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Emissions from thermal insulations—part 2: evaluation of emissions from organic and inorganic insulations

机译：绝热材料的排放-第2部分：有机和无机绝热材料的评估

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The aim of this study was to examine microbial, chemical and physical (particle) emissions from organic and inorganic thermal insulations with a multifunctional apparatus developed for this purpose. In addition, basic quality parameters of the insulation materials, including microbial content, ignition residue and density, were determined. The particular focus of the study was on bast fibrous insulations made of bast fibres of flax, linseed and hemp. The amounts of microbes in the dry insulations varied greatly, up to 10~7 cfu/g. Several taxa of fungi were detected from the bast fibrous insulations, some of which may produce toxins in suitable conditions. The lowest microbial contents were found in the commercial products. However, emissions of moulds from all insulations made from bast fibres were significant at 90% RH, whereas at lower RHs they were negligible. Only a minor amount of emissions was detected from the reference materials at any RH. Emissions of bacteria were negligible for all materials and conditions. The emission levels of VOCs were negligible for all materials except recycled wood. However, several components of the VOC emissions were identified. No significant emissions of particles were detected from thermal insulations made of bast fibres of flax and hemp. In the case of insulations, particularly those made of organic fibres, it is essential to follow good manufacturing practices and to keep the insulations in a dry place throughout the manufacturing and building process in order to minimize hygienic risks in insulations.
机译：这项研究的目的是使用为此目的开发的多功能设备来检查有机和无机绝热材料的微生物，化学和物理（颗粒）排放。此外，还确定了隔热材料的基本质量参数，包括微生物含量，灼烧残渣和密度。研究的特别重点是由亚麻，亚麻籽和大麻的韧皮纤维制成的韧皮纤维绝缘材料。干绝热层中的微生物数量变化很大，高达10〜7 cfu / g。从韧皮纤维隔离物中检测到了几种真菌类群，其中一些可能在适当的条件下产生毒素。在商品中发现最低的微生物含量。但是，由韧皮纤维制成的所有绝缘体中的霉菌排放在90％RH时是显着的，而在RH较低时则可以忽略不计。在任何相对湿度下，仅从参考物质中检测到少量排放。对于所有材料和条件，细菌的排放均可以忽略不计。对于除再生木材以外的所有材料，VOC的排放水平均可以忽略不计。但是，确定了VOC排放的几个组成部分。由亚麻和麻的韧皮纤维制成的绝热材料未检测到明显的颗粒排放。对于绝缘材料，特别是由有机纤维制成的绝缘材料，必须遵循良好的生产规范，并在整个制造和建造过程中将绝缘材料保持在干燥的地方，以最大程度地降低绝缘材料的卫生风险。

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