GB/T 2917.1-2002 Determination of compounds and products based on vingl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevoted temperatures--Congo red method
Determination of compounds and products based on vingl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevoted temperatures--Congo red method
This standard specifies a method for the determination of the thermal stability at elevated temperature of compounds and products based on vinyl chloride homopolymers and copolymers (in the following text abbreviated to PVC) which evolve hydrogen chloride and any other acidic products.
The method is recommended for compounded materials and products only. It is not recommended for compounds in the form of dry blends. It may be used for the characterization of thermal stability of PVC compounds and products. It is suitable for coloured compounds and products where a discolouration test under the action of heat may be unsatisfactory.
2 Normative References
The following standards contained provisions which, through reference in this standard, constitute provisions of this standard. At the time of publication, all editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB/T 6003.1-1997 Test Sieves of Metal Wire Cloth (eqv ISO 3310-1:1990)
GB/T 6682-1992 Water for Analytical Laboratory Use-Specification and Test Methods (neq ISO 3696:1987)
3 Principle
GB/T 2917.1-2002 The following standards are cited：
