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Composite modified reinforced aging-resistant tungsten-tailing-containing ecological-sand-based water-permeable brick and preparation method thereof

A technology of composite modification and permeable bricks, which is applied in the field of building materials and can solve the problem of high cost of sand-based permeable bricks

Inactive Publication Date: 2020-02-28
江西省建筑材料工业科学研究设计院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another object of the present invention is to provide a method for preparing the ecological sand-based permeable bricks containing tungsten tailings, which can solve the problem of high cost of preparing sand-based permeable bricks in the southern region, and at the same time realize a large amount of resource utilization of tungsten tailings use

Method used

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  • Composite modified reinforced aging-resistant tungsten-tailing-containing ecological-sand-based water-permeable brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare a film-modified tungsten tailings, the steps are as follows:

[0039] Take solid waste tungsten tailings, in which SiO 2 The content is greater than 85%, washed and dried, and passed through a 40-70 mesh sieve;

[0040] Put the dried and screened tungsten tailings into the sand mixer and heat to 180°C, add BASF styrene-acrylic resin 671 with 1.75% mass of tungsten tailings and stir fry for 80s, when the sand temperature drops to 110°C, add resin mass 0.6% silane coupling agent, stir for 10s, add 0.75% of tungsten tailings mass of Cytec CYMEL325 methyl etherified high imino cyanamide resin curing agent, stir for 60s, add 3% of resin mass of calcium stearate, stir Cool after 60s, crush and sieve to obtain film-coated modified tungsten tailings I.

Embodiment 2

[0042] Prepare a film-modified tungsten tailings, the steps are as follows:

[0043] Take solid waste tungsten tailings, in which SiO 2 The content is greater than 85%, washed and dried, and passed through a 40-70 mesh sieve;

[0044] Add the dried and screened tungsten tailings into the sand mixer and heat to 210°C, add BASF styrene-acrylic resin 671 with 1.05% mass of tungsten tailings and stir fry for 100s, when the sand temperature drops to 120°C, add resin mass 1.2% silane coupling agent, stir for 20s, add 0.45% tungsten tailings mass of Cytec CYMEL325 methyl etherified high imino cyanamide resin curing agent, stir for 120s, add 5% calcium stearate, stir for 180s Cooling, crushing and sieving to obtain film-coated modified tungsten tailings II.

Embodiment 3

[0046] To prepare an ecological sand-based permeable brick containing tungsten tailings, the steps are as follows:

[0047] First add 300kg of solvent-free e51 epoxy resin into the concrete forced mixer. While stirring, add 15.2kg of limestone powder and 11.4kg of nano-SiO 2 , 1.14kg of light stabilizer (770), 0.38kg of UV absorber and 19kg of silane coupling agent, continue to stir for 180s, carry out compound modification, then add 80kg of epoxy resin curing agent, stir for 90s, and finally add 10251kg of After the film-coated tungsten tailings I prepared in Example 1 were stirred for 90 s, they were uniformly distributed in the mold, and pressed for 5 s under a pressure of 20 MPa using a vibration forming press to obtain the sand-based permeable brick I.

[0048] In terms of mass percentage, the content of each component in the ecological sand-based permeable brick containing tungsten tailings prepared in this example is as follows: film-coated modified tungsten tailings I ...

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Abstract

The invention provides a tungsten-tailing-containing ecological-sand-based water-permeable brick. The tungsten-tailing-containing ecological-sand-based water-permeable brick is composed of the following components in percentages by weight: 96 to 97% of film-coated modified tungsten tailings, 2.4 to 3.2% of composite modified epoxy resin and 0.6 to 0.8% of an epoxy resin curing agent, wherein the film-coated modified tungsten tailings are obtained by film-coating modification of tungsten tailing siliceous aggregate through resin; and the composite modified epoxy resin is obtained by compoundingand doping modification of epoxy resin and compounding modification components comprising an organic surface modifier, inorganic powder and nanometer ultrafine oxide. The invention also provides a method for preparing the tungsten-tailing-containing ecological-sand-based water-permeable brick. The water-permeable brick provided by the invention has the advantages of low resin usage amount, high strength, excellent wear resistance and aging resistance and the like. The preparation method provided by the invention can solve the problem of high preparation cost of a sand-based water-permeable brick in a southern area, and can realize large-scale resource utilization of tungsten tailings at the same time.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a permeable brick, especially an ecological sand-based permeable brick with tungsten tailings, and a preparation method thereof. Background technique [0002] "Sponge city" can also be called "water elastic city", which refers to the urban construction system that absorbs, stores, infiltrates, and purifies water when it rains, and releases and utilizes the stored water when needed. Rainwater moves freely in the city. The construction of water ecological infrastructure is the core of the construction of "sponge city". Therefore, new environmental protection materials used in the construction of "sponge city" infrastructure have become a current research hotspot. [0003] Resin sand-based permeable brick is an important new green and environmentally friendly material for the construction of sponge cities. It is a new type of sponge building material with long water permeability a...

Claims

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Application Information

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IPC IPC(8): C04B26/14C04B20/10C04B38/00C04B40/00C04B111/20C04B111/40
CPCC04B20/1037C04B26/14C04B2111/00017C04B2111/00284C04B2111/20C04B2111/2038C04B2111/40C04B2201/50C04B18/12C04B20/1033C04B20/1025C04B20/1018C04B14/28C04B14/062C04B24/42C04B2103/605C04B2103/60C04B2103/0068C04B40/0071C04B38/0038
Inventor 姜建松张建强习海平柴天红刘桂平马友德石齐蔡恒袖曾亮揭晓东
Owner 江西省建筑材料工业科学研究设计院
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