不同硫载体对轮胎用NR胶料性能的影响  

Effects of different sulfur donors on properties of NR compound for tire

作　　者：苘辉刚 范汝良[2] 张青凯 Aihara T 纪奎江 

机构地区：[1]莱茵化学(青岛)有限公司,山东青岛266043 [2]上海交通大学高分子材料研究所,上海200240

出　　处：《轮胎工业》2001年第6期342-346,共5页Tire Industry

摘　　要：研究了添加不同硫载体化合物二辛基多硫代磷酸酯 (SDT/S)、二丁基二硫代磷酸锌 (TP/S)、二硫代己内酰胺 (S/G)、二硫代二吗啡啉 (M /G)以及SDT/S的用量对轮胎用NR胶料的加工性能、硫化特性、拉伸性能、动态生热和压缩永久变形等性能的影响规律 ,并与传统硫黄硫化体系进行了比较。结果表明 ,加入SDT/S和TP/S会缩短门尼焦烧时间 ,但能提高硫化平坦模量和改善抗硫化返原能力 ;较低硫化温度 (145℃ )下 ,传统硫化体系赋予NR硫化胶较低的拉伸强度和 30 0 %定伸应力 ,提高硫化温度 (175℃ ) ,会使加入硫载体的NR硫化胶具有较高的拉伸性能保持率 ;加入SDT/S和提高其用量 ,可提高NR胶料的抗硫化返原性能 。The effects of the different sulfur donors,such as dioctyl polythiophosphate (SDT/S),zinc dibutyl dithiophosphate (TP/S),dithiocaprolactam (S/G) and dithiomorpholine (M/G),and the addition level of SDT/S on the processibility,curing behaviour,tensile strength,dynamic heat build up and compression set of NR compound for tire were investigated by using the sulfur curing system as reference.The results showed that the Mooney scorch time was reduced,and the plateau modulus and the reversion resistance was improved by adding SDT/S and TP/S;the conventional curing system gave lower tensile strength and modulus at 300% to NR vulcanizate cured at lower temperature (145 ℃),and the sulfur donors gave higher tensile strength and retention to NR vulcanizate cured at higher temperature (175 ℃);and the reversion resistance,dynamic heat build up and compression set improved by increasing the addition level of SDT/S.

关 键 词：天然橡胶 轮胎 NR 硫载体化合物 胶料性能 加工性能 硫化特性 

分 类 号：TQ330[化学工程—橡胶工业]