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FOREST RESOURCES WANAGEMENT ›› 2022›› Issue (4): 72-79.doi: 10.13466/j.cnki.lyzygl.2022.04.010

• Scientific Research • Previous Articles     Next Articles

Comparative Study on Physical and Chemical Properties and Flame Retardancy of Two Berberis Species

LIU Weiping1(), JI Wei2, ZHANG Jun1()   

  1. 1. Hebei Key Laboratory for Tree Genetic Resources and Forest Protection,Forestry College,Hebei Agricultural University,Baoding,Hebei 071000,China
    2. Shijiazhuang Gaocheng District Lvdu Municipal Gardening Engineering Co.Ltd.,Shijiazhuang 052160,China
  • Received:2022-05-09 Revised:2022-07-16 Online:2022-08-28 Published:2022-10-13
  • Contact: ZHANG Jun E-mail:1757316268@qq.com;zhangjunem@126.com

Abstract:

This paper aimed to compare the flame retardant properties of two Berberis species in Gaocheng District of Shijiazhuang City,Hebei Province,and provide theoretical basis for the selection of fire-resistant forest belts of Berberis in garden cities.We examined tree combustibility using big and small branches of new species Berberis thunbergii'Bingchuanhongye' and common garden greening Berberis thunbergii 'Atropurpurea'during fire prevention period (mid-February),used principal component analyses in SPSS 18.0 and Origin 2019 software to analyze the seven physical and chemical properties including moisture content,benzene-alcohol extract content,lignin,polysaccharide,crude ash,ignition point,high and lower caloric values that affected combustibility of trees.Thermogravimetric analysis instruments were used to obtain TG-DTG curve and calculate the pyrolysis kinetics equation to obtain the activation energy (E)and pre-exponential factor (A)in large and small branches among two Berberis species.The pyrolysis characteristics and kinetics parameters were studied,and combustibility of two Berberis species was assessed comprehensively.In general,B.thunbergii'Bingchuanhongye' was more flame retardant than B.thunbergii'Atropurpurea',big branches were more flame retardant than small branches.These results provided an important data for the flame retardancy of two Berberis species.

Key words: Berberis thunbergii'Bingchuanhongye', Berberis thunbergii 'Atropurpurea', flame resistance, thermogravimetric analysis, principal component analysis

CLC Number: