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Method for preparing biomimetic-structure latex-conductive polymer composite material and latex-conductive polymer composite film and application of latex-conductive polymer composite film

A conductive polymer and composite material technology, applied in the field of non-contact sensors, can solve the problems of non-extensibility, complicated process, and high manufacturing cost

Active Publication Date: 2019-06-07
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its application in the field of flexible electronics is limited due to the disadvantages of high preparation cost, complicated process, lack of ductility, and no ability to adhere to curved surfaces; Resistance or capacitance changes, however, due to the high content of conductive substances in the mixing process to achieve conductive functions, it is difficult to achieve high ductility, and it cannot be applied to complex surfaces

Method used

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  • Method for preparing biomimetic-structure latex-conductive polymer composite material and latex-conductive polymer composite film and application of latex-conductive polymer composite film
  • Method for preparing biomimetic-structure latex-conductive polymer composite material and latex-conductive polymer composite film and application of latex-conductive polymer composite film
  • Method for preparing biomimetic-structure latex-conductive polymer composite material and latex-conductive polymer composite film and application of latex-conductive polymer composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] With 1mg poly(3,4-ethylenedioxythiophene)-polystyrene sulfonic acid as conductive material, concentration is the water dispersion of 0.03% by weight, 250mg of carboxylated styrene-butadiene latex water dispersion with solid content rate of 64% by weight. Stir to mix to form a light white dispersion. Stir vigorously for 25 minutes at a temperature of 20-25°C. Wherein, by calculation, based on the total weight of the light white dispersion, the amount of poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid is 0.03% by weight; the amount of carboxylated styrene-butadiene latex is 4.92% by weight %; and the amount of water is 95.04% by weight.

[0063] The obtained off-white dispersion was poured into a common flat-bottomed rubber mold measuring 3 cm x 4 cm x 1 mm. A light black polymer film 1 can be obtained by drying for 10 hours in an oven at a temperature of 35-40° C. using a low-temperature slow evaporation method.

Embodiment 2

[0065] Experiment with a method similar to Example 1, except that the carboxylated styrene-butadiene latex is changed to natural latex to obtain a light black polymer film 2.

Embodiment 3

[0067]Experiment with a method similar to that of Example 1, except that carboxylated styrene-butadiene latex was changed to silicon acrylic latex to obtain light black polymer film 3 .

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Abstract

The invention provides a method for preparing a biomimetic-structure latex-conductive polymer composite material and a latex-conductive polymer composite film and application of the latex-conductive polymer composite film. The method comprises the steps: mixing poly(3,4-ethylenedioxythiophene)-polystyryl sulfonic acid, a latex liquid and a solvent, and applying an electric charge effect so as to obtain the biomimetic-structure latex-conductive polymer composite material, wherein the mass ratio of the poly(3,4-ethylenedioxythiophene)-polystyryl sulfonic acid to the latex liquid to the solvent is (0.03-0.18):(4.91-4.92):(94.90-95.05). The composite film has a uniaxial tension rate of nearly 340% and a thickness of only 75-90 [mu]m, and has the ability of conformal adhesion to uneven surfacesof different materials; and the sensitivity of a prepared non-contact humidity sensor is -1.35% / %RH (deltaR / R0), and the sensitivity of a non-contact temperature sensor is -0.72% / DEG C (deltaR / R0).

Description

technical field [0001] The invention belongs to the technical field of non-contact sensors, and in particular relates to a method for preparing a latex-conductive polymer composite material with a bionic structure, a latex-conductive polymer composite film and an application thereof. Background technique [0002] Flexible electronics can adapt to the complex curved surface environment, so that it can break through the limitations of traditional electronic devices, and has broad application prospects in electronic displays, thin-film solar panels, radio frequency identification technology, and electronic skin. Among them, flexible sensors that can comprehensively, multi-dimensionally, accurately and effectively capture information and ensure signal quality to the greatest extent are an important part of flexible electronics. However, due to the limitations of insufficient performance of flexible materials and insufficient sensing mechanisms, the current flexible electronic se...

Claims

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Application Information

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IPC IPC(8): C08L13/02C08L7/02C08L33/04C08L65/00C08L25/18C08J5/18G01N27/04G01K7/16G01V3/00
Inventor 徐航勋王志勇汪韬张颖
Owner UNIV OF SCI & TECH OF CHINA