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Insulation heat conduction polypropylene composition for light emitting diode (LED) lamp and preparation method thereof

A polypropylene composition and an insulating and heat-conducting technology are applied in the field of insulating and heat-conducting polypropylene compositions for LED lamps and the preparation thereof, and can solve the problems of low thermal conductivity, high raw material cost, poor flame retardancy and the like

Active Publication Date: 2013-08-07
傅轶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this reference document has the following disadvantages: 1. The amount of polypropylene resin is large, resulting in high cost of raw materials; 2. Tougheners and heat stabilizers must be used, and the cost of raw materials is high; 3. Improvement is only achieved by adding a small amount of nano heat conducting agent The heat dissipation effect of polypropylene resin during injection molding, but relatively speaking, the heat conduction agent fails to form a heat conduction network after molding, and the thermal conductivity is low, which cannot meet the long-term high heat conduction and high-power heat dissipation requirements of LED lighting fixtures
4. Lack of flame retardants, the product has poor flame retardancy, and cannot meet the international safety requirements of LED lighting fixtures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] An insulating and thermally conductive polypropylene composition for LED lamps in this embodiment is composed of the following raw materials by weight: 38.8% of polypropylene resin, 45% of thermally conductive agent, 11.5% of flame retardant, 3% of flame retardant synergist, Lubricant 0.5%, nucleating agent 0.2%, coupling agent 0.5%, main antioxidant 0.1%, auxiliary antioxidant 0.2%, light stabilizer 0.2%; wherein, the thermally conductive agent is magnesium hydroxide; the The flame retardant is decabromodiphenylethane, and the flame retardant synergist is antimony trioxide; the lubricant is a mixture of stearic acid and ethylene bis-stearamide in a ratio of 3:1; the The nucleating agent is nucleating agent 411; the coupling agent is silane coupling agent KH560; the main antioxidant is antioxidant 1010, and the auxiliary antioxidant is antioxidant 168; the light stabilizer is light Stabilizer UV-3853.

[0088] A preparation method of an insulating and thermally conduct...

Embodiment 2

[0091] An insulating and thermally conductive polypropylene composition for an LED lamp in this embodiment is composed of the following raw materials by weight: 27.5% of polypropylene resin, 55% of thermally conductive agent, 10.5% of flame retardant, 3% of flame retardant synergist, Lubricant 0.8%, nucleating agent 0.6%, coupling agent 1.5%, main antioxidant 0.2%, auxiliary antioxidant 0.4%, light stabilizer 0.5%; wherein, the thermally conductive agent is barium sulfate; the resistance The burning agent is decabromodiphenylethane, and the flame retardant synergist is antimony trioxide; the lubricant is a mixture of calcium stearate and ethylene bis-stearamide in a ratio of 1:1; the described lubricant is The nucleating agent is nucleating agent 411; the coupling agent is silane coupling agent KH550; the main antioxidant is antioxidant 1010, and the auxiliary antioxidant is antioxidant 627A; the light stabilizer is light A mixture of stabilizer UV-3346 and light stabilizer UV...

Embodiment 3

[0095]An insulating and thermally conductive polypropylene composition for an LED lamp in this embodiment is composed of the following raw materials by weight: 31.2% of polypropylene resin, 50% of thermally conductive agent, 12.5% ​​of flame retardant, 3.5% of flame retardant synergist, Lubricant 0.3%, nucleating agent 0.1%, coupling agent 1.5%, main antioxidant 0.3%, auxiliary antioxidant 0.5%, light stabilizer 0.1%; wherein, the thermally conductive agent is magnesium oxide and zinc oxide. A mixture compounded in a ratio of 1:1 by weight; the flame retardant is decabromodiphenylethane, and the flame retardant synergist is antimony trioxide; the lubricant is stearic acid and ethylene bis-stearyl A mixture of amides in a ratio of 2:1; the nucleating agent is a sorbitol nucleating agent; the coupling agent is a titanate coupling agent KR-TTS; the main antioxidant is an antioxidant Agent 1076, the auxiliary antioxidant is antioxidant 627A; the light stabilizer is a mixture of li...

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Abstract

The invention relates to the technical field of the preparation of polypropylene, and in particular relates to an insulation heat conduction polypropylene composition for a light emitting diode (LED) lamp. The insulation heat conduction polypropylene composition consists of the following raw materials by weight percent: 20 to 60 percent of polypropylene resin, 20 to 60 percent of heat conducting agent, 5 to 30 percent of fire retardant, 1.2 to 10 percent of fire-resisting synergist, 0.3 to 2 percent of lubricant, 0.1 to 1 percent of sorbitol nucleating agent, 0.2 to 3 percent of silane coupling agent or titanate coupling agent, 0.1 to 0.5 percent of main antioxidant, 0.1 to 0.5 percent of auxiliary antioxidant and 0.1 to 0.5 percent of light stabilizer. The flame resistance of the polypropylene composition can reach V0, the heat conduction coefficient is about 0.7, the insulation performance and the heat conduction performance are good, the heat radiation requirement of the LED illumination lamp can be met, and the insulation heat conduction polypropylene composition is suitable for extruding and molding a light emitting diode (LED) heat radiating lamp holder and has the characteristics of easiness in machining, long efficiency, high heat conduction performance.

Description

technical field [0001] The invention relates to the technical field of polypropylene material modification, in particular to an insulating and heat-conducting polypropylene composition for LED lamps and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a semi-crystalline thermoplastic. It has high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is one of the common polymer materials. Copolymer PP materials have a lower heat distortion temperature (100°C), low transparency, low gloss, and low rigidity, but have stronger impact strength, and the impact strength of PP increases with the increase of ethylene content . The Vicat softening temperature of PP is 150°C. Due to the high degree of crystallinity, this material has very good surface stiffness and scratch resistance properties. PP does not have environmental stress cracking prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12B29B9/06
Inventor 傅轶
Owner 傅轶
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