Heat-Curable Siloxane Epoxy Composition for Adhesive Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing heat-curable compositions using epoxy mixtures and curing agents lack novelty and effectiveness in achieving strong adhesive properties and heat resistance.
Innovation Solution
A heat-curable composition comprising a first component with a siloxane having epoxy groups and a second component with a phenol or acyclic aliphatic compound having a ring-opening functional group, which reacts with the epoxy groups to form cross-linked structures, enhancing adhesive strength and heat resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional epoxy mixtures and curing agents are used, then the composition can be synthesized, but the adhesive strength and heat resistance are insufficient
Solution Approach 1:
The patent uses a composite curing system combining a siloxane-based epoxy mixture with a specific phenolic curing agent. This composite approach creates cross-linked polymer networks that simultaneously provide strong adhesive properties and heat resistance, resolving the contradiction between these two performance requirements through synergistic material interaction.
Solution Approach 2:
The patent modifies the chemical structure parameters of the curing agent by specifying a phenolic compound with particular molecular weight ranges and functional group configurations. These parameter changes optimize the balance between adhesive strength and heat resistance by controlling the cross-linking density and network structure of the cured material.
2Strength
If the phenol structure is highly constrained, then the adhesive strength improves, but the synthesis complexity increases
Solution Approach 1:
The patent segments the phenolic curing agent into specific structural components with defined functional groups and molecular weight ranges. This segmentation allows for systematic optimization of adhesive strength while maintaining manageable synthesis complexity by focusing on modular structural elements rather than entirely new molecular designs.
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 composition achieves significant improvements in adhesive strength and heat resistance, suitable for various applications including multi-material structures and automotive components, with excellent impact resistance and durability.
Implementation Method 1
a ring-opening functional group (excluding a hydroxy group) that is a functional group having an action of ring-opening the epoxy group
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The heat-curable composition according to the present disclosure includes: a first component that contains a siloxane having an epoxy group; and a second component that contains at least one of a phenol having a structure in which a ring-opening functional group (excluding a hydroxy group) that is a functional group having an action of ring-opening the epoxy group is bound to a benzene ring, or an acyclic aliphatic compound having a structure in which the ring-opening functional group is bound to an end. The heat-curable composition production method according to the present disclosure includes: the first component preparation step of preparing a first component that contains a siloxane having an epoxy group; the second component preparation step of preparing a second component that contains at least one of a phenol having a structure in which a ring-opening functional group (excluding a hydroxy group) that is a functional group having an action of ring-opening the epoxy group is bound to a benzene ring, or an acyclic aliphatic compound having a structure in which the ring-opening functional group is bound to an end; and the mixing step of mixing the first component and the second component.