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Preparation method for graphene oxide treated hybrid chopped fiber reinforced polyether sulfone composite material

A short-cut fiber and composite material technology, which is applied in the preparation of graphene oxide-treated hybrid chopped fiber-reinforced polyethersulfone composite materials, can solve the problems of expensive CF, high brittleness of CF-reinforced resin-based composite materials, and wide-ranging applications, etc. problems, to achieve the effect of simple production, reduced orientation, and increased isotropy

Inactive Publication Date: 2016-07-20
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Carbon fiber (CF) has been widely used in engineering because of its excellent performance. However, CF reinforced resin matrix composites are brittle and show obvious brittle failure modes under impact loads. At the same time, the expensive price of CF also limits its wider application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Use sodium nitrate, concentrated sulfuric acid and potassium permanganate to oxidize natural graphite into graphite oxide. The ratio of the oxidant to graphite is 1g: 0.5g: 20mL: 3g. The obtained graphite oxide is configured into an aqueous solution and then ultrasonically Stripping (power 1000W stripping 1.5h) to obtain a graphene oxide aqueous solution with a mass fraction of 0.35%;

[0032] (2) Mix 56g of glass fiber and 119g of carbon fiber (volume fraction 1:3), the fiber length is 6mm, wash it twice with deionized water, put it in an oven and dry it at 100°C for 3h;

[0033] (3) Weigh 250g of graphene oxide aqueous solution, put the dried fibers into the solution, completely soak the hybrid fibers in the graphene oxide aqueous solution, then stir mechanically to make the fibers evenly dispersed in the graphene oxide solution, and continue stirring for 24 hours ;

[0034] (4) Put the treated fiber and aqueous solution into an oven, dry and remove moisture; sti...

Embodiment 2

[0037] (1) Natural graphite is oxidized into graphite oxide with sodium nitrate, concentrated sulfuric acid and potassium permanganate, the ratio of described oxidizer and graphite is, 1g: 0.5g: 22mL: 3.2g, the graphite oxide obtained is configured into aqueous solution and then Ultrasonic peeling (power 1500W peeling 1h) to obtain a graphene oxide aqueous solution with a mass fraction of 0.30%;

[0038] (2) Mix 109g of glass fiber and 76g of carbon fiber (volume fraction 1:1), the fiber length is 10mm, wash it twice with deionized water, put it in an oven and dry it at 100°C for 3h;

[0039] (3) Weigh 264g of graphene oxide aqueous solution, put the dried fiber into the solution, make the mixed fiber completely immersed in the graphene oxide aqueous solution, then mechanically stir to make the fiber evenly dispersed in the graphene oxide solution, and keep stirring for 24h ;

[0040] (4) Put the treated fiber and aqueous solution into an oven, dry and remove moisture; still ...

Embodiment 3

[0043] (1) Natural graphite is oxidized into graphite oxide with sodium nitrate, concentrated sulfuric acid and potassium permanganate, and the ratio of described oxidizing agent and graphite is, 1g: 0.5g: 23mL: 3.3g, the graphite oxide obtained is configured into aqueous solution and then Ultrasonic peeling (power 1300W peeling 1.5h) to obtain a graphene oxide aqueous solution with a mass fraction of 0.33%;

[0044] (2) Mix 159g of glass fiber and 39g of carbon fiber (volume fraction 3:1), the fiber length is 8mm, wash it twice with deionized water, put it in an oven and dry it at 100°C for 3h;

[0045] (3) Weigh 282g of graphene oxide aqueous solution, put the dried fibers into the solution, completely soak the mixed fibers in the graphene oxide aqueous solution, then stir mechanically to make the fibers evenly dispersed in the graphene oxide solution, and keep stirring for 24 hours ;

[0046] (4) Put the treated fiber and aqueous solution into an oven, dry and remove moist...

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Abstract

The invention belongs to the technical field of fiber reinforced thermoplastic composite materials, and particularly relates to a preparation method for a graphene oxide treated hybrid chopped fiber reinforced polyether sulfone composite material. The preparation method specifically comprises the following steps: blending, washing and drying fiberglass and carbon fibers; preparing an aqueous solution of graphene oxide at a certain concentration; adding the aqueous solution of graphene oxide into the hybrid fibers; drying the hybrid fibers treated with graphene oxide in a drying oven to remove water; mixing the treated hybrid short fibers and polyether sulfone particles, and performing melting, extrusion and granulation to prepare the hybrid chopped fiber reinforced polyether sulfone composite material. According to the method, the bonding strength of an interface of the fibers of the prepared composite material and polyether sulfone resin is strong, equipment adopted for a preparation process is simple, convenient to operate and low in energy consumption and cost, and the composite material has excellent mechanical performance and strength designability.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced thermoplastic composite materials, and in particular relates to a method for preparing graphene oxide-treated hybrid chopped fiber-reinforced polyethersulfone composite materials. Background technique [0002] High-performance thermoplastic resin-based composites have good mechanical properties, many molding methods, simple processes, and can be processed multiple times. They are receiving more and more attention in the fields of automobile industry, aerospace and other fields. Among them, polyethersulfone (PES) with aromatic structure is an attractive high-performance engineering plastic, which has excellent mechanical properties, thermal stability, chemical stability, high temperature creep resistance, etc., and its Tg is 225 ℃, the long-term use temperature can reach 180 ℃, and the polyethersulfone composite material filled with appropriate amount of fiber is a composite material with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08K7/06C08K7/14C08K9/10C08K9/02
CPCC08K7/06C08K7/14C08K9/02C08K9/10
Inventor 杜森森付绍云李飞肖红梅
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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