聚全氟乙丙烯/FKM-26乳液共混改性生胶性能研究  

Study on the Properties of Polyperfluoroethylene Propylene/FKM-26 Emulsion Blend Modified Raw Rubber

作　　者：王京辉 孟庆文[1] 余考明[1] Wang Jinghui;Meng Qingwen;Yu kaoming(Zhejiang Juhua Co.,Ltd.,Fluoropolymer Division,Quzhou 324004,China)

机构地区：[1]浙江巨化股份有限公司氟聚合物事业部,浙江衢州324004

出　　处：《有机氟工业》2018年第4期16-20,共5页Organo-Fluorine Industry

摘　　要：采用不同质量的聚全氟乙丙烯(FEP)乳液与FKM-26乳液共混,经过共凝聚、洗涤、干燥、塑炼出片、冷却包装得到改性氟橡胶的生胶,然后采用同一硫化配方制备混炼胶后进行性能测试。从SEM照片可知,FEP乳液共凝聚改性的FKM-26具有很好的相容性;从混炼加工的过程可知,改性氟橡胶的加工包辊效果好,吃料快,出片时胶料外观光洁;从硫化性能测试、力学性能测试结果可知,FEP的加入可以改善FKM-26的硫化性能和力学性能,但效果不明显;从低温脆化温度测试结果可知,FEP的加入可以明显降低FKM-26的低温脆化温度,从而提升混炼胶的耐低温性能;从耐油测试结果可知,FEP的加入可以明显改善FKM-26的耐油性能,相对耐3~#标准油来说,改性氟橡胶更耐1~#标准油。综合来看,10%左右含量的FEP乳液与FKM-26乳液共混得到的改性氟橡胶综合性能最佳。In this paper,the raw rubber of modified fluororubber was obtained by using different quality of polyperfluoroethylene propylene emulsion and FKM-26 emulsion after coacervation,washing,drying,plasticizing and packaging.Then the blend was prepared with the same vulcanization formula and the properties were tested.From the SEM photos,the FEP emulsion cocondensed modified FKM-26 has very good compatibility.From the process of mixing and processing,the modified fluororubber has good processing roll effect,fast eating material,smooth appearance of the rubber compound when it comes out of the sheet,and tests the vulcanization property.The results of physical and mechanical properties test show that the addition of FEP can improve the vulcanization and physical mechanical properties of FKM-26,but the effect is not obvious.The results of low temperature embrittlement temperature test show that the addition of FEP can obviously reduce the low temperature embrittlement temperature of FKM-26,thus improve the low temperature resistance of the blend.According to the oil resistance test results,the oil resistance of FKM-26 can be improved obviously by adding FEP,and the modified fluororubber is more resistant to 1^#standard oil than 3^#standard oil.The comprehensive properties of modified fluororubber were obtained by blending FEP emulsion with FKM-26 emulsion with about 10%of FEP emulsion.

关 键 词：FKM-26 聚全氟乙丙烯 乳液 共混 改性 

分 类 号：TQ333.93[化学工程—橡胶工业]