Preparation method of graphene oxide composite natural latex sponge

A graphene composite and natural latex technology, which is applied in the field of composite sponges, can solve the problems of latex sponges such as poor cushioning resilience and low mechanical strength, and achieve good strength, good film-forming performance, and high safety.

Inactive Publication Date: 2019-08-20
陈松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem to be solved by the present invention: Aiming at the problems of poor cushioning resilience and low mechanical strength of the existing latex sponge, a preparation method of graphene oxide composite natural latex sponge is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] Flake graphite is put into a tube furnace with argon protection at a gas flow rate of 20mL / min and calcined at 1000℃ for 1h to obtain expanded graphite. Weigh 10 parts expanded graphite and 60 parts by weight respectively. 50% sulfuric acid, 10 parts 50% phosphoric acid, 30 parts potassium permanganate, 100 parts 30% hydrogen peroxide, add phosphoric acid to sulfuric acid, stir at 150r / min for 15min at room temperature to obtain a mixed acid solution , Add expanded graphite and potassium permanganate into the mixed acid solution, stir at 200r / min for 40min at room temperature, and then place it in a 40℃ water bath at 300r / min for 4h to obtain the reactant. Add hydrogen peroxide to the reactant Place it in ice water at 0℃ and stir at 300r / min for 2h to obtain the reaction mechanism liquid. Place the reaction mechanism liquid in a centrifuge at 8000r / min for 5min centrifugation, remove the lower solid, and use 1% hydrochloric acid with a mass concentration of Washed 3 time...

example 2

[0037] Flake graphite is in a tube furnace with argon protection at a gas flow rate of 25mL / min and calcined at 1100°C for 1h to obtain expanded graphite. Weigh 12 parts expanded graphite and 70 parts by weight respectively. 50% sulfuric acid, 12 parts 50% phosphoric acid, 35 parts potassium permanganate, 110 parts 30% hydrogen peroxide, add phosphoric acid to sulfuric acid, stir at 175r / min for 18min at room temperature to obtain a mixed acid solution , Add expanded graphite and potassium permanganate into the mixed acid solution, stir at 250r / min for 50min at room temperature, and then place it in a 50℃ water bath at 350r / min for 5h to obtain the reactant. Add hydrogen peroxide to the reactant Place it in ice water at 0℃ and stir at 350r / min for 3h to obtain the reaction mechanism liquid. Place the reaction mechanism liquid in a centrifuge and centrifuge at 8500r / min for 8min. Take the lower solid and use 1% hydrochloric acid with mass concentration. Wash 4 times, then wash 4...

example 3

[0039] Flake graphite is put into a tube furnace with argon protection at a gas flow rate of 30mL / min and calcined at 1200℃ for 2h to obtain expanded graphite. According to weight parts, weigh 15 parts of expanded graphite and 80 parts of mass concentration. 50% sulfuric acid, 15 parts 50% phosphoric acid, 40 parts potassium permanganate, 120 parts 30% hydrogen peroxide, add phosphoric acid to sulfuric acid, and stir at 200r / min for 20min at room temperature to obtain a mixed acid solution , Add expanded graphite and potassium permanganate into the mixed acid solution, stir at 300r / min for 60min at room temperature, and then place it in a 60℃ water bath at 400r / min for 6h to obtain the reactant, add hydrogen peroxide to the reactant Put it in ice water at 0℃ and stir at 400r / min for 4h to obtain the reaction mechanism liquid. Place the reaction mechanism liquid in a centrifuge and centrifuge at 9000r / min for 10 minutes. Take the lower solid and use 1% hydrochloric acid with a ma...

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Abstract

The invention relates to a preparation method of a graphene oxide composite natural latex sponge, and belongs to the technical field of composite sponges. According to the method provided by the invention, a modified natural latex sponge is added by adding graphene oxide, groups such as hydroxyl, carboxyl and epoxy groups among the graphene oxide can be linked by covalent bonds in the reaction process, so that resilience performance of the sponge is effectively improved; the high specific surface area of the graphene oxide can effectively improve adsorption capacity of the composite sponge; the graphene oxide composite natural latex sponge is prepared by adding casein, the casein has very good thermal stability and can be used for sterilization at a high temperature without destroying thestability and functionality, the casein can form a tough hydrophilic protein film on the surface of rubber particles of natural latex, and the film does not degenerate or shrink to destroy an emulsionsystem, so that the mechanical properties and resilience performance of the graphene oxide composite natural latex sponge can be effectively and steadily improved.

Description

Technical field [0001] The invention relates to a method for preparing graphene oxide composite natural rubber latex sponge, and belongs to the technical field of composite sponges. Background technique [0002] Natural rubber refers to an elastic solid made of natural rubber latex collected from rubber trees and processed through coagulation and drying processes. Its rubber hydrocarbon (polyisoprene) content is more than 90%, and it also contains a small amount of protein, fatty acid, sugar and ash. Natural rubber has high elasticity, high strength, wear resistance, tear resistance, acid and alkali resistance, corrosion resistance, excellent insulation, flexibility and other properties. It is widely used in industry and agriculture, national defense, transportation, transportation, machinery manufacturing, medicine The health field and daily life are irreplaceable by other materials. [0003] Latex sponge is widely used in industrial production and life because of its good air p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/10C08L7/02C08L89/00C08K3/04
CPCC08J9/10C08J2203/04C08J2307/02C08J2489/00C08K3/042
Inventor 陈松
Owner 陈松
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