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Modified PTFE (polytetrafluoroethylene) fiberglass cloth for copper-clad plates and preparation method of fiberglass cloth

A glass fiber cloth and PTFE technology, applied in the field of copper clad laminate preparation, can solve the problems of large thermal expansion coefficient of PTFE, difficult to increase dielectric constant, narrow application field, etc. Effect

Active Publication Date: 2016-08-31
宜兴富仕德高频科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PTFE has a large thermal expansion coefficient, soft texture, low bending strength, poor mechanical properties, and it is difficult to improve the dielectric constant, so the application field is relatively narrow.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A modified PTFE glass fiber cloth for copper-clad laminates, including glass fiber cloth, coated with modified polytetrafluoroethylene glue, and the coating amount of the modified polytetrafluoroethylene glue is 80g / m 2 , the thickness of the modified PTFE glass fiber cloth is 0.1mm, and the components contained in the modified polytetrafluoroethylene glue are calculated in parts by weight: 10 parts of ceramic powder, 20 parts of silica powder, 0.1 part of silane coupling agent, 5 parts water and 50 parts PTFE emulsion. Wherein, the mass concentration of PTFE emulsion is 50%.

[0016] The preparation method of modified PTFE glass fiber cloth for copper clad laminate comprises the following steps:

[0017] (1) Mix 10 parts of ceramic powder, 20 parts of silica powder, 0.1 part of silane coupling agent, 5 parts of water and 50 parts of PTFE emulsion in parts by weight to form a modified polytetrafluoroethylene glue, and the stirring system Stir at a constant temperature...

Embodiment 2

[0021] A modified PTFE glass fiber cloth for copper clad laminates, including glass fiber cloth, coated with modified polytetrafluoroethylene glue, the coating amount of modified polytetrafluoroethylene glue is 100g / m 2 , the thickness of the modified PTFE glass fiber cloth is 0.12mm, and the components contained in the modified polytetrafluoroethylene glue are calculated in parts by weight: 20 parts of ceramic powder, 15 parts of silica powder, 0.5 part of silane coupling agent, 10 parts water and 30 parts PTFE emulsion. Wherein, the mass concentration of PTFE emulsion is 30%.

[0022] The preparation method of modified PTFE glass fiber cloth for copper clad laminate comprises the following steps:

[0023] (1) Mix 20 parts of ceramic powder, 15 parts of silica powder, 0.5 part of silane coupling agent, 10 parts of water and 30 parts of PTFE emulsion in parts by weight to form a modified polytetrafluoroethylene glue, and the stirring system Stir at a constant temperature of ...

Embodiment 3

[0027] A modified PTFE glass fiber cloth for copper clad laminates, including glass fiber cloth, coated with modified polytetrafluoroethylene glue, the coating amount of modified polytetrafluoroethylene glue is 260g / m 2 , the thickness of the modified PTFE glass fiber cloth is 0.125mm, and the components contained in the modified polytetrafluoroethylene glue are calculated in parts by weight: 30 parts of ceramic powder, 10 parts of silica powder, 0.8 part of silane coupling agent, 20 parts water and 20 parts PTFE emulsion. Wherein, the mass concentration of PTFE emulsion is 20%.

[0028] The preparation method of modified PTFE glass fiber cloth for copper clad laminate comprises the following steps:

[0029] (1) Mix 30 parts of ceramic powder, 10 parts of silica powder, 0.8 part of silane coupling agent, 20 parts of water and 20 parts of PTFE emulsion in parts by weight to form a modified polytetrafluoroethylene glue, and the stirring system Stir at a constant temperature of...

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Abstract

The invention relates to modified PTFE (polytetrafluoroethylene) fiberglass cloth for copper-clad plates and a preparation method of the fiberglass cloth. The modified PTFE fiberglass cloth comprises a fiberglass cloth body which is coated with modified polytetrafluoroethylene glue solution in the coating amount of 80-260g / m<2>. The preparation method includes uniformly mixing ceramic powder, silicon dioxide powder, silane coupling agent, water and PTFE emulsion to form the modified polytetrafluoroethylene glue solution, soaking the fiberglass cloth in the modified polytetrafluoroethylene glue solution at constant speed, removing excessive glue solution via extrusion of an extrusion roll, putting the soaked fiberglass cloth in a drying oven for drying, and finally cutting and reeling. The preparation method is simple and easy for step operation, the prepared modified PTFE fiberglass cloth can meet the requirements for electrical performance of the plates, subsequent processing cost can be lowered, addition amount of the ceramic powder is controlled to regulate the size of dielectric constant, and the copper-clad plates prepared can be applied to more fields.

Description

technical field [0001] The invention relates to a modified PTFE glass fiber cloth for copper-clad laminates and a preparation method thereof, belonging to the technical field of copper-clad laminate preparation. Background technique [0002] With the gradual development of communication and electronic products in the direction of high frequency and high speed, traditional substrate materials are replaced by high-speed and high-reliability substrates, and the market demand for high-frequency high-performance polytetrafluoroethylene (PTFE) copper clad laminates is growing rapidly. PTFE has excellent electrical properties, corrosion resistance and heat resistance, low dielectric constant and dielectric loss, and is suitable as a matrix resin for high-speed digital and high-frequency microwave circuit boards. However, PTFE has a large thermal expansion coefficient, soft texture, low bending strength, poor mechanical properties, and it is difficult to improve the dielectric const...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/04B32B27/04B32B27/20
CPCB32B17/04B32B27/20B32B2255/02B32B2255/26B32B2260/021B32B2260/046B32B2262/101B32B2264/10B32B2264/102B32B2264/107B32B2307/202B32B2307/204B32B2307/536B32B2457/08
Inventor 邵亚国梁杰邵爱国赵中伟
Owner 宜兴富仕德高频科技有限公司
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