【摘要】：以不同離子型和不同HLB(親水親油平衡)值的外乳化劑作為試驗(yàn)對象,采用內(nèi)乳化-外乳化法合成高固含量的WPU(水性聚氨酯)分散體。研究結(jié)果表明:當(dāng)外乳化劑在預(yù)聚體乳化前加入且w(陰離子型外乳化劑)≤2%(相對于反應(yīng)原料質(zhì)量而言)時(shí),可獲得黏度適中、儲存穩(wěn)定、耐介質(zhì)性能和力學(xué)性能較好的高固含量WPU。
[Abstract]:The high solid content WPU (waterborne polyurethane) dispersions were synthesized by internal emulsification and external emulsification with different ionic type and different HLB (hydrophilic and lipophilic equilibrium) as experimental object. The results show that when the external emulsifier is added before the emulsification of the prepolymer and w (anionic external emulsifier) 鈮，

本文編號：2403333