Investigation of thermal and solar properties of perlite coated woven fabrics


MANASOĞLU G. , KANIK M.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.139, no.4, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Review
  • Volume: 139 Issue: 4
  • Publication Date: 2022
  • Doi Number: 10.1002/app.51543
  • Title of Journal : JOURNAL OF APPLIED POLYMER SCIENCE
  • Keywords: heat transmission factor, particle sizes, perlite coatings, solar reflectance, textiles, thermal conductivity, PARTICLE-SIZE, INSULATION, CONDUCTIVITY, THICKNESS

Abstract

In this study, thermal insulation and solar properties of polyester woven fabrics which were coated with micronized perlite having three different particle sizes (10-38, 50-63, and 100-150 mu m) at four different concentrations (20, 40, 60, and 80 g/kg) were investigated. The coating process was performed according to the knife-over-roll method. Thermal measurements were carried out with two different principles to evaluate contact and radiant heat transfer according to JIS R 2618 (testing method for thermal conductivity of insulating fire bricks by hot wire) and EN ISO 6942 (protective clothing-protection against heat and fire-method of test: evaluation of materials and material assemblies when exposed to a source of radiant heat), respectively. Perlite coating enhanced the thermal insulation property of fabrics. The lowest thermal conductivity coefficient and heat transmission factor (0.088 W/mK and 26.83%) values were obtained at the maximum concentration with the biggest size perlite. With the increasing perlite concentration, solar transmittance values decreased for all particle sizes while solar reflectance values increased.