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改性聚乙烯醇(WR-14)对聚醋酸乙烯酯乳液性能的影响     被引量:2

Influences of modified PVA(WR-14)on properties of PVAc emulsion

文献类型:期刊文献

中文题名:改性聚乙烯醇(WR-14)对聚醋酸乙烯酯乳液性能的影响

英文题名:Influences of modified PVA(WR-14)on properties of PVAc emulsion

作者:程增会[1] 林永超[2] 刘美红[1] 刘玉鹏[1] 王春鹏[1,3]

第一作者:程增会

机构:[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业局林产化学工程重点开放性实验室,江苏省生物质能源与材料重点实验室;[2]南京理工大学化工学院;[3]中国林业科学研究院林业新技术研究所

年份:2015

卷号:24

期号:2

起止页码:1-5

中文期刊名:中国胶粘剂

外文期刊名:China Adhesives

收录:CSTPCD;;北大核心:【北大核心2014】;

基金:中央级公益性科研院所基本科研业务费专项资金项目(CAFINT2010K04)

语种:中文

中文关键词:聚乙烯醇;聚醋酸乙烯酯;乳液;胶粘剂;耐水性

外文关键词:polyvinyl alcohol(PVA) ; polyvinyl acetate(PVAc) ; emulsion ; adhesive ; water resistance

分类号:TQ433.433

摘要:以WR-14[乙酰乙酰化改性PVA(聚乙烯醇)]作为保护胶体,制备了耐水PVAc(聚醋酸乙烯酯)乳液,考察了WR-14掺量对PVAc乳液性能的影响。研究结果表明:当m(PVA)∶m(VAc)=(7~9)∶100时,相应乳液具有相对最好的储存稳定性;乳液黏度随PVA掺量增加而提高,并且WR-14与其他适宜类型的PVA复配使用后,能有效调节乳液的黏度;聚合过程中乳液粒径从200 nm左右增至1 400 nm左右,WR-14能有效降低PVAc胶膜的吸水率;PVAc胶接件经常温水浸泡4 d、沸水蒸煮6 h后的湿态粘接强度均随WR-14掺量增加而增大,并且在m(WR-14)∶m(总PVA)=2∶4时分别为2.8、0.9 MPa。
A PVAc (polyvinyl acetate) emulsion with water resistance was prepared by WR- 14[acetyl acetylation modified PVA (polyvinyl alcohol)] as protective colloid, and the influences of WR-14 contents on properties of PVAc emulsion were investigated. The research results showed that the corresponding emulsion has the relatively best storage stability when mass fraction of m (PVA) : m (VAc) was (7- 9) : 100. The emulsion viscosity was increased with increasing PVA contents, and the blend between WR-14 and other suitable types PVA could effectively regulate the emulsion viscosity. The emulsion particle sizes in polymerization process were increased from about 200 nm to about 1 400 nm, and W-R-14 could effectively reduce the water absorption of PVAc film. The wet bonding strengths of PVAc glued joints, which were treated by 4 d in water(room temperature) or 6 h in boiling water, were increased with increasing WR-.14 contents, and both were 2.8,0.9 MPa respectively when mass ratio of m(WR-14) :re(total PVA) was 2:4.

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