小橡胶粒子对浓缩天然胶乳胶体性能的影响  

Effect of small rubber particles on colloidal properties of concentrated natural rubber latex

作　　者：赵添琪 张福全[2] 彭文凤 王浩志 郑加刚 赵艳芳[1] 廖小雪[1] 廖禄生[2,3] ZHAO Tianqi;ZHANG Fuquan;PENG Wenfeng;WANG Haozhi;ZHENG Jiagang;ZHAO Yanfang;LIAO Xiaoxue;LIAO Lusheng(School of Materials Science and Engineering,Hainan University,Haikou 570228,China;Institute of Agricultural Products Processing,Chinese Academy of Tropical Agricultural Sciences,Guangdong Key Laboratory of Natural Rubber Processing,Zhanjiang 524001,China;Hainan Key Laboratory of Natural Rubber Processing,Zhanjiang 524001,China)

机构地区：[1]海南大学材料科学与工程学院,海南海口570228 [2]中国热带农业科学院农产品加工研究所广东省天然橡胶加工重点实验室,广东湛江524001 [3]海南省天然橡胶加工重点实验室,广东湛江524001

出　　处：《弹性体》2024年第2期21-25,共5页China Elastomerics

基　　金：海南省自然科学基金项目(521RC1039);国家重点研发计划项目课题(2022YFD2301203);现代农业产业技术体系建设专项资助项目(CARS-33-JG2);中央级公益性科研院所基本科研业务费专项(1630122022006);海南省科技项目资助(ZDYF2022XDNY209)。

摘　　要：基于鲜天然胶乳制备浓缩胶乳的过程中胶清未得到有效利用,同时小橡胶粒子有着自己的独特的性能。本文通过膏化法从胶清中获得小橡胶粒子,将小橡胶粒子胶乳(SRPL)与浓缩胶乳以不同质量比进行混合,对贮存过程中混合胶乳的胶体性能进行研究。结果表明,小橡胶粒子的相对分子质量较大,小橡胶粒子在浓缩胶乳中含量越多,混合胶乳的相对分子质量随之增大;随着小粒子含量的增加,浓缩胶乳样的平均粒径不断减少;随着贮存时间的增加,各胶乳样品中橡胶粒子的平均粒径变化不大;SRPL加入到浓缩胶乳中,对浓缩胶乳的黏度、机械稳定度、热稳定度都有影响,随着小橡胶粒子用量的增加,胶乳的黏度随之升高,胶乳的机械稳定度和热稳定性先下降,随后上升并趋于稳定。In the process of preparing concentrated latex based on fresh natural latex,the latex has not been effectively utilized.At the same time,small rubber particles have their own unique properties.Small rubber particles(SRP)were obtained from the skim rubber latex by the paste method,and SRPLwas mixed with concentrated latex in different mass ratios to study the colloidal properties of the mixed latex during storage.The results show that the molecular weight of SRP is relatively larger.The molecular weight of the mixed later increases with the SRP content in the concentrared latex.As the content of small particles increases,the average particle size of the concentrated latex samples continues to decrease.With the storage time increases,the average particle size of the rubber particles in each latex sample does not change significantly.The addition of SRPL to the concentrated latex has an impact on the viscosity,mechanical stability,and thermal stability of the concentrated latex.With the increase of small rubber particles,the viscosity of the latex increases,the mechanical stability and thermal stability of the latex first decrease,then increase and stabilize.

关 键 词：橡胶粒子 浓缩胶乳 胶清 性能 

分 类 号：TQ331.2[化学工程—橡胶工业]