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A light-weight polymer insulation material and its preparation method

A technology of thermal insulation material and texture, applied in ceramic products, other household appliances, cement production and other directions, can solve the problems of poor durability of foamed concrete, high cost of preparation method, poor compressive strength, etc., achieve good thermal insulation performance, improve Mechanical properties, effect of reducing density

Active Publication Date: 2021-01-22
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a light-weight polymer insulation material and its preparation method in order to solve the problems of poor durability, poor compressive strength, high production cost and non-environmental protection of the existing foam concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] Specific Embodiment 1: In this embodiment, a light-weight polymer insulation material consists of 30-60 parts by weight of fly ash, 5-20 parts of metakaolin, 3-5 parts of sodium hydroxide, and 10-20 parts of water. It is composed of glass, 9-18 parts of water, 0.8-1.8 parts of foaming agent, 0.1-0.3 parts of foam stabilizer and 1.0-3.0 parts of lightweight aggregate.

[0020] In this embodiment, metakaolin is a highly active anhydrous aluminum silicate material formed by calcining kaolin at a temperature of 800-900°C.

[0021] The dry apparent density of foamed concrete obtained in this embodiment is 300~700kg / m 3 , The compressive strength is 2.0~6.0MPa, and the thermal conductivity is 0.080~0.120W / (m·k). The green geopolymer foam concrete with high strength, light weight and good thermal insulation performance can be produced in batches, and the problems of low strength and poor durability of foam concrete can be solved.

specific Embodiment approach 2

[0022] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the described fly ash is F class I class fly ash. Others are the same as the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the sodium hydroxide is a solid with a purity greater than 96%. Others are the same as those in Embodiment 1 or 2.

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PUM

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Abstract

The invention relates to a light geopolymer thermal insulation material and a preparation method thereof, in particular to a light geopolymer thermal insulation material and a preparation method thereof. The invention aims to solve the problems of poor durability and poor compressive strength of existing foam concrete, and high cost of a preparation method and no environmental protection. The thermal insulation material is composed of fly ash, metakaolin, sodium hydroxide, water glass, water, a foaming agent, a foam stabilizer and lightweight aggregate. The preparation method comprises the following steps: uniformly stirring and mixing the fly ash and metakaolin dry materials, adding the alkali activator and water, stirring to obtain geopolymer slurry, adding the foaming agent and the foamstabilizer into the slurry, quickly stirring, adding the lightweight aggregate, continuously stirring, uniformly mixing to obtain geopolymer foam concrete slurry, and finally carrying out injection molding, demolding and room-temperature curing. According to the invention, the green geopolymer foam concrete with high strength, light weight and good thermal insulation property is obtained. The invention is applied to the technical field of building materials.

Description

technical field [0001] The invention relates to a lightweight polymer thermal insulation material and a preparation method thereof. Background technique [0002] As a lightweight porous material, foamed concrete is widely used in thermal insulation components in my country. The density of foam concrete is usually 10-50% of ordinary concrete, effectively reducing the weight of the structure. Ordinary foam concrete is a large number of products made of Portland cement-based foam concrete. Due to the long setting time of cement, the foam concrete contains a large number of closed pores and relatively large water cement, which leads to early mold collapse and low strength of the product. The problem is that it is impossible to form an ideal structure and give full play to the advantages of foam concrete, which greatly limits its application in engineering; and the production of cement brings serious waste of resources and environmental pollution, which does not conform to the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B38/02C04B38/08C04B111/40C04B16/08
CPCC04B28/006C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/08C04B14/106C04B22/062C04B12/04C04B22/068C04B24/085C04B16/08C04B38/02Y02P40/10
Inventor 刘嫄春石锦言许慧杰熊天宇
Owner NORTHEAST AGRICULTURAL UNIVERSITY