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Modified phosphate cement-based fireproof coating material and preparation method thereof

A fire retardant coating, cement-based technology, applied in the field of fire retardant coatings, can solve problems such as weak adhesion

Inactive Publication Date: 2017-09-01
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems in the current decorative fireproof coatings, such as weak self-adhesive force

Method used

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  • Modified phosphate cement-based fireproof coating material and preparation method thereof
  • Modified phosphate cement-based fireproof coating material and preparation method thereof
  • Modified phosphate cement-based fireproof coating material and preparation method thereof

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preparation example Construction

[0040] The present invention does not have any special requirements for the preparation method of the modified phosphate cement-based fireproof coating, and all raw material components can be directly mixed evenly. In the present invention, the preparation method of the phosphate cement fireproof coating preferably comprises the following steps:

[0041] Dispersing the fibers with water to obtain a fiber water mixture;

[0042] mixing dihydrogen phosphate, magnesium source and composite retarder to obtain cement base material;

[0043] The fiber water mixture is mixed with the cement base material to obtain the modified phosphate cement-based fireproof coating.

[0044]The invention disperses the fiber with water to obtain the water mixture of the fiber. In the present invention, the fiber is dispersed in water preferably by ultrasonic dispersion; the ultrasonic frequency of the ultrasonic dispersion is preferably 35000-45000 Hz, more preferably 38000-42000 Hz, most preferab...

Embodiment 1

[0063] According to the ratio of 3mm glass fiber, potassium dihydrogen phosphate, burnt magnesia, composite retarder and water in Table 4, prepare phosphate cement fireproof coating.

[0064] The fibers were ultrasonically dispersed with water, the ultrasonic frequency was 40,000 Hz, the ultrasonic power was 120 W, and the ultrasonic dispersion time was 5 minutes to obtain a fiber water mixture.

[0065] Potassium dihydrogen phosphate, magnesium source and composite retarder were stirred and mixed at a stirring speed of 140 r / min, and the stirring and mixing time was 1 min to obtain a cement paste base material.

[0066] The fiber water mixture and the cement slurry base material are sequentially mixed at low speed and high speed to obtain the phosphate cement fireproof coating. The stirring rate of the low-speed mixing is 140r / min; the time of the low-speed mixing is 30s. The stirring rate of the high-speed mixing is preferably 285r / min; the time of the high-speed mixing is ...

Embodiment 2

[0071] According to the ratio of 6mm glass fiber, sodium dihydrogen phosphate, overfired magnesia, composite retarder and water in Table 5, prepare phosphate cement fireproof coating.

[0072] The fibers were ultrasonically dispersed with water, the ultrasonic frequency was 40,000 Hz, the ultrasonic power was 120 W, and the ultrasonic dispersion time was 5 minutes to obtain a fiber water mixture.

[0073] The sodium dihydrogen phosphate, the magnesium source and the composite retarder were stirred and mixed at a stirring rate of 140 r / min, and the stirring and mixing time was 1 min to obtain a cement paste base material.

[0074] The fiber water mixture and the cement slurry base material are sequentially mixed at low speed and high speed to obtain the phosphate cement fireproof coating. The stirring rate of the low-speed mixing is 140r / min; the time of the low-speed mixing is 30s. The stirring rate of the high-speed mixing is preferably 285r / min; the time of the high-speed m...

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Abstract

The invention provides a modified phosphate cement-based fireproof coating material and a preparation method thereof. The modified phosphate cement-based fireproof coating material is prepared from the following raw materials in parts by mass: 10 to 20 parts of dihydric phosphate, 5 to 15 parts of a magnesium source, 0.5 to 1.5 parts of a composite retarder, 0.1 to 2 parts of fiber and 1 to 10 parts of water. The modified phosphate cement-based fireproof coating material provided by the invention has good working performance, the setting rate is appropriate, the longest initial setting time can be up to 62 minutes, the fluidity is 150 to 210 mm, and film formation is easy; the modified phosphate cement-based fireproof coating material has a higher adhesion force with a substrate after film formation and hardening of the modified phosphate cement-based fireproof coating material.

Description

technical field [0001] The invention relates to the technical field of fireproof coatings, in particular to a modified phosphate cement-based fireproof coating and a manufacturing method thereof. Background technique [0002] Non-intumescent decorative fire retardant coating is a kind of coating with both decorative function and fire retardant function. It is a common coating film at room temperature and plays a decorative role on the coated substrate; Spread, to protect the base material, so that people have enough time to organize rescue. [0003] Non-intumescent fireproof coatings play a fireproof role mainly through three ways: one is the flame retardancy or non-combustibility of the coating itself; the other is that it decomposes and releases non-combustible gases (such as water vapor, ammonia, , carbon dioxide, etc.), to dilute oxygen and flammable gases; the third is to form a non-flammable inorganic "glaze film layer" under flame or high temperature conditions. The ...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B111/28
CPCC04B28/34C04B2111/28C04B2103/22C04B22/066C04B14/42
Inventor 丁铸崔棚徐沐睿洪鑫李玉玉方媛
Owner SHENZHEN UNIV
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