PC composite material used for laser direct forming and preparation technology thereof

Abstract

The invention relates to the field of new plastic materials, and specifically relates to a PC composite material used for laser direct forming and a preparation technology thereof. The PC composite material used for laser direct forming is prepared from the following components in parts by weight: 50 to 80 parts of PC, 10 to 50 parts of basalt fiber, 3 to 8 parts of a laser additive, 0.5 to 2 parts of an antioxidant, 0.2 to 2 parts of a heat stabilizer, 3 to 8 parts of a flexibilizer, 1 to 2 parts of a lubricating agent, 1 to 2 parts of a coupling agent and 2 to 6 parts of a compatilizer; the antioxidant consists of a hindered phenol antioxidant and a phosphite ester antioxidant; the heat stabilizer consists of a metal compound, a layered double hydroxide and an ultraviolet absorber; and the laser additive is nano-copper powder modified through acrylic ester. The PC composite material used for laser direct forming disclosed by the invention is high in laser-induced electroplating performance, high in heat and oxygen resistant performance, high in aging-resistant performance and high in mechanical performance.

Description

technical field [0001] The invention relates to the field of new plastic materials, in particular to a PC composite material for laser direct molding and a preparation process thereof. Background technique [0002] Laser Direct Structuring (LDS for short) is a 3D-MID (Three-dimensional molded interconnect device) production technology that combines injection, laser processing and electroplating. Its principle is to endow ordinary plastic components and circuit boards with The electrical interconnection function enables plastic shells and structural parts to combine with conductive circuits to produce shielding, antenna and other functions in addition to supporting and protecting functions. LDS materials are mainly laser additives added to the matrix resin, and the blended particles are injection molded into parts and then chemically plated to form conductive lines. The advantage is that the line design is more free and firm. [0003] The process of making molded interconnec...

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Problems solved by technology

[0004] The polymer composite material with laser direct molding performance needs to have excellent laser-induced electroplating performance and excellent thermal-oxidative aging resistance. In the prior art, in order to improve the thermal-oxidative aging resistance of the composite material, laser direct molding Molding additives (LDS additives) are used to increase the thermal and oxidative aging resistance of composite materials, but because such additives will directly react with the resin or be called a catalyst for the degradation reaction of the resin molecular chain, it will eventually lead to the resin macromolecular chain being easy to exercise, Affect the mechanical properties of composite materials

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