student
Ivanovo, Ivanovo, Russian Federation
Ivanovo, Ivanovo, Russian Federation
Currently, acrylic sealants are widespread due to their environmentally friendly materials, ease of use, and low cost. Their compositions are constantly being improved. It allows ones to improve their quality and reduce the cost by selecting new substances for their manufacture. We obtained acrylic sealants with changing polymer base. The authors used acrylic and styrene acrylic dispersions obtained by emulsion polymerisation. The basis for sealants production is the mechanical mixing of the components and their further dispersion in the Dispermat VLOK dissolver. The main parameter to be determined is the vapour permeability resistance of the material layer. According to research results, the nature of the polymer base, degree of its bonding, type and amount of the filler used affected on vapour permeability of the sealing material. Moreover, increasing in film former temperature, viscosity, and pH causes increasing in tensile strength. By comparing the sealant samples on the basis of dry residue, we found increasing of the Shore hardness in samples with lower % index.
sealants, acrylic dispersions, vapour permeation resistance, properties
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