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Preparation method of spherical Ag@T-ZnOw powder and method and application for preparing high-dielectric polymer composite film

A composite film and polymer technology, applied in the direction of fixed capacitor dielectrics and components of fixed capacitors, can solve the problem that quantum tunneling effect is difficult to meet the requirements of dielectric properties, achieve excellent electrical properties, improve capacitance, The effect of improving the dielectric properties

Active Publication Date: 2020-05-19
哈尔滨金氙科技有限公司
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Problems solved by technology

[0005] The present invention solves the technical problem that it is difficult to meet the dielectric performance requirements of modern microcapacitors and sensors due to the inability to produce quantum tunneling effect of spherical nano-silver as a reinforcing phase; and provides a preparation method of spherical Ag@T-ZnOw powder And the method and application of preparing high dielectric polymer composite film

Method used

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  • Preparation method of spherical Ag@T-ZnOw powder and method and application for preparing high-dielectric polymer composite film
  • Preparation method of spherical Ag@T-ZnOw powder and method and application for preparing high-dielectric polymer composite film
  • Preparation method of spherical Ag@T-ZnOw powder and method and application for preparing high-dielectric polymer composite film

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Embodiment 1

[0032] Embodiment 1: The preparation method of spherical Ag@T-ZnOw powder in this embodiment is carried out according to the following steps:

[0033] Step 1. Mix 0.25g silver nitrate and 1.0g polyvinylpyrrolidone, then add 100mL ethylene glycol, heat up to 150°C while stirring, keep it for 2h, and cool to 70°C naturally;

[0034] Step two, then add 2g of tetrapod zinc oxide, keep the temperature at 70℃ and stir at 1500rpm for 2h, then cool to room temperature;

[0035] Step 3. Then it is washed with 95% ethanol solution by volume concentration, centrifuged at 2000 rpm for 3 times and then dried at 80°C to obtain Ag@T-ZnOw powder, such as Figure 1a-1d As shown in the figure, it can be seen that the surface of the tetrapod-shaped zinc oxide is coated with spherical nano-silver particles, and the morphology is good.

[0036] The method for preparing a high-dielectric polymer composite film from the spherical Ag@T-ZnOw powder prepared by the above method is completed by the following st...

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Abstract

The invention discloses a preparation method of a spherical Ag@T-ZnOw powder and a method and application for preparing a high-dielectric polymer composite film, relates to a preparation method and application of the spherical composite powder, and aims to solve the technical problem that spherical nano-silver serving as a reinforcing phase cannot generate a quantum tunneling effect, and the requirements of modern micro-capacitors and sensors on dielectric properties are difficult to meet. Silver nitrate, polyvinylpyrrolidone and ethylene glycol are used as raw materials to prepare spherical Ag, then tetrapod-like zinc oxide is added, washing, centrifuging and drying are performed after a reaction, and the spherical Ag@T-ZnOw powder is obtained. The dielectric polymer composite film is prepared by film laying and tabletting. The spherical Ag@T-ZnOw powder can generate a quantum tunneling effect, has excellent electrical properties, can be used for preparing sensors, microcapacitors andother devices after being added into a polymer matrix, and has wide application prospects.

Description

Technical field [0001] The invention relates to a method for preparing spherical composite powder and its application; in particular to a method for preparing spherical Ag@T-ZnOw powder and a method and application for preparing a high-dielectric polymer composite film; spherical Ag@T-ZnOw powder The body is used to make microcapacitors and sensor devices. Background technique [0002] With the rapid development of electronic information technology and nanotechnology, embedded capacitors have been widely used in various microelectronic systems. Among them, the increasing miniaturization and weight reduction of electronic components puts forward higher requirements for the integration, safety and life of the device. The preparation of composite materials with high dielectric constant and low electrical loss using polymers as a matrix has become the development trend of modern dielectric materials. [0003] Dielectric materials store energy in the form of static electricity and hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K7/18C08K7/08C08J5/18C08L75/04H01G4/18
CPCC08J5/18C08J2375/04C08K7/08C08K7/18C08K9/10C08K2201/001C08K2201/011H01G4/18
Inventor 翁凌罗金玉关丽珠张笑瑞刘立柱
Owner 哈尔滨金氙科技有限公司
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