Application of glass powder in coatings

First, what is glass powder?
glass powder is an inorder-like cube hard ultra-fine particle powder with a white appearance.
production of raw materials such as high-temperature high-purity silicon oxide and alumina, and then through the ultra-clean production process, the formation of a disorderly structure of glass transparent powder.
glass powder has the following characteristics:
The substance is a chemically stable, acid-alkaline, chemical inert, low expansion coefficient of ultra-weather-resistant powder material;
The substance is a highly transparent powder, small particle size, good dispersion, high transparency, good anti-sinking effect


, the role of glass powder
1, glass powder dispersion is good, and resin and paint system other components of good solubility.
2, glass powder after a number of surface treatment, in the paint system for filling, paint film without blue light, good reappearability.
3, used in high-grade scratch-resistant paint, can increase the hardness and toughness of the paint, improve the anti-scratch performance of the paint film, with the effect of de-lighting, can improve the weather resistance of the paint film.
3. The role of glass powder in coatings
the role of low melting point glass powder in coatings:
silicone resistant to high temperature paint with low melting point glass powder, in high temperature coating formulation plays an important role in secondary film. At high temperature stage, the melting low melting point glass powder forms a complete, dense, adhesion layer. When the temperature reaches the melting point of the low melting point glass powder, the low melting point glass powder melts instead of the silicone resin, which has been decomposed in large quantities, and then becomes a film, so that the high temperature coating completes the transition from organic layer to inorganic layer.
PLT406 lead-free low melting point glass powder is an environmentally friendly, non-toxic, wide range of applications of low melting point glass powder.
1, low melting point glass powder introduced
(1) moderate and stable
softening temperature and melting temperature range moderate and stable. Melting adhesion is strong, and the temperature resistance of the secondary film coating is excellent.
(2) adhesion is strong
adapts to the expansion coefficient of various metal substrates, and has strong adhesion.
(3) good color preservation
good melting transparency, good thermal stability, good color preservation for all types of inorgeable high temperature pigments.
(4) weather resistance is good
impact resistance, salt spray resistance, acid and alkali resistance, weather resistance is good.
2, preparation of high temperature coating formula with low melting point glass powder
substance
parts
silicone resin
30-40
low melting point glass powder
30-45
heat-resistant pigments
7-10
aluminum powder
2-10
talcum powder
1-5
mica powder
1-7
dispersants
1-2
silane coupled agents
1-3
3, operating process
(1) add quantitative low melting point glass powder, pigments, solvents, dispersants in silicone resins, dispersed evenly with a blender.
(2) is ground in the sander until fine and filtered with a standard sieve.
(3) apply the prepared paint to surface-treated horse-port iron plates and cold-rolled steel plates.
good silicone resin as a substing supplemented by low melting point glass powder and mica powder, talcum powder and other heat-resistant pigment fillers, through formula optimization can be made resistant to 700 degrees of high temperature coatings.
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