EPDM insulating rubber compound

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3000 Tons kg/month

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Product Description:

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

90Irradiation 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

1.111.51

151201

60110

160-200℃

XJ-30F

Common rubber extruder

1.111.51

201251

110180

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

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

150240h

135168h

135168h

135168h

158168h

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 20Ωm

≥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


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Q:What are the main raw materials used in plastic products?
PS plastic (polystyrene) English Name: PolystyreneSpecific gravity: 1.05 g / cubic centimeter molding shrinkage: 0.6-0.8% molding temperature: 170-250 DEG C drying conditions: ---The material properties of electrical insulation (especially high-frequency insulation) excellent, colorless and transparent, light transmittance after organic glass, color of water resistance, good chemical stability and strength. In general, but the crisp, easy to produce stress cracking, no resistance to benzene. Gasoline and other organic solvents. Suitable for making insulating transparent ornament and. Chemical equipment. Optical instruments and other parts.Molding performance 1. amorphous material, moisture absorption is small, not to be fully dry, not easy to break down, but the coefficient of thermal expansion is large, easy to produce internal stress. Better liquidity, can be used screw or plunger injection molding machine2., should use high material temperature, high mold temperature, low injection pressure, extended injection time, is conducive to reducing internal stress, prevent shrinkage, deformation3., can be used in various forms of gate, gate and plastic parts arc connection, so as not to go to the gate when damaged plastic parts. Stripping large slope, top out even. Plastic parts wall thickness uniform, preferably without insert, if inserts should be preheated
Q:Does high strength polyurethane belong to plastics?
Polyurethane is TPU, belongs to thermoplastic elastomer, classification should belong to synthetic rubber.
Q:What is the material of plastic bottles? Will plasticizers be produced?
The stability of PET is determined by the degree of polymerization of the material. Generally, when the temperature is less than 120 degrees centigrade, the PET material is very safe. In addition to PET, plastics often used in daily use, such as PP and PE, do not add plasticizers. The addition of plasticizer in the making of PVC, PVC as the raw material for the production of some film, plastic film, children's toys, disposable gloves and other products, plastic additives products should be more strict selection of production enterprises, shall comply with the provisions of the relevant EU and national products of environmentally friendly plastics.
Q:What is environmentally friendly engineering plastics?
Because most engineering plastics add halogen flame retardants to increase the flame-retardant properties of plastics, but we refer to halogen environmental damage is great, so now more and more enterprises in the development of halogen free flame retardant material. It is called environmentally friendly engineering plastics.
Q:What is the shell of the relay? What exactly is plastic?
Relays, usually thermosetting plastics, refer to plastics that can be cured or otherwise insoluble in heat or other conditions, such as phenolics, epoxy plastics, etc.. Thermosetting plastics can be divided into two types: formaldehyde, cross-linking and other cross-linking. Formaldehyde crosslinked plastics include phenolic plastics and amino plastics (such as urea formaldehyde melamine formaldehyde etc.).
Q:What can soften a hardened plastic?
Thermoplastic structures are linear structures that soften or melt when heated and are plastically made into a definite shape and hardened after cooling. After heating to a certain extent, it softens again and hardens again after cooling. This process can be repeated many times. For example, most plastics, such as PE, PP, PVC, PPR and PS, belong to thermoplastic plastics. Thermoplastic molding process is relatively simple, can be continuous production, and has a high mechanical strength, so the development of very fast.
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!
My Haier double door refrigerator, air-cooled type, this problem has been a long time, as long as it is plastic products, it will produce a strong plastic taste
Q:Can I marinate salted eggs with a plastic bucket?
Lead salt antioxidant of polyvinyl chloride (PVC) products and ethanol, ether and other solvent exposure will lead precipitation. Lead salt of PVC as a food packaging and Deep-Fried Dough Sticks, fried cake, fried fish, cooked meat products, cake snacks foods to meet, will lead to molecular diffusion into the grease, so can not use PVC plastic bags containing food, especially food containing oil.
Q:Do plastic products contain toxic substances?
Like PE, basically non-toxicBut some additives have low toxicity
Q:White plastic products used for a long time and yellow, how do?
There is a plastic yellow removal agent on the market. Its principle is to dissolve, remove the surface layer, and then cover a new layer of plastic, adding antioxidants to prolong the oxidation time. When the antioxidants are exhausted, the plastic will slowly turn yellow. But you can try.

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