Thermal insulation material with fire resistance and preparation method thereof

A technology of thermal insulation material and fire resistance, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as fire spread, toxic smoke and molten droplets, and superior performance cannot make up for hidden safety hazards.

Pending Publication Date: 2022-06-07
HENAN DACHENG CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic thermal insulation materials use benzene board, polyurethane board and rubber powder particles as the main raw materials, which make organic thermal insulation materials flammable. Once a fire occurs, organic thermal insulation materials will help the fire spread and produce a lot of toxic smoke during the combustion process. gas and droplets
Because the flammability of organic materials is its insurmountable shortcoming, and its superior performance in other aspects cannot make up for its potential safety hazards

Method used

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  • Thermal insulation material with fire resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: PVA-SiO 2 Preparation of the adhesive

[0018] PVA-SiO 2 The preparation method of the adhesive is: . Dissolve PVA in water to prepare a PVA solution with a volume fraction of 12%; .The Na 2 SiO 3 Add water to dissolve, and use citric acid to dissolve Na 2 SiO 3 The pH of the solution was adjusted to 11; PVA and Na 2 SiO 3 The weight ratio is 4:1; .The pH of 11 Na 2 SiO 3 The solution was added dropwise to the PVA solution at 60 °C, Na 2 SiO 3 The volume ratio of the solution to the PVA solution is 1:1. Stir while adding dropwise. After the dropwise addition is completed, continue stirring for 40 min until the pH value of the final mixed solution is 7, and then PVA-SiO can be obtained. 2 adhesive.

Embodiment 2

[0019] Example 2: PVA-SiO 2 Preparation of the adhesive

[0020] PVA-SiO 2 The preparation method of the adhesive is: . Dissolve PVA in water to prepare a PVA solution with a volume fraction of 12%; .The Na 2 SiO 3 Add water to dissolve, and use citric acid to dissolve Na 2 SiO 3 The pH of the solution was adjusted to 11; PVA and Na 2 SiO 3 The weight ratio is 5:1; .The pH of 11 Na 2 SiO 3 The solution was added dropwise to the PVA solution at 60 °C, Na 2 SiO 3 The volume ratio of the solution to the PVA solution is 1:1. Stir while adding dropwise. After the dropwise addition is completed, continue stirring for 50 min until the pH value of the final mixed solution is 9, and then PVA-SiO can be obtained. 2 adhesive.

Embodiment 3

[0021] Example 3: PVA-SiO 2 Preparation of the adhesive

[0022] PVA-SiO 2 The preparation method of the adhesive is: . Dissolve PVA in water to prepare a PVA solution with a volume fraction of 12%; .The Na 2 SiO 3 Add water to dissolve, and use citric acid to dissolve Na 2 SiO 3 The pH of the solution was adjusted to 11; PVA and Na 2 SiO 3 The weight ratio is 4.5:1; .The pH of 11 Na 2 SiO 3 The solution was added dropwise to the PVA solution at 60 °C, Na 2 SiO 3 The volume ratio of the solution to the PVA solution is 1:1. Stir while adding dropwise. After the dropwise addition is completed, continue stirring for 45 min until the pH value of the final mixed solution is 8, and then PVA-SiO can be obtained. 2 adhesive.

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a preparation method of a thermal insulation material with fire resistance, which comprises the following steps: (1) fiber dispersion: dispersing fly ash/coal gangue fibers in water, putting the uniformly dispersed fly ash/coal gangue fibers in a mold, and carrying out suction filtration to remove redundant water to prepare a fiberboard; (2) fiber glue coating is conducted, specifically, at a certain glue coating temperature, a PVA-SiO2 adhesive diluent is poured into a mold, and the fiberboard is completely soaked in the PVA-SiO2 adhesive diluent; (3) glue removal of the fiberboard: taking out the fiberboard soaked for a certain time, and carrying out suction filtration to remove redundant PVA-SiO2 adhesive diluent; and (4) fiber drying: drying the degummed fiberboard under a natural ventilation condition to obtain the thermal insulation material. The invention also comprises the thermal insulation material prepared by the method. The thermal insulation material prepared by the invention has good fire resistance and thermal insulation performance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and particularly relates to a thermal insulation material with fire resistance and a preparation method thereof. Background technique [0002] With the implementation of the new policy of building energy-saving standards, building thermal insulation materials and thermal insulation technology have developed rapidly. Because organic thermal insulation materials have many advantages such as good thermal insulation performance, low cost, light weight, and convenient construction, they are currently the most widely used thermal insulation materials. However, the organic thermal insulation material uses benzene board, polyurethane board and rubber powder particles as the main raw materials, which makes the organic thermal insulation material flammable. Once a fire occurs, the organic thermal insulation material will help the fire spread, and a large amount of toxic smoke will also be genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/24C04B111/28
CPCC04B28/24C04B2111/28C04B2201/32C04B24/2623C04B14/46Y02W30/91
Inventor 王晓帅蔡玥马富刘惠张小帅张涛郭志富张广亮张永利
Owner HENAN DACHENG CONSTR ENG
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