Conductive Resin Composition for Stable Low-Temperature Curing
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Solution Overview
Problem
The stability of 2-methylene-1,3-dicarbonyl compounds is compromised when combined with conductive particles, leading to unintended curing, which hinders their practical application in electronic components.
Innovation Solution
A resin composition comprising 2-methylene-1,3-dicarbonyl compounds, conductive particles, and monocarboxylic acids with 3 or more carbon atoms stabilizes the compound, preventing unintended curing and allowing for the production of stable pastes for electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a 2-methylene-1,3-dicarbonyl compound is combined with conductive particles for use in electronic components, then the compound can provide low-temperature curing capability and improve production efficiency, but the stability (pot life) of the compound is remarkably deteriorated and unintended curing occurs in a short time
Solution Approach 1:
A silane-modified polymer compound is introduced as an intermediary substance between the 2-methylene-1,3-dicarbonyl compound and conductive particles. This intermediary suppresses the unintended curing reaction induced by the conductive particles while maintaining the low-temperature curing capability of the dicarbonyl compound, thereby extending the pot life without sacrificing productivity
Solution Approach 2:
The chemical structure of the polymer is modified by introducing silane groups, which change the chemical parameters of the system. The silane-modified polymer interacts with the conductive particles to inhibit their curing-inducing effect, thus changing the stability parameter of the composition while preserving the desired curing properties
2Manufacturing precision
If a 2-methylene-1,3-dicarbonyl compound is used as a curable resin in a conductive paste, then complete curing can be achieved within a short time at low temperature, but unintended curing occurs when combined with conductive particles making the application impractical
Solution Approach 1:
The silane-modified polymer acts as a mediator that selectively interacts with conductive particles to suppress their harmful curing-inducing effect, while allowing the intended curing reaction of the 2-methylene-1,3-dicarbonyl compound to proceed normally when initiated by appropriate catalysts or conditions
3Stability of the object's composition
If various acids are added as stabilizers to suppress unintended curing of the 2-methylene-1,3-dicarbonyl compound in the presence of conductive particles, then stability is improved, but the invention seeks a more effective stabilization approach
Solution Approach 1:
Instead of adding various acids to change the chemical environment, the invention modifies the polymer structure itself by introducing silane groups. This structural parameter change enables the polymer to inherently suppress the unintended curing reaction, providing more effective stabilization without significantly increasing composition complexity
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 resin composition effectively suppresses unintended curing, enabling the production of stable pastes for electronic components that can be cured at low temperatures, improving production efficiency and mechanical properties.
Implementation Method 1
a 2-methylene-1,3-dicarbonyl compound, such as methylene malonate, is cured by anionic polymerization using a basic substance as an initiator
Implementation Method 2
A resin composition comprising the following components (a) to (c): (a) at least one 2-methylene-1,3-dicarbonyl compound, (b) at least one type of conductive particles, and (c) at least one monocarboxylic acid with a number of carbon atoms of 3 or more
Data Source
AI summary
A resin composition suppresses unintended curing of a 2-methylene-1,3-dicarbonyl compound in the presence of conductive particles to facilitate the production of a paste including the 2-methylene-1,3-dicarbonyl compound for electronic components. The resin composition includes (a) at least one 2-methylene-1,3-dicarbonyl compound, (b) at least one type of conductive particles and (c) at least one monocarboxylic acid with a number of carbon atoms of 3 or more.