环氧/聚丙烯酸酯乳液的制备及在膨胀型防火涂料的应用

本文以热固性的环氧树脂改性热塑性的丙烯酸酯乳液制备了水性超薄膨胀型钢结构防火涂料专用乳液作为涂层的成膜物质。采用红外光谱（FT-IR）、差示扫描量热分析（DSC）、热重分析（TGA）、扫描电镜（SEM）等方法研究乳液性能及乳液对防火涂料的影响,结果表明：通过环氧改性,提高了乳胶膜的分解温度和玻璃转化温度,使其与膨胀体系更匹配,以环氧改性过的丙烯酸酯乳液作为防火涂料的成膜物质,使得涂层在受热膨胀后能形成致密的、均匀的蜂窝状泡孔,获得较好的耐火性能。     

新型水性油墨清洗剂工艺研究

采用水和航空煤油为主要原料,研究了一种新型水性油墨清洗剂的制备工艺。经实验优化结果表明:复合溶剂的配比、复合乳化剂的选择、乳化工艺、极性溶剂和碱性助剂均影响清洗剂的效果和稳定性。经配方和工艺优化后制得的清洗剂安全性能高、清洗效果好、清洗速度快、稳定性能强。     

Digital printing of acrylic fabric with cationic dyes using conventional inkjet printer

A special printing ink formulation based on cationic dyes is developed for digital printing of acrylic fabrics using a conventional inkjet printer. In order to investigate the contribution of color gamut boundary of printer colorants to printing efficiency, customized color targets containing 3164 color patches in 25 different hues were generated. The printed color patches were then fixed through steaming for 30 minutes followed by washing with hot soap and water and finally drying. To show the influence of dye fixation on colorimetric changes as well as color gamut boundary of samples, the L*a*b* values of color patches before and after fixation process were compared. Results demonstrate that color saturation of samples is enhanced dramatically after the dye fixation process. In fact, 3D color gamut of color patches has been drastically expanded as a direct consequence of adsorption to absorption transition. Additionally, dye fixation changes the structure of printed image from halftone superimposed dots to contone superimposed dyes. Strictly speaking, during fixation process, colors inside the halftone dots diffuse through the interfacial area to make the individual printed dots integrated. This is in analogy to the chromogenic photography films and dye‐sublimation thermal transfer processes by which contone images are produced. Moreover, dye fixation improves the washing fastness of digitally printed acrylic fabrics to the level comparable with the traditional screen printing method. © 2016 Wiley Periodicals, Inc. Col Res Appl, 42, 244–249, 2017     

我国鞋用胶粘剂的市场与展望

目前,我国年产鞋量为60亿双,随着经济的增长,在加入WTO后,我国年产鞋量可稳定在70亿~80亿双。溶剂胶制造简单、使用方便、粘合力强,是广泛使用的大底胶,但环境污染严重,即将面临着被环保型胶取代的局面;具有环保性的热熔胶可用于绷帮、涂包头、鞋帮部件抿边、粘衬里、包鞋跟和面料复合,但用它来粘大底,还满足不了穿着的要求,须从增强分子间作用力和快速渗透功能两方面改进;水基胶尽管还存在粘合强度不高、水分蒸发慢等不足,但由于是目前污染最少的胶种而倍受关注;无溶剂胶省去了聚合、溶解、挥发干燥等诸多程序,同样也具有广阔的发展前景。     

松香改性壬基酚、甲醛树脂的合成反应

通过加入聚合松香及两种催化剂诉配合使用,有效地解决了高庚烷妨度树脂会导致低溶液粘度的难题,同时,提高了酯化反应程度和收率。并对树脂的酸值、粘度、软化点和正更烷容忍度等性能进行了分析测试,最终获得了低酸值、高软化点、高粘度、高更容的浅色松香改性壬基酚醛树脂产品。     

水性抗菌罩光油的制备及抗菌性能

以水性丙烯酸酯乳液为主要连结料,添加纳米二氧化钛抗菌剂复配成水性罩光油。参考日本JIS Z2801:2000标准,研究了纳米二氧化钛种类和用量对水性罩光油抗菌效果的影响。结果表明,TIO-WPR010(锐钛型纳米二氧化钛水性溶液)的抗菌效果优于TIO-NP100(氮掺杂纳米二氧化钛粉体)。当TIO-WPR010质量分数为0.7%~0.9%时,所制备的水性抗菌罩光油经过48 h的抗菌试验,对金黄色葡萄球菌和大肠杆菌的抗菌率分别为91.84%和94.51%,能够满足白卡纸的抗菌要求。     

耐高温有机硅油墨的制备与性能表征

以自制硅树脂为基料,添加云母粉、滑石粉、低熔点硼玻璃粉、钛白粉、纳米SiO2及消泡剂、流平剂等,制成了耐高温油墨.研究了云母粉、滑石粉、低熔点硼玻璃粉对耐高温油墨性能的影响.结果表明,当云母粉、滑石粉、低熔点硼玻璃粉的用量分别占硅树脂固体质量的15%～20%、10%～20%、35%～45%时,耐高温油墨涂后能耐700℃...     

印制线路板废水处理的研究进展

印制线路板废水污染物种类多、成分复杂、处理难度大、处理成本高.急需寻找环保、高效、节能的处理技术.在介绍目前常用的处理方法的基础上,重点总结处理该废水较为前沿的研究成果,为工程中处理该废水提供借鉴.     

Rheological behavior of multi-sized SiC inks containing polyelectrolyte complexes specifically for direct ink writing

In order to simultaneously improve both the solid loading and rheological behavior of ceramic ink during direct ink writing (DIW) process, the polyelectrolyte complexes have been used as rheological modifiers. Based on the Funk-Dinger function, the maximum solid loading of multi-sized SiC ink reached 63 vol%. The viscoelasticity of SiC inks with different [COOH]:[NH_x] molar ratios was investigated and the mechanism of polyionic chains on rheology was analyzed. When the [COOH]:[NH_x] molar ratio was 1:0.1, the SiC ink exhibited excellent thixotropic behavior and formability. The effect of particle size on rheological behavior of SiC ink was investigated to clarify the correlation between polyelectrolyte complexes and multi-sized SiC.