【摘要】 本文测定了超临界CO₂（SC-CO₂）-氟碳清漆-稀释剂拟三元体系相图,用L9（34）正交表考察了温度、压力、CO₂含量对含有超临界CO₂涂料液雾化效果和喷雾锥角的影响.结果表明,当温度低于70℃、压力大于10MPa、CO₂含量小于32%时均能使喷涂液处在稳定单相区,随着温度、压力和CO₂含量的增大,雾化粒子变细,喷雾锥角变大.在14MPa、CO₂含量32%（wt）和60℃下喷涂,其涂膜主要性能均达到了国家标准,喷涂过程VOC值降低了43.5%.更多还原

【Abstract】 The mimic ternary phase behavior of SC-CO₂-fluorocarbon resin-thinner was studied,the influences of temperature,pressure and CO₂ content on the magnitude of atomization particles and spraying angle were investigated by using L9（34）orthogonal experiments.The experimental results indicated that Temperature was under 70℃,pressure was above 10MPa, content of CO₂ was under 32%,which made the coating in the sigle-phase region,the atomization particles were smaller and the spraying angle was bigger along with the higher temperature, pressure and CO₂ content.Spraying under condition of 14MPa,60℃,CO₂:30%,the capabilities of coating film were accorded with the standard of the state,the VOC of coating reduced 43.5%.更多还原