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Flame-retardant electromagnetic shielding thermoplastic elastomer nanometer composite material and preparation method thereof

A thermoplastic elastomer and nanocomposite material technology, applied in the field of thermoplastic elastomer materials, can solve the problems of reducing the flame retardant performance and service life of the material, affecting the electromagnetic shielding performance of the material, poor water resistance and weather resistance, etc., so as to improve the electromagnetic shielding performance. , good electrical conductivity, excellent mechanical properties

Pending Publication Date: 2019-01-22
ANGREEN DONGGUAN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electromagnetic shielding materials with the addition of halogen-free flame retardants have the following disadvantages: First, they are added in a large amount, have poor compatibility with the thermoplastic elastomer matrix, and still have a large impact on the mechanical properties and electrical conductivity of the cable material. The second is that the flame retardant components have the disadvantages of easy moisture absorption, poor water resistance and weather resistance, and osmosis and precipitation will occur after long-term use, which not only reduces the flame retardant performance and service life of the material, but also affects the electromagnetic shielding performance of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh in parts by weight 60 parts of ethylene-octene copolymer, 5 parts of maleic anhydride grafted ethylene-octene copolymer, 1.5 parts of conductive graphene and 1 part of nano-silver powder, and mix them in an internal mixer at 140°C for 10 minutes , and then add 6 parts of siloxane microencapsulated aluminum diethyl hypophosphite, 4 parts of macromolecular triazine char-forming agent, 4 parts of polyurethane microencapsulated melamine, 20 parts of superconducting carbon black, and 0.4 parts of antioxidant 300 0.4 part of antioxidant DLTP, mix and mix the components of the raw materials evenly, and then extrude and granulate in a twin-screw extruder at 150 °C to form a flame retardant electromagnetic shielding thermoplastic elastomer cable material, and then the material is made into sample for testing.

[0035] The test results show that the tensile strength of the flame-retardant electromagnetic shielding thermoplastic elastomer nanocomposite prepared in this examp...

Embodiment 2

[0037]In parts by weight, weigh 60 parts of ethylene-octene copolymer, 5 parts of maleic anhydride grafted ethylene-octene copolymer, and 1.5 parts of conductive graphene, knead in an internal mixer at 140°C for 10 minutes, then add Siloxane microencapsulated aluminum diethyl hypophosphite 6 parts, macromolecular triazine series carbon forming agent 4 parts, polyurethane microencapsulated melamine 4 parts, superconducting carbon black 20 parts, antioxidant 300 take 0.4 part, anti-oxidant Take 0.4 part of the oxygen agent DLTP, mix and knead the components of the raw materials evenly, then extrude and pelletize the flame-retardant electromagnetic shielding thermoplastic elastomer cable material in a twin-screw extruder at 150 ° C, and then make the material into a sample for testing detection.

[0038] The test results show that the flame-retardant electromagnetic shielding thermoplastic elastomer nanocomposite prepared in this example has a tensile strength of 12.3MPa, an elon...

Embodiment 3

[0040] In parts by weight, weigh 55 parts of ethylene-octene copolymer, 5 parts of maleic anhydride grafted ethylene-octene copolymer, 1.5 parts of conductive graphene and 2 parts of nano-silver powder, and mix them in an internal mixer at 140°C. Refining for 10 minutes, then add 6 parts of siloxane microencapsulated aluminum hypophosphite, 4 parts of polyurethane microencapsulated melamine cyanurate, 2 parts of siloxane microencapsulated pentaerythritol, 25 parts of superconducting carbon black, antioxidant Take 0.3 part of 300, take 0.4 part of antioxidant DLTP, mix and knead the components of the raw materials evenly, and then extrude and granulate them in a twin-screw extruder at 160°C to form a flame-retardant electromagnetic shielding thermoplastic elastomer cable material, and then The material is made into samples for testing.

[0041] The test results show that the flame-retardant electromagnetic shielding thermoplastic elastomer nanocomposite prepared in this example...

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Abstract

The invention belongs to the technical field of thermoplastic elastomer materials, and particularly relates to a flame-retardant electromagnetic shielding thermoplastic elastomer nanometer composite material, which comprises, by mass, 55-70 parts of a thermoplastic elastomer, 0.5-5 parts of electric-conductive graphene, 0-5 parts of nanometer metal silver powder, 10-15 parts of a halogen-free flame retardant, 20-25 parts of superconducting carbon black, and 0.1-1 part of an antioxidant. Compared with the material in the prior art, the material of the invention has the following characteristicsthat the compounding system of electric-conductive graphene, nanometer metal silver powder and superconducting carbon black, and the composite microencapsulated halogen-free flame retardant nitrogenand phosphorus flame retardant are used in thermoplastic elastomers so as to improve the electrical conductivity of the material, improve the electromagnetic shielding performance of the thermoplasticelastomer, and overcome the shortcomings of poor electromagnetic shielding performance, low mechanical property, easy combustion and the like of the conventional thermoplastic elastomer. The invention further discloses a preparation method of the flame-retardant electromagnetic shielding thermoplastic elastomer nanometer composite material.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic elastomer materials, and in particular relates to a flame-retardant electromagnetic shielding thermoplastic elastomer nano-composite material and a preparation method thereof. Background technique [0002] With the rapid development of the modern electronic industry, electronic appliances and radio communication are widely used, and the electromagnetic waves generated not only interfere with the normal operation of various electronic equipment, but also threaten the information security of communication equipment, and will have a great impact on human health. harm. At present, the main method to eliminate electromagnetic wave hazards is to use electromagnetic shielding materials to shield them. Electromagnetic shielding materials mainly include metal electromagnetic shielding materials, intrinsically conductive polymers and composite polymer electromagnetic shielding materials. In the appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08L23/12C08L23/06C08L23/16C08L9/06C08L53/02C08L71/12C08K3/04C08K3/08C08K9/10C08K5/5313C08K5/3492C08K3/32C08K5/06
CPCC08K2003/0806C08K2201/011C08L23/06C08L23/0815C08L23/12C08L2201/02C08L2201/22C08L51/06C08K3/04C08K3/08C08K9/10C08K5/5313C08K5/34922C08K3/32C08K5/34928C08L23/0853C08K5/06
Inventor 吴保强秦正兵熊典
Owner ANGREEN DONGGUAN NEW MATERIALS TECH
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