High-strength potassium hexatitanate whisker porous ceramics and preparation method thereof

Abstract

The invention relates to high-strength potassium hexatitanate whisker porous ceramics and a preparation method thereof. According to the technical scheme, the preparation method comprises uniformly mixing, by weight percentage, 50-70% of titanium dioxide, 20-40% of anhydrous potassium carbonate and 1-10% of thermosetting resin, performing compression molding, thermal treatment at 600-800 DEG C, crushing, grinding and screening to obtain a screened material A with a granularity of 0.088-0.25 mm and a screened material B with a granularity of 0.088 mm; uniformly mixing, by weight percentage, 40-60% of aluminum hydroxide, 10-20% of aluminum oxalate and 20-40% of triethanolamine boric acid, performing thermal treatment and grinding at 400-600 DEG C to obtain a ground materials with a granularity smaller than 0.088 mm; uniformly mixing, by weight percentage, 30-50% of the screened material A, 40-60% of the screened material B, 1-10% of the ground material and 1-10% of thermosetting resin, performing compression molding and thermal treatment at 800-1100 DEG C to prepare the high-strength potassium hexatitanate whisker porous ceramics. The prepared high-strength potassium hexatitanate whisker porous ceramics is uniform in size and high in porosity and compression strength.

Description

technical field [0001] The invention belongs to the technical field of potassium hexatitanate whisker porous ceramics. In particular, it relates to a high-strength potassium hexatitanate whisker porous ceramic and a preparation method thereof. Background technique [0002] Porous potassium hexatitanate whisker ceramics is a material prepared mainly from potassium hexatitanate whiskers, but its application is limited due to the following deficiencies: [0003] (1) Many of the additives, binders or fillers introduced in the preparation process are organic substances, which will decompose and oxidize during product preparation or high-temperature use to produce toxic or polluting gas emissions and affect the environment; [0004] (2) Additives or fluxes introduced in the preparation process can easily lead to adhesion and agglomeration between the whiskers, and it is easy to have side reactions with the whiskers to generate heterogeneous phases and affect the performance of th...

AI Technical Summary

Problems solved by technology

[0003] (1) Many of the additives, binders or fillers introduced in the preparation process are organic substances, which will decompose and oxidize during product preparation or high-temperature use to produce toxic or polluting gas emissions and affect the environment;

[0004] (2) Additives or fluxes introduced in the preparation process can easily lead to adhesion and agglomeration between the whiskers, and it is easy to have side reactions with the whiskers to generate heterogeneous phases and affect the performance of the material;

[0005] (3) Whiskers are difficult to disperse evenly in the system during the process of mixing, molding, and firing with other raw materials, and are easy to agglomerate, and in the process of mixing or stirring, the whiskers are easily broken by mechanical devices, thereby affecting the performance of the material;

[0006] ⑷In the process of product preparation, the size and distribution of whiskers formed in situ are difficult to effectively control, and thus the performance optimization of porous ceramic materials cannot be realized