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Screened sealing material without asbestos fiber and its prepn process

A non-asbestos fiber, sealing material technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of human body and environmental hazards, high weight gain and thickening, oil resistance, and high temperature resistance of sealing materials. Achieve good tensile strength and high oil resistance

Inactive Publication Date: 2006-10-18
舟山海山机械密封材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the oil resistance and high temperature resistance of this sealing material are not very high. When the material is used in an oily environment, its weight gain and thickening are relatively high, especially the sepiolite fiber and wollastonite that still contain asbestos fiber properties. Fibers, etc., still have the possibility of harming the human body and the environment

Method used

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  • Screened sealing material without asbestos fiber and its prepn process

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Comparison scheme
Effect test

Embodiment 1

[0037] The drawing sealing material (A) of non-asbestos fiber of the present invention mainly is made up of following each component and its weight percent distribution ratio is as follows:

[0038] Fiber 30wt%

[0039] Filler 50wt%

[0040] Binder 5wt%

[0041] Latex 8wt%

[0042] Compounding agent 7wt%

[0043] The manufacturing process adopted by the sealing material (A):

[0044] Calculate the actual composition of each tank according to the above formula ratio, and soak the calculated weight fibers, including mineral wool fibers, chopped glass fibers, ceramic fibers, chemical synthetic fibers, cellulose fibers, etc., in the organic chemical solution After soaking, loosen, remove impurities, and open in a beater and a grinding disc, so that the degree of percussion of various fibers can reach more than 75-80, and the concentration of the slurry is 2-8%. Then, fillers (graphite powder, clay powder, calcium carbonate, mica powder, kaolin powder, attapulgite powder, bent...

Embodiment 2

[0051]The drawing sealing material (B) of non-asbestos fiber of the present invention mainly is made up of following each component and its weight percent distribution ratio is as follows:

[0052] Fiber 40wt%

[0053] Filler 40wt%

[0054] Binder 5wt%

[0055] Latex 8wt%

[0056] Compounding agent 7wt%

[0057] Auxiliary 0.32wt% (added by dry glue)

[0058] Calculate the actual composition of each tank according to the above formula ratio, and soak the calculated weight fibers, including mineral wool fibers, chopped glass fibers, ceramic fibers, chemical synthetic fibers, cellulose fibers, etc., in the organic chemical solution After soaking, loosen, remove impurities, and open in a beater and a grinding disc, so that the degree of percussion of various fibers can reach more than 75-80, and the concentration of the slurry is 2-8%. Then, fillers (graphite powder, clay powder, calcium carbonate, mica powder, kaolin powder, attapulgite powder, bentonite, etc.) are added to ...

Embodiment 3

[0067] The drawing sealing material (C) of non-asbestos fiber of the present invention mainly is made up of following each component and its weight percent distribution ratio is as follows:

[0068] Fiber 40wt%

[0069] Filler 30wt%

[0070] Binder 8wt%

[0071] Latex 14wt%

[0072] Compounding agent 8wt%

[0073] Auxiliary 9wt% (plus)

[0074] The manufacturing process adopted by the asbestos-free fiber-free sealing material (C):

[0075] Calculate the feeding amount of the actual composition of each pool according to the above formula ratio, and soak the calculated weight fibers, including mineral wool fibers, chopped glass fibers, ceramic fibers, chemical synthetic fibers, cellulose fibers, etc., in the organic solution, and then Loosen, remove impurities, and open in the beater and grinding disc, so that the beating degree of various fibers can reach more than 75-80, and the concentration of the slurry is 2-8%. Then, fillers (graphite powder, clay powder, calcium car...

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Abstract

The present invention is screened sealing material without asbestos fiber and its preparation process. The sealing material is prepared with fiber 10-70 wt%, stuffing 30-80 wt%, adhesive 1-10 wt%, latex 5-20 wt% and compounding agent 4-10 wt%, where the latex is synthetic latex or natural latex, the adhesive is polymer adhesive or polymer adhesive composition, the stuffing is graphite powder, bentonite, etc. of granularity over 120 meshes, and the fiber is 1000 deg.c over high temperature treated mineral wool fiber, short glass fiber, ceramic fiber, etc. The sealing material has high tensile strength, high oil tolerance, high heat resistance, long service life and no harmful asbestos.

Description

technical field [0001] The invention relates to a sealing material, in particular to a non-asbestos fiber-drawn sealing material which does not contain asbestos fibers. Background technique [0002] In industries such as automobiles, machinery, and petrochemicals, sealing materials are widely used in the manufacture of engines, refrigerators, and various fluid control and drive devices. The performance and quality of these materials directly affect the reliable sealing and service life of various machinery and devices. At the same time, with the development of industrialization, higher requirements are placed on the performance and material of sealing materials. For this reason, the sealing material should not only better meet the performance requirements put forward by customers, but also be conducive to the production and use environment. [0003] At present, some sealing materials use composite plates or sheets based on metal sheets, which are usually composite sealing ...

Claims

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Application Information

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IPC IPC(8): C09K3/10
Inventor 施中堂
Owner 舟山海山机械密封材料股份有限公司
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