The main component of the heavy calcium powder is calcium carbonate, which has high temperature resistance and good acid resistance. It can be used as filler in putty powder and is usually used for internal wall coating. Usage: Mix in the putty mixer, then mix the talcum powder and the heavy calcium powder, and then mix the glue powder and the special cellulose for putty.
The main advantages of heavy calcium powder in putty powder are to improve product hardness, reduce production cost, have good acid resistance, insoluble in water, good whiteness composition, and even particles.
Heavy calcium powder has the functions of weather resistance, color retention, mold resistance, etc. It is suitable for exterior wall coatings. Mainly used for original paint, putty, wrinkle paint and latex paint for building exterior wall
The general putty powder is generally called 821 putty powder, which is used for the coating and scraping of interior walls, but it is not waterproof, and there is a little powder loss. However, this kind of production is simple. As long as you buy a putty powder mixer, add talcum powder, heavy calcium powder, and then add cellulose and glue powder for putty powder, you can produce putty powder.
The function of heavy calcium powder in putty powder is to improve the hardness.
Formula 1: high-quality rubber powder 5%, Shuangfei powder 70%, gray calcium 25%
Formula 2: (low cost putty powder) Shuangfei powder 90%, inferior rubber powder 10%
Formula 1 can be used for covering, and Formula 2 can be used for priming. Therefore, rubber powder and Shuangfei powder can be used as putty powder, and they are low-cost formulas
Summary:
The hardness of heavy calcium powder with high calcium content is good in putty powder, while the hardness of low calcium content is poor, and the powder is easy to fall off.