Continuous Fiber Resin Composites with Viscoelastic Interface Control
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Solution Overview
Problem
Existing continuous fiber reinforced resin composite materials suffer from insufficient interfacial characteristics between the matrix resin and reinforcing fibers, leading to issues with strength, rigidity, high-temperature characteristics, water absorption, impact characteristics, and appearance.
Innovation Solution
Adjusting the viscoelastic properties of the interface between continuous reinforcing fibers and a thermoplastic resin by optimizing peak temperature of tan δ, interfacial strength, and composition of the resin, including the use of specific thermoplastic resins and reinforcing fibers, to enhance the interfacial characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional continuous fiber reinforced resin composite materials are used with standard interfacing methods, then the basic composite structure is achieved, but the interfacial characteristics between matrix resin and reinforcing fibers are insufficient, leading to poor strength, rigidity, high-temperature characteristics, water absorption characteristics, impact characteristics, and appearance
Solution Approach 1:
The patent adjusts the glass transition temperature of the thermoplastic resin to be 50°C or higher to optimize the viscoelastic properties at the interface. This parameter change ensures that the resin maintains appropriate stiffness and bonding characteristics at service temperatures, directly improving interfacial strength and overall composite reliability
Solution Approach 2:
The patent uses a composite system consisting of continuous reinforcing fibers (glass, carbon, or aramid) combined with a specifically selected thermoplastic resin matrix. This composite material approach allows optimization of both the fiber and matrix properties to achieve superior interfacial characteristics, strength, and reliability simultaneously
2Ease of manufacture
If the glass transition temperature of the thermoplastic resin is lowered to improve processability, then easier manufacturing is achieved, but the high-temperature characteristics and interfacial strength deteriorate
Solution Approach 1:
The patent sets the glass transition temperature to 50°C or higher, which represents an optimization balance between processability and high-temperature performance. This parameter change ensures the resin remains workable during processing while maintaining sufficient thermal stability and interfacial strength in the final application
3Reliability
If conventional resin formulations are used, then standard manufacturing procedures are maintained, but water absorption characteristics and interfacial bonding are insufficient
Solution Approach 1:
The patent modifies the resin composition by selecting thermoplastic resins with specific glass transition temperatures and molecular structures. This parameter change in the resin formulation improves water absorption resistance and interfacial bonding without requiring complex multi-component systems, maintaining manufacturing simplicity while enhancing performance
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 resulting composite material exhibits improved strength, rigidity, high-temperature characteristics, water absorption, and impact resistance, with enhanced interfacial bonding and appearance.
Implementation Method 1
adjusting the viscoelastic properties of the interface of the continuous fiber reinforced resin composite material
Implementation Method 2
interfacial characteristics between a matrix resin and reinforcing fibers
Data Source
AI summary
A continuous fiber reinforced resin composite material of the present disclosure is a continuous fiber reinforced resin composite material containing continuous reinforcing fibers and a thermoplastic resin, wherein a peak temperature of tan δ at an interface between the continuous reinforcing fibers and the thermoplastic resin in the continuous fiber reinforced resin composite material is 80° C. or higher.