加成型硅橡胶用含酯基有机硅增粘剂的制备及应用性能  

Preparation and Properties of Ester Group Containing Silicone Adhesion Promoter for Addition-cure Liquid Silicone Rubber

作　　者：周为[1] 赖学军[1] 李红强[1] 汪昱辰[1] 曾幸荣[1] 王全 肖贵斌 邹小武 苏俊柳 

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]东莞市贝特利新材料有限公司,广东东莞523143

出　　处：《有机硅材料》2013年第6期409-414,共6页Silicone Material

基　　金：广东省教育部产学研结合项目(2011A090200061)

摘　　要：以含氢硅油(PHMS)和1,6-己二醇二丙烯酸酯(HDDA)为原料,通过硅氢加成反应合成了含酯基的有机硅增粘剂(PHMS-g-HDDA),并将其用于加成型液体硅橡胶(LSR)。采用傅立叶变换红外光谱(FT-IR)及核磁共振波谱(1H NMR)对PHMS-g-HDDA的结构进行了表征;研究了PHMS-g-HDDA用量对LSR的黏度、力学性能、硫化特性及与聚碳酸酯、对苯二甲酸乙二醇酯及热塑性聚氨酯粘接性能的影响。结果表明,PHMS-g-HDDA可显著提高LSR的粘接性能,且对LSR的黏度、力学性能和硫化特性有明显影响。当PHMS-g-HDDA用量为0.9份时,硅橡胶的综合性能较为理想。此时硅橡胶的拉伸强度为5.3MPa、拉断伸长率为380%、撕裂强度为14.7 kN/m、邵尔A硬度为47.6度;焦烧时间及正硫化时间最小,分别为51 s和68 s;与各种基材的粘接性良好。A novel ester group containing silicone adhesive promoter, PHMS-g-HDDA, was synthesized by grafting 1,6-hexanediol diacrylate （HDDA） onto poly （hydridomethylsiloxane） （PHMS） via hydrosilylation. The chemical structure of PHMS-g-HDDA was characterized by Fourier transform infrared spectroscopy （FT-IR） and ^1H nuclear magnetic resonance spectroscopy （1H-NMR）. The effect of the PHMS-g-HDDA content on the adhesive performance between addition-cure liquid silicone rubber （LSR） and polycarbonate （ PC）, poly （ ethylene terephthalate） （ PET）, thermoplastic polyurethane （TPU） was investigated. Moreover, the effect of the PHMS-g-HDDA content on the viscosity, mechanical properties and curing characteristics of the ALSR was also studied. Results showed that PHMS-g-HDDA could remarkably impact on the performance and viscosity of adhesive, mechanical and curing properties of the ALSR. The comprehensive properties of ALSR were optimized when the content of PHMS-g-HDDA was 0.9 phr, the silicone rubber had a tensile strength of 5.3 MPa, a tensile elongation of 380%, Shore A hardness of 47.6, the minimum scorch time （tl0） of 51s and curing time （t90） of 68 s, and good adhesion with various base materials.

关 键 词：有机硅 增粘剂 酯基 硅氢加成反应 加成型 液体硅橡胶 

分 类 号：TQ333.93[化学工程—橡胶工业]