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, s

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

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[0031] Example 1

[0032] A copper calcium titanate / polydimethylsiloxane composite flexible foam, including the following components 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 of dimethyl methyl hydrogen siloxane, 17 parts of sucrose powder and 5 parts of ethanol.

[0033] The method for preparing the above-mentioned copper calcium titanate / polydimethylsiloxane composite flexible foam includes the following steps:

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

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

[0036] (3) Place the mixture Ⅱ ...

Example Embodiment

[0039] Example 2

[0040] A copper calcium titanate / polydimethylsiloxane composite flexible foam, including the following components 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 of dimethyl methyl hydrogen siloxane, 17 parts of sucrose powder and 8 parts of ethanol.

[0041] The method for preparing the above-mentioned copper calcium titanate / polydimethylsiloxane composite flexible foam includes the following steps:

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

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

[0044] (3) Place the m...

Example Embodiment

[0047] Example 3

[0048] A copper calcium titanate / polydimethylsiloxane composite flexible foam, including the following components 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 of dimethyl methyl hydrogen siloxane, 17 parts of sucrose powder and 10 parts of ethanol.

[0049] The method for preparing the above-mentioned copper calcium titanate / polydimethylsiloxane composite flexible foam includes the following steps:

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

[0051] (2) Add dimethyl methyl hydrogen siloxane and sucrose powder with a particle size of 90 μm to the mixture I, and continue to grind for 35 minutes to obtain the mixture II;

[0052] (3) Pl...

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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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