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

Sawtooth-shaped conductive silicone rubber nano composite material as well as preparation method and application thereof

A rubber nano, composite material technology, applied in additive processing, electrical components, magnetic field/electric field shielding, etc., can solve the problems of limited application, poor electromagnetic shielding effect of thin films, etc., to achieve high electromagnetic shielding efficiency, excellent electromagnetic shielding efficiency , the effect of expanding the possibility of application

Active Publication Date: 2022-08-05
QINGDAO UNIV OF SCI & TECH
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple and easy to operate, but the actual electromagnetic shielding effect of the film is not good, which limits the possibility of its practical application

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
  • Sawtooth-shaped conductive silicone rubber nano composite material as well as preparation method and application thereof
  • Sawtooth-shaped conductive silicone rubber nano composite material as well as preparation method and application thereof
  • Sawtooth-shaped conductive silicone rubber nano composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Using PMMA as a raw material, a 3D fused deposition (FDM) molding technique is used to print a serrated mold. The serrated mold contains a serrated cavity. In this embodiment, the included angle of each serration in the cavity of the mold is 90°. The mold was soaked in an ethanol solution of 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (0.5 wt %) for 2 h and placed in a 60° C. oven to dry (30 min) and then closed. A hydrophobic coating is formed on the surface of the mold, which reduces the adhesion between the material and the inner surface of the mold and facilitates demoulding in the subsequent steps.

[0038] In order to simply compare the effect of the zigzag angle on the material properties, in Example 1, the subsequent zigzag-shaped three-dimensional conductive gel network and silicone rubber backfilling / curing steps (material ratio) are the same as those in Comparative Example 1. The detailed preparation process and parameters As follows:

[0039] 1) Synthesis ...

Embodiment 2

[0048] Using polycarbonate (PC) as a raw material, a serrated mold is obtained by 3D printing technology. The serrated mold contains a serrated inner cavity. In this embodiment, the included angle of each serration in the inner cavity of the mold is 75°. The mold was soaked in an ethanol solution of 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (0.5 wt %) for 2 h and placed in a 60° C. oven to dry (30 min) and then closed.

[0049] 1) Synthesis of 3D zigzag silver nanowires / MXene conductive aerogel (with an included angle of 75°)

[0050] a) MXene (Ti 3 C 2 T x ) preparation of aqueous dispersions

[0051] Add 20ml HCl (9M) and 1g LiF to the PTFE vial, stir at 800r / min for 30min, fully dissolve, and slowly add 1g Ti 3 AlC 2 , 35 ℃ reaction 24h. The product was washed by centrifugation to pH ≥ 6. Then ultrasonic peeling for 1h, centrifugation (3500r / min, 30min) to take the upper layer is the required MXene (Ti 3 C 2 T x ), which was configured into a certain concentrat...

Embodiment 3

[0058] Using acrylonitrile-butadiene-styrene copolymer (ABS resin) as raw material, 3D melt printing is used to obtain a serrated mold with an included angle of 60°. The serrated mold contains a serrated inner cavity. The included angle of each serration in the cavity is 60°. The mold was placed in an ethanol solution (0.5 wt %) of 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane for 2 hours, and then dried in an oven at 60° C. and then closed.

[0059] 1) Synthesis of 3D zigzag polyaniline nanowires / MXene aerogel (with an included angle of 60°)

[0060] The preparation method of the two-dimensional MXene nanosheet aqueous dispersion in this example is the same as the steps in Example 2. The polyaniline nanowire aqueous dispersion is mixed with the synthesized MXene nanosheet aqueous dispersion (the mass ratio of the two is 2 / 4; the above-mentioned mixed solution is injected into the zigzag mold of the above-mentioned ABS (the included angle is 60°) , and then placed in a closed...

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
Electromagnetic shielding effectivenessaaaaaaaaaa
Electromagnetic shielding effectivenessaaaaaaaaaa
Electromagnetic shielding effectivenessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a zigzag conductive silicone rubber nano composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, constructing a three-dimensional continuous conductive aerogel network in a zigzag mold by using a high-conductivity carbon nanomaterial; and filling the gel network with a silicone rubber prepolymer, and curing / demolding to form the flexible zigzag conductive silicone rubber material with a specific included angle. The composite material can show excellent conductivity under the condition of extremely low filler content (less than or equal to 5.0 wt%). Besides, under the condition that the content of the conductive filler is kept fixed, the electromagnetic shielding effectiveness value of the material can be effectively adjusted by simply adjusting and controlling the included angle (15-120 degrees) of the zigzag material, for example, the electromagnetic shielding effectiveness under the X wave band (8.2-12.4 GHz) can be controllably adjusted within the range of 31.0-48.3 dB. Meanwhile, the macroscopic zigzag structure also has excellent angle stability, and the angle of the zigzag structure is not obviously changed after 1000 times of cyclic compression-tensile tests.

Description

Technical field: [0001] The invention relates to the field of electromagnetic shielding, in particular to a conductive silicone rubber nanocomposite material for electromagnetic shielding with a zigzag macro structure design. Background technique: [0002] With the rapid rise of 5G technology, electromagnetic waves play an increasingly important role in our daily lives. However, the wide application of electromagnetic waves has also brought many adverse effects, such as electromagnetic interference, electromagnetic pollution, etc., which have brought significant harm to human health and the use of precision electronic instruments. Electromagnetic shielding technology is one of the important means to effectively suppress electromagnetic pollution. As the core element of electromagnetic shielding technology, the design and preparation of high-performance electromagnetic shielding materials has become a research hotspot in this field. New conductive polymer-based composites h...

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
IPC IPC(8): C08L83/04C08K3/04C08K3/14C08K7/00C08K3/08C08L79/02C08L65/00H05K9/00B33Y70/10
CPCC08K3/041C08K3/042C08K3/14C08K7/00C08K3/08C08L83/04H05K9/0081B33Y70/10C08K2201/001C08K2201/011C08K2003/0806C08L79/02C08L65/00
Inventor 张广法闫业海张跃康赵素敏赵平张笑涵蔺浩亭
Owner QINGDAO UNIV OF SCI & TECH
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