The principle of the method is maintaining a test portion of the PVC at an agreed temperature in a nitrogen gas stream, absorbing the hydrogen chloride evolved in a given amount of demineralized water, and potentiometrically determining the amount of hydrogen chloride evolved in relation to the recorded change in conductivity of the water. The method is recommended for compounded PVC materials and products only, although it can be used for polymers in powder form under appropriate conditions.
Số hiệu tiêu chuẩn
ISO 182-3
Tên tiêu chuẩn
Plastics; determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures; part 3: conductometric method
Ngày phát hành
1993-04-00
Tiêu chuẩn tương đương
NF T51-785-3*NF ISO 182-3 (1994-06-01), IDT *
NF T51-785-3*NF EN ISO 182-3 (2000-12-01), IDT * DIN 53381-1 (1983-05), MOD * DIN EN ISO 182-3 (2001-02), IDT * DIN EN ISO 182-3 (2000-05), IDT * BS EN ISO 182-3 (1993-07-15), IDT * BS EN ISO 182-3 (2001-02-15), IDT * EN ISO 182-3 (2000-09), IDT * prEN ISO 182-3 (2000-01), IDT * SN EN ISO 182-3 (2000-11), IDT * OENORM EN ISO 182-3 (2001-02-01), IDT * OENORM EN ISO 182-3 (2000-03-01), IDT * PN-EN ISO 182-3 (2011-08-05), IDT * PN-ISO 182-3 (1999-08-24), IDT * PN-ISO 182-3/Ap1 (2002-01-18), IDT * SS-EN ISO 182-3 (2000-10-06), IDT * UNE-EN ISO 182-3 (2001-09-30), IDT * STN EN ISO 182-3 (2001-10-01), IDT * CSN EN ISO 182-3 (2001-06-01), IDT * DS/EN ISO 182-3 (2000-12-06), IDT * NEN-EN-ISO 182-3:2000 en (2000-11-01), IDT
Từ khóa
Chemical reactions * Conductimetric methods * Conductivity * Copolymers * Decomposition * Definitions * Determination * High-temperature testing * Homopolymers * Hydrogen chloride * Mouldings (shaped section) * Plastics * Plastics products * Polymers * Polyvinyl chloride * Quality control * Stability * Testing * Thermal properties of materials * Thermal stability * Thermal testing * Vinyl chloride * Deterioration * PVC
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