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摘要
以甲基丙烯酸十二氟庚酯(GO4)为改性单体,采用核壳乳液聚合工艺合成有机氟改性的苯丙乳液。研究了改性剂用量、乳化剂用量及其配合比、引发剂用量对单体转化率等综合性能的影响。研究结果表明,采用有机氟改性的苯丙乳液涂层性能明显提高。在改性剂(甲基丙烯酸十二氟庚酯,GO4)用量为6%(wt,质量分数),混合乳化剂(由OP-10∶SDS的质量配合比为1∶3组成)用量为8%(wt,质量分数),引发剂(过硫酸铵)用量为0.8%(wt,质量分数)条件下,制得的氟改性苯丙乳液的粒子大小均一,呈规则球形,为黑核白边的核壳结构,氟改性苯丙乳液的单体的转化率达到97.08%。
Abstract
The organofluorine-modified styrene-acrylic emulsion was synthesized by a core-shell emulsion polymerization process using dodecafluoroheptyl methacrylate (GO4) as a modified monomer.The effects of modifier dosage,emulsifier dosage and its blending ratio,initiator dosage on monomer conversion rate and other comprehensive properties were studied.Study shown that the performance of styrene-acrylic emulsion coatings modified with organic fluorine was significantly improved.When modifier (dodecyl heptyl methacrylate,GO4) usage was 6% (wt,mass fraction),mixed emulsifier (combined by OP-10∶SDS mass ratio of 1∶3) was 8% (wt,mass fraction),and the initiator ammonium persulfate usage was 0.8% (wt,mass fraction),the particle size of the emulsion was uniform rules and spherical.The emulsion had black core-shell structure with white lace,the monomer conversion rate of the emulsion reached 97.08%.
关键词
有机氟
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核壳结构
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改性苯丙乳液
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单体转化率
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涂层性能
Key words
organic fluorine
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core-shell structure
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modified styrene-acrylic emulsion
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monomer conversion rate
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coating property
氟改性丙烯酸系乳液的合成与性能研究[J].
化工新型材料, 2019, 47(10): 250-254 DOI:
[1] Cao S S,Jin X,Yuan X H,et al.A facile method for the preparation of monodisperse hollow silica spheres with controlled shell thickness[J].Journal of Polymer Science Part-Polymer Chemistry,2010,48(6):1332-1338.
[2] 芦春燕,曹国荣.含氟丙烯酸酯共聚物乳液的制备与性能研究[J].包装工程,2014,35(23):74-78.
[3] 康剑姝,张发爱.聚合单体对乳化剂临界胶束浓度和表面张力的影响[J].胶体与聚合物,2011,29(3):102-105.
[4] 裴世红,徐方园,赵月,等.氟硅改性苯丙乳液的制备及其性能研究[J].涂料工业,2016,46(5):44-48.
[5] 王竹青,葛圣松,邵谦.乳液聚合中乳胶粒粒径大小及分布的影响因素[J].胶体与聚合物,2008,28(4):28-31.
[6] 李冬红,范永将,李彤霞,等.乳化沥青改性用丁苯胶乳的合成[J].合成橡胶工业,2011,34(4):253-255.
[7] 刘贵.有机硅改性丙烯酸乳液及其水性防腐涂料的研制[D].上海:华东理工大学,2012.
基金资助
国家自然科学基金项目(61102041)
