炭黑用量对四丙氟橡胶硫化特性、物理机械性能和动态力学性能的影响  

Effect of additon amount of carbon black on curing characteristics, physical and mechanical properties, and dynamic mechanical properties of tetrafluoroethylene-propylene rubber

作　　者：龚子情 李波 何连成 黄溪岱 赵洪国 吴宇 胡海华 周雷 GONG Zi-qing;LI Bo;HE Lian-cheng;HUANG Xi-dai;ZHAO Hong-guo;WU Yu;HU Hai-hua;ZHOU Lei(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina/Synthetic Rubber Engineering Technology Research Center of Gansu/Synthetic Rubber Engineering Research Center of CPCIF,Lanzhou 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心/甘肃省合成橡胶工程技术研究中心/中国石油和化学工业联合会合成橡胶工程研究中心,兰州730060

出　　处：《合成橡胶工业》2024年第6期491-495,共5页China Synthetic Rubber Industry

基　　金：甘肃省科技重大专项(23 ZDGA 001)。

摘　　要：研究了炭黑用量对四丙氟橡胶混炼胶硫化特性,硫化胶物理机械性能、动态力学性能和高低温性能的影响。结果表明,随着炭黑用量的增加,混炼胶门尼黏度升高,最小转矩增大,焦烧时间无明显变化,硫化速率先降低后趋于平稳,硫化胶交联密度先升高后降低。采用一段硫化工艺硫化胶的拉伸强度和扯断伸长率均呈下降的趋势,而100%定伸应力和邵尔A硬度则均呈上升的趋势;采用二段硫化工艺硫化胶的邵尔A硬度、100%定伸应力和拉伸强度较之于一段硫化工艺有显著提升。随着炭黑用量的增加,硫化胶的玻璃化转变区域明显变窄,玻璃化转变温度向低温方向移动,同时其200℃时的损耗因子增大,储能模量和损耗模量均先增大后基本保持不变。The effect of carbon black addition amount on curing characteristics of tetrafluoroethylene-propylene rubber compounds and physical and mechanical properties,dynamic mechanical properties and high-and low-temperature properties of the vulcanizates were studied.The results showed that with the increase in the addition amount of carbon black,Mooney viscosity and minimum torque of compounds increased,scorch time had no obvious change,the vulcanization rate first decreased and then tended to be stable,and the crosslinking density of vulcanizates first increased and then decreased.Both tensile strength and elongation at break of the vulcanizate by the one-stage vulcanization process showed a decreasing trend,while modulus at 100%and Shore A hardness showed an increasing trend.Shore A hardness,modulus at 100%and tensile strength of the vulcanizate by the two-stage vulca-nization process improved significantly compared with those of the vulcanizate by the one-stage vulcanization process.With the increase in the addition amount of carbon black,the glass transition region of the vulcanizates became narrow significantly,the glass transition temperature moved to the low temperature direction,and meanwhile the loss factor at 200℃increased,both the storage modulus and loss modulus first increased and then remained essentially constant.

关 键 词：四丙氟橡胶 炭黑 硫化特性 物理机械性能 动态力学性能 高低温性能 

分 类 号：TQ333.93[化学工程—橡胶工业]