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Preparation method for heat-conducting anti-flaming PET/PBT composite material and application thereof

A composite material and mixed material 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 dispersibility, improved dispersion performance, and safe technical problems.

Active Publication Date: 2017-11-24
LEEWAY LIGHTING PARTS XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 thermal conductive agents and flame retardants, making up for the lack of polymer properties caused by the addition of thermal conductive agents and flame retardants, so as to solve the problem of graphene dispersion in the current process of using graphene in polymers. technical problems and the safety technical problems of potential conduction hazards

Method used

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  • Preparation method for heat-conducting anti-flaming PET/PBT composite material and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0085] This embodiment provides a preparation method for conducting shell core-type activated carbon intercalation graphene, including the following procedures and steps:

[0086] Process 1: The process of preparing activated carbon intercalated graphene

[0087] Step 1: Acidify pretreatment of activated carbon with dilute nitric acid.

[0088] Step 2: adding a dispersant to the solvent and stirring evenly, then adding graphene, and ultrasonically dispersing 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 in step 2, and continue ultrasonic dispersion for 30min-3h to obtain a suspension mixture, which is washed and centrifugally filtered to obtain a prefabricated activated carbon intercalated graphene body.

[0090] Step 4: heat-treating the activated carbon intercalated graphene preform in step 3 by microwave to obtain activated carbon inter...

Embodiment 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 procedures and steps:

[0098] Step 1: batching, accurately preparing the components required for the composite material, drying PET and PBT at a temperature of 105-140° C. for 1-4 hours, and storing them for later use.

[0099] Step 2: Add heat conducting agent, flame retardant, and flame retardant synergist into a high-speed mixer, then add coupling agent for surface coupling treatment, and obtain a mixture after mixing evenly. 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: Continue to add core-shell type activated carbon intercalated graphene, PET, and PBT to the mixture in step 2 and add them to the high-speed mixer, then add lubricant and toughening...

Embodiment 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 a multi-functional, high-performance and high-practicability modified polymer.

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

[0106] The core-shell type 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. In the core-shell type activated carbon intercalation graphene, each...

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Abstract

The invention relates to a preparation method for a heat-conducting anti-flaming PET / PBT composite material. The method comprises the following steps: 1) adding a dispersing agent and graphene into a solvent and ultrasonically treating, thereby acquiring a graphene suspension, and then adding activated carbon into the suspension, continuously ultrasonic dispersing, washing and performing centrifugal suction filtration, thereby acquiring an activated carbon intercalated graphene prefab, and lastly, adopting microwave for heating the prefab, thereby acquiring activated carbon intercalated graphene powder; and 2) preparing polymeric monomer into solution by using deionized water, adding dispersing agent and ultrasonically dispersing the coupled activated carbon intercalated graphene powder, thereby acquiring an activated carbon intercalated graphene suspension; increasing the temperature to 40-90 DEG C and then adding cross-linking agent and initiator for triggering polymerization; pelletizing or crushing and drying, thereby acquiring the grained or powdered shell-core activated carbon intercalated graphene; and blending and extruding the shell-core activated carbon intercalated graphene and the components, thereby acquiring the heat-conducting anti-flaming PET / PBT composite material.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/10C08K3/04C08K7/14
Inventor 刘希荣江树恭苏长荣黄志勤
Owner LEEWAY LIGHTING PARTS XIAMEN
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