A kind of long-life heat-resistant and pressure-resistant insulating coating for mirror plate

Abstract

The invention discloses a long-life heat-and-pressure-resistant insulating coating for a mirror plate. The coating comprises materials in parts by weight as follows: 30-32 parts of silicon oxide, 30-32 parts of cobalt oxide, 6-8 parts of strontium oxide, 6-8 parts of scandium oxide, 6-8 parts of tin oxide, 2-4 parts of boron oxide and 2-4 parts of beryllium oxide. According to the coating, silicon oxide and cobalt oxide are taken as cores, multiple oxides with a synergistic effect are introduced, and accordingly, the surface strength, the heat and pressure resistance and the wear resisting property of the coating at the high temperature are effectively improved; titanium carbide, cerium oxide and zinc oxide are added to the coating, so that the expansion degree of the mirror plate to the temperature difference and the pressure difference is effectively improved, and bad influence caused by expansion of the mirror plate on the use effect and the service life of the mirror plate can be avoided.

Description

technical field [0001] The invention relates to an insulating coating, in particular to an insulating coating coated on the surface of a metal plate, in particular to a high-life heat-resistant and pressure-resistant insulating coating for protecting a mirror plate. Background technique [0002] When manufacturing the main base material of the circuit board (PCB), it is necessary to use a voltage machine to laminate multiple layers of different materials. The working principle of this voltage machine is to heat the processed glue through copper foil (or aluminum foil). Adhesive resin material, and press the multi-layer material by applying a certain pressure for at least half an hour, so as to make the circuit board base material, and in the process of pressing with an electric machine, due to cost considerations, a single pressing operation often needs to be done at the same time. Pressing multiple pieces of circuit board substrates, and in order to prevent multiple pieces ...

AI Technical Summary

Problems solved by technology

[0003] The biggest difference between the mirror plate and the ordinary metal plate is that there is a special coating on the surface, which has a great influence on the performance of the mirror plate. In the lamination process, the performance requirements of the mirror plate are very high. During operation, both high temperature heat (greater than 300°C) and strong pressure (greater than 50MPa) are generated, which requires the mirror plate to have excellent thermal pressure resistance, that is, the mirror plate needs to have a very high limit temperature resistance And the ultimate pressure resistance, and, what is more important, the surface of the mirror plate must still be very smooth after repeated hot pressing, no depressions on the surface, no expansion and contraction, and currently in the prior art This requirement cannot be fulfilled. Generally, after the mirror plate of the prior art can be used for about 150 times at room temperature, the surface begins to be sunken, resulting in the failure of the mirror plate, and it can only be used for about 60 times at high temperature before it fails.

Images