聚氨酯工业
聚氨酯工業
취안지공업
POLYURETHANE INDUSTRY
2014年
5期
22-25
,共4页
高固含量%有机硅%聚氨酯乳液
高固含量%有機硅%聚氨酯乳液
고고함량%유궤규%취안지유액
high solid content%organic silicon%polyurethane emulsion
以含硅的多元醇（PES）和聚醚二醇（PPG）为软链段，甲苯二异氰酸酯（TDI）和复合亲水扩链剂1，2-二羟基-3-丙磺酸钠（ DHPS）和二羟甲基丙酸（ DMPA）为硬链段，以γ-氨丙基三甲氧基硅烷（KH-540）作为封端剂，采用自乳化法制备了一系列高固含量有机硅/聚氨酯复合分散体（Si/PU）。分析了PES和PPG质量比和KH-540含量对分散体性能的影响。结果表明，所得分散体的粒径呈多元分布，乳胶粒子呈核壳结构。随着PES/PPG质量比和KH-540含量的增大，乳胶粒平均粒径增大，粒度分布变宽，固体质量分数基本能达到50％以上，粘度均小于400 mPa·s，当PES/PGG值为1∶3，KH-540质量分数为1％时，固体质量分数高达55?8％；另外，胶膜具有较好的表面性能。
以含硅的多元醇（PES）和聚醚二醇（PPG）為軟鏈段，甲苯二異氰痠酯（TDI）和複閤親水擴鏈劑1，2-二羥基-3-丙磺痠鈉（ DHPS）和二羥甲基丙痠（ DMPA）為硬鏈段，以γ-氨丙基三甲氧基硅烷（KH-540）作為封耑劑，採用自乳化法製備瞭一繫列高固含量有機硅/聚氨酯複閤分散體（Si/PU）。分析瞭PES和PPG質量比和KH-540含量對分散體性能的影響。結果錶明，所得分散體的粒徑呈多元分佈，乳膠粒子呈覈殼結構。隨著PES/PPG質量比和KH-540含量的增大，乳膠粒平均粒徑增大，粒度分佈變寬，固體質量分數基本能達到50％以上，粘度均小于400 mPa·s，噹PES/PGG值為1∶3，KH-540質量分數為1％時，固體質量分數高達55?8％；另外，膠膜具有較好的錶麵性能。
이함규적다원순（PES）화취미이순（PPG）위연련단，갑분이이청산지（TDI）화복합친수확련제1，2-이간기-3-병광산납（ DHPS）화이간갑기병산（ DMPA）위경련단，이γ-안병기삼갑양기규완（KH-540）작위봉단제，채용자유화법제비료일계렬고고함량유궤규/취안지복합분산체（Si/PU）。분석료PES화PPG질량비화KH-540함량대분산체성능적영향。결과표명，소득분산체적립경정다원분포，유효입자정핵각결구。수착PES/PPG질량비화KH-540함량적증대，유효립평균립경증대，립도분포변관，고체질량분수기본능체도50％이상，점도균소우400 mPa·s，당PES/PGG치위1∶3，KH-540질량분수위1％시，고체질량분수고체55?8％；령외，효막구유교호적표면성능。
A series high-solid-content polyurethane-silicone compound dispersions were prepared by self-emul-sification, which were modified with γ-aminopropyl methyldimethyoxysilane ( KH-540 ) as a blocking agent, the self-made silicon polyether (PES) and propylene oxide glycol(PPG)as soft segments, toluene diisocyanate(TDI) as hard segment, 1,2-dihydroxy-3-propanesulfonic acid salt(DHPS) and dimethylol propionic acid (DMPA)as hy-drophilic chain-extending agents. Influences of KH-540 content and weight ratio of PES and PPG on properties of polyurethane dispersions were analyzed. Results showed that the dispersions possessed characteristic of multivariate distribution and core-shell structure in particle size. With increasing of PES/PPG weight ratio and KH-540 content, polyurethane dispersions possessed higher average particles diameter, wider particle size distribution, solid content 50% and viscosity 400 mPa·s. When the weight ratio of PES and PPG was 1∶3 and KH-540 content was 1%, the solid content of dispersions was up to 55?8%. The film had good surface properties.
