Release agent for steel plate used for press lamination process of PCB multi-layer plate

Abstract

The invention discloses a release agent for a steel plate used for a press lamination process of a PCB multi-layer plate. The release agent adopts a manner of a pure liquid and is prepared by uniformly mixing the following components: 1 to 7 wt% of polyquaternium, 1.0 to 5.0 wt% of siloxane and 2 to 10 wt% of a polyolefin wax emulsion, with the balance being deionized water. When the release agentis in use, the steel plate for press lamination is only needed to be soaked in the release agent and then taken out for blow-drying, so the surface of the steel plate can form a uniform solid releaselayer which can effectively block resin from directly contacting with the steel plate, has good release effect, reduces resin particle residues, decreases the sunken proportion of press lamination and can improve the product yield of the manufacturing process of press lamination; meanwhile, after the release agent is used, the release agent can be conveniently removed with the manners of brushingand rubbing, so no resin particles are remained; and a used waste liquid can be treated as general wastewater after filtered, so the pollution to the environment is small.

Description

technical field [0001] The invention relates to a release agent, in particular to a steel plate release agent used in a PCB lamination process, and belongs to the technical field of additives for the PCB lamination process. Background technique [0002] The Chinese name of PCB (Printed Circuit Board) is a printed circuit board, also known as a printed circuit board. It is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. As the requirements for information transmission become higher and higher, the number of layers of PCB multilayer circuit boards is also increasing. The lamination involved in the production process of PCB multilayer boards is to use high temperature and high pressure to heat and melt the resin prepreg, make it flow, and then heat-cure it into a cured sheet, so that one or more inner layers are etched. Blackening or browning treatment) and copper foil are bonded into a ...

AI Technical Summary

Problems solved by technology

However, this method has certain disadvantages, such as the need to match the size of the steel plate, the edge of the steel plate cannot be covered and the edge cannot be released, the pressing is difficult to remove from the plate surface, and the cost is high.

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