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A kind of led radiator and preparation method thereof

A LED heat sink and dispersant technology, applied in lighting and heating equipment, semiconductor devices of light-emitting elements, cooling/heating devices of lighting devices, etc., can solve the problem of uneven distribution of thermal conductive fillers, non-recyclable thermosetting resins, and freedom of design The degree is not large

Active Publication Date: 2015-08-19
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thermosetting resins cannot be recycled, and there is little freedom in design; thermoplastic polymers have a relatively high viscosity, and the addition of thermally conductive fillers makes the resin system more viscous, which not only makes the distribution of thermally conductive fillers uneven, but also does not allow a large amount of thermally conductive fillers. Addition, the improvement of thermal conductivity is limited

Method used

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  • A kind of led radiator and preparation method thereof
  • A kind of led radiator and preparation method thereof
  • A kind of led radiator and preparation method thereof

Examples

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preparation example Construction

[0146] A typical method for preparing an LED heat sink of the present invention comprises the steps of:

[0147] (a) provide a raw material mixture, said mixture contains ε-caprolactam, graphite powder, catalyst, promoter, lubricant and coupling agent;

[0148] (b) polymerizing ε-caprolactam in the raw material mixture to form a molten mixture containing polyamide 6;

[0149] (c) injecting the molten mixture containing polyamide 6 into a mold for preparing the LED heat sink, thereby forming the LED heat sink by injection molding.

[0150] Wherein, the steps (a), (b) and (c) are carried out in a reaction injection molding machine.

[0151] Preferably, in step (a), ε-caprolactam, graphite powder, catalyst, co-catalyst, lubricant and coupling agent are fed into the reaction injection molding machine through a first feeder, so as to form the raw material mixture.

[0152] Preferably, in step (a), the water content of the raw material mixture is ≤2wt%, preferably 0-1wt%.

[0153...

Embodiment 1

[0185] The preparation components of the LED radiator include (wt):

[0186] ε-caprolactam 100 parts,

[0187] Model K15 graphite powder 100 parts,

[0188] Caprolactam magnesium bromide 3 parts,

[0189] 3 parts of hexamethylene-1,6-diformyl caprolactam,

[0190] 2 parts of ethylene bis stearamide,

[0191] 2 parts of antioxidant 1010 and antioxidant 168 (mass ratio 1:2),

[0192] Decabromodiphenylethane and cyanurate (MCA) (4:1) 10 parts,

[0193] 2 parts of bis(dioctyloxypyrophosphate) ethylene titanate;

[0194] The total weight of the above components is 50 kg.

[0195] The LED radiator is prepared by reaction injection molding process, including the following steps:

[0196] (1) ε-caprolactam, caprolactam magnesium bromide and hexamethylene-1,6-diformyl caprolactam were vacuum-dried at 50°C for 24 hours, K15 graphite powder was vacuum-dried at 120°C for 12 hours, and other additives were kept dry. keep their moisture content below 0.2%;

[0197] (2) The dried ε-...

Embodiment 2

[0203] The preparation components of the LED radiator include (wt):

[0204] ε-caprolactam 100 parts,

[0205] Model K15 graphite powder 60 parts,

[0206] Sodium caprolactam 5 parts,

[0207] 2.5 parts of toluene diisocyanate (TDI),

[0208] 2 parts of oleic acid amide,

[0209] 1.6 parts of antioxidant 1010 and antioxidant 168 (mass ratio 1:2),

[0210] Decabromodiphenylethane and cyanurate (MCA) (mass ratio 4:1) 10 parts,

[0211] 1.6 parts of γ-aminopropyltriethoxysilane;

[0212] The total weight of the above components is 25 kg.

[0213] The LED radiator is prepared by reaction injection molding process, including the following steps:

[0214] (1) ε-caprolactam, sodium caprolactam and toluene diisocyanate (TDI) are vacuum-dried at 50°C for 30h, K15 graphite powder is vacuum-dried at 100°C for 16h, and other additives are kept dry to keep their moisture content below 0.2% ;

[0215] (2) Add the dried ε-caprolactam, K15 graphite powder and sodium caprolactam, tolu...

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Abstract

The invention discloses a preparation method of an LED (Light-Emitting Diode) heat radiator, comprising the following steps of: (a) providing a raw material mixture, wherein the mixture contains epsilon-caprolactam, graphite powder, a catalyst, an auxiliary catalyst, a lubricant and a coupling agent; (b) polymerizing the epsilon-caprolactam in the raw material mixture to form a fused mixture containing polyamide 6; and (c) injecting the fused mixture containing the polyamide 6 into a mould for preparing the LED heat radiator so as to be injected to form the LED heat radiator. According to the preparation method, the LED heat radiator is molded by one step through reaction and injection molding from a monomer, so that a material preparation process is saved, the production efficiency is high and the energy consumption is small; and the heat radiation performance of the prepared heat radiator is excellent.

Description

technical field [0001] The invention relates to an LED radiator and a preparation method thereof, belonging to the technical field of material preparation, in particular to the preparation of a polyamide 6 resin-based heat-conducting LED radiator by one-step injection molding. Background technique [0002] As a new type of lighting source, LED light source is known as the darling of green lighting in the 21st century. It has the advantages of small size, low power consumption, long service life, high brightness, low heat, environmental protection, durability, and variety; especially Especially in landscape lighting, its low-voltage power supply has high reliability; good controllability, fast response time, can be turned on and off frequently; good flexibility, and can adapt to decorative lighting requirements of various geometric sizes and different space sizes. However, LEDs generate a lot of heat during lighting, which limits the development of LED lighting technology. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08K13/02C08K3/04C08G69/16B29C45/18B29C45/46F21V29/00F21Y101/02F21V29/85F21Y115/10
Inventor 李建广范欣愉颜春祝颖丹张笑晴李红周
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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