Prefabricated foamed lightweight insulation mineral polymer wallboard and preparation method thereof

A technology of mineral polymer and wallboard, applied in the field of prefabricated foamed lightweight high-strength thermal insulation mineral polymer wallboard and its preparation, prefabricated foamed mineral polymer wallboard and its preparation field, can solve the problem of excessive weight of prefabricated concrete components , low compressive strength, low flexural strength, failure to meet the design requirements, etc., to achieve the effect of high cost performance, improve waterproof performance, and increase crack resistance

Inactive Publication Date: 2019-01-15
BEIJING ACAD OF BUILDING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for steel structure buildings, light-weight, thermal insulation, and decorative external panels are required. Prefabricated concrete components cannot meet the design requirements due to the excessive weight per unit area, and there is an urgent need for new lightweight external wall panel maintenance materials.
At present, steel structure buildings generally use ALC fly ash steam-cured board, cement EPS board, cement foam board and other slabs. The thermal insulation performance of this type of material can meet the requirements, but due to the low compr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Place the box-shaped mold horizontally on the steel platform, the mold is 20cm deep x 300cm long x 300cm wide, apply the release agent, place the Φ8 steel mesh that has been treated with epoxy anticorrosion, and put 1200kg of the measured first-class fly ash, ore Powder 80kg, metakaolin 50kg, alkali-resistant glass fiber 8kg, calcium stearate 5kg, stir evenly, add water glass 650kg, caustic soda 50kg, water 150kg, stir evenly, then add 7kg hydrogen peroxide, stir evenly, pour evenly in the mold. After foaming, scrape it flat, remove excess slurry, stop for 5 hours to solidify, then cover with plastic film and steam for 24 hours at 60°C with a cooling rate of 5°C / h, and remove the mold after cooling down to room temperature to form a large exterior wall plate.

[0029] The following performance tests were carried out on the obtained external wall slabs:

[0030] Tested according to GB11970, the bulk density after drying is 1050kg / m 3 ;

[0031] Tested according to the...

Embodiment 2

[0034] Place a mold with a thickness of 20cm×length 300cm×width 300cm horizontally on a steel platform, apply a release agent, place a Φ8 double-layer stainless steel mesh, and measure 1100kg of first-grade pulverized coal, 60kg of mineral powder, 60kg of metakaolin, Stir 4kg of polyacrylonitrile fiber, 3kg of calcium stearate evenly, add 600kg of water glass, 48kg of caustic soda, and 145kg of water, stir evenly, then add 5kg of hydrogen peroxide, stir evenly, and pour evenly in the mold. After foaming, scrape it flat, remove excess slurry, stop for 4 hours to solidify, then cover with plastic film and steam for 16 hours at 80 degrees, cool down, remove the formwork, and form a large external wall slab.

[0035] The following performance tests were carried out on the obtained external wall slabs:

[0036] Tested according to GB11970, the bulk density after drying is 1100kg / m 3 ;

[0037] Tested according to the provisions of GB11971, its compressive strength is 11.5MPa, and...

Embodiment 3

[0040] Place a mold with a thickness of 20cm×length 300cm×width 300cm horizontally on a steel platform, apply a release agent, place a Φ10 double-layer glass fiber resin mesh, and mix 1200kg of first-grade pulverized coal, 60kg of mineral powder, and metakaolin 50kg, 4kg of polypropylene fiber, 1kg of silicone waterproofing agent and stir evenly, add 620kg of water glass, 45kg of caustic soda, 150kg of water, stir evenly, then add 4kg of hydrogen peroxide, stir evenly, and pour evenly in the mold. After foaming, scrape it flat, remove excess slurry, stop for 6 hours to solidify, then cover with plastic film and steam for 18 hours at 80°C, cool down, remove the formwork, and form a large exterior wall slab.

[0041] The following performance tests were carried out on the obtained external wall slabs:

[0042] Tested according to GB11970, the bulk density after drying is 1000kg / m 3 ;

[0043] Tested according to the provisions of GB11971, its compressive strength is 10.0MPa, a...

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Abstract

The invention discloses a prefabricated foamed lightweight insulation mineral polymer wallboard and a preparation method thereof. The wallboard comprises the following raw materials (by weight): 200-500 parts of fly ash, 5-50 parts of mineral powder, 1-50 parts of metakaolin, 100-300 parts of water glass, 5-50 parts of caustic soda, 1-30 parts of a foaming agent, 1-300 parts of a water-proofing agent, 1-20 parts of fiber, 5-100 parts of water, and reinforcing mesh slice. The reinforcing mesh slice is laid in a mold, the above raw materials are fully stirred to prepare slurry and the slurry ispoured into the mold pulped; and after solidification at room temperature, steam curing is conducted at 40-95 DEG C for 3-24 hours to prepare a mineral polymer foamed lightweight high-strength self-insulation wallboard. The product has the characteristics of light weight, high strength, heat preservation, fireproofness, durability and one-time molding of large board. The method can be convenientlyrealized in the traditional prefabricated concrete wallboard production line, and is particularly suitable for external wallboards for steel structure buildings.

Description

technical field [0001] The invention relates to a prefabricated foamed mineral polymer wallboard and a preparation method thereof, in particular to a prefabricated foamed light-weight high-strength thermal insulation mineral-polymer wallboard and a preparation method thereof, belonging to the field of construction for the preparation of prefabricated components of light-weight high-strength wallboards technology field. Background technique [0002] With the development of prefabricated housing industrialization technology, prefabricated concrete wall panels have become one of the main components of prefabricated housing. Generally, concrete materials are used to prepare load-bearing and thermal insulation PC sandwich composite wall panels, which are mostly used for load-bearing members of shear walls, and their unit area density is generally greater than 600kg / m 2 . However, for steel structure buildings, light-weight, heat-insulating, and decorative external panels are re...

Claims

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Application Information

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IPC IPC(8): C04B28/26B28B23/02C04B111/40
CPCB28B23/022C04B28/006C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/08C04B14/02C04B14/106C04B22/062C04B22/068C04B24/085C04B14/44C04B16/0658C04B16/0633C04B24/42
Inventor 王万金贺奎孔韬刘俊元夏义兵王靖王霞査炎鹏马强昂源张晓奇
Owner BEIJING ACAD OF BUILDING ENG
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