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(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）涂料的高固體化

20世紀80年代，跟著各國對環保的日益注重，高固體成分的聚氨酯高溫烤漆、丙烯酸聚氨酯漆和清漆遍及被轎車廠選用。高固體成分涂料的出現，能夠大大削減有機溶劑的蒸發量。可是，由于種種原因，高固體成分漆料在我國轎車修補行業中推廣緩慢，這可能與我國至今停止尚無嚴格的轎車涂裝車間的VOC約束法則有關。跟著人們對保護地球環境，削減大氣污染越來越注重，相信我國政府也會制訂出切合實際的環保法規。

（3）非異氰酸酯化

雙組分聚氨酯系涂料具有許多杰出的功能，多年來一直遭到涂裝業的遍及歡迎，可是這兒所用的異氰酸酯衍生物具有較大的毒性，必然嚴重危害操作人員的身體健康。據了解，英聯邦各國已經明令禁止在涂料中運用含異氰酸酯基的化合物作交聯劑，歐、美及日本等國也預備擬定禁止運用該物質的有關條例。幾乎能夠肯定地說，進入21世紀以后，將逐漸停止運用含異氰酸酯基的衍生物作為轎車修補涂料的交聯劑。最近荷蘭阿克蘇公司開發了一種商品牌號為AUTOVA的非異氰酸酯系雙組分轎車修補漆。該公司介紹，AUTONOVA具有雙組分聚氨酯系涂料幾乎所有的特色，且交聯劑不選用含異氰酸酯基團的化合物，干燥速度特別快，可低溫干燥。

有機硅改性丙烯酸涂料中的丙烯酸樹脂，與涂料常用的丙烯酸樹脂基本相同，但它利用硅烷上的烷氧基在酸、堿及有機金屬化合物催化劑的存在下水解、縮合，然后交聯成膜，是一類非異氰酸酯衍生物作交聯劑的涂料。有機硅改性丙烯酸涂料具有超耐候性、耐沸水性、耐性、耐極性介質性、抗污染性以及漆膜平坦、光滑、飽滿、機械功能杰出等特色。將其與傳統兩烯酸聚氨酯涂料的功能進行比較，能夠得出絕無差勁之處的結論。唯一的缺陷是價格偏高，現在大面積推廣尚存在必定的困難。可是相信跟著有機硅工業的進一步開展，技能的進一步完善，成本的進一步降低，有機硅改性丙烯酸樹脂系涂料終將替代傳統的聚脂聚氨酯、丙烯酸聚氨酯系涂料，成為21世紀新一代轎車修補漆的主要產品。

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