Dipping method, dipping piece and laminating plate

Abstract

The invention discloses a dipping method. The method includes the steps of S10, conducting presoaking, wherein reinforcing materials and glue are provided, the glue comprises resin composite and solvent, and the reinforcing materials are presoaked in glue; S20, conducting pre-drying, wherein the presoaked composite is pre-dried, the drying temperature is controlled between 110 DEG C and 170 DEG C, solvent is dried away, resin is attached to the reinforcing materials to form the composite, and the proportion of volatile matter in the pre-dried composite is controlled between 0.25% and 3%. By strictly controlling the pre-drying temperature and controlling the content of volatile matter in the pre-dried composite between 0.25% and 3%, the reliability of a prepared dipping piece and a corresponding laminating plate is well kept, and good industrial application prospects are achieved.

Description

technical field

[0001] The invention relates to the technical field of copper-clad laminates, in particular to a method for impregnating reinforcing materials for copper-clad laminates, a dipping sheet prepared by the method, and a laminate containing the dipping sheet. Background technique

[0002] Traditional composite impregnated sheet preparation processes include wet and dry methods. in, figure 1 It is a structural schematic diagram of a dipping tank in the prior art, such as figure 1 As shown, the wet process includes: first, the reinforcing material 100 enters the glue tank 200, and passes through the rollers 300 in the glue tank 200 in turn, and after passing through the clamping shaft 400, it is dried in an oven to form a semi-cured composite material impregnated piece. According to the wet process, the glue content of the composite impregnated sheet can be adjusted by the concentration of the glue, the speed of the reinforcing material, the tension, the distance...

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