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Graphene and preparation method and application thereof

A graphene and graphite technology, applied in the field of graphene and its preparation, can solve problems such as environmental pollution, increase graphene resistance, and safety hazards for preparation staff, and achieve low pollution, good electrical and thermal conductivity, and low energy consumption. Effect

Pending Publication Date: 2022-05-10
中安新材料(深圳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still uses strong oxidants to treat graphite, which destroys the surface electronic state topology of graphene, grafts groups such as hydroxyl or carboxyl groups, and increases the resistance of graphene, and the use of strong oxidants will also cause environmental pollution, and Potential safety hazards to preparation staff

Method used

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  • Graphene and preparation method and application thereof
  • Graphene and preparation method and application thereof
  • Graphene and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the preparation of graphene

[0040] Screening of raw materials: choose graphite with 5-10 microns and carbon content greater than 95%.

[0041] Pretreatment of raw materials: Ultrasonic high-frequency oscillation energy 28-80KMz, 1000-3000W, add nano-small molecule aqueous solution to the raw materials screened above, so that the weight ratio of nano-small molecule aqueous solution and graphite is 1:10-20, and then 2000-3000W Centrifuge at 5000rpm for 3-10 minutes. (nano small molecule aqueous solution is water cluster of small molecules, generally pure water is 50-70 water molecules as a group, small molecule water is less than 10 water molecules. For example, it can be prepared in this way: pure water is passed through a stainless steel tube, and the The obtained aqueous solution is an aqueous solution of small nanomolecules, in which the diameter of the stainless steel tube is 10 mm, the outer diameter is 16 mm, and the length is 40 cm. There are 3 to...

Embodiment 2

[0054] The preparation of embodiment 2 graphene soap

[0055] Raw materials: 0.1-0.3 grams of 1-5 layers of graphene obtained in Example 1, 150 g of white oil, 150 g of olive oil, 100 g of coconut oil, 100 g of palm oil, 73 g of sodium hydroxide, and 175 g of water.

[0056] Preparation method: Mix the above ingredients evenly.

[0057] Prepared soap see Figure 9 shown. After full saponification reaction, the finished soap is hard and thick, fine in texture, rich in foam and stable, and not easy to collapse during use. Saponification time: 20-30 minutes. Ripening period: 3-4 weeks. Suitable for skin type: Especially oily skin type, it has a good effect on deep cleaning and sterilization.

[0058] Effect verification: 1 gram of graphene soap is fully dissolved in 50 grams of bacterial water, and after 1 hour, the microorganisms are detected by the Lubang ATP fluorescent microorganism detector, which proves that the number of microorganisms is 1.2-2.0% of the original solu...

Embodiment 3

[0059] The preparation of embodiment 3 graphene facial cleanser

[0060] Raw materials: 1 teaspoon of salt, 3 teaspoons of honey, two egg whites, 1-2‰ of the 1-5 layers of graphene obtained in Example 1 (accounting for the total weight).

[0061] Cleansing milk production steps:

[0062] 1. Put the egg white and honey in a container and stir in one direction until fine foam is formed.

[0063] 2. Put the salt into a small bowl, put the stirred honey and egg white mixture into it, and stir clockwise until completely mixed.

[0064] 3. Add graphene accounting for 1-2‰ of the total weight ratio, continue stirring at 60-70°C for 2 hours, and let stand for 8 hours.

[0065] The first day after the experimenter adopts facial cleanser of the present invention to wash, it feels pain (nano carbon cuts the aging cutin of the epidermis, if the skin has wounds or inflammation, because the dermis of the skin has nerve endings, the thin and tender parts of the skin such as the eyes There...

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Abstract

The invention discloses graphene as well as a preparation method and application thereof. The method specifically comprises the following steps: adding a nano small molecule aqueous solution into graphite under ultrasonic high-frequency oscillation, so that the nano small molecule aqueous solution is intercalated between expanded graphite layers, and centrifuging to obtain a precipitate; and feeding the precipitate into a high-temperature kettle at 400-600 DEG C, rapidly gasifying the intercalated solution, rapidly expanding the volume, directly delaminating the expanded graphite at the moment, and collecting a product at an outlet, namely the graphene. The prepared graphene product can be used for preparing wash supplies, and grease near hair follicles of skin and hair roots and on hair can be thoroughly removed by utilizing the physical effect of the graphene nanosheets. The facial cleanser not only has a deep skin cleaning effect, but also can guide skin regeneration.

Description

technical field [0001] The invention relates to the field of preparation technology, in particular to a graphene and its preparation method and application. Background technique [0002] There are two main methods of synthesizing graphene: mechanical methods and chemical methods. Mechanical methods include micromechanical separation method, epitaxial method and heating SiC method; chemical methods are chemical reduction method and chemical dissociation method. [0003] The most common is micromechanical separation, where graphene flakes are directly cut from larger crystals. In 2004, Novoselovt et al. used this method to prepare single-layer graphene, which can exist stably in the external environment. The typical preparation method is to rub pyrolytic graphite with another material expanded or introduced defects, and the surface of bulk graphite will produce flake-like crystals, which contain single-layer graphene. But the disadvantage is that this method uses the flakes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19A61K8/19A61Q5/02A61Q19/10
CPCC01B32/19A61K8/19A61Q19/10A61Q5/02C01B2204/04C01B2204/02
Inventor 高荣盛
Owner 中安新材料(深圳)有限公司
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