GB/T 32371.4-2015Short term method for measuring the emission properties of low-solvent or solvent-free adhesives after application—Part 4: Determination of volatile diisocyanates (English PDF)

1 Scope

After this part of GB/T 32371 specifies the low-solvent or solvent-free adhesive coating, volatile diisocyanate release characteristics test methods.

This section applies only to the low-solvent or solvent-free adhesive coated surface of the release was measured in the short term volatility of diisocyanate.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 32371.1 after low-solvent or solvent-free adhesive coated release characteristics of short-term methods of measurement - Part 1. General

ISO 16000-9 Indoor air - Part 9. Determination of building products and furniture VOC emission test release

Test cabin Act (Indoorair-Part 9. Determinationoftheemissionofvolatileorganiccompoundsfrombuilding productsandfurnishing-Emissiontestchambermethod)

ISO 16702.2007 Workplace air quality using 1- (2-methoxyphenyl) piperazine and liquid chromatography in the air isocyanate

The total content of ester groups can be detected [Workplaceairquality-Determinationoftotalorganicisocyanategroupsin airusing1- (2-methoxyphenyl) piperazineandliquidchromatography]

Manual sampling pumps - Requirements and test methods (Workplaceatmos- EN1232 workplace atmospheric chemicals pheres-Pumpsforpersonalsamplingofchemicalagents-Requirementsandtestmethods)

Principle 3

Release test collection compartment sufficient air flow rate through the appropriate 1- (2-methoxyphenyl) piperazine (1-2MP) reagent impregnated

Glass fiber adsorption, air volatile isocyanate with 1-2MP react to form a non-volatile isocyanate urea derivatives. use

Acetic anhydride and 1-2MP complete solution for sample analysis in toluene. The resulting solution was concentrated and dried with ultraviolet (UV) detector

Or diode array detector (DAD) High Performance Liquid Chromatography (HPLC) analysis. Isocyanate reaction of the isocyanate derivatives

Biological spectrum with the standard retention time and qualitative comparison, atlas by peak height or peak area quantification.

4 Reagents and materials