华樾精细化工(昆山)有限公司
环氧平涂出现小颗粒如何解决
环氧面漆配方1000KGS(Formula)
350KG | |
20KG | |
3、苯甲醇(BA) | 20KG |
4、分散剂110(华樾) | 5KG |
5、消泡剂750s | 2KG |
6、流平剂1484 | 3KG |
7、防沉剂 | 5KG |
8、1250目滑石粉或碳酸钙 | 50KG |
9、1500硫酸钡 | 556KG |
10、色浆(劳安) | 80-100KG(中灰/艳绿)自流平色浆多些 |
设计工艺(Processing):
一、 先将1,2,3,4放入分散机中,转速300-700转/分钟,10-20分钟,将树脂有效打开。
二、 再将4,5,6,7投入分散机中,转速1100-1300转/分钟,30-40分钟,
三、 再将8,9投入分散机中,转速300-700转/分钟,速度降低是为了减少气泡的产生
四、 最后将10投入分散机中,
五、 放入砂磨机研磨
配漆(平涂)
面漆 | 4/5 |
固化剂 | 1 |
环氧漆平涂产生小颗粒的原因
一、 地面清洁不干净
二、 环氧树脂含量低,导致树脂对粉料的包裹性差。
三、 各种粉体团聚,分散剂分散能力差。
四、 色浆团聚,色浆在极性体系的相溶性差,解絮凝能力差
五、 分散剂或稀释剂及性太强,或用量的原因,导致短毛辊筒掉毛。
HY Chemicals (Kunshan) Co., Ltd.
Solution for Small Particles in Epoxy Flat Coating
Epoxy Topcoat Formula for 1000KGS
350KG | |
20KG | |
3、Benzyl alcohol (BA) | 20KG |
4、Dispersant 110 (HY Chemical) | 5KG |
5、Defoamer 750s | 2KG |
6、Leveling agent 1484 | 3KG |
7、Anti-settling agent | 5KG |
8、1250 mesh talcum powder or calcium carbonate | 50KG |
9、1500 barium sulfate | 556KG |
10、Color paste (Laoan Chemical) | 80-100KG(medium gray/bright green) more self-leveling color paste |
Processing:
1. First, put 1, 2, 3, and 4 into the disperser, rotate at 300-700 rpm for 10-20 minutes to effectively open the resin.
2. Then add 4, 5, 6, and 7 into the disperser, rotate at 1100-1300 rpm for 30-40 minutes.
3. Then add 8 and 9 into the disperser, rotate at 300-700 rpm. The speed is reduced to minimize bubble formation.
4. Finally, add 10 into the disperser.
5. Grind in a sand mill.
Mixing Paint (Flat Coating)
Topcoat | 4/5 |
Curing Agent | 1 |
Reasons for Small Particles in Epoxy Flat Coating
1. The ground is not clean.
2. Low epoxy resin content, leading to poor resin encapsulation of the powder.
3. Agglomeration of various powders, poor dispersant dispersing ability.
4. Color paste agglomeration, poor compatibility of color paste in polar systems, poor deflocculation ability.
5. Dispersant or diluent too strong, or due to the amount used, causing short hair roller to shed.
ADDRESS:5-1 Lide Industrial Park Huqiao Town,Kunshan Jiangsu Province
ADD:江苏昆山花桥立德企业园5-1