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Inorganic-organic composite flexible high-k thin film and preparing method thereof

A composite flexible and high dielectric technology, applied in the field of dielectric materials, can solve the problems of high dielectric loss, high brittleness and low breakdown voltage of pure inorganic CCTO films

Active Publication Date: 2017-09-08
HUAIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure inorganic CCTO films have high dielectric loss, low breakdown voltage, high brittleness, and low structural strength, which lead to poor processability and a large gap from practical applications.

Method used

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  • Inorganic-organic composite flexible high-k thin film and preparing method thereof
  • Inorganic-organic composite flexible high-k thin film and preparing method thereof
  • Inorganic-organic composite flexible high-k thin film and preparing method thereof

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preparation example Construction

[0028] A method for preparing an inorganic-organic composite flexible high-dielectric film according to an embodiment of the present invention includes the following steps S1-S2.

[0029] Step S1: mixing the polyurethane elastomer with calcium copper titanate powder, vulcanizing agent and coupling agent to obtain composite raw rubber.

[0030] CCTO has an ultra-high dielectric constant (~10 4 ), and its dielectric constant has good frequency stability and temperature stability. Polyurethane elastomers have good adhesion, wide temperature resistance (-50 ° C ~ 150 ° C), excellent processing performance, low processing temperature, low dielectric loss, excellent insulation, flexibility and high Breakdown voltage, but its dielectric constant is usually low, it is difficult to meet the performance requirements of microelectronic components. Therefore, this application selects polyurethane elastomer and copper calcium titanate powder to form an inorganic-organic composite film af...

Embodiment 1

[0061] Add 10.11g of calcium carbonate powder, 24.10g of copper oxide powder, 32.27g of titanium dioxide powder, 190mL of absolute ethanol, and 266g of zirconia grinding balls into the grinding tank, and ball mill in a planetary ball mill at a speed of 200rpm for 1.5h, and then add 199g of NaCl to Continue ball milling at a speed of 200rpm for 1.5h to obtain a mixed slurry; place the above mixed slurry in a drying chamber at 75°C to dry, put it into an alumina crucible, and then place it in a high-temperature furnace and roast it at 850°C for 2h to obtain a salt-containing CCTO intermediate powder material. The above salt-containing CCTO intermediate powder was repeatedly washed with deionization at 85°C until no obvious white precipitate was observed in the supernatant liquid detected with silver nitrate solution, and the CCTO slurry obtained after washing was dried to obtain CCTO powder.

[0062] Take 58.88g of CCTO powder synthesized above, 30.00g of polyurethane elastomer,...

Embodiment 2

[0064] Add 10.11g of calcium carbonate powder, 24.10g of copper oxide powder, 32.27g of titanium dioxide powder, 190mL of absolute ethanol, and 266g of zirconia grinding balls into the grinding jar, mill in a planetary ball mill at a speed of 160rpm for 6 hours, then add 199g of KCl at a speed of 160rpm Continue ball milling for 3 hours to obtain a mixed slurry; place the above mixed slurry in a drying chamber at 75°C, dry it, put it into an alumina crucible, and then place it in a high-temperature furnace and bake it at 750°C for 5 hours to obtain a salt-containing CCTO intermediate powder. The above salt-containing CCTO intermediate powder was repeatedly washed with deionization at 75°C until no obvious white precipitate was observed in the supernatant liquid detected with silver nitrate solution, and the CCTO slurry obtained after washing was dried to obtain CCTO powder.

[0065] Take 34.35g of CCTO powder synthesized above, 30.00g of polyurethane elastomer, 0.90g of bis-2,5...

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Abstract

Provided is an inorganic-organic composite flexible high-k thin film and a preparing method thereof. The method comprises the steps of mixing polyurethane elastomers, calcium copper titanate powder, a vulcanizing agent and a coupling agent to obtain composite raw rubber; conducting vulcanizing and coupling reactions on the composite raw rubber and prepare thin film to obtain the inorganic-organic composite flexible high-k thin film. According to the method, all components are mixed to form the composite raw rubber, the ulcanizing reaction is generated among continuous phase polyurethane elastomers in the composite raw rubber under the effect of the vulcanizing agent to form polyurethane cured rubber of a stereo network structure, the coupling is generated between the disperse phase calcium copper titanate powder with which the polyurethane elastomers are filled and the polyurethane elastomers under the effect of the coupling agent, and accordingly the inorganic-organic composite flexible high-k thin film with the polyurethane cured rubber of the stereo network structure being a main structure is obtained, wherein the stereo network structure is filled with the calcium copper titanate powder. The inorganic-organic composite flexible high-k thin film is high in dielectric constant, low in dielectric loss, high in stretching resistance, good in flexibility and good in processability.

Description

technical field [0001] The invention relates to the technical field of dielectric materials, in particular to an inorganic-organic composite flexible high-dielectric film and a preparation method thereof. Background technique [0002] With the rapid development of the information and microelectronics industry, the application requirements for miniaturization, integration, intelligence, and high frequency of semiconductor devices are increasing rapidly. More and more electronic components, such as dielectric substrates, dielectric antennas, DRAMs, embedded film capacitors, etc., require dielectric materials to have excellent dielectric properties, as well as good mechanical properties and processing properties. [0003] Traditional inorganic piezoelectric ceramics have high dielectric constant and high stability, but their shortcomings such as high brittleness, high processing temperature, and poor compatibility with current circuit integration processing technology limit its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/02C08K3/24C08K3/26C08K3/22C08K5/544C08K5/5435C08K5/14C08K5/01B29D7/01
CPCB29D7/01C08J5/18C08J2375/04C08K3/22C08K3/24C08K3/26C08K5/01C08K5/14C08K5/5435C08K5/544C08K13/02C08K2003/2241C08K2003/2248C08K2003/265C08L2203/16C08L2203/20C08L75/04
Inventor 万维罗俊荣苑文香
Owner HUAIHUA UNIV
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