摘要
生命周期评价法(LCA)是指用数学物理方法结合实验分析对某一过程、产品或事件的资源、能源消耗,以及废物排放、环境吸收和消化能力等环境负担性能进行评价,以定量确定该过程、产品或事件的环境合理性及环境负荷量大小的一种新型研究方法。输入/输出法是LCA中的一种重要方法,本研究利用该方法对炭/炭(C/C)复合材料两种制备工艺(等温和热梯度化学气相渗透)中的资源、能源消耗以及污染物排放进行了定量评估。结果表明,与热梯度工艺相比,等温化学气相渗透法消耗了更多的资源、能源,给环境造成了严重的负荷,等温化学气相渗透法需改进,热梯度化学气相渗透工艺有广阔的应用前景。
Life Cycle Assessment (LCA) that combines the mathematical and physical methods with experimental analysis has become a new approach for evaluating the environmental rationality, burdens, and ability of environmental assimilation as well as digestion associated with a process, product, or activity by identifying and quantifying energy and materials consumed and wastes released to the environment, in which the input/output methodology is an important analytical method. In this paper, two kinds of processes that has been widely used for making C/C composites, i. e. the isothermal technique and the thermal gradient chemical vapor infiltration technique are compared in terms of the energy and materials consumed and the wastes released to the environment The results show that in comparison to the thermal gradient process, the isothermal process consumes much more energy and materials, resulting to serious load to the environment The isothermal process should be further improved, while the thermal gradient process has more bright future and application potential
出处
《炭素技术》
CAS
CSCD
2003年第5期22-26,共5页
Carbon Techniques
关键词
生命周期评价
炭/炭复合材料
等温化学气相渗透法
热梯度化学气相渗透法
Life Cycle Assessment
carbon/carbon composites
isothermal chemical vapor infiltration
thermal gradient chem- ical vapor infiltration
