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Preparation method of ceramic filled PTFE copper-clad plate

A technology of copper-clad laminates and ceramic fillers, applied in chemical instruments and methods, electronic equipment, applications, etc., can solve problems such as easy settlement, achieve low loss factor, expand application range, and good dip-soldering resistance

Active Publication Date: 2020-06-02
珠海国能新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is a difficult problem to uniformly disperse the ceramic filler in the PTFE emulsion. This is because the PTFE emulsion is a water emulsion with low viscosity. The ceramic filler generally has a very high density and is easy to settle in the emulsion. Therefore, ceramic filled PTFE impregnated glass fiber cloth methods to fabricate ceramic-filled PTFE copper-clad laminates, and there are few relevant literatures

Method used

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  • Preparation method of ceramic filled PTFE copper-clad plate
  • Preparation method of ceramic filled PTFE copper-clad plate
  • Preparation method of ceramic filled PTFE copper-clad plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a kind of impregnated fiberglass cloth

[0035] Include the following steps:

[0036] Take 100g of composite ceramic filler, 84g of polytetrafluoroethylene emulsion, 12g of starch and 150g of water (mass ratio: 1:0.84:0.12:1.5) and stir in a stirrer for 60 minutes, let stand, remove air bubbles, and obtain glue; glass fiber cloth Immerse in the glue, and control the amount of glue attached to the glass fiber cloth at 350g / m by the metering roller 2 , and then baked under the conditions of 100°C / 5min+300°C / 5min+380°C / 5min to obtain impregnated glass fiber cloth.

[0037] Wherein, the preparation method of composite ceramic filler is:

[0038] S1) Take 1000g silica powder (particle size range D is 10μm), 25g trehalose fatty acid monoester and 25kg, 30wt% ethanol, carry out ultrasonic dispersion for 3.5h, and then dry under vacuum for 10h to obtain the treated ceramic filler. Take 1000g of the treated ceramic filler and stir in the mixing equipment for 5...

Embodiment 2

[0042] Embodiment 2, a kind of impregnated fiberglass cloth

[0043] Include the following steps:

[0044] Take 100g of composite ceramic filler, 80g of polytetrafluoroethylene emulsion and 150g of water (mass ratio: 1:0.8:1.5) and stir in a stirrer for 55 minutes, let stand, remove air bubbles, and obtain glue; dip glass fiber cloth in the glue, Control the amount of glue attached to the glass fiber cloth at 350g / m by metering rollers 2 , and then baked under the conditions of 100°C / 5min+300°C / 5min+380°C / 5min to obtain impregnated glass fiber cloth.

[0045] Wherein, the preparation method of composite ceramic filler is:

[0046] S1) Take 1000g of glass fiber yarn (particle size range D is 10μm), 25g of trehalose fatty acid monoester and 25kg of 30wt% ethanol for ultrasonic dispersion for 3.5h, and then dry under vacuum for 10h to obtain a treated ceramic filler. Take 1000g of the treated ceramic filler and stir in the mixing equipment for 5min, inject 10g of coupling ag...

Embodiment 3

[0050] Embodiment 3, a kind of impregnated fiberglass cloth

[0051] Include the following steps:

[0052] Take 100g of composite ceramic filler, 75g of polytetrafluoroethylene emulsion, 10g of starch and 150g of water (mass ratio 1:0.75:0.1:1.5) and stir in a stirrer for 55min, let stand, remove air bubbles, and obtain glue; Immerse in the glue, and control the amount of glue attached to the glass fiber cloth at 350g / m by the metering roller 2 , and then baked under the conditions of 100°C / 5min+300°C / 5min+380°C / 5min to obtain impregnated glass fiber cloth.

[0053] Wherein, the preparation method of composite ceramic filler is:

[0054] S1) Take 1000g of silica powder (particle size range D is 10 μm), 25g of trehalose fatty acid monoester and 25kg of 25wt% ethanol for ultrasonic dispersion for 3 hours, and then dry in vacuum for 10 hours to obtain a treated ceramic filler. Take 1000g of the treated ceramic filler and stir in the mixing equipment for 5min, inject 10g of c...

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Abstract

The invention belongs to the technical field of electronic circuits, and particularly relates to a preparation method of a ceramic filled PTFE copper-clad plate. The preparation method of impregnatedglass fiber cloth comprises the following steps: stirring a composite ceramic filler, polytetrafluoroethylene emulsion, a thickening agent and water in a stirrer for 30-60 minutes, standing, and removing bubbles to obtain glue; and soaking the glass fiber cloth in the glue, controlling the glue attaching amount of the glass fiber cloth to be 350 g / m<2> through a metering roller, and carrying out baking to obtain the impregnated glass fiber cloth. According to the invention, the composite ceramic filler with a three-layer structure (the ceramic filler, the coupling agent layer and the fluororesin layer) is blended with the polytetrafluoroethylene emulsion, the thickening agent and the water, so that the glue with good stability can be obtained to impregnate the glass fiber cloth, and the copper-clad plate obtained by laminating the impregnated glass fiber cloth, a first copper foil and a second copper foil meets the requirements of a high-frequency technology.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a method for preparing a ceramic-filled PTFE copper-clad laminate. Background technique [0002] With the development of communication technology, electronic products put forward higher and higher requirements for the dielectric properties of printed circuit boards, requiring lower and lower dielectric constants and dielectric losses, and the dielectric properties cannot change with the use environment And change. The highly symmetrical long-chain molecular structure of polytetrafluoroethylene (PTFE) endows it with the best dielectric properties and is an indispensable material for high-frequency communication electronics. [0003] However, the thermoplastic characteristics of PTFE material limit its wide application. People have used fillers such as graphite, molybdenum disulfide, aluminum oxide, glass fiber, carbon fiber, and silicon micropowder to ble...

Claims

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Application Information

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IPC IPC(8): B32B17/04B32B15/14B32B15/20B32B33/00C08L27/18C08L3/02C08K9/06C08K3/36C08K7/14
CPCB32B5/02B32B15/14B32B15/20B32B2260/021B32B2260/04B32B2260/046B32B2262/101B32B2457/08C08L27/18C08L3/02C08K9/06C08K3/36C08K7/14
Inventor 葛凯刘庆辉魏静
Owner 珠海国能新材料股份有限公司
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