CAJ | 학술논문

以三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)为交联单体，采用半连续种子乳液聚合法，以甲基丙烯酸甲酯(MMA)和丙烯酸丁酯(BA)为主要单体合成了核壳型聚丙烯酸酯乳液，研究了核层TMPTMA含量对乳液及胶膜性能的影响。结果表明，在一定范围内，随着核层TMPTMA含量的增加，乳胶粒子的平均粒径减小，凝聚率增大；胶膜的拉伸强度及断裂伸长率均增大，与水的接触角变小；在反应条件、单体种类及配比相同的情况下，核壳型丙烯酸酯乳胶膜比非核壳型乳胶膜的杨氏模量及拉伸强度明显变大。
이삼간갑기병완삼갑기병희산지(TMPTMA)위교련단체，채용반련속충자유액취합법，이갑기병희산갑지(MMA)화병희산정지(BA)위주요단체합성료핵각형취병희산지유액，연구료핵층TMPTMA함량대유액급효막성능적영향。결과표명，재일정범위내，수착핵층TMPTMA함량적증가，유효입자적평균립경감소，응취솔증대；효막적랍신강도급단렬신장솔균증대，여수적접촉각변소；재반응조건、단체충류급배비상동적정황하，핵각형병희산지유효막비비핵각형유효막적양씨모량급랍신강도명현변대。
With trimethylolpropane trimethacrylate (TMPTMA) as cross-linking agent of core,polyacrylate emulsion with core-shell structure was prepared by semi-continuous seed emulsion copoly-merization using butyl acrylate (BA) and methyl methacrylate (MMA) as main monomers. The effects of TMPTMA content of core on properties of polyacrylate emulsion and film were studied. The results show that in a certain range,with increasing of TMPTMA content of core, average particles size of polyacrylate emulsion became smaller and the gel increase. The tensile strength and breaking elongation of film are increased with TMPTMA content increasing, however,water contact angles become smaller. Young modulus and tensile strength of core-shell acrylate emulsion film increase obviously than non core-shell latex emulsion film,which was synthetised using the same kind and dosage of monomers at the same condition.