ISO 15038:1999 PDF
Plastics — Organic-perester crosslinking agents for unsaturated-polyester thermosetting materials — Determination of active-oxygen content
Plastics — Organic-perester crosslinking agents for unsaturated-polyester thermosetting materials — Determination of active-oxygen content
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 24 июня 1999 г.
- Издание:
- ISO IS 15038 edition 1 version 1
- ICS:
- 83.040.30
Abstract
Overview
ISO 15038:1999 specifies a laboratory method for determining the total active‑oxygen content of organic perester crosslinking agents used with unsaturated‑polyester thermosetting materials. The standard covers a titrimetric procedure in which the perester is reacted with potassium iodide in an isopropanol/acetic acid medium (with CuCl2 catalyst) and the liberated iodine is quantified by titration with standardized sodium thiosulfate. A normative annex (Annex A) gives a complementary procedure to determine when present as an impurity.
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