摘要
根据镜质组煤微组分在中、低角区0.2nm^(-1)≤S≤4nm^(-1)(s=2sinθ/λ)的x射线散射强度分布,研究了煤大分子的堆垛结构.建立了由煤大分子弯曲层局部平行堆垛形成的3维结构单位。当镜质组煤微组分的Wc=84％～92％时,这种3维结构单位呈“似流体”分布。在Wc≈89％时这种“似流体”结构最为突出。
On the basis of the distribution of x-ray scattering intensities from vistrinite coal samples in the region from low angle to midedle angle(s=0. 2~4nm-1 (s= 2sinθ/λ) ,The stacking structure of coal macromolecules is studied. The 3-dimensional sturctural unit, which is made of the locally parallel stacking of coal macromolecular buckling sheets, is established. This structural unit distributes in a liquid-like way when the carben content of coal is 84%~92% .and this liquid-like structure is the most conspicuous when it is about 89%.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
1992年第3期56-61,共6页
Journal of Chongqing University
基金
国家自然科学基金
关键词
煤
分子结构
分子排布
X射线衍射
coal
molecular structure
molecular arrangement
x-ray diffraction
