CAJ | 학술논문

以异佛尔酮二异氰酸酯（ IPDI ）、聚醚胺D-2000、二羟甲基丙酸（ DMPA ）、丙烯酸羟乙酯（ HEA）为原料，合成双键封端的聚脲预聚体，再通过种子乳液聚合法，与丙烯酸酯单体聚合，制备聚脲/丙烯酸酯（ PUAA）乳液。研究了R值、DMPA用量以及聚脲（ PUA）与聚丙烯酸酯（ PA）质量比对合成乳液稳定性、耐水性、力学性能等的影响。红外光谱分析表明聚脲与丙烯酸酯成功接枝。实验结果表明：R值为1?6时，乳胶膜吸水率最低；而随R值增大，乳胶膜的拉伸强度增大，断裂伸长率减少。实验优选DMPA的用量占PUA预聚体的5?0％，PUA与PA质量比为2∶3～1∶2，制得的PUAA乳液稳定，吸水率低，力学性能好。
이이불이동이이청산지（ IPDI ）、취미알D-2000、이간갑기병산（ DMPA ）、병희산간을지（ HEA）위원료，합성쌍건봉단적취뇨예취체，재통과충자유액취합법，여병희산지단체취합，제비취뇨/병희산지（ PUAA）유액。연구료R치、DMPA용량이급취뇨（ PUA）여취병희산지（ PA）질량비대합성유액은정성、내수성、역학성능등적영향。홍외광보분석표명취뇨여병희산지성공접지。실험결과표명：R치위1?6시，유효막흡수솔최저；이수R치증대，유효막적랍신강도증대，단렬신장솔감소。실험우선DMPA적용량점PUA예취체적5?0％，PUA여PA질량비위2∶3～1∶2，제득적PUAA유액은정，흡수솔저，역학성능호。
The double terminated polyurea( PUA) propolymer was synthesized firstly using IPDI、D-2000、DM-PA and HEA, then PUAA emulsion was synthesized with acrylate monomers by seed emulsion polymerization. The effects of R value, DMPA content and the mass ratio of PUA/PA on the emulsion performance and their films were studied. FTIR analysis showed the PUA and PA was grafted successfully. The results showed that the water absorp-tion of PUAA film was the lowest when R was 1?6. In addition, with R value increased, PUAA film?s tensile strength increased and the elongation at break decreased. The PUA emulsion was stability, having low water ab-sorption and good mechanical performance when the experimental optimization condition was DMPA content 5% in polyurea prepolymer and PUA/PA mass ratio 2∶3~1∶2 .