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High-softness, high-toughness and cracking-resistant sheath material and preparation method thereof

A technology of sheath material and high toughness, applied in the field of high toughness and crack-resistant sheath material and its preparation, can solve the problems of sheath cracking and other problems, and achieve the effect of strong flexibility and high porosity

Pending Publication Date: 2021-11-23
河南国网电缆集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defect that the sheath often cracks during use, the invention provides a high flexibility, high toughness and crack resistance sheath material and its preparation method

Method used

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  • High-softness, high-toughness and cracking-resistant sheath material and preparation method thereof
  • High-softness, high-toughness and cracking-resistant sheath material and preparation method thereof
  • High-softness, high-toughness and cracking-resistant sheath material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A wire cable resistant to cracking with high toughness sheathing material and preparation method, comprising the steps of:

[0046] The first step: the spiral crimp fiber

[0047] The elastic fiber of polyolefin entire tank heated by the heating cylinder to 115 deg.] C, and then through the fiber coil crimper, spiral crimped fibers were prepared, to prepare a helix angle of the spiral crimped fibers is 66 degrees, a pitch of 1 m;

[0048] Step Two: helical crimped fiber crosslinked

[0049] The first step in processing a helical crimped fiber good irradiation crosslinking, electron accelerator energy level by 3.0 MeV electron accelerator, the irradiation dose of 15 million electron de;

[0050] The third step: the helical crimped fiber stretched styling

[0051] The second step after spiral crimped fibers crosslinked by pre-heating the tank to 160. deg.] C, and then uniform stretching, straightening the spiral crimped fibers, then cooled rapidly to room temperature by cooli...

Embodiment 2

[0056] In the same embodiment, the difference is:

[0057] In the fourth step: The composition of the polyolefin melt is: 30 kg linear low density polyethylene, 30 kg of three-membered ethylene rubber, 3kg silicone rubber, 15kg magnesium hydroxide, 0.8kg antioxidant 1010 #, 0.8kg antioxidant 168 #, 2kg Polyethylene Wax, 0.5 kg of methylphenyl silicone oil, 3kg white oil, 2kg masterbatch.

Embodiment 3

[0059] In the same embodiment, the difference is:

[0060] In the fourth step: The composition of the polyolefin melt is: 25 kg linear low-density polyethylene, 25 kg of three yuan ethylene ethylene rubber, 2.5kg silicone rubber, 13kg magnesium hydroxide, 0.65 kg antioxidant 1010 #, 0.65 kg antioxidant 168 #, 1.5kg Polyethylene wax, 0.4 kg of methylphenylsilicone oil, 2.5kg of white oil, 1.5kg of masterbatch.

[0061] Example 1-3 Preparation of Sheath Material Performance Test Comparison (taken from finished cable care cover) as shown in Table 1.

[0062] Table 1 Example 1-3 Preparation Sheet Material Performance

[0063]

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PUM

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Abstract

The invention discloses a high-softness, high-toughness and cracking-resistant sheath material and a preparation method thereof. The high-softness, high-toughness and cracking-resistant sheath material is specifically prepared from polyolefin elastic fibers through the processes of spiral curling, irradiation crosslinking, high-speed mixing, parallel twin-screw extrusion granulation, dipping in a dipping machine head and the like. The product can be used for extruding sheath materials of elevator cables, coal mine cables, crane cables, tower cranes and stacker cables, the sheath of the product has high flexibility, toughness and anti-cracking performance, sheath cracking caused by bending and folding can be avoided in the using process, normal operation of the cables is guaranteed, and the service life of the cables is prolonged.

Description

Technical field [0001] The present invention relates to a wire and cable jacket material with high toughness and resistance to cracking preparation method, the polymer material belongs to the field of polymer technology. Background technique [0002] Currently, wire and cable during use, the sheath materials often occurrence of cracks, damage the cable, in particular such as some mobile cable: elevator cable, a cable for use in mines, cable cranes, tower cranes, stacker cable as well as some of the folded wire is often bent, such as electrical charge cable, vehicle charging cable, phone charging lines. In the installation process often after repeated bending, folding, sheathing material if the low toughness, crack intolerance, often result in cracking of the sheath is damaged, can not protect internal cable insulation and the lead, eventually damage the cable. In order to improve the life of the cable, the normal use of protective cable sheath must have a high flexibility, toughn...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29B9/14C08L23/08C08L23/16C08L23/00C08L83/07C08L83/04C08K3/22C08J5/04
CPCB29B9/06B29B9/14C08J5/046C08J2323/08C08J2323/16C08J2423/00C08J2483/07C08J2483/04C08K2003/2224Y02A30/14
Inventor 孙世豪苏朝化邱俊雅牛正郭华东焦同刚常治伟黄青雷郭亚鹏龚东岭
Owner 河南国网电缆集团有限公司
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