CN105985640A - Nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material - Google Patents
Nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material Download PDFInfo
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- CN105985640A CN105985640A CN201610009191.7A CN201610009191A CN105985640A CN 105985640 A CN105985640 A CN 105985640A CN 201610009191 A CN201610009191 A CN 201610009191A CN 105985640 A CN105985640 A CN 105985640A
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- Prior art keywords
- lanthanum oxide
- polyphenylene sulfide
- nano lanthanum
- led
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material for LED. After the composite material is modified by nano lanthanum oxide at high temperature, sepiolite fibers are used as toughening and reinforcing packing, stearic acid is mixed to the surface of the sepiolite fibers, the modified composite packing and polyphenylene sulfide are compatible well, the modified sepiolite fibers are good in dispersibility and thermal stability, processing property and mechanical property of the sepiolite fiber are improved effectively, prepared composite modified master batches are well combined to heat conduction packing, the utilization rate of the heat conduction packing is high, and the composite material with good mechanical property and good heat conduction property is prepared and has wide application space in the aspect of LED packaging.
Description
Technical field
The present invention relates to heat-conducting plastic preparing technical field, particularly relate to a kind of LED nano lanthanum oxide modified meerschaum
Fiber reinforcement polyphenylene sulfide ether heat sink material and preparation method thereof.
Background technology
LED, as the novel light source of a generation, has efficiently, energy-saving and environmental protection, length in service life, is easily maintained etc. advantage,
Operating temperature tool by the pre-third generation light source being may replace electric filament lamp and fluorescent lamp, the light extraction efficiency of LED and life-span with chip
Having direct relation, heat dissipation problem is to limit encapsulation LED product to improve power and the subject matter of luminous efficiency, solves LED and dissipates
The effective means of heat problem is exactly to utilize high heat conduction, high insulation, the material of high permeability quickly to be passed by heat.
The heat sink material that LED encapsulation at present is commonly used is mainly metal aluminium or ceramic material, and these materials are in actually used process
In all there are some defects, although such as aluminum base heat sink material has the most excellent heat-sinking capability, but there is moulding process in it
Cycle length, itself there is electric conductivity and the problem such as moulding is single, although and ceramic material insulation, but than great, molding difficulty
Height, is unfavorable for batch production, and its application is also restrained.
Polyphenylene sulfide is a kind of crystallinity, thermoplastic special engineering plastic, and its combination property is superior, has excellent heat-resisting
Property, insulating properties, corrosion resistance, good stability of the dimension etc. advantage, it is especially suitable as the encapsulating plastics of LED lamp, improve
Its heat conductivity is it is critical that a link, and the common method improving polyphenylene sulfide plastic heat conductivity is to blend in the plastic
High conduction powder, however the most generally exist plastic substrate intensity reduce, mechanical property weaken, heat-conducting effect the best
Etc. problem, application is restricted, and along with the development on a large scale of high-power LED lamp, industry is badly in need of improving existing technique, in order to
Obtain the composite of the heat-conducting effect with efficient stable.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of LED nano lanthanum oxide modification Hai Pao
Mineral wool strengthens polyphenylene sulfide ether heat sink material and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of LED nano lanthanum oxide modified meerschaum fiber reinforcement polyphenylene sulfide ether heat sink material, this composite plastic is by following
The raw material of weight portion is made: paraffin 0.2-0.3, nano aluminium oxide 8-10, nano lanthanum oxide 0.1-0.2, polyphenylene sulfide 50-60,
Calcium oxide 0.1-0.2, sepiolite fibre 4-5, silane coupler 0.4-0.5, calcium zinc stabilizer 1-2, stearic acid 0.5-0.6, nothing
Water-ethanol 8-10, deionized water are appropriate.
Described a kind of LED nano lanthanum oxide modified meerschaum fiber reinforcement polyphenylene sulfide ether heat sink material and preparation thereof
Method, described preparation method is:
(1) first nano lanthanum oxide, sepiolite fibre, deionized water are put in high-energy mills, be fully ground mixing 40-
50min, grinds and mixed material is fully dried after terminating removing moisture, mixed homogeneously with calcium oxide by gained composite granule subsequently
After be heated to 450-500 DEG C with the heating rate of 15-20 DEG C under nitrogen atmosphere, insulation calcining 1-2h, calcining is natural after terminating
It is cooled to room temperature, obtains nano lanthanum oxide modified meerschaum fiber composite powder body, the most again by this powder body and stearic acid, dehydrated alcohol
Mixing, heating in water bath, to 70-80 DEG C, is completely dried removing ethanol, gained material attrition grinding after mixed at high speed stirring 1.5-2h
Standby；
(2) put in high-speed mixer together with the material that polyphenylene sulfide is prepared with step (1), put into double after being uniformly mixed
Melt blending pelletize in screw extruder, obtains modified polyphenyl thioether master batch standby；
(3) by after nano aluminium oxide and silane coupler mixing and stirring with modified polyphenyl thioether master batch and other residual components
Put in high-speed mixer together and be uniformly mixed, again put into and double screw extruder is extruded pelletizing, obtain described compound
Material.
The invention have the advantage that the present invention is using sepiolite fibre after nano lanthanum oxide is high temperature modified as toughened and reinforced
Filler, and stearic acid is blended on its surface, modified compounded mix and polyphenylene sulfide have the good compatibility, modified
Meerschaum fibre dispersibility and heat stability more preferably, effectively improve processing characteristics and the mechanical property of polyphenylene sulfide, preparation
Composite modified master batch is strong with the adhesion of heat filling, and the utilization rate of heat filling is higher, has prepared mechanical property and has led
The composite that hot property is the best, it has wide application space in terms of LED encapsulation.
Detailed description of the invention
The composite of this embodiment is made up of the raw material of following weight portion: paraffin 0.2, nano aluminium oxide 8, nano oxidized
Lanthanum 0.1, polyphenylene sulfide 50, calcium oxide 0.1, sepiolite fibre 4, silane coupler 0.4, calcium zinc stabilizer 1, stearic acid 0.5, nothing
Water-ethanol 8, deionized water are appropriate.
The preparation method of the composite of this embodiment is:
(1) first nano lanthanum oxide, sepiolite fibre, deionized water are put in high-energy mills, are fully ground mixing 40min,
Mixed material is fully dried removing moisture, at nitrogen after being mixed homogeneously with calcium oxide by gained composite granule subsequently after terminating by grinding
Atmosphere is heated to 450 DEG C with the heating rate of 15 DEG C under enclosing, and insulation calcining 1h, calcining naturally cools to room temperature after terminating, must receive
Rice lanthana modification sepiolite fibre composite granule, mixes this powder body with stearic acid, dehydrated alcohol the most again, and heating in water bath is extremely
70 DEG C, being completely dried removing ethanol after mixed at high speed stirring 1.5h, gained material attrition grinding is standby；
(2) put in high-speed mixer together with the material that polyphenylene sulfide is prepared with step (1), put into double after being uniformly mixed
Melt blending pelletize in screw extruder, obtains modified polyphenyl thioether master batch standby；
(3) by after nano aluminium oxide and silane coupler mixing and stirring with modified polyphenyl thioether master batch and other residual components
Put in high-speed mixer together and be uniformly mixed, again put into and double screw extruder is extruded pelletizing, obtain described compound
Material.
The performance test results of the composite heat conducting material obtained by the present embodiment is:
| Project | Index |
| Hot strength (MPa) | 172 |
| Bending strength (MPa) | 355 |
| Thermal conductivity (w/mk) | 8.7 |
| Flame retardant rating | UL94-V0 |
| Specific insulation (Ω .cm) | ＞ 1013 |
Claims (2)
1. a LED nano lanthanum oxide modified meerschaum fiber reinforcement polyphenylene sulfide ether heat sink material, it is characterised in that this is multiple
Close plastics to be made up of the raw material of following weight portion: paraffin 0.2-0.3, nano aluminium oxide 8-10, nano lanthanum oxide 0.1-0.2, poly-
Diphenyl sulfide 50-60, calcium oxide 0.1-0.2, sepiolite fibre 4-5, silane coupler 0.4-0.5, calcium zinc stabilizer 1-2, tristearin
Acid 0.5-0.6, dehydrated alcohol 8-10, deionized water are appropriate.
2. a kind of LED nano lanthanum oxide modified meerschaum fiber reinforcement polyphenylene sulfide ether radiative material as claimed in claim 1
Material and preparation method thereof, it is characterised in that described preparation method is:
(1) first nano lanthanum oxide, sepiolite fibre, deionized water are put in high-energy mills, be fully ground mixing 40-
50min, grinds and mixed material is fully dried after terminating removing moisture, mixed homogeneously with calcium oxide by gained composite granule subsequently
After be heated to 450-500 DEG C with the heating rate of 15-20 DEG C under nitrogen atmosphere, insulation calcining 1-2h, calcining is natural after terminating
It is cooled to room temperature, obtains nano lanthanum oxide modified meerschaum fiber composite powder body, the most again by this powder body and stearic acid, dehydrated alcohol
Mixing, heating in water bath, to 70-80 DEG C, is completely dried removing ethanol, gained material attrition grinding after mixed at high speed stirring 1.5-2h
Standby；
(2) put in high-speed mixer together with the material that polyphenylene sulfide is prepared with step (1), put into double after being uniformly mixed
Melt blending pelletize in screw extruder, obtains modified polyphenyl thioether master batch standby；
(3) by after nano aluminium oxide and silane coupler mixing and stirring with modified polyphenyl thioether master batch and other residual components
Put in high-speed mixer together and be uniformly mixed, again put into and double screw extruder is extruded pelletizing, obtain described compound
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009191.7A CN105985640A (en) | 2016-01-07 | 2016-01-07 | Nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009191.7A CN105985640A (en) | 2016-01-07 | 2016-01-07 | Nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105985640A true CN105985640A (en) | 2016-10-05 |
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| CN201610009191.7A Pending CN105985640A (en) | 2016-01-07 | 2016-01-07 | Nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified sepiolite fiber enhanced polyphenylene sulfide-based heat dissipating material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679799A (en) * | 2020-12-15 | 2021-04-20 | 湘潭海泡石科技有限公司 | Surface non-polar modification method of sepiolite mineral powder and application of sepiolite mineral powder in plastic or rubber filler |
| CN114836094A (en) * | 2022-05-10 | 2022-08-02 | 浙江华普环保材料有限公司 | Antistatic color-coated sheet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756318A (en) * | 2013-11-28 | 2014-04-30 | 芜湖跃飞新型吸音材料股份有限公司 | Ageing-resistant modified polyphenylene sulfide material for automobile plastic parts |
| CN103937252A (en) * | 2014-04-18 | 2014-07-23 | 安徽省中日农业环保科技有限公司 | Nano-graphite modified polyphenylene sulfide material applied to automobile plastic part |
| CN104385715A (en) * | 2014-11-19 | 2015-03-04 | 苏州北开生化设备有限公司 | Chemical oil storage tank bottom plate |
-
2016
- 2016-01-07 CN CN201610009191.7A patent/CN105985640A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756318A (en) * | 2013-11-28 | 2014-04-30 | 芜湖跃飞新型吸音材料股份有限公司 | Ageing-resistant modified polyphenylene sulfide material for automobile plastic parts |
| CN103937252A (en) * | 2014-04-18 | 2014-07-23 | 安徽省中日农业环保科技有限公司 | Nano-graphite modified polyphenylene sulfide material applied to automobile plastic part |
| CN104385715A (en) * | 2014-11-19 | 2015-03-04 | 苏州北开生化设备有限公司 | Chemical oil storage tank bottom plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679799A (en) * | 2020-12-15 | 2021-04-20 | 湘潭海泡石科技有限公司 | Surface non-polar modification method of sepiolite mineral powder and application of sepiolite mineral powder in plastic or rubber filler |
| CN114836094A (en) * | 2022-05-10 | 2022-08-02 | 浙江华普环保材料有限公司 | Antistatic color-coated sheet |
| CN114836094B (en) * | 2022-05-10 | 2022-12-06 | 浙江华普环保材料有限公司 | Antistatic color-coated sheet |
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Application publication date: 20161005 |
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