Using methyl methacrylate （MMA）, butyl acrylate（BA） and hexafluorobutyl acrylate（HFBA） as main raw materials, we prepared self-crosslinked fluorocarbon polymer emulsion with core-shell structure via soap-free em...Using methyl methacrylate （MMA）, butyl acrylate（BA） and hexafluorobutyl acrylate（HFBA） as main raw materials, we prepared self-crosslinked fluorocarbon polymer emulsion with core-shell structure via soap-free emulsion polymerization when the conception of particle design and polymer morphology was adopted. Moreover, the influence of mole ratio of BA to MAA, pH value on the oligomer was studied. And the effects of the added amount of oligomer, self-crosslinked monomer and HFBA, mass ratio of BA to MMA, reaction temperature and the initiator on the polymerization technology and the performance of the product, were investigated and optimized. The structure and performance of the fluorocarbon polymer emulsion were characterized and tested with FTIR, TEM, MFT and contact angle and water absorption of the latex film. The experimental results show that the optimal conditions for preparing fluorocarbon polymer emulsion are as follows： for preparing the oligomer, tool ratio of BA to MAA is equal to 1.0 ： 1.60, and pH value is controlled within the range of 8.0 and 9.0; for preparing fluorocarbon polymer emulsion, the added amount of oligmer[P（BA/MANa）] is 6%; mass ratio of BA to MMA is 40 ＂ 60; the added amount of self-crosslinked monomer is 2%, the added amount of HFBA is 15 %; reaction temperature is 80 ℃; the mixture of potassium persulfate and sodium bisulfite is used as the initiator. The film-forming stability of the fluorocarbon polymer emul- sion and the performance of the latex film, which is prepared with the soap-free emulsion polymerization, are better than that prepared with the conventional emulsion polymerization.展开更多
向聚丙烯酸酯聚合物中同时加入侧链取向向外的含氟单体及长碳链十八醇酯,可提高涂层的耐水、耐油及耐候性。采用半连续种子乳液聚合法,合成了一种核壳型含氟丙烯酸酯(FPAE)乳液。采用红外光谱(IR)、透射电微镜(TEM)、粒度分布仪及电位...向聚丙烯酸酯聚合物中同时加入侧链取向向外的含氟单体及长碳链十八醇酯,可提高涂层的耐水、耐油及耐候性。采用半连续种子乳液聚合法,合成了一种核壳型含氟丙烯酸酯(FPAE)乳液。采用红外光谱(IR)、透射电微镜(TEM)、粒度分布仪及电位仪等对其性能进行了测试与表征。将FPAE乳液与纳米Ti O2及各种助剂等复配制成氟碳涂料,对涂料涂层性能进行了综合评价。结果表明:FPAF具有预期的核壳结构,乳液平均粒径为114nm,Zeta电位为-54.8 m V;氟碳涂层表面与水的静态接触角可达113°,耐水性、耐酸碱性、硬度、附着力等优良。展开更多
基金Funded by the Jiangsu Provincial Creative Fund for Scientific and Tech-nical Small and Medium-size Enterprise
文摘Using methyl methacrylate （MMA）, butyl acrylate（BA） and hexafluorobutyl acrylate（HFBA） as main raw materials, we prepared self-crosslinked fluorocarbon polymer emulsion with core-shell structure via soap-free emulsion polymerization when the conception of particle design and polymer morphology was adopted. Moreover, the influence of mole ratio of BA to MAA, pH value on the oligomer was studied. And the effects of the added amount of oligomer, self-crosslinked monomer and HFBA, mass ratio of BA to MMA, reaction temperature and the initiator on the polymerization technology and the performance of the product, were investigated and optimized. The structure and performance of the fluorocarbon polymer emulsion were characterized and tested with FTIR, TEM, MFT and contact angle and water absorption of the latex film. The experimental results show that the optimal conditions for preparing fluorocarbon polymer emulsion are as follows： for preparing the oligomer, tool ratio of BA to MAA is equal to 1.0 ： 1.60, and pH value is controlled within the range of 8.0 and 9.0; for preparing fluorocarbon polymer emulsion, the added amount of oligmer[P（BA/MANa）] is 6%; mass ratio of BA to MMA is 40 ＂ 60; the added amount of self-crosslinked monomer is 2%, the added amount of HFBA is 15 %; reaction temperature is 80 ℃; the mixture of potassium persulfate and sodium bisulfite is used as the initiator. The film-forming stability of the fluorocarbon polymer emul- sion and the performance of the latex film, which is prepared with the soap-free emulsion polymerization, are better than that prepared with the conventional emulsion polymerization.
文摘向聚丙烯酸酯聚合物中同时加入侧链取向向外的含氟单体及长碳链十八醇酯,可提高涂层的耐水、耐油及耐候性。采用半连续种子乳液聚合法,合成了一种核壳型含氟丙烯酸酯(FPAE)乳液。采用红外光谱(IR)、透射电微镜(TEM)、粒度分布仪及电位仪等对其性能进行了测试与表征。将FPAE乳液与纳米Ti O2及各种助剂等复配制成氟碳涂料,对涂料涂层性能进行了综合评价。结果表明:FPAF具有预期的核壳结构,乳液平均粒径为114nm,Zeta电位为-54.8 m V;氟碳涂层表面与水的静态接触角可达113°,耐水性、耐酸碱性、硬度、附着力等优良。
