A thermosetting powder coating material includes powder particles that include a core which contains a thermosetting resin and a thermosetting agent having a blocked isocyanate group and a resin coating portion which contains a thermosetting resin having a glass transition temperature of equal to or higher than 45° C. and coats a surface of the core, and satisfy the followings (1) to (4): (1) a volume particle diameter distribution index GSDv of the powder particles is equal to or less than 1.50; (2) an average circularity of the powder particles is equal to or greater than 0.96; (3) a melting temperature of the powder particles measured according to a ½ method by using a flow tester is from 90° C. to 115° C.; and (4) an exothermic peak is within a range of from 80° C. to 150° C. in a differential scanning calorimetry measurement of the powder particles.
一种热固性粉末涂料材料包括粉末颗粒,该粉末颗粒包括含有热固性
树脂和具有封端
异氰酸酯基团的热固性助剂的芯部,以及含有
玻璃化转变温度等于或高于 45°C 的热固性
树脂并涂覆在芯部表面的
树脂涂层部分,并且满足以下条件 (1)至 (4):(1) 粉末颗粒的体积颗粒直径分布指数 G
SDv 等于或小于 1.50;(2) 粉末颗粒的平均圆度等于或大于 0.96;(3) 使用流量测试仪按照 ½ 方法测量的粉末颗粒的熔化温度为 90 摄氏度至 115 摄氏度;(4) 在对粉末颗粒进行差示扫描量热测量时,放热峰值在 80 摄氏度至 150 摄氏度的范围内。