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A kind of functionalized graphene and its preparation method and its application in rubber backing plate

A rubber backing plate and graphene technology, applied in the field of functionalized graphene and its preparation, can solve the problems of short life, low strength, poor elasticity, etc., and achieve the effects of excellent mechanical properties, anti-solvent extraction, and enhanced anti-aging ability.

Active Publication Date: 2022-03-18
HEBEI TIEKE YICHEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the speed of the train continues to increase, the currently used rubber pads have disadvantages such as low strength, poor elasticity, and short life, and it is difficult to meet the requirements of "same life, less maintenance" for railway transportation lines.

Method used

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  • A kind of functionalized graphene and its preparation method and its application in rubber backing plate
  • A kind of functionalized graphene and its preparation method and its application in rubber backing plate
  • A kind of functionalized graphene and its preparation method and its application in rubber backing plate

Examples

Experimental program
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Effect test

Embodiment 1

[0058] A functionalized graphene masterbatch, prepared from natural rubber latex, N,N'-di-sec-butyl-p-phenylenediamine and graphene oxide, the graphene oxide sheet has a diameter of 5-10 μm, a purity of 98%, and oxygen The content is 45%, and the preparation process is as follows:

[0059] (1) Add N,N'-di-sec-butyl-p-phenylenediamine and graphene oxide at a weight ratio of 3:1 to a mixed system of water and ethanol at a ratio of 1:4, heat to 85°C, and react for 5 hours . After that, it was washed with ethanol to obtain functionalized graphene I.

[0060] (2) Sonicate 4 g of functionalized graphene I, 150 ml of deionized water and 50 ml of ethanol for 30 min to obtain a functionalized graphene dispersion. Stir the functionalized graphene dispersion with 35g of natural latex (solid content: 62%) for 2 hours to obtain a mixed latex, then pour the mixed latex into a calcium chloride-ethanol mixed solution to break the emulsion, wash three times with distilled water, and dry it t...

Embodiment 2

[0068] A functionalized graphene oxide masterbatch, made from natural rubber latex, N,N`-bis(1,3-dimethylbutyl)-p-phenylenediamine and graphene oxide, the graphene oxide sheet diameter 8-10μm, purity 98%, oxygen content 45%, the preparation process is as follows:

[0069] (1) Add N,N`-bis(1,3-dimethylbutyl)-p-phenylenediamine and graphene oxide with a weight ratio of 5:1 to the mixed system of water and ethanol with a ratio of 1:5 , heated to 95°C, and reacted for 8h. After that, it was washed with ethanol to obtain functionalized graphene II.

[0070] (2) Sonicate 3 g of functionalized graphene II, 200 ml of deionized water and 50 ml of ethanol for 50 min to obtain a functionalized graphene dispersion. Stir the graphene dispersion with 17.5g of natural latex (solid content: 62%) for 2 hours to obtain a mixed latex, then pour the mixed latex into a mixed solution of calcium chloride and ethanol to break the emulsion, wash it with distilled water three times, and dry it. Mas...

Embodiment 3

[0072] A functionalized graphene masterbatch, prepared from natural rubber latex, N,N`-bis(1,3-dimethylbutyl)-p-phenylenediamine and graphene oxide, the graphene oxide sheet diameter is 5 -10μm, purity 98%, oxygen content 45%, the preparation process is as follows:

[0073] (1) Add N,N`-bis(1,3-dimethylbutyl)-p-phenylenediamine and graphene oxide at a weight ratio of 3:1 to a mixed system of water and ethanol at a ratio of 1:4 , heated to 85 ° C, the reaction 5h. After that, it was washed with ethanol to obtain functionalized graphene III.

[0074] (2) Sonicate 4g of functionalized graphene III, 150ml of deionized water and 50ml of ethanol for 30min to obtain a functionalized graphene dispersion. Stir the functionalized graphene dispersion with 35g of natural latex (solid content: 62%) for 2 hours to obtain a mixed latex, then pour the mixed latex into a calcium chloride-ethanol mixed solution to break the emulsion, wash three times with distilled water, and dry it to prepar...

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Abstract

The present invention relates to a kind of functionalized graphene, the raw material of described functionalized graphene comprises alkyl-p-phenylenediamine antioxidant and graphene oxide; The alkyl-p-phenylenediamine antioxidant is N,N' ‑Di-sec-butyl-p-phenylenediamine, N,N`‑bis(1,3‑dimethylbutyl)-p-phenylenediamine, N,N`‑bis(1,4‑dimethylpentyl) One or more of phenylenediamine, N,N`-diisooctyl-p-phenylenediamine, N,N`-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine. The functionalized graphene provided by the invention is applied to the existing railway rubber backing plate, and a high-performance rubber backing plate with excellent mechanical properties, good aging performance and large resistance value can be prepared.

Description

technical field [0001] The invention relates to a functionalized graphene and a preparation method thereof, and also relates to its application in rubber backing plates, belonging to the field of graphene modified rubber. Background technique [0002] Railway is the main mode of transportation for passenger and cargo transportation in our country, and it plays an important role in promoting social development. The railway system is mainly composed of the under-rail foundation, rails and fasteners. Among them, the fastener system to realize the reliable connection between the rail and the under-rail foundation must not only realize the reliability and stability of the connection, but also ensure the elasticity and rigidity of the track. The rubber backing plate is used between the concrete sleeper and the steel rail to provide elasticity for the track and is an important part of the fastener system. The under-rail rubber pad is installed between the rail and the concrete sle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K3/04C08J3/22C08L7/00C08L9/00C08K13/06C08K3/22C08K5/09
CPCC08K9/04C08K3/042C08J3/226C08L7/00C08J2407/00C08L2201/08C08K2003/2296C08L9/00C08K3/22C08K5/09C08K13/06
Inventor 仇鹏闫思梦崔永生刘雪宁杨凯魏少恒胡学欢邱成姜若琳
Owner HEBEI TIEKE YICHEN NEW MATERIAL TECH CO LTD
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