A polyphenylene sulfide/boron carbide composite ceramic nozzle and its manufacturing method

Abstract

The invention discloses a polyphenylene sulfide / boron carbide compounded ceramic nozzle, which is characterized by being prepared from the following raw materials by weight part: 76-87 of boron carbide, 2-3 of kaolin, 1-3 of volcanic ash, 1-2 of limestone, 2-5 of talc, 4-8 of mullite, 1-2 of silicon oil, 0.2-0.4 of sodium oxide, 1.2-2.3 of corn cob, 11-14 of polyphenylene sulfide, 0.5-0.7 of plant ash, 0.3-0.5 of glass fiber, 6-9 of an esterified pectin solution, 2-4 of an assistant, and a proper amount of water. According to the invention, polyphenylene sulfide, plant ash glass fiber and the like are added as raw materials, the preparation process and formulation of the prior art are improved, and the prepared ceramic nozzle has the advantages of high mechanical strength, high temperature resistance, chemical resistance, abrasion resistance and the like. Also, the qualified rate of sintered products is greatly improved.

Description

technical field [0001] The invention relates to a preparation process of a ceramic nozzle suitable for a color sorter, belongs to the technical field of nozzle molding, and in particular relates to a polyphenylene sulfide / boron carbide composite ceramic nozzle and a manufacturing method thereof. Background technique [0002] Color sorter is a kind of non-destructive sorting equipment used for quality inspection and grading of bulk materials. It is widely used in grain, food, pigment chemical industry and other industries. The color sorter uses photoelectric detection technology to quickly and effectively distinguish and remove the heterochromatic particles in the granular material according to the difference in the optical characteristics of the material, so as to sort materials of different quality grades. The removal action is done by the ceramic nozzle, which is an indispensable key component in the color sorter system, and its performance directly affects the effect of c...

AI Technical Summary

Problems solved by technology

[0003] Since ceramic nozzles were introduced into China in the 1990s, the materials have been continuously improved and updated, gradually developing from oxide ceramics to nitride ceramics and carbide ceramics, but the production technology and preparation methods are backward, resulting in the existence of ceramic nozzles in the prior art. Many defects, such as low hardness, poor wear resistance, weak anti-corrosion and anti-erosion ability, low ductility, etc.