Abstract
A new method and laboratory installation for measuring gaseous formaldehyde emissions were proposed, by using the automatic formaldehyde analyzer MIS-98170, for urea–formaldehyde resins (UFR), thermal insulation foams based on them, during their manufacture and operation. In order to reduce the toxic characteristics of UFR and urea–formaldehyde polyfoam (UFF), foaming of the composition(UFF) was performed in a foam generator with compressed air. Research has shown that the addition to the UFR resin of 1% CO(NH2)2, reduced by 2 times the content of free formaldehyde in the resin, and reduce by 7.5 times the emission of free formaldehyde from urea–formaldehyde foams into the atmosphere, when drying in air. At the same time, the additional introduction of standard UFF foam composition, 1.5% CaCO3 as a gas generator, reduces the linear and volumetric shrinkage of UFF polyfoam by 5–8 times and improves its thermal insulation properties.
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Kurta, S., Nemish, A., Fedorchenko, S., Khatsevich, O., Riy, V. (2023). Porous Surface Structure and Physico-Chemical Properties of the Urea–Formaldehyde Polyfoam. In: Fesenko, O., Yatsenko, L. (eds) Nanomaterials and Nanocomposites, Nanostructure Surfaces, and Their Applications . Springer Proceedings in Physics, vol 279. Springer, Cham. https://doi.org/10.1007/978-3-031-18096-5_38
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