Ultralow-temperature-resistant ozone-resistant modified rubber

A modified rubber and ozone-resistant technology, applied in the field of rubber processing, can solve the problems of poor insulation performance, poor low temperature resistance, low elasticity, etc., and achieve the effect of prolonging the life of the product and expanding the field of use

Inactive Publication Date: 2015-12-02
WUHU JITUO RUBBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are poor low temperature resistance, poor ozone re

Method used

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  • Ultralow-temperature-resistant ozone-resistant modified rubber

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example one

[0033] An ultra-low-temperature-resistant ozone-resistant modified rubber provided in this embodiment includes the following components by mass:

[0034] 95 parts of nitrile rubber,

[0035] 15 parts of polyvinyl chloride,

[0036] 60 parts of carbon black,

[0037] 5 parts of silica,

[0038] 10 parts of dioctyl sebacate,

[0039] 5 parts of zinc oxide,

[0040] 0.5 parts of stearic acid,

[0041] 0.5 part of sulfur,

[0042] 1.5 parts of thiourea antioxidant,

[0043] 3.0 parts of microcrystalline paraffin,

[0044] 1.2 parts of N-cyclohexyl-2-benzothiazole sulfenamide.

[0045] The above-mentioned mass parts of nitrile rubber, polyvinyl chloride, and plasticizer are blended in an internal mixer to 160°C to prepare a modified rubber. The modified rubber, carbon black, plasticizer, antioxidant, vulcanizing agent, etc. are blended in the internal mixer. The rubber, carbon black, etc. are mixed in the internal mixer for 40 seconds and then the plasticizer is added and clean...

Example Embodiment

[0046] Example two

[0047] An ultra-low-temperature-resistant ozone-resistant modified rubber provided in this embodiment includes the following components by mass:

[0048] 105 parts of nitrile rubber,

[0049] 30 parts of polyvinyl chloride,

[0050] 90 parts of carbon black,

[0051] 15 parts of silica,

[0052] 20 parts of dioctyl sebacate,

[0053] 12 parts of zinc oxide,

[0054] 2 parts stearic acid,

[0055] Sulfur 1..5 parts,

[0056] 3.0 parts of thiourea antioxidant,

[0057] 5.0 parts of microcrystalline paraffin,

[0058] 2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide.

[0059] The mixing method is the same as in Example 1.

Example Embodiment

[0060] Example three

[0061] An ultra-low-temperature-resistant ozone-resistant modified rubber provided in this embodiment includes the following components by mass:

[0062] 100 parts of nitrile rubber,

[0063] 20 parts of polyvinyl chloride

[0064] 70 parts of carbon black

[0065] 10 parts of silica

[0066] 20 parts of dioctyl sebacate

[0067] 5 parts of zinc oxide

[0068] 0.5 parts of stearic acid

[0069] 1 part of sulfur

[0070] 3 parts of thiourea antioxidant

[0071] 3.5 parts of microcrystalline paraffin

[0072] 1.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide.

[0073] The mixing method is the same as in Example 1.

[0074] The test results of the low temperature and ozone resistance of the rubber materials provided in the above embodiments are shown in Table 1:

[0075] Table 1

[0076]

[0077] It can be seen from the above experimental data that the low-temperature and ozone-resistant performance of Examples 1 to 3 is significantly better than that of the comparative exa...

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Abstract

The invention discloses an ultralow-temperature-resistant ozone-resistant modified rubber which comprises the following components in parts by mass: 95-105 parts of nitrile-butadiene rubber, 15-30 parts of polyvinyl chloride, 60-90 parts of carbon black, 5-15 parts of silicon dioxide, 10-20 parts of dioctyl sebacate, 5-12 parts of zinc oxide, 0.5-2 parts of stearic acid, 0.5-1.5 parts of sulfur, 1.5-3.0 parts of thiocarbamide anti-aging agent, 3.0-5.0 parts of microcrystalline wax and 1.2-2.5 parts of N-cyclohexyl-2-benzothiazole sulfenamide. The modified rubber disclosed by the invention can greatly enhance the ozone resistance and low-temperature resistance of the product and obviously prolong the service life of the rubber product under the conditions of low temperature and high ozone concentration.

Description

technical field [0001] The invention relates to the technical field of rubber processing, in particular to a modified rubber with super low temperature resistance and ozone resistance. technical background [0002] In the prior art, nitrile rubber is usually used for rubber products with oil resistance requirements, and nitrile butadiene rubber rubber It is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity. Due to the poor low temperature resistance and ozone resistance of nitrile rubber, polyvinyl chloride resin is used to modify nitrile rubber, which greatly improves its ozone resistance without affecting its low temperature resistance, and expands...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L27/06C08L91/06C08K13/02C08K3/04C08K3/36C08K5/11C08K3/22C08K5/09C08K3/06C08K5/405C08K5/47
Inventor 吕晓刚吴喜林王磊
Owner WUHU JITUO RUBBER TECH
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