EPDM insulating rubber compound

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Supply Capability:: 3000 Tons kg/month

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EPDM insulating rubber compound

I. Type and application

Type	Product	Application
XJ-50A	110℃ Insulating rubber compound.EVA	Heat resistant insulating rubber compound for cables and wires,EVA
XJ-30A	90℃ Insulating rubber compound	Heat resistant insulating rubber compound for cables and wires
XJ-30B	90℃ Insulating rubber compound	Heat resistant insulating rubber compound for 0.6/1KV cables and wires
XJ-30F	90℃Irradiation cross-linkable insulating EPDM rubber compound	Heat resistant EPDM insulating compound which processing in plastic extruder.
XJ-60A	125℃ Insulating rubber compound	Heat resistant insulating rubber compound for maximum 1KV cables and wires

II. Product description

EPDMinsulating rubber compound, based on EPDM rubber, is mixed with variousadditives, and is elaborated in the extra-clean conditions. It has varioustemp. grades. The compound has outstanding performances of vulcanization, processing, physical,mechanical, aging and electrical properties. The compound is complied withQ/320585JSDT058-2003 standard.

III. Processing

Type

Processing Equipment

Compression ratio

L/D

Processing temp.

Recommended vulcanize temp.

XJ-50A

XJ-30A

XJ-30B

XJ-60A

Common rubber extruder

1.1：1～1.5：1

15：1～20：1

60～110℃

160-200℃

XJ-30F

Common rubber extruder

1.1：1～1.5：1

20：1～25：1

110～180℃

15-20 megarad irradiation dosage

IV. Maximum useful shelf life

12 monthsat 20℃, 6months at 30℃.

V. Properties

Table

Item	XJ-50A		XJ-30A		XJ-30B		XJ-30F		XJ-60A
Item	Standard	Typical	Standard	Typical	Standard	Typical	Standard	Typical	Standard	Typical
Tensile Strength N/mm²	≥6.5	12.0	≥4.2	6.5	≥8.5	11.0	≥4.2	9.6	≥8.5	12.2
Elongation at Break %	≥200	280	≥200	280	≥200	400	≥200	350	≥200	450
Oven aging 135℃240h	150℃240h		135℃168h		135℃168h		135℃168h		158℃168h
Variation on Tensile Strength %	≤±30	+5	±30	-10.8	±30	+5	±30	+5	±30	+9.5
Variation on Elongation at Break %	≤±30	-6	±30	-10.7	±30	-11	±30	-9.5	±30	-8.0
Dielectric Strength MV/m	≥25	26	≥25	28	≥25	28	≥25	27	≥25	30
Air bomb aging test 127℃40h
Tensile Strength N/mm²	≥6.0	11.3	≥6.0	6.0
Variation %		-6	±30	-8.3	±30	-8	±30	-4	±30	-6
Elongation at Break %		240		270
Variation %	≤-30	-15	±30	-3.6	±30	-6	±30	-5	±30	+3
Hot Prolongation 250℃	15min20N/cm		15min20N/cm		15min20N/cm		15min20N/cm		15min20N/cm
Elongation Under Load %	≤100	60	≤175	60	≤175	60	≤175	70	≤175	50
Permanent Elongation after cooling %	≤25	10	≤15	10	≤15	10	≤15	10	≤15	10
Volume Resistivity at 20℃Ω﹒m	≥1.0×10¹⁰	2.5×10¹²	≥1.0×10¹⁰	1.2×10¹²	≥1.0×10¹⁰	1.5×10¹³	≥1.0×10¹⁰	8.5×10¹²	≥1.0×10¹⁰	2.0×10¹³
Elastic Modulus
At 150% ElongationN/mm²					≥4.5	5.5			≥4.5	6.5
At 50% Elongation N/mm²					≤7.5	6.1			≤7.5	5.0
Capacitance variation after water immersion 50±2℃
Between one day and seven days %					≤15	10			≤15	8
Between seven days and fourteen days %					≤5	2			≤5	2
Hardness IRHD					≥80	80			≥80	80
Ozone Resistance and Ozone Concentration			0.025-0.030%30h		2-3.33PPM		0.025-0.030%30h		2-3.33PPM
Surface Variation			Non cracking	Non cracking	Non cracking	Pass	Non cracking	Non cracking	Non cracking	Pass
Heat Pressing Deformation 150℃0.5h
Pressing Depth %	≤50	25

Q: How do olive nets help in reducing labor costs during harvesting?: Olive nets help in reducing labor costs during harvesting by providing a more efficient and time-saving method. These nets are spread under the olive trees to catch the falling olives, eliminating the need for manual picking. Instead of manually collecting olives from the ground, laborers can simply gather the olives from the nets, significantly reducing the time and effort required. This efficient harvesting technique helps save labor costs by reducing the number of workers needed and increasing overall productivity.

Q: Are there any specific guidelines for using olive nets on young or newly planted olive trees?: Yes, there are specific guidelines for using olive nets on young or newly planted olive trees. It is generally recommended to avoid using nets on young trees, especially during the first year of growth, as they need maximum sunlight exposure for healthy development. However, if nets are required for protection against birds or pests, it is advised to use them only during fruiting season and ensure they are loosely draped over the trees to allow sufficient air circulation and prevent damage to the delicate branches. Regular monitoring and adjustments may also be necessary to avoid any potential harm to the young olive trees.

Q: Are there any specific techniques for training olive tree branches when using olive nets?: Yes, there are specific techniques for training olive tree branches when using olive nets. One commonly used technique is called "upright training," where the branches are trained to grow vertically upwards towards the netting. This helps in preventing the branches from drooping or touching the ground, which can lead to damage or disease. Additionally, some farmers also employ the "open center" training method, which involves pruning the central branches to create an open space in the center of the tree, allowing better air circulation and sunlight penetration. These techniques ensure efficient use of the olive nets and promote healthier growth of the olive trees.

Q: How about making a bottle of yogurt with plastic bottles?: Hello. Glass is best, plastic bottles are easy to produce toxins,A bottle that can be recycled is ok.

Q: Are olive nets reusable for multiple seasons?: Yes, olive nets are typically reusable for multiple seasons. They are designed to withstand different weather conditions and can be easily cleaned and stored for future use.

Q: Can olive nets be used in regions with high wind speeds?: Olive nets can be used in regions with high wind speeds, but their effectiveness may be reduced. The strong winds can potentially cause the nets to tear or become dislodged, which may lead to a lower yield or damage to the olive trees. Therefore, it is recommended to assess the specific wind conditions and consider using additional anchoring methods or alternative protective measures to ensure the nets' stability in such regions.

Q: Can olive nets be used to improve water use efficiency?: Yes, olive nets can be used to improve water use efficiency. These nets are commonly used in olive farming to protect the trees from extreme weather conditions and pests, but they also have the added benefit of reducing water evaporation from the soil. By covering the ground with olive nets, evaporation is minimized, allowing the plants to make better use of the available water. This helps conserve water resources and improves overall water use efficiency in olive cultivation.

Q: How do you determine the right size of olive net for your trees?: To determine the right size of olive net for your trees, you need to measure the height and width of your olive trees. Additionally, consider the density and spread of the branches. Choose a net with dimensions that comfortably cover the entire tree, ensuring it is wide enough to reach the ground and tall enough to cover the canopy without causing damage or being too loose.

Q: What is the role of calcium carbonate in plastics?: Improve the hardness and rigidity of plastic productsIn plastics, especially in soft PVC, the hardness increases with the amount of calcium carbonate, and the elongation decreases with the increase of hardness. Particle size, oil absorption value of calcium carbonate, hardness growth rate. Conversely, the particle crude oil absorption value of small calcium carbonate, plastic hardness growth rate is small. In soft PVC, calcium carbonate (light) is the next to the lowest hardness growth rate of heavy calcium carbonate.

Q: Can olive nets be used in areas with heavy rainfall?: Yes, olive nets can be used in areas with heavy rainfall. Olive nets are designed to protect the olives from birds and other pests, as well as to collect the fallen olives during harvesting. They are made from durable materials that can withstand different weather conditions, including heavy rainfall. However, it is important to ensure proper installation and maintenance of the nets to prevent any damage or water accumulation that could affect their effectiveness.

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