Nitrile-butadiene rubber NBR gear cover sealing material and preparation method thereof

A technology of nitrile rubber and sealing material, applied in the field of rubber materials, can solve the problems of low production efficiency, inability to meet price requirements and high performance requirements, shorten vulcanization molding time, improve high and low temperature resistance and medium resistance, and improve resistance Effects of Ozone Properties

Active Publication Date: 2014-05-07
ASIMCO NVH TECH CO LTD ANHUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The NBR gear covers currently in use are mainly imported products from abroad. Localization cannot

Method used

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  • Nitrile-butadiene rubber NBR gear cover sealing material and preparation method thereof
  • Nitrile-butadiene rubber NBR gear cover sealing material and preparation method thereof
  • Nitrile-butadiene rubber NBR gear cover sealing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] In the specific implementation process, refer to figure 1 The preparation method of the above-mentioned nitrile rubber NBR gear cover sealing material includes the following steps:

[0028] S1, according to the proportion of nitrile rubber N241, nitrile rubber N240S, zinc oxide, stearic acid, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-isopropyl-N -Phenyl-p-phenylenediamine, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, microcrystalline wax and microcrystalline wax OK1987 are added to the internal mixer and mixed for 20~ After 60 seconds, add carbon black N-774 and carbon black N-990 according to the proportion and mix to 85~90℃, add plasticizer TP-90B and mix to 93~97℃, add sulfur S-80, 4', 4-dithiobismorpholine, tetramethylthiuram disulfide and N-cyclohexyl-2-benzothiazole sulfenamide are mixed to 110~120℃, and the pieces are mixed to obtain the final rubber compound;

[0029] S2. The final rubber compound obtained from S1 is molded and vulcanized to obtain a nitril...

Example Embodiment

[0031] Example 1

[0032] A nitrile rubber NBR gear cover sealing material, the raw material of which comprises by weight:

[0033]

[0034] In Example 1, the method for preparing the above-mentioned nitrile rubber NBR gear cover sealing material includes the following steps:

[0035] S1, according to the proportion of nitrile rubber N241, nitrile rubber N240S, zinc oxide, stearic acid, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-isopropyl-N -Phenyl-p-phenylenediamine, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, microcrystalline wax and microcrystalline wax OK1987 are added to the internal mixer and mixed for 20 seconds , Then add carbon black N-774 and carbon black N-990 according to the ratio and mix to 90℃, add plasticizer TP-90B and mix to 97℃, add sulfur S-80, 4',4-dithiobis Morpholine, tetramethylthiuram disulfide and N-cyclohexyl-2-benzothiazole sulfenamide are mixed to 120°C, and the pieces are mixed to obtain the final rubber compound;

[0036] Among them, the top pl...

Example Embodiment

[0038] Example 2

[0039] A nitrile rubber NBR gear cover sealing material, the raw material of which comprises by weight:

[0040]

[0041]

[0042] In Example 2, the method for preparing the above-mentioned nitrile rubber NBR gear cover sealing material includes the following steps:

[0043] S1, according to the proportion of nitrile rubber N241, nitrile rubber N240S, zinc oxide, stearic acid, 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-isopropyl-N -Phenyl-p-phenylenediamine, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, microcrystalline paraffin and microcrystalline wax OK1987 are added to the internal mixer and mixed for 50 seconds , Then add carbon black N-774 and carbon black N-990 according to the ratio and ban it to 87℃, add plasticizer TP-90B and ban it to 95℃, add sulfur S-80, 4',4-dithiobis Morpholine, tetramethylthiuram disulfide and N-cyclohexyl-2-benzothiazole sulfenamide were mixed to 115°C, and the pieces were mixed to obtain the final rubber compound;

[0044] ...

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Abstract

The invention discloses a nitrile-butadiene rubber NBR gear cover sealing material which comprises the following raw materials in parts by weight: 60-90 parts of NBR N241, 10-40 parts of NBR N240S, 3-7 parts of zinc oxide, 1-3 parts of a stearic acid, 1-3 parts of RD, 2-4 parts of 4010 NA, 1-3 parts of 6-ethoxy-2-methyl-1,2,4-trimethyl-1,2-dihydroquinoline, 1-3 parts of microcrystalline wax, 1-3 parts of microcrystalline wax OK1987, 5-20 parts of carbon black N-774, 35-55 parts of carbon black N-990, 10-20 parts of a plasticizer TP-90-B, 0.5-1 part of sulfur S-80, 0.5-2 parts of 4',4-DTDM, 0.5-2 parts of tetramethyl thiuram disulfide, and 1-3 parts of N-cyclohexylbenzothiazole-2-sulphenamide. The invention also discloses a preparation method of the nitrile-butadiene rubber NBR gear cover sealing material.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a nitrile rubber NBR gear cover sealing material and a preparation method thereof. Background technique [0002] With the development of automotive electronic technology, the application of electric window system in automobiles is becoming more and more extensive. It mainly uses the positive and negative rotation of the motor to drive the rocker handle to rotate the gear, so as to control the lifting of the window glass, which is easy to operate. The gear cover is one of the most important components in the electric window system. Its important function is to seal the rotating gears and prevent water, oil and dust in the air from entering the electric system, causing the electric window system to fail. The radial force between the gear cover and the sealing part of the rotating gear must maintain stability, and the rubber material is required to have good high and low t...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/02C08K3/04C08K3/22C08K5/18C08K5/09C08K5/3437C08K5/47B29B7/28B29C35/02
Inventor 张宁君
Owner ASIMCO NVH TECH CO LTD ANHUI
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