Active Ester Resin Composition for Low High-Temperature Dielectric Loss
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Solution Overview
Problem
Conventional active ester resins struggle to achieve a satisfactory dielectric dissipation factor in high temperature environments, which is essential for reducing transmission loss in electronic components operating at high frequencies.
Innovation Solution
The development of an active ester resin containing an α-methylbenzyl group, which restricts molecular motion and enhances dielectric properties, particularly at high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional active ester resin is used, then dielectric dissipation factor is excellent at normal temperature, but dielectric dissipation factor deteriorates at high temperature
Solution Approach 1:
The patent modifies the chemical structure of the active ester resin by introducing an α-methylbenzyl group at the para position of the aromatic ring. This structural parameter change restricts molecular motion through steric hindrance, thereby maintaining low dielectric dissipation factor even at elevated temperatures up to 90°C.
Solution Approach 2:
The patent creates a composite molecular structure combining the active ester functional group with the α-methylbenzyl substituted aromatic ring system. This composite structure integrates the crosslinking reactivity of active esters with the thermal stability and restricted molecular motion characteristics of the bulky α-methylbenzyl group, achieving both excellent dielectric properties and high temperature performance.
2Reliability
If α-methylbenzyl group is introduced to improve high temperature dielectric properties, then molecular motion is restricted and dielectric dissipation factor improves, but molecular flexibility decreases
Solution Approach 1:
The patent applies the α-methylbenzyl group substitution at specific positions (para position) of the aromatic ring in the active ester resin molecule. This localized structural modification restricts molecular motion only in the regions where the bulky groups are positioned, while preserving flexibility in other parts of the molecular chain, thereby achieving reduced dielectric dissipation without completely sacrificing molecular flexibility.
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 active ester resin with α-methylbenzyl groups effectively reduces the dielectric dissipation factor in high temperature environments, improving the insulating properties of electronic components and reducing transmission loss.
Implementation Method 1
The inventors' discovery that the aforementioned problems can be solved by an active ester resin containing an α-methylbenzyl group; based on this finding the present invention has been completed
Data Source
AI summary
An active ester resin comprising one or more of α-methylbenzyl groups per one molecule is capable of achieving an excellent dielectric dissipation factor in a high temperature environment.