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摘要
以纳米SiO2溶胶、甲基三乙氧基硅烷(MTES)和γ-(2,3-环氧丙氧)丙基三甲氧基硅烷(KH-560)为原料,采用溶胶-凝胶法制备了一系列环氧烃基硅树脂;添加1-苄基-2-甲基咪唑(BMI)、乙酰丙酮铝、混合溶剂等,配成用于改善聚甲基丙烯酸甲酯(PMMA)表面抗划伤性的有机硅涂料。研究了SiO2溶胶与KH-560的配比、乙酰丙酮铝的用量等参数对涂层耐磨性、硬度、附着力及光学透光性等性能的影响。结果表明,制备的硅树脂涂层可以有效提高PMMA表面的硬度和耐磨性,当涂层原料SiO2和KH-560的质量比为2∶1、乙酰丙酮铝用量为涂层液质量的0.4%时,涂层的铅笔硬度和附着力分别为4H和1级,耐磨性和透光性均较未涂覆的PMMA基材有所提高。
Abstract
A series of epoxy hydrocarbon-based silicone resins were synthesized through sol-gel method with nano-SiO2 sol,methyltriethoxysilane (MTES) and γ-(2,3-epoxypropoxy)propyltrimethoxysilane (KH-560) as the raw materials.With the addition of 1-benzyl-2-methylimidazole (BMI),aluminium acetylacetonate and the mixed solvent,the silicone coatings were obtained for improving the scratch resistance of poly(methyl methacrylate) (PMMA) surfaces.The effects of the dosage ratio of SiO2 to KH-560 and the amounts of aluminium acetylacetonate on the wear-resistance property,hardness,adhesion,and optical transmittance of the coatings were studied.The results showed that the prepared silicone coatings effectively improved the hardness and wear-resistance property of the PMMA surfaces.When the mass ratio of the SiO2 to KH-560 was 2∶1 and the mass ratio of aluminium acetylacetonate was 0.4% of the coating solution mass,the pencil hardness and adhesion of the coating were level 4H and level 1,respectively.The wear-resistance and the optical transmittance were improved compared with that of the uncoated PMMA substrate.
关键词
聚甲基丙烯酸甲酯
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耐磨涂层
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溶胶-凝胶法
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硅树脂
Key words
poly (methyl methacrylate)
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wear-resistant coating
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sol-gel method
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silicone resin
有机玻璃表面硅树脂耐磨涂层的制备与表征[J].
化工新型材料, 2024, 52(3): 172-176 DOI:10.19817/j.cnki.issn1006-3536.2024.03.021
[1] Ali U,Karim K J Bt A,Buang N A.A review of the properties and applications of poly (methyl methacrylate)(PMMA)[J].Polymer Reviews,2015,55(4):678-705.
[2] Zafar M S.Prosthodontic applications of polymethyl methacrylate (PMMA):an update[J].Polymers,2020,12(10):2299.
[3] 刘大光,朱子华.有机玻璃耐磨涂层研究进展[J].化工新型材料,2005,33(11):14-16,20.
[4] Martínez Urreaga J,Matías M C,Lorenzo V,etal.Abrasion resistance in the tumble test of sol-gel hybrid coatings for ophthalmic plastic lenses[J].Materials Letters,2000,45(6):293-297.
[5] 何涛,高长有.双组分有机硅涂料及其对有机玻璃表面的增强作用[J].有机硅材料,2006,20(6):288-291.
[6] 张超,林金平,陈建岁,等.有机玻璃表面增强增透的研究[J].厦门大学学报(自然科学版),2008,47(3):379-382.
[7] 顾剑东,魏超,王志强,等.溶胶-凝胶法制备有机玻璃镀膜板表面高透光率耐磨层[J].现代涂料与涂装,2021,24(12):11-13.
[8] Lee M S,Jo N J.Coating of methyltriethoxysilane—modified colloidal silica on polymer substrates for abrasion resistance[J].Journal of Sol-Gel Science and Technology,2002,24(2):175-180.
[9] Tanglumlert W,Prasassarakich P,Supaphol P,etal.Hard-coating materials for poly(methyl methacrylate) from glycidoxypropyltrimethoxysilane-modified silatrane via a sol-gel process[J].Surface and Coatings Technology,2006,200(8):2784-2790.
[10] 黄文润.硅烷偶联剂及硅树脂[M].成都:四川科学技术出版社,2010.
[11] 任鹏飞.硅氧烷类聚合物耐磨透明涂层的制备及其性能研究[D].杭州:浙江大学,2015.
[12] Ou D L,Seddon A B.Near- and mid-infrared spectroscopy of sol-gel derived ormosils:vinyl and phenyl silicates[J].Journal of Non-Crystalline Solids,1997,210(2):187-203.
[13] Nassar E J,Neri C R,Calefi P S,etal.Functionalized silica synthesized by sol-gel process[J].Journal of Non-Crystalline Solids,1999,247(1):124-128.
[14] 张超.光学塑料表面耐擦伤增透涂层的制备及性能研究[D].厦门:厦门大学,2008.
[15] 胡加兴,赵威,曲晶.TEOS/MTES有机无机复合薄膜的制备及其性能研究[J].科技展望,2016,26(27):41-42.
基金资助
江汉大学校级科研项目(2021yb023)
