摘要： 为研制具有良好耐磨性和耐紫外老化性能的飞机座舱透明件表面用透明涂层，以聚己内酯多元醇、二环己基甲烷二异氰酸酯（H12MDI）为主要原料，模拟笼型低聚倍半硅氧烷（POSS）结构合成了一种“聚氨酯笼状多元醇”，对其进行了表征。考察了含氟单体和含丙烯酸链段改性“聚氨酯笼状多元醇”对涂层耐紫外老化性能、水接触角、附着力的影响以及改性纳米氧化铈、紫外线吸收剂用量对涂层性透光率、雾度、耐紫外老化、涂层表面状态的影响。结果表明：制备了符合预期的“聚氨酯笼状多元醇”结构链段；制备的透明涂层透光率≥90%，耐磨效果良好，且耐磨性随着涂层厚度的增加而增加；采用十三氟辛醇改性“聚氨酯笼状多元醇”链段，涂层耐紫外老化性能和疏水性提升；采用甲基丙烯酸异氰基乙酯改性“聚氨酯笼状多元醇”链段，制备的涂层耐紫外老化性能和附着力提升；添加 0. 4%的改性纳米氧化铈和 0. 8%的紫外线吸收剂 UV-1577后，涂层的耐紫外老化性能提升明显，且对涂层透光率、雾度影响较小。
关键词:
透明件,
有机玻璃,
聚氨酯,
耐磨,
耐老化
Abstract: In order to develop a transparent coating for the surface of aircraft cockpittransparent parts with good wear resistance and UV aging resistance，simulating the cage like oligomeric sesquioxane（POSS）structure，a“polyurethane cage like polyol”was synthesized by using polycaprolactone polyol and dicyclohexylmethane diisocyanate（H12MDI）as the main raw materials and characterized. The effects of fluorinated monomers and acrylic acid containing segments on the UV aging resistance，water contact angle，and adhesion of the coating after modification of“polyurethane cage like polyols”were evaluated，as well as the effects of modified nano ceria and UV absorber dosage on the transmittance，haze，UV aging resistance，and surface state of the coating. The results showed that the expected "polyurethane cage like polyol" structural segments were prepared. The transparency of the prepared transparent coating was greater than or equal to 90%，with good wear resistance，and the wear resistance was developed with the increase of coating thickness. The use of thirteen fluorooctanol to modify the“polyurethane cage like polyol”chain segment enhanced the coating's UV aging resistance and hydrophobicity. The coating prepared by modifying the chain segment of“polyurethane cage polyol”with isocyanoethyl methacrylate improved its UV aging resistance and adhesion. The UV aging resistance of the coating was significantlyimproved after adding 0. 4% modified nano ceria and 0. 8% UV-1577，and the effect on the transmittance and haze of the coating was relatively small.
Key words:
transparent parts,
plexiglass,
polyurethane,
wear resistance,
aging resistance
中图分类号:
魏超, 田永丰, 李建飞, 等. 飞机透明件表面耐磨聚氨酯涂层的制备及其耐紫外老化性能的研究[J]. 涂料工业, 2024, 54(1): 30-35.
WEI C, TIAN Y F, LI J F, et al. Preparation of Wear-resistant Polyurethane Coating on the Surface of Aircraft Transparent Parts and Its UV Aging Resistance[J]. Paint & Coatings Industry, 2024, 54(1): 30-35.