Method for preparing industrial sodium silicate adhesive

An adhesive and sodium silicate technology, applied in silicates, adhesives, adhesive additives, etc., can solve problems such as the influence of water glass strength, and achieve improved adhesive effect, water resistance, convenient storage and use. Effect

Inactive Publication Date: 2017-08-25
ANHUI LONGQUAN SILICON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of water glass itself, the performance of batch mater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: A kind of method for preparing industrial sodium silicate adhesive comprises the following steps:

[0033] 1) Add solid sodium hydroxide and silicon micropowder into the electric melting furnace according to the weight ratio of 2.5-3:1. The temperature rise curve is raised to 200°C at 8-10°C / min, and then to 320°C at 4-6°C / min. -350°C, melt the solid sodium hydroxide after heating, then continue to heat up to 400-450°C at 4-6°C / min, stop heating until the silicon micropowder reacts completely, and then obtain sodium orthosilicate Crude;

[0034] 2) Raise the ambient temperature of the crude sodium orthosilicate to 100°C-140°C and keep it warm for 0.5-1 hour; raise the temperature to 190°C-210°C and keep it warm for 1-2 hours; ℃, heat preservation for 1.8 to 2.5 hours; then cool the crude sodium orthosilicate to below 40 ℃, so that the crude sodium orthosilicate solidifies completely, and obtains solid sodium silicate;

[0035] 3) Dissolve the solid sodiu...

Embodiment 2

[0047] Embodiment 2: A kind of method for preparing industrial sodium silicate adhesive comprises the following steps:

[0048] 1) Add solid sodium hydroxide and silicon micropowder into the electric melting furnace according to the weight ratio of 2.5-3:1. The temperature rise curve is raised to 200°C at 8-10°C / min, and then to 320°C at 4-6°C / min. -350°C, melt the solid sodium hydroxide after heating, then continue to heat up to 400-450°C at 4-6°C / min, stop heating until the silicon micropowder reacts completely, and then obtain sodium orthosilicate Crude;

[0049] 2) Raise the ambient temperature of the crude sodium orthosilicate to 100°C-140°C and keep it warm for 0.5-1 hour; raise the temperature to 190°C-210°C and keep it warm for 1-2 hours; ℃, heat preservation for 1.8 to 2.5 hours; then cool the crude sodium orthosilicate to below 40 ℃, so that the crude sodium orthosilicate solidifies completely, and obtains solid sodium silicate;

[0050] 3) Dissolve the solid sodiu...

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PUM

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Abstract

The invention discloses a method for preparing an industrial sodium silicate adhesive. The method comprises the following steps of firstly preparing a sodium orthosilicate crude product, preparing solid sodium silicate, dissolving the solid sodium silicate into a special mixed solution of an adhesive and water, and then filtering to obtain a sodium silicate solution; adding sodium hydrogen sulfite to the sodium silicate solution to generate precipitated light silicon dioxide and a sodium sulfite solution, and filtering the generated mixture; concentrating and drying the other part of filtrate to obtain high-quality industrial sodium silicate; and mixing the prepared high-quality industrial sodium silicate and 2-fold resin emulsion, adding the mixed solution to silica sand, and fully mixing to obtain the sodium silicate adhesive. Main ingredients of the sodium silicate after being hardened are a silicon gel and a solid, the specific surface area is large, and the adhesive property is greatly improved. The sodium silicate is treated by using the special mixed solution of the adhesive and water with moderate concentration, so that the water resistance is improved, and the sodium silicate adhesive is very convenient to transport, store and use, and is especially suitable for mechanized and automated operation.

Description

[0001] Technical field: [0002] The invention relates to the field of chemical industry, in particular to a method for preparing industrial sodium silicate adhesive. [0003] Background technique: [0004] Sodium silicate, commonly known as sodium silicate, is a water-soluble silicate, and its aqueous solution is commonly known as water glass, which is a mineral binder. Its chemical formula is R2O·nSiO2, where R2O is an alkali metal oxide, and n is the ratio of silicon dioxide to the number of moles of alkali metal oxide, which is called the molar number of water glass. Water glass commonly used in construction is an aqueous solution of sodium silicate (Na2O nSiO2). [0005] The use of water glass is very extensive, almost throughout all sectors of the national economy. In the chemical system, it is used to manufacture various silicate products such as silica gel, white carbon black, zeolite molecular sieve, sodium metasilicate pentahydrate, silica sol, layer silicon and ins...

Claims

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Application Information

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IPC IPC(8): C09J1/02C09J11/08C09J11/04C09J11/06C01B33/32
CPCY02P20/129C09J1/02C01B33/32C08K3/36C08K5/50C08K13/02C08K2003/2206C08K2003/262C08L3/06C08L29/04C08L83/04C09J11/04C09J11/06C09J11/08
Inventor 赵生护赵生保
Owner ANHUI LONGQUAN SILICON MATERIAL
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