Jiangsu Dongfang Cable Material Co., Ltd.

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Medium Density Flame Retardant Polyethylene Sheath Material Class A

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Flame Retardant Polyethylene Sheath Material

Description

Foreword

Type A medium density flame retardant polyethylene sheathing material is made of polyethylene resin as the main raw material, adding an appropriate amount of environmental protection flame retardants, antioxidants, modifiers and other processing aids, mixed and extruded , Granular plastic made by granulation.

Product name, model and purpose

The medium density flame retardant polyethylene sheath material produced by our company not only has the general characteristics of ordinary flame retardant polyethylene sheath material, but also has high hardness, good wear resistance, good physical and mechanical properties, excellent processing performance, etc. Features. The product names, models and main uses are as follows:

Name	Model	Primary use
Medium flame retardant polyethylene sheath material class A	ZH-MDPE-A (OI≥30)	It is mainly used for XLPE insulated corrugated aluminum sheathed PE outer sheathed flame retardant power cables of 66KV and above, with a maximum working temperature of 90℃.

Performance

Typical mechanical and electrical properties

Experimental Project		Units	Specifications
Density	≤	g/cm³	1.25
tensile strength	≥	Mpa	14.0
Elongation at break	≥	%	500
Environmental stress cracking resistance	≥	F₀/h	500
Low temperature impact embrittlement temperature	≤	℃	-60
High temperature pressure test (110℃, 6h)	≤	%	50
110℃ air oven heat aging for 240 hours
Rate of Tensile Strength Change	±	%	25
Rate of change in elongation at break	±	%	25
Volume resistivity at 20℃	≥	Ω.m	5.0×10¹³
95±1℃ volume resistivity	≥	Ω.m	5.0×10¹³
Dielectric Strength	≥	MV/m	25
200℃ oxidative induction period	≥	min	40
Carbon black content		%	2.5±0.5
Oxygen Index	≥	%	30

Instructions

If the product needs to be dried before use when the product has a long storage period, it is recommended to use blast drying. It can be discharged by a single screw extruder with L/D≥25. It is better to enter the hot material into the extruder. The plastic temperature is as follows:

Workspace		Zone 1	Zone 2	Zone 3	Zone 4	Zone 5	Zone 6	Zone 7	Zone 8
Temperature °C	ZH-MDPE-A (OI≥30)	110	120	130	135	140	145	140	145

Packaging, Shipping, Storage

1. The inner bag of the product is made of polyethylene film bag, and the outer packaging is packed in a composite bag. The net weight of each bag is 25± 0.2kg, and other packaging and unit net weight can also be used.

2. Transportation and storage

The product shall not be exposed to sunlight and rain during transportation, and shall be kept clean, dry, free from contamination, and kept in a complete package.

The product should be stored in a clean, dry, cool and ventilated warehouse, and the storage period is 6 months from the production date.

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