A light-weight thermal insulation wallboard containing solid waste coal slag and its preparation process

A kind of thermal insulation wallboard, light-weight technology, applied in the field of building thermal insulation and flame retardant materials, can solve the problems of poor bonding, easy falling off of the inorganic shell, poor fireproof performance, etc., achieve good hardening, good thermal insulation performance, and reduce use volume effect

Active Publication Date: 2019-05-31
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved in the present invention is to overcome the disadvantages of poor fireproof performance of polyurethane particles itself, and the frequent occurrence of weak bonding of inorganic-wrapped organic materials, and the disadvantages that the inorganic shell layer is easy to fall off. The treated industrial waste cinder particles are used, Taking advantage of its easy-to-obtain, low-cost, and superior fire-resistant properties, a simple and easy method of surface modification of organic materials is provided to produce environmentally friendly wallboards to solve the above problems

Method used

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  • A light-weight thermal insulation wallboard containing solid waste coal slag and its preparation process
  • A light-weight thermal insulation wallboard containing solid waste coal slag and its preparation process
  • A light-weight thermal insulation wallboard containing solid waste coal slag and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh according to the mass parts of each component, 22 parts of cinder, 4 parts of bentonite, 1 part of polyacrylamide, 0.8 part of polyacryloxyethyltrimethylammonium chloride, 1.2 parts of sodium silicate, polyvinyl alcohol (the number average molecular weight is 20,000) 0.9 parts, 0.7 parts of butylene glycol, 0.8 parts of silane coupling agent, 40 parts of surface-modified polyurethane particles, 30 parts of high alumina cement, and appropriate amount of water.

[0032] The preparation method comprises the following steps:

[0033] (1) Cinder treatment and modification: Crush the cinder into cinder powder with a particle size of less than 0.3mm; put the cinder powder into an electric furnace for calcination, treat it at 900°C for 0.8 hours, take it out and grind it again; put the cinder powder into the 15% HCl, 8.5% H 2 SO 4 Soak in the mixed solution for 3 hours, filter, wash with water until neutral, and dry;

[0034] (2) Prepare a mixed solution containing 4.0...

Embodiment 2

[0039] Weigh according to the mass parts of each component, 15 parts of cinder, 3 parts of bentonite, 0.8 part of polyacrylamide, 0.5 part of polyacryloyloxyethyltrimethylammonium chloride, 0.9 part of sodium silicate, polyvinyl alcohol (the number average molecular weight is 130,000) 0.8 parts, 0.3 parts of butanediol, 0.3 parts of silane coupling agent, 35 parts of surface-modified polyurethane particles, 25 parts of high alumina cement, and appropriate amount of water.

[0040] The preparation method comprises the following steps:

[0041] (1) Coal cinder treatment and modification: pulverize the cinder into cinder powder with a particle size of less than 0.3mm; put the cinder powder into an electric furnace for calcination, treat it at 850°C for 0.5 hours, take it out and grind it again; put the cinder powder into the 12% HCl, 8% H 2 SO 4 Soak in the mixed solution for 2 hours, filter, wash with water until neutral, and dry; prepare a mixed solution containing 3% polyacr...

Embodiment 3

[0046] Weigh according to the parts by weight of each component, 25 parts of cinder, 5 parts of bentonite, 1.2 parts of polyacrylamide, 1.0 part of polyacryloyloxyethyltrimethylammonium chloride, 1.5 parts of sodium silicate, polyvinyl alcohol (the number average molecular weight is 200,000) 1.5 parts, 0.8 parts of butanediol, 1.0 parts of silane coupling agent, 45 parts of surface-modified polyurethane particles, 35 parts of high alumina cement, and appropriate amount of water.

[0047] The preparation method comprises the following steps:

[0048] (1) Coal slag treatment and modification: Grind the coal slag into cinder powder with a particle size of less than 0.3mm; put the cinder powder into an electric furnace for calcination, treat it at 955°C for 1 hour, take it out and grind it again; put the cinder powder into the 20% HCl, 10% H 2 SO 4 Soak in the mixed solution for 4 hours, filter, wash with water until neutral, and dry; prepare a mixed solution containing 4.5% pol...

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Abstract

The invention relates to a lightweight thermal insulation wallboard, which is composed of cinder, bentonite, polyacrylamide, polyacryloyloxyethyl trimethylammonium chloride, sodium silicate, polyvinyl alcohol, butylene glycol, a silane coupling agent, polyurethane particles and high alumina cement. A thermal insulation layer of the thermal insulation wallboard is composed of orderedly arranged surface modified polyurethane particles subjected to plasma surface treatment, a refractory layer is composed of polyacrylamide and polyacryloyloxyethyl trimethylammonium chloride modified cinder particles wrapping the surfaces of the polyurethane particles and high alumina cement filling the gaps between the composite polyurethane particles. The lightweight thermal insulation wallboard provided by the invention takes waste cinder as an inorganic refractory material, and adopts plasma surface treatment modified polyurethane particles as a thermal insulation material, realizes waste recycling, also utilizes a mechanical or physical method to treat the polymer surface, reduces the use of organic additive types and amounts, and the prepared wallboard has light weight and significant thermal insulation and refractory effects. The invention also discloses a preparation method of the lightweight thermal insulation wallboard.

Description

technical field [0001] The invention relates to a building heat-preservation and flame-retardant material, in particular to a light-weight heat-preservation wallboard produced by using coal slag and a preparation process thereof. Background technique [0002] With the development of my country's economy and society, people's requirements for building materials are getting higher and higher. The function of thermal insulation and fire retardant of wall panels is the focus of people's attention, especially in recent years, frequent fire accidents caused by inferior building materials have prompted R&D workers to develop some new thermal insulation and flame retardant materials. [0003] At present, the insulation wallboard materials mainly include the following types. The organic polymer materials are polystyrene board (EPS board), polyurethane (PU) hard board, polycarbonate (PC) and phenolic (PF) foam board, etc. , of which polystyrene foam and polyurethane foam are the most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B14/10C04B16/08C04B18/04C04B22/08C04B24/02C04B24/26C04B24/42C04B111/40
CPCY02W30/91
Inventor 丁寅徐东洋
Owner NANJING UNIV
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