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Zibo qiwangke industry and Trade Co., Ltd.

Products

Sheathing materials for wires and cables

Sheathing materials for wires and cables


Linear low density polyethylene sheath for communication cable

Brand name:DH-1

Product introduction

DH-1 produced by our company is a new type of sheath material specially developed for communication cables. It has excellent weather resistance, toughness, wear resistance and environmental stress cracking resistance, as well as good performance and softness.

DH-1 is applicable to 10kV and below overhead cables, and it has high requirements for wear resistance

Standard specification

DH-1 sheath material complies with gb15065-2009

Storage and transportation

DH-1 produced by our company adopts double-layer packaging, the inner layer is plastic film bag, the outer layer is film woven bag, the outer layer is film woven bag, each bag is 25kg, with good dust-proof and moisture-proof effect. Containers or special trucks shall be used for transportation, and rainproof measures shall be taken.

The sheath material shall be stored in a clean and dry warehouse away from the fire source. After a long time of storage, it shall be dried in advance before use.


Processing technology

DH-1 is best extruded on a plastic extruder with a length diameter ratio (LD) of 20 or more. The surface of the extruded sheath is smooth and dense. The extrusion speed is also fully suitable for the requirements of the cable manufacturing process. If conditions permit, it is best to pre dry before use. The maximum drying temperature is 80 ℃

Recommended extruder temperature

]

Position

V

Machine head

Die head

Temperature (℃)

170

180

200

210

220 230 235

The above process parameters are only for reference. The stretching of the sheath should be minimized during extrusion. The cooling tank should be cooled in sections with temperature gradient to reduce the ability of the sheath.

Schedule: Typical physical and electrical properties
 

No.

Project

 Single

Typical value

1

colour

 

 True color

2

Solution flow rate

g/10min

0.8

3

Density

g/cm³

0.94

4

Tensile Strength

MPa

20

5

Elongation at break

%

700

6

Low temperature brittleness

≤-76

7

Resistance to environmental stress cracking

h

≥96

8

200 ℃ oxidation induction period

min

≥30

9

Carbon black content

%

2.6

10

Carbon black dispersibility

Minute

≥6

11

Dielectric strength

Mv/m

≥25

12

Volume resistivity

Ωm

≥1×1014

13

Dielectric constant

 

2.4

The next:No
Hotline:

+86-13793645638

Contact us

    Address: yanghuya village, Jinshan Town, Linzi District, Zibo City, Shandong Province
    Tel: +86-13793645638
    Fax: +86-533-7400799
    Website: www.qiwangke.com
    Email: service@qiwangke.com

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