为适应西北地区的恶劣自然环境,充分利用西北地区的风力资源,研制了一种耐磨性优异、耐候性良好的聚氨酯风电叶片涂料。该涂料由聚酯多元醇预聚物、多异氰酸酯三聚体及颜填料制备而成,讨论了不同聚酯多元醇预聚物、不同固化剂及颜填料和助剂对涂层性能的影响。结果表明:当n(聚己内酯二元醇)∶n(聚己内酯三元醇)∶n(聚己内酯四元醇)=4∶5∶1,固化剂采用N3390,颜填料选择纳米氧化锌、纳米二氧化硅、钛白粉,颜基比为0.8左右,添加助剂BYK-161、BYK-306、BYK-054及光稳定剂Tinuvin1130和Tinuvin292时,涂层具备最好的性能。

In order to adapt to the harsh natural environment in the northwest region and make full use of the wind resources in the northwest region, a polyurethane coatings for turbine blade with excellent wear-resistance and weather-resistance was developed. The coatings was prepared with polyester polyol prepolymer, polyisocyanate trimer, pigments and fillers. The effects of different polyester polyol prepolymers, curing agents, pigments, fillers and auxiliaries on coating properties were discussed. The results showed that the performance of the coating was the best when the molar ratio of polycaprolactone diol, triol, polycaprolactone tetraol was 4 ∶ 5 ∶ 1,the curing agent was N3390, and the pigment and filler were nano-zinc oxide and nano-silica, titanium dioxide,the pigment/binder ratio was about 0.8, additives were BYK-161, BYK-306, BYK-054 and light stabilizers were Tinuvin1130 and Tinuvin292.