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Nonasbestos mixed fiber enhanced rubber base sealing composite materials and method for making same

A composite material and fiber-reinforced technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of poor aging performance, stress relaxation resistance, narrow applicable temperature range of NAFC materials, etc., and achieve low sealing performance and high mechanical strength Effect

Inactive Publication Date: 2006-03-29
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The technical problem to be solved by the present invention is to propose a novel high-temperature-resistant, low-cost NAFC material in order to solve the above-mentioned NAFC material with narrow applicable temperature range, high manufacturing cost, poor stress relaxation resistance and aging performance. One purpose is to provide a kind of preparation technology of above-mentioned material

Method used

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  • Nonasbestos mixed fiber enhanced rubber base sealing composite materials and method for making same
  • Nonasbestos mixed fiber enhanced rubber base sealing composite materials and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] NAFC material composition ratio 1 (as shown in the table below):

[0084] composition

Weight distribution (%)

composition

Weight distribution (%)

NBR-26

9.75

fill in

Material

calcium carbonate

8.2

NR

5.25

Kaolin

2.5

Aramid 1313 fiber

6.0

Talc powder

1.8

pre-oxidized silk fiber

9.0

white carbon black

3.5

Sepiolite fiber

58.42

Antiaging agent

0.38

Vulcanizing agent

0.34

Zinc oxide

0.9

Accelerator TT

0.07

stearic acid

0.5

accelerator DM

0.12

[0085] Main process parameters:

[0086] Plasticizing time: 15min

[0087] Mixing time: 15min

[0088] Vulcanization time: 10min

[0089] Vulcanization temperature: 145±5℃

[0090] Vulcanization pre...

Embodiment 2

[0094] NAFC material composition ratio 2 (see table below):

[0095] composition

Weight distribution (%)

composition

Weight distribution (%)

NBR-26

6.825

fill in

Material

calcium carbonate

7.0

NR

3.675

Kaolin

3.0

Aramid 1313 fiber

8.55

Talc powder

2.0

pre-oxidized silk fiber

6.05

white carbon black

3.0

Sepiolite fiber

58.42

Antiaging agent

0.26

Vulcanizing agent

0.27

Zinc oxide

0.53

Accelerator

0.1

stearic acid

0.32

[0096] Main process parameters:

[0097] Plasticizing time: 15min

[0098] Mixing time: 20min

[0099] Vulcanization time: 10min

[0100] Vulcanization temperature: 145±5℃

[0101] Vulcanization pressure: 16±2MPa

[0102] NAFC material transverse tensile strength test results:

[0103] ...

Embodiment 3

[0105] NAFC material composition ratio 3 (as shown in the table below):

[0106] composition

Weight distribution (%)

composition

Weight distribution (%)

NBR-26

9.0

fill in

Material

calcium carbonate

4.8

NR

6.0

Kaolin

2.2

Aramid 1313 fiber

11.0

Talc powder

1.8

prehydrogenated silk fiber

8.0

white carbon black

2.2

Sepiolite fiber

53

Antiaging agent

0.375

Vulcanizing agent

0.39

Zinc oxide

0.75

Accelerator

0.15

stearic acid

0.45

[0107] Main process parameters:

[0108] Plasticizing time: 15min

[0109] Mixing time: 20min

[0110] Vulcanization time: 15min

[0111] Vulcanization temperature: 145±5℃

[0112] Vulcanization pressure: 16±2MPa

[0113] NAFC material transverse tensile strength test results:

[0114] project

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Abstract

The invention relates to a pre- preoxidated string, aramid fiber or mixed fiber strengthened rubber sealing compound material and its producing technique. The components comprises of : 1, strengthened fiber, 2. enlarged-volume fiber, 3. flexible sticker, 4. filling material, 5. assistant; the mass ratios of each component are: strengthened fiber 10%-36%, enlarged-volume fiber 40-65%, flexible sticker 10-23%, filling material 9.6-21%, assistant 1.6-4.7%. The strengthened fiber is the mixture of pre- preoxidated fiber and aramid fiber or, assistant is accelerant, activator, vulcanizing agent and antioxidant, the technique of the compound material is : plasticate the flexible sticker, mixing the strengthened fiber, inorganic filling material having been prepared, the enlarged-volums fiber and assistant, press into slices, sulfurate to acquire the product. The material has solved the problems such as the unsatisfying range of temperature of the present material NAFC, high productive cost, bad antitensile stress and aging, it is a new NAFC resistant to high temperature, with low cost.

Description

technical field [0001] The invention relates to a non-asbestos mixed fiber-reinforced rubber-based sealing composite material and its manufacturing process, in particular to a pre-oxidized silk, aramid fiber or arylsulfone fiber-reinforced rubber-based sealing composite material and its manufacturing process. Background technique [0002] In recent years, with the gradual prohibition of asbestos sealing materials at home and abroad, it is urgent to develop a compressed non-asbestos rubber-based sealing material (Non-asbestos fibercompressed, hereinafter referred to as NAFC) that can meet the technical indicators of asbestos rubber gaskets. [0003] Some well-known manufacturers of sealing materials in the world, such as Garlock Company in the United States, Klinger Company in Austria, Flextallic Company in the United Kingdom, Kempchen Company in Germany, Valqua and Pillar in Japan, have successively invested a lot of manpower and material resources in research and development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08J5/06C08K3/36C09K3/10
Inventor 顾伯勤陈晔陆晓峰汤东征于涛
Owner NANJING TECH UNIV
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