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CN-122011552-A - Aging-resistant sheath material for electronic wire and preparation method thereof

CN122011552ACN 122011552 ACN122011552 ACN 122011552ACN-122011552-A

Abstract

The invention relates to the field of sheath materials, and discloses an anti-aging sheath material for an electronic wire and a preparation method thereof, wherein the sheath material comprises low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene-octene copolymer, ethylene propylene diene monomer, triazine ring derivative, ammonium polyphosphate, modified nano silicon dioxide and an auxiliary agent; the triazine ring derivative is prepared by reacting N-butyl-2, 6-tetramethyl-4-piperidylamine with cyanuric chloride to prepare a triazine ring monosubstituted body, then reacting hydrazine hydrochloride serving as a bridging agent with the triazine ring monosubstituted body and polymerizing the triazine ring monosubstituted body with piperazine, and preparing the modified nano silicon dioxide by reacting 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride with 4-propylene oxy-2-hydroxybenzophenone and polymerizing the 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride with the 4-propylene oxy-2-hydroxybenzophenone on the surface of the nano silicon dioxide by free radical.

Inventors

  • DAI WENHUA
  • Bao Zhenyue

Assignees

  • 悦拓思光德(杭州)电子科技有限公司

Dates

Publication Date
20260512
Application Date
20260305

Claims (8)

  1. 1. The aging-resistant sheath material for the electronic wire is characterized by comprising, by weight, 50-70 parts of low-density polyethylene, 5-15 parts of ethylene-vinyl acetate copolymer, 5-10 parts of ethylene-octene copolymer, 2-5 parts of ethylene propylene diene monomer, 3-7 parts of triazine ring derivative, 4-10 parts of ammonium polyphosphate, 4-8 parts of modified nano silicon dioxide, 2.5-5 parts of dicumyl peroxide, 2-5 parts of triallyl isocyanurate, 1-2 parts of plasticizer and 0.1-0.3 part of lubricant; The triazine ring derivative is prepared by utilizing N-butyl-2, 6-tetramethyl-4-piperidylamine and cyanuric chloride to carry out nucleophilic substitution reaction to prepare a triazine ring monosubstituted body, then utilizing hydrazine hydrochloride as a bridging agent to carry out nucleophilic substitution reaction with the triazine ring monosubstituted body to prepare a triazine ring intermediate, and then utilizing the triazine ring intermediate and piperazine to carry out polymerization reaction; The modified nano silicon dioxide is prepared by preparing 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride by utilizing the reaction of thionyl chloride and 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid, then preparing a hindered phenol diphenyl ketone derivative by utilizing the acylation reaction of 4-propenyloxy-2-hydroxybenzophenone and 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride, and polymerizing the hindered phenol diphenyl ketone derivative on the surface of the nano silicon dioxide through free radicals.
  2. 2. The aging-resistant sheath material for an electronic wire according to claim 1, wherein the molar ratio of cyanuric chloride to N-butyl-2, 6-tetramethyl-4-piperidylamine is 1:1-1.1.
  3. 3. The aging resistant jacket material for an electronic wire according to claim 1, wherein the molar ratio of the triazine ring monosubstituted compound to hydrazine hydrochloride is 2:1.
  4. 4. The aging-resistant sheath material for an electronic wire according to claim 1, wherein the molar ratio of the triazine ring intermediate to piperazine is 1:1-1.3.
  5. 5. The aging-resistant sheath material for electronic wires according to claim 1, wherein the mass ratio of the nano silica to the hindered phenol benzophenone derivative is 2-4:1.
  6. 6. The aging-resistant sheath material for electronic wires according to claim 1, wherein the plasticizer is one or a combination of several of dioctyl adipate, dimethyl phthalate, dioctyl phthalate, diisodecyl phthalate.
  7. 7. The aging resistant jacket material for an electronic wire according to claim 1, wherein the lubricant is one or a combination of several of stearic acid, polyethylene wax, oxidized polyethylene wax.
  8. 8. A preparation method of the aging-resistant sheath material for the electronic wire, which is characterized by comprising the steps of weighing all the components in parts by weight, placing low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene-octene copolymer and ethylene propylene diene monomer into an internal mixer for plasticating for 2-5 minutes, adding modified nano silicon dioxide, triazine ring derivative, ammonium polyphosphate, lubricant and plasticizer, uniformly mixing, discharging at 100-110 ℃, filtering rubber, adding dicumyl peroxide and triallyl isocyanurate, discharging and cooling to obtain the aging-resistant sheath material for the electronic wire.

Description

Aging-resistant sheath material for electronic wire and preparation method thereof Technical Field The invention belongs to the technical field of sheath materials, and particularly relates to an aging-resistant sheath material for an electronic wire and a preparation method thereof. Background The electronic wire is an indispensable connecting wire in electronic and electric equipment, and with the rapid development of industries such as home appliances and other electric equipment, electronic information and automobiles, the electronic wire industry as a matched industry is extremely high in importance, wherein polyolefin has outstanding electrical performance and processability, and is a preferred material of a sheath material for the electronic wire. Polyolefins include a variety of polymeric matrices such as polyethylene, polypropylene, polyolefin elastomers, ethylene propylene diene monomer and the like, however, polyolefin has a low oxygen index, is easily ignited in air, releases a large amount of heat and smoke upon combustion, and secondly, long-term exposure of polyolefin to ultraviolet light, heat and oxygen during long-term use causes aging, resulting in spots, silver lines, cracks, frosting, chalking and gloss changes on the surface of the product, resulting in an overall decrease in mechanical, electrical and service properties of the polyolefin composite. Therefore, flame retardant and antioxidant are often required to be added to improve the flame retardance and ageing resistance of the polyolefin composite material so as to meet the market demand, and halogen flame retardant containing chlorine and bromine can effectively improve the flame retardance of the polyolefin composite material, but the halogen flame retardant can generate a large amount of harmful smoke in the combustion process, and the conventional commonly used antioxidant has relatively small molecular weight, has the defects of poor thermal stability, easiness in volatilization, easiness in migration, difficulty in dispersion and the like in the use process, so that the long-term application effect of the antioxidant is reduced. Disclosure of Invention In order to solve the defects in the background art, the invention aims to provide an anti-aging sheath material for an electronic wire and a preparation method thereof, and the synergistic effect of mechanical property, thermo-oxidative aging resistance, ultraviolet aging resistance and flame retardance is realized by adding triazine ring derivatives and modified nano silicon dioxide. The aim of the invention can be achieved by the following technical scheme: The aging-resistant sheath material for the electronic wire comprises, by weight, 50-70 parts of low-density polyethylene, 5-15 parts of ethylene-vinyl acetate copolymer, 5-10 parts of ethylene-octene copolymer, 2-5 parts of ethylene propylene diene monomer, 3-7 parts of triazine ring derivative, 4-10 parts of ammonium polyphosphate, 4-8 parts of modified nano silicon dioxide, 2.5-5 parts of dicumyl peroxide, 2-5 parts of triallyl isocyanurate, 1-2 parts of plasticizer and 0.1-0.3 part of lubricant; The triazine ring derivative is prepared by utilizing N-butyl-2, 6-tetramethyl-4-piperidylamine and cyanuric chloride to carry out nucleophilic substitution reaction to prepare a triazine ring monosubstituted body, then utilizing hydrazine hydrochloride as a bridging agent to carry out nucleophilic substitution reaction with the triazine ring monosubstituted body to prepare a triazine ring intermediate, and then utilizing the triazine ring intermediate and piperazine to carry out polymerization reaction; The modified nano silicon dioxide is prepared by preparing 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride by utilizing the reaction of thionyl chloride and 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid, then preparing a hindered phenol diphenyl ketone derivative by utilizing the acylation reaction of 4-propenyloxy-2-hydroxybenzophenone and 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride, and polymerizing the hindered phenol diphenyl ketone derivative on the surface of the nano silicon dioxide through free radicals. Preferably, the preparation method of the triazine ring derivative comprises the following steps: A. Adding dimethylbenzene into a reactor, cooling to 0-5 ℃ in an ice bath, adding cyanuric chloride, slowly dropwise adding a mixed solution of N-butyl-2, 6-tetramethyl-4-piperidylamine and dimethylbenzene under stirring, reacting for 2-3 hours after the dropwise adding is finished, then dropwise adding sodium hydroxide solution, continuing to react for 2-3 hours after the dropwise adding is finished, standing after the reaction is finished, separating out a water phase, washing with a sodium chloride solution, separating out the water phase, concentrating, cooling, filtering, washing the obtained product with frozen dimethylbenzene, and drying to obtain a triazine ring monosubstituted b