Method for preparing compound modified waterproof agents for gypsum

A technology of composite modification and waterproofing agent, which is applied in the field of preparation of composite modified gypsum waterproofing agent, can solve the problems of water resistance, poor weather resistance, complex synthesis process, unfavorable gypsum strength, etc., to enhance water resistance, improve softening coefficient, The effect of short curing time

Inactive Publication Date: 2016-12-07
仇颖莹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: Aiming at the problems that the existing gypsum waterproofing agent is added in a large amount during use, which will have an adverse effect on the strength of gypsum, and the synthesis process is complicated, the curing time is long, and the water resistance and weather resistance are poor. A preparation method of a composite modified gypsum water repellant, which comprises mixing and stirring oily sludge, yeast extract, peptone, agar, ammonium sulfate solution, potassium dihydrogen phosphate, dipotassium hydrogen phosphate and manganese sulfate to form a nutrient mixture reaction, the fermented product was prepared for fermentation, and the surface hyphae were collected and mixed with glucose solution and colchicine to obtain a microbial modification liquid, and then sodium methyl silicate, deionized water, polyoxyethylene abietic acid, glycerin , polyvinyl alcohol and potassium persulfate were put into a reactor protected by nitrogen to stir and react, and then the gas in the reactor was replaced by silicon fluoride. The compound modified gypsum waterproofing agent can be obtained after ultrasonic vibration, sterilization and disinfection. The dosage of the present invention is small during use, which will not affect the strength of gypsum, and the process is simple, the curing time is short, and the water repellency , Strong weather resistance, adapt to the needs of industrial production

Method used

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Examples

Experimental program
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Effect test

example 1

[0018] First, in parts by weight, take 30 parts of yeast extract, 18 parts of peptone, 12 parts of agar, 4 parts of 2.4mol / L ammonium sulfate solution, 1.0 part of potassium dihydrogen phosphate, 0.8 part of dipotassium hydrogen phosphate and 0.3 part of manganese sulfate , stir evenly to obtain nutrients, according to the mass ratio of 1:1, take nutrients and oily sludge with a water content of 50%, stir evenly, to obtain fermented matter; then place the above fermented matter in the fermentation tank, set the temperature to 30 ℃, ferment for 3 days, every 3h, collect the mycelia on the surface of the fermented product, after the fermentation is over, combine the collected mycelium, and mix the collected mycelium with a mass fraction of 6% glucose solution according to the mass ratio of 1:26 , then add 0.2-0.3% colchicine of mycelia mass, stir evenly, and let it stand for 20 minutes to obtain a microbial modification solution, which is set aside; Sodium, 1 part of polyoxyethy...

example 2

[0021]First in parts by weight, get 35 parts of yeast extract, 21 parts of peptone, 13 parts of agar, 5 parts of 2.4mol / L ammonium sulfate solution, 1.1 part of potassium dihydrogen phosphate, 0.9 part of dipotassium hydrogen phosphate and 0.4 part of manganese sulfate , stir evenly to obtain nutrients, according to the mass ratio of 1:1.5, take nutrients and oily sludge with a water content of 50%, stir evenly, to obtain fermented matter; then place the above fermented matter in the fermentation tank, set the temperature at 3 ℃, ferment for 3.5 days, every 3.5h, collect the mycelia on the surface of the fermented product, after the fermentation is over, combine the collected mycelium, and mix the collected mycelium with a mass fraction of 6% glucose solution at a mass ratio of 1:27 Evenly, then add 0.25% colchicine of mycelia quality, stir evenly, let it stand for 23min, get microbial modification liquid, set aside; then count 14 parts by weight of polyvinyl alcohol, 34 parts ...

example 3

[0024] First in parts by weight, get 40 parts of yeast extract, 24 parts of peptone, 14 parts of agar, 6 parts of 2.4mol / L ammonium sulfate solution, 1.2 parts of potassium dihydrogen phosphate, 1.0 part of dipotassium hydrogen phosphate and 0.5 part of manganese sulfate , stir evenly to obtain nutrients, according to the mass ratio of 1:2, take nutrients and oily sludge with a moisture content of 50%, stir evenly, to obtain fermented matter; then place the above fermented matter in the fermentation tank, set the temperature at 35 ℃, ferment for 4 days, every 4 hours, collect the mycelia on the surface of the fermented product, after the fermentation is over, combine the collected mycelium, and mix the collected mycelium with a mass fraction of 6% glucose solution according to the mass ratio of 1:28 , then add 0.3% colchicine of mycelia mass, stir evenly, and let stand for 25min to obtain microbial modified liquid, which is for subsequent use; then in parts by weight, get 16 pa...

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Abstract

The invention discloses a method for preparing compound modified waterproof agents for gypsum, and belongs to the field of technologies for preparing waterproof agents. The method includes mixing and stirring oily sludge, yeast extract, peptone, agar, ammonium sulfate solution, monopotassium phosphate, dipotassium phosphate and manganese sulfate to obtain nutrients and carrying out reaction on the nutrients to obtain fermentation materials; fermenting the fermentation materials; collecting surface hyphae and uniformly mixing the hyphae, glucose solution and colchicines with one another to obtain microorganism modification liquid; carrying out stirring reaction on methyl silicic acid sodium alcoholate, deionized water, polyoxyethylene rosin ester, glycerin, polyvinyl alcohol and potassium persulfate in a reaction kettle under the protection of nitrogen; replacing gas in the reaction kettle by silicon fluoride; collecting reacted discharged materials; uniformly mixing the discharged materials and the microorganism modification liquid with one another to obtain mixtures; carrying out ultrasonic oscillation, sterilization and disinfection on the mixtures to obtain the compound modified waterproof agents for the gypsum. The method has the advantages that the compound modified waterproof agents are low in mixing amount, free of influence on the strength of the gypsum, short in solidification time, high in waterproof performance and weather resistance and adaptive to industrial production requirements.

Description

technical field [0001] The invention discloses a preparation method of a composite modified gypsum waterproofing agent, belonging to the technical field of waterproofing agent preparation. Background technique [0002] Gypsum is a kind of abundant resource, which is an air-hardening material. Gypsum products have good fireproof and sound insulation properties, and have a wide range of raw materials, low energy consumption for material production, good process performance, and good thermal insulation and humidity control effects. As wall materials, it is widely used in the construction industry. However, due to the poor waterproofness of gypsum products, the strength loss after water absorption can reach 70%, and its development and use are greatly restricted in modern times. subject of attention. [0003] At present, in order to solve the problems of poor water resistance such as low strength and easy warping and deformation of gypsum products after being exposed to moistur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B28/14C04B103/65
CPCC04B40/0039C04B28/14C04B2103/65C04B2111/20C04B2111/27C04B24/2623C04B24/42C04B24/283C04B24/02C04B22/002C04B22/14C04B22/126C04B2103/0001C04B20/0048C04B2103/22
Inventor 仇颖莹薛蕾高玉刚
Owner 仇颖莹
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