Manufacturing and process optimization of porous rice straw board
Development and utilization of straw resources and the production of straw board can dramatically reduce straw waste and environmental pollution associated with straw burning in China.However,the straw board production faces several challenges,such as improving the physical and mechanical properties,as well as eliminating its formaldehyde content.The recent research was to develop a new straw board compound adhesive containing both inorganic(MgSO4,MgCO3,active silicon and ALSiO4)and organic(bean gum and modified Methyl DiphenylDiisocyanate,MDI)gelling materials,to devise a new high frequency straw board hot pressing technique and to optimize the straw board production parameters.The results indicated that the key hot pressing parameters leading to porous straw board with optimal physical and mechanical properties.These parameters are as follows: an adhesive containing a 4:1 ratio of inorganic-to-organic gelled material,the percentage of adhesive in the total mass of preload straw materials is 40%,a hot-pressing temperature in the range of 120 ℃ to 140 ℃,and a high frequency hot pressing for 10 times at a pressure of 30 MPa.Finally,the present work demonstrated that porous straw board fabricated under optimal manufacturing condition is an environmentally friendly and renewable materials,thereby meeting national standard of medium density fiberboard(MDF)with potential applications in the building industry.
Dejun Liu Bing Dong Xuewei Bai Wei Gao Yuanjuan Gong
Shenyang Agricultural University,Engineering College,Shenyang,110866,China Shenyang Huachuang Industrial Technology Co.,LTD,110020,China
国际会议
上海
英文
1-9
2017-12-28（万方平台首次上网日期，不代表论文的发表时间）