| ID (ISN) del documento | 49966 |
| Número CIS |
88-1229 |
| ISSN - Título de la serie |
0002-8894 - American Industrial Hygiene Association Journal |
| Año |
1987 |
| Número de serie |
|
| Autor(es) |
Herrick R.F., Smith T.J. |
| Título |
Development of a sampling and analytical method for measuring the epoxy content of aerosols: I. Development of the analytical method; II. Application of the method to epoxy-containing aerosols |
| Información bibliográfica |
Sep. 1987, Vol.48, No.9, p.766-772. Illus. 16 ref. |
| Resumen |
A method was developed for determining the quantity of the epoxide group in pure epoxy resins, resins in partially-cured mixtures with amine curing agents, and commercial epoxy surface coatings. The method collects the aerosol in a midget impinger containing dimethylformamide, which inhibits the curing reaction between the epoxy and curing agent, preserving the unreacted epoxy functional groups present in the aerosol. It is based upon the reaction of the epoxide group with bromide in the presence of acid, with measurement of excess bromide in the reaction mixture by normal pulse polarography. The method was applied to aerosols containing mixtures of epoxy resin and amine curing agents in various degrees of cure, to aerosols containing large quantities of non-epoxy components, and to aerosols of epoxy surface coatings. The method is capable of precise and accurate measurement of epoxide functionality, and it is applicable to the measurement of epoxy-containing aerosols in spray finishing operations. |
| Descriptores (primarios) |
resinas epóxidos; aerosoles; dosificación en el aire; toma de muestras y análisis; pintura con pistola |
| Descriptores (secundarios) |
aplicación por pulverización; valoración de los resultados; producción de aerosoles experimentales; muestreo por el impactador enano; descripción del procedimiento; polarografía |
| Tipo de documento |
D - Artículos periódicos |
| Tema(s) |
Sustancias tóxicas y peligrosas
|
| Broad subject area(s) |
Riesgos químicos
|
| Navegación por categoria(s) |
Surface treatment
|
