Two-Component Methacrylic Adhesive Low Temperature Peel Strength
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Solution Overview
Problem
Conventional adhesive compositions face challenges in maintaining high peel strength at low temperatures, particularly in environments below freezing, and often have issues with odor and volatility.
Innovation Solution
A two-component (meth) acrylic adhesive composition is developed, comprising specific polymerizable vinyl monomers, a polymerization initiator, a reducing agent, and an elastomer with controlled (meth) acrylonitrile content, which enhances peel strength at low temperatures while minimizing odor and volatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional adhesive compositions are used, then adhesion strength is achieved at room temperature, but peel strength deteriorates at low temperatures
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive by incorporating specific elastomers with controlled (meth)acrylonitrile content (10-30 mol%) and specific vinyl monomers with defined structures. This parameter optimization enables the adhesive to maintain flexibility and bond strength at low temperatures while achieving high peel strength, directly resolving the contradiction between room temperature adhesion and low temperature performance.
Solution Approach 2:
The patent creates a composite adhesive system combining multiple components: polymerizable vinyl monomers with specific structures, polymerization initiators, reducing agents, and elastomers with controlled (meth)acrylonitrile content. This composite formulation synergistically improves both room temperature adhesion and low temperature peel strength, eliminating the trade-off between these performance requirements.
2Strength
If adhesive compositions with high peel strength are developed, then bonding strength is improved, but odor and volatility increase
Solution Approach 1:
The patent optimizes the chemical composition by selecting specific vinyl monomers with lower volatility and controlling the (meth)acrylonitrile content in elastomers to 10-30 mol%. This parameter control reduces odor and volatility while maintaining high peel strength through the synergistic effect of the optimized component combination, thereby resolving the contradiction between bonding strength and harmful emissions.
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 high peel strength and impact resistance at low temperatures with reduced odor and volatility, making it suitable for use in various environments, including those with inadequate ventilation and cold conditions.
Implementation Method 1
a polymerization initiator; a reducing agent; and a polymerizable vinyl monomer
Implementation Method 2
an elastomer having no polymerizable unsaturated double bond at the end and having 10 to 30 mol % of a (meth) acrylonitrile
Data Source
AI summary
A two-component (meth) acrylic adhesive excellent in peel strength at low temperature and impact resistance is provided. A composition comprising components of (1) to (4): (1) a polymerizable vinyl monomer comprising (1-1) to (1-4); (2) a polymerization initiator; (3) a reducing agent; and (4) an elastomer having no polymerizable unsaturated double bond at the end and having 10 to 30 mol % of a (meth) acrylonitrile. A composition comprising components of (1) to (4): (1) a polymerizable vinyl monomer comprising (1-1) to (1-4); (2) a polymerization initiator; (3) a reducing agent; (4) an elastomer having a polymerizable unsaturated double bond at the end and having 10 to 30 mol % of a (meth) acrylonitrile; and (5) an elastomer having no polymerizable unsaturated double bond at the end.