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Ceramic fiber sealing pad plate and preparation method thereof

A technology of sealing backing plate and ceramic fiber, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of high price, risk of long-term temperature resistance, poor high temperature resistance and wear resistance, etc.

Active Publication Date: 2016-06-01
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Others such as inorganic fibers also have high temperature resistance, but compared with asbestos fibers, they have thicker diameters, greater rigidity, and smooth surfaces. Once they are added too much, they will have poor strength and poor penetration resistance, that is, poor sealing. risk
If organic fibers account for more, the high temperature ablation rate will increase, and the long-term performance of temperature resistance will be at risk
In addition, organic synthetic fibers, carbon fibers, etc. are very expensive materials, and it is difficult to replace asbestos in economical terms.
[0007] The Chinese invention patent application with the publication number CN1847355A discloses a non-asbestos fiber sealing material and its preparation method. The disadvantage of this method is that more than 5 kinds of fibers are used at the same time, and they are put together for soaking, wheel grinding, and disc grinding. , beating
Although this patent does not contain asbestos, and uses pulp or a small amount of ceramic fiber as a reinforcing material, there is no environmental pollution problem, but its high temperature resistance and wear resistance are poor

Method used

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  • Ceramic fiber sealing pad plate and preparation method thereof
  • Ceramic fiber sealing pad plate and preparation method thereof

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preparation example Construction

[0081] The raw materials for the preparation of the ceramic fiber sealing backing plate provided by the present invention include anorthite, and the anorthite is preferably anorthite powder. The anorthite is a chemical formula of CaO·Al 2 o 3 2SiO2 2 high temperature synthetic minerals. The amount of the anorthite added to 100 parts by mass of the ceramic fiber sealing backing plate is 20-50 parts by mass, preferably 25-45 parts by mass, more preferably 20-40 parts by mass.

[0082] The raw materials for the preparation of the ceramic fiber sealing backing plate provided by the present invention include cordierite, and the cordierite is preferably cordierite powder. The cordierite is a chemical formula of 2MgO·2Al 2 o 3 ·5SiO2 2 high temperature synthetic minerals. The amount of cordierite added to 100 parts by mass of the ceramic fiber sealing backing plate is 20-40 parts by mass, preferably 25-35 parts by mass, more preferably 27-32 parts by mass.

[0083] The raw ma...

Embodiment 1

[0150] Add 60kg standard aluminum silicate fiber cotton, 120kg2.5wt% log pulp, 115kg anorthite powder, 80kg cordierite powder, 32kg muscovite, 6kg silicon carbide whiskers and 30kg nitrile latex (solid content 15kg) The pulping machine is used for pulping, and the fiber length after pulping is 3-5mm, and then added with 3Kg white carbon black, 0.6Kg zinc oxide, 0.6kg sulfur, 0.45kg accelerator PZ, 0.3kg anti-aging agent D for pre-grinding One portion of the slurry, and then add an appropriate proportion of water to keep the mass concentration of the slurry at 2.8%, and then use fourdrinier drawing forming equipment for molding, dehydration, drying, and calendering at 130°C on a paper machine to make high-temperature resistant Grind the ceramic fiber gasket.

[0151] The obtained ceramic fiber sealing backing plate was subjected to a performance test, and the results are shown in Table 2. Table 2 shows the performance test results of the ceramic fiber sealing backing plate.

Embodiment 2

[0153] In Example 2, the standard aluminum silicate fiber cotton was replaced by high-alumina aluminum silicate fiber cotton, and the rest of the components remained unchanged. The same method as in Example 1 was used to prepare a high-temperature wear-resistant ceramic fiber sealing backing plate.

[0154] The obtained ceramic fiber sealing backing plate was subjected to a performance test, and the results are shown in Table 2. Table 2 shows the performance test results of the ceramic fiber sealing backing plate.

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Abstract

The invention provides a ceramic fiber sealing pad plate, which has the chemical composition of 30 to 48 parts by mass of SiO2, 30 to 42 parts by mass of Al2O3, 5 to 13 parts by mass of CaO and 3 to 8 parts by mass of MgO. Through the chemical composition of the ceramic fiber sealing pad plate provided by the invention, anorthite and dichroite mineral facies in a specific proportion range can be formed, wherein the anorthite and dichroite mineral facies can greatly improve the high-temperature wear-resistant performance of the sealing pad plate and can prolong the service life. The result shows that the long-time use temperature of the ceramic fiber sealing pad plate reaches 900 DEG C or higher than 900 DEG C; the highest use temperature can reach 1200 DEG C or higher than 1200 DEG C; a heatproof roller of the assembled ceramic fiber sealing pad plate has good high temperature wear resistance; the service life at least reaches 20 days or more, and can reach 60 days or more to the highest degree.

Description

technical field [0001] The invention belongs to the technical field of sealing pad materials, and in particular relates to a ceramic fiber sealing pad and a preparation method thereof. Background technique [0002] In the sealing material, the sealing backing plate can be divided into two categories: rolling plate and scissor plate according to different production processes, and can also be divided into two categories: asbestos plate and non-asbestos plate according to whether the raw material contains asbestos. At present, my country's sealing market is still dominated by asbestos boards. As people pay more attention to environmental protection, asbestos-free sealing materials are imperative. Production and promotion of non-asbestos gaskets. [0003] At present, the heating furnace furnace rolls used for stainless steel hot rolling and cold rolling are made by using non-asbestos fiber gasket material set on the steel roller for pressure and fastening, and then the surface ...

Claims

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Application Information

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IPC IPC(8): C04B35/195C04B35/80C04B35/81F16J15/00
CPCC04B35/195C04B35/803C04B2235/3206C04B2235/3208C04B2235/3418C04B2235/5212C04B2235/5228C04B2235/5276C04B2235/5292F16J15/00
Inventor 刘超葛振鹏吴静
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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