【作者】 吕艳娜； 何北海； 欧建志；

【Author】 LV Yanna~(1,2),HE Beihai~(1,3),OU Jianzhi~2 and WU Yali~2 1 State Key Lab of Pulp and Paper Engineering,South China University of Technology, Guangzhou,China;2 Department of Media and Communication,Guangdong Industry Technical College,Guangzhou,China;3 National Engineering Research Center of Papermaking & Pollution Control,South China University of Technology,Guangzhou,China

【机构】 华南理工大学制浆造纸工程国家重点实验室； 广东轻工职业技术学院； 华南理工大学制浆造纸与污染控制国家工程研究中心；

【摘要】 研究以蔗髓为原料,亚硫酸氢镁法制浆废液为胶黏剂,并向其中添加白炭黑制备新型缓冲包装材料。文中分析了沉淀法白炭黑的用量和比表面积对缓冲包装材料的密度、吸湿性和静态压缩强度的影响,同时采用扫描电镜对不同表面特性白炭黑补强材料的形貌进行表征。结果表明,加入质量百分比用量0.5%的白炭黑即可显著提高缓冲包装材料的静态压缩强度,随白炭黑添加量的增加,包装材料的密度增加,吸湿性呈先增大后减小趋势;随白炭黑比表面积增加,包装材料的压缩强度增大;对比发现,沉淀法白炭黑的力学补强效果优于气相法白炭黑。该材料可自然降解,具有显著的经济效益和社会效益。更多还原

【Abstract】 New degradable cushioning packaging materials based on bagasse pith,magnesium bisulfite spent liquor and reinforcing silica were prepared by press-molding process.The effects of of precipitated silica loading and the specific surface area(SBET) on the apparent density and the static compressive strength of cushioning packaging materials were investigated.Meanwhile,the microstructure and morphology of different types of silica fillers were analyzed by scanning electron microscopy(SEM).Static compressive strength of BPCPMs was improved significantly with the addition of 0.5%(w/w) silica.However,the compressive stress of BPCPMs increased at first and then decreased with increasing loading of silica.Increasing silica dosage increased cushion efficiency of BPCPMs at higher stress levels.The compressive stress increased with increasing SBET value,and under high strain conditions,the increase scale in compressive stress also improved.更多还原