Preparation method of novel fireproof coating for steel structure

Abstract

The invention relates to a preparation method of a novel fireproof coating for a steel structure. The preparation method comprises the following steps: 1) proportioning according to weight parts and selecting the following raw materials for subsequent use: 20 to 30 parts of ammonium polyphosphate, 30 to 40 parts of film-forming basic material, 20 to 25 parts of expanding agent, 20 to 30 parts of viscosity agent, 6 to 8 parts of charring agent, 1 to 1.5 parts of leveling agent, 0.5 to 1 part of mildew inhibitor, 0.5 to 1 part of preservative, 10 to 12 parts of stabilizing agent, 5 to 8 parts ofdispersing agent and 30 to 40 parts of water; adding the water, the ammonium polyphosphate, the film-forming basic material, the viscosity agent, the charring agents and the dispersing agent into a dispersion cylinder; 2) stirring for 30 to 40 minutes to obtain an evenly-mixed mixture; grinding the mixture obtained in the step (2) and sieving the mixture by using a 120-mesh sieve; adding the expanding agent, the mould inhibitor, the leveling agent, the stabilizing agent and the preservative into the mixture obtained in the step (3) and fully mixing, dispersing the mixture for 35 to 45 minutesat rotation speed of 550 to 650r / min and then discharging to obtain the fireproof coating for the steel structure.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a preparation method of a novel fireproof coating. Background technique [0002] With the increase of people's safety awareness, the application of fire retardant coatings is becoming more and more extensive. However, there are still many technical difficulties in the development of fire-resistant coatings. The main problems to be solved are to improve water resistance, shorten drying time, prolong fire-resistant time, improve storage stability, and increase decorative properties. [0003] To sum up, the indoor thin steel structure fire retardant coatings currently on the market have disadvantages such as poor water resistance, poor storage stability, short fire resistance time, long drying time, and poor decoration. Therefore, it is an inevitable trend for the fire protection of indoor steel structures to research and develop excellent performance and environment-friendly in...

AI Technical Summary

Problems solved by technology

However, there are still many technical difficulties in the development of fire-resistant coatings. The main problems to be solved are to improve water resistance, shorten drying time, prolong fire-resistant time, improve storage stability, and increase decorative properties.

[0003] To sum up, the indoor thin steel structure fireproof coatings currently on the market have disadvantages such as poor water resistance, poor storage stability, short fire resistance time, long drying time, and poor decoration.