摘要
采用硬脂酸、异辛醇以及羟丙基甲基纤维素作为辅助剂制备了快速凝固天然橡胶,并对凝固后天然生胶的结构、加工性能、热稳定性和力学性能进行研究。研究表明快速凝固橡胶的蛋白质含量增加。与乙酸凝固相比,快速凝固天然橡胶具有更高的热稳定性、较低的损耗因子。同时,快速凝固天然橡胶的拉伸强度和撕裂强度相对乙酸凝固天然橡胶分别由18.0 MPa与28.9 kN·m^(-1)提高到21.1 MPa和35.5 kN·m^(-1),交联密度由4.39×10~5 mol/cm^3提高到5.09×10~5 mol/cm^3。
Rapid coagulation natural rubber was prepared by using of stearic acid,2-ethylhexanol and hydroxypropyl methyl cellulose as auxiliary agents.And the structure,processability,thermal stability and mechanical property of the rubber were studied.The protein content of the resulting natural rubber was higher than that of natural rubber coagulated with acetic acid.Results showed that thermal stability was improved and the loss factor was decreased via rapid coagulation method.Comparing with acetic acid coagulation rubber,the tensile strength of the rapid coagulation natural rubber was enhanced from 18.0 MPa to 21.1 MPa,the tear strength was improved from 28.9kN·m^（-1） to 35.5 kN·m^（-1） as well,the crosslinked density was increased from 4.39×10^5 mol/cm^3 to 5.09×10^5 mol/cm^3.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2016年第4期25-28,32,共5页
Materials Reports
基金
国家自然科学基金(51363006)
国家科技支撑计划项目(2013BAF08B02)
公益性行业(农业)科研专项项目(201403066)
关键词
天然橡胶
快速凝固
蛋白质
羟丙基甲基纤维素
natural rubber
rapid coagulation
protein
hydroxypropyl methyl cellulose
