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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AI-Extracted 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 c...
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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.

Application Domain

Solid waste management

Technology Topic

Cohesive strengthCarboxylic group +10

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

Examples

  • Experimental program(6)
  • Comparison scheme(2)

Example Embodiment

[0019] Example 1
[0020] The reinforcing fibers include steps as follows:
[0021] Step S1, calcine the basalt fiber at 300 ° C for 2 h, then warmed to 450 ° C, continued calcination of 2 h, resulting in the treatment of basalt fibers, spares the oxidation graphene in deionized water, ice water bath, ultrasonic dispersion, system Dispersing liquid, spare; 3, 3 ', 4, 4'-diphenone tetracarboxylic acid and 4,4'-di amino diphenyl ether were sequentially added to N, N-dimethylformamide, stirred at a constant speed until Dissolve, stand for 10 min, produce reaction liquid, spare, and control the amount ratio of gossipide and deionized water of 3 g: 50 ml, 3, 3 ', 4,4'-diphenone tetracarboxylic acid and 4, 4' The molar ratio of diaminiphenylene ether is 1: 1, 3, 3 ', 4,4'-diphenone tetral carboxylic acid and N, N-dimethylformamide is 1 g: 50 mL;
[0022] Step S2, slowly dropped the reaction liquid to the dispersion, stirred at a speed of 100 min at a speed of 100 minutes, and the composite emulsion, the volume ratio of the reaction liquid and the dispersion was 1: 1, followed by spraying the composite emulsion in treatment. After the surface of the basalt fiber, the spray thickness was 0.15 mM, dried at 100 ° C for 4 h, and then cooled to room temperature for 12 h after drying, and then dried to improve the fiber.

Example Embodiment

[0023] Example 2
[0024] The reinforcing fibers include steps as follows:
[0025] Step S1, calcine the basalt fiber at 300 ° C for 2 h, then warmed to 450 ° C, continued calcination of 2 h, resulting in the treatment of basalt fibers, spares the oxidation graphene in deionized water, ice water bath, ultrasonic dispersion, system Dispersing liquid, spare; 3, 3 ', 4, 4'-diphenone tetracarboxylic acid and 4,4'-di amino diphenyl ether were sequentially added to N, N-dimethylformamide, stirred at a constant speed until Dissolved, allowed for 10 min, prepared reaction liquid, spare, control of oxide oxide and deionized water, 4 g: 50 ml, 3, 3, 4,4'-diphenone tetracarboxylic acid and 4, 4 ' - The molar ratio of diaminiphenylene ether is 1.1: 1, 3, 3 ', 4,4'-diphenone tetral carboxylic acid and N, N-dimethylformamide is 1.2 g: 50 ml;
[0026] Step S2, slowly dropped the reaction liquid to the dispersion, stirred at a speed of 100 min at a speed of 100 minutes, and the composite emulsion, the volume ratio of the reaction liquid and the dispersion was 1: 1, followed by spraying the composite emulsion in treatment. After the surface of the basalt fiber, the spray thickness was 0.20 mm, dried at 100 ° C for 4 h, and then cooled to room temperature for 12 h after drying, and then dried to improve the fiber.

Example Embodiment

[0027] Example 3
[0028] The reinforcing fibers include steps as follows:
[0029] Step S1, calcine the basalt fiber at 300 ° C for 2 h, then warmed to 450 ° C, continued calcination of 2 h, resulting in the treatment of basalt fibers, spares the oxidation graphene in deionized water, ice water bath, ultrasonic dispersion, system Dispersing liquid, spare; 3, 3 ', 4, 4'-diphenone tetracarboxylic acid and 4,4'-di amino diphenyl ether were sequentially added to N, N-dimethylformamide, stirred at a constant speed until Dissolve, stand for 10 min, produce reaction liquid, spare, control of oxide oxide and deionized water to 5 g: 50 ml, 3, 3 ', 4,4'-diphenone tetracarboxylic acid and 4, 4' The molar ratio of diaminiphenylene ether is 1.2: 1, 3, 3 ', 4,4'-diphenone tetral carboxylic acid and N, N-dimethylformamide is 1.5 g: 50 ml;
[0030] Step S2, slowly dropped the reaction liquid to the dispersion, stirred at a speed of 100 min at a speed of 100 minutes, and the composite emulsion, the volume ratio of the reaction liquid and the dispersion was 1: 1, followed by spraying the composite emulsion in treatment. After the surface of the basalt fiber, the spray thickness was 0.25 mm, dried at 100 ° C for 4 h, and then cooled to room temperature for 12 h after drying, and then dried, reinforcing fibers.

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