How to use adhesion promoter FS-1121?

2021-11-18   Pageview:104

It is recommended to prepare FS-1121 into a solvent solution with 2%-4% solids, and use it with paint in the form of open oil and water.

Storage condition: 0-40 degree Celsius

 

 

 

 

 

 

 

 

 

 

 

 

Commonly used in epoxy powder coatings are 2-methylimidazole, 2-benzimidazoline, cyclic amidine, pyridine, triazine and other compounds. Commonly used in polyester epoxy powder coatings are 2-methylimidazole, 2-phenylimidazoline, benzyltriethylammonium chloride, benzyltriethylammonium bromide, etc., used in polyester powder coatings There are quaternary ammonium bromide (SA230, SA240 of Jietongda Chemical Co., Ltd.), triphenylphosphine, N-methylsulfonyl-p-toluenesulfonamide (ACR IRON 32-18A texturing agent) and so on. Dibutyl tin laurate and the like are used in polyurethane powder coatings.

Anti-yellowing agent is an additive added to prevent yellowing of the coating film during the curing process of powder coatings (or under sunlight). This additive is generally added to white or light-colored powder coating varieties. One of the main shortcomings of powder coatings is the high baking and curing temperature. The baking temperature of most varieties is around 180°C. In order to improve production ptfe solvent dispersion efficiency, the baking curing temperature and the baking curing time are often increased to meet the requirements.

In this case, the high temperature has more obvious oxidation effect on organic and polymer compounds, which makes the powder coating film easier to yellow or change color. Of course, some paint varieties will also produce coating film under direct or indirect sunlight. The problem of yellowing. Adding anti-yellowing agents and antioxidants to powder coating formulations is to reduce and overcome the yellowing problem of powder coating film caused by high temperature, air and sunlight.

The varieties used in powder coatings include Guangzhou Tianlong Chemical Co., Ltd.’s AS110 indoor anti-yellowing agent and AS130 high-temperature anti-yellowing agent. Yellowing effect, the dosage is 0.5% to 1% of the total formula; AS130 temperature resistance 300 ℃, suitable for anti-oxidation within 250 ℃, has anti-yellowing effect, the dosage is 0.5% to 1% of the total formula, both Disperse by melt extrusion mixing method. The anti-yellowing agent of Hangzhou Zhongshun Chemical Co., Ltd. can improve the weather resistance of the coating film and help eliminate the yellowing problem of the coating film. The dosage is 1% of the total formula, and it is dispersed by the melt-extrusion mixing method; the antioxidant dosage is 0.8% of the total formula is dispersed by melt extrusion mixing method. In addition, Ciba also has many varieties of anti-yellowing agents, which can be selected according to requirements.

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