Wire insulation sheath material with self-repairing function and preparation method thereof

An insulating skin, self-healing technology, applied in the direction of organic insulators, insulators, plastic/resin/wax insulators, etc., can solve the problem of easy expansion of damaged surface of wire insulation skins, and achieve the effect of increasing elasticity and toughness, and repairing external damage.

Inactive Publication Date: 2021-03-02
国网山东省电力公司东营市河口区供电公司 +2
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the technical defects of lack of repairing technology specifically for wire insulation sheath damage and the technical defect that the damaged surface of wire insulation sheath is easily enlarged after partial or slight damage in the prior art, the invention provides a wire insulation sheath material with self-repairing function According to the invention and its preparation method, the insulating sheath material can automatically repair minor damage, prevent further damage to the insulating sheath of the wire, and is safer and more reliable.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 45 parts of polydimethylsiloxane to 25 parts of dimethyl sulfoxide, stir and heat to 70°C, then add 25 parts of hexamethylene diisocyanate, heat up to 110°C and react for 6 hours to obtain Polyurethane prepolymer, add 20 parts of polyvinyl chloride successively, 40 parts of chlorinated rubber, continue to react for 4 hours;

[0027] (2) Add 25 parts of 4,4'-diaminodiphenyl disulfide to the reaction system in step (1) successively, raise the temperature to 100°C and react for 8 hours;

[0028] (3) Add 15 parts of activated calcium carbonate, 15 parts of talcum powder, 15 parts of alumina and 6 parts of phosphoric acid ester to the system after the reaction in step (2), and stir at 110°C for 5 hours to obtain the wire insulation sheath material.

Embodiment 2

[0030] (1) Add 45 parts of polydimethylsiloxane to 20 parts of N,N-dimethylacetamide, stir and heat to 60°C, add 20 parts of methylene diphenyl diisocyanate, and heat up to 100°C React for 8 hours to obtain the polyurethane prepolymer, add 25 parts of polyvinyl chloride and 40 parts of chlorinated rubber successively, and continue to react for 5 hours;

[0031] (2) Add 20 parts of 4,4'-diaminodiphenyl disulfide to the system in step (1) sequentially, and raise the temperature to 110°C for 6 hours;

[0032] (3) Add 20 parts of activated calcium carbonate, 10 parts of talcum powder, 10 parts of alumina and 8 parts of phosphite to the system after the reaction in step (2), and stir at 110°C for 5 hours to obtain the wire insulation sheath material.

Embodiment 3

[0034] (1) Add 50 parts of polydimethylsiloxane to 30 parts of N,N-dimethylformamide, stir and heat to 80°C, add 20 parts of hexamethylene diisocyanate and 10 parts of toluene diisocyanate, Raise the temperature to 120°C and react for 6 hours to obtain the polyurethane prepolymer, add 15 parts of polyvinyl chloride and 30 parts of chlorinated rubber in sequence, and continue to react for 3 hours;

[0035] (2) Add 30 parts of 2,2'-dithiodiethanol to the system in step (1) successively, raise the temperature to 120°C and react for 5 hours;

[0036] (3) Add 10 parts of activated calcium carbonate, 20 parts of talcum powder, 20 parts of alumina and 5 parts of phosphoric acid ester to the system after the reaction in step (2), stir at 110°C for 5 hours to obtain the wire insulation sheath material.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a wire insulation sheath material with a self-repairing function and a preparation method of the wire insulation sheath material, and the preparation method specifically comprises the following steps: adding polydimethylsiloxane into a solvent, conducting stirring and heating, adding polyisocyanate, conducting heating for reaction to obtain a polyurethane prepolymer, adding polyvinyl chloride and chlorinated rubber, and continuously conducting reacting for 3-5 hours; and sequentially adding a disulfide bond-containing chain extender, conducting heating to 100-120 DEG C, conducting reacting for 5-8 hours, finally adding activated calcium carbonate, talcum powder, aluminum oxide and a flame retardant, and conducting stirring for 3-5 hours at the temperature of 100-120 DEG C to obtain the wire insulation sheath material. The wire insulation sheath material prepared by the invention not only has excellent properties of polyurethane and organic silicon materials, but also can complete a high-efficiency self-repairing process under mild conditions to protect internal wires from being damaged.

Description

technical field [0001] The invention belongs to the technical field of wire insulation materials, and in particular relates to a wire insulation sheath material with self-repair function and a preparation method thereof. Background technique [0002] With the development of the economy, the popularity of electrical appliances is getting higher and higher, and the use of wires is also increasing. The current wire insulation layer is mainly made of polyvinyl chloride, and it is made by adding corresponding additives. However, due to the poor heat resistance, flame retardancy and aging resistance of polyvinyl chloride, the service life of the wire is short, and the safety and reliability are poor. Therefore, in the current production process, additives of lead, barium, and cadmium will be added to PVC, and these additives containing harmful heavy metal elements will also be damaged after long-term use of the wire, thereby dissolving in the natural environment. The environment ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L27/06C08L15/02C08K13/02C08K3/26C08K3/34C08K3/22C08K5/521C08K5/524H01B3/30
CPCC08L75/04H01B3/302C08L2203/202C08K2003/265C08K2003/2227C08L2205/03C08L27/06C08L15/02C08K13/02C08K3/26C08K3/34C08K3/22C08K5/521C08K5/524
Inventor 王东峰马建江李晓东徐文凯王国宁秦小超曹宇轩曹红娟张海兰
Owner 国网山东省电力公司东营市河口区供电公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap