聚氨酯工业
聚氨酯工業
취안지공업
POLYURETHANE INDUSTRY
2014年
6期
34-37
,共4页
聚脲%弹性体%耐磨性能
聚脲%彈性體%耐磨性能
취뇨%탄성체%내마성능
polyurea%elastomer%abrasion resistance
由不同二元醇与二异氰酸酯合成不同NCO含量的半预聚体（ A组分）与端氨基聚醚、胺扩链剂等原料组成的R组分经喷涂设备喷涂成型聚脲弹性体。讨论了在不同摩擦工况下NCO含量、异氰酸酯指数、预聚物类型、耐磨助剂等对聚脲弹性体耐磨性能的影响。结果表明，不同NCO含量在不同摩擦工况下对聚脲耐磨性能的影响不同，干摩擦工况下NCO含量越高，耐磨性能越佳，湿摩擦工况下则是NCO质量分数为15％耐磨性最佳，异氰酸酯指数对聚脲耐磨性能的影响较小，使用聚四氢呋喃二元醇、TDI预聚物和耐磨助剂，可提高不同摩擦工况下聚脲的耐磨性能。
由不同二元醇與二異氰痠酯閤成不同NCO含量的半預聚體（ A組分）與耑氨基聚醚、胺擴鏈劑等原料組成的R組分經噴塗設備噴塗成型聚脲彈性體。討論瞭在不同摩抆工況下NCO含量、異氰痠酯指數、預聚物類型、耐磨助劑等對聚脲彈性體耐磨性能的影響。結果錶明，不同NCO含量在不同摩抆工況下對聚脲耐磨性能的影響不同，榦摩抆工況下NCO含量越高，耐磨性能越佳，濕摩抆工況下則是NCO質量分數為15％耐磨性最佳，異氰痠酯指數對聚脲耐磨性能的影響較小，使用聚四氫呋喃二元醇、TDI預聚物和耐磨助劑，可提高不同摩抆工況下聚脲的耐磨性能。
유불동이원순여이이청산지합성불동NCO함량적반예취체（ A조분）여단안기취미、알확련제등원료조성적R조분경분도설비분도성형취뇨탄성체。토론료재불동마찰공황하NCO함량、이청산지지수、예취물류형、내마조제등대취뇨탄성체내마성능적영향。결과표명，불동NCO함량재불동마찰공황하대취뇨내마성능적영향불동，간마찰공황하NCO함량월고，내마성능월가，습마찰공황하칙시NCO질량분수위15％내마성최가，이청산지지수대취뇨내마성능적영향교소，사용취사경부남이원순、TDI예취물화내마조제，가제고불동마찰공황하취뇨적내마성능。
The spraying polyurea elastomer system was synthetized by A component and R component. The A component was a kind of quasi?prepolymer with different NCO content, synthesized by polyether diol and isocya?nate. The R component was composed of amino terminated polyether, amine extender and other additives. The in?fluence on abrasion performance under different wear conditions was discussed, such as different NCO content, iso?cyanate index, type of prepolymer and different wearable additives. The result was that different NCO content had different wear influence under different wear conditions. With the NCO content of the prepolymer increase, the bet?ter abrasion resistance the polyurea had under dry wear condition. The abrasion performance was the best when NCO content was 15% under wet wear condition. The isocyanate index had a few effects on the abrasion perform?ance. The application of polytetrahydrofuran diol, TDI perpolymer and wearable additives could improve the abra?sion resistance of polyurea under different wear conditions.
