摘要
In this study,steam exploded peanut shell fibers(SE-PSFs)were utilized to fabricate with rigid polyurethane foam(RPUF)in order to improve sound absorption performance and hydrothermal weather resistance.Optimized method of SE treatment,RPUF preparation and flame retardant treatment were selected to prepare SE-PSF/RPUF composites in this experiment.Physical and mechanical properties including density,water absorption capacity,thickness swelling rate,compressive strength,thermal conductivity and average sound absorption coefficient of SE-PSF/RPUF were investigated and compared with the control(PRUF).The results showed that the density,water absorption capacity,thickness swelling rate and thermal conductivity showed an increasing trend with the increase of SE-PSFs content.The strength of the composite material showed a downward trend with the increase of the SE-PSFs content.The average sound absorption coefficient of the SE-PSFs/RPUF compared with PRUF significant increased,and the average sound absorption coefficient of the SE-PSFs/RPUF with SE-PSFs 40%was 0.47.The study getted the best ratio of flame retardants for 10%EG and 3%DMMP.The oxygen index was 35.56 vol%.
基金
from the National Key R&D Program of China(2017YFC0703501)
the National Natural and Science Foundation(Nos.BK20170926 and BK20150878)
the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX18_0962)
the Doctorate Fellowship Foundation of Nanjing Forestry University and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
LERMAB is supported by the French National Research Agency through the Laboratory of Excellence ARBRE(ANR-12-LABXARBRE-01).
