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The generalised chemical structure of polyisocyanurate showing the isocyanurate group. The polyols are abbreviated as R-groups.. Polyisocyanurate (/ ˌ p ɒ l ɪ ˌ aɪ s oʊ s aɪ ˈ æ nj ʊər eɪ t /), also referred to as PIR, polyol, or ISO, is a thermoset plastic [1] typically produced as a foam and used as rigid thermal insulation.
A multi-family residential building under construction with rigid panel exterior insulating sheathing. Rigid panel insulation, also referred to as continuous insulation, [1] can be made from foam plastics such as polyurethane (PUR), polyisocyanurate (PIR), and polystyrene, or from fibrous materials such as fiberglass, rock and slag wool.
16 CFR Part 1209 (Consumer Products Safety Commission, or CPSC) – covers settled density, corrosiveness, critical radiant flux, and smoldering combustion. ASTM Standard C-739 – loose-fill cellulose insulation – covers all factors of the CPSC regulation and five additional characteristics, R-value, starch content, moisture absorption, odor ...
Styrofoam can be used under roads and other structures to prevent soil disturbances due to freezing and thawing. [8] [9] DuPont also produces Styrofoam blocks and other shapes for use by florists and in craft products. [10] DuPont insulation Styrofoam has a distinctive blue color; Styrofoam for craft applications is available in white and green ...
In the United States, the International Building Code and ASTM International define Exterior Insulation and Finish System (EIFS) as a non-load-bearing exterior wall cladding system that consists of an insulation board attached either adhesively, mechanically, or both, to the substrate; an integrally reinforced base coat; and a textured protective finish coat.
Thermal conductivity varies between 0.029 and 0.039 W/(m·K) depending on bearing strength/density and the average value is ≈0.035 W/(m·K). Water vapor diffusion resistance (μ) of XPS is around 80–250. Commonly extruded polystyrene foam materials include: Styrofoam, also known as Blue Board, produced by DuPont
Positive cash flow is necessary for achieving financial stability and building wealth, but renters are disadvantaged compared to homeowners.
In the United States and Canada, "styrofoam" is often used as a generic term for disposable foam cups, plates, coolers and packing material, although these are made from a different polystyrene product than true Styrofoam Brand Foam, [210] which is made for thermal insulation and craft applications. [211] Tannoy: Public-address (PA) system ...