| 用于聚酯环氧混合型粉末涂料的聚酯树脂carboxylated
polyester resin for hybrid powders |
特点:用JYZ003制造的聚酯环氧混合型粉末涂料具有比较平衡的性能并用于半光粉末涂料。JYZ003
is the saturation carboxyl polyester resin for semi---gloss
powders and polyester/epoxy hybrid powder coating system
that has general purpose .
外观appearance:浅黄色细颗粒或片状pale yellow flake
酸值acid number: 25±5mgKOH/g
粘度viscosity at 175℃: 3.5---6Pa·S
软化点softening point(环球法): 95----110℃
玻璃化温度glass transition(DSC): >50℃ |
参考配方starting formulation
|
|
| |
质量比part by weight |
| JYZ003 |
41.65 |
28.2 |
25.54 |
14.8 |
| 环氧树脂epoxy resin 663U |
17.85 |
28.8 |
30.96 |
39.7 |
| 钛白粉titanium dioxide |
20 |
20 |
20 |
20 |
| 硫酸钡barium sulphate |
20 |
20 |
20 |
20 |
| 流平剂leveling agent |
0.5 |
0.5 |
0.5 |
0.5 |
(聚丙烯酸丁酯100% active principle)
。B68 |
0 |
2.5 |
3 |
5 |
| 光泽gloss(60°) |
90% |
50% |
40% |
10% |
|
固化条件curing requirement:190℃15分钟minutes
|
|
| 涂膜基本性能basic
properties of coating film(膜厚film thickness 60μm) |
冲击强度impact(正direct反reverse)
铅笔硬度pencil hardness
弯曲bending(ф2mm)
|
50Kg·cm
HB---1H
通过pass |