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A thermomechanically recyclable cross-linked cable material and its preparation method

A technology for cross-linking cables and cable materials, applied in the field of wires and cables, can solve problems such as environmental pollution, achieve the effects of good durability, reduce the reaction of HCl removal, and ensure stability

Active Publication Date: 2021-05-25
WUXI HUAMEI CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the cable sheath after cross-linking treatment cannot be recycled through simple thermomechanical treatment like ordinary cable sheaths.
Most cross-linked cable sheaths are disposed of in the form of incineration, causing serious environmental pollution problems

Method used

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  • A thermomechanically recyclable cross-linked cable material and its preparation method
  • A thermomechanically recyclable cross-linked cable material and its preparation method

Examples

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preparation example Construction

[0025] Such as figure 1 Shown, be the preparation method of the cross-linked cable material that can be recycled by thermomechanical of the present invention, comprise the steps:

[0026] Step 1, chlorinated polyethylene with a Cl% content of 100 parts by mass of 30-45% and methacrylates of 5-10 parts by mass, i.e. methyl methacrylate, butyl methacrylate, methacrylic acid One or both of hydroxypropyl ester or glycidyl methacrylate, and 0.5-1.2 parts by mass of peroxide are kneaded on a kneader at 100-110°C for 8-15min to obtain type A grafted chlorinated polyethylene. The peroxide is one of dicumyl peroxide, benzoyl peroxide or 2,5-dimethyl-2,5-bis(t-butyl peroxide)hexane;

[0027] Step 2, 100 parts by mass of chlorinated polyethylene with a Cl% content of 30-45% and 2-8 parts by mass of vinyl alkanoates, i.e. vinyl acetate, vinyl propionate, vinyl butyrate or hexanoate One or two kinds of vinyl esters and 0.1-0.5 parts by mass of peroxide are kneaded on a kneader at 100-11...

Embodiment 1

[0042] Step 1: 100 mass parts of chlorinated polyethylene with a Cl% content of 30%, 5 mass parts of methyl methacrylate, and 0.5 mass parts of benzoyl peroxide are kneaded for 15 minutes at 100 ° C on a kneader, Obtain type A grafted chlorinated polyethylene;

[0043] Step 2: the Cl% content of 100 mass parts is 30% chlorinated polyethylene and the vinyl acetate of 2 mass parts, 6 mass parts vinyl propionate, and a kind of dicumyl peroxide of 0.5 mass part On a kneader, knead at 110°C for 7 minutes to obtain type B grafted chlorinated polyethylene;

[0044] Step 3: the A-type graft chlorinated polyethylene of 50 mass parts, the B-type grafted chlorinated polyethylene of 50 mass parts, the calcium carbonate of 100 mass parts and 60 mass parts pseudo-boehmite, and 2 mass parts Chloropropyltriethoxysilane, 20 parts by mass of silicon dioxide, 10 parts by mass of carbon black, 1 part by mass of microencapsulated red phosphorus flame retardant, 4 parts by mass of dioctyl phthalat...

Embodiment 2

[0048] step 1:

[0049] 100 parts by mass of chlorinated polyethylene with a Cl% content of 45%, 4 parts by mass of butyl methacrylate, 6 parts by mass of hydroxypropyl methacrylate, and 1.2 parts by mass of 2,5-dimethyl- 2,5-bis(tert-butylperoxy)hexane was kneaded at 110°C for 8 minutes on a kneader to obtain type A grafted chlorinated polyethylene;

[0050] Step 2:

[0051] 100 parts by mass of chlorinated polyethylene with a Cl% content of 45%, 2 parts by mass of vinyl butyrate and 0.1 parts by mass of benzoyl peroxide were kneaded for 12 minutes at 100°C on a kneader to obtain Type B branched chlorinated polyethylene;

[0052] Step 3:

[0053] With 50 mass parts of A-type grafted chlorinated polyethylene, 50 mass parts of B-type grafted chlorinated polyethylene, 150 mass parts of calcium carbonate and 30 mass parts of pseudo-boehmite, and 5 mass parts of chloropropyl Triethoxysilane, 20 parts by mass of silicon dioxide, 5 parts by mass of carbon black, 5 parts by mass ...

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Abstract

The invention discloses a thermomechanically recyclable cross-linked cable material and a preparation method thereof, belonging to the field of electric wires and cables. The method disclosed in the invention is to adopt a chemical grafting method, respectively adding specific amounts of methacrylic acid esters and vinyl alkanoate Small ester molecules are grafted to the molecular chain of chlorinated polyethylene, and the grafted ester functional group side chain increases the distance between the molecular chains of chlorinated polyethylene, which acts as a plasticizer and effectively reduces the processing and molding of chlorinated polyethylene. HCl removal reaction during the process; in addition, two different ester side groups form active cross-linking points. Under the action of the catalyst, cross-linking bonds can be formed in the form of transesterification during the molding process, which improves the cable The strength and durability of the material ensures the stability of the cable material; and the ester-based cross-linking bond can realize the dissociation of the ester bond under the action of a specific catalyst, thermal field and mechanical stress, thereby obtaining the recyclability of the cable material .

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to a thermomechanically recyclable cross-linked cable material and a preparation method thereof. Background technique [0002] my country is currently in the post-industrial era marked by automation and informatization, and electronic appliances are widely used in various fields. Cables are an important part of the normal operation of electronic appliances, consisting of a metal core and a polymer sheath. After the polymer sheath is cross-linked, it can effectively improve the mechanical properties, aging resistance and service life of the cable. [0003] However, the cable sheath after cross-linking treatment cannot be recycled through simple thermomechanical treatment like ordinary cable sheaths. Most of the cross-linked cable sheaths are disposed of in the form of incineration, causing serious environmental pollution problems. With the development of the economy, more and more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08K13/06C08K3/26C08K9/10C08K3/02C08K3/36C08K3/04C08F255/02C08F220/06C08F218/10C08F220/20H01B3/44
CPCC08F255/023C08K2003/026C08K2003/265C08L51/003C08L2203/202C08L2205/025C08L2205/03C08L2312/00H01B3/441C08K13/06C08K3/26C08K9/10C08K3/02C08K3/36C08K3/04C08F220/325
Inventor 王经逸张林锐程斌华健华洪彬
Owner WUXI HUAMEI CABLE
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