在超声辅助、氨水催化条件下,以十六烷基三甲氧基硅烷为正硅酸乙酯的共前驱体,采用溶胶-凝胶法制备了疏水纳米二氧化硅.采用纳米粒度仪、FTIR、TG-DTA等分析方法表征了疏水纳米二氧化硅,测定表明该粒子直径集中在30～50nm,疏水性保持温度为244℃.在商用石材防护涂料Coesol中添加疏水纳米二氧化硅,随着纳米粒子质量分数的增加,石材表面疏水程度增强,当纳米粒子质量分数大于等于1.1%时,石材表面呈超疏水性;而毛细吸水量和水蒸气透气性却随着纳米粒子质量分数的增加而减小.
参考文献
| [1] | Tada H;Nagayama H .Chemical vapor surface modification of porous glass with fluoroalkyl-functionalized silanes.2.Resistance to water[J].Langmuir,1995,11(01):136. |
| [2] | T.Poli;I.Toniolo;O.Chiantore .The protection of different Italian marbles with two partially flourinated acrylic copolymers[J].Applied physics, A. Materials science & processing,2004(2):347-351. |
| [3] | Allesandrinill G;Aglietto M;Castelvetro V et al.Compa-rative evaluation of fluorinated and unfluorinated acrylic copolymers as water-repellent coating materials for stone[J].Journal of Applied Polymer Science,2000,76(06):962. |
| [4] | Toniolo L;Poli T;Castelvetro V et al.Tailoring new fluorinated acrylic copolymers as protective coatings for marble[J].Journal of Cultural Heritage,2002,3(04):309. |
| [5] | Manoudis, PN;Tsakalof, A;Karapanagiotis, I;Zuburtikudis, I;Panayiotou, C .Fabrication of super-hydrophobic surfaces for enhanced stone protection[J].Surface & Coatings Technology,2009(10/11):1322-1328. |
| [6] | Miliani C;Velo-Simpson M;Scherer G W .Particle-modified consolidants:A study on the effect of particles on sol-gel properties and consolidation effectiveness[J].Journal of Cultural Heritage,2007,8(01):1. |
| [7] | Nagaraja D. Hegde;Hiroshi Hiroshima;A. Venkateswara Rao .Two step sol-gel processing of TEOS based hydrophobic silica aerogels using trimethylethoxysilane as a co-precursor[J].Journal of porous materials,2007(2):165-171. |
| [8] | Hegde ND;Rao AV .Organic modification of TEOS based silica aerogels using hexadecyltrimethoxysilane as a hydrophobic reagent[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(3):1566-1572. |
| [9] | Tsakalof A;Manoudis P;Karapanagiotis I et al.Assessment of synthetic polymeric coatings for the protection and preservation of stone monuments[J].Journal of Cultural Heritage,2007,8(01):69. |
| [10] | Daoud WA;Xin JH;Tao XM .Synthesis and characterization of hydrophobic silica nanocomposites[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(15):5368-5371. |
| [11] | Peruzzi R;Poli T;Toniolo L .The experimental test for the evaluation of protective treatments:A critical survey of the "capillary absorption index"[J].Journal of Cultural Heritage,2003,4(03):251. |
| [12] | Manoudis PN;Karapanagiotis I;Tsakalof A;Zuburtikudis I;Panayiotou C .Superhydrophobic composite films produced on various substrates[J].Langmuir: The ACS Journal of Surfaces and Colloids,2008(19):11225-11232. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%