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对乳液接枝-本体SAN(苯乙烯、丙烯腈共聚物)掺混法ABS(丙烯腈-丁二烯-苯乙烯共聚物)装置聚丁二烯(PB)胶乳生产工艺进行研究,分析一步法工艺、两步法化学附聚工艺、两步法压力附聚工艺的技术特点及在工业装置中的应用概况。在浙江石油化工有限公司新建40万t/a ABS装置中,优化组合设计聚丁二烯胶乳生产工艺,建立了一步法、两步法相结合的工艺流程,实现对聚丁二烯胶乳品质的灵活控制,使ABS树脂产品的性能可以根据市场需求进行调整。 相似文献
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中国石油吉林石化公司研究院开发成功的聚丁二烯胶乳制备方法日前获国家发明专利。采用该技术制得的ABS树脂具有优良的抗冲击等综合性能。 相似文献
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乳液聚合生产聚丁二烯胶乳聚合过程的研究 总被引:2,自引:0,他引:2
在工业生产中,以丁二烯为单体,采用分段控制温度和一步法合成乳聚聚丁二烯胶乳,各段聚合速率为1.75%.h^-1,1.30%.h^-1,0.86%.h^-1。结果表明,当转化率小于55%时,胶乳粒径逐渐增大,粒径的分散度和粒子的扩散系统缓慢降低;转化率大于55%时,粒径和扩散系数变化很小,分散度则急剧下降。随着转化率的增加,聚合物的1,2-结构含量不变,顺-1,4和反-1,4结构含量呈无规律的变化, 相似文献
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胶乳附聚法放大聚丁二烯胶乳粒径的进展 总被引:6,自引:0,他引:6
在介绍功能胶乳粒子放大技术基础上,着重叙述用聚丙烯酸酯乳液附聚丁二烯类胶乳制备大粒径的功能乳液的方法。采用胶乳附聚法新工艺有利于提高ABS等树脂市场竞争力和功能胶乳商品化。 相似文献
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以丙烯酸酯类共聚物乳液作为聚合物乳液附聚剂,采用在线静态混合器对粒径为100.5 nm的小粒径聚丁二烯胶乳(PBL)进行附聚,并与采用传统附聚器间歇附聚法PBL进行了对比,对用2种方法获得的丙烯腈-丁二烯-苯乙烯(ABS)树脂的性能进行了比较。结果表明,采用静态混合器在线附聚法,可得到粒径呈双峰分布、有效粒径为298.3 nm、多分散性指数为0.316的大粒径PBL;而在同样条件下采用附聚器间歇附聚法,所得PBL粒径也呈双峰分布,有效粒径为268.4 nm,多分散性指数为0.359,可见静态混合器在线附聚效果好于附聚器间歇附聚法。采用静态混合器在线附聚法获得的ABS树脂,其抗冲击性能优于附聚器间歇附聚法ABS树脂。 相似文献
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ABS树脂生产技术进展 总被引:6,自引:1,他引:5
论述了ABS生产技术和高功能化ABS,重点阐述了聚丁二烯胶乳合成技术和连续本体工艺,并对各种生产工艺进行了技术经济分析与比较。介绍了我国ABS生产工艺,新产品开发和市场态势。 相似文献
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An ambient curable isocyanate functional acrylic latex was synthesized by incorporating dimethyl meta-isopropenyl benzyl isocyanate (TMI®), an isocyanate monomer, into styrene/n-butyl acrylate copolymer. An artificial latex of amino-terminated telechelic polybutadiene was prepared and blended with the acrylic latex as a curing agent. The isocyanate content in the blended latex was determined by titration and FTIR measurements. The latex blend properties, in terms of particle size and latex viscosity, and the latex film properties, in terms of stress–strain behavior and solvent swelling behavior, showed no significant change after 30 days' storage of the latex blend at 50°C. The good storage stability was attributed to the stable nature of the latex blend in which there was little chance for the isocyanate-containing particles to come into contact with the curing agent particles, thus preventing premature contact of the acrylic chains with the telechelic chains. The reactivity of different functional groups in the telechelic polymer was studied; the amino group was found to be the most reactive toward the TMI. In addition, a shorter chain telechelic crosslinker was found to result in a higher degree of crosslinking, but this was more intraparticle than interparticle in nature. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 965–975, 1998 相似文献
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Polybutadiene latex (PBL) was agglomerated by highly carboxylated core-shell agglomerating agents, which contained carboxyl groups in the shell polymer [core monomers (methyl methacrylate, n-butyl acrylate, and ethyl acrylate)/shell monomer (acrylic acid)]. The effects of different parameters upon the particle size of agglomerated PBL were investigated, namely, agglomeration time, amount of agglomerating agent, pH of dispersion medium, amount of acrylic acid and combination of core monomers. The particle growth mechanism was also examined. © 1999 Society of Chemical Industry 相似文献
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