Carbon fiber reinforced gypsum board and preparation method thereof

A technology of gypsum board and carbon fiber, which is applied in the field of building materials, can solve the problem of no obvious change in the strength of gypsum, and achieve the effects of scientific compatibility, improved flexural strength, and remarkable water resistance

Inactive Publication Date: 2018-09-28
威海南海碳材料科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in domestic research on fiber-reinforced gypsum boards, plant fibers, glass fibers, asbestos fibers, vinylon fibers, and organic synthetic fibers have all been used to strengthen gypsum, but there is no significant change in the improvement of gypsum strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A carbon fiber reinforced gypsum board is prepared, comprising the following steps:

[0026] (1) Weigh 70 parts of phosphogypsum powder, 20 parts of diatomaceous earth, 5 parts of glucose, 4 parts of sodium carboxymethyl cellulose, and 160 parts of water according to the required parts by weight, with a diameter of 3 to 8 μm and a length of 20 parts of 5mm chopped carbon fiber.

[0027] (2) Completely immerse the chopped carbon fiber weighed in step (1) in concentrated nitric acid and heat to 80°C for the first heat treatment for 45 minutes; then heat to 110°C for the second heat treatment for 60 minutes; reheat After the third heat treatment at 90°C for 50 minutes, the chopped carbon fibers were taken out and washed fully with water, the surface of the chopped carbon fibers was completely rinsed with nitric acid, and then put into an oven for 8 hours at 120°C to obtain modified short carbon fibers. Cut carbon fiber.

[0028] (3) After adding the glucose weighed in st...

Embodiment 2

[0032] A carbon fiber reinforced gypsum board is prepared, comprising the following steps:

[0033] (1) Weigh according to the required parts by weight: 110 parts of desulfurized gypsum powder, 30 parts of diatomaceous earth, 10 parts of glucose, 12 parts of admixture methyl cellulose, 200 parts of water, with a diameter of 3-8 μm and a length of 25 m 30 parts of chopped carbon fiber.

[0034] (2) Completely immerse the chopped carbon fiber weighed in step (1) in concentrated nitric acid and heat to 100°C for the first heat treatment for 60 minutes; then heat to 140°C for the second heat treatment for 120 minutes; reheat After the third heat treatment at 120°C for 80 minutes, the chopped carbon fibers were taken out and washed fully with water, the surface of the chopped carbon fibers was completely rinsed with nitric acid, and then put into an oven for 8 hours at 120°C to obtain modified short carbon fibers. Cut carbon fiber.

[0035] (3) After adding the glucose weighed in...

Embodiment 3

[0039] A carbon fiber reinforced gypsum board is prepared, comprising the following steps:

[0040] (1) Weigh according to the required parts by weight: 100 parts of desulfurized gypsum powder, 27 parts of diatomaceous earth, 8 parts of glucose, 10 parts of sodium carboxymethyl cellulose, 190 parts of water, with a diameter of 3 to 8 μm and a length of 27 parts for 20mm chopped carbon fiber.

[0041] (2) Completely immerse the chopped carbon fiber weighed in step (1) in concentrated nitric acid and heat to 90°C for the first heat treatment for 55 minutes; then heat to 130°C for the second heat treatment for 110 minutes; reheat After the third heat treatment at 110°C for 60 minutes, the chopped carbon fibers were taken out and washed fully with water, and the surface of the chopped carbon fibers was completely rinsed with nitric acid, and then put into an oven for 8 hours at 120°C to obtain modified short carbon fibers. Cut carbon fiber.

[0042] (3) After adding the glucose we...

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Abstract

The invention relates to a carbon fiber reinforced gypsum board and a preparation method thereof. The technical problem that a gypsum board is low in rupture strength, poor in compressive strength andpoor in waterproof performance in the prior art is solved. The carbon fiber reinforced gypsum board provided by the invention is prepared from the following raw material components: 70-110 parts of agypsum powder, 20-30 parts of diatomite, 5-10 parts of glucose, 4-12 parts of an admixture, 160-200 parts of water and 20-30 parts of chopped carbon fibers. Moreover, the invention further provides apreparation method of the carbon fiber reinforced gypsum board. The carbon fiber reinforced gypsum board disclosed by the invention is widely applied to the technical field of building materials.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a carbon fiber reinforced gypsum board and a preparation method thereof. Background technique [0002] As a traditional air-hardening inorganic gelling material, gypsum has been widely used in the fields of decoration, wall, heat preservation, fire prevention, and sound absorption. However, its low flexural strength and impact resistance, fragility and poor waterproof performance limit its application range. In order to improve the performance of gypsum, people have successfully studied gypsum composite materials by means of reinforcement and filling, and expanded its application range. At present, in domestic research on fiber-reinforced gypsum boards, plant fibers, glass fibers, asbestos fibers, vinylon fibers, and organic synthetic fibers have all been used to strengthen gypsum, but there is no obvious change in the improvement of gypsum strength. Contents of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B20/04C04B14/38C04B111/27
CPCC04B14/386C04B20/04C04B28/143C04B2111/27C04B2201/50C04B14/08C04B24/10C04B24/383C04B22/002C04B20/02
Inventor 李正坤李文涛
Owner 威海南海碳材料科技研究院有限公司
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