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Insulating material for earphone lines and preparation method of insulating material

A technology of insulating material and earphone cable, applied in the field of earphone, can solve the problems of low tensile strength, affect the appearance of earphone cable, affect normal use, etc., to improve elasticity and tensile strength, reduce internal defects of materials, and enhance bending resistance. effect of ability

Inactive Publication Date: 2018-08-10
HEFEI DONGHENGRUI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional earphone cable covers generally have disadvantages such as low elasticity, easy yellowing, weak copper damage resistance and low tensile strength. Since the earphone cable often needs to be folded or curled during use, after a period of use, the earphone cable The outer cover is easy to be damaged, broken, yellowed, peeled and other problems, which will expose the conductors, affect the appearance of the earphone cable, and even affect the sound quality of the earphone, affecting its normal use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment relates to an insulating material for earphone wires, including the following raw materials in parts by weight: 35 parts of polyurethane elastomer, 13 parts of polystyrene, 20 parts of modified epoxy resin, 9 parts of polypropylene resin, high-density polystyrene 7 parts of ethylene, 3 parts of N,N-dimethylformamide, 2 parts of vinyltrimethoxysilane, 1 part of paraffin, 2 parts of antimony trioxide, 2 parts of graphene oxide, 3 parts of glass fiber, antioxidant 2 parts, 1 part of UV absorber.

[0026] Wherein, the preparation method of described modified epoxy resin is as follows:

[0027] (1) In parts by weight, add 35 parts of epoxy resin to 100 parts of toluene, stir evenly, add 17 parts of bromoacetic acid, stir and react at room temperature for 18 hours, then add 100 parts of methanol, precipitate, filter and dry to obtain the material A;

[0028] (2) In parts by weight, add 13 parts of material A to 45 parts of toluene, stir evenly, add 40 parts ...

Embodiment 2

[0038] This embodiment relates to an insulating material for earphone wires, including the following raw materials in parts by weight: 55 parts of polyurethane elastomer, 18 parts of polystyrene, 30 parts of modified epoxy resin, 16 parts of polypropylene resin, high-density polystyrene 14 parts of ethylene, 5 parts of N,N-dimethylformamide, 4 parts of vinyltrimethoxysilane, 4 parts of paraffin, 3 parts of antimony trioxide, 6 parts of graphene oxide, 7 parts of glass fiber, antioxidant 3 parts, 3 parts of UV absorber.

[0039] Wherein, the preparation method of described modified epoxy resin is as follows:

[0040] (1) In parts by weight, add 35 parts of epoxy resin to 100 parts of toluene, stir evenly, add 17 parts of bromoacetic acid, stir and react at room temperature for 18 hours, then add 100 parts of methanol, precipitate, filter and dry to obtain the material A;

[0041] (2) In parts by weight, add 13 parts of material A to 45 parts of toluene, stir evenly, add 40 pa...

Embodiment 3

[0051] This embodiment relates to an insulating material for earphone wires, including the following raw materials in parts by weight: 40 parts of polyurethane elastomer, 14 parts of polystyrene, 22 parts of modified epoxy resin, 11 parts of polypropylene resin, high-density polystyrene 9 parts of ethylene, 3.5 parts of N,N-dimethylformamide, 2.7 parts of vinyltrimethoxysilane, 2 parts of paraffin, 2.1 parts of antimony trioxide, 3 parts of graphene oxide, 4 parts of glass fiber, antioxidant 2.4 parts, 1.9 parts of ultraviolet absorber.

[0052] Wherein, the preparation method of described modified epoxy resin is as follows:

[0053] (1) In parts by weight, add 35 parts of epoxy resin to 100 parts of toluene, stir evenly, add 17 parts of bromoacetic acid, stir and react at room temperature for 18 hours, then add 100 parts of methanol, precipitate, filter and dry to obtain the material A;

[0054] (2) In parts by weight, add 13 parts of material A to 45 parts of toluene, stir...

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PUM

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Abstract

The invention discloses an insulating material for earphone lines. The insulating material comprises the following raw materials in parts by weight: 35-55 parts of polyurethane elastomers, 13-18 partsof polystyrene, 20-30 parts of modified epoxy resin, 9-16 parts of polypropylene resin, 7-14 parts of high-density polyethylene, 3-5 parts of N,N-dimethyl formamide, 2-4 parts of vinyl trimethoxysilane, 1-4 parts of paraffin, 2-3 parts of diantimony trioxide, 2-6 parts of graphene oxide, 3-7 parts of glass fibers, 2-3 parts of an antioxidant and 1-3 parts of an ultraviolet absorbent. An earphoneprepared by using the insulating material for earphone lines is good in elasticity and high in flexibility, is flexible, is resistant to pull, is not easily yellowed, and has excellent sound quality.

Description

technical field [0001] The invention belongs to the technical field of earphones, and in particular relates to an insulating material used for earphone wires and a preparation method thereof. Background technique [0002] The traditional earphone cable covers generally have disadvantages such as low elasticity, easy yellowing, weak copper damage resistance and low tensile strength. Since the earphone cable often needs to be folded or curled during use, after a period of use, the earphone cable The outer cover is easy to be damaged, broken, yellowed, peeled and other problems, so that the conductors are exposed, affecting the appearance of the earphone cable, and even affecting the sound quality of the earphone, affecting its normal use. Moreover, the texture of the outer cover of the headphone cable is an important condition for the quality of the headphone cable. Contents of the invention [0003] The invention provides an insulating material for earphone wires and a pre...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L25/06C08L63/00C08L23/12C08L23/06C08L91/06C08K13/06C08K9/10C08K7/14C08K3/04C08K5/5425C08K3/22
CPCC08L75/04C08L2205/035C08L2207/062C08L25/06C08L63/00C08L23/12C08L23/06C08L91/06C08K13/06C08K9/10C08K7/14C08K3/042C08K5/5425C08K3/2279
Inventor 齐慧
Owner HEFEI DONGHENGRUI ELECTRONICS TECH CO LTD
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