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Modified rubber and preparation method thereof

A modified rubber and modified technology, which is applied in the field of modified rubber and its preparation, can solve the problems of poor aging resistance, no obvious improvement in mechanical properties, uneven dispersion of modified nitrile rubber, etc., and achieve good aging resistance , Improve mechanical properties and physical and chemical properties, reduce the effect of surface energy

Pending Publication Date: 2022-06-28
施以进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The modified nitrile rubber obtained by the above invention still has no obvious improvement in mechanical properties due to uneven dispersion, and its aging resistance is relatively poor.

Method used

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  • Modified rubber and preparation method thereof
  • Modified rubber and preparation method thereof

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Embodiment 1

[0043] The present embodiment provides a kind of preparation method of modified rubber, specifically comprises the following steps:

[0044] S1. Preparation of modified graphite: add 100 parts by weight of graphite to 200 parts by weight of 1mol / L NaOH solution, soak for 1 hour, wash, dry at 70°C for 2 hours, ball mill for 2 hours, pass through a 500-mesh sieve, add 1-butyl- 3-Ethylimidazolium chloride, microwave heating to 60°C, stirring for 30min, 1000W ultrasonic for 1h, 3000r / min centrifugation for 15min, washing the solid with deionized water, drying at 70°C for 2h to obtain modified graphite;

[0045] S2. Pretreatment of polyester fibers: 100 parts by weight of polyester fibers are added to 200 parts by weight of ethanol aqueous solution containing 5wt% NaOH, wherein the ethanol content is 30wt%, heated and boiled for 20min, filtered, washed with deionized water, Obtain pretreated polyester fibers;

[0046] S3. Preparation of catalyst solution: Cobalt sulfate is dissolv...

Embodiment 2

[0052] The present embodiment provides a kind of preparation method of modified rubber, specifically comprises the following steps:

[0053] S1. Preparation of modified graphite: add 100 parts by weight of graphite to 200 parts by weight of 2mol / L KOH solution, soak for 2 hours, wash, dry at 70°C for 2 hours, ball mill for 4 hours, pass through a 700-mesh sieve, add 1-butyl- 3-Ethylimidazolium chloride, microwave heating to 80°C, stirring for 40min, 2000W ultrasonic for 3h, 3000r / min centrifugation for 15min, the solid was washed with deionized water, and dried at 70°C for 2h to obtain modified graphite;

[0054] S2. Pretreatment of polyester fibers: 100 parts by weight of polyester fibers are added to 200 parts by weight of ethanol aqueous solution containing 10wt% KOH, wherein the ethanol content is 50wt%, heated and boiled for 30min, filtered, washed with deionized water, Obtain pretreated polyester fibers;

[0055] S3. Preparation of catalyst solution: Cobalt bromide is d...

Embodiment 3

[0061] The present embodiment provides a kind of preparation method of modified rubber, specifically comprises the following steps:

[0062] S1. Preparation of modified graphite: Add 100 parts by weight of graphite into 200 parts by weight of 1.5mol / L NaOH solution, soak for 1.5 hours, wash, dry at 70°C for 2 hours, ball mill for 3 hours, pass through a 600-mesh sieve, and add 1-butyl Base-3-ethylimidazolium chloride, microwave heating to 70°C, stir for 35min, 1500W ultrasonic for 3h, 3000r / min centrifuge for 15min, wash the solid with deionized water, dry at 70°C for 2h to obtain modified graphite;

[0063]S2. Pretreatment of polyester fibers: 100 parts by weight of polyester fibers are added to 200 parts by weight of ethanol aqueous solution containing 7wt% NaOH, wherein the ethanol content is 40wt%, heated and boiled for 25min, filtered, washed with deionized water, Obtain pretreated polyester fibers;

[0064] S3. Preparation of catalyst solution: cobalt chloride is dissol...

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Abstract

The invention provides modified rubber and a preparation method thereof, and belongs to the technical field of rubber. Comprising the following steps: S1, preparing modified graphite; s2, pretreatment of polyester fibers; s3, preparing a catalyst solution; s4, preparation of the polydopamine modified polyester fiber; s5, preparing modified polyester fibers; s6, treatment of an antioxidant; and S7, preparing the modified rubber. The raw materials are wide in source, the preparation method is simple, all the raw materials are mixed and vulcanized to form stable modified rubber, and the modified rubber has good aging resistance, low-temperature performance, weather resistance, mechanical performance, processability and physical and chemical performance and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a modified rubber and a preparation method thereof. Background technique [0002] Rubber occupies an important position in daily life and social and economic construction, and is widely used in tires, seals, shock-absorbing products, and conveyor belts because of its high strength, elasticity, wear resistance, and good insulation properties. However, in practical applications, in order to further improve the performance of rubber, some unsaturated rubber, such as isoprene rubber, polybutadiene rubber (BR), styrene-butadiene rubber (SBR), etc. Specific functional groups are introduced into the molecule to modify the rubber. [0003] In recent years, my country's rubber industry has developed rapidly, and rubber products are widely used in various industries. The nitrile rubber (NBR) produced by emulsion polymerization of butadiene and acrylonitrile has poor oil resistance and heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L67/00C08K7/00C08K9/04C08K5/134C08K5/3492
CPCC08L9/02C08L2201/08C08L2205/16C08L67/00C08K7/00C08K9/04C08K5/1345C08K5/34924
Inventor 施以进陈颖余昭军
Owner 施以进
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