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Preparation method of biomass cardanol internal-plasticization hydrogenated nitrile-butadiene rubber

A technology for plasticizing hydrogenated nitrile and cardanol, applied in the field of rubber preparation, can solve problems such as no cause, and achieve the effects of sufficient raw materials, obvious plasticizing effect and excellent thermal stability

Inactive Publication Date: 2019-05-10
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Cardanol is the main component of cashew nut shell oil and is a by-product of cashew nut oil. It is easy to extract, rich in resources, and low in price. It has good compatibility with most rubbers, because there is a 15 in the meta-position of diphenol in its chemical structure. An unsaturated carbon-hydrogen substitution chain with two carbons, so it has both the characteristics of phenolic compounds and the flexibility of aliphatic compounds, so it is often used as a modifier for phenolic resins, but as a rubber plasticizer, it has not yet attracted people's attention. much attention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Add 10 parts of hydrogenated nitrile rubber to 20 parts of ethyl acetate to form a homogeneous solution, then add 0.5 parts of 5% potassium hydroxide aqueous solution and 0.02 parts of sodium dodecylbenzenesulfonate to 5 parts of cardanol medium, stir vigorously to form an emulsion. Afterwards, the above solution was added dropwise to the emulsion under strong stirring conditions. After the dropwise addition, 0.001 part of initiator cumene hydroperoxide was added. Diethylenetriamine continued to react at 55°C. After the reaction, the product was washed with concentrated brine, then washed several times with distilled water, and dried to constant weight.

example 2

[0023] Add 22 parts of hydrogenated nitrile rubber to 50 parts of ethyl acetate to make a homogeneous solution, then add 0.7 parts of 10% ammonia water and 0.05 parts of sodium lauryl sulfate to 9 parts of cardanol, and stir vigorously to form lotion. Afterwards, the above solution was added dropwise to the emulsion under the condition of strong stirring. After the dropwise addition, 0.005 parts of initiator cumene hydroperoxide was added. Triethanolamine continued to react at 55°C. After the reaction, the product was washed with concentrated brine, then washed several times with distilled water, and dried to constant weight.

example 3

[0025] Add 17 parts of hydrogenated nitrile rubber to 32 parts of ethyl acetate to form a homogeneous solution, then add 0.4 parts of 8% sodium carbonate and 0.015 parts of alkyl glycosides to 10 parts of cardanol, and stir vigorously to form an emulsion. Afterwards, the above solution was added dropwise to the emulsion under strong stirring conditions. After the dropwise addition, 0.002 parts of the initiator cumene hydroperoxide was added, and after 20 minutes of exhausting oxygen with nitrogen, an equimolar amount Ethylenediamine continued to react at 55°C. After the reaction, the product was washed with concentrated brine, then washed several times with distilled water, and dried to constant weight.

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PUM

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Abstract

The invention discloses a preparation method of biomass cardanol internal-plasticization hydrogenated nitrile-butadiene rubber and relates to rubber preparation methods. The preparation method is characterized in that biomass cardanol is used as the main raw material, and the biomass cardanol is allowed to have grafting reaction with hydrogenated nitrile-butadiene rubber under the effect of cumenehydroperoxide to achieve chemical boning between the cardanol and the hydrogenated nitrile-butadiene rubber so as to achieve internal plasticization. The preparation method has the advantages that the use of petroleum-based raw materials is reduced, the cardanol is abundant, the reaction process is simple, an evident product plasticizing effect is achieved, excellent product thermal stability isachieved, plasticizer migration is close to zero, and the prepared rubber is in line with the concept of green and environment-friendly circular economy and is promising in market prospect.

Description

technical field [0001] The invention relates to a method for preparing rubber, in particular to a method for preparing biomass cardanol internally plasticized hydrogenated nitrile rubber. Background technique [0002] Hydrogenated nitrile rubber (HNBR) is a highly saturated elastomer obtained by special hydrogenation of nitrile rubber. Hydrogenated nitrile rubber has good oil resistance (good resistance to fuel oil, lubricating oil, and aromatic solvents); and due to its highly saturated structure, it has good heat resistance and excellent chemical corrosion resistance (to Freon, acid and alkali have good resistance), excellent ozone resistance, high compression set resistance; at the same time, hydrogenated nitrile rubber also has high strength, high tear performance, excellent wear resistance and other characteristics. It is one of the rubbers with excellent comprehensive properties. [0003] However, the low-temperature properties and elasticity of hydrogenated nitrile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/28
Inventor 张文政蒋宁
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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