Polyphenylene Ether Resin Composition for Low Dielectric PCB Laminates
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Solution Overview
Problem
Conventional printed circuit board laminates prepared with epoxy resins have high dielectric constants, dissipation factors, and water absorption rates, which hinder high-frequency and high-speed signal transmission, and the compatibility issues between polyphenylene ether and epoxy resins limit the effective use of polyphenylene ether resin in improving electrical properties.
Innovation Solution
A resin composition comprising a polyphenylene ether resin with a specific structure, combined with a solvent and optional thermosetting resins and cross-linking agents, is used to create a prepreg and laminate that offers improved heat resistance, electrical properties, and ease of processing, while reducing dielectric constants and water absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If epoxy resin is used to prepare laminate, then heat resistance and mechanical strength are improved, but dielectric constant and water absorption rate increase, deteriorating signal transmission quality
Solution Approach 1:
The patent uses a composite resin system combining polyphenylene ether (PPE) as the base resin with epoxy resin as a curing agent. This composite material leverages the low dielectric constant and low water absorption of PPE while utilizing epoxy's excellent adhesion and cross-linking capabilities to achieve both low signal loss and high mechanical strength
Solution Approach 2:
The patent modifies the chemical structure parameters of the resin by selecting specific PPE variants with different molecular weights and structures (e.g., PPE-G, PPE-OH) and adjusting their ratios with epoxy resin to optimize the balance between dielectric properties and mechanical performance
2Object-generated harmful factors
If polyphenylene ether resin is used to improve electrical properties, then dielectric constant and water absorption are reduced, but heat resistance deteriorates
Solution Approach 1:
The patent merges polyphenylene ether resin with epoxy resin in a composite system where PPE provides low dielectric constant and low water absorption, while epoxy resin contributes high heat resistance through its cross-linked network structure, achieving synergistic effects that overcome the limitations of either resin alone
Solution Approach 2:
The patent creates local quality differentiation by using PPE as the continuous phase for electrical performance while incorporating epoxy resin regions for thermal stability, optimizing different properties in different functional zones of the laminate
3Object-generated harmful factors
If polyphenylene ether resin and epoxy resin are combined, then electrical properties are improved, but compatibility and processability deteriorate due to polarity difference
Solution Approach 1:
The patent uses compatible solvents and processing aids as intermediaries to facilitate the mixing of polyphenylene ether and epoxy resin, ensuring homogeneous distribution and proper adhesion despite their polarity differences, thereby improving processability while maintaining electrical performance
Data Source
AI summary
A resin composition is provided. The resin composition comprises:(a) a resin of formula (I):and(b) a solvent,wherein, X, Y, R1 to R4, A1, A2, m and n are as defined in the specification.