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Dihydrate gypsum based fireproof coating material

A technology of fire retardant coating and dihydrate gypsum, applied in the field of comprehensive utilization of industrial waste resources and fire retardant coating, can solve the problems of high resource consumption, empty drum, energy loss, etc., and achieve good fire resistance, cost reduction and energy saving. Effect

Inactive Publication Date: 2016-10-26
马振义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cement-based fire retardant coatings are prone to cracking and hollowing, and cement is a three-high material with high resource consumption, high energy consumption, and high pollution
In the application of gypsum-based fireproof coatings, hemihydrate gypsum is mostly used for modification and preparation. Hemihydrate gypsum needs to be obtained by calcining and aging the waste residue discharged after wet desulfurization in the industry. Calcination increases energy consumption and causes energy loss

Method used

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  • Dihydrate gypsum based fireproof coating material
  • Dihydrate gypsum based fireproof coating material
  • Dihydrate gypsum based fireproof coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] By weight, weigh 25 parts of dihydrate gypsum, 26 parts of fluorogypsum, 18 parts of slag powder, 6 parts of cement, 6 parts of early strength agent, 1.1 parts of coagulation accelerator, 2 parts of alkaline activator, and 0.3 parts of cellulose ether , 3 parts of redispersible rubber powder, 0.05 part of thixotropic agent, and 0.2 part of PP fiber are put into the dry powder mixer, mixed and stirred for 3 minutes to obtain a uniformly mixed mixture, and then the stirred mixture is put into the mixer, Add 70 parts of water, mix and stir for 3 minutes, then add 10 parts of expanded vermiculite and 15 parts of vitrified microbeads, and stir for 2 minutes to obtain a dihydrate gypsum-based fireproof coating.

[0025] The dry density of the obtained dihydrate gypsum-based fireproof coating is 498kg / m 3 , the flexural strength is 0.58MPa, the compressive strength is 1.6MPa, the softening coefficient is 0.78, and the combustion performance is A2 level.

Embodiment 2

[0027] By weight, weigh 19 parts of dihydrate gypsum, 23 parts of fluorogypsum, 15 parts of slag powder, 8 parts of cement, 10 parts of early strength agent, 1 part of coagulation accelerator, 2.5 parts of alkaline activator, and 0.2 parts of cellulose ether , 3 parts of redispersible rubber powder, 0.06 part of thixotropic agent, and 0.3 part of PP fiber are put into the dry powder mixer, mixed and stirred for 3 minutes to obtain a uniformly mixed mixture, and then the stirred mixture is put into the mixer, Add 75 parts of water, mix and stir for 3 minutes, then add 19 parts of expanded vermiculite and 6 parts of vitrified microbeads, and stir for 2 minutes to obtain a dihydrate gypsum-based fireproof coating.

[0028] The dry density of the obtained dihydrate gypsum-based fireproof coating is 451kg / m 3 , the flexural strength is 0.45MPa, the compressive strength is 1.2MPa, the softening coefficient is 0.72, and the combustion performance is A2 level.

Embodiment 3

[0030] By weight, weigh 21 parts of dihydrate gypsum, 26 parts of fluorogypsum, 18 parts of slag powder, 10 parts of cement, 6 parts of early strength agent, 0.8 part of coagulation accelerator, 2 parts of alkaline activator, and 0.25 part of cellulose ether , 2.5 parts of redispersible rubber powder, 0.05 parts of thixotropic agent, and 0.3 parts of PP fiber are put into the dry powder mixer, mixed and stirred for 3 minutes to obtain a uniformly mixed mixture, and then the stirred mixture is put into the mixer, Add 71 parts of water, mix and stir for 3 minutes, then add 12 parts of expanded vermiculite and 13 parts of vitrified microbeads, and stir for 2 minutes to obtain a dihydrate gypsum-based fireproof coating.

[0031] The dry density of the obtained dihydrate gypsum-based fireproof coating is 468kg / m 3 , the flexural strength is 0.66MPa, the compressive strength is 1.18MPa, the softening coefficient is 0.87, and the combustion performance is A2 level.

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Abstract

The invention discloses a dihydrate gypsum based fireproof coating material and relates to the fields of resource-converting comprehensive utilization of industrial wastes and fireproof coating materials. The dihydrate gypsum based fireproof coating material disclosed by the invention contains the following ingredients in parts by weight: 18-35 parts of dihydrate gypsum, 20-35 parts of fluorgypsum, 10-25 parts of slag powder, 5-15 parts of cement, 5-15 parts of early strength agent, 0.5-1.5 parts of setting accelerator, 10-25 parts of expanded vermiculite, 5-20 parts of vitrified microbeads, 1-5 parts of alkaline excitant, 0.1-0.3 part of cellulose ether, 0.5-5 parts of redispersible glue powder, 0.01-0.06 part of thixotropic agent, 0.1-0.5 part of PP fibers and 65-78 parts of water. According to the dihydrate gypsum based fireproof coating material, the fireproof capability is good, the raw materials are not required to be calcined and baked, the energy consumption is low, and the cost is low.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of industrial waste resources and fireproof coatings, in particular to a dihydrate gypsum-based fireproof coating. Background technique [0002] At present, there are only cement-based fire-resistant coatings in the domestic thick-layer fire-resistant coating market, and there is no gypsum-based fire-resistant coating at all, let alone dihydrate gypsum-based fire-resistant coatings. Cement-based fire retardant coatings are prone to cracking and hollowing, and cement is a three-high material with high resource consumption, high energy consumption, and high pollution. In the application of gypsum-based fireproof coatings, hemihydrate gypsum is mostly used for modification and preparation. Hemihydrate gypsum needs to be obtained by calcining and aging the waste residue discharged after wet desulfurization in the industry. Calcination increases energy consumption and causes energy loss. Con...

Claims

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Application Information

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IPC IPC(8): C04B28/16
CPCC04B28/16C04B2111/28C04B2201/20C04B2201/50
Inventor 马振义马振家
Owner 马振义
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