CAJ | 학술논문

采用预聚体法合成无溶剂水性聚氨酯。探讨了扩链剂的添加顺序，nNCO／nOH比例、二羟甲基丙酸（DMP））含量等因素对水性聚氨酯乳液性能的影响。结果表明：当nNCO／nOH比例为1.3左右，DMPA用量为6％，先添加亲水性扩链剂DMPA时，乳液的综合性能最佳。
채용예취체법합성무용제수성취안지。탐토료확련제적첨가순서，nNCO／nOH비례、이간갑기병산（DMP））함량등인소대수성취안지유액성능적영향。결과표명：당nNCO／nOH비례위1.3좌우，DMPA용량위6％，선첨가친수성확련제DMPA시，유액적종합성능최가。
Solvent-free waterborne polyurethane was synthesized by adopting prepolymer method. The influence on the properties of an aqueous polyurethane emulsion effect such as the adding order of the chain extender, nNCO/nOH proportion and the content of dimethylol propionic acid (DMPA) were studied. The results show that the emulsion has the optimum comprehensive properties when the nNCO/nOH was around 1.3, the dosage of DMPA is 6%, and firstly add the hydrophilic chain extender DMPA.