Unlock instant, AI-driven research and patent intelligence for your innovation.

Graphene hydrogel and preparation method thereof

A graphene hydrogel and graphene technology, applied in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of poor stability of functionalized metals and metal oxides, increased surface tension of hydrogels, Reliable and stable effects of silicone hydrogels and other issues, to achieve excellent mechanical strength and reliable stability

Inactive Publication Date: 2020-05-12
SUZHOU TONGLI PHOTOELECTRIC CO LTD
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-volume filling cannot form an effective closed circuit or conduction. High-volume filling will cause the surface tension of the hydrogel to increase, the surface adhesion will disappear, the elastic modulus will increase, and the compression will become smaller. Mechanical stress will be generated on electronic components during operation, and sensitive components will be damaged. device
Moreover, the poor stability of functionalized metals and metal oxides affects the reliability and stability of silicone hydrogels, and also limits the application of hydrogels in various fields of the electronics industry.

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
  • Graphene hydrogel and preparation method thereof
  • Graphene hydrogel and preparation method thereof
  • Graphene hydrogel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: A kind of graphene hydrogel and preparation method

[0037]A kind of graphene hydrogel, described graphene hydrogel comprises the following components of each parts by weight:

[0038]

[0039] The kinematic viscosity of the vinyl-terminated polydimethylsiloxane is within 10,000-100,000 centipoise at normal temperature, the average molecular weight is within 100,000-1,000,000, and the vinyl functional group content is within 0.1%-5%.

[0040] The kinematic viscosity of the vinyl-terminated polymethylvinyl siloxane is within 1000-10000 centipoise at normal temperature, the average molecular weight is within 10000-100000, and the vinyl functional group content is within 0.1%-5%.

[0041] The structural formula of the terminal methyl-side hydrogen-containing polysiloxane is as follows:

[0042] [(CH 3 ) 3 SiO 1 / 2 ] a [(CH 3 )R 1 SiO 2 / 2 ] b [R 2 SiO 3 / 2 ] c [SiO 4 / 2 ] d

[0043] Among them, R 1 and R 2 It is a hydrogen group or a hydrogen-...

Embodiment 2

[0063] Embodiment 2: A kind of graphene hydrogel and preparation method

[0064] A kind of graphene hydrogel, the raw material formula of described graphene hydrogel comprises the raw material of following weight portion:

[0065]

[0066] A preferred embodiment is: the vinyl-terminated polydimethylsiloxane has a kinematic viscosity of 25,000 at 25°C, an average molecular weight of 800,000-1,000,000, and a vinyl functional group content of 0.4%.

[0067] A preferred embodiment is: the vinyl-terminated polymethylvinylsiloxane has a kinematic viscosity of 4,500 centipoise at 25°C, an average molecular weight of 9,000-100,000, and a vinyl functional group content of within 4%.

[0068] A preferred embodiment is: the structural formula of the terminal methyl-side hydrogen-containing polysiloxane is as follows:

[0069] [(CH 3 ) 3 SiO 1 / 2 ] a [(CH 3 )R 1 SiO 2 / 2 ] b [R 2 SiO 3 / 2 ] c [SiO 4 / 2 ] d

[0070] Among them, R 1 stands for Hydrogen, R 2 represents -COOH,...

Embodiment 3

[0089] Embodiment 3: A kind of graphene hydrogel and preparation method

[0090] A kind of graphene hydrogel, the raw material formula of described graphene hydrogel comprises the raw material of following weight portion:

[0091]

[0092] A preferred embodiment is: the vinyl-terminated polydimethylsiloxane has a kinematic viscosity of 10,000, an average molecular weight of 100,000, and a vinyl functional group content of 0.1% at 25°C.

[0093] A preferred embodiment is: the vinyl-terminated polymethylvinylsiloxane has a kinematic viscosity of 1000 centipoise at 25°C, an average molecular weight of 10000, and a vinyl functional group content of within 0.1%.

[0094] A preferred embodiment is: the structural formula of the terminal methyl-side hydrogen-containing polysiloxane is as follows:

[0095] [(CH 3 ) 3 SiO 1 / 2 ] a [(CH 3 )R 1 SiO 2 / 2 ] b [R 2 SiO 3 / 2 ] c [SiO 4 / 2 ] d

[0096] Among them, R 1 stands for hydroxyl, R 2 Represents a hydrogen group, where...

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
densityaaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a graphene hydrogel and a preparation method thereof. The graphene hydrogel is prepared from the following components in parts by weight: 10 to 50 parts of vinyl-terminated polydimethylsiloxane, 10 to 50 parts of vinyl-terminated polymethyl vinyl siloxane, 1 to 10 parts of polysiloxane with methyl terminal side containing hydrogen, 1 to 10 parts of polysiloxane with a hydrogen-containing terminal, 0.1 to 5 parts of a silicon hydrogen chain extender, 10 to 50 parts of graphene, 1 to 10 parts of carbon nanotubes, 0.1 to 2 parts of a tackifier, 0.1 to 2 parts of a carboninterface treating agent, 1-5 parts of an inert diluent and 0.01-1 part of an alkynol inhibitor, and 0.01 to 1 part of a platinum catalyst. Compared with the prior art, the graphene hydrogel and the graphene-based electromagnetic and heat shielding organic silicon material have the advantages that the excellent electronic effect, heat effect and other physical properties of graphene are utilized,the electromagnetic and heat simultaneous shielding performance is achieved, and the excellent mechanical strength and reliable stability are achieved through the synergistic effect of all the components.

Description

technical field [0001] The invention belongs to the technical field of adhesive materials, and relates to a graphene hydrogel and a preparation method thereof. Background technique [0002] The main chain of silicone materials is composed of silicon-oxygen chain links, and the side chains are composed of organic groups connected to silicon atoms in the main chain. The unique structure makes silicone materials have both the properties of inorganic and organic materials, such as temperature resistance, weather resistance and low temperature resistance. Surface energy and other factors have continuously broadened the application fields of silicone materials, forming a unique material system. Silicone hydrogel is an indispensable and important part of the application of silicone materials. The advantages of hydrogel are soft texture and low elastic modulus. It is widely used in the bonding, sealing and protection of electronic components. The modulus of elasticity remains basic...

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): C09J183/07C09J183/05C09J11/04
CPCC08K2201/001C08K2201/011C08L2203/206C08L2205/025C08L2205/035C09J11/04C09J183/04C08L83/04C08K13/02C08K3/042C08K3/041C08K5/55
Inventor 蒋璐瑶
Owner SUZHOU TONGLI PHOTOELECTRIC CO LTD