A study on preparation of modified Graphene Oxide and flame retardancy of polystyrene composite microspheres

Yazhen Wang; Yingbo Qing; Yu Sun; Meng Zhu; Shaobo Dong

doi:10.1080/15685551.2020.1720934

A study on preparation of modified Graphene Oxide and flame retardancy of polystyrene composite microspheres

Des Monomers Polym. 2020 Jan 28;23(1):1-15. doi: 10.1080/15685551.2020.1720934. eCollection 2020.

Authors

Yazhen Wang^{1

2

3

4}, Yingbo Qing^{1

3}, Yu Sun^{1

3}, Meng Zhu^{3

4}, Shaobo Dong^{3

4}

Affiliations

¹ College of Chemical and Chemical Engineering, Qiqihar University, Qiqihar, China.
² College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, Heilongjiang, China.
³ Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiqihar, China.
⁴ College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.

Abstract

In this paper, the ODOPM, a kind of 9, 10-dihydro-9-oxygen-heterooxy-10-phosphoro-10-oxygen (DOPO) derivative, was obtained by hydroxylation of DOPO. Further, a phosphorus nano-flame retardant (GO-ODOPM) was obtained by addition reaction with carboxylated Graphite Oxide (GO-COOH). And then Graphene Oxide/polystyrene (GO-ODOPM/PS) composite microspheres were obtained via suspension polymerization of styrene with GO-ODOPM. The decrease of the peak heat release rate (HRR) and total heat release rate (THR) for the GO-ODOPM/PS composite microspheres was obtained when the content of the additives was only 3.0 wt% is more than 36.2% and 33.6% compared with the pure PS microspheres, respectively. Thermogravimetric (TG), dynamic rheology and carbon residue analysis were used to study the flame-retardant mechanism of GO-ODOPM in PS microspheres. The results revealed that the addition of GO-ODOPM obviously reduced the fire hazard of polystyrene (PS) microspheres. Thus, this work provided a feasible method to design efficient flame retardants for enhancing fire safety of polymers.

Keywords: DOPO; Graphene Oxide; flame retardant; polystyrene; suspension polymerization.

Grants and funding

This work was supported by the National Natural Scientific Foundation of China (No:21376127), the Fundamental Research Funds in Heilongjiang Provincial Universities (Plant food processing technology specialty subject project No:YSTSXK201860), the Fundamental Research Project in Heilongjiang Provincial Education Department (Key projects of science and engineering No:135209102), the Fundamental Research Funds in Heilongjiang Provincial Universities (No:135309110), the Qiqihar City Science and Technology Bureau Project (GYGY-201601) and the Graduate Innovation Research Project of Qiqihar University (YJSCX2018-ZD19).