PCB Resin Composition Balancing Dielectric and Moisture Performance
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Solution Overview
Problem
Conventional materials for circuit boards face challenges in meeting the property requirements of multi-layer configuration, high density trace interconnection, and high speed signal transmission, particularly in terms of PCT water absorption ratio, dielectric constant, dissipation factor, copper foil peeling strength, thermal conductivity, and glass transition temperature.
Innovation Solution
A resin composition comprising 100 parts by weight of a thermosetting resin, 10 to 40 parts by weight of a fluorene-containing compound, and 210 to 400 parts by weight of silica, with specific structural formulas and additives, is developed to enhance properties such as water absorption ratio, dielectric constant, dissipation factor, copper foil peeling strength, thermal conductivity, and glass transition temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional materials are used for circuit boards, then manufacturing simplicity is maintained, but multiple property requirements (water absorption ratio, dielectric constant, dissipation factor, copper foil peeling strength, thermal conductivity, glass transition temperature) cannot be simultaneously met
Solution Approach 1:
The patent employs composite materials by combining thermosetting resin with specific fluorene-containing compounds and silica fillers in defined proportions. This composite approach enables simultaneous optimization of multiple properties including water absorption ratio, dielectric constant, dissipation factor, copper foil peeling strength, thermal conductivity, and glass transition temperature, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The patent utilizes parameter changes by precisely controlling the weight ratios of components (thermosetting resin: 100 parts, fluorene-containing compound: 10-40 parts, silica: 210-400 parts) and adjusting chemical structures (Formula 1 with n=0-2, Formula 2 with w=1-20) to achieve optimal performance across multiple parameters simultaneously.
2Reliability
If resin composition is optimized for multiple properties, then performance requirements are met, but formulation complexity increases
Solution Approach 1:
The patent simplifies formulation by establishing specific parameter ranges: thermosetting resin at 100 parts, fluorene-containing compound at 10-40 parts, and silica at 210-400 parts. These predefined parameters make the complex multi-property optimization reproducible and ease of manufacture while maintaining high reliability.
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 resin composition achieves improved performance with PCT water absorption ratio less than 0.33%, dielectric constant less than 3.12, dissipation factor less than 0.0029, copper foil peeling strength greater than 3.13 lb/in, thermal conductivity greater than 0.21 W/(m·K), and glass transition temperature greater than 202°C, addressing the challenges of conventional materials.
Implementation Method 1
PCT water absorption ratio less than 0.33%
Implementation Method 2
thermal conductivity greater than 0.21 W/(m·K)
Implementation Method 3
vinyl group-containing polyphenylene ether resin, a maleimide resin, a styrene-based compound
Data Source
AI summary
A resin composition includes 100 parts by weight of a thermosetting resin, 10 parts by weight to 40 parts by weight of a fluorene-containing compound and 210 parts by weight to 400 parts by weight of silica. The resin composition may be used to make various articles, including a resin film, a prepreg, a laminate or a printed circuit board, and at least one or more of the following properties can be improved, including PCT water absorption ratio, dielectric constant, dissipation factor, copper foil peeling strength, thermal conductivity and glass transition temperature.