EPDM insulating rubber compound

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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:Can olive nets be used to promote organic certification?: Yes, olive nets can be used to promote organic certification. Olive nets are commonly used in organic farming practices to protect the olives from pests and ensure they are not contaminated with synthetic chemicals. By using olive nets, farmers can demonstrate their commitment to organic farming methods, which can help in obtaining organic certification. Additionally, the use of olive nets can help maintain the quality and integrity of the olives, which is essential for meeting the standards required for organic certification.

Q:What material is better for plastic cups?: 5 is better than PP.The cup has high temperature resistant materials, such as PC, AS, PP.TRITAN, ECOZEN. PC is banned in bottles and some space cups in Europe and america. AS too crisp; PP cost-effective, environmental protection, transparency and feel bad. TRITAN and ECOZEN are currently in the domestic manufacturers do not have the domestic market, export orders, but also environmental protection, does not contain BPA, transparency and feel and equal to PC, the price is high, the daily use of PP can, or glass.

Q:How is an olive net used in olive harvesting?: An olive net is used in olive harvesting by spreading it under the olive trees to catch the falling olives during the shaking or beating process. This helps to prevent the olives from hitting the ground and getting damaged, and allows for easier collection and separation of the olives from debris and leaves.

Q:How do you prevent olive nets from causing damage to nearby structures or buildings?: To prevent olive nets from causing damage to nearby structures or buildings, proper installation and maintenance are essential. Firstly, ensure that the nets are securely fastened and properly tensioned over the olive trees, so that they do not sag or touch any neighboring structures. Regularly inspect the nets for any tears, holes, or loose areas, and promptly repair or replace them to prevent olives from falling through or the nets from becoming dislodged. Additionally, it may be beneficial to create a buffer zone or install protective barriers between the olive trees and nearby structures to provide an extra layer of protection.

Q:What kind of plastic grade does polyether sulfone resin (PES) belong to?: [heat resistance]The heat variant temperature is 200~220 DEG C, the continuous use temperature is 180~200 DEG C, and the UL temperature index is 180 DEG C.[water resistance]Up to 150 to 160 DEG C hot water or steam erosion at high temperatures from acid and alkali.[modulus of temperature, consul sex]The base modulus is almost unchanged at -100 to 200 degrees, especially above 100 DEG C, which is better than any of the thermoplastic resins.

Q:How do olive nets help in reducing the risk of nutrient deficiencies?: Olive nets help in reducing the risk of nutrient deficiencies by providing protection to the olive trees from external factors such as pests, birds, or extreme weather conditions. By preventing damage to the olive trees, the nets ensure the trees can continue to grow and produce olives, which are a valuable source of nutrients. This helps to maintain a consistent supply of olives and subsequently reduces the risk of nutrient deficiencies for individuals who rely on olives as a part of their diet.

Q:How can plastics be broken down into harmless substances?: White pollution is one of the plastic packages that are difficult to degrade. Disposable foam tableware such as fast and we used plastic bags and so on. It is very serious environmental pollution, buried in the soil is difficult to decompose, the soil will lead to reduced capacity, if the burning causes air pollution, so I do not advocate or less with it, buy the best own tools to reduce its use.

Q:How do olive nets prevent olives from being damaged by hail?: Olive nets prevent olives from being damaged by hail by creating a physical barrier between the hailstones and the olives. The nets are designed to absorb the impact of the hail, reducing the force with which it hits the olives. This helps to prevent bruising or splitting of the olives, ensuring a higher quality harvest.

Q:What is the purpose of using a net in olive harvesting?: The purpose of using a net in olive harvesting is to catch the olives as they fall from the tree, preventing damage to both the olives and the ground. This method allows for easier collection and reduces the risk of contamination or loss of the valuable crop.

Q:Do olive nets require any special treatment before installation?: Yes, olive nets typically require some special treatment before installation. They should be cleaned and inspected for any damage or holes. Any debris or dirt should be removed from the nets to ensure proper functioning. Additionally, the nets should be properly stretched and secured to ensure they are evenly spread out and tightly fitted over the olive trees.

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