含羧基丙烯酸酯橡胶的合成与表征  

Synthesis and Characterization of Carboxyl-containing Acrylate Rubber

作　　者：王惊[1] 李红强[1] 赖学军[1] 曾幸荣[1] 石建伟 韩泽明 潘杰辉 WANG Jing;LI Hong-qiang;LAI Xue-jun;ZENG Xing-rong;SHI Jian-wei;HAN Ze-ming;PAN Jie-hui(College of Materials Science and Engineering,South China University of Technology, Guangzhou 510640, Guangdong, China;Guangzhou Shine Polymer Technology Co., Ltd., Guangzhou 511400, Guangdong, China)

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州熵能创新材料股份有限公司,广东广州511400

出　　处：《合成材料老化与应用》2017年第6期5-7,37,共4页Synthetic Materials Aging and Application

基　　金：广州市科技计划项目产学研协同创新重大专项(201604010028)

摘　　要：选用丙烯酸乙酯和丙烯酸丁酯为主单体,以丙烯酸为交联点单体,采用半连续种子乳液聚合法合成出含羧基丙烯酸酯橡胶。研究了丙烯酸的用量对乳液聚合体系单体转化率的影响,利用红外光谱和差示扫描量热仪对含羧基丙烯酸酯橡胶的结构进行了表征,并测试了其硫化胶的力学性能。结果表明,丙烯酸的引入有助于提高聚合体系的单体转化率;随着丙烯酸用量的增加,丙烯酸酯橡胶的玻璃化转变温度明显上升;以1#硫化剂和邻二苯胍分别作为硫化剂和促进剂,能够有效硫化含羧基丙烯酸酯橡胶,且当丙烯酸用量为4%时,所制备的硫化胶的拉伸强度和断裂伸长率分别达到5.8MPa和606%。Carboxyl-containing acrylate rubber was synthesized with ethyl acrylate and butyl acrylate as main monomers,and acrylic acid as crosslinking-point monomer via semi-continuous seeded emulsion polymerization method. The effect of the amount of acrylic acid on the monomer conversion in emulsion polymerization was studied,the structure of carboxyl-containing acrylate rubber was characterized with FT-IR and DSC,and the mechanical properties of the vulcanized rubber were also measured. The results showed that the addition of acrylic acid was beneficial for the increase of monomer conversion,and the glass transition temperatures of the obtained acrylate rubber increased with the amount of acrylic acid increasing. 1 # vulcanizing agent and di-o-tolylguanidine could effectively accelerate the vulcanization of carboxyl-containing acrylate rubber. When the amount of acrylic acid was 4 %,the tensile strength and break at elongation of the vulcanized rubber reached to 5. 8 MPa and606 %,respectively.

关 键 词：丙烯酸酯橡胶 丙烯酸 乳液聚合 力学性能 

分 类 号：TQ333.97[化学工程—橡胶工业]