Пластмассы. Фенолоальдегидные смолы. Определение электропроводности экстрактов смолы
Название (англ.):
Plastics; phenolic resins; determination of electrical conductivity of resin extracts
Описание (англ.):
Important for applications in which such resins are used as impregnating materials. The principle is based on addition of an acetone/water mixture to a solution of the resin. The precipitate thus produced is allowed to settle, and the conductance of the suspension remaining above the resin is measured. The conductivity, expressed in microsiemens per centimetre, is then calculated from the measured conductance.
Изменён стандартами:
ISO 9944:1990/Cor.1:1997
Дата регистрации:
01.01.91
Дата введения:
15.12.90
Код ОКС(МКС):
83.080.10
Нормативные ссылки:
DIN 16916-2-1987, EQV*DIN ISO 9944-1992, EQV*prEN 29944-1994, EQV*EN ISO 9944-1995, EQV*BS EN ISO 9944(1995/BSI), EQV*NF T51-442(1995/AFNOR), EQV*NF EN ISO 9944(1995/AFNOR), EQV