Пластики армированные на основе ненасыщенных полиэфирных смол. Определение содержания остаточного мономера стирола
Название (англ.):
Reinforced plastics based on unsaturated polyester resins; Determination of residual styrene monomer content
Описание (англ.):
The residual styrene monomer content in reinforced plastics based on unsaturated polyester (UP) resins is an important criterion in evaluating the degree of cure of UP resins in the polymerized state. The determination is carried out by extraction of the residual monomer styrene from the UP resin in the polymerized state using dichloromethane and subsequent gaschromatographicanalysis of the extract with n-butyl-benzene as internal standard. An alternative method of determining the residual styrene monomer by the Wijs method is also specified.
Дата регистрации:
01.11.85
Дата введения:
01.09.85
Код КГС:
Л29
Код ОКСТУ:
2209;2226
Код ОКС(МКС):
83.120
Код ОКП:
2209;2226
Нормативные ссылки:
DIN 53394-1974, NEQ*SFS 3911-1982, NEQ*UNI 8952-1988, NEQ*UNI 9179-1988, NEQ*NEN-ISO 4901(1989/NNI), EQV*BS 2782 PART 4 METHOD 432A(1991/BSI), EQV*NF T57-110(1994/AFNOR), EQV*NF ISO 4901(1994/AFNOR), EQV
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT GAS CHROMATOGRAPHY MOULDING MATERIALS MOULDINGS (SHAPED SECTION) PLASTIC REINFORCEMENTS PLASTICS POLYESTER RESINS POLYESTERS STYRENE CHEMICAL ANALYSIS AND TESTIN CASTINGS