飞机蒙皮高固体分航空涂料的研制

发布时间：2019-03-15 16:46

【摘要】：我国民用航空快速成长,市场需求巨大,其配套装饰防护涂料产品如高固体分聚氨酯涂料等的用量逐年增加,进口产品价格高,增加了产品制造成本和维修成本,大规模采用进口产品无形中增加了加工制造成本和维修成本。更重要的是,我们不能把国内市场拱手予人又受制于人,因此我们要尽快生产出自己的商用飞机用配套涂料。本课题研究通过以下三个步骤来制备飞机蒙皮高固体分航空涂料：首先,采用六氢苯酐(HHPA)、1,6-己二醇、1,4-环己烷二甲醇(CHDM)、三羟甲基丙烷(TMP)、三羟乙基异氰脲酸酯(THEIC)、叔碳酸缩水甘油酯通过梯度升温和分批投料的方式进行酯化脱水反应合成高羟值聚酯树脂,测试结果表明：当n(CHDM):n(THEIC):n(TMP)=0.3:0.4:1,叔碳酸缩水甘油酯用量占固体树脂总量的15%时,聚酯树脂具有较为优异的性能。其次,通过有机硅中间体接枝反应的方式对高羟值聚酯树脂进行改性。测试结果表明：当有机硅中间体占改性聚酯树脂的用量在60%左右时,制备的有机硅改性高羟值聚酯树脂具有较好的性能；树脂羟值大于240mgKOH/g时,会影响到树脂的储存稳定性。最后,通过筛选固化剂种类及配比,选择搭配功能性颜填料、助剂和溶剂制备飞机蒙皮高固体分航空涂料。经各项性能测试后,该涂料达到了最新的蒙皮涂料规范要求,符合国家现行的环保政策法规。
[Abstract]:With the rapid growth of civil aviation in China, the market demand is huge. The consumption of the matching decorative and protective coating products such as high solid polyurethane coatings is increasing year by year, the price of imported products is high, and the manufacturing cost and maintenance cost of the products are increased. The large-scale adoption of imported products increases the manufacturing cost and maintenance cost. More importantly, we cannot sell and control the domestic market, so we need to produce our own commercial aircraft coatings as soon as possible. In this paper, we study the preparation of aircraft skin high solid aeronautical coatings through the following three steps: first, using hexahydrophthalic anhydride (HHPA), 1,6-hexanediol, 1,4-cyclohexane dimethyl alcohol (CHDM), trimethylol propane (TMP),. Trihydroxyethyl isocyanurate (THEIC),) tert glycidyl carbonate was synthesized by esterification dehydration reaction with gradient heating and batch feeding, and high hydroxyl value polyester resin was synthesized. The test results showed that the polyester resin had excellent properties when n (CHDM): n (THEIC): n (TMP) = 0.3 脳 0.4 ml and the content of glycidyl tert carbonate accounted for 15% of the total solid resin. Secondly, the high hydroxyl value polyester resin was modified by organosilicon intermediate graft reaction. The test results show that the silicone modified high hydroxyl polyester resin has better performance when the content of silicone intermediate is about 60% of the modified polyester resin. When the hydroxyl value of the resin is greater than 240mgKOH/g, the storage stability of the resin will be affected. Finally, the aircraft skin high-solid aeronautical coatings were prepared by selecting the type and proportion of curing agents, selecting functional pigment fillers, auxiliaries and solvents to prepare aircraft skin high-solid aeronautical coatings. After various performance tests, the coating has reached the latest skin coating specification requirements, in line with the current national environmental policies and regulations.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ637

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