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Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same

A technology of solid lubricants and molybdenum disulfide, applied in chemical instruments and methods, and other chemical processes, can solve problems such as poor ozone resistance, poor electrical properties, and poor low temperature resistance, and achieve enhanced modification effects and excellent friction reduction Good anti-wear performance and aging resistance

Inactive Publication Date: 2012-07-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantages are poor low temperature resistance, poor ozone resistance, poor electrical properties, and slightly lower elasticity.

Method used

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  • Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same
  • Wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR/PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In Example 1, 100 parts by mass of nitrile rubber (brand: NBR-26) and 8 parts by mass of molybdenum disulfide MoS are used in this embodiment. 2 , 2 parts by mass of zinc oxide, 60 parts by mass of carbon black, 0.3 parts by mass of stearic acid, 4 parts by mass of 2,5-dimethyl-2,5 (di-tert-butylperoxy) hexane (DBPH), 2 parts by mass Parts of 2-mercaptobenzimidazole (MBI), 1 part by mass of N-phenyl-2-naphthylamine (D), 6 parts by mass of triallyl isocyanurate (TAIC), 10 parts by mass of phthalic acid Dioctyl formate (DOP). Using low-temperature mixing, first add 100 parts by mass of the base rubber compound, then add molybdenum disulfide, zinc oxide, carbon black, stearic acid, antioxidant, accelerator, vulcanizing agent, plasticizer, and mixing roll temperature 40~60℃, the prepared rubber compound should be parked for 16~20 hours; before vulcanization, the above-mentioned rubber compound is re-mixed and thinned out, and the rubber compound is vulcanized and molded. The...

Embodiment 2

[0025] In the second embodiment, 100 parts by mass of nitrile rubber polyvinyl chloride blend (brand: NBR-26 / PVC-32) and 10 parts by mass of molybdenum disulfide MoS are used in this embodiment. 2 , 2 parts by mass zinc oxide, 80 parts by mass carbon black, 0.2 parts by mass stearic acid, 6 parts by mass 2,5-dimethyl-2,5 (di-tert-butylperoxy) hexane (DBPH), 1 mass Parts of 2-mercaptobenzimidazole (MBI), 1 part by mass of N-phenyl-2-naphthylamine (D), 4 parts by mass of triallyl isocyanurate (TAIC), 5 parts by mass of phthalic acid Dioctyl formate (DOP). Others are the same as the first embodiment.

Embodiment 3

[0026] Example 3: This embodiment uses 100 parts by mass of hydrogenated nitrile butadiene rubber (brand: Zetpol2010L) and 5 parts by mass of molybdenum disulfide MoS 2 , 3 parts by mass zinc oxide, 50 parts by mass carbon black, 0.5 parts by mass stearic acid, 5 parts by mass 2,5-dimethyl-2,5 (di-tert-butylperoxy) hexane (DBPH), 1 mass Parts of 2-mercaptobenzimidazole (MBI), 1 part by mass of N-phenyl-2-naphthylamine (D), 5 parts by mass of triallyl isocyanurate (TAIC), 5 parts by mass of phthalic acid Dioctyl formate (DOP). Others are the same as the first embodiment.

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Abstract

The invention relates to a wear-resistant modified HNBR (hydrogenated nitrile butadiene rubber), NBR (nitrile butadiene rubber) and NBR / PVC (polyvinyl chloride) dynamic sealing material adopting molybdenum disulfide solid lubricant. Components of the dynamic sealing material comprise rubber matrix materials, the molybdenum disulfide solid lubricant, zinc oxide, stearic acid, anti-ageing agent, accelerator, vulcanizing agent and plasticizer. The wear-resistant modified HNBR, NBR and NBR / PVC dynamic sealing material is prepared by plastication, mixing and vulcanization molding. On the premise of maintaining original advantages of base materials such as oil resistance, corrosion resistance, weather proofing and ageing resistance, a dynamic seal ring for a high-speed running mechanical part and prepared by the three materials has more excellent friction reduction and abrasion resistance, and a certain reinforced modified effect is achieved.

Description

Technical field [0001] The invention relates to a rubber dynamic sealing material, in particular to a HNBR, NBR, NBR / PVC dynamic sealing material using a molybdenum disulfide solid lubricant wear-resistant modifier. Background technique [0002] At present, nitrile rubber is the most widely used elastomer in sealing materials, which is mainly due to its excellent oil resistance and a relatively wide temperature range (-55℃~+125℃). Nitrile rubber NBR is a copolymer of butadiene and acrylonitrile. Changing the composition of the copolymer can obtain sealing materials under different conditions of use. Nitrile rubber is mainly produced by low-temperature emulsion polymerization, with excellent oil resistance, high abrasion resistance, good heat resistance and strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor electrical properties, and slightly lower elasticity. It is mainly used to make oil-resistant products, such as oil-resistant...

Claims

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Application Information

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IPC IPC(8): C08L15/00C08L9/02C08L27/06C08K13/02C08K3/30C08K3/04C08K3/22C09K3/10B29C35/02
Inventor 郭强张四刚赵正平张经毅李夏
Owner SHANGHAI UNIV
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