玻璃纤维网格布用核壳型丙烯酸酯乳液的制备  

Preparation of Core-Shell Emulsion Polymers for Fiberglass Mesh

作　　者：居宏伟[1] 王小兵[1] 林中祥[1] 

机构地区：[1]南京林业大学化工学院,江苏南京210037

出　　处：《化学与粘合》2006年第1期20-24,共5页Chemistry and Adhesion

摘　　要：玻璃纤维网格布作为水泥增强材料,需要其具有柔软、定位好、强度高及耐碱腐蚀的优点,现有的玻璃纤维网格布用丙烯酸酯乳液涂层存在着“热黏冷脆”、强度及耐碱保留率不高的缺点。本文通过核壳丙烯酸酯乳液聚合的方法,在壳层聚合中引入有机硅偶联剂,可制得一种能很好地满足产品性能要求的乳液涂层。结果发现,采用核的玻璃化温度(Tg)为-45℃、壳的玻璃化温度(Tg)为20℃、壳与核的质量比为5/4、加入3%的N-羟甲基丙烯酰胺和占壳层单体量4%的有机硅偶联剂,制得的乳液涂层具有较好的柔软性、不黏连、强度高、耐碱保留率可达85.2%。Fiberglass mesh should have properties such as softness, high strength and good alkali- resistivity as reinforced materials in concrete. The conventional emulsion coating for fiberglass mesh was tacky in hot circumstance and brittle in cold circumstance. It is also poor in strength and easy corroded.Emulsion coating having excellent properties was prepared by core - shell polymerizing and introducing an organosilicon coupler to copolymerize with shell polymer.The emulsion coating showed good softness, high blocking resistance and high strength,and the alkali - resistivity keeping rate reach 85.2% when the Tg of core polymer was -45℃ ,the Tg of shell potymer .was 20℃ ,the mass ratio of shell to core was 5/4 and 3% N- hydroxymethylacrylamide and 4% organosilicon coupler based on shell monomer were introduced.

关 键 词：核壳乳液 玻璃纤维网格布 有机硅偶联剂 耐碱保留率 

分 类 号：TQ433.436[化学工程]