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High-frequency and high-speed flexible copper-clad plate and preparation method thereof

A flexible copper-clad laminate, high-speed technology, applied in chemical instruments and methods, other household appliances, electronic equipment, etc., can solve the problems of vacuum system corrosion failure, tensile strength decrease, elongation decrease, etc. The method is simple and efficient Effective, wettability improvement, adhesion improvement effect

Inactive Publication Date: 2017-06-13
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the smaller the better, the transmission rate of the signal is inversely proportional to the square root of the dielectric constant of the material, and a high dielectric constant can easily cause signal transmission delay
(2) Dielectric loss (Df) must be small
The disadvantage of the high-temperature melting method is that PTFE will release toxic substances during high-temperature sintering, and the shape of the PTFE film is not easy to maintain; using the radiation grafting method, the PTF itself is destroyed, the tensile strength is reduced by 30%, and the elongation is also reduced; The investment cost of the processing device is high, and the problem of the failure of the vacuum system due to corrosion has not been fundamentally solved; and the electrolytic reduction speed of the electrolytic reduction method is not yet suitable for industrial production

Method used

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  • High-frequency and high-speed flexible copper-clad plate and preparation method thereof
  • High-frequency and high-speed flexible copper-clad plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weigh the refined naphthalene of 100kg and the tetrahydrofuran of 600kg, stand-by. Feed nitrogen into the self-made reaction kettle, add the prepared tetrahydrofuran after stabilization, then open the stirrer and start stirring, add 100kg of refined naphthalene simultaneously, and make the naphthalene completely dissolved by stirring. Then turn on the cooling device, and gradually add 10kg of sodium metal into small pieces. After adding all the sodium metal, control the temperature and react at 10°C for 2 hours. After the reaction was completed, the stirring was stopped, and the temperature was slowly returned to normal temperature, and the material was discharged. Spray the above-mentioned PTFE surface treatment solution evenly on the surface of the PTFE film, the surface treatment time is about 10s, then pull the film, soak it in a washing tank filled with acetone for 1min, rinse it with clean water, and then carry out dry. Then, the epoxy resin adhesive is evenly c...

Embodiment 2

[0015] Weigh the refined naphthalene of 100kg and the tetrahydrofuran of 800kg, stand-by. Feed nitrogen into the self-made reaction kettle, add the prepared tetrahydrofuran after stabilization, then open the stirrer and start stirring, add 100kg of refined naphthalene simultaneously, and make the naphthalene completely dissolved by stirring. Then turn on the cooling device, and gradually add 15kg of sodium metal into small pieces. After adding all the sodium metal, control the temperature and react at 15°C for 1 hour. After the reaction was completed, the stirring was stopped, and the temperature was slowly returned to normal temperature, and the material was discharged. Spray the above-mentioned PTFE surface treatment solution evenly on the surface of the PTFE film, the surface treatment time is about 15s, then pull the film, soak it in the washing tank with ethanol for 2 minutes, rinse it with clean water, and then carry out dry. Then, the acrylate adhesive is evenly coate...

Embodiment 3

[0017] Weigh the refined naphthalene of 100kg and the tetrahydrofuran of 650kg, stand-by. Feed nitrogen into the reaction kettle, add the prepared tetrahydrofuran after stabilization, then open the stirrer and start stirring, add 100kg of refined naphthalene simultaneously, and make the naphthalene completely dissolved by stirring. Then turn on the cooling device, and gradually add 13kg of sodium metal into small pieces. After adding all the sodium metal, control the temperature and react at 10°C for 2 hours. After the reaction was completed, the stirring was stopped, and the temperature was slowly returned to normal temperature, and the material was discharged. Spray the above-mentioned PTFE surface treatment liquid evenly on the surface of PTFE film, the surface treatment time is about 10s, then pull the film, soak it in a washing tank filled with methanol for 2 minutes, rinse it with clean water, and then carry out dry. Then, evenly coat the silicone adhesive on the surfa...

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Abstract

The invention discloses a high-frequency and high-speed flexible copper-clad plate and a preparation method thereof. The flexible copper-clad plate comprises a polymer insulating base film, a polymer adhesive layer and a metal foil, and has good dielectric property. The dielectric constant of the prepared flexible copper-clad plate is 2.4-3.0, and the dielectric loss is 0.001-0.005. The preparation method comprises the steps: firstly, carrying out surface treatment on the polymer insulating base film; uniformly coating the polymer insulating base film subjected to surface treatment with a polymer adhesive and then carrying out continuous lamination on the metal foil by adopting a hot roller; and finally carrying out high-temperature curing to obtain the high-frequency and high-speed flexible copper-clad plate. The prepared flexible copper-clad plate has the characteristics of high frequency and high speed, is extremely low in dielectric constant and dielectric loss, and can be widely applied to the fields of radar, aerospace equipment, navigation equipment, aircraft instruments and smart phones.

Description

technical field [0001] The invention relates to a high-frequency and high-speed flexible copper-clad laminate and a preparation method thereof in the technical field of flexible copper-clad laminates, and more specifically refers to a flexible copper-clad laminate with good flexibility and low dielectric constant and dielectric loss, suitable for Used in high-frequency and high-speed electronic products. Background technique [0002] With the great development of high-frequency communication, mobile phones, car phones, and wireless communication are developing to high-frequency, the frequency of use is shifted from MHz to GHz, and information transmission enters the high-frequency field. The high frequency and high speed of electronic information products put forward higher requirements on the high frequency characteristics of flexible copper clad laminates. The basic characteristics of high-frequency flexible copper-clad laminates must meet the following two requirements: ...

Claims

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Application Information

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IPC IPC(8): B32B15/085B32B7/12B32B15/20B29C65/48B29K27/18B29L9/00
CPCB32B15/085B29C65/48B29C66/026B29C66/45B29C66/71B29C66/74281B29K2027/18B29L2009/003B32B7/12B32B15/20B32B2457/08
Inventor 陈卫丰杨海滨李德江王龙李永双
Owner CHINA THREE GORGES UNIV
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