Coral sand breathable impermeable sand

A technology of coral sand and anti-seepage sand, applied in the field of composite materials, can solve problems such as inability to make full use of coral sand resources, and achieve the effect of solving the problem of the source of vegetables and fruits, and solving the problem of fresh water drinking and drinking.

Inactive Publication Date: 2021-02-05
BEIJING RECHSAND SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiency that the prior

Method used

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  • Coral sand breathable impermeable sand

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preparation example Construction

[0031] In the preparation process of coral sand air-permeable and anti-seepage sand of the present invention, it is preferable to mix the coral sand particles with the ethanol solution / ethanol dispersion of the filler and then dry them, and then add the coating agent after ball milling, so as to effectively remove the coral sand surface. Loose and unstable parts can improve the single particle strength of coral sand; more preferably, ball milling pretreatment is performed on coral sand before filling and mixing, which can better improve the sphericity of coral sand and remove coral sand at the same time Parts that are loose and not firm on the surface.

[0032] The coral sand air-permeable and anti-seepage sand described in the present invention can be in the form of loose sand, which is convenient for later pavement to adapt to various places with anti-permeation gas requirements, and can also be directly molded and solidified to form air-permeable and anti-seepage bricks, etc...

Embodiment 1

[0034] The coral sand breathable and anti-seepage sand provided in this embodiment includes 100 g of coral sand particles with a particle size in the range of 50 to 200 mesh, 20 g of cement, 5 g of hydrophobic epoxy resin, and 8 g of silica gel adhesive.

[0035] The preparation method is as follows: screen coral sand particles, collect 100g of coral sand particles in the range of 50-200 meshes, mix with 20g of cement and an appropriate amount of water, add 5g of hydrophobic epoxy resin and corresponding curing agent, stir until the mixture is uniform, Then add 8g of silicone adhesive, mix well and cure.

Embodiment 2

[0037]The coral sand air-permeable and anti-seepage sand provided in this embodiment includes 100g of coral sand particles with a particle size in the range of 50-200 meshes, 20g of styrene-acrylic emulsion, 0.2g of sodium carboxymethyl cellulose, 0.05g of polyvinyl alcohol, hydrophobic 3g of epoxy resin and 8g of silicone adhesive.

[0038] The preparation method is as follows: screen coral sand particles, collect 100g of coral sand particles in the range of 50-200 mesh, mix with 20g of styrene-acrylic emulsion, 0.2g of sodium carboxymethyl cellulose, and 0.05g of polyvinyl alcohol, and add hydrophobic ring Mix 3g of epoxy resin and corresponding curing agent until evenly mixed, then add 8g of silicone adhesive to cure.

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Abstract

The invention belongs to the field of composite materials, and particularly relates to coral sand breathable impermeable sand and a preparation method thereof. Coral sand is generated by long-term evolution of marine microorganisms, belongs to biochemical sedimentary rock, and is completely different from desert silica sand used for preparing breathable impermeable sand in the prior art, and a precedent for successfully preparing the breathable impermeable material from the coral sand does not exist in the prior art. According to the invention, coral sand particles, a filler, a laminating agent and an adhesive are mixed according to a specific ratio, and the particle size of the coral sand particles is limited to be 50 to 200 meshes, so that the coral sand breathable impermeable sand withbreathable impermeable effects is obtained. And the filler can be selected from one or more of cement, styrene-acrylic emulsion, silicone acrylic emulsion, kaolin and rosin. The most preferable filleris a mixed filler of kaolin and rosin, and when the filler is selected, the air permeability and the water resistance of the obtained coral sand breathable impermeable sand can be optimal.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to coral sand breathable anti-seepage sand and a preparation method thereof. Background technique [0002] There are many remote islands and reefs far away from the land in our country. These islands and reefs are short of fresh water, far away from the land, and are often located in tropical regions. The water evaporates very quickly, making it extremely difficult to store fresh water on the islands and reefs. Resources such as self-produced food, vegetables and fruits cannot meet the living needs of the stationed personnel, and the transportation costs are high, and may be limited by natural conditions such as wind and waves. Therefore, people have been exploring how to effectively store fresh water. Most of these islands and reefs are coral islands and reefs. If local materials can be obtained, coral reef sand resources can be fully utilized to construct water stora...

Claims

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Application Information

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IPC IPC(8): C04B28/24C04B28/00C04B26/06C04B26/04C04B26/22C04B26/28C04B26/32C04B18/02C04B26/14A01G24/12A01G31/00
CPCA01G31/00A01G24/12C04B18/021C04B18/022C04B26/04C04B26/06C04B26/14C04B26/22C04B26/28C04B26/285C04B26/32C04B28/00C04B28/24C04B2111/00293C04B14/28C04B22/002C04B24/281C04B2103/0068C04B24/282
Inventor 秦升益谢思桃
Owner BEIJING RECHSAND SCI & TECH GRP
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