Reinforcing Material Tackifier Resin Adhesive Strength
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Solution Overview
Problem
The existing reinforcing materials, as described in Patent Document 1, require further improvement in reinforcement performance.
Innovation Solution
A reinforcing material comprising a resin layer with a thermosetting resin, diene rubber, a tackifier resin with a specific softening temperature and bromine value, and a vulcanizing agent, combined with a constraining layer, to enhance adhesive force and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional reinforcing materials are used, then basic reinforcement function is provided, but reinforcement performance is insufficient
Solution Approach 1:
The invention changes the chemical composition parameters of the resin layer by specifying a tackifier resin with a softening temperature of 75-100°C and a bromine value of 30 gBr2/100g or more. This parameter optimization ensures both strong adhesive force and high strength, resolving the contradiction between reliability and reinforcement performance.
Solution Approach 2:
The invention uses a composite resin layer containing thermosetting resin, diene rubber, and specifically formulated tackifier resin. This composite material approach combines the adhesive properties of the tackifier resin with the structural properties of the thermosetting resin and flexibility of diene rubber, achieving both high adhesive force and high strength simultaneously.
2Reliability
If the softening temperature of tackifier resin is increased, then adhesive force is improved, but material flexibility decreases
Solution Approach 1:
The invention precisely controls the softening temperature parameter within 75-100°C and bromine value at 30 gBr2/100g or more. This optimized parameter range ensures the tackifier resin provides sufficient adhesive force while maintaining the flexibility needed for reinforcement applications, resolving the contradiction between adhesive force and material flexibility.
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 proposed reinforcing material achieves improved reinforcement performance by ensuring strong adhesive force and enhanced strength of the cured resin layer, thereby effectively reinforcing objects such as metallic panels.
Implementation Method 1
the adhesive force of the resin layer can be ensured
Implementation Method 2
a resin layer containing a thermosetting resin, a diene rubber, a tackifier resin, and a vulcanizing agent
Data Source
AI summary
A reinforcing material that includes a resin layer and a constraining layer disposed on the resin layer. The resin layer contains a thermosetting resin, a diene rubber, a tackifier resin, and a vulcanizing agent. The thermosetting resin contains a flexible epoxy resin. The tackifier resin has a softening temperature of 75° C. or more and 100° C. or less. The tackifier resin has a bromine value of 30 gBr2/100 g or more.