Bio-based Polymer Composition for Wearable Device Durability
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Solution Overview
Problem
There is a need for materials that maintain hardness while ensuring formability and environmental friendliness in the development of slimmer, multifunctional electronic devices, particularly in wearable devices, which require improved durability and comfort without causing skin issues.
Innovation Solution
A polymer composition is developed by blending thermoplastic resin, such as thermoplastic polyurethane, with eco-friendly resins like PA11 derived from castor beans and corn-derived resins, and silicone resin, which are processed using extrusion and injection molding to create a durable and comfortable material for electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional thermoplastic resins are used to maintain hardness in slimmer products, then mechanical strength is improved, but environmental friendliness deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the thermoplastic resin by incorporating bio-based components (castor bean oil, corn-derived ingredients) to replace conventional petroleum-based materials, thereby improving environmental friendliness while maintaining mechanical hardness through optimized molecular structure and blending ratios
Solution Approach 2:
The patent creates a composite material system combining thermoplastic resin with specific additives including silane-modified polyethylene wax and hydroxyl-terminated polybutadiene in controlled proportions, forming a multi-component composition that achieves both environmental sustainability and mechanical performance
2Ease of operation
If elastomeric materials are used in wearable devices for skin contact, then wearing comfort is improved, but durability deteriorates
Solution Approach 1:
The patent develops a composite elastomeric material combining thermoplastic resin with hydroxyl-terminated polybutadiene (10-30 parts by weight) and silane-modified polyethylene wax (5-20 parts by weight), creating a multi-phase structure that provides both the softness needed for skin comfort and the mechanical strength required for durability in wearable applications
3Ease of operation
If more silicone resin is added to improve tactile properties, then wearing comfort is improved, but manufacturing complexity increases
Solution Approach 1:
The patent optimizes the silicone resin content parameter within a specific range (1-60 parts by weight based on total composition) and combines it with silane-modified polyethylene wax to achieve desired tactile properties while maintaining processability and avoiding excessive manufacturing complexity through balanced formulation
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 polymer composition achieves high tensile strength, improved wear resistance, and enhanced tactile properties, ensuring both mechanical durability and user comfort while being environmentally friendly, reducing the risk of skin irritation and aligning with eco-friendly policies.
Implementation Method 1
mixing 30 to 70 parts by weight of a thermoplastic resin, 1 to 50 parts by weight of an eco-friendly resin, and 1 to 60 parts by weight of a silicone resin
Implementation Method 2
introducing the mixed polymer composition into a hopper of an extruder to produce the polymer composition in pellet form
Implementation Method 3
introducing the pellet into an injection molding device for injection molding
Data Source
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AI summary
The present disclosure relates to a polymer composition including eco-friendly materials, an electronic device and a method of manufacturing the same. The polymer composition according to an aspect of the present disclosure includes a thermoplastic resin at 30 to 70 parts by weight; an eco-friendly resin, including a bio-resin, at 1 to 50 parts by weight; and a silicone resin at 1 to 60 parts by weight based on the total weight of the polymer composition.