Tailoring cotton fabric with wettability gradient and anisotropic penetration of liquid by spray coating

Abstract

Comfort has been one of the most important features of clothing, particularly for sportswear, which requires an effective transport of heat and moisture from the inner to the outer side of clothing. We herein report the use of a simple technique of spray coating and commercially available water repellents for a one-sided hydrophobic and self-initiated one-way water transport cotton fabric. The highlight of this work is the simplicity of the process and choice of chemicals that can be adopted easily by any textile finishing industry. On this fabric, water was able to diffuse and penetrate the fabric structure in one direction from the hydrophobic to the hydrophilic side but was unable to go the opposite direction. The directional transport improved with smaller droplets and lower add-on achievable by higher air pressure and longer distance of spray coating. From moisture management tests, the best result was obtained with the spray coating of Phobol NB-NH at an air pressure of 3.0?kgf/cm² and a distance of 120?cm. Phobol NB-NH gave better result of transport and overall comfort properties than Phobotex RSY.     

深圳会议展览中心钢结构工程涂装工艺

结合工程实例，介绍了钢结构工程涂装工艺，从涂装工艺流程、涂装施工工艺等方面进行了论述，指出加强工艺的操作管理，以确保涂装质量。     

渗透结晶型防水涂料及其应用

介绍渗透结晶型防水涂料的性质、特征,以及在地下室工程中的应用     

单组分聚氨酯防水涂料的研制

介绍了单组分湿固化型聚氨酯防水涂料的反应机理；报道了研制成果：分析了各组分和添加剂以及工艺条件对产品性能的影响：并得出结论：选择合适比例的混合聚醚多元醇与二甲苯基二异氰酸酯，精选各种填料和助剂，在适宜的反应条件下，可以制备出符合国家标准的单组分湿固化型聚氨酯防水涂料。     

防水层着色保护涂料

介绍一种对防水材料起着色和保护作用的涂料，以及其配方、生产工艺和技术性能。     

浅谈钢筋混凝土保护层厚度的控制措施

阐述了确保钢筋混凝土保护层厚度及施工精度的重要性，明确了保护层厚度与构件承载力的关系，分析了保护层存在的问题，并提出了保证保护层厚度的措施，以提高混凝土的结构工程质量。     

外墙涂料老化试验方法及影响因素

分析了外墙涂料老化的影响因素,探讨适合外墙涂料的自然气候暴露的试验方法,分析了人工气候老化存在的问题。     

上海中心大厦塔冠外露钢结构防腐涂装体系的研究与实践

上海中心大厦塔冠是国内房屋建筑史上第一次达到600 m以上高度的塔顶建筑,由于其结构复杂、关联设备众多、环境条件严酷、施工难度大,常规的钢结构防腐经验难以适用。通过对塔冠自然条件和施工条件的深入分析,陈述了原方案的否定、调整和再否定,并在大量工程调研的基础上,提出了新的长效防腐体系。通过试验检验,结合严格的工艺质量控制,使这一新的组合配套防腐体系在大厦塔冠钢结构防腐实践中得到落实应用。     

浅谈地下车库种植土顶板防水技术

地下车库种植屋面容易产生渗漏,为避免漏水点出现后影响建筑使用功能,分析造成种植屋面渗漏的成因,并通过工程实例,探讨新型防水材料PBC-328非固化橡胶沥青防水涂料的施工工艺流程及操作要点。     

Expression of the transportation of corrosive media into epoxy coating using nano-indentation

Nano-hardness (H_nano) and nano-elastic modulus (E_nano) of corroded coating surface layer were investigated using nano-indentation after epoxy coated specimens were immersed in 5% NaCl solution. The penetration depths (d) of corrosive media into epoxy coating were calculated fitting the curves of (H/E)_nano vs. indentation depth (h). EIS spectra of epoxy coated specimens immersed in 5% NaCl solution for different time were measured. Finally the relationship of capacitance (C_f,T) of corroded epoxy coating with the penetration depth of corrosive media was studied. The experimental results showed that the transportation process of corrosive media into epoxy coating was studied through the profiles of (H/E)_nano with indentation depth. The penetration depth of corrosive media into the epoxy coating increases rapidly with immersed time firstly, and then increases slowly. The capacitance of corroded epoxy coating has a linear function relationship with the penetration depth of corrosive media into epoxy coating. Nano-indentation can be used to study the transportation process of corrosive media into organic coating.