MDPE Plastic Cross-Linked Polyethylene Insulation Material Medium Density PE

• Customization: Available
• Carrier: PE
• Color: White
• Model NO.: T-PE011
• Transport Package: Carton
• Specification: 1.25ton/Pallet
• Trademark: NA
• Origin: China
• HS Code: 390110000

Product Description

Description

Black medium-density polyethylene sheath material MDPE adopts a special base material formula and adds a variety of additives. MDPE is made by comprehensively improving polyethylene and can meet the requirements of different cables. Injection molding grade MDPE plastic sheath material can be used to make optical cable sheath, overhead cable insulation sheath and other environments with strict requirements on sheath strength and wear resistance.

Feature

Medium density polyethylene MDPE has excellent weather resistance;
environmental stress crack resistance;
extrusion processability;

Application

optical cable sheath, overhead cable insulation sheath and other environments with strict requirements on sheath strength and wear resistance.

Package and Transport
Packaging:750kg,500kg polyethylene inner bag with outer woven bag;or 25kg paper-plastic lamina- tion bag

Other Details

Performance	Unit	HDPE	MDPE	LLDPE
Fusant flow rate	g/10min	≤2.0	≤2.0	≤2.0
Density	g/cm3	0.955~0.978	0.940~0.955	≤0.940
Tensile strength before aging	Mpa	≥20.0	≥17.0	≥14.0
Elongation at break before aging	--	≥650%	≥600%	≥600%
Tensile strength after aging	Mpa	(110±2)ºC,240h,≥20.0	(110±2)ºC,240h,≥16.0	-76ºC,3min,maximum cracking quantity/test sample quantity:15/30
Elongation at break after aging	--	(110±2)ºC,240h,≥650%	(110±2)ºC,240h,≥500%	500h,failure quantity/test sample quantity0/10
Low temperature impact catalytic	individual	-76ºC,3min,maximum cracking quantity/test sample quantity:15/30	-76ºC,3min,maximum cracking quantity/test sample quantity:15/30	/
Resistance to environment stress cracking	individual	500h,failure quantity/test sample quantity0/10	500h,failure quantity/test sample quantity0/10	/
Oxidation induction time	min	≥30	≥30	≥30
Black carbon cantent	--	(2.60±0.25)%	(2.60±0.25)%	(2.60±0.25)%
Black carbon dispersity	level	≤3	≤3	≤3
Dielectric strength	KV/mm	≥25	≥25	≥25
Volume resistance	Ω·m	≥1*1014	≥1*1014	≥1*1014
Dielectric constant	--	≤2.75	≤2.75	≤2.80

Two-Step Si lane Cross-Linked Polyethylene Insulation Material for Wires and Cables of 10kV and Below
 

Name	Model	Application	Standard
Si lane cross-linked polyethylene insulation material for 10kV and below wires and cables	T-PE010	Low voltage power cables and control cables	JB/T10437-2024
Si lane naturally cross-linked polyethylene insulation material for 10kV and below wires and cables	T-PE011	Low voltage power cables and control cables
Si lane cross-linked polyethylene insulation material for small-sized wires and cables	T-PE012	Small sized wires, cables, and control cables
Si lane cross-linked polyethylene insulation material for overhead cables of 10kV and below	T-PE013	Overhead cable	JB/T10260-2014
S ilane cross-linked high carbon black content polyethylene insulation material for overhead cables of 10kV and below	T-PE014	Overhead cable (carbon black content 2.0%)	JB/T10260-2014

Precautions for use:
1. This product is divided into A material and B material. When using, one pack of A material is mixed with one pack of B material. During use, A and B materials are mixed evenly, and no moisture is introduced during the mixing process. A material does not need to be dried. The use of raw materials with broken packaging is strictly prohibited. Soft air packaging can be used after discharge verification. The A and B materials should be mixed and used within 8 hours to avoid affecting the extrusion surface of the cable.
2. For first-time processing and use, it is recommended to clean the screw and barrel thoroughly, and avoid introducing moisture and other impurities during the processing.
3. When adding other color masterbatch, it is recommended to dry the masterbatch in an 80 ºC oven for more than 2 hours to avoid moisture affecting the extruded surface.
4. When the extrusion process requires changing the main engine speed, it is necessary to slowly adjust the main engine speed, and do not increase or decrease the main engine speed too quickly to prevent poor plasticization.

Extrusion process:
1. It is recommended to use PE specific screws for extrusion.
2. It is recommended to use segmented cooling in the water tank, with the first section having a temperature of ≥ 60 ºC.
3. It is recommended to use extrusion or semi extrusion molds when extruding insulated wire cores of 6mm2 or less.

Processing technology:
It is recommended to use a polyethylene specific extruder for processing.

Model	Line Speed	Machine Barrel	Die head
T-PE010	≤200m/min	135ºC- 165ºC- 175ºC- 180ºC	175-190ºC
T-PE011	≤200m/min	135ºC- 165ºC- 175ºC- 180ºC	175-190ºC
T-PE012	≤350m/min	135ºC- 165ºC- 175ºC- 180ºC	175-190ºC
T-PE013/T-PE014	≤120m/min	135ºC- 165ºC- 175ºC- 180ºC	175-190ºC

Crosslinking conditions:
The crosslinking conditions depend on the uniformity of the mixture of material A and material B, the insulation thickness of the wire and cable, humidity, crosslinking temperature, and the sealing degree of the steam room.
Boiling and steam cross-linking time: Steam temperature is 90-95 ºC, and the steam room is well sealed.
 

Insulation nominal thickness (mm)	Boiling/steaming temperature (ºC)	Crosslinking time (h)
0.7	90-95ºC	1.0~2.0
0.9	90-95ºC	1.5~2.5
1.0	90-95ºC	2.0~3.0
1.2	90-95ºC	3.0~4.0
1.4	90-95ºC	3.5~5.0
1.8	90-95ºC	5.0~6.0

T-PE011 natural crosslinking time: The wire core is placed under natural conditions and crosslinked with the help of ambient temperature and moisture in the air.

Insulation nominal thickness (mm)	Crosslinking conditions	Crosslinking time (days)
1.0	25ºC , 70% relative humidity	3~5
1.4	25ºC , 70% relative humidity	7~10
1.8	25ºC , 70% relative humidity	10~14
2.0	25ºC , 70% relative humidity	14~21

Performance Indicators:

Item		Unit	Technology Requirements
			T-PE010,T-PE011,T-PE012	T-PE013,T-PE014
Tensile strength		MPa	≥ 13.5	≥ 13.0
Elongation at break		%	≥350	≥300
Low temperature brittleness temperature		ºC Failures No.	-76 ≤15/30	-76 ≤15/30
Volume resistivity at 20 ºC		Ω ·m	≥ 1.0×1014	≥ 5.0×1013
Dielectric strength		MV/m	≥25.0	≥25.0
Gel content		%	≥60.0	--
Hot air aging 135±2ºC×168h	Change rate of tensile strength	%	≤±20	≤±20
	Change rate of elongation at break	%	≤±20	≤±20
Thermal extension test 200±3ºC×0.2MPa×15min	Elongation under load	%	≤100	≤175
	Permanent deformation after cooling	%	≤5	≤15
Artificial climate aging resistance test, after 42 days of aging	Change rate of tensile strength	%	--	≤±30
	Change rate of elongation at break	%	--	≤±30
Artificial climate aging resistance test, comparison between aging for 42 days and 21 days	Change rate of tensile strength	%	--	≤±15
	Change rate of elongation at break	%	--	≤±15

Packaging and Storage:
This product is packaged in vacuum sealed aluminum-plastic bags, with a net weight of 23.75kg/bag for material A and 1.25kg/bag for material B (23kg for material A and 2kg for material B in CGN-YJWG-10G). The net weight of each pallet of products is 1.25 tons. The product should be protected from damage or moisture during transportation or storage, and the storage environment should be ventilated and dry, avoiding sun exposure, rain, and mechanical damage.
The storage period of this product is 6 months from the date of production.