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A kind of physical mixing method of impregnating slurry for PTFE-based composite medium plate and impregnating slurry and application

A composite medium and physical mixing technology, which is applied in the physical mixing of impregnating slurry for PTFE-based composite medium plates, impregnating slurry and application fields, can solve the problem that the dispersion cannot be improved by ceramic fillers and PTFE organic/inorganic composites, and reduce the composite medium The electrical properties of the impregnated slurry for the board, the reduction of the electrical properties of the PTFE composite dielectric board, etc., achieve the effect of improving the static stability, avoiding layered settlement, and avoiding adverse effects

Active Publication Date: 2020-05-08
武汉坚塔新材料与智能装备技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after adding ceramic fillers to the impregnation slurry for PTFE composite dielectric plates, the coating of the ceramic filler particles by the coupling agent can only improve the dispersion of the ceramic particles in the PTFE slurry, but cannot improve the organic / inorganic composite of the ceramic fillers and PTFE. ; Moreover, when the coupling agent coats the ceramic filler particles, it will increase the dielectric loss of the impregnated slurry, reduce the electrical properties of the impregnated slurry for the composite dielectric plate, and then reduce the electrical properties of the PTFE composite dielectric plate

Method used

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  • A kind of physical mixing method of impregnating slurry for PTFE-based composite medium plate and impregnating slurry and application
  • A kind of physical mixing method of impregnating slurry for PTFE-based composite medium plate and impregnating slurry and application
  • A kind of physical mixing method of impregnating slurry for PTFE-based composite medium plate and impregnating slurry and application

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Experimental program
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Embodiment 1

[0039] According to SiO 2 Powder accounts for 50% of the total mass, and PTFE emulsion accounts for 50% of the total mass. Weigh 100g SiO 2 Powder and 166.7gPTFE emulsion (emulsion solid content is 60%), stir 20s with 800r / min speed, obtain ceramic filler / PTFE composite material slurry, then the ceramic filler / PTFE composite material slurry that obtains is placed in plastic storage In the tank, put it into a double-center mixer, carry out double-center stirring, set the rotation speed at 2000r / min, and double-center stirring time for 20s to obtain SiO-containing 2 Powdered PTFE-based composite media boards are impregnated with slurry.

Embodiment 2

[0041] According to SiO 2 Powder accounts for 70% of the total mass, and PTFE emulsion accounts for 30% of the total mass. Weigh 140g SiO 2 Powder and 100gPTFE emulsion (emulsion solid content is 60%), stir 20s with 800r / min speed, obtain ceramic filler / PTFE composite material slurry, then the ceramic filler / PTFE composite material slurry that obtains is placed plastic storage tank , put it into a double-center mixer, carry out double-center stirring, set the rotation speed to 2000r / min, and double-center stirring time to 20s to obtain SiO-containing 2 Powdered PTFE-based composite media boards are impregnated with slurry.

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Abstract

The invention belongs to the technical field of dielectric plates, and particularly relates to a physical mixing method of impregnation slurry for a PTFE-based composite dielectric plate, impregnationslurry and an application thereof. The method comprises the following steps of: firstly, primarily stirring PTFE and a ceramic filler; and then, carrying out double-center stirring on the obtained ceramic filler / PTFE composite slurry to obtain the impregnation slurry for the PTFE-based composite dielectric plate containing the ceramic filler. The double-center stirring can effectively improve thedispersibility of the PTFE and the ceramic filler in the slurry and also promote the compounding of the ceramic filler and the PTFE, so that the impregnated slurry is more stable, and the standing stability of the impregnation slurry for the PTFE-based composite dielectric plate containing the ceramic filler is obviously improved; in addition, the method does not contain a coupling agent, so thatthe adverse effect of the coating layer of the coupling agent on the electrical performance of the composite dielectric plate is avoided.

Description

technical field [0001] The invention belongs to the technical field of medium boards, and in particular relates to a physical mixing method of impregnating slurry for PTFE-based composite medium plates, the impregnating slurry and its application. Background technique [0002] High-frequency dielectric boards are special circuit boards with high electromagnetic frequencies. Generally speaking, high-frequency can be defined as frequencies above 1GHz, and their physical properties, precision, and technical parameters are all very high; for example, high-frequency dielectric boards are The control requirements for line width, roughness and characteristic impedance are extremely strict. At present, the commonly used method for preparing high-frequency dielectric boards is dipping glass fiber cloth. The improvement of uniformity can improve the stability of the impregnated slurry, thereby ensuring the stable electrical performance of the dielectric board prepared from the impreg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08K3/36C08J3/20C08J3/205C08J3/00
Inventor 沈杰谢胜辉周静韩坤昆祁琰媛陈文
Owner 武汉坚塔新材料与智能装备技术有限公司