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涂料行业废气污染物属于复杂未知体系,常规方法难以进行全面准确的定性定量分析。采用GC/MS法测定涂料行业废气化学成分,利用化学计量学解析法(CRM)对谱图中的色谱峰进行逐一解析,得到各组分的纯色谱曲线和质谱,通过质谱库匹配进行定性,用解析色谱曲线积分法进行定量。从20个色谱峰中解析出了47个组分,鉴定了其中39个化合物,占总含量的90.86%。涂料废气污染物的主要化学成分为苯系物,占总含量的47.88%。该法能对重叠峰进行解析,降低对色谱注的要求,为快速、准确解析复杂未知样本提供了崭新途径。 相似文献
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对聚氨酯涂层固体颗粒弹性冲击、塑性冲击及弹塑性冲击的冲蚀过程进行了综述和分析,分别从内部因素和外部因素讨论了影响聚氨酯涂层固体颗粒冲蚀性能的因素,并对现有的固体颗粒冲蚀设备、试验方法及标准进行了归纳总结,最后指出了聚氨酯涂层固体颗粒冲蚀研究中的问题并展望了未来发展方向。 相似文献
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研究了5种无机抗菌剂:锌型沸石抗菌剂、银型沸石抗菌剂、氧化锌晶须复合抗菌剂、纳米TiO2光催化抗菌剂和Ca10-x-yTixZny(PO4)6(OH)2复合抗菌剂在涂料中的应用。以对大肠杆菌(E.coli)的灭菌效果评价抗菌性能。结果表明:锌型抗菌涂料的抗菌效果较差,后4种类型抗菌涂料具有很好抗菌效果。但是,银型抗菌剂和氧化锌晶须复合抗菌剂在涂料中存在易引起涂料变色和难分散问题;纳米TiO2光催化型抗菌剂在涂料中易加快涂料老化;而Ca10-x-yTixZny(PO4)6(OH)2复合抗菌剂既具有良好的抗菌性能,又对涂料的基本性能没有影响,它能够应用到抗菌涂料中。 相似文献
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概述了紫外光固化涂料在汽车塑料部件、修补漆、面漆上的应用,并展望了紫外光固化涂料在汽车涂装上的发展趋势. 相似文献
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The dynamics of Cd scavenging from solutions by Fe/Mn oxides in natural surface coatings (NSCs) was investigated under laboratory conditions. Selective extraction methods were employed to estimate the contributions of Fe/Mn oxides, where hydroxylamine hydrochloride (0.01 mol/L NH2OH-HCl + 0.01 mol/L HNO3), sodium dithionite (0.4 mol/L Na2S2O4) and nitric acid (10% HNO3) were used as extraction reagents. The Cd scavenging was accomplished with developing periods of the NSCs (totally 21 data sets). The resulting process dynamics fitted well to the Elovich equation, demonstrating that the amount of Cd scavenged was proportional to the increments of Fe/Mn oxides that were accumulated in the NSCs. The amount of Cd bound to Fe oxides (MCdFe) and Mn oxides (MCdMn) could be quantified by solving two equations based on the properties of two extraction reagents. The amount of Cd scavenged by Fe/Mn oxides could also be estimated using MCdFe and MCdMn divided by the total amounts of Fe and Mn oxides in the NSCs, respectively. The results indicated that the Cd scavenging by Fe/Mn oxides was dominated by Fe oxides, with less roles attributed to Mn oxides. The estimated levels of Cd scavenging through Fe and Mn oxides agreed well with those predicted through additive-adsorption and linear-regression models. 相似文献
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Rajiv Kumar Mir Irfan Ul Haq Ankush Raina Ankush Anand 《International Journal of Sustainable Engineering》2019,12(3):212-220
The growing industrial demand for sustainable materials has led to a paradigm shift in the focus from synthetic polymers towards natural fibres. This paper deals with the challenges and opportunities associated with the use of natural fibre-reinforced polymer composites in various industrial applications. Natural fibres being biodegradable, light in weight, cost-effective and environment friendly are good candidate materials for modern industrial applications. Use of natural fibres in various industries with a focus on automotive and furniture industry has been discussed. The commonly used natural fibres in polymer composites including jute, hemp, sisal, kenaf, bamboo, cotton, flax, abaca, coir etc. have been dealt with in this paper. The literature revealed that tensile strength and other mechanical properties of these fibres are comparable to synthetic fibres like glass or carbon fibres. However, the temperature stability of polymers limits their extensive use and remains an issue to be addressed. 相似文献