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Flame-retardant TPU cable sheathing material with electromagnetic shielding function and preparation method of TPU cable sheathing material

A cable sheathing material, electromagnetic shielding technology, applied in circuits, electrical components, organic insulators, etc., can solve problems such as abnormal use, instrument and instrument interference, etc., to reduce usage, low production costs, and excellent mechanical properties. Effect

Inactive Publication Date: 2018-08-17
ADVANCED THERMOPLASTIC POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, electromagnetic interference will also cause interference to instruments and meters, resulting in abnormal use, especially in the field of medical equipment, where the precision of instruments is high, and the electromagnetic interference generated by cables is the main reason for affecting the normal operation of instruments

Method used

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  • Flame-retardant TPU cable sheathing material with electromagnetic shielding function and preparation method of TPU cable sheathing material
  • Flame-retardant TPU cable sheathing material with electromagnetic shielding function and preparation method of TPU cable sheathing material
  • Flame-retardant TPU cable sheathing material with electromagnetic shielding function and preparation method of TPU cable sheathing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A flame-retardant TPU cable sheath material with electromagnetic shielding function, comprising the following raw materials in parts by weight:

[0048]

[0049] The thermoplastic polyurethane is polyether polyurethane.

[0050] The carbon nanotubes are single-walled carbon nanotubes whose surfaces have been acidified.

[0051] The carbon nanotubes have a diameter of 10 nm and an aspect ratio of 100.

[0052] The flame retardant is a halogen-free flame retardant; the halogen-free flame retardant is ammonium phosphate, ammonium polyphosphate, modified ammonium polyphosphate, aluminum hypophosphite or melamine and compounds thereof.

[0053] The compatibilizer is polyurethane prepolymer modified maleic anhydride grafted polyethylene.

[0054] The antioxidant is tetrakis[methylene-3,5-(di-tert-butyl-4-hydroxy-phenyl)propionate]pentaerythritol ester.

[0055] It also includes 1 part of smoke suppressant and 0.02 part of antihydrolysis agent; the smoke suppressant is m...

Embodiment 2

[0061] A flame-retardant TPU cable sheath material with electromagnetic shielding function, comprising the following raw materials in parts by weight:

[0062]

[0063] The thermoplastic polyurethane is polyester polyurethane.

[0064] The carbon nanotubes are multi-walled carbon nanotubes whose surfaces have been acidified.

[0065] The carbon nanotubes have a diameter of 20 nm and an aspect ratio of 200.

[0066] The flame retardant is a mixture of a halogen-containing flame retardant and a synergistic flame retardant in a weight ratio of 4:1; the halogen-containing flame retardant is 2,6-dibromophenylene ether, tetrabromobisphenol A , hexabromocyclododecane, octabromoether, decabromodiphenylethane or polypentabromophenol-based acrylate; the synergistic flame retardant is antimony trioxide, bismuth trioxide, molybdenum trioxide or three ferric oxide.

[0067] The compatibilizer is divinyltetramethyldisiloxane, vinyltriethoxysiloxane, vinyltrichlorosilane or vinyltris(β...

Embodiment 3

[0075] A flame-retardant TPU cable sheath material with electromagnetic shielding function, comprising the following raw materials in parts by weight:

[0076]

[0077] The thermoplastic polyurethane is polycarbonate polyurethane.

[0078] The carbon nanotubes are single-walled carbon nanotubes whose surfaces have been acidified.

[0079] The carbon nanotubes have a diameter of 50 nm and an aspect ratio of 500.

[0080] The flame retardant is a halogen-free flame retardant; the halogen-free flame retardant is zinc borate, montmorillonite, clay or metal hydroxide.

[0081] The compatibilizer is γ-glycidyl etheroxypropyl trimethoxysilane, γ-methacryloxypropyl-trimethoxysilane or N-(β-aminoethyl)-γ-aminopropyl -Methyl-trimethoxysilane.

[0082] The antioxidant is tris[2,4-di-tert-butylphenyl]phosphite.

[0083] It also includes 5 parts of smoke suppressant and 0.06 part of anti-hydrolysis agent; said smoke suppressant is metal oxide; said anti-hydrolysis agent is polycarbo...

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Abstract

The invention relates to the technical field of cable materials, and in particular relates to a flame-retardant thermoplastic polyurethane (TPU) cable sheathing material with an electromagnetic shielding function and a preparation method of the TPU cable sheathing material. The TPU cable sheathing material comprises the following raw materials in parts by weight: 25-85 parts of thermoplastic polyurethane, 5-45 parts of carbon nanotubes, 5-35 parts of a flame retardant, 0.5-5 parts of a compatibilizer, and 0.02-0.1 part of an antioxidant, wherein the carbon nanotubes are surface-acidified single-walled carbon nanotubes or multi-walled carbon nanotubes. The TPU cable sheathing material provided by the invention has the electromagnetic shielding function, the shielding effectiveness (SE) value can reach 17-50 db, and the flame-retardant effect is excellent; and a single vertical burning test can reach a V0 level, the strength is high, the tensile strength can reach 25 MPa or more, the flexibility is good, the elongation at break is high and can reach 400% or more, and the mechanical properties are excellent.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a flame-retardant TPU cable sheath material with electromagnetic shielding function and a preparation method thereof. Background technique [0002] At present, cables are widely used in the fields of power systems, information transmission, and instrumentation systems. However, the cable covering materials made of traditional polymer material PVC are prone to fire and combustion during use, causing fires. Due to the The chlorine content is as high as 60%, which produces fumes of toxic gases such as hydrogen halides and carbon monoxide during combustion. [0003] Polyurethane elastomer refers to a type of elastomeric polymer containing more carbamate functional groups (NH-CO-O-) on the main chain of the macromolecule. It is a typical multi-block copolymer with wear resistance Good, wide hardness range, high strength, high elongation, large load support capacity, good shoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/06C08L75/04C08L69/00C08L63/00C08L25/06C08L67/00C08L71/00C08K13/06C08K7/24C08K3/32C08K5/3492C08K5/06C08K5/136C08K5/02C08K3/38C08K3/34C08K3/22C08K5/521C08K5/523C08K5/5313C08K5/49C08K5/03H01B3/30
CPCC08K2003/2224C08K2003/322C08K2003/323C08K2003/387C08K2201/003C08K2201/011C08K2201/014C08K2201/016C08L75/04C08L75/06C08L75/08C08L2201/02C08L2203/202H01B3/302C08L69/00C08L63/00C08L25/06C08L67/00C08L71/00C08K13/06C08K3/041C08K3/32C08K5/34922C08K5/34928C08K5/06C08K5/136C08K5/02C08K3/38C08K3/346C08K3/22C08K5/521C08K5/523C08K5/5313C08K5/49C08K5/03C08K3/2279
Inventor 李同兵黄有为刘悦钟荣栋
Owner ADVANCED THERMOPLASTIC POLYMER TECH
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