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Preparation method for thermal insulation type gypsum board

A gypsum board and thermal insulation technology, which is applied in the field of building materials, can solve problems such as poor water resistance, low compressive strength, and low softening coefficient, and achieve the effects of prolonging retarding time, high foam brittleness, and improving stability

Inactive Publication Date: 2018-06-12
常州鼎众冷暖设备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of thermal insulation gypsum board for the current problems of gypsum board material such as flexural resistance, low compressive strength, poor water resistance and low softening coefficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of thermal insulation type gypsum board, comprising the steps of:

[0026] (1) Take paraffin wax and add hexadecyltrimethylammonium bromide and distilled water according to the mass ratio of 1~3:15:50, mix it with distilled water, heat it at 70~75℃, shear it at high speed for 10~15min, and let it stand for 2 minutes Then cut for 2~5min, cool down to room temperature, ultrasonic for 25~30min to obtain ultrasonic emulsification, take sodium silicate and add it to distilled water and hydrochloric acid solution at a mass ratio of 1:25:10, heat and stir at 70~75℃ for 10~ After 15 minutes, add ultrasonic emulsification according to the mass ratio of 2:5, adjust the pH value to 8~9 with 0.5mol / L hydrochloric acid solution, keep at 65~70℃ for 2~3 hours, filter with suction, take the solid precipitate, and wash with distilled water Precipitate the solid for 2 to 4 times, dry to obtain phosphogypsum additive A, and set aside;

[0027] (2) Take the waste oxyt...

Embodiment 1

[0031]Oxytetracycline waste residue: It is obtained from the waste residue produced by North China Pharmaceutical Co., Ltd. after extracting the fermentation broth in the production process of penicillin.

[0032] Activated sludge: taken from a sewage treatment plant in Qingpu District, Shanghai, which mainly uses traditional A 2 O process, sludge digestion adopts aerobic digestion, and the hydraulic retention time of aerobic digestion is 10-20 days.

[0033] A preparation method of thermal insulation type gypsum board, comprising the steps of:

[0034] (1) Take paraffin wax and add hexadecyltrimethylammonium bromide and distilled water according to the mass ratio of 1:15:50, mix it with distilled water, heat at 70~75°C, shear at high speed for 10 minutes, and then cut after standing for 2 minutes 2min, cool down to room temperature, and ultrasonicate for 25min to obtain ultrasonic emulsification, take sodium silicate and add it to distilled water and hydrochloric acid soluti...

Embodiment 2

[0039] Oxytetracycline waste residue: It is obtained from the waste residue produced by North China Pharmaceutical Co., Ltd. after extracting the fermentation broth in the production process of penicillin.

[0040] Activated sludge: taken from a sewage treatment plant in Qingpu District, Shanghai, which mainly uses traditional A 2 O process, sludge digestion adopts aerobic digestion, and the hydraulic retention time of aerobic digestion is 10-20 days.

[0041] A preparation method of thermal insulation type gypsum board, comprising the steps of:

[0042] (1) Take paraffin wax and add hexadecyltrimethylammonium bromide and distilled water according to the mass ratio of 2:15:50 to mix, heat at 70~75°C, shear at high speed for 12 minutes, and then shear after standing for 2 minutes 3min, cool down to room temperature, and ultrasonicate for 27min to obtain ultrasonic emulsification, take sodium silicate and add it to distilled water and hydrochloric acid solution at a mass ratio ...

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Abstract

The invention relates to a material for buildings, and in particular to a preparation method for a thermal insulation type gypsum board. The preparation method utilizes fermented oxytetracycline fungus residue as a raw material to prepare an additive for the preparation process of phosphogypsum. Fermentation is firstly carried out, the cooperation between microwave heating and basic hydrolysis isthen utilized, so that the hydrolysis reaction of the fungus residue is intensified, consequently, the time of hydrolysis is greatly shortened, and the efficiency of the hydrolysis reaction is effectively improved. Fungus residue protein belongs to single-cell protein, and the molecular weight is lower. The content of free amino acid in a set retarder is higher, a small amount of small peptide substance is also contained, main chelating functional groups which are produced by the set retarder and calcium ions are the amino group and the carboxyl group, calcium chelate colloid can be adsorbed onto the surfaces of gypsum crystal nucleus, consequently, the axial growth of the crystal nucleus is inhibited, the morphology of gypsum is changed, the crystallization speed of the gypsum is retarded, and thereby the time of gypsum setting retardation is prolonged.

Description

technical field [0001] The invention relates to a building material, in particular to a method for preparing a thermal insulation gypsum board. Background technique [0002] Gypsum boards are widely used as building materials for interior decoration. Gypsum board is a board-shaped object whose core part (gypsum core) mainly made of gypsum is covered with a base paper for gypsum board. [0003] The decorative gypsum board produced with gypsum as the raw material currently adopts the pre-mixed casting method in China. Although the ratio of water to plaster is different, the bulk density of the product generally reaches 1-1.2g / cm 3 , and poor water resistance. Due to the large volume of the product, it not only increases the consumption of raw materials and manpower, but also increases the self-weight of the building, which affects the life of the building to a certain extent. Foreign lightweight decorative gypsum boards are generally manufactured by foaming or adding li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B20/10C04B38/10C04B20/02
CPCC04B20/023C04B20/1066C04B28/14C04B38/10C04B2201/32C04B2201/50C04B24/42C04B24/2688C04B22/002C04B24/36C04B24/001C04B24/14C04B24/122C04B24/20C04B24/16C04B18/0418
Inventor 许斌郑薇林凡
Owner 常州鼎众冷暖设备工程有限公司
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