Appearance: Oily liquid
Color (PT-CO): ≤50#
Total tin content：≥18%
Specific gravity (25C): 1.05±0.02
Volatile matter: ≤0.4%
Refractive index: 1.468-1.475
The principle of this kind of sand texture agent is to increase the melt viscosity of the powder coating, and the compatibility between the sand texture agent and the film-forming material is poor, and the surface tension of the molten extrudate is changed, so that the molten extrudate becomes a spiral. During film formation, a sand-like coating film with rough surface and poor leveling is formed. This type of sand-graining agent is SA207 sand-graining agent of Lu’an Jietongda Chemical Co., Ltd., and the dosage is 0.8 of the total formula. %~1.5%; Tex 11 sand texture agent of Guangzhou Shengmu Chemical Co., Ltd. and AS 311 sand texture agent of Guangzhou Tianlong Chemical Co., Ltd. The amount of AS311 sand texture agent is 0.2% to 1% of the total formula. The powder coating made by the sand texture agent is not easily affected by the manufacturing process conditions, the manufacturing stability of the appearance of the coating film sand texture is good, and the storage stability of the cheap ptfe powder powder coating is relatively good. The appearance and gloss of this powder coating film are affected by the amount of sand texture agent, and also by the type and amount of filler, especially organic bentonite.
The matting sand texture wax AS03/AS05 is a polyvinyl fluoride modified polyethylene micropowder wax, which can also impart matting texture to powder coatings. This matting texture agent is a white powder with a relative density of about 1.03, a bulk density of 285g/L, a melting point of about 112°C, and an average particle size of about 9jm. The addition amount in the formula is about 0.5% to 1% of the total. If you want to get a product with fine coating sand patterns and better scratch resistance, you can use pertetrafluoroethylene texture wax AS21, AS22, AS23, etc. The amount of AS21 is 0.1% to 0.3% of the total formula, and the amount of AS22 is 0.03%~0.15% of the total formula, and the dosage of AS23 is 0.01% of the total formula.
Furthermore, TL250 and TL310 sand texture agents from Guangzhou Tianlong Chemical Co., Ltd. can also be used. The dosage of TL250 is 0.1%~0.3% of the total formula, and the dosage of T1310 is 1%~3% of the total formula.
The above-mentioned sand texture agents are all added during the pre-mixing of the raw materials, and dispersed by melt extrusion mixing method. If used with fillers such as humectus, sand texture powder coatings with different thickness and texture can be obtained. If an organic compound is used to modify bentonite, it can also be used alone to obtain sand grain powder coatings.
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