High-flow heat-conducting nylon composite material, preparation method and application thereof

A nylon composite material and high-flow technology, applied in the field of composite materials, can solve the problems of poor fluidity of nylon products, low fluidity of nylon materials, and application limitations, and achieve the effect of improving fluidity, significant technology and market value.

Inactive Publication Date: 2019-09-10
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of thermally conductive fillers can make the fluidity of nylon products worse. When the amount added is too high (higher than 50wt

Method used

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  • High-flow heat-conducting nylon composite material, preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0025] The present invention does not particularly limit the type of the antioxidant, and it can be various existing additives that can improve the antioxidant performance of nylon composite materials. According to a preferred embodiment of the present invention, the antioxidant is a composite antioxidant containing a primary antioxidant and an auxiliary antioxidant, wherein the primary antioxidant is a hindered phenolic antioxidant (for example 1010), the auxiliary antioxidant is selected from at least one of phosphite antioxidants, thiol antioxidants and thioester antioxidants. In addition, the weight ratio of the main antioxidant and the auxiliary antioxidant is preferably 1: (1 to 3).

[0026] The present invention has no particular limitation on the type of the lubricant, and it can be various existing additives that can improve the lubricating performance of nylon composites. Specific examples thereof include but are not limited to: pentaerythritol ester, butyl stearate, et...

Example Embodiment

[0031] Example 1

[0032] Weigh various raw materials according to the material ratio in Table 1, and mix nylon resin (PA6, relative viscosity of 2), thermally conductive filler (magnesium hydroxide), melamine cyanurate, and glass fiber (monofilament diameter 10-13μm and length 3 ~5mm chopped glass fiber), toughening agent (polyethylene grafted maleic anhydride (PE-MAH), polyethylene grafting rate is 0.4wt%), brightener (rutile titanium dioxide), antioxidant (Compound of 1010 and 168 according to the weight ratio of 1:2), lubricant (ethylene bisstearic acid amide) and coupling agent (KH-550) are added to a high-speed mixing pot and mixed for 3 minutes to obtain a premix. Then, the premix is ​​fed into the twin-screw extruder from the main feed port, and undergoes melt extrusion, cooling, and granulation to obtain a high-flow, thermally conductive nylon composite material. Wherein, the extrusion temperature of the twin-screw extruder is set to 200-260°C, and the rotation speed is...

Example Embodiment

[0033] Example 2

[0034] Weigh various raw materials according to the material ratio in Table 1, and mix nylon resin (PA6, relative viscosity of 2.4), thermally conductive filler (aluminum hydroxide), melamine cyanurate, and glass fiber (monofilament diameter 10-13μm and length 3 ~5mm chopped glass fiber), toughening agent (polyethylene grafted maleic anhydride (PE-MAH), polyethylene grafting rate is 1.0wt%), brightener (rutile titanium dioxide), antioxidant (Compound of 1010 and 168 according to the weight ratio of 1:2), lubricant (butyl stearate) and coupling agent (KH-560) are added to a high-speed mixing pot and mixed for 3 minutes to obtain a premix. Then, the premix is ​​fed into the twin-screw extruder from the main feed port, and undergoes melt extrusion, cooling, and granulation to obtain a high-flow, thermally conductive nylon composite material. Wherein, the extrusion temperature of the twin-screw extruder is set to 200-260°C, and the rotation speed is set to 250 rpm...

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Abstract

The invention belongs to the composite material field and discloses a high-flow heat-conducting nylon composite material, a preparation method and an application thereof. The high-flow heat-conductingnylon composite material comprises nylon resin, heat conductive filler, melamine cyanurate and optionally glass fiber, toughening agent, whitening agent, antioxidant, lubricant and coupling agent, The heat conductive filler is hydroxide, and the weight ratio of the heat conductive filler, the melamine cyanurate and the nylon resin is (0.5-2):(0.04-0.13): 1. The nylon composite material provided by the invention has the advantages of high fluidity and high thermal conductivity, and can be well applied in the fields of home appliances, lighting and the like, especially in some thin-wall products, and has remarkable technical and market value.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a high-flow heat-conducting nylon composite material and a preparation method and application thereof. Background technique [0002] Thermally conductive nylon is widely used as a heat dissipation material in the field of LED lighting due to its easy processing, low density, low cost, high thermal conductivity, and superior heat radiation performance. It is the preferred material to solve the heat dissipation problem of LED lamps. Thermally conductive nylon is to effectively improve the thermal conductivity by adding a certain amount of thermally conductive filler to the nylon resin. General thermal conductive fillers are magnesium oxide, zinc oxide, boron nitride, aluminum nitride, magnesium hydroxide, aluminum hydroxide, etc. However, the addition of thermally conductive fillers can make the fluidity of nylon products worse. When the amount added is too high (hig...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L51/06C08K5/3492C08K3/22C08K7/14C08K5/134C08K5/526C08K13/04C09K5/14
CPCC08K2003/2224C08K2003/2227C08L77/02C08L2205/20C09K5/14C08L51/06C08K5/34928C08K3/22C08K7/14C08K5/1345C08K5/526C08K13/04
Inventor 陈敏辉申应军刘凯
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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