1.1.This method describes procedures for collecting volatile and semi-volatile chemicals emitted from samples of cured spray polyurethane foam (SPF) insulation using a micro-scale environmental chamber apparatus operated at defined conditions. When combined with specific analytical methods, these procedures are used to measure SPF emissions of vapor-phase volatile organic compounds (VOCs) such as blowing agents, formaldehyde and other carbonyl compounds and semivolatile organic compounds (SVOCs) such as amine catalysts and flame retardants. Measurement of emissions of isocyanates such as methylene diphenyl diisocyanate (MDI) from SPF requires a specialized chamber and procedures; therefore, these emissions are excluded from the scope of this practice. 1.2. VOC and SVOC concentration and emission data generated by this method are used for various purposes including comparison of product formulations and investigation of potential impacts of a SPF formulation on indoor air quality. Due to environmental and other factors that may not be accounted for with the conditions described in this method, the emission data from this method may not represent actual building conditions. 1.3.This method is intended to be performed using SPF samples that are sprayed and packaged as described in D 7859 Standard Practice for Spraying, Sampling, Packaging, and Test Specimen Preparation of Spray Polyurethane Foam (SPF) Insulation for Testing of Emissions Using Environmental Chambers. This method does not consider chemical emissions from spraying or curing (Practice D 7859 specifies 1 hour cure time); only the emissions from cured SPF samples are captured from the micro-scale chamber. 1.4.This method may be used to measure chemical emissions from test samples of SPF insulation that have been applied in residential or commercial buildings. For example, the method may be used to investigate an odor after product application. The chemical emissions from these samples (aside from the compounds specific to the formulation) may not all be attributed from the SPF product due to possible adsorption onto the SPF from other materials. 1.5.This method is intended to complement, not replace reference methods for measuring chemical emissions (e.g., small-scale chamber tests, Guide D 5116; and emission cell tests, Practice D 7143). However, these reference standards may not adequately address the emissions of some SVOCs that are used in SPF insulation due to wall adsorption effects in conventional chambers. 1.6.This method was developed specifically for SPF insulation products. Compatible material/product types that may be tested in the micro-scale chamber apparatus include two-component high pressure and two-component low pressure formulations of open-cell and closed-cell SPF insulation. 1.7. The test temperature will impact the emissions and may impact interactions between emissions and chamber surfaces. The temperature is maintained at 23 C during the duration of the micro-scale chamber test (Test Method A); however, testing may also be performed at 40 and/or 65 C to enhance the emissions of SVOCs (Test Method B). Gas sample collection and chemical analysis are dependent upon the properties of the target compounds; specific requirements for SPF insulation samples are described in this method. Applicable procedures are described in EPA TO-17, ISO 16000-6 for analysis of selected VOCs and SVOCs, Practice D 6196 for selection of sorbent tubes, and Test Method D 5197 for analysis of formaldehyde and other carbonyl compounds.
Currently, there are no standardized test methods that adequately address measuring the chemical emissions of SPF insulation products. This standard will address that need in conjunction with Work Item WK30960 Practice for Spraying, Sampling, Packaging, and Test Specimen Preparation of Spray Polyurethane Foam (SPF) Insulation Samples for Environmental Chamber Emissions Testing. The standard may be used by product manufacturers, air quality laboratories, regulatory agencies, and so forth.
Keywordsspray polyurethane foam; SPF; insulation; emissions; indoor air quality; semi-volatile organic compounds; SVOCs; volatile organic compounds; VOCs
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
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