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Hardness Modulated Thermoplastic Poly(ether Ester) Elastomers for the Automobile Weather-strip Application
Su Hyeon Jeon1, Jae Eon Jeong1, Seongkyun Kim1
1School of Chemical Engineering, Pusan National University, Busandaehag-ro 63-2, Busan 46241, Korea.
Polymers
|February 13, 2021
Summary
New poly(ether ester) elastomers offer tunable properties for automotive seals, replacing traditional rubber. Modifying chain extenders adjusts hardness and material behavior for improved performance.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Conventional ethylene propylene diene monomer rubber/polypropylene vulcanizates are widely used for automotive weather-stripping and seals.
- Developing advanced materials with tunable properties is crucial for enhancing automotive component performance and longevity.
Purpose of the Study:
- To synthesize novel poly(ether ester) elastomers as potential replacements for conventional rubber materials in automotive applications.
- To investigate the influence of chain extender composition on the properties of the synthesized poly(ether ester) elastomers.
- To explore the tunability of material characteristics such as hardness, crystallinity, and phase separation.
Main Methods:
- Synthesis of a series of poly(ether ester) elastomers with varying hard and soft segment ratios.
- Modulation of elastomer hardness by controlling the composition of chain extenders, including 1,4-butandiol and a soybean oil-originated fatty acid amide diol.
- Analysis of the resulting elastomers' crystallinity and phase separation behavior.
Main Results:
- Successful synthesis of poly(ether ester) elastomers with tunable hardness achieved by adjusting chain extender composition.
- Demonstrated ability to modulate crystallinity and phase separation by altering chain extender composition and hard to soft segment ratios.
- Identified a novel soybean oil-based chain extender for property modification.
Conclusions:
- Poly(ether ester) elastomers present a viable alternative to conventional rubber for automotive weather-stripping and seals.
- Chain extender composition is a key factor in tailoring the mechanical and morphological properties of these elastomers.
- The developed materials offer a pathway to customized solutions for automotive sealing applications.
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