Preparation method of gypsum mine slag cement-based thick-type steel structure fireproof, anticorrosive, thermal-insulation integrated coating

A technology of slag cement and steel structure, which is applied in the direction of cement coating, anti-corrosion coating, fire-proof coating, etc. It can solve problems such as easy softening, hydrogen evolution corrosion, and fire protection failure, and achieve comprehensive cost anti-corrosion, strong market competitiveness, and excellent fire performance. Effect

Inactive Publication Date: 2017-06-20
SOUTHWEAT UNIV OF SCI & TECH +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the anti-corrosion protection of steel structure surface is mainly solvent-based, and the solvent-based anti-corrosion coating mainly uses epoxy resin, polyurethane resin, chlorine-containing polymer, phenolic resin, etc. as the film-forming base material. The research on resin base materials mainly focuses on water-based silicon-containing, fluoropolymer, water-based epoxy resin and water-based polyurethane resin. The heat resistance is poor, and it is easy to soften at high temperature; among them, resins with relatively high fire resistance, such as epoxy resin, will soften when the temperature reaches 180-200 ° C, and thermal oxidation decomposition will occur. Above 290 ° C, the epoxy cured product The main chain will be broken, and the phenolic resin can only withstand the temperature of 250°C. Once it exceeds the temperature, it will soften and fall off. Generally, in case of fire, the heat from the cargo yard will be transmitted to the surface of the steel structure finish through the fireproof layer. The temperature can reach 400-500°C. Anti-corrosion coatings using these resins cannot withstand such a high temperature and soften, causing the fire-resistant layer to fall off from the bonded interface between the fire-resistant layer and the anti-corrosion layer, causing the fire to directly face the steel structure, causing fire protection failure, and seriously threatening people's life and property safety; ( 2) Solvent-based anti-corrosion coatings contain a large amount of organic so...

Method used

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  • Preparation method of gypsum mine slag cement-based thick-type steel structure fireproof, anticorrosive, thermal-insulation integrated coating
  • Preparation method of gypsum mine slag cement-based thick-type steel structure fireproof, anticorrosive, thermal-insulation integrated coating
  • Preparation method of gypsum mine slag cement-based thick-type steel structure fireproof, anticorrosive, thermal-insulation integrated coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for preparing a fire-resistant, anti-corrosion, and heat-insulating integrated coating for a thick steel structure. The preparation process is as follows:

[0058] 1. Preparation of gypsum slag cement:

[0059] a. Gypsum slag cement is batched according to the raw material components and mass percentages in Table 1:

[0060] Table 1: Formulations of Gypsum Slag Cement

[0061] material name cement clinker plaster blast furnace slag content 54％ 9％ 37％

[0062]b. Preparation process: Grind blast furnace slag, gypsum and Portland cement clinker together or separately and then mix them; pack them for use.

[0063] 2. Preparation of fire-resistant steel structure anti-corrosion coating

[0064] Preparation of component A:

[0065] a. Component A is based on 10% acrylic waterproof elastic emulsion, 5% styrene-acrylic emulsion, 5% chlorine partial emulsion, 20% mica powder, 5% titanium dioxide, 5% iron red powder, and 0.3% ammonia water ...

Embodiment 2～24

[0082] Mainly change the ratio of each component in the fireproof coating and the ratio of the raw materials of gypsum slag cement, and each component in the anti-corrosion primer is consistent with Example 1;

[0083] A method for preparing a fire-resistant, anti-corrosion, and heat-insulating integrated coating for a thick steel structure. The preparation process is as follows:

[0084] 1. Preparation of gypsum slag cement: preparation of gypsum slag cement:

[0085] a. Gypsum slag cement is prepared according to Table 3:

[0086] Table 3: Formulations of Gypsum Slag Cement

[0087]

[0088]

[0089] b. Preparation process: Grind dry blast furnace slag, gypsum and Portland cement clinker together or separately and then mix them; pack them for use.

[0090] 2. Preparation of fire-resistant steel structure anti-corrosion coating

[0091] Anticorrosion primer composition and preparation method are all consistent with embodiment 1;

[0092] 3. Preparation of fireproof ...

Embodiment 25～30

[0108] Mainly for the proportion of raw materials for the preparation of gypsum slag cement and anti-corrosion primer A component, the use ratio of A component and B component (ie m A :m B ;m A is the mass of component A; m B is the quality of component B), and the proportion of each component in the fireproof coating is changed.

[0109] A method for preparing a fire-resistant, anti-corrosion, and heat-insulating integrated coating for a thick steel structure. The preparation process is as follows:

[0110] 1. Preparation of gypsum slag cement:

[0111] Preparation of gypsum slag cement:

[0112] a. Gypsum slag cement is prepared according to Table 6:

[0113] Table 6: Raw material components and mass percentages of gypsum slag cement Example formula:

[0114]

[0115]

[0116] b. Preparation process: Grind blast furnace slag, gypsum and Portland cement clinker together or separately and then mix them; pack them for use.

[0117] 2. Preparation of fire-resistant ...

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Abstract

The invention discloses a preparation method of a gypsum mine slag cement-based thick-type steel structure fireproof, anticorrosive, thermal-insulation integrated coating. According to the preparation method, gypsum mine slag cement is obtained via mixing of gypsum, blast furnace slag, and Portland cement clinker; an ingredient A is obtained via mixing of acrylic acid waterproof elastic emulsion, styrene-acrylic emulsion, vinyl chloride-vinylidene chloride copolymer emulsion, mica powder, titanium dioxide powder, iron red powder, ammoniacal liquor, hydroxyethyl cellulose ether, a dispersant, an antifoaming agent, an antiseptic, a film forming auxiliary agent, and water; a fireproof steel structure anticorrosive primer is composed of the ingredient A and the gypsum mine slag cement; a thick-type steel structure fireproof thermal-insulation coating is obtained via mixing of expanded vermiculite, expanded perlite, rubber powder, hydroxyethyl cellulose ether, and the gypsum mine slag cement; and a finished product is obtained via steel structure surface cleaning treatment, coating of the fireproof steel structure anticorrosive primer, polishing, and coating of the thick-type steel structure fireproof thermal-insulation coating. The comprehensive cost is low; the preparation method is friendly to the environment, can be widely used for fire protection, corrosion protection, thermal insulation, and energy reduction of different kinds of steel structures.

Description

technical field [0001] The invention belongs to the preparation of a fireproof, anticorrosion and heat preservation integrated coating, and relates to a preparation method of a gypsum slag cement-based thick steel structure fireproof, anticorrosion and heat preservation integrated coating. The coating prepared by the present invention integrates fire prevention, anticorrosion and heat preservation. It not only has excellent fire resistance and heat insulation performance, but also has anticorrosion and antirust functions, heat preservation and energy saving, and is environmentally friendly and low in overall cost. It can be widely used in various Fire protection, anti-corrosion, heat preservation and energy saving of steel structure. Background technique [0002] As the main form of modern architecture, steel structure has the characteristics of light weight, high strength, good seismic performance, short construction period, high degree of industrialization of construction,...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D125/14C09D127/06C09D5/18C09D5/08C09D7/12C09D1/00C09D1/08C09D5/03B05D7/14B05D5/00B05D7/00
CPCB05D5/00B05D7/00B05D7/14C08L2201/02C08L2205/035C09D1/00C09D1/08C09D5/033C09D5/08C09D5/18C09D7/61C09D7/65C09D125/14C09D127/06C09D133/00C08L25/14C08L27/06C08L1/284C08K3/34C08K2003/2241C08K2003/2272C08L33/00Y02P20/10
Inventor 邓跃全郑蓉曲瑞雪田晗旭汪彬彬李光华李霞郭李琴任大春
Owner SOUTHWEAT UNIV OF SCI & TECH
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