Antimony LDS Resin for Plated Flame-Retardant Electronics
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Solution Overview
Problem
The challenge is to develop a resin composition for laser direct structuring that achieves both high platability and flame retardancy, particularly when using halogen-containing flame retarders, as existing methods fail to form a plating layer effectively with such additives.
Innovation Solution
A resin composition combining a halogen-containing flame retarder with an antimony-containing laser direct structuring additive, along with an inorganic filler like glass fiber, achieves high platability and flame retardancy, with the antimony content ensuring effective plating and mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a halogen-containing flame retarder is blended to a thermoplastic resin to improve flame retardancy, then flame retardant properties are improved, but platability is deteriorated (plating cannot be formed)
Solution Approach 1:
The patent changes the chemical composition parameters by introducing an antimony-containing laser direct structuring additive with specific characteristics (particle size, content ratio) that modifies the surface properties during laser irradiation, enabling plating formation despite the presence of halogen-containing flame retarder in the bulk resin
Solution Approach 2:
The patent creates a composite material system combining thermoplastic resin, halogen-containing flame retarder, and antimony-containing laser direct structuring additive, where the synergistic interaction between components allows simultaneous achievement of flame retardancy and platability
2Reliability
If an antimony-containing flame retarder auxiliary is added to achieve flame retardancy, then flame retardant properties are improved, but platability is further deteriorated
Solution Approach 1:
The patent precisely controls the content ratio of antimony-containing flame retarder auxiliary to be 0.5 parts by weight or less per 100 parts by weight of thermoplastic resin, and optimizes the content ratio of antimony-containing laser direct structuring additive to 1 to 30 parts by weight, creating a parameter window where both flame retardancy and platability are achieved
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition enables the formation of a plated resin molding with excellent flame retardant properties, rated as V-0 in the UL 94 test, while maintaining high platability and mechanical strength, suitable for manufacturing antenna-equipped portable electronic device parts.
Implementation Method 1
LDS is a technique for forming a plating layer, by irradiating laser on the surface of a resin molding that contains a LDS additive, to thereby activate only the irradiated area
Implementation Method 2
combined use of the halogen-containing flame retarder and an antimony-containing LDS additive successfully achieved a high level of flame retardant
Data Source
AI summary
Provided is a resin molding that uses a resin composition capable of achieving high platability, while being imparted flame retardant by the halogen-containing flame retarder, a method for manufacturing a plated resin molding, and a method for manufacturing an antenna-equipped portable electronic device part. The resin composition comprises 100 parts by weight of a thermoplastic resin; 5 to 100 parts by weight of a halogen-containing flame retarder; and, 1 to 30 parts by weight of a laser direct structuring additive, wherein the laser direct structuring additive contains antimony, and; a content of an antimony-containing flame retarder auxiliary is 0.5 parts by weight or less per 100 parts by weight of the thermoplastic resin.