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Polyethylene 273-81K – TD Polimer Kompaund, OOO | all.biz
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Polyethylene 273-81K

Polyethylene 273-81K

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Technical characteristics
  • BrandТД Полимер Компаунд, ООО
  • Country of manufactureRussia
  • ColorTransparent
Description

 

Polyethylene compositions for the cable industry

273 - 71K, 273 - 81K

 

 

 

 

 

 

Application area:

Compositions of black color, resistant to thermal - oxidative and photo - oxidative aging during processing and operation, are intended for insulation, sheaths and protective covers of wires and cables.

273 - 71K - with increased resistance to photooxidative aging for casings and protective covers.

273 - 81K - with increased resistance to thermal oxidative aging for lightfast insulation.

 

Brief information about compositions:

Polyethylene compositions of grades 273 - 71K and 273 - 81K are made on the basis of low - pressure polyethylene (GOST 16338 - 85) with the introduction of thermal and light stabilizers.

 

 

 

An example of a conventional designation of compositions when ordering and in other documentation:

Polyethylene 273 - 71K, highest grade, GOST 16336 - 2013

 

 

 

Composition quality indicators

 

 

 

No.

The name of indicators

unit of measurement

Normative value

273 - 71K

273 - 81K

1

Melt flow rate, within

g / 10min

0.30 ÷ 0.55

2

The spread of the melt flow rate, no more

%

± 10

3

Density, within

g / cm 3

0.959 ÷ 0.967

0.955 ÷ 0.960

4

Mass fraction of volatile substances, no more

%

0.10

five

Mass fraction of ash, no more

%

0.050

6

Cracking resistance, not less

h

500

7

Tensile yield point, not less

MPa

22.6

eight

Breaking strength, not less

MPa

20.6

nine

Elongation at break,

not less

550

ten

Resistance to thermal oxidative aging, not less

h

6

eight

eleven

Resistance to photooxidative aging, not less

h

350

300

12

The tangent of the angle of dielectric losses at a frequency of 1 M Hz, no more

-

Do not standardize

7 × 10 - 4

13

Dielectric constant at a frequency of 1 MHz, no more

-

Do not standardize

2.4

fourteen

Electric strength at alternating voltage with a frequency of 50 Hz, not less

kV / mm

Do not standardize

35

 

 

 

 

 

 

Technical documentation:

 

 

 

The compositions are produced in accordance with GOST 16336 - 2013 "Polyethylene Compositions for the Cable Industry".

 

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