Resin Foam Composite Using Low-Solubility Blowing Agent
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Solution Overview
Problem
Foams used in combination with resin members experience deterioration such as discoloration or deformation when a thermoplastic resin foam formed using 1-chloro-3,3,3-trifluoropropene is stored with a resin member for a long term.
Innovation Solution
A composite comprising a resin foam formed using 1-chloro-2,3,3,3-tetrafluoropropene as a blowing agent, combined with a resin member made from specific resins like polycarbonate, polystyrene, or polyphenylene ether, which suppresses the deterioration of the resin member's outer appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thermoplastic resin foam is formed using 1-chloro-3,3,3-trifluoropropene as a blowing agent, then the foam can be produced with desired cushioning properties, but the resin member in combination deteriorates in outer appearance (discoloration or deformation) during long-term storage
Solution Approach 1:
The patent changes the chemical parameter of the blowing agent from 1-chloro-3,3,3-trifluoropropene to 1-chloro-2,3,3,3-tetrafluoropropene. This parameter change (molecular structure modification) reduces the solubility of the blowing agent in the resin member, thereby preventing the harmful effect of discoloration and deformation while maintaining the foam's cushioning properties.
2Productivity
If 1-chloro-3,3,3-trifluoropropene is used as a blowing agent, then the foam expansion is effective, but the blowing agent has high solubility in the resin member causing long-term deterioration
Solution Approach 1:
The patent modifies the chemical parameter of the blowing agent by replacing a hydrogen atom with a fluorine atom, creating 1-chloro-2,3,3,3-tetrafluoropropene. This parameter change reduces the solubility of the blowing agent in the resin member, preventing substance loss and deterioration while maintaining effective foam expansion during production.
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 composite effectively prevents the deterioration of the resin member's outer appearance by using 1-chloro-2,3,3,3-tetrafluoropropropene, which is less soluble and thus minimizes its impact on the resin member.
Implementation Method 1
a resin foam formed by using a blowing agent containing 1-chloro-2,3,3,3-tetrafluoropropene
Implementation Method 2
1-chloro-2,3,3,3-tetrafluoropropene, which is less soluble and thus minimizes its impact on the resin member
Data Source
AI summary
To provide a composite comprising a resin foam and a resin member different from the resin foam, which can suppress deterioration of the outer appearance of the resin member.A composite comprising a resin foam formed by using a blowing agent containing 1-chloro-2,3,3,3-tetrafluoropropene, and a resin member different from the resin foam, containing a resin selected from the group consisting of a polycarbonate resin, a polystyrene resin, a polyphenylene ether resin, an acrylonitrile/butadiene/styrene resin and a styrene/acrylonitrile copolymer resin.