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Phosphate-based composite material and preparation method thereof

A composite material and phosphate technology, which is applied in the field of quartz fiber reinforced phosphate-based composite materials and its preparation, can solve the problems of poor toughness and poor high temperature resistance, and achieve good flexibility, high temperature resistance and chemical corrosion resistance good sex effect

Active Publication Date: 2015-12-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a phosphate-based composite material and a preparation method thereof, so as to solve the problems of poor high temperature resistance and poor toughness existing in the existing phosphate-based composite materials

Method used

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  • Phosphate-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] According to the mass parts, 10 parts of aluminum monohydrogen phosphate aqueous solution and 5 parts of soft kaolin are stirred evenly to obtain a slurry, wherein the solute content in the aqueous solution of aluminum monohydrogen phosphate is 50%; take 0.3 part of magnesium oxide and 0.7 part of water, and ball mill in a ball mill Prepare the curing agent in 40 minutes; add the curing agent to the slurry at a rate of 0.5g / min and stir evenly; add 1 part of alumina and 1 part of silicon carbide and stir evenly; pre-cure at 120°C for 1 hour, and stir if necessary Homogenization treatment measures such as vibration or vibration to prevent the slurry from becoming locally hardened; hot pressing at 90MPa at 120°C for 4h; 10min, the strength after 3 times of 10min burning, the strength at room temperature is 49MPa, and the rest of the data are shown in Table 1.

[0054] Table 1

[0055] Strength / MPa

Embodiment 2

[0057] According to the mass parts, stir 30 parts of aluminum dihydrogen phosphate aqueous solution, 20 parts of aluminum monohydrogen phosphate aqueous solution and 10 parts of hard kaolin evenly, wherein the solute content in the phosphate aqueous solution is 30%; take 0.75 parts of zinc oxide and 2.25 parts of water , prepare the curing agent in a ball mill for 50 minutes; add the curing agent to the slurry at a rate of 0.4g / min, and stir evenly; add 2 parts of alumina, 2 parts of niobium carbide, and stir evenly; pre-cure at 120°C for 1.5h If necessary, apply homogenization measures such as stirring or shaking to prevent local hardening of the slurry; hot press at 60MPa at 120°C for 7h; measure its strength at room temperature, and after 300°C, 500°C, and 700°C respectively for 1 The strength after burning for 10 minutes once, 10 minutes twice, and 10 minutes three times, the strength at room temperature is 43MPa, and the other data are shown in Table 2.

[0058] Table 2 ...

Embodiment 3

[0061] In terms of parts by mass, 30 mm of quartz fiber was added in Example 3. The curing agent was 0.2 parts of magnesium oxide and 0.8 parts of water. The curing agent was prepared by ball milling in a ball mill for 20 minutes, and the curing agent was added to the slurry at a rate of 0.8 g / min. 1.2 parts of silicon dioxide, 1.4 parts of tungsten carbide. Pre-cured at 120°C for 40min, and hot pressed at 120MPa for 5h at 120°C. The proportions and strengths of the rest of the raw materials are shown in Table 3 and Table 4, wherein the solute content in the phosphate aqueous solution is 60%, and all components are measured in parts by mass.

[0062] table 3

[0063]

[0064] Table 4

[0065]

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Abstract

The invention discloses a phosphate-based composite material and a preparation method thereof. The preparation method of the composite material comprises the following steps: mixing a phosphate adhesive with kaolin, and mechanically stirring to obtain a slurry; preparing a curing agent; adding the curing agent to the obtained slurry; adding a high temperature resistant filler; adding a wear resistant filler; adding short quartz fibers to the obtained slurry, and stirring until uniform mixing; pre-curing the obtained slurry at 100-120DEG C for 0.5-4h; cooling, stirring the pre-cured and cooled slurry to obtain a pasty dough-shaped material with good flexibility and strong plasticity; and carrying out hot pressing at 110-250DEG C under 60-120MPa for 4-8h to obtain the phosphate-based composite material. The method has the advantages of short flow and low cost, and the composite material prepared in the invention has the advantages of high strength, good toughness, high temperature resistance, chemical corrosion resistance and wear resistance.

Description

technical field [0001] The invention relates to a phosphate-based composite material and a preparation method thereof, in particular to a high-temperature resistant quartz fiber reinforced phosphate-based composite material and a preparation method thereof. Background technique [0002] Composite materials are materials with two or more phase structures composed of two or more materials with different properties through physical and chemical compounding. The material not only has better properties than any single material in the composition, but also has unique properties that the components alone do not have. Composite materials are used in the fields of aerospace, automobile industry, chemical industry, textile and machinery manufacturing, medicine, sports equipment, building materials, etc. [0003] Composite materials can be divided into particle-reinforced composite materials and fiber-reinforced composite materials according to the reinforcement materials. However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B14/38
Inventor 刘玉付沈杰
Owner SOUTHEAST UNIV
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