Curable Resin Composition for Fire Retardant Low Dielectric Applications
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Solution Overview
Problem
Conventional curable resins fail to provide electric insulating materials with simultaneous low dielectric properties, heat resistance, and fire retardancy, especially for high-frequency applications and lead-free soldering, and often compromise on dielectric properties when fire retardancy is enhanced.
Innovation Solution
A curable resin composition with a specific structure, including a repeating unit and reactive groups like (meth)acryloyloxy, vinyl benzyl ether, and allyl ether, combined with a radical polymerization initiator and phosphorous-based fire retardants, to achieve excellent fire retardancy, heat resistance, and low dielectric properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fire retardant is blended in a large amount to satisfy fire retardancy, then fire retardancy is improved, but dielectric properties deteriorate
Solution Approach 1:
The patent uses a composite resin system combining polyarylate main chain structure with vinyl terminal groups, crosslinking agents, and fire retardants to achieve both fire retardancy and acceptable dielectric properties through synergistic material composition
Solution Approach 2:
The patent optimizes the chemical structure parameters of the polyarylate resin, specifically incorporating vinyl terminal groups and controlling the aromatic ring substitution patterns to reduce dielectric constant while maintaining fire retardancy through proper fire retardant selection
2Ease of manufacture
If conventional curable resins are used, then ease of manufacture is improved, but heat resistance and dielectric properties deteriorate
Solution Approach 1:
The patent modifies the chemical structure parameters of conventional resins by introducing vinyl terminal groups on polyarylate chains and selecting specific crosslinking agents to achieve high glass transition temperatures and low dielectric constants while maintaining manufacturability
Solution Approach 2:
The patent creates a composite curable resin system combining polyarylate with vinyl terminals, crosslinking agents (such as glycidyl compounds or isocyanates), and fire retardants to simultaneously achieve heat resistance, low dielectric properties, and fire retardancy
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 curable resin composition effectively imparts fire retardancy, heat resistance, and low dielectric properties to the cured products, making them suitable for high-frequency applications and lead-free soldering, while maintaining dielectric performance.
Implementation Method 1
a curable resin composition containing the curable resin, a radical polymerization initiator, and a fire retardant
Data Source
AI summary
An object is to provide a cured product and the like with excellent fire retardancy, heat resistance, and dielectric properties by using a curable resin having a specific structure and a curable resin composition containing the curable resin, a radical polymerization initiator, and a fire retardant. Specifically provided are a curable resin represented by General Formula (1) and a curable resin composition containing the curable resin, a radical polymerization initiator (B), and a fire retardant (C):in the formula, Ra and Rb each independently represent an alkyl group, an aryl group, an aralkyl group, or a cycloalkyl group with a carbon number of 1 to 12; k indicates an integer of 0 to 3; X represents a hydrocarbon group; and Y represents General Formula (2) or (3) below:in the formula, Z represents an alicyclic group, an aromatic group, or a heterocyclic group.