Preparation and characterization of tung oil-based flame retardant polyols

doi:10.1016/j.cjche.2018.03.011

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (12): 2664-2671.DOI: 10.1016/j.cjche.2018.03.011

• Materials and Product Engineering • 上一篇下一篇

Preparation and characterization of tung oil-based flame retardant polyols

Wei Zhou^1,2,3,4, Puyou Jia^1,2,3,4, Yonghong Zhou^1,2,3,4, Meng Zhang^1,2,3,4

1 Institute of Chemical Industry of Forestry Products, CAF, Nanjing 210042, China;
2 National Engineering Lab for Biomass Chemical Utilization, Nanjing 210042, China;
3 Key Lab of Forest Chemical Engineering, SFA, Nanjing 210042, China;
4 Key Lab of Biomass Energy and Material, Nanjing 210042, China

收稿日期:2017-11-24 修回日期:2018-03-13 出版日期:2018-12-28 发布日期:2019-01-09
通讯作者: Meng Zhang
基金资助:
Supported by the National Natural Science Foundation of China (31670577, 31670578, 31570563).

Preparation and characterization of tung oil-based flame retardant polyols

Wei Zhou^1,2,3,4, Puyou Jia^1,2,3,4, Yonghong Zhou^1,2,3,4, Meng Zhang^1,2,3,4

1 Institute of Chemical Industry of Forestry Products, CAF, Nanjing 210042, China;
2 National Engineering Lab for Biomass Chemical Utilization, Nanjing 210042, China;
3 Key Lab of Forest Chemical Engineering, SFA, Nanjing 210042, China;
4 Key Lab of Biomass Energy and Material, Nanjing 210042, China

Received:2017-11-24 Revised:2018-03-13 Online:2018-12-28 Published:2019-01-09
Contact: Meng Zhang
Supported by:
Supported by the National Natural Science Foundation of China (31670577, 31670578, 31570563).

摘要/Abstract

摘要： Three kinds of tung oil-based structural flame retardants polyols (TOFPs) were prepared by new methods in this paper. First, tung oil was used to produce monoglyceride and diglyceride by transesterification with glycerol by sodium methoxide. The products after transesterification were epoxidized by peracetic acid which was in-situ generated from acetic acid and hydrogen peroxide in the presence of sulfuric acid catalyst. And then, TOFPs were prepared from epoxidized alcoholysis tung oil (EGTO) with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), diethyl phosphate (DEP) and diethanolamine (DEA) by ring-opening reactions, respectively. GPC was used to evaluate the conversion rate, at optimum reaction conditions, selectivity for monoglyceride in transesterification. The influence of different parameters such as temperature, mole ratio or mass ratio on the conversion rate of transesterification and epoxidation were investigated. The molecular structures of TOFPs were characterized by FTIR and ¹HNMR. Finally, tung oil-based polyurethane foams (TOPUFs) were prepared by a one-shot process using TOFPs with polyisocyanate. The LOI values of TOPUFs whose content of DOPO-EGTO, DEP-EGTO and DEA-EGTO were 100 wt% can reach to 26.2%, 25.1%, and 24.4%, respectively.

关键词: Tung oil, Transesterification, Epoxidation, Flame retardant polyols

Abstract: Three kinds of tung oil-based structural flame retardants polyols (TOFPs) were prepared by new methods in this paper. First, tung oil was used to produce monoglyceride and diglyceride by transesterification with glycerol by sodium methoxide. The products after transesterification were epoxidized by peracetic acid which was in-situ generated from acetic acid and hydrogen peroxide in the presence of sulfuric acid catalyst. And then, TOFPs were prepared from epoxidized alcoholysis tung oil (EGTO) with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), diethyl phosphate (DEP) and diethanolamine (DEA) by ring-opening reactions, respectively. GPC was used to evaluate the conversion rate, at optimum reaction conditions, selectivity for monoglyceride in transesterification. The influence of different parameters such as temperature, mole ratio or mass ratio on the conversion rate of transesterification and epoxidation were investigated. The molecular structures of TOFPs were characterized by FTIR and ¹HNMR. Finally, tung oil-based polyurethane foams (TOPUFs) were prepared by a one-shot process using TOFPs with polyisocyanate. The LOI values of TOPUFs whose content of DOPO-EGTO, DEP-EGTO and DEA-EGTO were 100 wt% can reach to 26.2%, 25.1%, and 24.4%, respectively.

Key words: Tung oil, Transesterification, Epoxidation, Flame retardant polyols

Wei Zhou, Puyou Jia, Yonghong Zhou, Meng Zhang. Preparation and characterization of tung oil-based flame retardant polyols[J]. Chinese Journal of Chemical Engineering, 2018, 26(12): 2664-2671.

Wei Zhou, Puyou Jia, Yonghong Zhou, Meng Zhang. Preparation and characterization of tung oil-based flame retardant polyols[J]. Chin.J.Chem.Eng., 2018, 26(12): 2664-2671.

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Preparation and characterization of tung oil-based flame retardant polyols

Preparation and characterization of tung oil-based flame retardant polyols

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