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Multifunctional composite material

A composite material and performance technology, which is applied in the field of preparation of multifunctional composite materials, can solve the problems of particle settlement and low mechanical properties, and achieve the effect of performance improvement and excellent shear hardening performance

Active Publication Date: 2014-09-17
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention successfully solves the problems of particle sedimentation and low mechanical properties of magnetorheological materials, and at the same time endows the magnetic field controllable proper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Get the raw material of following mass fraction:

[0036] Dimethicone: 80%

[0037] Pyroboric acid: 5%

[0038] Ethanol: 15%

[0039] The preparation steps of borosiloxane matrix are as follows:

[0040] (1) Treat boric acid at 160°C to obtain pyroboric acid.

[0041] (2) Add the above pyroboric acid into dimethylsiloxane, then add ethanol, mix well,

[0042] (3) The above mixture is polymerized at a high temperature of 240° C. and cooled to obtain the desired polymer matrix.

Embodiment 2

[0044] Get the raw material of following mass fraction:

[0045] Dimethicone: 78%

[0046] Pyroboric acid: 10%

[0047] Ethanol: 12%

[0048] Others are with embodiment 1.

Embodiment 3

[0050] Get the raw material of following mass fraction:

[0051] Dimethicone: 70%

[0052] Pyroboric acid: 20%

[0053] Ethanol: 10%

[0054] Others are with embodiment 1.

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Abstract

The invention relates to a composite material with shear hardening and magneto-rheological properties and a preparation method of the composite material. The composite material with shear hardening and magneto-rheological properties comprises a product obtained by carrying out heat treatment on a mixture comprising a boron-siloxane matrix, a magnetic particle, a curing agent and a plasticizer.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, and in particular relates to a preparation method of a multifunctional composite material with excellent impact hardening performance and magnetorheological performance. Background technique [0002] Smart materials are composite materials that can respond to external stimuli (such as light, electricity, magnetism, sound, etc.) and change their properties in time. Among them, the magnetorheological material is a smart material prepared by dispersing magnetic particles into a suitable carrier. Due to the dipole-dipole interaction between magnetic particles, the properties of magnetorheological materials can be changed by an external magnetic field. At present, magnetorheological materials have been widely used in the fields of dampers, vibration control, vibration isolators and magnetoresistor sensors. [0003] Among them, the most common magnetorheological material is magnetorheol...

Claims

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Application Information

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IPC IPC(8): C08L83/00C08K13/02C08K3/08C08K5/14C08K5/5419C08K3/22C08G77/00
Inventor 龚兴龙江万权宣守虎王胜
Owner UNIV OF SCI & TECH OF CHINA