Preparation method of mica tape and mica tape

Abstract

The invention provides a mica tape preparation method and the mica tape. The preparation method comprises: using emulsion-type silicone pressure-sensitive adhesive to sizing and wetting a reinforcing material; compounding with mica paper, drying and curing. The emulsion type silicone pressure-sensitive adhesive is used to bond the materials in the mica tape, and the bonding effect is good; in addition, there is no organic solvent in the process of preparing the mica tape from sizing to finally winding into a coil , There is no explosion and personal safety hazards in glue mixing and sizing, and there is no need for sizing solvent recovery, which avoids major fixed asset investment in solvent recovery.

Description

technical field [0001] The invention relates to the field of electric wires and cables, and more specifically relates to a mica tape preparation method and the mica tape. Background technique [0002] The master tape is an insulating material made of reinforcing materials such as mica paper and glass fiber cloth with an appropriate adhesive after baking and drying. It has excellent high temperature resistance and combustion resistance. The mica tape has good performance in normal conditions. Excellent flexibility, suitable for fire-resistant insulation layers of various fire-resistant electromagnetic cables and coils. But preparation mica tape also has the following deficiencies: (1) in the process of preparation, preparation raw material is relatively single, can not fuse multiple raw materials, causes the performance of mica tape to be relatively poor; (2) flame retardancy is not strong, when burning The range of flame spread is wide, the amount of smoke generated is larg...

AI Technical Summary

Problems solved by technology

But preparation mica tape also has the following deficiencies: (1) in the process of preparation, preparation raw material is relatively single, can not fuse multiple raw materials, causes the performance of mica tape to be relatively poor; (2) flame retardancy is not strong, when burning The range of flame spread is wide, the amount of smoke generated is large, and the texture of composite cables cannot be processed well; (3) During the drying process of mica paper, the mica paper is not dried uniformly, and the drying quality is relatively low

Epoxy resin and its modified resin binder will produce strong black smoke when exposed to open flames, and its combustion and decomposition products are also carcinogenic and highly polluting, which not only easily causes suffocation in fires, but also causes harm to the environment and human body