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Cold-resistant type one-step process silane crosslinked polyolefin cable material and preparation method thereof

A cross-linked polyolefin and silane cross-linked technology, which is applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve problems such as sheath cracking, high energy consumption, and troubles for customers, and achieve good low temperature resistance. Simple production process, excellent corrosion resistance effect

Inactive Publication Date: 2014-12-24
ANHUI MEITENG SPECIAL ELECTRIC CABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the traditional power cable is laid, the sheath will crack, which will cause a series of quality problems. At present, although a variety of cold-resistant cable silane crosslinking materials have been prepared, for example, Padanaplast in Italy and AEI in the United Kingdom have developed silane crosslinking materials. EPDM products, they all adopt polymer copolymerization, and directly polymerize silane monomers into the linear chain of EPDM. This process can conveniently control the degree of polymerization, and it is easier to control the reaction point, so as to obtain ideal cross-linked products, but the disadvantage is that copolymerization It is difficult to control the reaction parameters, and there are still active points on the chain after copolymerization that are vulnerable to attack; in addition, there is also common soft silane cross-linked cable material technology, which is divided into A component and B component, which consumes a lot of energy and costs High; and components A and B have to be mixed in the wire and cable factory, which brings a lot of trouble to customers

Method used

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  • Cold-resistant type one-step process silane crosslinked polyolefin cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Cold-resistant one-step silane crosslinked polyolefin cable compound and its preparation method:

[0048] The preparation of a base material

[0049] Weighing: 75 parts of linear low-density polyethylene (LLDPE), 15 parts of ultra-low-density polyethylene (VLDPE), 5 parts of metallocene polyethylene, and 5 parts of polyolefin elastomer are mixed evenly to obtain the base material.

[0050] Preparation of two catalyst master batches

[0051] Weighing: 35 parts of linear low-density polyethylene (LLDPE), 60 parts of ultra-low-density polyethylene (VLDPE), 1 part of antioxidant, 1 part of anti-copper agent, 1 part of catalyst, 2 parts of processing aid, respectively passed double Extrude with a screw extruder, granulate, and dry to obtain the catalyst masterbatch.

[0052] Preparation of trisilane crosslinking mixture

[0053] Weighing: 70 parts of silane crosslinking agent, 1 part of initiator, prepared in a closed stainless steel container, and mixed evenly.

[0054]...

Embodiment 2

[0057] Cold-resistant one-step silane crosslinked polyolefin cable compound and its preparation method:

[0058] The preparation of a base material

[0059] Weighing: 40 parts of linear low-density polyethylene (LLDPE), 30 parts of ultra-low-density polyethylene (VLDPE), 10 parts of metallocene polyethylene, and 20 parts of polyolefin elastomer are mixed evenly to obtain the base material.

[0060] Preparation of two catalyst master batches

[0061] Weighing: 35 parts of linear low-density polyethylene (LLDPE), 60 parts of ultra-low-density polyethylene (VLDPE), 1 part of antioxidant, 1 part of anti-copper agent, 1 part of catalyst, 2 parts of processing aid, respectively passed double Extrude with a screw extruder, granulate, and dry to obtain the catalyst masterbatch.

[0062] Preparation of trisilane crosslinking mixture

[0063] Weighing: 90 parts of silane crosslinking agent, 5 parts of initiator, prepared in a closed stainless steel container, and mixed evenly.

[00...

Embodiment 3

[0067] Cold-resistant one-step silane crosslinked polyolefin cable compound and its preparation method:

[0068] The preparation of a base material

[0069] Weighing: 55 parts of linear low-density polyethylene (LLDPE), 20 parts of ultra-low-density polyethylene (VLDPE), 6 parts of metallocene polyethylene, and 19 parts of polyolefin elastomer were mixed evenly to obtain the base material.

[0070] Preparation of two catalyst master batches

[0071] Weighing: 45 parts of linear low-density polyethylene (LLDPE), 39 parts of ultra-low-density polyethylene (VLDPE), 3 parts of antioxidant, 1 part of anti-copper agent, 2 parts of catalyst, 10 parts of processing aid, respectively passed double Extrude with a screw extruder, granulate, and dry to obtain the catalyst masterbatch.

[0072] Preparation of trisilane crosslinking mixture

[0073] Weighing: 80 parts of silane crosslinking agent, 2 parts of initiator, prepared in a closed stainless steel container, and mixed evenly.

...

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Abstract

The invention discloses a cold-resistant type one-step process silane crosslinked polyolefin cable material. A raw material formula of the cold-resistant type one-step process silane crosslinked polyolefin cable material is crossed-linked by a base material, a catalyst master batch and a silane crosslinking mixture in a mass ratio of (90-95) to (5-10) to (1-3). The cold-resistant type one-step process silane crosslinked polyolefin cable material is not divided into a component A and a component B, simple in production process and convenient to use, has good cold temperature resistance, and excellent corrosion resistance, cold resistance and ultraviolet ray resistance.

Description

technical field [0001] The invention relates to a cold-resistant one-step silane crosslinked polyolefin cable material and a preparation method thereof, belonging to the technical field of wire and cable insulation and sheath materials (cable material for short). Background technique [0002] AC wire and cable are indispensable materials in industrial and agricultural production and modern life. my country is the world's largest producer of wire and cable. The wire and cable industry occupies a very important position in my country's national economy. However, my country's northeast, In Northwest China and other regions, the temperature is below 0°C from March to May every year, and the low temperature in winter in special areas can reach -40~-55°C. The climate is extremely cold, the temperature difference between day and night is large, the ultraviolet radiation is strong, and there are frequent strong lightning in some areas. , as cables for railway systems, cables for wind ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K5/5425C08J3/24H01B3/44
CPCC08L23/0815C08J3/24C08L2203/202C08L2205/025C08L2205/035C08L2207/064C08L2312/08C08L2314/06H01B3/441
Inventor 夏江平靳红涛
Owner ANHUI MEITENG SPECIAL ELECTRIC CABLE MATERIALS
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