Wet strength copper clad laminate base paper and preparation process

Abstract

The invention aims to provide wet strength copper clad laminate base paper to meet the requiremetn of a subsequent process for flame retardance. The wet strength bleached wood pulp copper clad laminate base paper is prepared by using eucalyptus wood pulp as papermaking wood pulp and adding a wet strength agent which is 0.18 to 0.32 percent of the total weight of the eucalyptus wood pulp. A preparation process of the wet strength bleached wood pulp copper clad laminate base paper is characterized in that the wet strength agent is added into a head box of a paper machine by a measuring pump. The invention has the advantage that by selection of the paper pulp and addition of the wet strength agent, the base paper has excellent water resistance and the strength is greatly improved so as to meet the requirement in the treatment process of the subsequent process.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to the manufacture of copper-clad board paper for the electronic industry. Background technique [0002] Copper-clad laminate base paper is the base material used by the electronics industry to make composite and high-grade paper-based copper-clad laminates. In the past, there was no flame retardant requirement for this kind of paper. With the continuous improvement of people's living standards and the development of the information industry, especially the aviation and aerospace industries, higher requirements are put forward for the basic material of the electronics industry, copper clad laminates, especially the flame retardancy is an important indicator. Therefore, in the subsequent process of copper clad laminates, the existing base paper cannot meet the requirements for adding a flame retardant after passing through a water-soluble resin. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

Therefore, in the subsequent process of copper-clad laminates, the existing base paper cannot meet the requirements of adding a flame retardant after passing through a water-soluble resin once.