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Preparation method of artificial sandstone plate

A technology of artificial sandstone and preparation steps, which is applied in the field of preparation of artificial sandstone slabs, can solve the problems of unsatisfactory thermal insulation performance, weak exterior wall decoration, high density, etc., and achieve reduced shrinkage, lower caustic ratio, and crystal seed The effect of decomposition inhibition

Inactive Publication Date: 2020-01-10
和致倍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main technical problem to be solved by the present invention is to provide an artificial sandstone board for the common defects of low product strength, unsatisfactory heat insulation performance, high density and easy to fall off when used for exterior wall decoration. preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of silicon-alumina reinforcing agent:

[0036] Put 700mL of sodium aluminate solution with a mass fraction of 20% into a plastic tank, and pass carbon dioxide gas into the plastic tank at a rate of 20mL / min for 40min. In the flat plate filter, filter and remove the filtrate to obtain the filter residue, put the filter residue in an oven, heat up to 90°C, and dry for 4 hours to obtain aluminum hydroxide powder;

[0037] Put the above-mentioned aluminum hydroxide powder in a high-pressure airflow machine, and crush it by airflow for 10 minutes to obtain superfine aluminum hydroxide powder with a particle size of 50 μm. Pour 200 g of superfine aluminum hydroxide powder into 500 mL of silicon Sodium acid solution to obtain a colloidal solution, which is placed in a high-speed disperser to disperse at a high speed of 3000r / min to obtain a silicon-aluminum reinforcing agent for subsequent use;

[0038] Preparation of organic foam particles:

[0039] In parts by ...

Embodiment 2

[0046] Preparation of silicon-alumina reinforcing agent:

[0047] Put 750mL of sodium aluminate solution with a mass fraction of 20% into a plastic tank, and pass carbon dioxide gas into the plastic tank at a rate of 25mL / min for 42min. Put it in a flat plate filter, filter and remove the filtrate to obtain the filter residue, put the filter residue in an oven, heat up to 95°C, and dry for 4.5 hours to obtain aluminum hydroxide powder;

[0048] Put the above-mentioned aluminum hydroxide powder in a high-pressure airflow machine, and crush it by airflow for 12 minutes to obtain superfine aluminum hydroxide powder with a particle size of 70 μm. Pour 210 g of superfine aluminum hydroxide powder into 520 mL of silicon Sodium acid sodium solution to obtain a colloidal solution, the colloidal solution is placed in a high-speed disperser to disperse at a high speed of 3100r / min to obtain a silicon-aluminum reinforcing agent, and set aside;

[0049] Preparation of organic foam partic...

Embodiment 3

[0057] Preparation of silicon-alumina reinforcing agent:

[0058] Put 800mL of sodium aluminate solution with a mass fraction of 20% into a plastic tank, and pass carbon dioxide gas into the plastic tank at a rate of 30mL / min for 45min. In a flat plate filter, filter and remove the filtrate to obtain a filter residue, place the filter residue in an oven, heat up to 100°C, and dry for 5 hours to obtain aluminum hydroxide powder;

[0059] Put the above-mentioned aluminum hydroxide powder in a high-pressure airflow machine, and pulverize it by airflow for 15 minutes to obtain ultrafine aluminum hydroxide powder with a particle size of 80 μm. Pour 220 g of ultrafine aluminum hydroxide powder into 550 mL of silicon Sodium acid sodium solution to obtain a colloidal solution, the colloidal solution is placed in a high-speed disperser to disperse at a high speed of 3300r / min to obtain a silicon-aluminum reinforcing agent for subsequent use;

[0060] Preparation of organic foam partic...

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Abstract

The invention discloses a preparation method of an artificial sandstone plate, and belongs to the technical field of preparation of building materials. The prepared artificial sandstone plate is prepared from self-made hollow raw material balls through bonding reinforcement of an organic binder and a silicon-aluminum reinforcing agent, and core-shell type organic foam particles are core-shell typeorganic foam particles with vinyl acetate resin as an inner layer, and are used for the hollow raw material balls, so that the artificial sandstone plate has good heat preservation and heat insulation performances. When carbonation decomposition of a sodium aluminate solution is carried out to prepare aluminum hydroxide, the caustic ratio of the solution is reduced, aluminum hydroxide seed crystal decomposition is inhibited, and the granularity of the aluminum hydroxide formed around is thinned to obtain high-fineness aluminum hydroxide powder, so that the contact area between the aluminum hydroxide powder and resin is increased, the interface bonding force between inorganic particles of the artificial sandstone plate and polymer resin is enhanced, and the bonding strength of organic resin in the sandstone plate is improved, thereby the sandstone plate with a low density and a high strength is obtained.

Description

technical field [0001] The invention discloses a method for preparing an artificial sandstone board, which belongs to the technical field of building material preparation. Background technique [0002] As a high-grade building decoration material, sandstone board is widely used in indoor and outdoor decoration design, curtain wall decoration and public facilities construction. At present, the common sandstone in the market is mainly divided into natural sandstone and artificial sandstone. Natural sandstone mainly includes Australian sandstone, Spanish sandstone, Indian sandstone and Chinese sandstone due to different origins. Artificial sandstone is also called imitation sandstone or composite sandstone. It is made by adjusting the color of natural colored quartz sand according to different ratios, adding environmental protection resin and curing agent and other ingredients, and pressing it by hand through a silicone mold. [0003] Sandstone is a kind of sedimentary rock, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/32C04B38/08C04B18/02C04B16/08C04B22/08C01F7/14C04B111/40C04B111/54
CPCC01F7/142C01P2004/61C04B16/082C04B18/027C04B22/00C04B26/32C04B2111/40C04B2111/542C04B2201/20C04B2201/32C04B2201/50C04B14/068C04B18/0427C04B14/104
Inventor 和致倍
Owner 和致倍
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