首页|聚硅氧烷/纳米二氧化钛超疏水光催化复合涂层的制备和性能

聚硅氧烷/纳米二氧化钛超疏水光催化复合涂层的制备和性能

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采用两种不同的长链硅烷三甲氧基十六烷基硅烷(HDTMS)和三乙氧基十三氟辛基硅烷(PFTDS)对纳米二氧化钛(TiO2)进行接枝改性,分别得到改性纳米粒子HDTMS-TiO2 和PFTDS-TiO2.两种改性纳米粒子分别与聚硅氧烷预聚体原位聚合,通过两步喷涂法制备了复合涂层.改性纳米粒子的分散性得以提升,在基板上形成均匀分布的粗糙结构;改性纳米粒子仅需 20%(质量分数)的添加量就可使复合涂层呈现出超疏水性,并使涂层具有优异的自清洁性能、耐腐蚀性能和紫外光催化性能.本研究为设计多功能复合涂层提供了新的策略,在建筑、汽车、船舶等领域具有广阔的应用前景.
Preparation and Properties of Polysiloxane/Nano Titanium Dioxide Composite Coatings with Superwettability and Photocatalytic Activity
Two different long-chain silanes,hexadecyltrimethoxysilane(HDTMS)and tridecylfluoroocty-ltriethoxysilane(PFTDS),were used to modify nano titanium dioxide(TiO2),and the modified TiO2 nanoparticles were in-situ polymerized with polysiloxane prepolymers to prepare composite coatings through a two-step spraying method.The dispersion of modified nanoparticles was significantly improved,and the corresponding composite coatings formed a uniformly distributed rough structure on the substrate.Only a 20%(mass fraction)loading of the modified TiO2 could make the composite coating exhibit superhydrophobicity,exhibiting excellent self-cleaning performance,corrosion resistance,and UV photocatalytic performance.The material had broad applications in fields such as construction,automobiles,and ships.

superhydrophobic composite coatingnano titanium dioxide modificationphotocatalysisrough structurespraying

王政华、张玲、李春忠

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上海多级结构纳米材料工程技术研究中心,华东理工大学化工学院,上海 200237

上海汉特工程塑料有限公司,上海 201108

超疏水复合涂层 改性纳米TiO2 光催化 粗糙结构 喷涂法

2024

华东理工大学学报(自然科学版)
华东理工大学

华东理工大学学报(自然科学版)

CHSSCD北大核心
影响因子:0.289
ISSN:1006-3080
年,卷(期):2024.50(6)