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Mullite polycrystalline fibre reinforced foam glass

A technology of foam glass and fiber reinforcement, applied in the field of mullite polycrystalline fiber reinforced foam glass material and its preparation, can solve the problems of low product strength, limited application, high volume density, etc., and achieve small volume density and large market Foreground, effect of high mechanical strength

Inactive Publication Date: 2014-12-03
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for industrial production, this temperature is too high
When the preparation method of combining soda-calcium-silica waste glass material with high-silicon glass fiber is used, the volume density of the obtained product is obviously higher, but the strength of the product is not high, which limits its application as a light wall and other materials.

Method used

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  • Mullite polycrystalline fibre reinforced foam glass
  • Mullite polycrystalline fibre reinforced foam glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] With an electronic balance, according to the raw material composition and its mass percentage: 54-63% SiO 2 , 4~6%Al 2 o 3 , 12~18%B 2 o 3 , 12~20%Na 2 O, 4~6%K 2 O; on this basis, the additional mass percentage is 0.5-5.5% foaming agent, 2-6% mullite polycrystalline fiber, 0.5-2% foam stabilizer; the foaming agent is dextrin, graphite or carbonic acid Calcium; the foam stabilizer is Na 2 HPO 4 or K 3 PO 4 ; The specific proportioning of each embodiment is shown in Table 1. Add the above raw materials together into the ball mill pot and mill for 5 hours to obtain a powder with extremely fine particles. After passing the powder through a 160-mesh sieve, fill it in a graphite crucible. Do not overfill it, and vibrate on a vibrating table for molding . After molding, send the graphite crucible with batch materials into the resistance furnace, and fire at 850°C according to the above-mentioned heating system. The obtained sample has regular pore shape, uniform p...

Embodiment 2—— Embodiment 5

[0025] Compared with Example 1, the preparation method of Examples 2-5 is basically the same as that of Example 1 except that the ratio of each component in the basic batch and the composition and content of foaming agent and foam stabilizer are changed.

[0026] After the performance test of the products obtained in each embodiment, the performance indexes are shown in Table 2.

[0027] Table 1

[0028]

[0029] Table 2

[0030]

[0031] The prepared mullite polycrystalline fiber reinforced foam glass material meets the current national quality standards through inspection.

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Abstract

Mullite polycrystalline fibre reinforced foam glass is disclosed. Raw materials of the foam glass comprise following components by mass: 54-63% of SiO2, 4-6% of Al2O3, 12-18% of B2O3, 12-20% of Na2O, 4-6% of K2O, 0.5-5.5% of a foaming agent, 2-6% of mullite polycrystalline fibre, and 0.5-2% of a foam stabilizer. The foaming agent is dextrin, graphite or calcium carbonate. The foam stabilizer is Na2HPO4 or K3PO4. The foam glass is prepared by a powder sintering method and is sintered in an air atmosphere having a temperature of 850 DEG C. The foam glass has high mechanical strength, high compressive strength, high bending strength and small volume density, and can be widely applied in the field of superaqueous landscape aerosol carriers that are green and stable in performance, the field of thermal insulation and damp proofness of wall buildings, and other fields.

Description

technical field [0001] The invention relates to an inorganic non-metallic material, in particular to a mullite polycrystalline fiber reinforced foam glass material and a preparation method thereof. Background technique [0002] Foam glass is an inorganic non-metallic material widely used in the market today. It has low thermal conductivity and thermal expansion coefficient, and has good wave-absorbing properties, moisture-proof and corrosion-proof properties. When industrial materials are used to prepare foam glass, the main component is industrial SiO 2 , boric acid and soda ash, etc., the production cost is not high, and its products are light in weight, easy to shape, stable in performance, green and non-toxic, and are a kind of environmentally friendly materials with great application prospects. [0003] At present, most of the raw materials for producing foam glass on the market are cullet and industrial waste, but these raw materials have unstable chemical composition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C11/00
Inventor 李志宏钟颖朱玉梅王秀朵赵乐军潘留明
Owner TIANJIN UNIV