废弃泡沫塑料的疏浚泥固化处理技术的研究

提出采用疏浚泥固化技术治理由废弃泡沫塑料引起的白色污染 ,既可解决疏浚泥及废弃泡沫塑料对环境的污染 ,又可废物利用产生新型土工材料。研究这一方法的技术可行性 ,对其综合性技术经济效益进行了评价。     

废旧塑料综合利用技术的应用

废旧塑料的回收利用是环境污染控制所面临的一个重要课题,近年来,人们在这方面进行了大量的研究工作,取得了很多成果.详细叙述了国内外废旧塑料回收处理的方法,分析了我国在废旧塑料回收利用方面的现状及存在的问题,并对如何进一步开展废旧塑料回收利用工作提出了一系列切实可行的建议.     

Boiling treatment of ABS and PS plastics for flotation separation

A new physical method, namely boiling treatment, was developed to aid flotation separation of acrylonitrile–butadiene–styrene (ABS) and polystyrene (PS) plastics. Boiling treatment was shown to be effective in producing a hydrophilic surface on ABS plastic. Fourier Transform Infrared analysis was conducted to investigate the mechanism of boiling treatment of ABS. Surface rearrangement of polymer may be responsible for surface change of boiling treated ABS, and the selective influence of boiling treatment on the floatability of boiling treated plastics may be attributed to the difference in the molecular mobility of polymer chains. The effects of flotation time, frother concentration and particle size on flotation behavior of simple plastic were investigated. Based on flotation behavior of simple plastic, flotation separation of boiling treatment ABS and PS with different particle sizes was achieved efficiently. The purity of ABS and PS was up to 99.78% and 95.80%, respectively; the recovery of ABS and PS was up to 95.81% and 99.82%, respectively. Boiling treatment promotes the industrial application of plastics flotation and facilitates plastic recycling.     

废塑料生产胶粘剂的研究

讨论了利用废塑料制取胶粘剂的方法，并叙述了该胶粘剂的配方选择、性能试验、主要特点和用途     

废旧塑料催化裂解制备汽油

介绍了由废旧塑料通过热裂解和催化裂解制备汽油的方法,着重介绍了由废旧塑料制得的重油经催化裂解获取汽油的反应装置,催化剂、反应条件,产物分析和可能的反应途径。     

Detection of a Toxic Product Released by a Polyurethane-Containing Film Using a Composting Test Method Based on a Mineral Bed

The degradation of a film containing a 4,4diphenyl methane diisocyanate (MDI) poly(€-caprolactone)-based polyurethane was followed in a test system based on a mineral solid bed designed to facilitate analysis of break-down products released under composting conditions. The use of a mineral solid bed can help extraction and analytical procedures which could be hindered by the heterogeneous nature of compost. The fermentation conditions are typical of the composting environment and generate a powerfully degradative environment. The film fully disintegrated within 30 days of treatment. Analysis on the mineral bed extracts showed that: (i) about 40% of the initial polyurethane was still present in the bed extracts; (ii) this residue was strongly degraded in the poly(€-caprolactone) part, while the urethane part was almost completely recovered (from 80 to 95%, according to the measurement method); (iii) 4,4 diamino diphenyl methane (MDA), a very dangerous product of MDI, was released during biodegradation. The results indicate that a mineral bed can be employed to study degradation and metabolites formation in solid phase fermentation and that the MDI-based polyurethanes are not susceptible of a full degradation during composting and maintain the potential of a slow release of MDA into the environment after soil application.     

废旧塑料综合利用新方法——高炉喷吹废塑料技术

介绍了废旧塑料综合利用的新方法－高炉喷吹废料技术。通过比较，表明高喷吹废塑料技术在各方面均优于废旧塑料的其他处理方法；并简要对我国高炉喷吹废塑料作了可行性论证。     

废旧聚苯乙烯塑料的处理和利用

叙述了国内外废旧塑料处理和利用技术的发展现状 ,指出今后技术的发展方向应侧重于废旧塑料的收集和分离技术的研究开发 ,降低回收利用成本。     

废塑料资源化新技术及其进展

随着社会的发展 ,人们对物质的要求日益增大 ,而自然资源和能源却日趋匮乏 ;另一方面 ,可再生利用的高分子材料的消耗所产生的废弃物也造成了严重的污染 ,威胁到人类的生存。有人提出废旧塑料的资源化是 2 1世纪全人类的重要课题。本文综述了国内外废旧塑料资源化新技术及其进展。     

浅谈白色污染的危害和防治

在分析白色污染来源和环境危害的基础上,提出了防治白色污染的措施和方案,认为白色污染治理是一个系统工程,涉及到技术、经济、法律等多方面。