Abstract: ［Objective］ To address the poor compatibility between vacuum-deposited coatings and polycarbonate（PC）substrates arising from the low surface energy of PC，a silicone-acrylic hybridresin primer for PC vacuum coating was designed and synthesized via molecular structure engineering.［Methods］ The first step involved synthesizing an alcohol-soluble acrylic prepolymer（IPAA） via solution polymerization using MMA，MAA，HPA，KH-570，ABVN，and IPA as primary raw materials. In the second step，an alcohol-soluble organosilicon-acrylic hybrid resin was synthesized via the sol-gel method using MTES，IPAA，and self-made adhesion promoter（FC）as primary raw materials. Theinfluence mechanism of formulation parameters on the comprehensive properties of the coating wassystematically investigated.［Results］ Optimization results indicated that the alcohol-soluble organosilicon-acrylic hybrid resin was successfully synthesized through a two-step process of“radical solution polymerization-sol-gel. ”When FC content was 4wt%，silica sol content was 5wt%，and the MTES/IPAA mass ratio（M/I value） was 1.2，the coating exhibited excellent adhesion，moisture resistance，heat resistance，optical transparency，and coating compatibility.［Conclusion］This primer exhibited excellent adhesion on PC substrates，along with outstanding damp heat resistance and optical properties. The deposited ITO film demonstrated favorable optoelectronic performance，meeting the stringent performance requirements for vacuum-coated PC products.

Key words: PC coating；solution polymerization；sol-gel；moisture and heat resistance；adhesion 

摘要： 【目的】针对聚碳酸酯（PC）基材表面能低、与真空镀膜层匹配性差的问题，通过分子结构设计合成了 PC真空镀膜用有机硅-丙烯酸杂化树脂底涂。【方法】第一步以甲基丙烯酸甲酯（MMA）、甲基丙烯酸（MAA）、丙烯酸羟丙酯（HPA）、γ-甲基丙烯酰氧基丙基三甲氧基硅烷（KH-570）、偶氮二异庚腈（ABVN）和异丙醇（IPA）等为主要原料，采用溶液聚合法合成醇溶性丙烯酸预聚物（IPAA）；第二步以甲基三乙氧基硅烷（MTES）、IPAA、自制附着力促进剂（FC）等为主要原料，采用溶胶-凝胶法制备醇溶性有机硅-丙烯酸杂化树脂，系统考察了配方参数对涂层综合性能的影响机制。【结果】通过“自由基溶液聚合-溶胶凝胶”两步法成功制备了醇溶性有机硅-丙烯酸杂化树脂；当 FC用量为 4%（质量分数，下同）、硅溶胶用量为 5%、MTES/IPAA质量比（M/I值）为 1. 2时，涂层兼具优异的附着力、耐湿热性、耐热性、光学透明性及镀膜匹配性。【结论】该杂化树脂底涂与 PC基材附着力佳，具有优异的耐湿热性和光学性能。镀膜后氧化铟锡（ITO）膜表现出良好的光电性能，满足 PC真空镀膜制品的严苛性能要求。

关键词: PC镀膜, 溶液聚合, 溶胶-凝胶, 耐湿热, 附着力

CLC Number: 

• TQ637