Fluorinated Resin Composition for Low-Loss Metal Clad Substrates
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Solution Overview
Problem
Existing benzoxazine resins fail to meet the increasing property requirements for metal clad substrates, particularly in terms of thermal expansion, water absorption, and dielectric properties.
Innovation Solution
A resin composition comprising 5 phr to 15 phr of a maleimide resin, 5 phr to 30 phr of a benzoxazine resin, 40 phr to 70 phr of an epoxy resin, and 40 phr to 60 phr of fillers, with the maleimide resin containing 10 wt % to 50 wt % fluorine atoms, which is reactively grafted with the benzoxazine resin to enhance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional benzoxazine resin is used, then basic structural properties are maintained, but thermal expansion coefficient, water absorption, and dielectric properties fail to meet advanced requirements
Solution Approach 1:
The patent employs a composite resin system combining fluorinated maleimide resin (5-15 phr), benzoxazine resin (5-30 phr), and epoxy resin (40-70 phr) with fillers (40-60 phr). This multi-component composite approach allows synergistic improvement of thermal stability, low water absorption, and dielectric properties, overcoming the limitations of single-resin systems while meeting advanced substrate requirements.
Solution Approach 2:
The patent modifies the chemical composition parameters by introducing fluorinated maleimide resin with specific fluorine content (10-50 wt%) and optimizing the ratios of different resin components. This parameter optimization enables precise control over the cured product's thermal expansion coefficient, water absorption rate, and dielectric characteristics to match high-performance substrate specifications.
2Reliability
If fluorine-containing maleimide resin is added to reduce water absorption and dielectric loss, then dielectric properties improve, but resin composition complexity increases
Solution Approach 1:
The patent optimizes the fluorine content parameter within the maleimide resin (10-50 wt%) and controls the maleimide resin quantity (5-15 phr) to achieve the desired dielectric loss reduction. By parameter optimization rather than indefinite component addition, the patent balances performance improvement with compositional manageability.
Solution Approach 2:
The patent integrates fluorinated maleimide resin into a multi-component composite system where each component serves specific functions: maleimide for dielectric performance, benzoxazine for structural stability, epoxy for adhesion and flexibility, and fillers for mechanical reinforcement. This functional distribution across components achieves superior dielectric properties while maintaining compositional organization.
3Reliability
If multiple resin types are combined to enhance overall properties, then performance meets advanced criteria, but manufacturing process complexity increases
Solution Approach 1:
The patent specifies predetermined composition ranges for each component (maleimide resin 5-15 phr, benzoxazine resin 5-30 phr, epoxy resin 40-70 phr, fillers 40-60 phr) that can be prepared in advance according to the formulation. This preliminary definition of composition parameters simplifies manufacturing by providing clear mixing ratios and component specifications, reducing process complexity despite the multi-component nature.
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 results in a metal clad substrate with reduced thermal expansion, water absorption, and dielectric loss, meeting advanced performance criteria.
Implementation Method 1
the fluorine-containing maleimide compound is reactively grafted with a molecular side chain of the benzoxazine resin
Data Source
AI summary
A resin composition and a metal clad substrate are provided. The resin composition includes: 5 phr to 15 phr of a maleimide resin, 5 phr to 30 phr of a benzoxazine resin, 40 phr to 70 phr of an epoxy resin, and 40 phr to 60 phr of fillers. An amount of fluorine atoms contained in the maleimide resin ranges from 10 wt % to 50 wt %.