通过异佛尔酮二异氰酸酯(IPDI)改件环氧丙烯酸酯(四氧邻苯二甲酸二缩水甘油丙烯酸酯),以此改性预聚物配合活性稀释剂、光引发剂制得紫外光固化涂料.考察了不同-NCO与-OH配比对产物黏度的影响.通过FT-IR对预聚物的结构进行表征,用TGA研究固化膜的热性能,拉伸实验研究固化膜的力学性能.结果表明,反应物中当-NCO与-OH的物质的昔比小于1时,-NCO与-OH比值越高则产物的黏度越大;改性后的光固化薄膜的拉伸强度能达到23 MPa以上,断裂伸长率比未改性以前提高了3倍以上,开始热分解的温度为150℃.
The epoxy acrylate (tetrahydrocannabinol phthalate glycidyl acrylate) was modified by IPDI to prepare aprepolymer, which was used to formulate a UV-curing coating together with, active diluent and photoinitiator. The influence of NCO/OH on viscosity of product was investigated. The structure of UV-cu-ring prepolymer was characterized by FT-IR. The thermal properties of cured film were studied by TGA and the mechanical properties were studied by tensile test. The results showed that the higher NCO/OH ratio led to higher viscosity of the product. Tensile strength of the UV-cured coatings film was above 23 MPa. The e-longation at break was increased by 3 times and the on-set decomposition temperature was 150℃.
参考文献
| [1] | 李桂林.环氧树脂与环氧涂料[M].北京:化学工业出版社,2003:48-53. |
| [2] | Oprea S.;Stanciu A.;Macoveanu M.;Vlad S. .Epoxy urethane acrylate[J].European Polymer Journal,2000(2):373-378. |
| [3] | 李彦涛;杨淑兰;费学梅 等.改性四氢邻苯二甲酸二缩水甘油丙烯酸酯、制备方法及应用[P].中国,200910073632.x,2009-01-12. |
| [4] | 苏政权,刘伟伦.分光光度法测聚氨酯胶粘剂中NCO含量的研究[J].聚氨酯工业,2005(03):39-42. |
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