(1) Waterborne Coating

In terms of water-based paint, car original paint is far ahead of car repair paint. As early as the mid-1960s, automotive primers in Europe and North America first completed the water-based process, and electric ice primers were put into use; In the mid to late 1980s, the water-based primer was also completed; In the early 1990s, water-based gloss varnish also began to enter shopping malls. During this period, a representative company should be Herbests. Now the company has supplied a series of water-based coatings from the bottom to the surface to the car assembly plant. The water-based process of car repair paint is much slower, and so far only a few companies have products to supply to shopping malls. A successful example of water-based repair paint for sedans now is the water-based application of two component polyurethane coatings. ICI company recently launched Aquahase's water-based base paint, which uses advanced micro adhesive composition skills to largely overcome the inherent defects of previous water-based coatings, and then gives it great potential for market competition.

Aquabase base base paint can be used in conjunction with solvent based two component center coatings or water-based center coatings. As for the glossy topcoat, IC1 company advocates the best choice of solvent based high solid component polyurethane or acrylic polyurethane coatings. Aquabase successfully overcame the inconvenience caused by the strict environmental humidity requirements of the original water-based coatings for construction applications, thus paving the way for entering the car repair paint market.

（2）涂料的高固体化

20世纪80年代，跟着各国对环保的日益注重，高固体成分的聚氨酯高温烤漆、丙烯酸聚氨酯漆和清漆遍及被轿车厂选用。高固体成分涂料的出现，能够大大削减有机溶剂的蒸发量。可是，由于种种原因，高固体成分漆料在我国轿车修补行业中推广缓慢，这可能与我国至今停止尚无严格的轿车涂装车间的VOC约束法则有关。跟着人们对保护地球环境，削减大气污染越来越注重，相信我国政府也会制订出切合实际的环保法规。

（3）非异氰酸酯化

双组分聚氨酯系涂料具有许多杰出的功能，多年来一直遭到涂装业的遍及欢迎，可是这儿所用的异氰酸酯衍生物具有较大的毒性，必然严重危害操作人员的身体健康。据了解，英联邦各国已经明令禁止在涂料中运用含异氰酸酯基的化合物作交联剂，欧、美及日本等国也预备拟定禁止运用该物质的有关条例。几乎能够肯定地说，进入21世纪以后，将逐渐停止运用含异氰酸酯基的衍生物作为轿车修补涂料的交联剂。最近荷兰阿克苏公司开发了一种商品牌号为AUTOVA的非异氰酸酯系双组分轿车修补漆。该公司介绍，AUTONOVA具有双组分聚氨酯系涂料几乎所有的特色，且交联剂不选用含异氰酸酯基团的化合物，干燥速度特别快，可低温干燥。

有机硅改性丙烯酸涂料中的丙烯酸树脂，与涂料常用的丙烯酸树脂基本相同，但它利用硅烷上的烷氧基在酸、碱及有机金属化合物催化剂的存在下水解、缩合，然后交联成膜，是一类非异氰酸酯衍生物作交联剂的涂料。有机硅改性丙烯酸涂料具有超耐候性、耐沸水性、耐性、耐极性介质性、抗污染性以及漆膜平坦、光滑、饱满、机械功能杰出等特色。将其与传统两烯酸聚氨酯涂料的功能进行比较，能够得出绝无差劲之处的结论。唯一的缺陷是价格偏高，现在大面积推广尚存在必定的困难。可是相信跟着有机硅工业的进一步开展，技能的进一步完善，成本的进一步降低，有机硅改性丙烯酸树脂系涂料终将替代传统的聚脂聚氨酯、丙烯酸聚氨酯系涂料，成为21世纪新一代轿车修补漆的主要产品。

Article source: Qingyuan Automotive Repair Paint http://www.jinliangxincai.com/