Halogen-free intumescent flame-retardant polypropylene/ethylene vinyl acetate cable material

A technology of ethylene vinyl acetate and flame retardant polypropylene, which is used in insulated cables, cables, circuits, etc., can solve the problems of poor mechanical properties of cable materials, poor environmental stress crack resistance, and poor compatibility with polar flame retardants. , to achieve the effects of improving mechanical properties and combustion properties, improving hygroscopicity, and improving compatibility

Active Publication Date: 2010-02-17
应急管理部四川消防研究所
View PDF2 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the matrix resin is polypropylene and EPDM rubber, which have poor compatibility with polar flame retardants, and it is difficult for flame retardants to disperse in the matrix resin, resulting in poor mechanical properties and environmental stress resistance of cable materials. Poor cracking performance and poor combustion performance. Furthermore, the flame retardant uses a single ammonium polyphosphate, which has poor flame retardant effect and a large amount of flame retardant

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

[0007] Raw material components are by weight:

[0008] Polypropylene 40,

[0009] Ethylene vinyl acetate 60,

[0010] Grafting agent (maleic anhydride grafted ethylene-octene copolymer) 15,

[0011] Composite flame retardant 65,

[0012] Antioxidant (tetrakis(β3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) pentaerythritol ester) 2,

[0013] UV absorber (2-hydroxy-4-n-octyloxybenzophenone) 1,

[0014] Processing aid (polyethylene wax) 2.

[0015] in,

[0016] Composite flame retardant is by weight:

[0017] Basic flame retardant (ammonium polyphosphate: pentaerythritol: melamine=30:15:5) 50,

[0018] Flame retardant synergist (zinc borate, white microencapsulated red phosphorus) 15.

[0019] The above-mentioned raw materials are weighed and mixed by a high-speed mixer, and then melted and extruded by a twin-screw extruder, drawn, water-cooled, and pelletized. The six-stage processing temperatures of the twin-screw extruder are 155-160°C, 160-165°C, 170-175°C, 175-185...

Embodiment 2

[0021] Raw material components are by weight:

[0022] Polypropylene 30,

[0023] Ethylene vinyl acetate 70,

[0024] Composite flame retardant 57,

[0025] Grafting agent (maleic anhydride grafted polyethylene) 10,

[0026] Antioxidant (tetra(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester,

[0027] dilauryl thiodipropionate) 1,

[0028] UV absorber (2-(2'-hydroxy-3', 5-di-tert-butylphenyl) benzotriazole) 1.5,

[0029] Processing aids (polyethylene wax, calcium stearate, zinc stearate) 3.

[0030] in,

[0031] Composite flame retardant is by weight:

[0032] Basic flame retardant (polyphosphoric acid: pentaerythritol: melamine=35:10:2) 47,

[0033] Flame retardant synergist (zinc borate, white microcapsule red phosphorus, organic silicon) 10.

[0034] The above-mentioned raw materials are weighed and mixed by a high-speed mixer, and then melted and extruded by a twin-screw extruder, drawn, water-cooled, and pelletized. The six-stage processin...

Embodiment 3

[0036] Raw material components are by weight:

[0037] Polypropylene 20,

[0038] Ethylene vinyl acetate 80,

[0039] Grafting agent (maleic anhydride grafted polypropylene) 5,

[0040] Composite flame retardant 45,

[0041] Antioxidant (tetra(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester,

[0042] Tris[2.4-di-tert-butylphenyl]phosphite,

[0043] 2-hydroxy-4-n-octyloxybenzophenone) 1.5,

[0044] UV absorber (5′-di-tert-butylphenyl-5-chlorobenzotriazole) 2

[0045] Processing aids (zinc stearate, calcium stearate) 1.

[0046] in,

[0047] Composite flame retardant is by weight:

[0048] Basic flame retardant (ammonium polyphosphate: pentaerythritol: melamine=25:12:3) 40,

[0049] Flame retardant synergist (zinc borate, white microcapsule red phosphorus, nano-montmorillonite,

[0050] Silicone) 5.

[0051] The above-mentioned raw materials are weighed and mixed by a high-speed mixer, and then melted and extruded by a twin-screw extruder, drawn,...

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

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
elongation at breakaaaaaaaaaa
peak heat release rateaaaaaaaaaa
Login to view more

Abstract

The invention relates to a halogen-free intumescent flame-retardant polypropylene/ethylene vinyl acetate cable material which is characterized by comprising the following components by weight part: 20-40 parts of polypropylene, 60-80 parts of ethylene vinyl acetate, 45-65 parts of compound flame retardant, 5-15 parts of grafting agent, 1.0-2.0 parts of antioxidizer, 1.0-2.0 parts of ultraviolet absorbent and 1.0-3.0 of processing aid. With the advantages of favorable flexibility, high breakage extensibility, favorable tensile strength, excellent electrical insulating property and good flame retardant, the material favorably meets the requirements on the burning property, the mechanical property and the heat property of the cable material and is mainly used as the outer coating material ofcables.

Description

technical field [0001] The invention relates to a polymer material, in particular to an expanded halogen-free flame-retardant polypropylene / ethylene vinyl acetate cable material. Background technique [0002] Polypropylene is widely used in cable materials after being combined with other raw materials. Chinese patent CN101418102A discloses a high-temperature halogen-free flame-retardant polypropylene / EPDM cable material and a preparation method thereof. Its components include 10-25 parts by weight of polypropylene, 25-40 parts of EPDM rubber, 30-40 parts of ammonium polyphosphate, 1-3 parts of silicone, 5-20 parts of rubber oil, crosslinking agent 0.3-1.0 parts, 0.2-2.5 parts of cross-linking aids, 0.5-1.5 parts of processing aids. Among them, the matrix resin is polypropylene and EPDM rubber, which have poor compatibility with polar flame retardants, and it is difficult for flame retardants to disperse in the matrix resin, resulting in poor mechanical properties and envir...

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): C08L23/12C08L23/08C08L51/06C08K3/32C08K5/053C08K5/3492C08K3/38C08K3/02C08K9/10C08K5/54C08K3/34H01B7/295H01B3/44
Inventor 李碧英卢国建兰彬张帆阳世群张玉才
Owner 应急管理部四川消防研究所
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