山西化工
山西化工
산서화공
SHANXI CHEMICAL INDUSTRY
2011年
6期
5-8
,共4页
水性聚氨酯%预聚体%制备
水性聚氨酯%預聚體%製備
수성취안지%예취체%제비
water-borne polyurethane%prepolymer%synthesis technology
通过一系列单因素平行实验,对水性聚氨酯分散体合成工艺中反应温度、溶剂、异佛尔酮二异氰酸酯（IPDI）和甲苯二异氰酸酯（TDI）的选择、聚四氢呋喃二醇（PTMG）相对分子质量等因素与水性聚氨酯的黏度、颜色、透明性等性能的关系进行了研究。结果表明,二羟甲基丙酸（DMPA）含量的大小直接影响产品的相对分子质量和体系黏度;反应温度是敏感因素,聚合反应温度在50℃～55℃。
通過一繫列單因素平行實驗,對水性聚氨酯分散體閤成工藝中反應溫度、溶劑、異彿爾酮二異氰痠酯（IPDI）和甲苯二異氰痠酯（TDI）的選擇、聚四氫呋喃二醇（PTMG）相對分子質量等因素與水性聚氨酯的黏度、顏色、透明性等性能的關繫進行瞭研究。結果錶明,二羥甲基丙痠（DMPA）含量的大小直接影響產品的相對分子質量和體繫黏度;反應溫度是敏感因素,聚閤反應溫度在50℃～55℃。
통과일계렬단인소평행실험,대수성취안지분산체합성공예중반응온도、용제、이불이동이이청산지（IPDI）화갑분이이청산지（TDI）적선택、취사경부남이순（PTMG）상대분자질량등인소여수성취안지적점도、안색、투명성등성능적관계진행료연구。결과표명,이간갑기병산（DMPA）함량적대소직접영향산품적상대분자질량화체계점도;반응온도시민감인소,취합반응온도재50℃～55℃。
Based on a series of single-factor-experiment tests,the synthesis technology of water-borne polyurethane was studied.The effects of the content of DMPA,emulsion,temperature and the choice of TDI and IPDI on the sample＇s properties were investigated.In order to prepare the polymer with excellent properties and storage stability,the correlation of different factors was studied and the conclusions were reached as follows： the content of DMPA was a key factor,the molecular weight of the product would be small,the viscosity was high and the water-solubility was poor when the value of DMPA was large.The temperature and reaction time of pre-polymerization were sensitive factors.The time was about 2 hours and the temperature was 50 ℃~55 ℃.
