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Thermally conductive flame-retardant PET/PBT composite material and lamp holder body prepared therefrom

A composite material and polymer technology, applied in the field of functional material preparation, can solve problems such as hidden dangers of electrical conductivity and uneven dispersion of graphene, and achieve the effects of good dispersion, improved dispersion performance, and excellent electrical insulation protection performance.

Inactive Publication Date: 2017-12-15
LEEWAY LIGHTING PARTS XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a core-shell type activated carbon intercalated graphene with excellent thermal conductivity, flame retardancy, safety performance and dispersibility and its use in polymerized monomers. At the same time, the core-type activated carbon intercalated Layered graphene has a synergistic effect on t

Method used

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  • Thermally conductive flame-retardant PET/PBT composite material and lamp holder body prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0084] Example 1

[0085] This embodiment provides a method for preparing conductive-shell-core activated carbon intercalation graphene, which includes the following procedures and steps:

[0086] Process one: the process of preparing activated carbon intercalation graphene

[0087] Step 1: Use dilute nitric acid to acidify the activated carbon.

[0088] Step 2: Add a dispersant to the solvent and stir evenly, then add graphene, and use ultrasonic dispersion for 2-24 hours to obtain a graphene suspension. In this step, the solvent is deionized water or ethanol.

[0089] Step 3: Add 200-300 mesh activated carbon to the graphene suspension of step 2, and continue ultrasonic dispersion for 30 min-3h to obtain a suspension mixture. The suspension mixture is washed, centrifuged and filtered to obtain activated carbon intercalated graphene prefabrication body.

[0090] Step 4: The activated carbon intercalated graphene preform in step 3 is heat-treated by microwave to obtain activated carbon...

Example Embodiment

[0096] Example 2

[0097] On the basis of Example 1, this example further provides a method for preparing a thermally conductive and flame-retardant PET / PBT composite material, including the following processes and steps:

[0098] Step 1: Ingredients, accurately prepare the required components of the composite material, and dry the PET and PBT at 105-140°C for 1-4 hours for use.

[0099] Step 2: Add the heat-conducting agent, flame retardant and flame retardant synergist to the high-speed mixer, and then add the coupling agent for surface coupling treatment, and mix evenly to obtain the mixture. In this step, the coupling agent is one of aluminate coupling agent, titanate coupling agent, and silane coupling agent, or two or more coupling agents are used in combination.

[0100] Step 3: Add shell-core activated carbon intercalated graphene, PET, and PBT to the mixture of step 2 into the high-speed mixer, then add lubricant and toughening agent, and mix well.

[0101] Step 4: Add the mix...

Example Embodiment

[0103] Example 3

[0104] In order to further improve the mechanical properties, heat resistance and processing properties of PET / PBT, flame retardants, lubricants, etc. are added to the PET / PBT system to obtain modified polymers with multi-functionality, high performance and high practicality.

[0105] The thermally conductive flame-retardant PET / PBT composite material of this embodiment includes the following components and parts by weight: PET is 30%; PBT is 10%; shell-core activated carbon intercalated graphene is 0.5%; alkali-free glass fiber is 23.9% ; MgO is 23%; E wax is 0.3%; POE-g-GMA is 3%; sodium antimonate is 2%; decabromodiphenylethane is 7%; aluminate coupling agent is 0.3%. among them:

[0106] The shell-core activated carbon intercalation graphene uses activated carbon intercalation graphene as the core layer, and the cross-linked structure polymer covering and connecting the core layer is the shell layer, and each of the shell-core activated carbon intercalation gr...

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Abstract

The invention relates to a thermally conductive flame-retardant PET/PBT composite material which comprises the following components by weight: 30%-40% of PET, 5%-10% of PBT, 0.5%-2% of shell-core type activated carbon intercalated graphene, 15%-30% of glass fibers, 15%-30% of a thermal conducting agent, 0.3%-0.8% of a lubricant, 3%-5% of a toughening agent, 2%-3% of a synergistic flame retardant, 7%-10% of a flame retardant and 0.3%-1% of a processing additive, wherein the shell-core type activated carbon intercalated graphene uses activated carbon intercalated graphene as a core layer and uses crosslinked structure polymer connected with the core layer in a covering manner as a shell layer; each structural layer contains the following components by weight: 10-50% of graphene, 10-45% of activated carbon and 5-47% of crosslinked structure polymer, wherein the crosslinked structure polymer is a polymer with a three-dimensional crosslinked network structure formed by initiating, polymerizing and crosslinking a polymerized monomer, an initiator and a crosslinking agent.

Description

technical field [0001] The invention relates to the technical field of preparation of functional materials, in particular to a thermally conductive and flame-retardant PET / PBT composite material and a preparation method and application thereof. Background technique [0002] In recent years, conventional engineering plastics, including thermoplastics and thermosetting plastics, have been widely used in daily electrical appliances due to their good mechanical properties, chemical stability, and electrical insulation, such as lamp holders. Among them, polyethylene terephthalate (PET) is the most cost-effective plastic among engineering materials. PET is milky white or light yellow and is a highly crystalline polymer with a smooth and shiny surface. It has excellent physical and mechanical properties, and its long-term use temperature can reach 120 ° C. It has excellent electrical insulation. At the same time, its creep resistance, fatigue resistance and friction resistance are ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/00C08L51/06C08K13/06C08K9/10C08K7/14C08K9/02C08K9/00C08K7/00C08K3/24C08K5/03C08K5/06C08K3/22H01B3/42C09K5/14
CPCC08L67/02C08K2003/222C08K2003/2224C08K2003/2227C08K2201/003C08L2201/02C08L2203/20C08L2205/02C08L2205/025C08L2205/035C09K5/14H01B3/423C08L51/003C08K13/06C08K9/10C08K7/14C08K9/02C08K9/00C08K7/00C08K3/24C08K5/03C08K3/22C08L51/06C08K5/06
Inventor 刘希荣江树恭苏长荣黄志勤
Owner LEEWAY LIGHTING PARTS XIAMEN
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