凝聚剂组成对G-ABS高胶粉及ABS外观特性的影响  

Influence of coagulant composition on appearance characteristics of G-ABS high glue powder and ABS

作　　者：刘姜[1,2] 李柏静[1,2] 于万权 姜山 张辉[1,2] 陆书来 Liu Jiang;Li Bojing;Yu Wanquan;Jiang Shan;Zhang Hui;Lu Shulai(Research Institute of Jilin Petrochemical Branch of China National Petroleum Corporation,Jilin 132021,China;ABS Technology Center of China National Petroleum Corporation,Jilin 132021,China)

机构地区：[1]中国石油天然气股份有限公司吉林石化分公司研究院,吉林吉林132021 [2]中国石油天然气股份有限公司ABS技术中心,吉林吉林132021

出　　处：《合成树脂及塑料》2024年第4期19-23,共5页China Synthetic Resin and Plastics

摘　　要：在使用凝聚剂从聚丁二烯与丙烯腈和苯乙烯的接枝共聚物(G-ABS)胶乳中回收G-ABS高胶粉的过程中,凝聚剂组成不但会改变高胶粉的粒径,还会对丙烯腈-丁二烯-苯乙烯三元共聚物(ABS)粒料的白度和色度稳定性造成影响。以冰乙酸/硫酸镁、硫酸/硫酸镁为凝聚剂,通过调整阳离子的配比,对比2组凝聚剂对G-ABS高胶粉和ABS外观特性的影响。结果表明:在确保凝聚浆液为酸性时,减少凝聚剂阳离子中H+占比,对粉料筛分粒径分布、氧化诱导时间没有明显影响,但ABS白度、热氧老化色度稳定性和粒料储存色度稳定性均有提升;与使用硫酸相比,使用冰乙酸能够显著提升ABS白度和热氧老化色度稳定性。The composition of coagulants not only changes the particle size of grafted acrylonitrile-butadiene-styrene copolymer(G-ABS)high glue powder but also affects the whiteness and color stability of acrylonitrile-bufadiene-styrene terpolymer(ABS)in the process of recovering G-ABS high glue powder from G-ABS latex with coagulants.Mixed coagulants composed of glacial acetic acid/magnesium sulfate,sulfuric acid/magnesium sulfate were used to compare the effects of the two coagulants on the powder and ABS appearance by adjusting the ratio of cations.The results show that reducing the proportion of H+in the coagulant does not significantly affect the particle size distribution and oxidation induction time of the powder when ensuring the acidity of the condensed slurry.The whiteness,thermal oxidative aging color stability,and particle storage color stability of ABS are all improved.The use of glacial acetic acid can significantly improve the whiteness and thermal oxidative aging color stability of ABS compared with sulfuric acid.

关 键 词：高胶粉 凝聚剂组成 白度 色度稳定性 

分 类 号：TQ332[化学工程—橡胶工业]