A laser direct structuring material with good comprehensive properties and its preparation method

Abstract

The invention discloses a laser direct structuring material with good comprehensive performance. The laser direct structuring material has good heat stability and high toughness, and is particularly applicable to laser direct structuring. The laser direct structuring material is prepared from the following ingredients in percentage by weight: 65 to 95 percent of polycarbonate, 1 to 20 percent of laser direct structuring additives, 1 to 15 weight percent of tougheners, 1 to 10 percent of inorganic nanometer particles and 0 to 2 percent of other different additives, wherein the laser direct structuring additives comprise a copper-containing laser direct structuring additive and a tin-containing laser direct structuring additive; the ratio of the copper-containing laser direct structuring additive to the tin-containing laser direct structuring additive is (1 to 10) to (9 to 10). The invention also discloses a method for preparing the laser direct structuring material. The laser direct structuring material obtained by the method shows high heat stability and high notch impact strength (being greater than 500J / m) in the processing process.

Description

technical field [0001] The invention belongs to the technical field of laser direct structuring material preparation, and in particular relates to a laser direct structuring material with good thermal stability and high toughness and a preparation method thereof. Background technique [0002] LDS is the abbreviation of Laser Direct Structuring, that is, laser direct structuring, which is a 3D-MID production technology of professional laser processing, injection and electroplating process. The function of components and the support and protection of the plastic shell, as well as the shielding and antenna functions produced by the combination of mechanical entities and conductive patterns, form a so-called 3D-MID, which is suitable for the production of local thin lines. [0003] LDS can avoid environmental pollution and water consumption caused by traditional plastic electroplating process to a large extent, simplify the production process, and provide flexible and changeable...

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Problems solved by technology

[0007] For the specific application of the material, if the laser direct structuring additive is not properly selected, it may cause defects such as silver wires and pitting on the surface after injection molding, resulting in slow or even unplating of electroless plating in the later stage, and failure of the 100-grid test. ; or the mechanical properties drop significantly after electroless plating, which cannot meet the requirements of the material performance

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