Curing Agent Composition for 2-Methylene-1,3-Dicarbonyl Compounds
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Solution Overview
Problem
Two-part mixing curable composition systems face challenges in achieving proper curing ratios and preventing outgassing and bleeding due to human error and the presence of non-reactive liquid components, especially at low temperatures.
Innovation Solution
A curing agent composition comprising a basic initiator and a 2-methylene-1,3-dicarbonyl compound with specific molecular weight and structural units, allowing for a two-part mixing adhesive that cures effectively at low temperatures and maintains stability, even with slight deviations in mixing ratios, without liquid components separating from the polymerization system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a two-part mixing curable composition system is used, then curing can be achieved, but mixing ratio control becomes difficult and human error increases
Solution Approach 1:
The patent combines the base resin and curing agent into a single-component system where the curing agent is pre-dispersed as solid particles within the base resin. This eliminates the need for separate mixing operations and ratio control, while still achieving effective curing when the composition contacts water or moisture.
Solution Approach 2:
The patent uses solid particles containing the curing agent as an intermediary form. These particles act as a carrier that protects the curing agent during storage and application, then releases it effectively when needed, bridging the gap between single-component simplicity and two-component curing effectiveness.
2Ease of operation
If liquid components are added to the curing system, then ease of mixing is improved, but outgassing and bleeding occur
Solution Approach 1:
The patent changes the physical state of the curing agent from liquid to solid particles, and controls the liquid content in the base resin to be 10-60 mass%. This parameter optimization ensures adequate fluidity for application while preventing excess liquid that would cause outgassing and bleeding in the cured product.
Solution Approach 2:
The patent creates a heterogeneous structure where solid curing agent particles are dispersed throughout the liquid base resin matrix. This local distribution ensures that curing occurs where needed while the controlled liquid content prevents harmful effects throughout the entire composition.
3Reliability
If curing is performed at low temperatures, then electronic component reliability is maintained, but curing time increases
Solution Approach 1:
The patent selects a curing agent with appropriate reactivity that can cure effectively at low temperatures (80°C or lower). The solid particle formulation and controlled liquid content optimize the curing kinetics to achieve sufficient curing speed at low temperatures without requiring high heat that would damage electronic components.
4Manufacturing precision
If solid particles are used as curing agent, then ratio control is simplified, but dispersion uniformity becomes challenging
Solution Approach 1:
The patent optimizes the liquid content of the base resin to be 10-60 mass%, which provides sufficient fluidity to enable uniform dispersion of solid curing agent particles during application. This parameter control prevents particle aggregation while maintaining the advantages of solid particle formulation for ratio control.
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 ensures reliable curing at room temperature, prevents outgassing and bleeding, and allows for precise control of mixing ratios, enhancing the adhesion and sealing properties of electronic components.
Implementation Method 1
a curing reaction proceeds in a short period of time, resulting in solidification
Data Source
AI summary
A curing agent composition is capable of curing a base resin containing a 2-methylene-1,3-dicarbonyl compound. The curing agent composition contains a specific 2-methylene-1,3-dicarbonyl compound and an initiator. A two-part mixing adhesive contains the curing agent composition and a base resin containing another specific 2-methylene-1,3-dicarbonyl compound.