Production process of environment-friendly microwave ceramic copper-clad plate

Abstract

The invention relates to a production process of an environment-friendly microwave ceramic copper-clad plate. The environment-friendly microwave ceramic copper-clad plate is mainly applied to the fields meeting high-end requirements, such as microwave and millimeter-wave satellite communications. The process comprises the following steps of: carrying out modification treatment on the surface of glass fiber cloth and immersing in synthetic slurry to form a prepreg; rolling or cutting and laminating, and anchoring a copper foil; then carrying out cold machine pre-pressing to evacuate air; and under the vacuum condition of 10-20 Kpa, keeping the pressure of a hot pressing machine at the temperature of 350-400 DEG C and at the pressure of 15-20 Mpa to be cured for 1-2 hours to prepare the product. The environment-friendly microwave ceramic copper-clad plate has microwave high-frequency low dielectric epsilonr, low loss tan delta, efficient signal transmission and high stability.

Description

technical field [0001] The invention relates to a production process of an environment-friendly microwave ceramic copper-clad laminate. The environmentally friendly microwave ceramic copper clad laminate is mainly used in microwave and millimeter wave satellite communications, military radar and electronic navigation, medical treatment, optical fiber communications, microwave safety monitoring and other high-tech fields above 20GHz frequency band. Background technique [0002] In current electronic products, people use paper substrates or epoxy glass fiber cloth substrates. Paper-based substrate dielectric ε r High, tanδ loss is large, unstable; heat resistance is poor, easy to deform, and cannot be used as a base material for high-frequency products. In addition, its manufacturing process is intermittent, with low production efficiency, difficult to control product consistency and large waste; it also has high pollution discharge to water sources and air, and is not envi...

AI Technical Summary

Problems solved by technology

Paper-based substrate dielectric ε r High, large tanδ loss, unstable; poor heat resistance, easy to deform, cannot be used as a base material for high-frequency products

In addition, its manufacturing process is intermittent, the production efficiency is low, the consistency of the product is difficult to control and the waste is large; the amount of pollution to water and air is also high, and it is not environmentally friendly

Epoxy fiberglass cloth substrates can be used in some high-frequency circuits; in practical applications, affected by the environment and climate, the substrate exhibits dielectric ε in the high-frequency band r Larger, slow charging and discharging process, tanδ is affected by the environment and climate, the loss increases, and the signal transmission is unstable

The base material of epoxy glass fiber cloth is also intermittently produced and processed, which is difficult in the process, wastes a lot of scraps and cannot be recycled, and the overall flatness is low and easy to warp; the dust of glass fiber cloth is harmful to human health; the base material of epoxy glass fiber cloth is harmful to The adjustment range of performance is narrow, which makes it impossible to achieve large-volume, high-efficiency, low-waste recyclable, high-frequency serial production scale

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