Black Resistance to Electricity Mark PE compound

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Black Resistance to Electricity Mark PE compound

ⅰ、Type and application

Type	Product	Application
NDGJ-01	Black Weatherability and Resistance to Electricity Mark HDPE Insulating Compound for Aerial Cables	Applied to less than 10KV aerical cables as insulation which has the requirements of resistance to electricity mark.
NDPE-22	Black Resistance to Electricity Mark PE Jacket Compound	Applied to ADSS fiber cables as jacket which has the requirements of resistance to electricity mark.

ⅱ、NDPE is a black and resistance to electricity mark PE jacketcompound special for ADSS cables, which based on PE polymer. NDPE has specialadditive. It has very good performance of resistance to electricity mark, andexcellent electrical properties, weatherability, tenacity, abrasive resistanceand excellent resistance to environmental stress crack. Meeting DL/T 788-2001standard.

ⅲ、Processing

The NDPE compound suits to process with extruder which L/D is 25 orabove 25. And it should be dried before using, the temperature is 90℃.

the following temperature(℃) profile of extruder is recommended:

Zone	1 Zone	2 Zone	3 Zone	4 Zone	Head	Die
Temperature	185	215	220	240	245	250

Note: The processing parameters are for reference only, optimalconditions may vary according to the equipment used. The cooling water tankshould be used sectionally cooling with warm-water echelon in order to reduceinternal stress.

ⅳ、Storage andtransport

Packaging：25kg/bag， PE membrane inside bag and Kraft outside bag.

Storage and transport: Avoiding in direct sunlight and weathering.The storage place should be in clean, cool, dry, and ventilated conditions.

Ⅴ、Properties

Table

Test Item	unit	NDGJ-01		NDPE-22
Test Item	unit	Standard Value	Typical Value	Standard Value	Typical Value
Density	g/cm³	0.945-0.978	0.95	≤1.2	1.12
（2.16kg） Melt Flow Rate	g/10min	≤0.4	0.25	≤0.4	0.33
Tensile Strength	MPa	≥20.0	28.0	≥18.0	20.0
Yield Strength	MPa	≥16.0	21.9	≥15.0	16.0
Elongation at Break	%	≥650	780	≥650	700
Low Temp. Elongation at Break	%	≥175	350	≥175	240
Impact Brittleness Temp.	℃	≤-76	Pass	≤-50	Pass
（115℃4h） Thermal Deformation	%	—	1	—	1
Vicat Softening Temp.	℃	≥110	127	≥110	127
Volume Resistivity	Ω﹒m	≥1.0×10¹⁴	6.0×10¹⁴	≥1.0×10¹⁴	4.0×10¹⁴
Dielectric Strength	MV/m	≥35	36	≥30	33
Dielectric Constant		≤2.45	2.41	—	2.5
Dielectric loss tangent		≤0.001	0.0008	—	—
Resistance to environmental stress crack	h	＞500	pass	＞500	Pass
Resistance to thermal stress crack	h	≥96	Pass	≥96	Pass
Carbon black dispersity	Scatter	≥6	7	≥6	7

Note:1、The sample made method is thermoplastic pressing which is accord toGB9352 standard.

Typical value should not be as standard.

Q:How much is plastic PP5 resistant to cold?: Ordinary homopolymer PP has higher heat resistance, but when it reaches -20 degrees of low temperature, it will not stand, easy to brittle.

Q:Can olive nets be used to enhance sustainable farming practices?: Yes, olive nets can be used to enhance sustainable farming practices. Olive nets are commonly used in olive cultivation to protect the fruit from birds and other pests, reducing the need for chemical pesticides. By minimizing the use of harmful chemicals, olive nets contribute to environmentally friendly farming practices. Additionally, these nets can also help to reduce water consumption by preventing excessive evaporation from the soil, thus promoting water efficiency. Overall, the use of olive nets supports sustainable farming by reducing environmental impact and promoting resource conservation.

Q:I would like to ask you, I use plastic bags or other plastic bags of food in the refrigerator, and take out a plastic flavor, not only in the freezer, but also in fresh keeping!: Polyethylene plastic bags and plastic bags will not taste. If the plastic bag is excluded, then there is something wrong with the refrigerator.

Q:What does "stress hardening" of plastic molding mean?: The plastic molding is various forms (such as powder, granules, solution and dispersion) of plastic products or parts required for the shape of.

Q:How does an olive net affect the overall root development in the olive grove?: An olive net can have a positive effect on the overall root development in an olive grove. The net helps to protect the soil from erosion and excessive drying, creating a more stable and favorable environment for root growth. It also helps to reduce weed competition, allowing more nutrients and water to be available for the olive tree roots. Additionally, the net can provide some shade, which can help to regulate soil temperature and prevent overheating of the roots. Overall, an olive net can contribute to healthier and more robust root development in the olive grove.

Q:How do olive nets help in reducing the risk of weed competition?: Olive nets help in reducing the risk of weed competition by acting as a physical barrier that prevents weed seeds from reaching the soil and germinating. This effectively reduces the available space for weeds to grow and compete with the olive trees for nutrients, water, and sunlight. Additionally, olive nets can also shade the soil, limiting the conditions necessary for weed growth.

Q:Can olive nets be used on olive trees grown in raised beds?: Yes, olive nets can be used on olive trees grown in raised beds. Olive nets are designed to protect the olives from birds and other pests, regardless of the growing method.

Q:How does an olive net affect the overall soil fertility in the olive grove?: An olive net can positively affect the overall soil fertility in an olive grove. The net helps to prevent soil erosion by reducing the impact of heavy rainfall and wind, thereby preserving the topsoil and nutrients. Additionally, the net can also act as a barrier against weed growth, minimizing competition for nutrients and water. Consequently, the olive trees can benefit from improved soil quality and nutrient availability, leading to enhanced overall soil fertility in the olive grove.

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Q:The working principle of plastic mould: The moving die part is mounted on the moving template of the injection machine, and can be moved with the mould system on the injection machine during the injection molding process. Start injection molding, mold closing system drives the movable die toward the fixed mold direction, and at the parting surface and the fixed mold of I, the accuracy of the mold oriented mechanism, a guide column and a guide column is opened holes in the fixed template guarantee. The movable mould and the fixed mould of after fixing groove in the template and fixed on the movable punch on the template structure and product shape and uniform size of closed cavity, the clamping force can be provided in the clamping system of injection molding process in the cavity of the lock, to avoid it to open up in the press under the force of the plastic melt. The injection from the nozzle in the plastic melt into the mold through the opening in the mainstream channel die central, then the sub channel and the goods to be poured into the mold cavity, the mold cavity is filled with melt and after packing, feeding and cooling, clamping system with moving die back reset, so that the dynamic model with two fixed mold opened from sub type surface. When the movable die back to a certain position, installed in the interior of the stripping mechanism will be in the clamping system in pushing device produced by the action of moving and die the other part, so the aggregate will products and runner and runner was the top of the runner off from their punch on one side of the driven mode in this, a complete injection molding process.

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