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Heat-conducting halogen-free flame-retardant polyolefin composite material as well as preparation method and application thereof

A composite material and polyolefin technology, which is applied in the field of thermally conductive halogen-free flame retardant polyolefin composite material and its preparation, can solve the problems of affecting mechanical properties, limiting application, softening and deformation of polyolefin, etc.

Pending Publication Date: 2022-04-05
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of polyolefin material is its low thermal conductivity, which limits its application in some high energy density or high heat flux working environments
Because in a high energy density or high heat flow working environment, if the heat of the equipment is not exported or cooled in time, a high temperature (>80°C) will be generated in the system, which will cause the polyolefin to soften and deform, thereby affecting its intrinsic mechanical properties

Method used

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  • Heat-conducting halogen-free flame-retardant polyolefin composite material as well as preparation method and application thereof
  • Heat-conducting halogen-free flame-retardant polyolefin composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh the following parts by weight, 34 parts of polypropylene K8003, 20 parts of polyethylene HDPE-8008, 34 parts of halogen-free intumescent flame retardant HP-2500S, 5 parts of cubic boron nitride, 5 parts of graphene oxide, Put 0.2 part of antioxidant 1010, 0.4 part of antioxidant 168, 0.3 part of compatibilizer KH550, 0.5 part of dispersant E525 and 0.3 part of calcium stearate in a high-speed mixer and mix for 5 minutes to obtain a mixture;

[0031] (2) Put the mixture into a twin-screw extruder for melt blending extrusion, traction, and granulation to obtain a heat-conducting halogen-free flame-retardant polyolefin composite material. Wherein the aspect ratio of the extruder is 40, the extruder barrel temperature is 170°C, 180°C, 185°C, 190°C, 190°C, 195°C, and the fixed main screw speed is 180 rpm.

Embodiment 2

[0033] (1) Weigh the following parts by weight, 62 parts of polypropylene K8003, 10 parts of polyethylene HDPE-8008, 24 parts of halogen-free intumescent flame retardant HP-2500S, 1 part of cubic boron nitride, 1 part of graphene oxide, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.1 part of compatibilizer KH550, 0.1 part of dispersant E525 and 0.1 part of calcium stearate were placed in a high-speed mixer and mixed for 5 minutes to obtain a mixture;

[0034] (2) Put the mixture into a twin-screw extruder for melt blending extrusion, traction, and granulation to obtain a heat-conducting halogen-free flame-retardant polyolefin composite material. Wherein the aspect ratio of the extruder is 40, the extruder barrel temperature is 170°C, 180°C, 185°C, 190°C, 190°C, 195°C, and the fixed main screw speed is 180 rpm.

Embodiment 3

[0036] (1) Weigh the following parts by weight, 48 parts of polypropylene K8003, 15 parts of polyethylene LLDPE-7042, 29 parts of halogen-free intumescent flame retardant HP-2500S, 3 parts of cubic boron nitride, 3 parts of graphene oxide, Put 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.2 part of compatibilizer KH550, 0.3 part of dispersant E525 and 0.2 part of calcium stearate into a high-speed mixer and mix for 5 minutes to obtain a mixture;

[0037] (2) Put the mixture into a twin-screw extruder for melt blending extrusion, traction, and granulation to obtain a heat-conducting halogen-free flame-retardant polyolefin composite material. Wherein the aspect ratio of the extruder is 40, the extruder barrel temperature is 170°C, 180°C, 185°C, 190°C, 190°C, 195°C, and the fixed main screw speed is 180 rpm.

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Abstract

The invention discloses a heat-conducting halogen-free flame-retardant polyolefin composite material as well as a preparation method and application thereof. The composite material is prepared from the following components in parts by weight: 34 to 62 parts of polypropylene, 10 to 20 parts of polyethylene, 24 to 34 parts of a halogen-free flame retardant, 1 to 5 parts of cubic boron nitride, 1 to 5 parts of graphene oxide, 0.2 to 0.6 part of an antioxidant, 0.1 to 0.3 part of a compatilizer, 0.2 to 0.5 part of a dispersing agent and 0.1 to 0.3 part of a lubricating agent. The graphene oxide and the nanoscale cubic boron nitride are added into the composite material, so that the heat conductivity coefficient of the material is improved while the hardness of the material is ensured; under the heating condition of the composite material, the halogen-free intumescent flame retardant can release NH3 gas, so that the oxygen concentration in the material can be diluted, and the effect of quickly retarding flame is achieved. The composite material prepared by the invention can be widely applied to related products such as electric vehicle battery modules, motor electric control, charging pile insulation and heat dissipation and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a heat-conducting halogen-free flame-retardant polyolefin composite material and a preparation method and application thereof. Background technique [0002] With the development of electric vehicles and energy batteries, the market demand for high thermal conductivity insulating materials and filled high thermal conductivity materials is increasing. [0003] As a conventional polymer material, polyolefin has been widely used in many projects because of its high corrosion resistance and wear resistance, low density and universality, especially as the inner and outer lining of industrial equipment and batteries. grinding material. The disadvantage of polyolefin materials is its low thermal conductivity, which limits its application in some high energy density or high heat flux working environments. Because in a high energy density or high heat flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L23/06C08K13/04C08K3/38C08K7/00C08K3/04C08L23/08
Inventor 杨桂生王华邵灵芝梁娜宋伟华
Owner HEFEI GENIUS NEW MATERIALS