Flame-retardant PVC cable insulation material or sheath material having electromagnetic shielding function, and preparation method thereof

An electromagnetic shielding and cable insulation technology, applied in the direction of organic insulators, insulators, plastic/resin/wax insulators, etc., can solve problems such as instrument and instrument interference, abnormal use, poor thermal stability, etc., to achieve low production costs and high production efficiency High, stable quality results

Inactive Publication Date: 2018-08-03
ADVANCED THERMOPLASTIC POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price and wide source of raw materials; but also There are the following disadvantages: 1. The toughness is poor, and it is easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 150°C, and the melting temperature of PVC is about 210°C; 3. The viscosity of PVC Extremely high, extremely poor fluidity, which limits its use to a certain extent
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 PVC cable insulation material or sheath material having electromagnetic shielding function, and preparation method thereof
  • Flame-retardant PVC cable insulation material or sheath material having electromagnetic shielding function, and preparation method thereof
  • Flame-retardant PVC cable insulation material or sheath material having electromagnetic shielding function, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A flame-retardant PVC cable insulation material or sheath material with electromagnetic shielding function, comprising the following raw materials in parts by weight:

[0041]

[0042] The PVC resin is a PVC resin with an average degree of polymerization of 1000.

[0043] The plasticizer is trioctyl trimellitate.

[0044] The heat stabilizer is a calcium-zinc composite heat stabilizer.

[0045] The epoxy compound is epoxy soybean oil; the elastomer is thermoplastic polyurethane elastomer.

[0046] The carbon nanotubes are single-arm carbon nanotubes whose surfaces have been acidified.

[0047] The carbon nanotubes have a diameter of 10 nm and an aspect ratio of 100.

[0048] The flame retardant is triphenyl phosphate, o-diphenylisooctyl or diphenylisodecyl phosphate.

[0049] The antioxidant is tetrakis[methylene-3,5-(di-tert-butyl-4-hydroxy-phenyl)propionate]pentaerythritol ester.

[0050] It also includes 1 part of smoke suppressant; said smoke suppressant is ...

Embodiment 2

[0056] A flame-retardant PVC cable insulation material or sheath material with electromagnetic shielding function, comprising the following raw materials in parts by weight:

[0057]

[0058]

[0059] The PVC resin is a PVC resin with an average degree of polymerization of 1300.

[0060] The plasticizer is a mixture of trioctyl trimellitate and dioctyl phthalate.

[0061] The heat stabilizer is a calcium-zinc composite heat stabilizer.

[0062] The epoxy compound is epoxy tall oleate; the elastomer is powdered nitrile rubber.

[0063] The carbon nanotubes are multi-walled carbon nanotubes whose surfaces have been acidified.

[0064] The carbon nanotubes have a diameter of 20 nm and an aspect ratio of 200.

[0065] The flame retardant is chlorinated paraffin-52, chlorinated paraffin-70 or chlorinated paraffin-42.

[0066] The antioxidant is N,N'-bis[[3-(3,5)-di-tert-butyl-4-hydroxyphenyl]propionyl]hexamethylenediamine.

[0067] Also includes 3 parts of smoke suppress...

Embodiment 3

[0073] A flame-retardant PVC cable insulation material or sheath material with electromagnetic shielding function, comprising the following raw materials in parts by weight:

[0074]

[0075]

[0076] The PVC resin is a PVC resin with an average degree of polymerization of 1500.

[0077] The plasticizer is a mixture of trioctyl trimellitate and dioctyl terephthalate.

[0078] The heat stabilizer is a calcium-zinc composite heat stabilizer.

[0079] The epoxy compound is epoxy tetrahydrophthalate di(2-ethylhexyl) ester; the elastomer is acrylic elastomer.

[0080] The carbon nanotubes are single-arm carbon nanotubes whose surfaces have been acidified.

[0081] The carbon nanotubes have a diameter of 50 nm and an aspect ratio of 500.

[0082] The flame retardant is bis(hexachlorocyclopentadiene) cyclooctane or antimony trioxide.

[0083] The antioxidant is tris[2,4-di-tert-butylphenyl]phosphite.

[0084] Also includes 5 parts of smoke suppressant; said smoke suppressa...

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Abstract

The invention relates to the technical field of cable materials, and concretely relates to a flame-retardant PVC cable insulation material or sheath material having an electromagnetic shielding function, and a preparation method thereof. The PVC cable insulation material or sheath material comprises, by weight, 80-120 parts of PVC resin, 50-90 parts of a plasticizer, 5-15 parts of a heat stabilizer, 3-10 parts of an epoxy compound, 5-10 parts of an elastomer, 10-20 parts of carbon nanotubes, 10-20 parts of a flame retardant and 0.1-2 parts of an antioxidant. The PVC cable insulation material or sheath material has the electromagnetic shielding function, has a shielding efficiency SE value reaching 17-50 db, and has a flame retardation effect, a result of the single-filament vertical burning test shows that the flame retardation level reaches V0 level, the material has a strength, has a tensile strength reaching 24 MPa or more, and has a good flexibility, a high elongation at break reaching 220% or more and excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a flame-retardant PVC cable insulation material or sheath material with electromagnetic shielding function and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price and wide source of raw materials; but also There are the following disadvantages: 1. The toughness is poor, and it is easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decom...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L75/04C08L9/02C08L91/06C08K13/06C08K3/04C08K5/523C08K5/12C08L33/00C08K5/02C08L75/06C08L91/00C08K3/24C08K3/38C08L75/08C08K3/22C08K3/32H01B3/44
CPCC08K2003/2224C08K2003/2227C08K2003/323C08K2003/387C08K2201/014C08L27/06C08L2201/02C08L2203/202C08L2205/03H01B3/443C08L75/04C08K13/06C08K3/041C08K5/523C08K5/12C08L9/02C08L33/00C08K3/2279C08K5/02C08L75/06C08L91/00C08K3/24C08K3/38C08L75/08C08K3/22C08K3/32
Inventor 李同兵黄有为刘悦钟荣栋
Owner ADVANCED THERMOPLASTIC POLYMER TECH
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