CN104177814B - A kind of LED lamp outer shell and preparation method thereof - Google Patents
A kind of LED lamp outer shell and preparation method thereof Download PDFInfo
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- CN104177814B CN104177814B CN201410420896.9A CN201410420896A CN104177814B CN 104177814 B CN104177814 B CN 104177814B CN 201410420896 A CN201410420896 A CN 201410420896A CN 104177814 B CN104177814 B CN 104177814B
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Abstract
This application discloses a kind of LED lamp outer shell and preparation method thereof, polyurethanes, AC, aluminium sesquioxide, polyisobutylene, Tissuemat E, stearic acid, firming agent, POE, carborundum, styrene butadiene styrene block copolymer (SBS), antioxidant, EBS, ABS, ACR and CPE is weighed, by Feedstock treating, grinding, stirring, extrusion and compression molding according to parts by weight proportioning；Product thermal conductivity 25-35W/ (m K), specific insulation 4-5 (× 1021Ω cm)；Compressive strength 180-220MPa, impact strength 25-35kJ/m2；Hot strength 65-85MPa, elongation at break 28-32%, bending strength 35-55MPa.
Description
Technical field
The application belongs to lamp outer casing preparation technology field, particularly relates to a kind of LED lamp outer shell and preparation method thereof.
Background technology
LED is light emitting diode; its basic structure is one piece of electroluminescent chip of semiconductor material; with on elargol or latex solidified to support; then chip and circuit board are connected with silver wire or gold thread; then surrounding epoxy sealing; play the effect of protection internal core, shell is finally installed, so the anti-seismic performance of LED is good.LED, light emitting diode, is the semiconductor device of a kind of solid-state that can convert electrical energy into visible ray, and it directly can be converted into light electricity.The heart of LED is the wafer of a quasiconductor, and one end of wafer is attached on a support, and one end is negative pole, and the other end connects the positive pole of power supply, makes whole wafer by epoxy encapsulation.Semiconductor wafer is made up of two parts, and a part is P-type semiconductor, and inside it, occupy an leading position in hole, and the other end is N-type semiconductor, is mainly electronics here.But time both quasiconductors couple together, between them, it is formed for a P-N junction.When electric current acts on this wafer by wire time, electronics will be pushed to P district, and in P district, electronics is with hole-recombination, then will send energy with the form of photon, here it is the principle that LED is luminous.And the color of the wavelength of light i.e. light, it is formed by the material decision of P-N junction.Luminous efficiency compares: electric filament lamp light efficiency is 12-24 lumens/watt, fluorescent lamp 50-90 lumens/watt at 10-15lm, halogen tungsten lamp light efficiency, and sodium vapor lamp 90-140 lumens/watt, most power consumption become thermal losses.LED light is imitated: can being dealt into 50-200 lumens/watt, and the monochromaticity of luminescence is good, spectrum is narrow, it is not necessary to filters, can directly send coloured visible ray.The maximum advantage of LED is exactly energy-conserving and environment-protective.The luminous efficiency of light reaches more than 100 lumens/watt, and common electric filament lamp can only achieve 40 lumens/watt, and electricity-saving lamp is also just hovered about 70 lumens/watt.So, same wattage, LED effect can brighter than electric filament lamp and electricity-saving lamp a lot.1 watt of LED brightness is equivalent to the electricity-saving lamp of about 2 watts, and 5 watts of LED power consumption in 1000 hours 5 degree, the LED life-span can reach 50,000 hours, and LED is radiationless.LED light source have use low-tension supply, power consumption less, the suitability is strong, stability is high, response time is short, environmentally safe, multicolor luminous etc. advantage, although the more existing illuminating equipment of price is expensive, it is still considered as it and will inevitably substitute existing illuminating device.
Polyurethane full name is polyurethanes, is the general designation containing the macromolecular compound repeating carbamate groups on main chain.It is to be formed by organic diisocyanate or polyisocyanates and dihydroxy or polyol addition polymerization.Polyurethane material, purposes is very wide, it is possible to replace rubber, plastics, nylon etc., for airport, hotel, building materials, automobile factory, colliery factory, cement plant, condo, villa, landscaping, colored stone art, park etc..Polyurethane full name is polyurethanes, is the general designation containing the macromolecular compound repeating carbamate groups on main chain.It is to be formed by organic diisocyanate or polyisocyanates and dihydroxy or polyol addition polymerization.In polyurethane macromolecular except carbamate, also can contain the groups such as ether, ester, urea, biuret, allophanate.The polymer that polyurethane is made up of polyisocyanates and polyether polyol or the raw material such as chain extender or cross-linking agent such as PEPA and/or small molecule polyol, polyamine or water.By feed change kind and composition, it is possible to change product form and performance thereof significantly, obtain from softness to hard final products.Polyurethane product form has soft, semi-rigid and rigid foam, elastomer, paint, adhesive, fluid sealant, synthetic leather coating resin, elastic fiber etc., is widely used in many fields such as automobile making, refrigerator manufacture, transportation, civil construction, footwear, synthetic leather, fabric, electromechanics, petrochemical industry, mining machinery, aviation, medical treatment, agricultural.Polyurethane elastomer can have higher elasticity and intensity, excellent wearability, oil resistivity, fatigue durability and anti-vibration resistance in wider hardness range, has the title of " abrasive rubber ".Though polyurethane elastomer yield in polyurethane products is little, but polyurethane elastomer has the combination property of excellence, is widely used in the industrial departments such as metallurgy, oil, automobile, ore dressing, water conservancy, weaving, printing, medical treatment, physical culture, grain processing, building.The development of Science in Future in China polyurethane industries among others market survey and investment prediction polyurethane industrial will be limited mainly by pulling of five broad aspect, i.e. All population capacities, auto industry, building energy conservation, the raising of environmental requirement and amusement and recreation industry.The Eleventh Five-Year Plan period China's PU product consumption amount, will keep the annual average rate of increase of 15%, and when the time comes, China will be global maximum PU product manufacturing and the consumer center.Last decade, China's polyurethane industries among others continues Promoting Industrial upgrading, expands specialized raw material, production scale；Greatly developing scientific and technical innovation, strengthen the research and development of safety and environmental protection production technology, environmentally friendly products substitution and energy-saving and emission-reduction, consumption reduction, resource recycling etc., capability for research and development reaches a new height；Product to becoming more meticulous, the development of functionalization, high performance, and expand application further.
LED shell is not only cover on lamp the effect in order to make light flock together, it is also possible to prevent from getting an electric shock, and protection eyes is also had effect, so can there be lamp housing on each lamp.Shell is to use plastic uptake acrylic plate, and it is very uniform to the absorption of light, so the light sent through acrylic plate is very soft, color is very pure.Requirement of shelter is not high, adopts the common materials such as general plastics, plastic cement, and with time image LED electricity-saving lamp now, the high-power aluminium type that is generally, also having part is plastics；Requirement of shelter is higher, general multiplex engineering plastic PC, also has Merlon, and acrylic etc. is unlikely to deform, high intensity, the macromolecular material of waterproof sun-proof.Now a lot of industrial lighting LED lamp are applied to the fields such as military affairs, space flight and aviation, metallurgy, mining, employing be mostly the corrosion-resistant high-strength material such as aluminium alloy, steel plate.LED has efficiently, environmental protection, life-span length feature.But the people of conventional LED is it can be seen that LED is big especially due to brightness, it is easy to make luminous energy become heat energy so that LED is awfully hot.At this moment, if LED etc. can not dispel the heat as early as possible, its life-span will greatly reduce；A lot of LED producers adopt aluminium shell to LED lamp.Aluminum shell easily dispels the heat, exquisite appearance, and weight is light and handy, and a lot of high-end electronic products all use aluminium shell.Such as the Fructus Mali pumilae notebook computer of Apple " MacPro " the high-end computer series of products full aluminium shell of employing, it is easy to laptop radiating, such computer even connects fan all without dress；LED adopts aluminum shell can increase the life-span of wick, makes LED seem attractive in appearance.But aluminum Lamp cup cost is somewhat expensive, and cost of manufacture is significantly high, Lamp cup needs to be processed with lathe.So, some high-quality, middle quality LED can adopt aluminum lamp housing；Another common LED lamp outer shell is cabinet.Owing to the cost of plastic housing is very low, the LED lamp of some low sides can adopt cabinet.But plastic housing is not easy heat radiation, during plastics heat, also easily thawing, distillation produce harmful gas.So, Europe, North America, Japan do not adopt cabinet.Due to the Some Domestic area high-volume cheap LED of demand, cabinet sales volume at home is very big.And popularizing along with humanity concept, and the composition of novel harmonious society, design high LED lamp outer shell of a kind of thermal conductivity height, hot strength height, bending strength and impact strength and preparation method thereof and be very important.
Summary of the invention
Solve the technical problem that:
The application is for above-mentioned technical problem, it is provided that a kind of LED lamp outer shell and preparation method thereof, solves the technical problems such as existing LED lamp outer shell thermal conductivity, hot strength, bending strength and impact strength are low.
Technical scheme:
A kind of LED lamp outer shell, the raw materials by weight portion proportioning of described LED lamp outer shell is as follows: polyurethanes 100 parts；AC15-35 part；Aluminium sesquioxide 20-30 part；Polyisobutylene 40-50 part；Tissuemat E 1-5 part；Stearic acid 5-25 part；Firming agent 2-4 part；POE10-30 part；Carborundum 35-45 part；Styrene butadiene styrene block copolymer (SBS) is 5-15 part；Antioxidant 1-3 part；EBS is 1-5 part；ABS30-40 part；ACR4-8 part；CPE15-25 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described LED lamp outer shell is as follows: polyurethanes 100 parts；AC20-30 part；Aluminium sesquioxide 22-28 part；Polyisobutylene 44-46 part；Tissuemat E 2-4 part；Stearic acid 10-20 part；Firming agent 2.5-3.5 part；POE15-25 part；Carborundum 36-44 part；Styrene butadiene styrene block copolymer (SBS) is 9-11 part；Antioxidant 1.5-2.5 part；EBS is 2-4 part；ABS33-37 part；ACR5-7 part；CPE18-22 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described LED lamp outer shell is as follows: polyurethanes 100 parts；AC25 part；Aluminium sesquioxide 25 parts；Polyisobutylene 45 parts；Tissuemat E 3 parts；Stearic acid 15 parts；3 parts of firming agent；POE20 part；Carborundum 40 parts；Styrene butadiene styrene block copolymer (SBS) is 10 parts；2 parts of antioxidant；EBS is 3 parts；ABS35 part；ACR6 part；CPE20 part.
As a preferred technical solution of the present invention: described firming agent adopts p-phenolsulfonic acid or diethylenetriamine.
As a preferred technical solution of the present invention: described antioxidant adopts triphenyl phosphite or antioxidant BHT.
As a preferred technical solution of the present invention: the preparation method of described LED lamp outer shell, comprise the steps:
The first step: weigh polyurethanes, AC, aluminium sesquioxide, polyisobutylene, Tissuemat E, stearic acid, firming agent, POE, carborundum, styrene butadiene styrene block copolymer (SBS), antioxidant, EBS, ABS, ACR and CPE according to parts by weight proportioning；
Second step: carborundum oxidized surface under 400-450 DEG C of high temperature is processed 2-3h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 10-30min, put in reactor and be subsequently adding surplus stock, heating is to 200-220 degree Celsius, stirring 40-60min, is cooled to 40-50 DEG C；
3rd step: the material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；
4th step: compression molding, temperature 150-170 DEG C, pressure 13-15MPa, time 30-50min.
Beneficial effect:
A kind of LED lamp outer shell of the present invention and preparation method thereof adopts above technical scheme compared with prior art, has following technical effect that 1, product thermal conductivity 25-35W/ (m K), specific insulation 4-5 (× 1021Ω cm)；2, compressive strength 180-220MPa, impact strength 25-35kJ/m2；3, hot strength 65-85MPa, elongation at break 28-32%；4, bending strength 35-55MPa, it is possible to current material is replaced in the widespread production not division of history into periods.
Detailed description of the invention
Embodiment 1:
Polyurethanes 100 parts is weighed according to parts by weight proportioning；AC15 part；Aluminium sesquioxide 20 parts；Polyisobutylene 40 parts；Tissuemat E 1 part；Stearic acid 5 parts；Diethylenetriamine 2 parts；POE10 part；Carborundum 35 parts；Styrene butadiene styrene block copolymer (SBS) is 5 parts；Triphenyl phosphite 1 part；EBS is 1 part；ABS30 part；ACR4 part；CPE15 part.
Carborundum oxidized surface under 400 DEG C of high temperature is processed 2h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 10min, putting into and be subsequently adding surplus stock in reactor, heating is to 200 degrees Celsius, stirring 40min, is cooled to 40 DEG C.
Material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；Compression molding, temperature 150 DEG C, pressure 13MPa, time 30min.
Product thermal conductivity 25W/ (m K), specific insulation 4 (× 1021Ω cm)；Compressive strength 180MPa, impact strength 25kJ/m2；Hot strength 65MPa, elongation at break 28%, bending strength 35MPa.
Embodiment 2:
Polyurethanes 100 parts is weighed according to parts by weight proportioning；AC35 part；Aluminium sesquioxide 30 parts；Polyisobutylene 50 parts；Tissuemat E 5 parts；Stearic acid 25 parts；Diethylenetriamine 4 parts；POE30 part；Carborundum 45 parts；Styrene butadiene styrene block copolymer (SBS) is 15 parts；Triphenyl phosphite 3 parts；EBS is 5 parts；ABS40 part；ACR8 part；CPE25 part.
Carborundum oxidized surface under 450 DEG C of high temperature is processed 3h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 30min, putting into and be subsequently adding surplus stock in reactor, heating is to 220 degrees Celsius, stirring 60min, is cooled to 50 DEG C.
Material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；Compression molding, temperature 170 DEG C, pressure 15MPa, time 50min.
Product thermal conductivity 27W/ (m K), specific insulation 4.2 (× 1021Ω cm)；Compressive strength 190MPa, impact strength 28kJ/m2；Hot strength 70MPa, elongation at break 29%, bending strength 40MPa.
Embodiment 3:
Polyurethanes 100 parts is weighed according to parts by weight proportioning；AC20 part；Aluminium sesquioxide 22 parts；Polyisobutylene 44 parts；Tissuemat E 2 parts；Stearic acid 10 parts；P-phenolsulfonic acid 2.5 parts；POE15 part；Carborundum 36 parts；Styrene butadiene styrene block copolymer (SBS) is 9 parts；Triphenyl phosphite 1.5 parts；EBS is 2 parts；ABS33 part；ACR5 part；CPE18 part.
Carborundum oxidized surface under 410 DEG C of high temperature is processed 2h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 15min, putting into and be subsequently adding surplus stock in reactor, heating is to 205 degrees Celsius, stirring 45min, is cooled to 44 DEG C.
Material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；Compression molding, temperature 155 DEG C, pressure 135MPa, time 35min.
Product thermal conductivity 30W/ (m K), specific insulation 4.5 (× 1021Ω cm)；Compressive strength 200MPa, impact strength 30kJ/m2；Hot strength 75MPa, elongation at break 30%, bending strength 45MPa.
Embodiment 4:
Polyurethanes 100 parts is weighed according to parts by weight proportioning；AC30 part；Aluminium sesquioxide 28 parts；Polyisobutylene 46 parts；Tissuemat E 4 parts；Stearic acid 20 parts；P-phenolsulfonic acid 3.5 parts；POE25 part；Carborundum 44 parts；Styrene butadiene styrene block copolymer (SBS) is 11 parts；Antioxidant BHT 2.5 parts；EBS is 4 parts；ABS37 part；ACR7 part；CPE22 part.
Carborundum oxidized surface under 440 DEG C of high temperature is processed 3h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 25min, putting into and be subsequently adding surplus stock in reactor, heating is to 215 degrees Celsius, stirring 55min, is cooled to 48 DEG C.
Material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；Compression molding, temperature 165 DEG C, pressure 15MPa, time 45min.
Product thermal conductivity 33W/ (m K), specific insulation 4.8 (× 1021Ω cm)；Compressive strength 210MPa, impact strength 33kJ/m2；Hot strength 80MPa, elongation at break 31%, bending strength 50MPa.
Embodiment 5:
Polyurethanes 100 parts is weighed according to parts by weight proportioning；AC25 part；Aluminium sesquioxide 25 parts；Polyisobutylene 45 parts；Tissuemat E 3 parts；Stearic acid 15 parts；P-phenolsulfonic acid 3 parts；POE20 part；Carborundum 40 parts；Styrene butadiene styrene block copolymer (SBS) is 10 parts；Antioxidant BHT 2 parts；EBS is 3 parts；ABS35 part；ACR6 part；CPE20 part.
Carborundum oxidized surface under 425 DEG C of high temperature is processed 2.5h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 20min, putting into and be subsequently adding surplus stock in reactor, heating is to 210 degrees Celsius, stirring 50min, is cooled to 45 DEG C.
Material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；Compression molding, temperature 160 DEG C, pressure 14MPa, time 40min.
Product thermal conductivity 35W/ (m K), specific insulation 5 (× 1021Ω cm)；Compressive strength 220MPa, impact strength 35kJ/m2；Hot strength 85MPa, elongation at break 32%, bending strength 55MPa.
Compositions all components in above example all can be commercially available.
Above-described embodiment is only intended to present disclosure is illustrated, rather than restriction, and the therefore any change in the implication suitable with claims of the present invention and scope, all it is believed that be included in the scope of claims.
Claims (6)
1. a LED lamp outer shell, it is characterised in that the raw materials by weight portion proportioning of described LED lamp outer shell is as follows: polyurethanes 100 parts；AC15-35 part；Aluminium sesquioxide 20-30 part；Polyisobutylene 40-50 part；Tissuemat E 1-5 part；Stearic acid 5-25 part；Firming agent 2-4 part；POE10-30 part；Carborundum 35-45 part；Styrene butadiene styrene block copolymer (SBS) is 5-15 part；Antioxidant 1-3 part；EBS is 1-5 part；ABS30-40 part；ACR4-8 part；CPE15-25 part.
2. a kind of LED lamp outer shell according to claim 1, it is characterised in that described LED lamp outer shell raw materials by weight portion proportioning is as follows: polyurethanes 100 parts；AC20-30 part；Aluminium sesquioxide 22-28 part；Polyisobutylene 44-46 part；Tissuemat E 2-4 part；Stearic acid 10-20 part；Firming agent 2.5-3.5 part；POE15-25 part；Carborundum 36-44 part；Styrene butadiene styrene block copolymer (SBS) is 9-11 part；Antioxidant 1.5-2.5 part；EBS is 2-4 part；ABS33-37 part；ACR5-7 part；CPE18-22 part.
3. a kind of LED lamp outer shell according to claim 1, it is characterised in that the raw materials by weight portion proportioning of described LED lamp outer shell is as follows: polyurethanes 100 parts；AC25 part；Aluminium sesquioxide 25 parts；Polyisobutylene 45 parts；Tissuemat E 3 parts；Stearic acid 15 parts；3 parts of firming agent；POE20 part；Carborundum 40 parts；Styrene butadiene styrene block copolymer (SBS) is 10 parts；2 parts of antioxidant；EBS is 3 parts；ABS35 part；ACR6 part；CPE20 part.
4. a kind of LED lamp outer shell according to claim 1, it is characterised in that: described firming agent adopts p-phenolsulfonic acid or diethylenetriamine.
5. a kind of LED lamp outer shell according to claim 1, it is characterised in that: described antioxidant adopts triphenyl phosphite or antioxidant BHT.
6. the preparation method of LED lamp outer shell described in a claim 1, it is characterised in that comprise the steps:
The first step: weigh polyurethanes, AC, aluminium sesquioxide, polyisobutylene, Tissuemat E, stearic acid, firming agent, POE, carborundum, styrene butadiene styrene block copolymer (SBS), antioxidant, EBS, ABS, ACR and CPE according to parts by weight proportioning；
Second step: carborundum oxidized surface under 400-450 DEG C of high temperature is processed 2-3h, then with polyurethanes, AC, aluminium sesquioxide, polyisobutylene and Tissuemat E at grinding machine for grinding 10-30min, put in reactor and be subsequently adding surplus stock, heating is to 200-220 degree Celsius, stirring 40-60min, is cooled to 40-50 DEG C；
3rd step: the material after stirring is put into extrusion in double screw extruder, barrel temperature 150 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 170 DEG C, 180 DEG C and 175 DEG C；
4th step: compression molding, temperature 150-170 DEG C, pressure 13-15MPa, time 30-50min.
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| CN106188904A (en) * | 2016-09-07 | 2016-12-07 | 芜湖德鑫汽车部件有限公司 | PIB air conditioning for automobiles protects solar or lunar halo and preparation method thereof |
| CN107366854A (en) * | 2017-07-20 | 2017-11-21 | 安徽欧品光电科技有限公司 | A kind of New LED platform lamp |
| CN111303617B (en) * | 2018-12-12 | 2022-03-11 | 万华化学集团股份有限公司 | Low-density thermoplastic polyurethane elastomer particles for plastic track and products thereof |
| CN112239597A (en) * | 2019-07-19 | 2021-01-19 | 施建辉 | Flexible noise reduction pad for dice shaking device of automatic mahjong table |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518103, Guangdong, Baoan District, Fuyong Shenzhen Street (Fu Garden Road on the west side) run Heng Industrial plant 2, plant second, third, fourth and five layers Patentee after: Shenzhen Civil Explosion Photoelectric Co., Ltd. Address before: 518103, Guangdong, Baoan District, Fuyong Shenzhen Street (Fu Garden Road on the west side) run Heng Industrial plant 2, plant second, third, fourth and five layers Patentee before: UP-SHINE LIGHTING CO., LIMITED |