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Preparation method of high strength rubber sealing element used for automobile instrument element

A technology for rubber seals and automotive instruments, which is applied in the field of rubber materials, can solve the problems of low strength and short service life, and achieve the effects of excellent oxidation resistance, increased strength and stable process

Inactive Publication Date: 2018-04-03
马鞍山市东方仪表有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Automotive instruments include speedometer, tachometer, oil pressure gauge, water temperature gauge, fuel gauge, charging meter, etc. In order to improve the sealing effect of automotive instruments and prevent air and dust from entering the instrument, it is often necessary to strictly seal the instrument , in the prior art, rubber materials are generally used as the seals of automobile instruments, but the common rubber seals on the market have low strength and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method for a rubber seal for high-strength automotive instrument components, comprising the following steps:

[0017] (1) Put polyaluminum chloride, polybenzimidazole fiber, and butadiene rubber masterbatch into a kneader at a mass ratio of 1:1:24, and knead at 180°C for 1 hour to obtain a base material;

[0018] (2) In parts by weight, 5 parts of vanadium pentoxide, 3 parts of molten salt, 11 parts of zinc oxide, and 14 parts of silicon micropowder are evenly mixed, and ball milled for 2 hours to obtain a strengthening agent;

[0019] (3) In parts by weight, after mixing 65 parts of base material, 6 parts of reinforcing agent, and 1 part of accelerator evenly, use an open mill to mix and refine rubber, and then use a flat vulcanizing machine to vulcanize and shape to obtain a finished product.

[0020] Specifically, in the above step (2), the molten salt includes 53% potassium nitrate, 40% sodium nitrite, and 7% sodium nitrate by mass fraction.

[0021] ...

Embodiment 2

[0025] A preparation method for a rubber seal for high-strength automotive instrument components, comprising the following steps:

[0026] (1) Put the polyaluminum chloride, polybenzimidazole fiber, and butadiene rubber masterbatch into a kneader according to the mass ratio of 1:1:25, and knead at 185°C for 1.5 hours to prepare the base material;

[0027] (2) In parts by weight, 7 parts of vanadium pentoxide, 5 parts of molten salt, 15 parts of zinc oxide, and 16 parts of silicon micropowder were evenly mixed, and ball milled for 2.5 hours to obtain a strengthening agent;

[0028] (3) In parts by weight, after uniformly mixing 68 parts of base material, 7 parts of strengthening agent and 1 part of accelerator, use an open mill to mix rubber, and then use a flat vulcanizing machine to vulcanize and shape to obtain a finished product.

[0029] Specifically, in the above step (2), the molten salt includes 53% potassium nitrate, 40% sodium nitrite, and 7% sodium nitrate by mass fr...

Embodiment 3

[0034] A preparation method for a rubber seal for high-strength automotive instrument components, comprising the following steps:

[0035] (1) Put polyaluminum chloride, polybenzimidazole fiber, and butadiene rubber masterbatch into a kneader according to a mass ratio of 1:1:26, and knead at 190°C for 2 hours to obtain a base material;

[0036] (2) In parts by weight, 9 parts of vanadium pentoxide, 8 parts of molten salt, 16 parts of zinc oxide, and 19 parts of silicon micropowder were evenly mixed, and ball milled for 3 hours to obtain a strengthening agent;

[0037] (3) In parts by weight, after uniformly mixing 70 parts of base material, 9 parts of strengthening agent and 2 parts of accelerator, use an open mill to mix and mix rubber, and then use a flat vulcanizing machine to vulcanize and shape to obtain a finished product.

[0038] Specifically, in the above step (2), the molten salt includes 53% potassium nitrate, 40% sodium nitrite, and 7% sodium nitrate by mass fracti...

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PUM

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Abstract

The invention discloses a preparation method of a high strength rubber sealing element used for an automobile instrument element. The preparation method comprises the following operation steps: (1) placing master batches of polyaluminum chloride, polybenzimidazole fibers and butadiene rubber into a kneading machine for kneading at the temperature of 180-190 DEG C for 1-2 h, so as to obtain a basematerial; (2) uniformly mixing vanadium pentoxide, fused salt, zinc oxide and silica powder and performing ball milling on the mixture for 2-3 h, so as to obtain a reinforcing agent; and (3) uniformlymixing the base material, the reinforcing agent and an accelerator, milling the mixture by an open mill, and performing vulcanization molding by a vulcanizing press, so as to obtain a finished product. The preparation method provided by the invention is safe and environmentally friendly and is stable in process, the prepared rubber sealing element is excellent in corrosion resistance, high temperature resistance and anti-oxidation property; and especially, the rubber sealing element is not deformed easily in a long-time compressive environment.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and in particular relates to a method for preparing a high-strength rubber seal for automotive instrument components. Background technique [0002] Automotive instruments include speedometer, tachometer, oil pressure gauge, water temperature gauge, fuel gauge, charging meter, etc. In order to improve the sealing effect of automotive instruments and prevent air and dust from entering the instrument, it is often necessary to strictly seal the instrument , In the prior art, rubber materials are generally used as the seals of automobile instruments, but the commercially available common rubber seals have low strength and short service life. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a method for preparing a non-deformable rubber seal. [0004] The present invention is achieved through the following technical solutions....

Claims

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Application Information

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IPC IPC(8): C08L9/00C08L79/04C08K13/02C08K3/16C08K3/22C08K3/36C08K3/28C08K5/47C08K5/40
CPCC08K2003/2296C08L9/00C08L2201/08C08L2205/16C08L79/04C08K13/02C08K3/16C08K3/22C08K3/36C08K3/28C08K5/47C08K5/40
Inventor 蔡福明
Owner 马鞍山市东方仪表有限公司
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