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A kind of preparation method of light-weight high-strength humidity control material

A humidity-conditioning material and high-strength technology, which is applied in the field of preparation of light-weight and high-strength humidity-conditioning materials, can solve problems such as the blank stage of perlite utilization, and achieve excellent humidity-conditioning performance, strong dehumidification ability, and improved humidity-conditioning performance. Effect

Active Publication Date: 2021-07-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, so far, the use of perlite in the field of humidity control materials is still in a blank stage.

Method used

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  • A kind of preparation method of light-weight high-strength humidity control material
  • A kind of preparation method of light-weight high-strength humidity control material
  • A kind of preparation method of light-weight high-strength humidity control material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] In this embodiment 1, the molding pressure is used as the main variable, and the influence of the molding pressure on the flexural strength and density of the light-weight, high-strength humidity-controlling material cured product is explored and analyzed. Perlite is firstly measured by mass percentage: calcium hydroxide=68%:32%, satisfying that the calcium-silicon ratio is 0.5, and calcium chloride is not used in this embodiment. Then measure the deionized water of 5-50% mass percent of the total weight of perlite and calcium hydroxide, mix it evenly, and press it under the FW-4 type desktop powder tablet press, the molding pressure is 10-30MPa, demoulding The final sample is put into a hydrothermal kettle for hydrothermal curing, the hydrothermal temperature is 200°C, and the hydrothermal time is 12h. The cured sample (40mm×15mm×6mm) was dried in an oven at 60°C for 24 hours to obtain a light-weight and high-strength humidity-adjusting material cured product, which wa...

Embodiment 2

[0031] In this embodiment, the calcium-silicon ratio is used as the main variable, and the influence of different silicon-calcium ratios on the flexural strength and density of the cured product is explored and analyzed. Weigh perlite and calcium hydroxide according to calcium-silicon ratio = 0.1-0.7, without using calcium chloride, then measure deionized water of 5-50% by mass of the total weight of perlite and calcium hydroxide, mix well Press and form under the FW-4 desktop powder tablet press, the forming pressure is 20MPa, and the sample after demoulding is put into a hydrothermal kettle for hydrothermal curing, the hydrothermal temperature is 200°C, and the hydrothermal time is 12h. The cured sample (40mm×15mm×6mm) was dried in an oven at 60°C for 24 hours to obtain a cured product, which was obtained after testing figure 2 The flexural strength-density change graph of cured products with different calcium-silicon ratios is shown.

[0032] from figure 2It can be seen...

Embodiment 3

[0036] In Example 3, the amount of water added was used as the main variable, and the influence of different amounts of water added on the flexural strength of the cured product was explored and analyzed. Weigh perlite and calcium hydroxide according to calcium-silicon ratio = 0.5, then measure deionized water of 5-50% by mass of the total weight of perlite and calcium hydroxide, mix it evenly and press Press molding under the tablet machine, the molding pressure is 20MPa, the demoulded sample is put into a hydrothermal kettle for hydrothermal curing, the hydrothermal temperature is 200°C, and the hydrothermal time is 12h. The cured sample (40mm×15mm×6mm) was dried in an oven at 60°C for 24 hours to obtain a cured product, which was obtained after testing Figure 5 The flexural strength-density change graph of cured products with different water additions is shown.

[0037] from Figure 5 It can be seen that as the amount of water added increases, the flexural strength of th...

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Abstract

The invention relates to a preparation method of a light-weight and high-strength humidity-regulating material, and belongs to the technical field of preparation of indoor functional decorative surface materials for buildings. First crush the perlite, pass through a 100-mesh sieve and dry; then measure the perlite and calcium hydroxide with the calcium-silicon ratio = 0.1-0.7, and then measure the perlite and calcium hydroxide: calcium chloride = 90%-100 %: 0% to 10%, and finally measure 10% to 50% of the total weight of water; after grinding and mixing the above-mentioned raw materials, press them into block samples under a molding pressure of 10 to 30 MPa and remove them. mold, under the condition of 100 ℃ ~ 220 ℃, carry out hydrothermal curing for 1 ~ 24 hours, and after drying, the block-shaped cured product is made into a lightweight high-strength humidity-adjusting material. The process of the invention is simple, and the density of the obtained product is less than 1g / cm 3 , as low as 0.85g / cm 3 , while the flexural strength can reach up to 20MPa, and the compressive strength can reach more than 100MPa. The automatic moisture absorption and desorption performance far exceeds the requirements of the national standard "JC / T 2082‑2011 Humidity Control Functional Interior Building Decoration Materials". The social and economic benefits are very obvious.

Description

technical field [0001] The invention relates to a preparation method of a light-weight and high-strength humidity-regulating material, and belongs to the technical field of preparation of indoor functional decorative surface materials for buildings. Background technique [0002] Perlite is a kind of acidic lava from volcanic eruption. It is a glassy rock formed by rapid cooling. It is named for its pearly crack structure. Perlite is mainly composed of acidic volcanic glass, 95% is glass phase, and 65% to 75% is amorphous quartz. Perlite is rich in reserves in my country. According to statistics, as of the end of 2015, 43 perlite mines have been proven in the country, and the proven resource reserves are about 3.9×108t. Among them, Henan Province has the largest resource reserves, accounting for about 26% of the total national resources. Others Provinces such as Shanxi and Inner Mongolia have more than 10 million tons of reserves. [0003] In addition, perlite has superior p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C04B40/00C04B40/02C04B111/40
CPCC04B28/10C04B2111/40C04B2201/20C04B14/18C04B40/0071C04B40/024
Inventor 景镇子裘鹏程
Owner TONGJI UNIV
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