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Fireproof type gypsum-based spraying material and preparation method thereof

A spraying material, gypsum-based technology, applied in the field of building materials, can solve the problems of corrosion of steel bars, damage of light steel building structures, etc., and achieve the effects of preventing aggregate sinking, good sag resistance, and convenient operation.

Inactive Publication Date: 2018-08-14
深圳摩盾环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the chloride ion content of gypsum mortar exceeds a certain level, it will corrode the steel bars in contact with the light steel structure and cause certain damage to the light steel building structure

Method used

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  • Fireproof type gypsum-based spraying material and preparation method thereof
  • Fireproof type gypsum-based spraying material and preparation method thereof

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preparation example Construction

[0039] In some embodiments, the preparation method of the fireproof gypsum-based spraying material includes the following preparation steps:

[0040] (1) Put the modified cellulose ether, thixotropic lubricant, perlite, composite retarder, flame retardant, chloride ion control agent into the pulverizer for grinding, the speed of the pulverizer is 110-150r / min, The grinding time is 3-5 hours, and the particle size reaches 0.6-1.0 mm to obtain additives;

[0041] (2) Mix gypsum, sand, Portland cement and additives evenly to obtain dry-mixed mortar;

[0042] (3) Before using the spraying material, add water to the dry-mixed mortar, and the amount of water added to control the consistency at 80-100mm, that is to say.

[0043] In some embodiments, the amount of water added is 35% for the standard diffusion degree when the sprayed material is used as the surface plaster, and 60% for the standard diffusion degree when the sprayed material is used as the bottom plaster.

Embodiment 1

[0045] A fireproof gypsum-based spraying material, prepared from the following raw materials in parts by weight: 700g gypsum, 20g Portland cement, 80g sand, 60g perlite, 1g modified cellulose ether, 3g thixotropic lubricant, composite retarder 0.6g coagulant, 0.4g flame retardant, 0.3g chloride ion control agent.

[0046] The gypsum is desulfurized gypsum.

[0047] The Portland cement has a strength grade of 42.5R; the sand is ordinary river sand, which is screened through a 100-mesh sieve.

[0048] The perlite is vitrified microbeads; wherein, the vitrified microbeads have a particle size of 100 mesh, a thermal conductivity of 0.032w / m.k, and a refractoriness of 1000°C.

[0049] The modified cellulose ether is hydroxypropyl methylcellulose; the viscosity of the modified cellulose ether is 6000mPa.s.

[0050] The thixotropic lubricant is a mixture of modified magnesium aluminum silicate and montmorillonite, wherein the modified magnesium aluminum silicate accounts for 55%, a...

Embodiment 2

[0059] A fireproof gypsum-based spraying material, prepared from the following raw materials in parts by weight: 800g of gypsum, 25g of Portland cement, 100g of sand, 75g of perlite, 2g of modified cellulose ether, 5g of thixotropic lubricant, and compound retarder 0.8g coagulant, 0.5g flame retardant, 0.5g chloride ion control agent.

[0060] The gypsum is a mixture of desulfurized gypsum and phosphogypsum with the same quality.

[0061] The Portland cement has a strength grade of 42.5R; the sand is ordinary river sand, which is screened through a 110-mesh sieve.

[0062] The perlite is vitrified microbeads; wherein, the vitrified microbeads have a particle size of 200 mesh, a thermal conductivity of 0.045w / m.k, and a refractoriness of 1200°C.

[0063] The modified cellulose ether is a mixture of hydroxypropyl methylcellulose and hydroxyethyl methylcellulose of equal mass; wherein the viscosity of the modified cellulose ether is 8000mPa.s.

[0064] The thixotropic lubricant...

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Abstract

The invention relates to the technical field of building materials and in particular relates to a fireproof type gypsum-based spraying material and a preparation method thereof. The fireproof type gypsum-based spraying material is prepared by grinding modified cellulose ether, a thixotropic lubricant, pearlite, a composite retarder, a flame retardant and a chlorine ion controlling agent until thegranularity is 0.6 to 1.0mm, and mixing powder with gypsum, sand and portland cement, so that the fireproof type gypsum-based spraying material provided by the invention has characteristics of convenience for working, water prevention and heat insulation, high temperature resistance, no hollowing, no cracking, strong binding power, good anti-sagging performance, bug and ant biting resistance, metal rusting prevention, greenness and environment protection and the like; furthermore, the flame retardant has the effect of keeping the average breaking strength of the gypsum-based spraying materialbeing 2.2MPa or more and the average compressive strength being 4.6MPa or more through a reasonable design and a dosage test of magnesium hydroxide, zinc borate and chitosan tetramethylene phosphine sulfate; the fireproof type gypsum-based spraying material keeps relatively good mechanical strength and also has the fireproof effect with the average fireproof degree of 560 DEG C or more.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a fireproof gypsum-based spraying material and a preparation method thereof. Background technique [0002] As we all know, with the rapid development of the economy, the world's demand for energy is also increasing. In the increasing total energy consumption, building energy consumption is particularly large, accounting for about 11-25% of the total energy consumption. A large amount of data And experiments have shown that the fastest and most effective way is to use thermal insulation and energy-saving materials. Now at home and abroad, there are many types of insulation materials. According to the classification of materials, thermal insulation materials can be divided into three categories: metal thermal insulation materials, organic thermal insulation materials, and inorganic thermal insulation materials. Metal insulation materials, but the supply of this materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/28C04B111/20
CPCC04B28/14C04B2111/20C04B2111/28C04B2201/32C04B7/02C04B14/068C04B14/18C04B14/22C04B24/383C04B2103/22C04B2103/63C04B22/08C04B22/064C04B24/12C04B22/10
Inventor 冯有愉周勤冯婷冯永森
Owner 深圳摩盾环保新材料有限公司
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