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Calcium copper titanate (CCTO)/polydimethylsiloxane (PDMS) composite flexible foam as well as preparation method and application thereof

A technology of dimethyl siloxane and copper calcium titanate, which is applied in fluid pressure measurement, instruments, and measuring devices using capacitance changes, and can solve problems such as low sensitivity of pressure sensors, insufficient elasticity and flexibility, and complex production processes , to achieve the effects of excellent mechanical properties, improved sensitivity, and low process cost

Inactive Publication Date: 2017-07-07
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a copper calcium titanate / polydimethylsiloxane composite flexible foam and its preparation method and application, so as to solve the insufficient elasticity and flexibility of CCTO / PDMS composite flexible foam, production The process is complex and the pressure sensor made of CCTO / PDMS composite flexible foam has low sensitivity

Method used

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  • Calcium copper titanate (CCTO)/polydimethylsiloxane (PDMS) composite flexible foam as well as preparation method and application thereof
  • Calcium copper titanate (CCTO)/polydimethylsiloxane (PDMS) composite flexible foam as well as preparation method and application thereof
  • Calcium copper titanate (CCTO)/polydimethylsiloxane (PDMS) composite flexible foam as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A copper calcium titanate / polydimethylsiloxane composite flexible foam, comprising the following components in parts by weight: 10 parts of PDMS precursor, 1.5 parts of dimethyl silicone oil, 0.1 part of CCTO powder, and silane coupling agent KH5500 .005 parts, 1 part dimethylmethylhydrogensiloxane, 17 parts sucrose powder, and 5 parts ethanol.

[0033] The preparation method of above-mentioned calcium copper titanate / polydimethylsiloxane composite flexible foam comprises the following steps:

[0034] (1) According to the formula, mix CCTO powder, PDMS precursor, dimethyl silicone oil, ethanol, and silane coupling agent KH550 evenly, put them in a ball mill jar and mill them for 20 minutes to obtain mixture I; among them, the particle size of CCTO powder is 220nm ;

[0035] (2) Add dimethylmethylhydrogensiloxane and sucrose powder with a particle size of 110 μm to mixture I, and continue grinding for 20 minutes to obtain mixture II;

[0036] (3) Put the mixture II in ...

Embodiment 2

[0040] A copper calcium titanate / polydimethylsiloxane composite flexible foam, comprising the following components in parts by weight: 10 parts of PDMS precursor, 1.5 parts of dimethyl silicone oil, 0.3 parts of CCTO powder, and silane coupling agent KH5500 .01 parts, 1 part dimethylmethylhydrogensiloxane, 17 parts sucrose powder, and 8 parts ethanol.

[0041] The preparation method of above-mentioned calcium copper titanate / polydimethylsiloxane composite flexible foam comprises the following steps:

[0042] (1) According to the formula, mix CCTO powder, PDMS precursor, dimethyl silicone oil, ethanol, and silane coupling agent KH550 evenly, and place them in a ball mill jar for ball milling for 30 minutes to obtain mixture I; among them, the particle size of CCTO powder is 400nm ;

[0043] (2) Add dimethylmethylhydrogensiloxane and sucrose powder with a particle size of 110 μm to mixture I, and continue grinding for 35 minutes to obtain mixture II;

[0044] (3) Put the mixtu...

Embodiment 3

[0048] A copper calcium titanate / polydimethylsiloxane composite flexible foam, comprising the following components in parts by weight: 10 parts of PDMS precursor, 1.5 parts of dimethyl silicone oil, 0.5 parts of CCTO powder, and silane coupling agent KH5500 .025 parts, 1 part dimethyl methylhydrogen siloxane, 17 parts sucrose powder, and 10 parts ethanol.

[0049] The preparation method of above-mentioned calcium copper titanate / polydimethylsiloxane composite flexible foam comprises the following steps:

[0050] (1) According to the formula, mix CCTO powder, PDMS precursor, dimethyl silicone oil, ethanol, and silane coupling agent KH550 evenly, and put them in a ball mill jar for ball milling for 28 minutes to obtain mixture I; among them, the particle size of CCTO powder is 340nm ;

[0051] (2) Add dimethylmethylhydrogensiloxane and sucrose powder with a particle size of 90 μm to mixture I, and continue grinding for 35 minutes to obtain mixture II;

[0052] (3) Put the mixt...

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Abstract

The invention discloses calcium copper titanate / polydimethylsiloxane (PDMS) composite flexible foam as well as a preparation method and application thereof. The composite flexible foam contains the following components in parts by weight: 10-12 parts of a PDMS precursor, 1-2 parts of dimethicone, 0.3-4 parts of CCTO powder, 0.03-0.2 part of a silane coupling agent, 1-1.2 parts of a curing agent, 13-18 parts of a pore forming substance and 5-15 parts of ethanol. The preparation method comprises the following steps: (1) mixing the CCTO powder, the PDMS precursor, the dimethicone, ethanol and the silane coupling agent according to a formula, and performing ball milling; (2) adding the pore forming substance and the curing agent, and continuing to grind; (3) performing mold pressing and maintaining the temperature; and (4) drying, thereby obtaining the CCTO / PDMS composite flexible foam. The method disclosed by the invention is simple in process and low in cost, the prepared CCTO / PDMS composite flexible foam has excellent elasticity and flexibility, and the prepared pressure sensor is high in sensitivity and wide in range.

Description

technical field [0001] The invention belongs to the technical field of flexible composite functional electronic materials and sensitive devices, and in particular relates to a copper calcium titanate / polydimethylsiloxane composite flexible foam and its preparation method and application. Background technique [0002] "Electronic skin" integrating multiple sensing functions is ubiquitous in next-generation smart platform applications: such as wearable smart health monitoring, sensitive touch, artificial limbs, multifunctional robot skin, etc. will be widely used. Similar to human skin, "electronic skin" realizes the function of artificial tactile system by converting pressure, temperature, humidity, etc. into electrical signals. Flexibility is the basic requirement for "electronic skin", and flexible organic semiconductor materials are ideal materials for the development of current flexible integrated electronic devices. Research focuses on the preparation of organic materia...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K3/24C08K5/544C08K5/5425C08J9/00G01L1/14G01L9/12
CPCC08L83/04C08J9/00C08J2383/04C08L2203/14C08L2203/20C08L2205/025G01L1/142G01L9/12C08K3/24C08K5/544C08K5/5425
Inventor 慕春红
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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