摘要： 【目的】为解决传统易清洁涂层中低表面能组分与基体相容性差、涂层透光率低以及耐磨耐久性不足等问题。【方法】以单侧双羟基封端聚二甲基硅氧烷（ PDMS-OH₂）、六亚甲基二异氰酸酯（ HDI）和丙烯酸羟乙酯（ HEA）为原料，合成了含光反应性丙烯酸酯基团的梳状有机硅树脂（PHEA）。将 PHEA引入聚己内酯型聚氨酯丙烯酸酯（ LPUA）基体中，经紫外光固化制备不同 PHEA质量分数的易清洁涂层，并系统研究 PHEA质量分数对涂层润湿性、透光率、表面形貌、耐沾污防涂鸦性能及耐磨稳定性的影响。【结果】当 PHEA质量分数为 2. 0%时，涂层综合性能最优：水和十六烷接触角显著提高，表面能降至 23. 38 mJ/m²，500 nm处透光率为 78. 0%，表面粗糙度仅为 0. 345 nm。固化过程中， PHEA分子中的 PDMS链段可自发向表面迁移，形成均匀致密的低表面能界面，使涂层对油性笔迹、咖啡、牛奶及酸碱溶液均表现出良好的拒液与易清洁性能。经 3 000个次棉布磨损周期后，涂层水接触角仅下降 8. 14%，仍保持稳定的耐沾污效果和耐久性。梳状结构一方面通过主链氢键作用改善树脂相容性，另一方面依靠支链 PDMS富集构筑稳定低表面能界面，从而有效平衡涂层的透光性、易清洁性与耐磨性。【结论】 2. 0%PHEA改性涂层在保持较高透光率的同时，兼具优异的防涂鸦、易清洁及耐磨性能。

关键词: 紫外光固化, 梳状结构, 低表面能, 易清洁涂层, 耐磨性, 有机硅树脂

Abstract: ［Objective］ This work aims to develop a UV-curable easy-to-clean coating withbalanced interfacial compatibility，optical transparency and abrasion durability through the moleculardesign of a comb-shaped organosilicone resin.［Methods］ A comb-shaped organosilicone resin（PHEA） bearing photo-reactive acrylate groups was synthesized from single-side dihydroxy-terminated polydimethylsiloxane（PDMS-OH₂）， hexamethylene diisocyanate（HDI）， and hydroxyethyl acrylate（HEA）. PHEA was incorporated into a polycaprolactone-based polyurethane acrylate（LPUA）matrix，and a series of UV-curable easy-to-clean coatings with different PHEA contents wereprepared. The effects of PHEA content on wettability，optical transmittance，surface morphology，anti-stain and anti-graffiti performance，and abrasion stability were systematically investigated.［Results］The coating containing 2. 0wt%PHEA exhibited the best overall performance，with increased water and hexadecane contact angles，a decreased surface energy of 23. 38 mJ/m²，a transmittance of 78. 0% at 500 nm，and a surface roughness of 0. 345 nm. During UV curing，PDMS segments in PHEA spontaneously migrated toward the air/coating interface，forming a uniform low-surface-energy layer. As a result，the coating showed excellent liquid repellency and easy-cleaning behavior against oilyhandwriting，coffee，milk，and acidic/alkaline solutions. After 3 000 cotton cloth abrasion cycles，the water contact angle decreased by only 8. 14%，indicating good anti-stain durability. The comb-shapedarchitecture improved resin compatibility through hydrogen bonding along the main chain，and the enriched PDMS side chains facilitated the formation of a stable low-surface-energy interface. Suchsynergistic effects balanced optical transparency，easy-cleaning performance and abrasion resistance.［Conclusion］The coating containing 2. 0wt% PHEA maintained relatively high optical transmittancewhile showing outstanding anti-graffiti，easy-cleaning and wear resistant performances. 

Key words: UV curing, comb-like structure, low surface energy, easy-to-clean coating, wear resistance, organicsilicone resin

中图分类号: 

• TQ637