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采用细乳液聚合法制备了二氧化钛/聚甲基丙烯酸甲酯(TiO2/PMMA)纳米复合粒子,研究了引发剂、助乳化剂、乳化剂、单体结构对TiO2/PMMA纳米复合粒子性能的影响。结果表明,十六烷(HD)比十二醇和十六醇更能有效抑制甲基丙烯酸甲酯(MMA)液滴在水相中的Ostwald熟化效应,当MMA占TiO2质量的60%,HD占单体质量的6%,可聚合乳化剂1-烯丙氧基-3-(4-壬基苯酚)-2-丙醇聚氧乙烯(10)醚硫酸铵(DNS-86)占整个体系质量的2%时,制备TiO2/PMMA纳米复合粒子分散体的粒径为185 nm,此时TiO2/PMMA纳米复合粒子与细乳液粒径差距较小;采用TiO2/PMMA纳米复合粒子制备喷墨印花用白色涂料墨水的稳定性和遮盖力明显优于同等条件下TiO2所制备的涂料墨水。
The TiO2 / PMMA nanocomposite particles were prepared by miniemulsion polymerization. The effects of initiator, co-emulsifier, emulsifier and monomer structure on the properties of TiO2 / PMMA nanocomposite particles were investigated. The results showed that hexadecane (HD) was more effective than dodecanol and cetyl alcohol in inhibiting the Ostwald ripening effect of MMA droplets in the aqueous phase. When MMA accounted for 60% of TiO2, HD accounted for 6% of the monomer mass, the polymerizable emulsifier 1-allyloxy-3- (4-nonylphenol) -2-propanol polyoxyethylene (10) ether ammonium sulfate , The particle size of TiO2 / PMMA nanocomposite dispersion was 185 nm, the difference of particle size between TiO2 / PMMA nanocomposite particles and miniemulsion was small. TiO2 / PMMA nanocomposite particles were used to prepare inkjet printing The stability and hiding power of white coating ink is obviously better than the coating ink prepared by TiO2 under the same conditions.