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Molecular Simulation and Experimental Study on Thermodynamic Properties of DGEBA/OSC Blending Modified Epoxy Resin
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Jingyuan GE, Kexin FU, Jun XIE, Xinyu YANG, Qing XIE
Insulating Materials | 2021, 54(3) : 42 - 48
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Insulating Materials | 2021, 54(3): 42-48
• Material Research •
Molecular Simulation and Experimental Study on Thermodynamic Properties of DGEBA/OSC Blending Modified Epoxy Resin
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Jingyuan GE, Kexin FU, Jun XIE, Xinyu YANG, Qing XIE
Affiliations
  • State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
Published: 2021-02-20 doi: 10.16790/j.cnki.1009-9239.im.2021.03.007
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DGEBA/OSC cross-linked epoxy resin blend systems with different proportions were constructed by molecular dynamics (MD) simulation using methyl tetrahydrophthalic anhydride (MTHPA) as curing agent, and the blend system samples were prepared. The thermodynamic properties of the blending systems were studied by simulation and experiment. The simulation and test results show that with the increase of the OSC proportion, the glass transition temperature (Tg) of the blend systems increases, when the molar ratio of DGEBA to OSC is 6∶4, the Tg increases by 30.7 K. The elastic modulus and strength of the systems increase at first and then decrease, and reach the optimum at 8∶2 of molar ratio. The addition of OSC can reduce the fractional free volume (FFV) and mean square displacement (MSD) of the systems, and weak the molecular segment movement ability. The calculation results of synergy rotational energy barrier and cohesive energy density (CED) show that the blend system with stronger molecular segment rigidity and larger interaction force between segments has better thermodynamic properties.

epoxy resin  /  blending modification  /  thermodynamic properties  /  molecular dynamics
Jingyuan GE, Kexin FU, Jun XIE, Xinyu YANG, Qing XIE. Molecular Simulation and Experimental Study on Thermodynamic Properties of DGEBA/OSC Blending Modified Epoxy Resin[J]. Insulating Materials, 2021 , 54 (3) : 42 -48 . DOI: 10.16790/j.cnki.1009-9239.im.2021.03.007
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.03.007
  • Receive Date：2020-04-28
  • Online Date：2026-01-26
  • Published：2021-02-20
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  • Received：2020-04-28
  • Revised：2020-06-12
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    State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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