A novel hyperbranched phosphorus-boron polymer for transparent, flame-retardant, smoke-suppressive, robust yet tough epoxy resins

Ye, Guofeng and Huo, Siqi and Wang, Cheng and Shi, Qiu and Yu, Lingfeng and Liu, Zhitian and Fang, Zhengping and Wang, Hao (2021) A novel hyperbranched phosphorus-boron polymer for transparent, flame-retardant, smoke-suppressive, robust yet tough epoxy resins. Composites Part B: Engineering, 227:109395. pp. 1-13. ISSN 1359-8368


Abstract

The fabrication of fire-safe, robust yet tough polymeric materials represents a challenge for both academia and industry. In this work, a novel hyperbranched polymer (TP) based on trihydroxymethylphosphine oxide and phenylboronic acid for epoxy resin is described. The presence of 2 wt% TP afforded epoxy blend with a high limiting oxygen index of 33.2%, a UL-94 V-0 rating, 36.3% and 13.7% reductions in peak heat release rate and total smoke production, making it superior to previously described counterparts. The high efficiency of TP may be mainly attributed to its promotion of carbonization. Notably, an epoxy thermoset is strengthened and toughened due to the introduction of TP. The presence of 4 wt% of this additive increased the tensile strength, elongation at break, impact strength, and flexural strength by 54.0%, 32.8%, 32.0% and 36.9%, respectively. In addition, the high transparency of the epoxy thermoset is maintained in the presence of TP. Thus, this approach offers an integrated design for the preparation of transparent, fire-safe, strong but tough epoxy thermoset via the introduction of a hyperbranched polymer. It may be expected that this technique will find wide application in different industrial fields.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 07 Mar 2022 06:15
Last Modified: 30 Mar 2022 05:17
Uncontrolled Keywords: Epoxy resin; Flame retardancy; Hyperbranched polymer; Mechanical properties; Transparency
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Identification Number or DOI: https://doi.org/10.1016/j.compositesb.2021.109395
URI: http://eprints.usq.edu.au/id/eprint/46459

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