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Composition for building material and product thereof

A technology for building materials and compositions, applied in the field of building additives, can solve the problems of poor compressive performance, unsatisfactory, high temperature resistance, poor low temperature performance, etc., achieves good thermal insulation performance, does not reduce compressive strength, and improves high temperature resistance. and the effect of low temperature resistance

Active Publication Date: 2020-12-15
谢国林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional thermal insulation materials only have a single thermal resistance performance, and do not have the function of energy storage and temperature adjustment
Moreover, the compressive performance is poor and the flame retardant effect is low, resulting in poor strength and fire resistance, which cannot meet people's requirements for new building materials
[0004] The hydration reaction of magnesium oxide and magnesium chloride is used to form wall building materials, which are sensitive to water, resulting in poor water resistance of the material; due to the hydration reaction of magnesium oxide and magnesium chloride, the wall building materials contain structural water, and its high temperature resistance , Low temperature performance is poor, it is difficult to achieve a balance between water resistance and mechanical strength, and in the process of preparing actual wall materials, the mechanical performance maintenance also needs to be improved

Method used

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  • Composition for building material and product thereof
  • Composition for building material and product thereof
  • Composition for building material and product thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0074] In one embodiment, the preparation method of described phosphoric acid ester compound modified guar gum, comprises the steps:

[0075] (1) Add epichlorohydrin to a buffer solution with a pH value of 4.5-5.5, heat up to 80-85°C for 4 hours, add absolute ethanol, extract, and separate to obtain an intermediate;

[0076] (2) Wet the guar collagen powder with isopropanol, basify the reaction with NaOH aqueous solution for 30 minutes, then add the intermediate described in step (1) dropwise, heat up to 100°C, react for 0.5h, add cationic etherification agent, Continue the etherification reaction with NaOH for 3 hours, lower the temperature, adjust the pH to 7, filter with suction, wash, and dry to obtain the phosphate compound-modified guar gum;

[0077] The buffer is a mixture of sodium dihydrogen phosphate and disodium hydrogen phosphate;

[0078] The solid content of the intermediate is 67%, and the viscosity is 100mPa·s; the addition amount of the epichlorohydrin is joi...

Embodiment 1

[0097] Embodiment 1 provides a kind of composition for building materials, and described composition for building materials comprises component A, component B, component C, component D;

[0098] The component A includes lightly burned magnesium powder; in parts by weight, the lightly burned magnesium powder includes 67.5 parts of magnesium oxide, 27.5 parts of the second magnesium salt, and 5.5 parts of silicon-containing compounds; the component A is in the muffle Furnace ashing at 650°C for 4 hours, the obtained ash content is 87.5wt%; said component A is mixed with its raw materials, and then crushed, and the particle size D5 of the crushed particles is in the range of 27-35um, and D90 is in the range of 80-90um;

[0099] The second magnesium salt includes acidic magnesium salt and basic magnesium salt; the mass ratio of the acidic magnesium salt and the basic magnesium salt is 2.7:1; the acidic magnesium salt is a mixture of magnesium carbonate and calcium magnesium carbonate...

Embodiment 2

[0112] Embodiment 2 provides a kind of building material composition, with embodiment 1, difference is:

[0113] In parts by weight, the light-burned magnesium powder includes 62 parts of magnesium oxide, 25 parts of the second magnesium salt, and 4 parts of silicon-containing compounds;

[0114] The weight ratio of component C to component B is 1:0.2; the ratio of the total mass of component C and component B to the mass of component A is 50:105.

[0115] The building material and its preparation method are the same as in Example 1, except that it contains the building material composition described in Example 2.

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Abstract

The invention belongs to the technical field of building additives, and particularly relates to a composition for a building material and a product thereof. The composition for the building material comprises a component A, a component B and a component C, wherein the component A comprises caustic-burned magnesia powder; the caustic-burned magnesia powder comprises the following components in parts by weight: 62-71 parts of magnesium oxide, 25-32 parts of second magnesium salt and 4-8 parts of silicon-containing compound. The composition for the building material can be used for straws, compressive strength and breaking strength can be achieved without adding reinforcing steel bars and cement, in the condition of relatively high humidity, no expansion, no reduction of compressive strength,good thermal insulation performance, improvement of high-temperature resistance and low-temperature resistance, no cracking after being placed at 700 DEG C for 2 hours and no cracking after being placed at -20 DEG C for 5 hours can be achieved.

Description

technical field [0001] The invention belongs to the technical field of building additives, and more specifically, the invention relates to a composition for building materials and products thereof. Background technique [0002] At present, the state is vigorously promoting the use of new technologies, new processes, new materials and new equipment for civil building energy conservation. All countries in the world focus on the innovation of building materials when developing building energy conservation. As early as the 1960s, some developed countries began to replace traditional building materials with new building materials with good thermal insulation performance and low energy consumption. In architecture, the outer envelope has the greatest heat loss and is at the same time the main part of the building's façade. Materials used in construction projects are collectively referred to as construction materials. Building materials can be divided into structural materials, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B111/34C04B111/27
CPCC04B28/32C04B2111/343C04B2111/27C04B2201/32C04B22/10C04B22/08C04B22/066C04B22/124C04B22/122C04B24/38C04B18/24
Inventor 谢国林
Owner 谢国林
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