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Reinforced Epoxy Binder Modified with Borpolymer
Aleksei G Tuisov1, Aisen Kychkin1, Anatoly K Kychkin2
1Federal Research Center, The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences, Yakutsk 677000, Russia.
Polymers
|June 28, 2023
Summary
This study details the dissolution of a novel borpolymer additive in epoxy binders, enhancing composite material properties. The additive significantly improves strength and elasticity, making epoxy binders more suitable for advanced composite applications.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Epoxy resins are vital in composite industries due to excellent thermal, chemical, and aging resistance.
- Modification of epoxy binders is crucial for developing advanced composite materials with tailored properties.
Purpose of the Study:
- To investigate the dissolution of polymethylene-p-triphenyl ether of boric acid in epoxy-anhydride binders.
- To evaluate the impact of this borpolymer additive on the mechanical properties and structure of the binder.
Main Methods:
- Determining optimal temperature and time for dissolving the borpolymer additive in isomethyltetrahydrophthalic anhydride (iso-MTHPA).
- Analyzing the mechanical properties (transverse bending, elastic modulus, tensile, and impact strength) of the modified epoxy binder.
Main Results:
- Complete dissolution of the borpolymer additive in iso-MTHPA achieved at 55 ± 2 °C over 20 hours.
- Significant improvements in mechanical properties observed at 0.50 mass.% additive concentration: transverse bending strength up to 190 MPa, elastic modulus up to 3200 MPa, tensile strength up to 0.8 MPa, and Charpy impact strength up to 5.1 kJ/m².
Conclusions:
- Polymethylene-p-triphenyl ether of boric acid effectively modifies epoxy-anhydride binders.
- The additive enhances key mechanical properties, expanding potential applications in fibrous composite materials.
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