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Plastic patching material and preparation method

A technology of repairing material and main material, applied in the field of plastic repairing material and its preparation, can solve the problem of large amount of fine powder, etc., and achieve the effects of excellent construction performance, reduced production cost, and strong adhesion at room temperature

Active Publication Date: 2014-01-29
北京钢研新冶工程技术中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But amorphous Al 2 o 3 The amount of fine powder is relatively large, and at the same time, amorphous Al 2 o 3 When the fine powder is used as a plasticizer for plastic repair materials, an important technical index, adhesion performance, is not mentioned in the patent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In terms of weight percentage, 55% of alumina with a particle size of 3-0.074mm, 25% of mullite with a particle size of 2 o 3 Powder 18%, EVA rubber powder 2%, after mixing evenly, add sodium tripolyphosphate 0.8%, add oxalic acid 2%, add phosphoric acid solution 6%, mix and knead evenly to get plastic repair material.

[0029] Among them, EVA rubber powder (Ethylene-vinyl acetate) is a vinyl acetate / ethylene copolymer, which is made by copolymerizing vinyl acetate and ethylene.

Embodiment 2

[0031] In terms of weight percentage, 60% of mullite with a particle size of 3-0.074mm, 17% of alumina with a particle size of 2 o 3 Powder 20%, EVA rubber powder 3%, after mixing evenly, add sodium hexametaphosphate 0.8%, sodium tripolyphosphate 0.3%, add citric acid 3%, add aluminum dihydrogen phosphate solution 8%, mix evenly to get plastic repair material.

Embodiment 3

[0033] In terms of weight percentage, 65% of fused corundum with a particle size of 3-0.074mm, 15% of fused corundum with a particle size of 2 o 3 Powder 16%, EVA powder 4%, after mixing evenly, add sodium polyacrylate 0.5%, sodium tripolyphosphate 0.4%, sodium hexametaphosphate 0.3%, add oxalic acid 1%, molasses 1.5%, add phosphoric acid solution 5.5% And 4.5% aluminum dihydrogen phosphate solution, kneading evenly to obtain a plastic repair material.

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Abstract

The invention belongs to the field of amorphous refractory materials and particularly relates to a plastic patching material and a preparation method. The plastic patching material comprises major ingredients and additives. The major ingredients comprise the following components in percent by weight: 55-65 percent of high alumina or alumina particles with grain size being 3-0.074mm, 15-25 percent of high alumina or alumina powder with grain size being less than 0.074mm, 15-20 percent of alpha-Al2O3 powder with grain size being less than 5mum and 2-4 percent of plasticizer. To calculate according to the total weight percent of the major ingredients which is 100 percent, the additives comprise the following components in percent by weight: 0.8-1.2 percent of surfactant, 2-3 percent of preservative and 6-10 percent of acidic binder. The plastic patching material has the advantages that the plastic patching material does not contain clay, the quantity of the added plasticizer is small, the service performance is excellent, the plasticity is good, the adhesiveness is good, the preservation time is long, the normal-temperature and medium-temperature strength is higher, the volume density and the porosity of the material are appropriate and the needs of patching thermotechnical equipment can be met.

Description

technical field [0001] The invention belongs to the field of unshaped refractory materials, and in particular relates to a plastic repair material and a preparation method thereof. Background technique [0002] As an unshaped refractory material, plastic repair materials are widely used in the repair of furnace roof, furnace wall, furnace cover and other parts of industrial furnaces, as well as partial repair of furnace lining. The plastic repair compound has the advantages of high temperature strength, excellent thermal shock performance, low thermal conductivity, and flexible construction methods. [0003] At present, clay-like substances are usually used as plasticizers in plastic repair materials at home and abroad to provide good plasticity and ensure that the plastic repair materials have good plasticity at room temperature. The Chinese patent titled "Phosphate-bonded high-alumina plastic and its production method" with the publication number CN1048705C discloses a ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/101C04B35/185C04B35/622
Inventor 丁钰刘开琪王秉军刘永峰赵宏伟
Owner 北京钢研新冶工程技术中心有限公司
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