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A kind of high strength and high thermal conductivity nylon composite material and preparation method thereof

A nylon composite material, high thermal conductivity technology, applied in the field of high strength and high thermal conductivity nylon composite material and its preparation, can solve the problems of graphene and carbon nanotubes with small particle size, difficult to achieve dispersion and easy agglomeration by melt blending, and achieve interface Strong interaction force, improving mechanical properties and thermal stability, and reducing the effect of interface thermal resistance

Active Publication Date: 2022-06-21
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Carbon materials such as graphene and carbon nanotubes have excellent thermal conductivity and electrical conductivity, but the particle size of graphene and carbon nanotubes is small and easy to agglomerate, so it is difficult to achieve good dispersion by simple melt blending

Method used

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  • A kind of high strength and high thermal conductivity nylon composite material and preparation method thereof
  • A kind of high strength and high thermal conductivity nylon composite material and preparation method thereof
  • A kind of high strength and high thermal conductivity nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1.5kg nylon 66, 450g spherical alumina, 7.5g silicone powder, 3g antioxidant 1098, 3g antioxidant 626 were vacuum-dried at 85°C for 12h, extruded through twin-screw granules, and then injection-molded into mechanical splines and discs.

[0048] The temperature of each zone of the extruder: Zone 1: 260℃, Zone 2: 265℃, Zone 3: 270℃, Zone 4: 275℃, Zone 5: 280℃, Zone 6: 280℃, Zone 7: 275℃, Zone 8 : 270℃, Zone 9: 270℃, Zone 10: 275℃. The specific performance is shown in Table 2.

Embodiment 2

[0050] 1.35kg nylon 66, 150g graphene nylon 6 masterbatch, 450g spherical alumina, 7.5g silicone powder, 3g antioxidant 1098, 3g antioxidant 626 were vacuum-dried at 85°C for 12h, and manufactured by twin-screw extrusion. pellets, and then injection-molded mechanical splines and discs.

[0051] The temperature of each zone of the extruder: Zone 1: 260℃, Zone 2: 265℃, Zone 3: 270℃, Zone 4: 275℃, Zone 5: 280℃, Zone 6: 280℃, Zone 7: 275℃, Zone 8 : 270℃, Zone 9: 270℃, Zone 10: 275℃. The specific performance is shown in Table 2.

Embodiment 3

[0053] 1.35kg nylon 66, 150g graphene nylon 6 masterbatch, 450g spherical alumina, 150g carbon fiber, 7.5g silicone powder, 3g antioxidant 1098, 3g antioxidant 626 were vacuum-dried at 85°C for 12h, and passed through twin screw Extrusion granulation, then injection molding mechanical splines and discs.

[0054] The temperature of each zone of the extruder: Zone 1: 260℃, Zone 2: 265℃, Zone 3: 270℃, Zone 4: 275℃, Zone 5: 280℃, Zone 6: 280℃, Zone 7: 275℃, Zone 8 : 270℃, Zone 9: 270℃, Zone 10: 275℃. The specific performance is shown in Table 2.

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Abstract

The invention provides a high-strength and high-thermal-conduction nylon composite material and a preparation method thereof. The nylon composite material is composed of the following raw materials in parts by weight: 100 parts of nylon resin, 5-30 parts of carbon fiber, 10-30 parts of heat-conducting filler, dispersed 0.1-5 parts of anti-oxidant, 0.1-5 parts of antioxidant; the nylon resin is composed of 5-30% graphene nylon masterbatch and 70-95% pure nylon resin; the surface of the carbon fiber is grafted with carbon nanotubes; The invention pretreats high thermal conductivity fillers such as graphene and carbon nanotubes before melt blending, so that the fillers are well dispersed and a thermal conduction path can be constructed at a low content, thereby significantly improving the thermal conductivity of the composite material, and through the matrix Adding carbon fiber to the material improves the overall mechanical properties of the material, improves the dimensional stability, and reduces the water absorption of nylon.

Description

technical field [0001] The invention belongs to the technical field of thermally conductive materials, and in particular relates to a high-strength and high thermally conductive nylon composite material and a preparation method thereof. Background technique [0002] Thermally conductive polymer composite material is a kind of polymer composite material system with thermal conductivity, which is prepared by adding thermally conductive fillers as the matrix of polymer materials. It has attracted widespread attention due to its low cost, simple processing technology and suitability for large-scale production. [0003] Most of the thermally conductive nylons on the market are directly melt-blended with thermally conductive fillers, but it is often necessary to add more thermally conductive fillers to have a significant effect. However, excessive filler content will increase the melt viscosity, which is not conducive to industrial production and limits the application of thermal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L77/02C08K13/06C08K9/10C08K7/06C08K3/04C08K7/18C08J3/22C09K5/14
CPCC08L77/06C08J3/226C09K5/14C08J2477/02C08J2377/06C08K3/042C08L77/02C08K13/06C08K9/10C08K7/06C08K3/041C08K7/18
Inventor 吴波震杨裕豪
Owner ZHEJIANG UNIV OF TECH
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