混炼外场条件对溶聚丁苯橡胶/天然橡胶胶料性能的影响
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摘要
研究混炼外场条件对溶聚丁苯橡胶/天然橡胶胶料性能的影响。结果表明:随着转子转速增大,混炼胶的门尼粘度变化不大,FL先增大后减小,F_(max)增大,t_(10)缩短,t_(90)变化不大;硫化胶的邵尔A型硬度、拉伸强度和拉断伸长率增大,撕裂强度减小;胶料的Payne效应先增强后减弱。随着初始混炼温度升高,混炼胶的门尼粘度、FL和F_(max)增大,t_(10)和t_(90)缩短;硫化胶的300%定伸应力、拉伸强度、拉断伸长率和撕裂强度呈减小趋势;胶料的Payne效应明显增强。
The effect of mixing field conditions on the properties of the SSBR/NR compound was investigated. The results showed that,with the increase of rotor speed,the Mooney viscosity of compound changed little,minimum torque was increased first and then decreased,the maximum torque was increased,the scorch time was shortened,the optimum cure time changed little;the Shore A hardness,tensile strength and elongation at break of vulcanizate were increased,the tear strength was decreased,and the Payne effect of the compound was strengthened first and then weakened. With the increase of initial mixing temperature,the Mooney viscosity,minimum torque and maximum torque of the compound were increased,the scorch time and optimum cure time were shortened,the modulus at 300%,tensile strength,elongation at break and tear strength of vulcanizate decreased in general,and the Payne effect of the compound was significantly enhanced.
The effect of mixing field conditions on the properties of the SSBR/NR compound was investigated. The results showed that,with the increase of rotor speed,the Mooney viscosity of compound changed little,minimum torque was increased first and then decreased,the maximum torque was increased,the scorch time was shortened,the optimum cure time changed little;the Shore A hardness,tensile strength and elongation at break of vulcanizate were increased,the tear strength was decreased,and the Payne effect of the compound was strengthened first and then weakened. With the increase of initial mixing temperature,the Mooney viscosity,minimum torque and maximum torque of the compound were increased,the scorch time and optimum cure time were shortened,the modulus at 300%,tensile strength,elongation at break and tear strength of vulcanizate decreased in general,and the Payne effect of the compound was significantly enhanced.
引文
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[11]陈锦波.橡胶混炼技术的最新研究[J].世界橡胶工业,2005,32(6):28-32.
[2]罗勇悦,吕明哲,伊智峰.混炼工艺对NR性能的影响[J].橡胶工业,2010,57(6):347-349.
[3]刘庆燕,杨文超,汪传生.同步转子密炼机转速对混炼过程影响的研究[J].特种橡胶制品,2007,28(1):46-48.
[4]Hasse A,Wehmeier A,Luginsland H D.Crosslinking and Reinforcemet of Silica/Silica-filled Rubber Compounds[J].Rubber World,2004,230(1):22-30.
[5]莫跃飞,胡纪全,边慧光.不同螺旋角同步转子混炼效果的有限元分析[J].橡胶工业,2017,64(8):493-497.
[6]王晓营,赵树高.密炼机转速对白炭黑补强溶聚丁苯橡胶性能的影响[J].橡胶工业,2014,61(12):720-725.
[7]张海燕.双转子连续混炼机转子结构的优化及混炼机理的研究[D].北京:北京化工大学,2009.
[8]White S L.Development of Internal-mixer Technology for the Rubber Industry[J].Rubber Chemistry and Technology,1992,65(3):527-579.
[9]张俊岭.密炼机混炼过程中流场和温度场的三维有限元模拟机实验分析[D].青岛:青岛科技大学,2008.
[10]张安强,王炼石,周奕雨.混炼条件对HAF填充型粉末SBR混炼性能的影响[J].橡胶工业,2002,49(10):581-584.
[11]陈锦波.橡胶混炼技术的最新研究[J].世界橡胶工业,2005,32(6):28-32.