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Cement-based mat for composite board and production process of cement-based mat

A production process and cement-based technology, applied in the field of cement-based thin felt for composite boards and its production process, can solve the problems of poor strength, low cohesive strength, easy delamination, etc. Increase the effect of mechanical riveting and improve the cohesive strength

Active Publication Date: 2022-01-07
安徽瑞联节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]Existing exterior wall panels are directly in contact with the building wall through mud. After a long time, they are prone to fall off due to poor strength. A cement-based fiberglass mat that is firmly bonded can alleviate this problem very well
[0003]Cement-based glass fiber mats currently on the market have low cohesive strength. The strength is too low and it is easy to delaminate; due to the unreasonable design of the preparation process, when the cement-based glass fiber mat encounters a high-humidity environment or a water-containing environment, its internal structure will be damaged and its strength will be greatly reduced

Method used

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  • Cement-based mat for composite board and production process of cement-based mat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Described reinforcing fiber comprises the following steps to make:

[0021] Step S1, calcining the basalt fiber at 300°C for 2h, then raising the temperature to 450°C, and continuing to calcinate for 2h to obtain the treated basalt fiber for later use; disperse the graphene oxide in deionized water, and ultrasonically disperse it in an ice-water bath to prepare The dispersion was obtained for later use; 3,3',4,4'-benzophenone tetracarboxylic acid and 4,4'-diaminodiphenyl ether were sequentially added to N,N-dimethylformamide, and stirred at a uniform speed until Dissolve, let stand for 10min, prepare reaction liquid, set aside, control the dosage ratio of graphene oxide and deionized water to be 3g: 50mL, 3,3',4,4'-benzophenone tetracarboxylic acid and 4,4' -The molar ratio of diaminodiphenyl ether is 1:1, and the consumption ratio of 3,3',4,4'-benzophenone tetracarboxylic acid and N,N-dimethylformamide is 1g:50mL;

[0022] Step S2, slowly drop the reaction liquid into...

Embodiment 2

[0024] Described reinforcing fiber comprises the following steps to make:

[0025] Step S1, calcining the basalt fiber at 300°C for 2h, then raising the temperature to 450°C, and continuing to calcinate for 2h to obtain the treated basalt fiber for later use; disperse the graphene oxide in deionized water, and ultrasonically disperse it in an ice-water bath to prepare The dispersion was obtained for later use; 3,3',4,4'-benzophenone tetracarboxylic acid and 4,4'-diaminodiphenyl ether were sequentially added to N,N-dimethylformamide, and stirred at a uniform speed until Dissolve, let stand for 10min, prepare reaction liquid, set aside, control the dosage ratio of graphene oxide and deionized water to be 4g: 50mL, 3,3',4,4'-benzophenone tetracarboxylic acid and 4,4' -The molar ratio of diaminodiphenyl ether is 1.1:1, and the dosage ratio of 3,3',4,4'-benzophenone tetracarboxylic acid and N,N-dimethylformamide is 1.2g:50mL;

[0026] Step S2, slowly drop the reaction liquid into ...

Embodiment 3

[0028] Described reinforcing fiber comprises the following steps to make:

[0029] Step S1, calcining the basalt fiber at 300°C for 2h, then raising the temperature to 450°C, and continuing to calcinate for 2h to obtain the treated basalt fiber for later use; disperse the graphene oxide in deionized water, and ultrasonically disperse it in an ice-water bath to prepare The dispersion was obtained for later use; 3,3',4,4'-benzophenone tetracarboxylic acid and 4,4'-diaminodiphenyl ether were sequentially added to N,N-dimethylformamide, and stirred at a uniform speed until Dissolve, let stand for 10min, prepare reaction solution, set aside, control the dosage ratio of graphene oxide and deionized water to be 5g: 50mL, 3,3',4,4'-benzophenone tetracarboxylic acid and 4,4' -The molar ratio of diaminodiphenyl ether is 1.2:1, and the consumption ratio of 3,3',4,4'-benzophenone tetracarboxylic acid and N,N-dimethylformamide is 1.5g:50mL;

[0030] Step S2, slowly drop the reaction liqui...

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PUM

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Abstract

The invention relates to a cement-based mat for a composite board. The cement-based mat comprises a glass fiber mat and slurry coating two sides of the glass fiber mat. The slurry is prepared from the following raw materials in parts by weight: 15-35 parts of cement, 10-20 parts of reinforced fibers, 10-25 parts of barium sulfate, 15-26 parts of an acrylic emulsion, 0.1-0.5 part of a thickening agent, 0.5-1 part of an anti-permeability agent and 10-20 parts of water. In the preparation process of the reinforced fiber, carboxyl of amic acid and hydroxyl on the surface of graphene oxide can be subjected to dehydration condensation to form a stable intercalation structure, the composite emulsion can form a film on the surface of the fiber, and the added graphene oxide forms convex particles, so that the roughness of the surface of the fiber is increased, the mechanical riveting effect between the fiber and the matrix can be increased, the cohesive strength is improved, and the problem that the fiber is easy to layer when encountering water due to too low bonding strength is solved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a thin cement-based felt for a composite board and a production process thereof. Background technique [0002] Existing exterior wall panels are directly in contact with the building wall through mud, and are prone to fall off due to poor strength after a long time. However, adding a layer of cement-based glass fiber thin felt that is firmly bonded to cement on the surface of the exterior wall panels can be very good. alleviate this problem. [0003] The cement-based glass fiber mats currently on the market have low cohesive strength. In actual use, due to the low cohesive strength, the bonding strength is too low and easy to delaminate; due to the unreasonable design of the preparation process , When the cement-based glass fiber mat encounters a high-humidity environment or a water-containing environment, its internal structure will be damaged and its str...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B20/10C04B14/46
CPCC04B28/00C04B20/1066C04B20/1022C04B14/4643C04B2201/50C04B22/143C04B24/26C04B2103/44C04B2103/65C04B14/42Y02W30/91
Inventor 范伟王壮王智伟文礼冯家玉徐成余亚梅沈佳佳王永回
Owner 安徽瑞联节能科技股份有限公司
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