Resin Composition Adhesion and Compatibility for 5G PCBs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional resin compositions with epoxy resin as the main component fail to meet the requirements of high-frequency and high-speed electronic products due to compatibility issues with elastomers, leading to phase separation and deteriorated properties such as peeling strength and electric properties, especially in advanced applications like 5G technology.
Innovation Solution
A resin composition comprising a compound with a specific structure and a vinyl-containing elastomer in a specific ratio, along with a polyphenylene ether resin having an unsaturated functional group, to improve compatibility and achieve excellent electric properties, heat resistance, and adhesion strength to copper foils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If epoxy resin is used as the main component in resin composition, then good adhesion strength to copper foils is achieved, but compatibility problems occur with elastomers resulting in phase separation and deteriorated electric properties
Solution Approach 1:
A compatibilizer comprising a polyolefin resin and a specific compound (formula I) is introduced as an intermediary substance between the epoxy resin and elastomer. The polyolefin resin provides compatibility with the elastomer while the compound of formula I maintains adhesion to copper foils, thereby mediating the interface between incompatible materials and preventing phase separation.
Solution Approach 2:
The invention creates a multi-component composite resin system combining epoxy resin, elastomer, and a specialized compatibilizer mixture. This composite approach allows each component to contribute its beneficial properties (adhesion from epoxy, flexibility from elastomer) while the compatibilizer ensures homogeneous distribution and prevents macroscopic phase separation.
2Reliability
If polyphenylene ether (PPE) resin is used to improve electric properties, then low Dk and Df values are achieved, but limits in electric properties prevent further improvement for extreme low Dk/Df requirements
Solution Approach 1:
The invention modifies the resin system by incorporating low-polarity compounds (such as polyolefin resin and specific additives of formula I) that have lower dielectric constants than PPE. This parameter change in the compositional makeup allows the system to achieve Dk and Df values below those of conventional PPE-based materials, meeting the extreme requirements for 5G applications.
3Reliability
If elastomer is added to resin composition to improve flexibility and electric properties, then good electric properties are achieved, but phase separation occurs resulting in deteriorated peeling strength
Solution Approach 1:
The compatibilizer acts as a mediator that bridges the epoxy resin matrix and elastomer dispersion. The polyolefin resin portion compatibilizes with the elastomer while the compound of formula I maintains interaction with the epoxy and copper surfaces, ensuring that the elastomer remains uniformly dispersed and continues to provide flexibility and electric property improvements without sacrificing peeling strength.
Data Source
AI summary
A resin composition is provided. The resin composition comprises:(A) a compound having a structure of formula (I),wherein R1 is an organic group; and(B) a vinyl-containing elastomer,wherein the weight ratio of the compound having the structure of formula (I) to the vinyl-containing elastomer is 20:1 to 1:1.