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Halogen-free flame-retardant heat-resistant and weather-resistant polypropylene nanocomposite insulating material for automobile wires and its preparation process

A technology of weather-resistant polypropylene and insulating materials, applied in the direction of insulated conductors, insulated cables, organic insulators, etc., can solve the problems of degraded material processing and mechanical properties, unqualified long-term insulation performance, and non-adjustable color of insulating materials, etc., to achieve wetting Excellent performance in property and dispersion peeling, promotion of synergistic flame retardancy, and environmental stress cracking resistance

Active Publication Date: 2017-07-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent ZL200610038234.0 halogen-free flame-retardant polypropylene high-speed wear-resistant insulating material for automobile primary wire uses a three-component intumescent flame retardant of the phosphorus nitrogen system. The long-term insulation performance is unqualified; Chinese patent CN102295804A is a kind of thermoplastic halogen-free flame-retardant material for automobile wires and its preparation and application. The color cannot be adjusted; Chinese patent CN104530547A is a thermoplastic low-smoke, halogen-free and highly flame-retardant material for automobile wires and its preparation method uses ethylene-vinyl acetate base material, resulting in low working temperature and adding a large amount of inorganic hydroxide Flame retardant, which deteriorates the processing and mechanical properties of the material; Chinese patent CN103172923A, a high-temperature-resistant thermoplastic flame-retardant material for automobile wires and its preparation method is an improvement of the preparation process of thermosetting materials

Method used

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  • Halogen-free flame-retardant heat-resistant and weather-resistant polypropylene nanocomposite insulating material for automobile wires and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040](1) Preparation of polypropylene nanocomposite: 100 parts of base resin polypropylene, 10 parts of compatibilizing resin, 4.0 parts of nano-inorganic compound, 0.5 part of composite antioxidant, 0.4 part of metal deactivator, 1.0 part of ultraviolet absorber, Put 1.0 parts of compound lubricant A into a high-speed mixer, stir at a speed of 430-475 rpm at room temperature for 3 minutes, and then extrude and granulate with a twin-screw extruder with a reverse thread section. The length-to-diameter ratio of the twin-screw extruder is L / D=44, and the extrusion temperature is: 110-140°C in the feeding section, 150-190°C in the compression section, and 180-175°C in the homogenizing section. Among them: the base resin is a propylene-ethylene block copolymer, the molar content of ethylene in it is 10%, MFR=2.2g / (10min, 2.16kg); the compatibilizing resin is a polypropylene maleic anhydride monomer graft, Branch monomer content is 1.0wt%; nano-inorganic compound is organically mod...

Embodiment 2

[0044] This embodiment provides a halogen-free flame-retardant, heat-resistant, and weather-resistant polypropylene nanocomposite insulation material for automobile wires. Its weight composition is as follows: 45 parts of polypropylene nanocomposite, and 55 parts of halogen-free flame-retardant masterbatch. The weight ratio of the polypropylene nanocomposite is: 100 parts of base resin polypropylene, 12 parts of compatibilizing resin, 6.0 parts of nano-inorganic compound, 0.6 part of composite antioxidant, 0.6 part of metal deactivator, and 1.5 parts of ultraviolet absorber parts, compound lubricant A 1.5 parts; base resin is propylene-ethylene block copolymer, ethylene molar content is 10%, MFR=2.2g / (10min, 2.16kg); compatibilizing resin is polypropylene maleic anhydride Monomer grafts, the content of grafted monomers is 1.2wt%; the nano-inorganic compound is organically modified montmorillonite containing modifiers dihydrogenated tallow dimethyl ammonium and siloxane 34wt% ~ ...

Embodiment 3

[0047] This embodiment provides a halogen-free flame-retardant, heat-resistant, and weather-resistant polypropylene nanocomposite insulation material for automobile wires. Its weight composition is as follows: 50 parts of polypropylene nanocomposite, and 50 parts of halogen-free flame-retardant masterbatch. The composition weight ratio of the polypropylene nanocomposite is: 100 parts of base resin polypropylene, 15 parts of compatibilizing resin, 8.0 parts of nano-inorganic compound, 1.0 part of composite antioxidant, 0.8 part of metal deactivator, and 2.0 parts of ultraviolet absorber parts, compound lubricant A 2.0 parts; base resin is propylene-ethylene block copolymer, the molar content of ethylene in it is 10%, MFR=2.2g / (10min, 2.16kg); compatibilizing resin is polypropylene maleic anhydride Monomer grafts, the content of grafted monomers is 1.5wt%; the nano-inorganic compound is organically modified montmorillonite containing modifiers dihydrogenated tallow dimethyl ammon...

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Abstract

The invention relates to a halogen-free heat-resistant weather-resistant polypropylene nano composite insulating material for an automobile wire and a preparation method thereof. The composite insulating material is prepared from 50-60 parts of polypropylene nano compounds and 50-60 parts of halogen-free flame-retardant master batches. The polypropylene nano compounds are prepared from, by weight, 100 parts of polypropylene, 10-15 parts of polypropylene polar monomer grafts, 4.0-8.0 parts of nano inorganic compounds and the like. The halogen-free flame-retardant master batches are prepared from, by weight, 100 parts of organic hydroxide, 20-30 parts of carrier resin and the like. By the adoption of the binary technology, the polypropylene nano compounds and the halogen-free flame-retardant master batches high in flame-retardant agent content are prepared, the polypropylene nano compounds and the halogen-free flame-retardant master batches are mixed, extruded and granulated through a double-screw extruding machine, and the nano composite insulating material is obtained. The material is low in cost and environmentally friendly, integrates excellent physical and mechanical performance and electric performance and good extruding processability, is suitable for insulating processing of the automobile original wire, and can be used for insulating wrapping of communication cables, logging cables and oil-submerged pump cables.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant heat-resistant and weather-resistant polypropylene nanocomposite insulation material for automobile wires and a preparation process thereof, belonging to the technical field of halogen-free flame-retardant polypropylene nanocomposite materials. Background technique [0002] Automobile wires are used in a non-sealed environment with vibration, high temperature and oil pollution, so the insulating materials need to have properties such as flame retardant, heat resistance, weather resistance and oil resistance. In the prior art, PVC is generally used as an insulating material for automotive wires, and most wires that cannot use PVC are generally distributed in high-temperature environments such as engine inner chambers, and they generally use thermosetting plastics as insulating materials. The advantage of PVC material is that it is cheap, flame retardant and easy to process, but it contains harmful ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/00C08L51/06C08L23/08C08L23/06C08L27/12C08L83/04C08K13/06C08K9/06C08K3/34C08K3/22C08K5/09C08K5/134C08K5/526C08J3/22H01B3/44H01B7/295
Inventor 张建耀钟世云
Owner TONGJI UNIV