Modified forming cement board

A foamed cement board and modification technology, applied in the field of building materials, can solve the problems of low thermal conductivity, poor mechanical properties, easy to break, etc., and achieve the effects of good fire resistance, good weather resistance, and good thermal insulation performance.

Active Publication Date: 2015-08-12
CHONGQING BANGRUI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foamed cement board is a kind of external wall insulation material that is gradually emerging at present. It is not easy to age, has the same life as the building, light bulk density, low thermal conductivity, and the fire resistance limit is more than 3 hours. Poisonous gas and other advantages, but the disadvantages of the foamed cement version are also obvious, that is, poor mechanical properties, low strength, high brittleness, very easy to break and damage, which brings great inconvenience to the transportation and construction process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, the foamed cement board raw materials include the following components in parts by weight:

[0030] 100 parts of ordinary Portland cement, 30 parts of fly ash, 15 parts of hydrogen peroxide, 2 parts of decabromodiphenylethane, 2 parts of sulfonated acetone formaldehyde condensation polymer, 3 parts of multi-polymer dispersant, 3 parts of polyurethane, 4 parts Foam stabilizer, 5 parts of coupling agent, 8 parts of alkali-resistant fiber, 1.5 parts of bis(2,2,6,6,-tetramethyl-4-piperidinyl) sebacate, 1 part of ultraviolet absorber.

[0031] In this example, the sulfonated acetone-formaldehyde polycondensate is prepared by the following method: after mixing and stirring sodium sulfite and water, slowly add acetone dropwise at a temperature of 50° C., then raise the temperature to 50° C., keep it warm for 1 hour, and then Formaldehyde was slowly added dropwise at 70°C, then the temperature was raised to 90°C, and the temperature was kept for 4 hours.

...

Embodiment 2

[0039] Modified foamed cement board of the present invention, described foamed cement board raw material comprises the following components by weight:

[0040] 100 parts of ordinary Portland cement, 25 parts of fly ash, 11 parts of hydrogen peroxide, 0.5 parts of decabromodiphenylethane, 0.5 parts of sulfonated acetone formaldehyde condensation polymer, 1 part of multi-polymer dispersant, 1 part of polyurethane, 2 parts Foam stabilizer, 3 parts of coupling agent, 6 parts of alkali-resistant fiber, 0.5 part of bis(2,2,6,6,-tetramethyl-4-piperidinyl) sebacate, 0.5 part of ultraviolet absorber.

[0041] In this example, the sulfonated acetone-formaldehyde polycondensate is obtained by the following method: after mixing and stirring sodium sulfite and water, slowly add acetone dropwise at a temperature of 50° C., then raise the temperature to 50° C., keep it warm for 1 hour, and then Formaldehyde was slowly added dropwise at 70°C, then the temperature was raised to 90°C, and the t...

Embodiment 3

[0049] Modified foamed cement board of the present invention, described foamed cement board raw material comprises the following components by weight:

[0050] 100 parts of ordinary Portland cement, 40 parts of fly ash, 18 parts of hydrogen peroxide, 3 parts of decabromodiphenylethane, 3 parts of sulfonated acetone formaldehyde condensation polymer, 5 parts of multi-polymer dispersant, 5 parts of polyurethane, 6 parts Foam stabilizer, 6 parts of coupling agent, 12 parts of alkali-resistant fiber, 2 parts of bis(2,2,6,6,-tetramethyl-4-piperidinyl) sebacate, 2 parts of ultraviolet absorber.

[0051] In this example, the sulfonated acetone-formaldehyde polycondensate is prepared by the following method: after mixing and stirring sodium sulfite and water, slowly add acetone dropwise at a temperature of 50° C., then raise the temperature to 50° C., keep it warm for 1 hour, and then Formaldehyde was slowly added dropwise at 70°C, then the temperature was raised to 90°C, and the temp...

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Abstract

The present invention discloses a modified foaming cement board, wherein the raw materials comprise a ordinary silicate cement, fly ash, hydrogen peroxide, bis(pentabromophenyl) ethane, a sulfonated acetone formaldehyde polycondensate, a multi-component copolymer dispersing agent, polyurethane, a foam stabilizer, a coupling agent, alkali-resistant fibers, bis(2,2,6,6,-tetramethyl-4-piperidyl)sebacate, 2-hydroxy-4-methoxy benzophenone, and an ultraviolet ray absorber. The modified foaming cement board has the following characteristics that the thermal insulation property is good, the product dry density is 150-200 kg / m<3>, the thermal conductivity is 0.05-0.06 W / (m*K), and the good thermal-insulation and energy-saving effect is provided; the fire prevention performance is good, the fire resistance limit is more than 3 h, and the material can meet the grade A fire prevention standard so as to provide good fire resistance; the sound insulation performance is good so as to substantially reduce the noise impact; the durability is good, and characteristics of high temperature resistance, low temperature resistance, corrosion resistance, ultraviolet ray radiation resistance, and good weathering resistance are provided; the 1 day strength of the product with the dry density of 170 kg / m<3> can achieve 0.3 mpa, and the 28-day strength can achieve 0.4 mpa; and characteristics of early strength and high strength are provided, and problems of high brittleness and easy damage are overcome.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a modified foamed cement board. Background technique [0002] The implementation of building energy-saving policies has promoted the development of wall insulation materials. Organic foam plastic insulation materials such as polystyrene and polyurethane are widely used in wall insulation. However, such organic foam plastic insulation materials are extremely flammable. When burning, the fire spreads rapidly and is accompanied by a large amount of poisonous gas and smoke. Serious difficulties in work, resulting in casualties and property damage. At the same time, this type of insulation material also has disadvantages such as easy aging and poor dimensional stability. Compared with organic foam insulation materials, inorganic insulation materials have the advantages of good fire resistance, small deformation coefficient, strong anti-aging performance, and stable perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/02C04B22/06C04B24/16
Inventor 杨震峰
Owner CHONGQING BANGRUI NEW MATERIAL CO LTD
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