共查询到19条相似文献,搜索用时 156 毫秒
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根据生物科学资料介绍了细菌和霉菌的一些最基本的构造和特性,对常见霉腐微生物的繁殖条件做了概括叙述,最后对防霉抗菌问题研究的状况做了分析,对我国的防霉抗菌涂料发展有所助益。 相似文献
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根据生物科学资料介绍了细菌和霉菌的一些最基本的构造和特性,对常见霉腐微生物的繁殖条件做了概括叙述,最后对防霉抗菌问题研究的状况做了分析,对我国的防霉抗菌涂料发展有所助益。 相似文献
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本文以家用电器为例.结合抗菌塑料及制品行业近年来迅速发展后带来的技术变化,对微米和纳米级有机/无机抗菌防霉体系的研制和应用技术、抗菌防霉的测试评价技术标准和相关产品的行业技术规范等内容作了实用性的介绍,为抗菌塑料在制品中的应用提供参考。 相似文献
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《云南化工》2017,(4):29-33
将碳纳米管和玻璃纤维复合成抗菌空气滤纸,来研究不同的负载方式、不同的碳纳米管管径对滤纸抗菌性能的影响。通过扫描电镜SEM,过滤效率和阻力来评价纸张相关性能,通过对大肠杆菌和金黄色葡萄球菌的抗菌效果测定评价其抗菌性。研究结果表明:采用碳纳米管复合的空气滤纸有较好的抗菌性,碳纳米管负载于纸页表面的抗菌效果较好;碳纳米管在空气滤纸上的抗菌率还和管径有关,管径在10~20μm之间碳纳米管复合空气滤纸对大肠杆菌抗菌率为99.80%,金黄色葡萄球菌抗菌率为99.61%,适宜的管径有利于抗菌。复合的抗菌过滤纸可广泛用于医院、生物用过滤器,为研制新型的抗菌过滤器提供了新的材料。 相似文献
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Harvey Patashnick Georg Rupprecht Jeffrey L. Ambs Michael B. Meyer 《Aerosol science and technology》2013,47(1):42-45
Particulate matter (PM) in ambient air is composed of many chemical species of varying vapor pressures. A direct mass measurement of PM mass on filters is the basis of regulatory PM reference methods. The loss of semi-volatile PM mass collected on filters and filter sampling artifacts can produce nonquantifiable biases in reference method measurements depending on the thermodynamic history of the filter; therefore, a reference method cannot be considered a scientific reference standard. A new technique is introduced which has the potential to overcome the difficulties inherent in PM mass measurement and holds the promise of the measurement of PM mass as it exists in ambient air at ambient temperature. While comprehensive laboratory and field studies of the instrument and its components are needed to fully characterize the system, preliminary data have been obtained to provide a basic proof of concept for the technique. 相似文献
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多元涂料防霉剂复配协同效应的探讨 总被引:1,自引:0,他引:1
在借鉴国外一些成熟产品配方基础上,本文采用二元、三元复配防霉体系对12种霉菌进行了抑菌效果研究,结果发现在维持低成本的前提下,二元复配体系的抗菌效果不是很理想,而三元复配体系的抗菌效果良好。综合M IC实验的结果,选取对各种霉菌抑菌效果较强、成本较低、适合应用于水性涂料的BDY、B03和D05为防霉有效成分。 相似文献
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安徽省东关水泥厂立窑采用晶种煅烧工艺后,原用LFEF袋除尘器出现了结露等一系列不良工况,为此,该厂对其采取了强化密封,减少漏风;进风管上设置水冷蝶阀和冷风阀调控温度,选用经特殊表面处理的抗结露滤料和微机自动化控制系统等技术措施,确保了LFEF除尘器的正常运行。文章对立窑等用品种煅烧工艺,LFEF除尘器的操作技术和不良工况的处理措施也作了详细介绍。 相似文献
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北方地区冬季逆流式自然通风冷却塔的防冻主要是采取在塔的斜支柱上挂挡风板,该法操作较为困难,并且不能有效地防止冬季结冰。开发了一种防冻导风降噪设计,不仅解决了逆流式自然通风冷却塔冬季防冻问题,还兼顾到导风和降低噪音的作用。 相似文献
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Magda Blosi Anna Luisa Costa Simona Ortelli Franco Belosi Fabrizio Ravegnani Alessio Varesano Cinzia Tonetti Ilaria Zanoni Claudia Vineis 《应用聚合物科学杂志》2021,138(46):51380
In response to the nowadays battle against SARS-CoV-2, we designed a new class of high performant filter media suitable to advance the facemask technology and provide new efficient widespread solutions against virus propagation. By means of the electrospinning technology we developed filter media based on polyvinyl alcohol (PVA) nanofibers doped with AgNPs combining three main performance requirements: high air filtration efficiency to capture nanometer-size particles, low airflow resistance essential to ensure breathability and antimicrobial activity to inactivate aerosolized microorganisms. PVA/AgNPs electrospun nanofibers were produced by electrospinning the dispersion of colloidal silver into the PVA water solution. A widespread physicochemical characterization was addressed to the Ag colloidal suspension. The key functional performances of the electrospun nanofibers were proven by water stability, antibacterial activity, and filtration efficiency and pressure drop measurements performed under conditions representative of facemasks. We assessed a total bacterial depletion associated to a filtering efficiency towards nano-aerosolized particles of 97.7% higher than required by the EN149 standard and a pressure drop in line with FFP1 and FFP2 masks, even at the highest filtration velocity. Such results pave the way to the application of PVA/AgNPs electrospun nanofibers in facemasks as advanced filtering media for protecting against airborne microorganisms. 相似文献