苯基硅中间体对橡胶的高低温抗拉伸性能影响研究  

Study on the influence of phenyl silicon intermediate on the tensile properties of rubber at high and low temperatures

作　　者：方军 Fang Jun(Shanghai Yinshuo New Material Technology Co.,Ltd.,Shanghai)

机构地区：[1]上海茵硕新材料科技有限公司,上海201611

出　　处：《化学工程与装备》2023年第6期46-49,共4页Chemical Engineering & Equipment

摘　　要：目的:测定研究苯基硅中间体在高温和低温的环境下对橡胶抗拉伸性能的影响。方法:在测试橡胶样例中添加不同型号的白炭黑,对其进行基础分子结构的剥离。随后,在不同的温度环境下,根据苯基硅中间体分子的变动,测定出此时橡胶的邵尔硬度,增加橡胶中苯基硅中间体的含量,对应环境下,测算出撕裂强度及弹性模量的测算,标记出损耗峰值点,根据冷热稳定性的分析,测试算出阻尼峰值,完成在极高温与低温环境下,橡胶抗拉伸性能的变动。结果:高温下,苯基硅中间体会促使橡胶的抗拉伸强度增加,为180MPa,整体的韧性提高,不容易断裂;在低温下,苯基硅中间体导致橡胶内部分子发生变化,抗拉伸强度在58 MPa,较容易碎裂,整体的韧性下降,容易碎裂。结论:苯基硅中间体与橡胶的融合,提升了橡胶自身的苯基含量,具有良好兼容性。橡胶中苯基硅中间体含量增加,促使其硫化程度增强,拉伸及撕裂率提高,抗拉伸强度提高;反之,橡胶中苯基硅中间体含量减少,橡胶的硫化程度下降,拉伸及撕裂率减低,抗拉伸强度减低,表明苯基硅中间体可以更好地改善橡胶的使用性能,依据需求调整使用结果。Objective:To determine and study the influence of phenyl silicon intermediate on the tensile properties of rubber at high and low temperatures.Methods:Different types of white carbon black were added to the rubber samples,and their basic molecular structures were stripped.Then,under different temperature environments,according to the changes of phenyl silicon intermediate molecules,the Shore hardness of the rubber at this time is measured,the content of phenyl silicon intermediate in the rubber is increased,the tear strength and elastic modulus are calculated under the corresponding environment,the loss peak point is marked,and the damping peak value is calculated according to the analysis of thermal and cold stability,so as to complete the change of the tensile resistance of the rubber under extremely high and low temperature environments.Results:At high temperature,the tensile strength of the rubber was increased to 180MPa,and the overall toughness was improved,so it was not easy to break;At low temperature,the phenyl silicon intermediate causes the internal molecules of rubber to change.The tensile strength is 58 MPa,which is easy to break,and the overall toughness is reduced,which is easy to break.Conclusion:The fusion of phenyl silicon intermediate and rubber has improved the phenyl content of rubber itself,and has good compatibility.The increase of the content of phenyl silicon intermediate in rubber promoted its vulcanization degree,tensile and tear rate,and tensile strength;On the contrary,the content of phenyl silicon intermediate in rubber decreases,the degree of vulcanization of rubber decreases,the tensile and tear rate decreases,and the tensile strength decreases,indicating that phenyl silicon intermediate can better improve the use performance of rubber,and the use result can be adjusted according to the demand.

关 键 词：苯基硅 中间体 橡胶结构 高低温 抗拉伸性能 影响研究 

分 类 号：TQ330.1[化学工程—橡胶工业]