Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nano-silica composite graphene cooling liquid and preparation method thereof

A technology of composite graphene and silica, applied in chemical instruments and methods, materials for heat exchange, etc., can solve problems such as hindering graphene research and application, difficult to stably disperse, weak interaction force, etc., and achieve excellent stability. properties, excellent thermal conductivity, and the effect of hindering agglomeration

Active Publication Date: 2020-06-23
SHANDONG OBO NEW MATERIAL CO LTD
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, graphene still has many problems and constraints. Graphene is a two-dimensional crystal material with an unconventional structure. Its interior is composed of many benzene six-membered rings, and the benzene six-membered rings do not contain Any unstable chemical bonds have high chemical stability, and the surface of graphene is in an inert state, and the interaction force with other media such as solvents is very weak, but there is a strong van der Waals attraction between the sheets, so it is easy to Accumulation and precipitation occur, it is not easy to disperse stably in water or common organic solvents, and it is easy to agglomerate, which greatly hinders the further research and application of graphene

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nano-silica composite graphene cooling liquid and preparation method thereof
  • Nano-silica composite graphene cooling liquid and preparation method thereof
  • Nano-silica composite graphene cooling liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0076] The present invention also provides a method for preparing a silicon dioxide composite graphene cooling liquid as described in any one of the above technical solutions, characterized in that, comprising the following steps:

[0077] 1) After continuous mixing of silicon dioxide composite graphene, water, ethylene glycol and other additives, a silicon dioxide composite graphene cooling liquid is obtained.

[0078] The present invention is to the selection and composition of raw materials in the preparation method of described silicon dioxide composite graphene cooling liquid, and corresponding optimization principle, and the selection and composition of corresponding raw materials in the aforementioned silicon dioxide composite graphene cooling liquid, and Corresponding optimization principles can all be corresponding, and details will not be repeated here.

[0079] In principle, the present invention has no special restrictions on the source and preparation method of th...

Embodiment 1

[0125] 1. Dissolve graphene oxide in an aqueous solution, ultrasonically and stir at room temperature to obtain 25 g of graphene oxide dispersion. Among them, the mass fraction of the graphene oxide dispersion solution is 8‰, the ultrasonic time is 120min, the ultrasonic frequency is 40KHz, and the stirring speed is 250r / min;

[0126] 2. Add 40 mg sodium hydroxide and 1.0 g cetyltrimethylammonium bromide to the graphene oxide dispersion obtained in step 1, continue stirring for 180 min, and rotate at a speed of 300 r / min to obtain a mixed solution A;

[0127] 3. Add 0.8mLTEOS tetraethyl orthosilicate to the mixed solution A obtained in step 2, and continue to stir for 120min at a speed of 300r / min to obtain a mixed solution B;

[0128] 4. Reflux the mixed solution B obtained in step 3 at 120° C. for 18 hours, and magnetically stir at 300 r / min.

[0129] 5. Suction filter the mixed solution C obtained in step 4 to obtain a filter cake, and dry it in an oven for 60 minutes at a...

Embodiment 2

[0145] Mix 60L ethylene glycol with 40L high-purity water, stir evenly, add 2.5kg tolutriazole, 1kg isooctanoic acid, 1.5kg tolyltriazole, 1kg heptanoic acid, stir ultrasonically for 30 minutes, then add thermal conductivity additive silica Composite graphene 0.1kg, ultrasonically stirred for 1h, after the heat conduction additive was uniformly dispersed, added 1kg of sodium benzoate, 0.5kg of borax, 0.5kg of dimethyl silicone oil, and stirred for 1h to obtain nano-silica composite graphene cooling liquid.

[0146] The thermal conductivity of the nano-silica composite graphene cooling liquid prepared in Example 2 of the present invention was tested.

[0147] Among them, the freezing point is <-45°C, and the specific thermal conductivity is shown in Table 1. Table 1 is a comparison of the thermal conductivity of the nano-silica composite graphene cooling liquid prepared in the embodiment of the present invention and the common cooling liquid of the same grade.

[0148] Corrosi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a silicon dioxide composite graphene cooling liquid. The silicon dioxide composite graphene cooling liquid comprises 0.01-3 parts by weight of silicon dioxide composite graphene, 35-55 parts by weight of ethylene glycol, 45-65 parts by weight of water and 1-10 parts by weight of other assistants. Nano silicon dioxide composite graphene is used as a heat-conducting additive,especially a base solution of dihydric alcohol and water is adopted, and assistants such as a specific corrosion inhibitor, an antifoaming agent and the like are matched according to a certain ratio,and are uniformly stirred to form the cooling liquid, and a heat-conducting additive is uniformly dispersed in the liquid, so that the heat conductivity is improved, and the agglomeration of reduced graphene is prevented. Silicon dioxide composite graphene is adopted, so that the surface of graphene becomes inorganic, the hydrophilicity of graphene is improved, and the agglomeration of graphene can be effectively hindered by silicon dioxide; meanwhile, ethylene glycol also has an inhibiting effect on agglomeration of graphene, the characteristic of high thermal conductivity of graphene is better exerted, and the thermal conductivity of the cooling liquid is improved.

Description

technical field [0001] The invention belongs to the technical field of cooling liquid synthesis, and relates to a silicon dioxide composite graphene cooling liquid and a preparation method thereof, in particular to a nano silicon dioxide composite graphene cooling liquid and a preparation method thereof. Background technique [0002] Coolant is one of the important auxiliary liquids to maintain the normal operating temperature of internal combustion engines and other equipment and ensure the normal operation of the cooling system. It is as important as lubricating oil. The performance of the coolant directly affects the normal operation and life of the internal combustion engine. Initially, water was usually used as the cooling liquid, but its biggest disadvantage is that water is easy to freeze under low temperature conditions, expand in volume, and even damage the cooling system, and then began to use water and ethylene glycol as the base liquid, supplemented by various ad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 刘磊郑申棵赵永彬马立军
Owner SHANDONG OBO NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com