宋剑刚，王发鹏，顾 笛

（1.浙江永裕竹业股份有限公司，浙江 安吉 313301；2.浙江农林大学 工程学院，浙江 临安311300）

竹材表面仿生构筑类月季花超疏水结构的研究

宋剑刚1，王发鹏2，顾 笛2

（1.浙江永裕竹业股份有限公司，浙江 安吉 313301；2.浙江农林大学 工程学院，浙江 临安311300）

为克服竹材因吸湿而产生开裂、变形等缺陷，利用软印刷技术，以新鲜月季花Rosa chinensis为模板，聚二甲基硅氧烷为印章，在竹材表面仿生构筑类月季花瓣表面的超疏水微纳结构，经转印复型使竹材具有类月季花瓣高黏滞力的超疏水特性。利用扫描电子显微镜观测并对接触角进行测试。结果表明：制备的类月季花瓣竹材样品具有与月季花瓣类似的乳突状微米结构和凹槽状纳米结构的粗糙表面，它与水滴的接触角高达到153.5°，接近月季花瓣表面的接触角157.5°，显示出超疏水特性。同时，水滴可以牢固附着在竹块表面，并将其翻转90.0°和180.0°，水滴均不会滚落，表现了良好的黏附性。此外，试样提高了对涂料附着的能力。图4参28

木材科学与技术；竹材表面；超疏水性；高黏附性；月季花瓣；软印刷技术

Abstract:To overcome defects such as cracks and deformation caused by moisture absorption of bamboo,a super-hydrophobic micro-nano structure of Chinese rose was built on bamboo surfaces through soft lithography using fresh Chinese rose petals as the template and polydimethylsiloxane for a seal.Scanning electron microscopy was used for the analysis.Results of the scanning electron microscopy and water contact angle（WCA） showed that the prepared Chinese-rose-like bamboo samples had a papillary micro structure and a groove shaped nanometer structure with rough surfaces like Chinese rose petals.The WCA of the replicated bamboo surface was 153.5°which was close to that of Chinese rose petals （157.5°）,thereby expressing a super-hydrophobic property.At the same time,water droplets could be firmly attached to the surface of the bamboo.Even if the bamboo surfaces were turned 90°and 180°,water droplets did not roll off the bamboo,which showed favorable adhesion.Thus,the bamboo was super-hydrophobic with high adhesion similar to Chinese rose petals;in addition,the super-hydrophobic sample improved in adhesion with coatings. ［Ch,4 fig.28 ref.］

Key words:wood science and technology;bamboo surface;super-hydrophobic property;high adhesion;Chinese rose petal;soft lithography

竹材具有与木材相似的质感，且具有比木材生长快、韧性好等优点。近年来竹材在传统木材应用领域内被广泛利用［1］。作为一种天然生物材料，其自身的结构决定了竹材具有较强的湿胀干缩性，这影响了竹材的尺寸稳定性，也使得竹材制品在使用时易产生开裂、变形等缺陷［2］。浸润性与材料的疏水性有关，是固体表面一个重要的特征。……