Thermal Insulation materials Fiberglass. Mineral wool. Cellulose. Natural fibers. Polystyrene. Polyisocyanurate. Polyurethane. Perlite.

 https://www.energy.gov/energysaver/insulation-materials

 https://www.energy.gov/energysaver/types-insulation

https://textilesinside.com/5-most-common-thermal-insulation-materials/ 

materials heat transfer rate

https://en.wikipedia.org/wiki/Rate_of_heat_flow