Coral sand permeable material and preparation method thereof
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A water-permeable material, coral sand technology, applied in the field of composite materials, can solve the problems of low temperature resistance, salt spray resistance, poor water resistance, high hygroscopicity, etc., and achieve the effect of good water permeability, large porosity, and high edge angle
Active Publication Date: 2020-12-25
BEIJING RECHSAND SCI & TECH GRP
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to overcome the problems of high hygroscopicity, poor water resistance, high temperature resistance and salt spray resistanc
Method used
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Embodiment 1
[0032] The coral sand permeable material provided in this embodiment includes 100 g of coral sand particles with a particle size ranging from 50 to 200 mesh, 20 g of cement, 5 g of hydrophilic epoxy resin, 2 g of dopamine, and 8 g of silica gel adhesive.
[0033] The preparation method is as follows: screen coral sand particles, collect 100g of coral sand particles in the range of 50-200 meshes, 2g of dopamine, mix with 20g of cement and an appropriate amount of water, add 5g of hydrophilic epoxy resin and corresponding curing agent, and stir After mixing evenly, add 8g of silicone adhesive, mix evenly and solidify.
Embodiment 2
[0035] The coral sand permeable material provided in this embodiment includes 100 g of coral sand particles with a particle size ranging from 50 to 200 meshes, 20 g of styrene-acrylic emulsion, 3 g of hydrophilic epoxy resin, 2 g of dopamine, 1 g of EDTA and 8 g of silica gel adhesive.
[0036] The preparation method is as follows: screen the coral sand particles, collect 100g of coral sand particles in the range of 50-200 meshes, 1g of EDTA, mix with 20g of styrene-acrylic emulsion, add 3g of hydrophilic epoxy resin and corresponding curing agent, and stir until the mixture is uniform , and then add 8g of silica gel adhesive to cure.
Embodiment 3
[0038] The coral sand permeable material provided in this embodiment includes 100 g of coral sand particles with a particle size ranging from 50 to 200 mesh, 15 g of kaolin, 3 g of polyurethane resin, 4 g of EDTA, and 11 g of cyanoacrylate adhesive.
[0039] The preparation method is as follows: screen the coral sand particles, collect 100g of coral sand particles in the range of 50-200 meshes, mix them with 15g of kaolin and 4g of EDTA, and then add 3g of polyurethane resin and corresponding curing agent, stir until they are evenly mixed, and then add Cyanoacrylate 11g, cured.
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Abstract
The invention belongs to the field of composite materials, and particularly relates to a coral sand permeable material and a preparation method thereof. Coral sand is generated by long-term evolutionof marine microorganisms, belongs to biochemical sedimentary rock, is completely different from desert silica sand used for preparing permeable ecological sand in the prior art in material, and has the characteristics of poor sphericity, high angularity, large porosity and the like; and the coral sand building block cannot be prepared by adopting the conventional technical means to achieve the ideal performance effect. The coral sand particles, the filler, the laminating agent, the additive and the adhesive in a specific ratio are used, and the particle size of the coral sand particles is limited to be 50-200 meshes so that the water-permeable and salt mist-resistant coral sand building block is obtained. The filler can be selected from one or more of cement, styrene-acrylic emulsion, silicone acrylic emulsion, kaolin and rosin. The most preferable filling agent is a mixed filling agent of kaolin and rosin, and when the filling agent is selected, the compression resistance of the obtained coral sand permeable material can be optimal.
Description
technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a coral sand permeable material and a preparation method thereof. Background technique [0002] Remote islands and reefs are located in tropical areas, coral reefs and sandy islands, short of fresh water, and far away from the land. The primary problem of building various engineering facilities on islands and reefs is the lack of building materials such as gravel and river sand, and fresh water for construction is also very scarce; if These materials are transported from land, which not only prolongs the construction period, but also has high transportation costs, and may also be limited by natural conditions such as wind and waves; Ideal material for island construction. [0003] There have been many reports on the foundation backfilling of the yard behind the wharf, and have achieved great technical and economic effects. However, the special geographical location...
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