纳米SiO_x补强天然乳胶膜抗剪切机理的研究  

Study on Shear Strength of Nature Rubber Latex Film reinforced with n-SiO_x

作　　者：刘东辉[1] 杨波 黄俊[1] 徐亚丽[1] 

机构地区：[1]昆明理工大学化学工程学院,昆明650500 [2]信息产业电子第11设计研究院有限公司,成都610021

出　　处：《特种橡胶制品》2012年第2期11-14,共4页Special Purpose Rubber Products

基　　金：云南省自然科学基金项目;编号:2009ZC025M

摘　　要：使用合适表面处理剂,通过剪切、搅拌混合和超声波处理,制备了高浓度n—SiOx分散悬浮液;在合适的剪切强度下,将分散悬乳液按n-SiOx质量分数为2.0%均匀分散在天然乳胶中,制备了n-SiOx补强型天然乳胶膜试样。乳胶膜直角撕裂强度测试结果和扫描电子显微镜图像分析表明,n-SiOx粒子较好地分散在天然乳胶中,能与乳胶分子链形成较为牢固的整体结构,其剪切强度较白炭黑试样提高了52.32%;n-SiOx悬浮液浓度是实验的主要影响因素,超声波分散时间、25G工作头转速和均质分散时间次之。Using the surface treatment agent,the high density dispersed suspension of n-SiOx was prepared though shear action,agitation-blend and ultrasonic wave.By suitable shear force,the suspension that the mass percentage of n-SiOx was 2.0% was evenly dispersed into nature rubber latex,and the nature rubber film sample reinforced with n-SiOx was prepared.The test results of angle tear strength and the SEM analysis showed that the n-SiOx particles could homogeneously disperse into the nature rubber latex,and form firm structure with the nature rubber latex′s molecular chains,and the angle tear strength was 152.32% of the film sample filled with silica.The main effecting factor was the density of the n-SiOx suspension,the secondary factors were the dispersing time of ultrasonic wave,the running frequency of 25G head and the emulsification time.

关 键 词：纳米SIOX 天然乳胶膜 直角撕裂强度 超声波 分散 

分 类 号：TQ331.2[化学工程—橡胶工业]