Materials for Qingyuan Automotive Repair Paint
(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(jì)80年代，跟著各國(guó)對(duì)環(huán)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(xiàn)，能夠大大削減有機(jī)溶劑的蒸發(fā)量?？墒牵捎诜N種原因，高固體成分漆料在我國(guó)轎車修補(bǔ)行業(yè)中推廣緩慢，這可能與我國(guó)至今停止尚無(wú)嚴(yán)格的轎車涂裝車間的VOC約束法則有關(guān)。跟著人們對(duì)保護(hù)地球環(huán)境，削減大氣污染越來(lái)越注重，相信我國(guó)政府也會(huì)制訂出切合實(shí)際的環(huán)保法規(guī)。
（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(lái)一直遭到涂裝業(yè)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(yán)重危害操作人員的身體健康。據(jù)了解，英聯(lián)邦各國(guó)已經(jīng)明令禁止在涂料中運(yùn)用含異氰酸酯基的化合物作交聯(lián)劑，歐、美及日本等國(guó)也預(yù)備擬定禁止運(yùn)用該物質(zhì)的有關(guān)條例。幾乎能夠肯定地說(shuō)，進(jìn)入21世紀(jì)以后，將逐漸停止運(yùn)用含異氰酸酯基的衍生物作為轎車修補(bǔ)涂料的交聯(lián)劑。最近荷蘭阿克蘇公司開(kāi)發(fā)了一種商品牌號(hào)為AUTOVA的非異氰酸酯系雙組分轎車修補(bǔ)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(lián)劑不選用含異氰酸酯基團(tuán)的化合物，干燥速度特別快，可低溫干燥。
有機(jī)硅改性丙烯酸涂料中的丙烯酸樹(shù)脂，與涂料常用的丙烯酸樹(shù)脂基本相同，但它利用硅烷上的烷氧基在酸、堿及有機(jī)金屬化合物催化劑的存在下水解、縮合，然后交聯(lián)成膜，是一類非異氰酸酯衍生物作交聯(lián)劑的涂料。有機(jī)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(zhì)性、抗污染性以及漆膜平坦、光滑、飽滿、機(jī)械功能杰出等特色。將其與傳統(tǒng)兩烯酸聚氨酯涂料的功能進(jìn)行比較，能夠得出絕無(wú)差勁之處的結(jié)論。唯一的缺陷是價(jià)格偏高，現(xiàn)在大面積推廣尚存在必定的困難。可是相信跟著有機(jī)硅工業(yè)的進(jìn)一步開(kāi)展，技能的進(jìn)一步完善，成本的進(jìn)一步降低，有機(jī)硅改性丙烯酸樹(shù)脂系涂料終將替代傳統(tǒng)的聚脂聚氨酯、丙烯酸聚氨酯系涂料，成為21世紀(jì)新一代轎車修補(bǔ)漆的主要產(chǎn)品。
Article source: Qingyuan Automotive Repair Paint http://www.jinliangxincai.com/
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