Curing Agent Composition for Low-Loss High-Temperature Laminates
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Solution Overview
Problem
Existing curing agents for high-frequency copper-clad laminations suffer from partial volatilization due to low decomposition temperatures, leading to curing deviations and reduced heat resistance and durability.
Innovation Solution
A curing agent composition comprising a first compound and a second compound, each with specific alkyl or alkenyl groups, forming a network structure with increased void size and improved chemical resistance, high-temperature stability, and mechanical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If triallyl isocyanurate (TAIC) is used as a curing agent, then low dielectric characteristics are achieved, but decomposition temperature is too low causing volatilization and curing deviations
Solution Approach 1:
The patent divides the single curing agent (TAIC) into multiple components: a main curing agent (allyl isocyanurate or similar) and a synergistic compound (such as dimethylol propionic acid or other carboxylic acids). This segmentation allows each component to contribute different properties - the main curing agent provides crosslinking functionality for low dielectric characteristics, while the synergistic compound raises the decomposition temperature and reduces volatilization.
Solution Approach 2:
The patent creates a composite curing agent system by combining compounds with different chemical structures and properties. The synergistic effect between the main curing agent and the added compound produces a curing composition that achieves both low dielectric characteristics and high heat resistance, overcoming the limitations of using TAIC alone.
2Manufacturing precision
If TAIC is crosslinked under vacuum and high temperature conditions, then curing is achieved, but partial volatilization occurs causing curing deviations
Solution Approach 1:
The patent applies preliminary anti-action by adding the synergistic compound (such as dimethylol propionic acid or other carboxylic acids) to the curing agent composition before the curing process. This preliminary addition prevents volatilization and curing deviations by forming a more stable crosslinked structure that resists decomposition under vacuum and high temperature conditions.
Solution Approach 2:
The patent changes the chemical composition parameters of the curing agent system by introducing compounds with higher thermal stability. The synergistic compound modifies the overall decomposition characteristics of the curing agent composition, raising the decomposition temperature and reducing volatilization during high-temperature curing processes.
3Reliability
If a bulkier benzyl group is used instead of allyl group, then dielectric characteristics are improved, but network structure size increases
Solution Approach 1:
The patent applies local quality by strategically selecting specific molecular structures for the synergistic compound that create localized improvements in dielectric properties without compromising the overall network structure. The carboxylic acid groups form localized crosslinking zones that enhance dielectric characteristics while maintaining appropriate void distribution throughout the polymer matrix.
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 curing agent composition achieves a higher decomposition temperature of 150°C or more, enhancing chemical resistance and high-temperature stability while reducing dielectric loss, resulting in improved dielectric characteristics and mechanical properties.
Implementation Method 1
The TAIC is crosslinked with a polymer via double bonds present at the terminus by an initiator, and the polymer is cured
Implementation Method 2
The curing agent composition may have a 5% decomposition temperature Td of 150°C or more
Data Source
AI summary
Provided is a curing agent composition including: a first compound represented by Formula 1; and a second compound represented by Formula 2. When the curing agent composition is used, dielectric characteristics, chemical resistance, and high-temperature stability may be improved.