Preparation method of silicon carbide ceramic sealing material

A technology for silicon carbide ceramics and sealing materials, applied in the field of preparation of silicon carbide ceramic sealing materials, can solve the problems of poor self-lubricating performance, large friction coefficient and easy failure of silicon carbide ceramics, and achieve excellent lubrication performance, improved strength, The effect of promoting densification

Inactive Publication Date: 2019-07-23
陈天姿
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem mainly solved by the present invention is aimed at the defect that silicon carbide ceramics as a mechanical sealing material has poor self-lubricating performance, and in a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030]Preparation of ball mill slurry: by weight, 20 parts of silicon dioxide, 15 parts of aluminum oxide, 30 parts of calcium carbonate, 15 parts of zirconia, 10 parts of sodium carbonate, 10 parts of potassium carbonate, 8 parts of aluminum carbonate, 40 parts Pour one part of boric acid into the corundum ball milling altar, and add corundum balls with a diameter of 30mm, set the rotation speed of the ball milling altar to 80r / min, and the ball milling time to 30min, to obtain a ball milling slurry.

[0031] Preparation of vitrified bond powder: Pour the ball mill slurry into a pan, place in an oven, heat up to 120°C, dry for 3 hours, put it in a mortar and grind for 40 minutes, pass through a 180-mesh sieve to obtain a vitrified bond Powder, put the vitrified bond powder into a sealed bag and store it for later use.

[0032] Preparation of fermentation filter residue: take rice husk to ignite, collect the ashes after burning, place them in a mortar and grind them, and pass ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of preparation of sealing materials and particularly relates to a preparation method of a silicon carbide ceramic sealing material. The preparation methodtakes rice husk ash as a raw material and comprises the following steps: adding palm wax and peels to obtain fermentation filter dreg; mixing the fermentation filter dreg and diamond grains to obtainridged powder; putting the rigid powder into a muffle furnace and roasting to obtain self-lubricating silicon carbide micro-powder; mixing the self-lubricating silicon carbide micro-powder with additives including maganthophyllite powder, white corundum, walnut shell powder and the like to obtain a material to be sintered; finally, putting the material to be sintered into a graphite mold to obtainthe silicon carbide ceramic sealing material. Nitrogen-containing composite powder and a boron-containing ceramic binding agent are mixed and then are hotly pressed and sintered to form a hexagonal boron nitride crystal, so that the wear-resisting performance and self-lubricating performance of the sealing material are improved; the fermentation filter dreg containing the rice husk ash is reducedand carbonized on the surface of a diamond, and the densification of the sealing material is promoted; then a polytetrafluoroethylene film is sprayed to form an impermeable lubricating protection layer on the surface of the sealing material; the silicon carbide ceramic sealing material has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of sealing material preparation, and in particular relates to a method for preparing a silicon carbide ceramic sealing material. Background technique [0002] In industrial production and daily life, sealing is of great significance. Advanced sealing means can not only improve the operating cycle of equipment, reduce consumption, save energy, reduce pollution, but also an important guarantee for safe production. The performance of the sealing material is the primary factor in determining the reliability of the seal. Sealing materials refer to materials that can withstand joint displacement to achieve airtight and watertight purposes, and are embedded in joints such as devices and buildings. Sealing materials involve almost all industrial and civil fields, and play an important role in national defense, chemical industry, coal, petroleum, metallurgy, transportation, machinery manufacturing industry and aero...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/565C04B41/83
CPCC04B35/565C04B41/009C04B41/4846C04B41/83C04B2235/3206C04B2235/3217C04B2235/3244C04B2235/3409C04B2235/3418C04B2235/386C04B2235/442C04B2235/77C04B2235/96C04B41/4523
Inventor 陈天姿
Owner 陈天姿
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap