CN103448132B - A kind of flame retardant type concrete composite wallboard and preparation method thereof - Google Patents

Abstract

A kind of flame retardant type concrete composite wallboard, it is that upper layer material, lower layered material, core material are mixed, the concrete composite wallboard waterproof of present invention production, sound insulation, good heat preservation performance, intensity is high, the particulate adjunct added in core material has certain intensity and robustness, it is filled between quick hardening sulphoaluminate cement and flyash, serves cracking resistance, resistance to deformation, the effect such as impervious, enhance the overall performance of concrete composite wallboard.Aluminium hydroxide in upper strata, lower plywood has good fire retardation, it is adaptable to public place uses.

Description

A kind of flame-retardant concrete composite wallboard and preparation method thereof

technical field

The invention mainly relates to a concrete composite wallboard, in particular to a flame-retardant concrete composite wallboard and a preparation method thereof.

Background technique

With the development of the national economy and the improvement of material living standards, people have higher and higher requirements for living conditions and the use and function of building buildings. Traditional wallboards that use clay as the main raw Land and coal are gradually being phased out. They are replaced by new wall materials, which are favored by people because of their light weight, environmental protection, energy saving, heat preservation, fire resistance, and sound insulation.

Contents of the invention

The object of the present invention is to provide a flame-retardant concrete composite wallboard and a preparation method thereof.

The present invention is achieved through the following technical solutions:

A flame-retardant concrete composite wallboard is characterized in that it is made by mixing an upper layer material, a lower layer material and a core material, and the upper layer material is composed of the following raw materials in parts by weight:

Rapid hardening sulfoaluminate cement 85-90, fine sand 20-30, aluminum hydroxide powder 10-12, vinylon fiber 2-3, polyester fiber 1-2, polypropylene fiber 1-2, water 70-80;

The lower layer material is composed of the following raw materials in parts by weight:

Rapid hardening sulfoaluminate cement 70-80, coal gangue 25-30, lapis lazuli powder 4-6, polytetrafluoroethylene fiber 5-6, aluminum hydroxide powder 8-10, calcium stearate 1-2, water 70-80;

Described core material is made up of the raw material of following weight part:

Rapid hardening sulfoaluminate cement 50-60, fly ash 50-60, alum powder 2-3, hydrotalcite powder 1-2, antimony trioxide 1-2, sodium hexametaphosphate 1-2, stearic acid 1-2, polyethylene glycol 40003-5, styrene-acrylic emulsion 3-5, hexamethylphosphoric triamide 1-2, sodium persulfate 0.1-0.2, vinyl tris(β-methoxyethoxy) Silane 0.3-0.4, sodium dodecyl sulfonate 0.2-0.3, glycerin 2-4, ethylene glycol tert-butyl ether 0.1-0.2, water 70-80.

A method for preparing a flame-retardant concrete composite wallboard, comprising the following steps:

Mix and stir the above lower layer material, put it into the mold, add a layer of glass fiber mesh cloth, after the lower layer material is initially set, mix the alum powder and hydrotalcite powder in the core material, add sodium hexametaphosphate, hard Fatty acid, polyethylene glycol 4000, stirred and reacted at 90-100°C for 1-2 hours, cooled to room temperature, added sodium persulfate, vinyl tris(β-methoxyethoxy)silane, glycerin, 1000- Disperse at 1500 rpm for 3-5 minutes, ball mill and dry and granulate, mix with the remaining raw materials in the core material, stir evenly, add to the first layer of glass fiber mesh cloth, the particle size is 2-3μm, After 25-35 minutes, spread another layer of glass fiber mesh cloth, mix and stir the above-mentioned upper layer materials evenly, add them, smooth and finish, remove the mold after 3-4 hours of natural curing, and get the result after 7-8 days of curing The flame-retardant concrete composite wallboard is described.

The advantages of the present invention are:

The concrete composite wallboard produced by the invention has good waterproof, sound insulation, thermal insulation, and high strength. The particle additive added in the core material has certain strength and firmness, and is filled between the rapid hardening sulfoaluminate cement and fly ash. It has the functions of anti-cracking, anti-deformation, anti-seepage, etc., and enhances the overall performance of concrete composite wall panels.

The aluminum hydroxide in the upper and lower boards has a good flame retardant effect and is suitable for use in public places.

detailed description

Example 1

A flame-retardant concrete composite wallboard is characterized in that it is made by mixing an upper layer material, a lower layer material, and a core material, and the upper layer material is composed of the following raw materials in parts by weight (kg):

Rapid hardening sulfoaluminate cement 90, fine sand 30, aluminum hydroxide powder 12, vinylon fiber 3, polyester fiber 2, polypropylene fiber 2, water 80;

The lower layer material is composed of the following raw materials in parts by weight:

Rapid hardening sulfoaluminate cement 80, coal gangue 30, lapis lazuli powder 6, polytetrafluoroethylene fiber 6, aluminum hydroxide powder 10, calcium stearate 2, water 70-80;

Described core material is made up of the raw material of following weight part:

Rapid hardening sulfoaluminate cement 60, fly ash 60, alum powder 2, hydrotalcite powder 1, antimony trioxide 2, 3, sodium hexametaphosphate 1, stearic acid 2, polyethylene glycol 40005, styrene-acrylic Emulsion 3, hexamethylphosphoric triamide 2, sodium persulfate 0.2, vinyl tris(β-methoxyethoxy) silane 0.4, sodium dodecylsulfonate 0.3, glycerin 4, ethylene glycol tert-butyl Base ether 0.2, water 80.

A method for preparing a flame-retardant concrete composite wallboard, comprising the following steps:

Mix and stir the above lower layer material, put it into the mold, add a layer of glass fiber mesh cloth, after the lower layer material is initially set, mix the alum powder and hydrotalcite powder in the core material, add sodium hexametaphosphate, hard Fatty acid, polyethylene glycol 4000, stirred and reacted at 100°C for 2 hours, cooled to room temperature, added sodium persulfate, vinyl tris(β-methoxyethoxy)silane, glycerin, and dispersed at 1500 rpm for 3 Minutes, granulate after ball milling and drying, mix with the remaining raw materials in the core material, stir evenly, add the first layer of glass fiber mesh cloth, the particle size is 3μm, and after 35 minutes, spread a layer of glass fiber mesh For fiber mesh cloth, mix and stir the above-mentioned upper layer materials evenly before adding, smoothing and finishing, demoulding after natural curing for 4 hours, and curing for 8 days to obtain the flame-retardant concrete composite wallboard.

Performance Testing:

Density, kg/m ³ : 326;

Strength, MPa: average strength 2.0, minimum strength 1.6;

Frost resistance%: mass loss rate 2.8, strength loss rate 10;

Impact strength: 30Kg standard sandbag impact 5 times without through cracks;

Water absorption: 5%;

Single-point hanging force N: Apply a load of 1000N to the hanging piece, let it stand for 24 hours, and there is no crack on the board surface around the hanging area.

Claims (2)

1. A flame-retardant concrete composite wallboard is characterized in that it is made by mixing an upper layer material, a lower layer material, and a core material, and the upper layer material is composed of the following raw materials in parts by weight: quick-hardening sulfoaluminate Cement 85-90, fine sand 20-30, aluminum hydroxide powder 10-12, vinylon fiber 2-3, polyester fiber 1-2, polypropylene fiber 1-2, water 70-80; Said raw materials in parts by weight: 70-80 quick-hardening sulfoaluminate cement, 25-30 coal gangue, 4-6 lapis lazuli powder, 5-6 polytetrafluoroethylene fiber, 8-10 aluminum hydroxide powder, hard Calcium fatty acid 1-2, water 70-80; the core material is composed of the following raw materials in parts by weight: rapid hardening sulfoaluminate cement 50-60, fly ash 50-60, alum powder 2- 3. Hydrotalcite powder 1-2, antimony trioxide 1-2, sodium hexametaphosphate 1-2, stearic acid 1-2, polyethylene glycol 40003-5, styrene-acrylic emulsion 3-5, hexamethyl Phosphoric triamide 1-2, sodium persulfate 0.1-0.2, vinyl tris (β-methoxyethoxy) silane 0.3-0.4, sodium dodecylsulfonate 0.2-0.3, glycerin 2-4, ethyl Diol tert-butyl ether 0.1-0.2, water 70-80. 2. A kind of flame-retardant concrete composite wallboard according to claim 1, characterized in that the preparation method comprises the following steps: mixing and stirring the above-mentioned lower layer material, putting it into the mold, adding a layer of glass fiber mesh cloth, After the initial setting of the lower layer material, mix the alum powder in the core material with water and talcum powder, add sodium hexametaphosphate, stearic acid, polyethylene glycol 4000, and stir and react at 90-100°C for 1-2 hours , cooled to normal temperature, adding sodium persulfate, vinyl tris (β-methoxyethoxy) silane, glycerin, dispersing for 3-5 minutes at 1000-1500 rpm, granulating after ball milling and drying, and mixing with the core material Mix the remaining raw materials, stir evenly, add the first layer of glass fiber mesh cloth, the particle size is 2-3μm, after 25-35 minutes, spread another layer of glass fiber mesh cloth, and mix and stir the above-mentioned upper layer materials After evenly adding, smoothing and finishing, demoulding after natural curing for 3-4 hours, and curing for 7-8 days to obtain the flame-retardant concrete composite wallboard.