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Preparation method of ultralight hierarchical-array-pore foam material

A foam material and array hole technology, which is applied in the field of preparation of ultra-light graded array cell foam materials, can solve the problems of demanding melting point range, high technical difficulty, easy aging and degradation, etc. The effect of a wide range of raw materials

Inactive Publication Date: 2014-08-27
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the foaming under high temperature conditions, the requirements for the melting point range of raw materials are strict, which requires high purity and precise compatibility of raw materials, so the technical difficulty is relatively high. At present, there is no large-scale production of foamed ceramics and foamed glass materials using industrial solid waste. case
The third method of foaming at room temperature and sintering at high temperature, the biggest problem is that the foam is unstable and will collapse severely during the drying process, which will affect the bulk density and porosity of the fired product.
It is not resistant to high temperature, easy to absorb water, and easy to age and degrade, failing to achieve the goal of using industrial waste in large quantities

Method used

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  • Preparation method of ultralight hierarchical-array-pore foam material
  • Preparation method of ultralight hierarchical-array-pore foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Step 1 Preparation and Grinding

[0040] After the tailings discharged from the copper ore concentrator are ground and pulverized (the chemical composition is (ω%): SiO 2 44.05, Al 2 o 3 8.32, CaO17.77, MgO12.22, Fe 2 o 3 10.76, K 2 O1.12, Na 2 O0.99, other ingredients are trace. ), get it as 80% of the total weight, and quartz 2%, feldspar 2%, fluorite 6%, clay 2%, borax 5%, sodium carbonate 3% (the stated percentages are the percentage of total weight , The following examples are the same), and the sum of each component together with the copper tailings powder is 100% in total. Grind again with a high-energy ball mill to make more than 96% of the mixed powder with a particle size smaller than 0.034mm;

[0041] Step 2 Mineral powder infiltration

[0042] Mix the mineral powder in step 1, add a wetting solution of sodium dodecylbenzenesulfonate with a concentration of 15% by mass, stir it and place it for 4 hours, and keep the mass (g) of the mixed mineral powd...

Embodiment 2

[0050] Step 1 Preparation and Grinding

[0051] After grinding and pulverizing the tailings formed during iron ore development and beneficiation (the chemical composition is (ω%): SiO 2 30.09, Al 2 o 3 11.73, CaO5.64, MgO4.33, Fe 2 o 3 28.02, K 2 O0.55, Na 2 O1.78, traces of other ingredients. ), taking it as 50% of the total weight, and then adding a component regulator, wherein 15% of quartz, 8% of feldspar, 5% of fluorite, 5% of limestone, 5% of clay, 5% of borax, 7% of sodium carbonate, each The sum of the ingredients together with the tailings powder adds up to 100%. Grind again with a high-energy ball mill to make more than 96% of the mixed mineral powder with a particle size of less than 0.034mm;

[0052] Step 2 Mineral powder infiltration

[0053] Mix the powder in step 1, add the wetting solution containing sodium dodecylsulfonate with a concentration of 3% by mass, stir it and leave it for 3 hours, and keep the mass (g) of the mixed mineral powder and wettin...

Embodiment 3

[0059] Step 1 Preparation and Grinding

[0060] After grinding the tailings formed during gold mine development (its chemical composition is (ω%): SiO 2 66.39, Al 2 o 3 4.97, CaO4.92, MgO3.54, Fe 2 o 3 14.63,K 2 O1.58, Na 2 O0.81, trace amounts of other components. ), which is taken as 70% of the total weight, mixed with 10% feldspar, 1% fluorite, 6% clay, 4% borax, 5% dolomite, 4% sodium carbonate, each component is added together with gold tailings powder Add up to 100%. Grind again with a high-energy ball mill to make a mixed powder with more than 96% of the particle size smaller than 0.034mm.

[0061] Step 2 Mineral powder infiltration

[0062] Mix the mineral powder in step 1, add a mixed wetting solution composed of 2.5% sodium dodecylbenzenesulfonate and 2.5% sodium cetylsulfonate in mass percent concentration, stir well and place it for 5h, keep The mass (g): volume (ml) ratio of the mixed mineral powder to the wetting solution is 1:0.15.

[0063] Step 3 foa...

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Abstract

The invention relates to a preparation method of an ultralight hierarchical-array-pore foam material, which comprises the following steps: grinding various industrial solid wastes used as main raw materials with a component regulator, and prefabricating a hierarchical porous structure foam matrix in the required shape by combining a soaking-piling self-assembly technique under the synergetic effects of the special dispersing agent, template, film forming agent, adhesive, accessory pore agent and the like; and sintering to cure the foam matrix under specific sintering schedules to form the ultralight hierarchical-array-pore foam material. The material prepared by the method can be used as an adsorbing and fixing medium for pollutants and gaseous pollutants in various water sources, a catalyst support, a thermal-insulation material and the like, has the characteristics of simple preparation technique and wide raw material sources, and can implement large-scale production.

Description

technical field [0001] The technical solution of the present invention relates to the preparation and application of an ultra-light graded porous foam material, which can be used as an adsorption and fixation medium for water and gas pollutants, a catalyst carrier, a thermal insulation material, and a sound-absorbing and noise-reducing material. It has the characteristics of simple preparation process, wide source of raw materials and large-scale production. Background technique [0002] Hierarchical array pore material is a porous material in which evenly arranged large pores are nested with many dense small pores, and the small pores contain many nanoscale micropores. It has the characteristics of large pore volume and high apparent porosity. The ultra-light graded cell array foam material has a small bulk density and a higher apparent porosity, which is similar to the characteristics of organic polymer foam materials, such as polyurethane foam. [0003] Traditional artif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06
Inventor 汤庆国王娟梁金生段昕辉刘晓冬关雪阳
Owner HEBEI UNIV OF TECH
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