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Color-change resistant latch-locked valve cock rubber formula and method for making same

A valve and rubber technology, applied in tire inflation valves, tire parts, transportation and packaging, etc., can solve the problems of paint color changes, affecting the appearance quality of rims, and not considering the discoloration of rubber to paint, etc.

Inactive Publication Date: 2008-03-05
SHANGHAI BAOLONG AUTOMOTIVE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The valve (especially the snap-on valve) is installed on the rim of the car, and its rubber part is combined with the rim. During the long-term use, the compounding agent in the rubber (in the rubber formula, except for rubber and reinforcing agent) Components other than plasticizers are collectively referred to as compounding agents) components gradually migrate to the surface and gradually react chemically with the paint on the surface of the rim, resulting in changes in the color of the paint and affecting the appearance quality of the rim
[0003] The existing black rubber product formulas do not consider the discoloration of the rubber to the paint. When the rim discoloration occurs, it is often recommended that the manufacturer replace the paint material

Method used

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  • Color-change resistant latch-locked valve cock rubber formula and method for making same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0078] In one embodiment of the present invention, the preparation method step of anti-color change rubber is provided as follows:

[0079] 1. Processing technology:

[0080] 1) Mastication: In order to improve the plasticity of raw rubber, use a closed rubber mixer for plastication, and it is required to park for 8-72 hours after cooling;

[0081] 2), batching: batching according to the mass parts specified in the rubber formula, that is, other raw material components except rubber;

[0082] 3), one-stage mixing: using a closed rubber mixer for mixing

[0083] In the first step, drop into the masticated rubber of step 1), and knead for 3 minutes;

[0084] In the second step, put in compounding agent (active agent, stearic acid, anti-aging agent, protective paraffin), 30-40 parts of reinforcing agent, and knead for 2 minutes;

[0085] In the third step, put in 20-30 parts of reinforcing agent and plasticizer, and mix for 3 minutes;

[0086] The fourth step is to discharge ...

Embodiment 1

[0157] The composition of the rubber formula composition is shown in Table 1 below:

[0158] Table 1 Composition of Anti-color Change Rubber Formula Composition

[0159] material name

parts by mass

material name

parts by mass

rubber

100. 0

Plasticizer naphthenic oil

6.0

Active agent zinc oxide

5.0

accelerator DM

(dibenzothiadisulfide

azole)

0.6

stearic acid

2.0

Accelerator CZ

(N-cyclohexyl-2-benzene

and thiazole sulfenamide)

0.7

Antiaging agent CPL

1.0

Accelerator TT

0.2

[0160] (GREATLAKES public

produced by the company)

(Tetramethyl sulfide

Lamb)

protective paraffin

1.5

vulcanizing agent sulfur

1.2

Reinforcing agent carbon black

50

Vulcanizing agent DTDM

(Dimorphine disulfide ...

Embodiment 2

[0188] The composition of the rubber formulation composition is shown in Table 2 below:

[0189] Table 2 Discoloration-resistant rubber formula composition composition

[0190] material name

[0191] The same preparation method as in Example 1 was used to prepare the snap-on air valve, and the method of Comparative Example 1 was used to measure the resistance to discoloration, and it remained unchanged for 12 months.

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Abstract

The present invention provides one kind of color distortion resistant rubber composition for tyre valve. The rubber composition consists of rubber 100.0 weight portions, phenolic antiager 1.0-2.5 weight portions, plasticizer 5.0-12.0 weight portions, and vulcanizer 2.0-4.3 weight portions, and contains rubber in 30-90 wt%. The color distortion resistant rubber and its product have color distortion resisting performance.

Description

technical field [0001] The invention relates to a rubber formulation and a preparation method thereof, in particular to a discoloration-resistant rubber formulation and a preparation method thereof. Background technique [0002] The valve (especially the snap-on valve) is installed on the rim of the car, and its rubber part is combined with the rim. During the long-term use, the compounding agent in the rubber (in the rubber formula, except for rubber and reinforcing agent) Components other than plasticizers are collectively referred to as compounding agents) components gradually migrate to the surface and gradually react chemically with the paint on the surface of the rim, resulting in changes in the color of the paint and affecting the appearance quality of the rim. [0003] The existing black rubber product formulations do not consider the discoloration of the rubber to the paint. When the rim discoloration occurs, it is often recommended that the manufacturer replace the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L23/16C08K5/47B60C29/00C08K5/40C08K5/42C08K3/04
Inventor 陈飞
Owner SHANGHAI BAOLONG AUTOMOTIVE CORP
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