PCB Resin Composition for Heat Resistance and Stable Dielectric Loss
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Solution Overview
Problem
Existing resin compositions for printed wiring boards lack sufficient thermal resistance and dielectric properties, failing to meet the stringent requirements of modern electronic equipment.
Innovation Solution
A resin composition containing a compound represented by Formula (M1) and a cyanate ester compound (B) with two or more aromatic moieties per molecule, along with optional fillers, to enhance thermal resistance and reduce dielectric properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional resin compositions are used for printed wiring boards, then manufacturing and processing are relatively simple, but thermal resistance and dielectric properties are insufficient
Solution Approach 1:
The patent uses a composite resin system combining cyanate ester resin with specific maleimide compounds and poly(phenylene ether) compounds. This composite approach achieves high thermal resistance (glass transition temperature of 200°C or higher) and excellent dielectric properties by synergistically combining the heat resistance of cyanate ester with the low dielectric constant of poly(phenylene ether), while the maleimide compound enhances crosslinking density for improved thermal stability.
Solution Approach 2:
The patent optimizes specific compositional parameters: cyanate ester resin (30-90 parts), maleimide compound (5-60 parts), and poly(phenylene ether) compound (5-60 parts) per 100 parts of cyanate ester resin. It also controls the glass transition temperature at 200°C or higher and water absorption at 0.05% or lower, achieving the desired thermal and dielectric performance through precise parameter control.
2Reliability
If resin compositions with improved thermal resistance are developed, then dielectric properties improve, but water absorption increases affecting dielectric stability
Solution Approach 1:
The patent creates a composite system where cyanate ester resin provides thermal resistance, poly(phenylene ether) compound contributes low dielectric constant and low water absorption, and maleimide compound enhances crosslinking. This combination achieves glass transition temperature of 200°C or higher while maintaining water absorption at 0.05% or lower, ensuring dielectric stability even after moisture absorption.
3Reliability
If multiple resin components are combined to achieve high thermal resistance, then manufacturing complexity increases, but processing ease may deteriorate
Solution Approach 1:
The patent uses a prepreg form where the resin composition is pre-applied to the substrate in a controlled state. This preliminary preparation allows the complex multi-component resin system to be processed easily during lamination, as the composition is already optimized and positioned correctly, eliminating the need for complex mixing and application steps during manufacturing.
Data Source
AI summary
Provided is a resin composition having high thermal resistance and low dielectric properties, as well as a cured product, a prepreg, a metal foil-clad laminate, a resin sheet, and a printed wiring board. The resin composition contains a compound (A) represented by Formula (M1) and a cyanate ester compound (B) containing two or more aromatic moieties per molecule, the aromatic moieties being replaced by at least one cyanato group: where in Formula (M1), A is a four- to six-membered alicyclic group: