1,4-聚丁(ding)(ding)(ding)(ding)二(er)烯橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),简称BR,由(you)丁(ding)(ding)(ding)(ding)二(er)烯聚合(he)(he)制(zhi)得(de)。与其(qi)他通用型橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)比,硫(liu)化(hua)后(hou)的(de)顺(shun)丁(ding)(ding)(ding)(ding)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)的(de)耐(nai)(nai)寒(han)性(xing)(xing)、耐(nai)(nai)磨性(xing)(xing)和(he)(he)弹性(xing)(xing)特别(bie)优异,动负荷下发热(re)少,耐(nai)(nai)老化(hua)性(xing)(xing)能好(hao),易(yi)与天(tian)(tian)然(ran)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)、氯(lv)丁(ding)(ding)(ding)(ding)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)、丁(ding)(ding)(ding)(ding)腈橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao)等并用。⑤氯(lv)丁(ding)(ding)(ding)(ding)橡(xiang)(xiang)(xiang)(xiang)(xiang)胶(jiao)(jiao)(jiao)(jiao),简称CR,由(you)氯(lv)丁(ding)(ding)(ding)(ding)二(er)烯聚合(he)(he)制(zhi)得(de)。具有良好(hao)的(de)综合(he)(he)性(xing)(xing)能,耐(nai)(nai)油、耐(nai)(nai)燃(ran)、耐(nai)(nai)氧化(hua)和(he)(he)耐(nai)(nai)臭(chou)氧。但(dan)其(qi)密(mi)度较大,常温下易(yi)结晶变硬,贮存性(xing)(xing)不好(hao),耐(nai)(nai)寒(han)性(xing)(xing)差。

关键词:
橡胶
天然橡胶
综合
弹性
合成橡胶
丁苯橡胶
简称
丁二烯
性能
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