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

Preparation method and application of PDMS (polydimethylsiloxane)-magnetic nano-particle composite optical film

A magnetic nanoparticle, PDMS- technology, applied in optics, optical components, instruments, etc., can solve the problem of very little exploration of micro-scale MRE optical performance.

Inactive Publication Date: 2015-04-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the research and application of MRE have mostly focused on large-scale materials, and there is very little exploration on the optical properties of micro-scale MRE.

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
  • Preparation method and application of PDMS (polydimethylsiloxane)-magnetic nano-particle composite optical film
  • Preparation method and application of PDMS (polydimethylsiloxane)-magnetic nano-particle composite optical film
  • Preparation method and application of PDMS (polydimethylsiloxane)-magnetic nano-particle composite optical film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. The preparation process of a new polymer-based nanocomposite optical film with magnetorheological elastomer properties:

[0030] (1) Preparation of PDMS-magnetic nanoparticles mixed solution

[0031] PDMS is a silicone rubber elastomer widely used in the field of microelectromechanical systems. It has high optical transparency, stable physical and chemical properties, and biocompatibility. The PDMS used in the present invention is formed by mixing a prepolymer and a curing agent (Dow Corning Sylgard 184). The preparation of PDMS-magnetic nanoparticle mixed solution comprises the following steps:

[0032] 1) Mix the PDMS prepolymer and curing agent (DowCorning Sylgard 184) at a weight ratio of 10:1, stir evenly, put the mixture into a 40KHz ultrasonic oscillator and vibrate for 5 minutes to remove bubbles, and at the same time promote its further thorough mixing;

[0033] 2) Mix the mixture obtained in step 1) with chloroform at a weight ratio of 1:1 to form a mixed...

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
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and application of a PDMS (polydimethylsiloxane)-magnetic nano-particle composite optical film, and belongs to the field of optical micro electro mechanical systems and polymer optical materials. The preparation method comprises the following steps: mixing a mixture consisting of a PDMS prepolymer and a curing agent with trichloromethane and magnetic nano-particles, and performing ultrasonic oscillation to obtain a PDMS-magnetic nano-particle mixed solution; and then coating the obtained PDMS-magnetic nano-particle mixed solution to a quartz plate by adopting a spin coating technology, obtaining an anisotropic composite material coated film under the action of a strong magnetic field of 500mT, and baking to obtain the PDMS-magnetic nano-particle composite optical film. The novel polymer based nano composite film with characteristics of a magneto-rheological elastomer is relatively high in optical transparency, and the optical transmittance of the film can be adjusted by applying an external magnetic field, so that the PDMS-magnetic nano-particle composite optical film is applicable in the field of the optical micro electro mechanical systems.

Description

technical field [0001] The invention belongs to the field of optical micro-electromechanical systems and polymer optical materials, in particular to a preparation method and application of a PDMS-magnetic nanoparticle composite optical film. Background technique [0002] Magnetorheological Elastomer (MRE) is an intelligent functional material with broad application prospects. It is generally composed of a non-magnetic elastic polymer matrix and micron-sized magnetic particles suspended in it. Its mechanical and electrical properties can be controlled by applying an external magnetic field. control. MRE has some special functions, such as magnetoelasticity, magnetoresistance, magnetostriction, piezoelectric resistance, thermal resistance, etc., so it has great potential in the application of sensors and actuators. So far, the research and application of MRE have mostly focused on large-scale materials, and there are very few explorations on the optical properties of micro-sc...

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): C08J7/00C08J5/18C08L83/04G02B1/04
Inventor 彭倍张遒姝杨洋李迪李辉
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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