A high-pressure-resistant water-permeable porous material and a preparation method thereof

A technology of porous materials and water permeability, applied in the field of porous materials, can solve the problems of poor high pressure resistance, difficult control of porosity, difficult molding mold materials, etc., to maintain air permeability, water permeability and strength, improve fluidity and dispersibility , the effect of high strength and toughness

Active Publication Date: 2014-07-09
中科检测技术服务(嘉兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the mechanical strength, heat resistance, and chemical corrosion resistance of ceramic pressure grouting molds made of epoxy resin-based micro-porous permeable materials are low, and the flexural strength is generally below 10MPa. (See Chinese Patent Application No. 98117513.9 "A Resin Mold Material", 200910166349.1 "A Weather-Resistant Water-Permeable Material and Its Use"), poor high pressure resistance
The literature (Chinese patent application number 201210476739.0 "a composite water-permeable material, its manufacturing method and derivative products") introduces chemical materials such as PE, PVC or PP as the main material, and fillers and release agents with nano-scale pores. and a plasticizer as a porogen to form a water-permeable material with an interconnected microporous structure; the document (Chinese Patent Application No. 200810045396.6 "Method for preparing open-cell microporous plastic profiles by semi-melt extrusion") adjusts the powder Particle size, additives, and molding process conditions are controlled to obtain open-cell microporous plastic products; the literature (Chinese Patent Application No. 200810120988.X "Microporous Plastic Filter Element and Its Preparation Method") uses polyethylene or polypropylene or their Mixtu...

Method used

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  • A high-pressure-resistant water-permeable porous material and a preparation method thereof
  • A high-pressure-resistant water-permeable porous material and a preparation method thereof
  • A high-pressure-resistant water-permeable porous material and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the silanization wet treatment of inorganic filler

[0052] First, place various inorganic fillers for experiments in an oven at 120°C for 5 hours to keep warm and dry, take 1000g each after cooling, pour them into a 5L three-necked flask equipped with a reflux cooling device, and then add 1000g of 5wt% 3-formazol Acryloyloxypropyltrimethoxysilane (KH570) No. 120 solvent gasoline solution and 0.3g of dibutyltin dilaurate, heated to 60 ° C under reflux and stirred for 8 hours, cooled to room temperature, then filtered, and the powder was naturally Drying to obtain the surface-treated inorganic filler of silane KH570; the inorganic filler is aluminum oxide, magnesium oxide, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, titanium dioxide, magnesium carbonate, lithium magnesium silicate, magnesium aluminum silicate , borax, dolomite, gypsum, barite, talc, kaolin, wollastonite or glass powder.

[0053] The inorganic filler surface-treated with vin...

Embodiment 2

[0054] Example 2: Wet treatment of silanization of organic fillers with small particle size

[0055] In a 5L three-neck flask equipped with a reflux cooling device, add 1000g of small particle size organic filler, and then add 1000g of 5wt% 3-methacryloxypropyltrimethoxysilane (KH570) No. 120 solvent gasoline solution and 0.3g of dibutyltin dilaurate, heated to 60°C under reflux and stirred for 8 hours, cooled to room temperature, then filtered, and the powder was naturally dried to obtain a small particle size organic filler treated with silane KH570 surface; the organic filler It is polymethyl methacrylate PMMA, polyoxymethylene POM or polycarbonate PC.

[0056] The small-particle size organic fillers treated with vinyltrimethoxysilane are also carried out according to the above method.

[0057] Examples 3-12 were carried out according to the formula and curing temperature in Table 1.

[0058] Table 1: Example composition (1000 parts in total (except aggregate)):

[0059]...

Embodiment 3

[0061] At room temperature at 5°C, mix 400g of water, 300g of silane KH570 surface-treated magnesium oxide (average particle size 50μm) and KH570 surface-treated aluminum hydroxide (average particle size 3μm) 70g (stirring speed is 200 rpm, stirring The time is 10min) to obtain the water-containing component; add 100g styrene, 50g ethylene glycol maleate, 50g methyl acrylate, 10g dilauroyl peroxide (LPO), 5g N,N-di Methylaniline (DMA) and 15g polyether L64 (polyoxyethylene content 40wt%), at 5 ℃, stir and mix evenly (stirring speed is 200 rpm, stirring time is 5min), to obtain the premixed liquid (oil-containing group minute); then, under rapid stirring (stirring speed is 1000 rev / min), add the water-containing component into the container containing the premix liquid, and stir evenly (stirring time is 2min) to obtain a mixed slurry; after mixing evenly, quickly Pour the mixed slurry into the corresponding hollow mold, let it stand at room temperature for curing at 5°C, observ...

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Abstract

The invention belongs to the field of porous materials and discloses a high-pressure-resistant water-permeable porous material and a preparation method thereof. The porous material comprises following five components: a vinyl monomer, an oxidation-reduction initiator, a surfactant, water, and a powder filling material subjected to surface treatment with silane, or comprises the five components and aggregate. The porous material is prepared by injecting a slurry mixture formed by the five components or a uniform mixture of the slurry mixture and a large-diameter organic filling material into a mould, or injecting the slurry mixture or the mixture of the slurry mixture and the large-diameter organic filling material into a mould of a macroporous three-dimensional mesh material, curing and moulding. The cured and moulded porous material has excellent gas permeability, water permeability and high-pressure resistance. The compressive strength of the porous material is higher than 33 MPa. The bending strength of the porous material is higher than 14 MPa, and the porosity (open pores) is higher than 20%. The porous material can be repeatedly used for a plurality of times. The porous material can be used for manufacturing ceramic high-pressure slip casting moulds and used in the field of building materials and the field of water filtration and purification, and the like.

Description

technical field [0001] The invention belongs to the field of porous materials, and in particular relates to a high-pressure-resistant water-permeable material and a preparation method thereof. Background technique [0002] In the ceramic industry, high-pressure grouting (pressure up to 4MPa) has the advantages of short cycle, high efficiency, good body quality, no need for trimming, high strength, no drying, high surface finish, continuous grouting, high level of mechanization and automation, The production line occupies a small area, has a good operating environment, and has less environmental waste. It can not only greatly improve product quality, grade, and production efficiency, but also greatly reduce labor costs, labor intensity, and save labor places, reduce environmental pollution, and high-pressure Grouting has been widely used in the United States, Germany, Japan, Italy and other developed countries. They have obtained huge economic and social benefits. It can be u...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F222/14C08F220/14C08F220/18C08F220/28C08F220/06C08F4/40C08J9/28C08K9/06
Inventor 黄月文王斌
Owner 中科检测技术服务(嘉兴)有限公司
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