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Composite board and preparation method thereof

A composite board and composite technology, applied in chemical instruments and methods, ceramic products, wood layered products, etc., can solve the problems of insufficient surface decoration, low strength of cement board, poor impact toughness, etc., and achieve surface decoration Reinforcement, improvement of overall mechanical properties, and improvement of strength

Active Publication Date: 2015-12-30
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a composite board and its preparation method, aiming to solve technical problems such as low strength of foamed cement board, poor impact toughness and insufficient surface decoration

Method used

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  • Composite board and preparation method thereof
  • Composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of the flame-retardant wood fiber surface-foamed cement thermal insulation and decoration integrated board is illustrated by taking the foamed cement core material as 50 mm, and the upper and lower fiber panels as 10 mm respectively. The specific process includes the following steps:

[0053] 80 parts of #425 ordinary Portland cement, 10 parts of ceramic powder, 0.3 part of calcium stearate, 0.4 part of polycarboxylate superplasticizer, 0.2 part of polypropylene fiber, 6 parts of hydrogen peroxide solution, and 30 parts of water. First, mix the polypropylene fiber with water, and mix well, then add water reducer, cement, ceramic powder, calcium stearate, etc. Hydrogen oxide solution, under the rotation speed of 800r / min, stir rapidly for 6-8s, then put the slurry into the mold, let it stand for foaming, demould after 24 hours of hardening, and the foamed cement after demoulding continues to be cured for 7 days Carry out cutting to obtain foamed ce...

Embodiment 2

[0056] The preparation method of the flame-retardant wood fiber surface-foamed cement thermal insulation and decoration integrated board is illustrated by taking the foamed cement core material as 50 mm, and the upper and lower fiber panels as 10 mm respectively, including the following steps:

[0057] 100 parts of #425 ordinary Portland cement, 15 parts of ceramic powder, 0.4 part of calcium stearate, 0.6 part of polycarboxylate superplasticizer, 0.3 part of polypropylene fiber, 6.5 parts of hydrogen peroxide solution, and 38 parts of water. First, mix the polypropylene fiber with water, and mix well, then add water reducer, cement, ceramic powder, calcium stearate, etc. Hydrogen oxide solution, under the rotation speed of 800r / min, stir rapidly for 6-8s, then put the slurry into the mold, let it stand for foaming, demould after 24 hours of hardening, and the foamed cement after demoulding continues to be cured for 7 days Carry out cutting to obtain foamed cement board with a...

Embodiment 3

[0060] The preparation method of the flame-retardant wood fiber surface-foamed cement thermal insulation and decoration integrated board is illustrated by taking the foamed cement core material as 50 mm, and the upper and lower fiber panels as 10 mm respectively, including the following steps:

[0061] 100 parts of #425 ordinary Portland cement, 15 parts of ceramic powder, 0.4 part of calcium stearate, 0.8 part of polycarboxylate superplasticizer, 0.3 part of polypropylene fiber, 6 parts of hydrogen peroxide solution, and 42 parts of water. First, mix the polypropylene fiber with water, and mix well, then add water reducer, cement, ceramic powder, calcium stearate, etc. Hydrogen oxide solution, under the rotation speed of 800r / min, stir rapidly for 6-8s, then put the slurry into the mold, let it stand for foaming, demould after 24 hours of hardening, and the foamed cement after demoulding continues to be cured for 7 days Carry out cutting to obtain foamed cement board with a d...

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Abstract

The invention relates to a composite board which comprises a wood fiber surface layer and a foaming cement sandwich layer. Preferably, the wood fiber surface layer comprises a wood fiber, a flame retardant and an adhesive. The invention also provides a preparation method of the composite board, which comprises the following steps: preparing a foaming cement board; providing the wood fiber; applying the adhesive on the wood fiber; applying the flame retardant on the wood fiber on which the adhesive is applied; paving the wood fiber obtained in the step D for forming, and pre-pressing to obtain formed slabs; and putting the foaming cement board between the two formed slabs, pre-pressing, and then molding by hot pressing. The composite board provided by the invention has improved overall mechanical properties and enhanced surface decoration property, can be applied to the fields of thermal insulation of industrial and civil building walls, internal decorative sheets of buildings, internal partition walls of offices, fireproof wallboards, sound insulation and noise reduction and the like, and has relatively good economical and social benefits.

Description

technical field [0001] The invention relates to a composite board and a preparation method thereof. Background technique [0002] Foamed cement insulation board is a lightweight porous cement board made of cement, foaming agent, admixture, reinforcing fiber and other additives through chemical foaming. Due to its low thermal conductivity, good heat preservation effect, Excellent properties such as flame retardant and fire prevention are widely used in the fields of industrial and civil building wall insulation, interior partition wall core materials, and sound insulation and noise reduction. [0003] However, at present, foamed cement boards face two major problems. One is that the compressive strength is too small to bear large pressures; the other is that they have poor toughness and high brittleness, and are prone to collision damage during handling. [0004] For this reason, a lot of work is mainly focused on improving the compressive performance of the foamed cement bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/80E04B1/94B32B21/02B32B13/10B32B13/02B32B37/06C04B38/02C04B28/00
Inventor 陈志林牛二彦张龙飞李红霞
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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