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PVC Pellets for Cable

PVC Pellets for Cable

PE Pellets for Optical Cable Application MPE-01 PE pellets for optical cable is a black polyethylene granule with high molecular weight, linear and medium density. It is mainly used to make optical cable jacket. Feature Excellent high and low temperature resistance and mechanical properties ,can...
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PE Pellets for Optical Cable

 

Application

MPE-01 PE pellets for optical cable is a black polyethylene granule with high molecular weight, linear and medium density. It is mainly used to make optical cable jacket.


Feature

Excellent high and low temperature resistance and mechanical properties ,can effectively meet the production and application of optical cable outer sheath material.


Main Technical Parameters

Parameter

Typical Value

Test Method

Appearance

Black partical

Visual inspection

Density(g/cm3)

0.94-0.955

GB/T 1033.1-2008

Melt index (g/10min,@190℃、2.16kg)

0.7±0.3

GB/T 3682-2000

Tensile strength(MPa)

≥17

GB/T 1040.3-2006

Tensile yield strength (MPa

≥12

GB/T 1040.3-2006

Elongation at break /%

≥600

GB/T 1040.3-2006

OIT 200℃  /min

≥30

GB/T 2951.42-2008

Carbon black content %

2.6±0.25

GB/T 2951.41-2008

Carbon black dispersity

2

GB/T18251-2000

Oven ageing                                     

Tensile strength /MPa

Elongation at break /MPa

≥16

≥500

GB/T 2951.12-2008

ESCR F0/h

≥500

GB/T 2951.12-2008

Dielectric strength Ed/(kV/mm)

≥25

GB/T 1408.1-2006

Volume resistivity ρv/Ω.m

≥1*1014

GB/T 1410-2006

Permittivity(50Hz)

≤2.8

GB/T 1409-2006

 

Manufacturability

MPE-01 PE pellets for optical cable uses ordinary PE extruder,the length-diameter ratio of screw L/D≥20. Take φ60 for example , three layers of strainer (80 mesh/ 120 mesh /80 mesh) are recommended , melt temperature should below200 ℃,  and to squeeze out a smooth surface and pore-free on cross section are the best.

 

Test Report 

image001.jpg


History of PE:

Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane.[5][6] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long –CH2– chains and termed it polymethylene.

A pill box presented to a technician at ICI in 1936 made from the first pound of polyethylene

The first industrially practical polyethylene synthesis (diazomethane is a notoriously unstable substance that is generally avoided in industrial application) was discovered in 1933 by Eric Fawcett and Reginald Gibson, again by accident, at the Imperial Chemical Industries (ICI) works in Northwich, England.[8] Upon applying extremely high pressure (several hundred atmospheres) to a mixture of ethylene and benzaldehyde they again produced a white, waxy material. Because the reaction had been initiated by trace oxygen contamination in their apparatus, the experiment was, at first, difficult to reproduce. It was not until 1935 that another ICI chemist, Michael Perrin, developed this accident into a reproducible high-pressure synthesis for polyethylene that became the basis for industrial LDPE production beginning in 1939. Because polyethylene was found to have very low-loss properties at very high frequency radio waves, commercial distribution in Britain was suspended on the outbreak of World War II, secrecy imposed, and the new process was used to produce insulation for UHF and SHF coaxial cables of radar sets. During World War II, further research was done on the ICI process and in 1944 Bakelite Corporation at Sabine, Texas, and Du Pont at Charleston, West Virginia, began large-scale commercial production under license from ICI.

The breakthrough landmark in the commercial production of polyethylene began with the development of catalyst that promoted the polymerization at mild temperatures and pressures. The first of these was a chromium trioxide–based catalyst discovered in 1951 by Robert Banks and J. Paul Hogan at Phillips Petroleum.[10] In 1953 the German chemist Karl Ziegler developed a catalytic system based on titanium halides and organoaluminium compounds that worked at even milder conditions than the Phillips catalyst. The Phillips catalyst is less expensive and easier to work with, however, and both methods are heavily used industrially. By the end of the 1950s both the Phillips- and Ziegler-type catalysts were being used for HDPE production. In the 1970s, the Ziegler system was improved by the incorporation of magnesium chloride. Catalytic systems based on soluble catalysts, the metallocenes, were reported in 1976 by Walter Kaminsky and Hansjörg Sinn. The Ziegler- and metallocene-based catalysts families have proven to be very flexible at copolymerizing ethylene with other olefins and have become the basis for the wide range of polyethylene resins available today, including very low density polyethylene and linear low-density polyethylene. Such resins, in the form of UHMWPE fibers, have (as of 2005) begun to replace aramids in many high-strength applications.

 

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    Add: A Building,No.114 Xiangxi Xinwei, Songyuanxia Community, Guanlan Street, Longhua New District, Shenzhen
    Tel: +86-755-23779082
    Fax:+86-755-23063739
    Mob:+86-18928450189
    E-mail: sales@gl-polygel.com
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