| 90 | 0 | 1 |
| 下载次数 | 被引频次 | 阅读次数 |
以膦腈环核腰果酚环氧树脂(EHCPP)为单体制备均聚固化物,借助差示扫描量热分析仪研究其固化行为。计算出固化反应动力学参数:表观活化能Ea=85.452 kJ/mol,表观频率因子A=1.86×1011 min-1,反应级数n=0.94;并得到固化反应动力学模型:d_α/dt=1.856×1011·e-10278/T.(1-α)0.94。研究结果表明:环氧树脂单体均聚物在850℃时,残碳率为14.4%,理论极限氧指数为23.3;膦腈的引入显著提高了材料的热稳定性,材料从易燃级别提升为可燃级别,具有较低的模量和玻璃化转变温度(6.9℃)。
Abstract：The homopolymer was prepared by using cardanol-based epoxy resin containing cyclotriphosphazene core(EHCPP) as the monomer.The curing behavior was studied by differential scanning calorimetry.The kinetic parameters of curing reaction were calculated:apparent activation energy Ea=85.452 kJ/mol,apparent frequency factor A=1.86×1011 min-1,reaction order n=0.94.The kinetic model of curing reaction was obtained:d_α/dt=1.856×1011·e-10278/T·(1-α)0.94.The research results showed that when the homopolymer of epoxy resin monomer was at850℃,the carbon residue rate was 14.4%,and the theoretical limit oxygen index was 23.3.The introduction of phosphazene significantly improved the thermal stability of the material,and the material was upgraded from flammability level to combustibility level,which had lower modulus and glass transition temperature(6.9℃).
[1] PARK S J,JIN F L,LEE J R,et al.Synthesis and thermal properties of epoxidized vegetable oil[J]. Macromolecular Rapid Communications,2010,25(6):724-727.
[2] LIU Z,ERHAN S Z. Ring-opening polymerization of epoxidized soybean oil[J]. Journal of the American Oil Chemists Society,2010,87(4):437-444.
[3] LLIGADAS G,RONDA J C,GALIA M,et al.Development of novel phosphorus-containing epoxy resins from renewable resources[J].Journal of Polymer Science Part A:Polymer Chemistry,2006,44(23):6717-6727.
[4] STEMMELEN M,PESSEL F,LAPINTE V,et al. A fully biobasedepoxyresinfrom vegetableoils:From the synthesis of the precursors by thiol-ene reaction to the study of the final material[J]. Journal of Polymer Science Part A:Polymer Chemistry,2011,49(11):2434-2444.
[5] ROUDSARI G M,MOHANTY A K,MISRA M.Study of the curing kinetics of epoxy resins with biobased hardener and epoxidized soybean oil[J]. ACS Sustainable Chemistry&Engineering,2014,2(9):2111-2116.
[6] KOIKE T.Progress in development of epoxy resin systems based on wood biomass in Japan[J].Polymer Engineering&Science,2012,52(4):701-717.
[7] JIN F L,PARK S J.Thermal properties of epoxy resin/filler hybrid composites[J].Polymer Degradation and Stability,2012,97(11):2148-2153.
[8] MA S,LIU X,JIANG Y,et al.Bio-based epoxy resin from itaconic acid and its thermosets cured with anhydride and comonomers[J].Green Chemistry,2013,15(1):245-254.
[9]李俊杰.基于环三磷腈的枝化腰果酚环氧树脂的制备及交联聚合物性能[D].武汉：华中科技大学，2017.
[10] HUANG Y Q,WONG C K C,ZHENG J,et al.Bisphenol A(BPA)in China:A review of sources,environmental levels,and potential human health impacts[J].Environment International,2012,42(1):91-99.
[11] KISHI H,AKAMATSU Y,NOGUCHI M,et al.Synthesis of epoxy resins from alcohol-liquefied wood and the mechanical properties of the cured resins[J].Journal of Applied Polymer Science,2011,120(2):745-751.
[12] JAILLET F,DARROMAN E,RATSIMIHETY A,et al.New biobased epoxy materialsfrom cardanol[J].European Journal of Lipid Science and Technology,2014,116(1):63-73.
[13] LI P,MA S,DAI J,et al.Itaconic acid as a green alternative to acrylic acid for producing a soybean oil-based thermoset:Synthesis and properties[J].ACS Sustainable Chemistry&Engineering,2017,5(1):1228-1236.
[14] LI J J,SUN J,XIE Y X,et al. A novel star-shaped,cardanol-based bio-prepolymer:Synthesis,UV curing characteristics and properties of cured films[J]. Polymer Degradation and Stability,2018,158:124-135.
[15]李晓丹，王维，郭淑齐，等.耐高温树脂的固化动力学分析及其力学性能[J].纤维复合材料，2009,26(4):24-26;31.
[16]周刚.含羧基硅氧烷的合成及其固化特性研究[D].南京：南京大学，2011.
[17]张明，安学锋，唐邦铭.高性能双组份环氧树脂固化动力学研究和TTT图绘制[J].复合材料学报，2006,23(1):17-25.
[18] MAAZOUZ A,TEXIER C,TAHA M,et al. Chemorheological study of a dicyanate ester for the simulation of the resin-transfer molding process[J].Composites Science and Technology,1998,58(5):627-632.
基本信息:
DOI：10.13416/j.ca.2020.02.006
中图分类号:TQ323.5
引用信息:
[1]李俊杰.膦腈环核腰果酚环氧树脂均聚固化行为及性能研究[J].中国胶粘剂,2020,29(02):22-25+30.DOI:10.13416/j.ca.2020.02.006.
基金信息: