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Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (2): 53-58.doi: 10.3969/j.issn.0253-2417.2019.02.008

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Preparation and Characterization of Nitrogen-containing Heterocyclic Tung Oil-based Rigid Polyurethane Foam

Wei ZHOU1,2,Puyou JIA1,2,Meng ZHANG1,2,Yonghong ZHOU1,2,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
  • Received:2018-12-06 Online:2019-04-25 Published:2019-05-08
  • Contact: Yonghong ZHOU E-mail:yhzhou777@163.com
  • Supported by:


Nitrogen-containing heterocyclic tung oil-based polyol (PTOT) was synthesized by the ring opening reaction between epoxidized eleostearic acid monoglyceride (EGTO) and 1, 3, 5-tris(2-hydroxyethyl) isocyanurate (THEIC). PTOT was used to substitute part of phthalic anhydride polyester polyol (PAPP) to prepare rigid polyurethane foam(RPUF). FT-IR, 1H NMR, TG and universal testing machine were employed to characterize the chemical structure and the properties of the products. It can conclude that PTOT was obtained by the ring opening reaction, and the hydroxyl value and viscosity (25 ℃), acid value and moisture of PTOT were 378.42 mg/g and 1.84 Pa·s, respectively. The acid value was lower than 0.8 mg/g and the moisture was lower than 0.1%.With the increase of PTOT substitution amount, the limiting oxygen index (LOI) of the RPUF was increased while the compressive strength and thermal stability were decreased. When the amount of PTOT increased from 0 to 100%, the LOI increased from 19.7% to 23.0%, the compression strength decreased from 0.85 MPa to 0.59 MPa and the initial degradation temperature decreased from 276.0 ℃ to 273.5 ℃, respectively. The introduction of an appropriate amount of cellulose into RPUF could enhance the mechanical strength and retain its flame retardancy and thermal stability without lowering.

Key words: tung oil, 1, 3, 5-tris(2-hydroxyethyl) isocyanurate, rigid polyurethane foam, flame retardant, cellulose

CLC Number: