【摘要】 用聚四氢呋喃二醇(PTMG)、异佛尔酮二异氰酸酯(IPDI)、二羟甲基丙酸(DMPA)为预聚物反应单体,以2-[(2-氨乙基)氨基]乙磺酸钠(A95)、水合肼为后扩链剂,利用预聚体分散法制备水性聚氨酯(WPU)消光树脂分散体,探讨了扩链剂种类及用量、R值等对WPU膜光泽的影响。更多还原

【Abstract】 In this paper,a low gloss waterborne polyurethane( WPU) dispersion was prepared by prepolymer dispersing process with isophorone diisocyanate( IPDI) and polytetramethylene glycol( PTMG) as main materials,and dimethylol propionic acid( DMPA) as hydrophilic chain extender,and 2-[( 2-aminoethyl) amino]ethyl sodium sulfonate( A95) and hydrazine hydrate as small molecule chain extender. The influence of varieties and amount of chain extenders,R value and A95 content on WPU film gloss were discussed.更多还原