Preparation, characterization, and properties of silanized graphene oxide reinforced biobased benzoxazine-bismaleimide resin composites

Abstract

Silanized graphene oxide (SiGO) was synthesized and characterized using KH570 as a modifier on graphene oxide (GO). Subsequently, high performance silanized graphene oxide/cardanol based benzoxazine (C-fa)-bismaleimide (BMI) resin composites (SiGO/C-fa/BMI) were prepared by blending and step thermal curing. The reaction and dispersion of SiGO in C-fa/BMI matrix were studied by FTIR and XRD. The effects of SiGO on the thermal and mechanical properties of the SiGO/C-fa/BMI composites were investigated. The results shown that SiGO has good dispersity in CFa-BMI matrix. The thermal decomposition temperature and char yield of SiGO/C-fa/BMI composites was improved markedly. Comparing with that of neat C-fa/BMI resin, the young's modulus and tensile strength of SiGO0.5/C-fa/BMI composite increased by 110.8% and 142.0%. The water absorption of SiGO/C-fa/BMI composites also decreased significantly. The great improvement in thermal and mechanical properties of SiGO/C-fa/BMI composites make them as a potential alternative high performance resin composite candidate in aerospace and electronic area.

Keywords:

• Biobased
• benzoxazine
• bismaleimide
• silanized graphene oxide

Disclosure statement

No potential conflict interest was reported by the authors.

Additional information

Funding

The project sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Opening Foundation of Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation [2017109], the science research project of Hubei Provincial Science & Technology Department [2018CFB778], China.