Preparation method of high-strength damp-proof rock wool board

A rock wool board and high-strength technology, applied in the field of preparation of high-strength moisture-proof rock wool board, can solve the problems of strong water absorption, low mechanical strength, poor moisture resistance, etc., to increase the consistency and density, improve the mechanical strength, dispersion The effect of external stress

Pending Publication Date: 2020-09-29
王自浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main technical problem to be solved by the present invention is to provide a preparation method of high-strength moisture-proof rock wool board for the defects of strong water absorption, poor moisture resistance and low mechanical strength of the common rock wool board at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of pretreated cotton straw:

[0036] Weigh the cotton stalks and cut them into cotton stalk fragments with a length of 2.cm with a guillotine, put the obtained cotton stalk fragments into a stone mortar, and repeatedly crush and crush them with a stone pestle for 45 minutes. After the crushing and crushing process is completed, Obtain pretreated cotton stalks;

[0037] Preparation of concentrate:

[0038] Mix the pretreated cotton stalks obtained above with pectinase and deionized water at a mass ratio of 8:1:7 and put them into an enzymolysis tank, then put the enzymolysis tank into a constant temperature box, and heat up to 40°C , heat preservation enzymolysis treatment for 6 hours; after the above enzymolysis treatment is completed, the enzymolysis product is obtained, and the obtained enzymolysis product is moved into a vacuum concentration tank. After processing, a concentrate is obtained;

[0039] Preparation of filter residue:

[0040] The concent...

Embodiment 2

[0048] Preparation of pretreated cotton straw:

[0049] Weigh the cotton stalks and cut them into cotton stalk fragments with a length of 2.75cm with a guillotine, put the obtained cotton stalk fragments into a stone mortar, and repeatedly crush and crush them with a stone pestle for 47.5 minutes. After the crushing and crushing process, Obtain pretreated cotton stalks;

[0050] Preparation of concentrate:

[0051] Mix the pretreated cotton stalks obtained above with pectinase and deionized water at a mass ratio of 8:1:7 and put them into an enzymolysis tank, then put the enzymolysis tank into a constant temperature box, and heat up to 45°C , heat preservation enzymolysis treatment for 7h; after the above enzymolysis treatment is completed, the enzymolysis product is obtained, and the obtained enzymolysis product is moved into a vacuum concentration tank, and the pressure is 1100Pa, the temperature is 92.5°C, the vacuum concentration treatment is 35min, and the vacuum concent...

Embodiment 3

[0061] Preparation of pretreated cotton straw:

[0062] Weigh the cotton stalks and cut them into cotton stalk fragments with a length of 3.0 cm with a guillotine, put the obtained cotton stalk fragments into a stone mortar, and repeatedly crush and crush them with a stone pestle for 50 minutes. After the crushing and crushing treatment, you can get Pretreatment of cotton straw;

[0063] Preparation of concentrate:

[0064] Mix the pretreated cotton stalks obtained above with pectinase and deionized water at a mass ratio of 8:1:7 and put them into an enzymolysis tank, then put the enzymolysis tank into a thermostat, and heat up to 50°C , heat preservation enzymolysis treatment for 8 hours; after the above enzymolysis treatment is completed, the enzymolysis product is obtained, and the obtained enzymolysis product is moved into a vacuum concentration tank. After processing, a concentrate is obtained;

[0065] Preparation of filter residue:

[0066] The concentrate obtained ...

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Abstract

The invention belongs to the field of rock wool board materials, and particularly relates to a preparation method of a high-strength damp-proof rock wool board. The method comprises the following steps: with cotton straw as a raw material, chopping the cotton straw by using a fodder chopper and then conducting grinding and mashing by using a stone mortar to obtain pretreated cotton straw; mixing the obtained pretreated cotton straw with pectinase and deionized water and then carrying out enzymolysis; performing concentrating to obtain an enzymolysis concentrate; oxidizing the concentrate withpotassium permanganate to obtain filter residues; subjecting the filter residues, a sodium silicate solution and hydrochloric acid to mixing, heating and reacting to obtain self-made functional filler; and finally, blending the self-made functional filler and other raw materials, and conducting pressing and dehydration to obtain the high-strength damp-proof rock wool board. The rock wool board prepared through the method is good in damp-proof performance, high in mechanical strength and wide in application prospect.

Description

technical field [0001] The invention belongs to the field of rock wool board materials, and in particular relates to a preparation method of a high-strength moisture-proof rock wool board. Background technique [0002] At present, the commonly used wall insulation materials are mainly divided into inorganic and organic. Organic materials are light in weight and have good heat preservation and heat insulation effects. It is not as safe to use as inorganic insulation materials. Inorganic thermal insulation materials have good fire performance and are non-toxic, and their application range is becoming wider and wider. [0003] As a kind of inorganic thermal insulation material, rock wool board is widely used in building exterior walls to play the role of thermal insulation, heat insulation, sound absorption and noise reduction. The existing rock wool board used as external wall insulation has a high thermal conductivity, generally 0.040W / (M K), and the thermal insulation effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B20/02C04B18/24C04B111/27
CPCC04B20/02C04B20/023C04B28/14C04B2111/27C04B2201/50C04B2201/52C04B18/24C04B14/28C04B14/108C04B14/22C04B14/041C04B24/302Y02W30/91
Inventor 王自浩
Owner 王自浩
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