装饰卷材用水性涂料的制备与性能研究

发布时间：2018-01-31 11:18

本文关键词： 装饰卷材预油漆纸水性涂料氨基-丙烯酸　出处：《东北林业大学》2010年硕士论文　论文类型：学位论文

【摘要】： 本文综述了人造板表面装饰用预油漆纸及水性涂料的发展概况,分析了国内外氨基-丙烯酸涂料水性化技术的研究及发展趋势。溶剂型涂料以有机溶剂作为分散介质,既污染环境,又浪费资源和能源。水性涂料以水作为分散介质,可大大降低VOC含量,又节约成本。预油漆纸作为一种纸质装饰卷材,按照其生产工艺的特点,其表面涂饰的涂料要求在短时间内快速固化,以形成连续、光滑、尤其是理化性能优良的涂膜。针对以上问题,本文从原料的选择,配方设计,涂料制作工艺及涂料的固化性能等方面进行了全面研究,以制作性能良好的预油漆纸用水性涂料。主体内容分为以下几个部分：一、设计配方。制备水性涂料之前先研究各组分对涂料性能的影响,详细分析各组分的作用机理。根据机理分别选择最适合预油漆纸用水性涂料的类型及各种原料,对水性涂料的配方进行优化设计。另外,考虑到环保的要求,选取不对环境造成危害和VOC释放尽可能少的产品。二、研究各组分对水性涂料性能的影响。首先,探讨了预油漆纸用水性涂料成膜物质的类型,结果发现：采用低醚化度氨基树脂和含适当羟基的苯丙乳液作为成膜物质,涂料能在预定的温度下快速固化,成膜效果最好。其次,研究了配方中氨基与丙烯酸质量比及烘烤温度对涂料性能的影响。最后,为了赋予涂料及固化后漆膜一些特殊的性能,使之达到功能化的要求,还要在涂料中加入一些助剂。为了兼顾各组分之间的影响,对每类助剂选取一系列加入进行对比实验,找到使漆膜性能达到最佳的组合及用量。通过以上实验分析,确定了预油漆纸用水性涂料的最佳配方。根据国家标准规定的要求和指标对涂料性能及固化后漆膜耐干热性、耐湿热性、铅笔硬度和耐液性等进行测试,结果都符合要求,尤其是有毒物质的释放远远低于国家标准要求范围。三、对预油漆纸用水性涂料的固化反应研究。在这一部分,研究了固化前后水性氨基-丙烯酸涂料的固化特征,通过对样品的FTIR谱分析,半定量地研究了固化反应前后不同基团含量的变化情况,分析了涂料发生固化反应的原理及能够快速固化的原因。DSC研究了涂料发生固化反应的温度范围,进一步验证了预油漆纸用水性氨基-丙烯酸涂料能够在本实验设定的温度范围内快速固化。综上所述,本文的研究,对人造板饰面材料及水性涂料的进一步理论开发和实际应用具有参考价值。
[Abstract]:This paper reviews the development of prepainted paper and waterborne coatings for surface decoration of wood-based panels. The research and development trend of the waterborne technology of amino-acrylic coatings at home and abroad are analyzed. The organic solvent is used as the dispersing medium in the solvent-based coatings, which pollutes the environment. Water as dispersing medium can greatly reduce the content of VOC and save the cost. As a kind of paper decorative coiled material, prepaint paper is based on the characteristics of production technology. The coating on its surface needs to be cured quickly in a short time to form a continuous, smooth coating, especially one with excellent physicochemical properties. In view of the above problems, the selection of raw materials and the formulation design are discussed in this paper. In order to make waterborne coatings for prepaint paper with good performance, the main content is divided into the following parts: First, design the formula. Before the preparation of water-based coatings, the effects of each component on the performance of the coating were studied. The function mechanism of each component was analyzed in detail. According to the mechanism, the types and raw materials of waterborne coatings for prepaint paper were selected respectively, and the formulation of waterborne coatings was optimized. In addition, the requirements of environmental protection were considered. Select products that do not cause harm to the environment and VOC releases as little as possible. Secondly, the effects of each component on the properties of waterborne coatings were studied. Firstly, the types of film forming materials of waterborne coatings for prepaint paper were discussed. The results showed that low etherifying degree amino resin and styrene-acrylic emulsion with proper hydroxyl group were used as film forming materials, the coating could be cured quickly at predetermined temperature, and the film forming effect was the best. The effect of the mass ratio of amino to acrylic acid and baking temperature on the properties of the coating was studied. Finally, in order to give the coating and the cured film some special properties, the functional requirements were achieved. In order to take into account the influence of each component, a series of additives were added to the coating to carry out a comparative experiment. Find out the best combination and dosage of the film performance. Through the above experimental analysis. The optimum formulation of waterborne coatings for prepainted paper was determined. The properties of the coatings, the resistance to dry heat, moisture and heat, the hardness of pencils and the resistance to liquid were tested according to the requirements and indexes of national standards. The results are in accordance with the requirements, especially the release of toxic substances far below the scope of national standards. In this part, the curing characteristics of waterborne amino-acrylic coatings before and after curing were studied, and the FTIR spectra of the samples were analyzed. The changes of different group contents before and after curing reaction were studied semi-quantitatively. The principle of curing reaction and the reason of rapid curing were analyzed. DSC was used to study the temperature range of curing reaction. It is further verified that waterborne amino-acrylic coatings for prepaint paper can be cured rapidly in the temperature range set in this experiment. To sum up, the research in this paper has reference value for the further theoretical development and practical application of wood-based panel finishing materials and waterborne coatings.
【学位授予单位】：东北林业大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TS62

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