Obecné elektrotechnické normy

Komise : IEC/TC 15 (Solid electrical insulating materials)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 11.02.2022
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This International Standard gives the requirements for polyimide films used for electrical purposes.

Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone.

Safety warning: it is the responsibility of the user of the methods contained or referred to in this document to ensure that they are used in a safe manner.

Komise : IEC/TC 111 (Environmental standardization for electrical and electronic products and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 25.02.2022
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This part of IEC 62321 specifies two different techniques for the determination of TCEP tris(2-chloroethyl) phosphate (TCEP) in plastics, the GC-MS or LC-MS method; both of which are suitable for quantitative analysis.

These two techniques have been evaluated for use with polyurethane, Polyvinyl chloride and polyethylene materials containing TCEP between 200 mg/kg to 2 000 mg/kg. Use of the methods described in International Standard for other polymers and concentration ranges has not been specifically evaluated.

These test methods do not apply to plastics materials having a processing temperature higher than 230 ℃.

NOTE  TCEP starts thermal decomposition at approximately 230 ℃. Polymer types which have a processing temperature into shapes of plastics (e.g. pellets, moulded parts, or sheets etc.) not exceeding the decomposition temperature can contain TCEP.

Py-TD-GC-MS is another technique, suitable for the screening of TCEP in plastics (See Annex A).

Komise : IEC/TC 111 (Environmental standardization for electrical and electronic products and systems)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 1.03.2022
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This part of IEC 62321 specifies one normative extraction and measurement technique for simultaneous determination of polybrominated biphenyls, polybrominated diphenyl ethers, and four phthalates (di-isobutyl phthalate (DIBP), di-n-butyl phthalate (DBP), benzylbutyl phthalate (BBP), di-(2-ethylhexyl) phthalate (DEHP)) in polymers of electrotechnical products.

Ultrasonic-assisted extraction is described for simultaneous extraction for sample preparation in this document.

Gas chromatography-mass spectrometry (GC-MS) is considered the normative technique for measurement of simultaneous determination of the analytes in range of 25 mg/kg to 2 000 mg/kg.

This test method has been evaluated by the test of PP, PVC, ABS, ACM, PS, PU and PE materials.