CN105985641A - Nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material - Google Patents
Nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material Download PDFInfo
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- CN105985641A CN105985641A CN201610009194.0A CN201610009194A CN105985641A CN 105985641 A CN105985641 A CN 105985641A CN 201610009194 A CN201610009194 A CN 201610009194A CN 105985641 A CN105985641 A CN 105985641A
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- Prior art keywords
- polyphenylene sulfide
- lanthanum oxide
- nano lanthanum
- talcum powder
- oxide modified
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Silicates, Zeolites, And Molecular Sieves (AREA)
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Abstract
The invention discloses a nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material for LED. After the composite material is modified by nano lanthanum oxide at high temperature, talcum powder is used as toughening and reinforcing packing, stearic acid is mixed to the surface of the talcum powder, the modified composite packing and polyphenylene sulfide are compatible well, agglomeration of small-grain-size particles is improved effectively, the small-grain-size particles can be uniformly dispersed in macromolecules, stable and efficient modification effect is achieved, processing property and mechanical property of the polyphenylene sulfide are improved effectively, added nano copper and carbon nano tube composite heat conduction packing are adsorbed and combined to master batches well, heat conduction property of the composite material is improved effectively, strength and plasticity of the material are improved, 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 talc powder
Strengthen 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 modified talc
Powder 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 talc powder strengthens polyphenylene sulfide ether heat sink material, and this composite plastic is by following weight
Part raw material make: CNT 5-6, Pulvis Talci 4-5, Nanometer Copper 1-2, Zirconium tetrafluoride. 0.1-0.2, nano lanthanum oxide 0.1-0.2,
Polyphenylene sulfide 50-60, silane coupler 0.4-0.5, calcium zinc stabilizer 1-2, stearic acid 0.5-0.6, dehydrated alcohol 8-10, go from
Sub-water is appropriate.
Described a kind of LED nano lanthanum oxide modified talc powder strengthens polyphenylene sulfide ether heat sink material and preparation side thereof
Method, described preparation method is:
(1) first nano lanthanum oxide, Pulvis Talci, deionized water are put in high-energy mills, be fully ground mixing 40-50min, grind
Mixed material is fully dried removing moisture, at nitrogen after being mixed homogeneously with Zirconium tetrafluoride. by gained composite granule subsequently after terminating by mill
Being heated to 550-600 DEG C with the heating rate of 15-20 DEG C under atmosphere, insulation calcining 2-3h, calcining naturally cools to room after terminating
Temperature, obtains nano lanthanum oxide modified talc powder composite granule, is mixed with stearic acid, dehydrated alcohol by this powder body, and water-bath adds
Heat, to 70-80 DEG C, is completely dried removing ethanol after mixed at high speed stirring 1.5-2h, and 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 Nanometer Copper, CNT and silane coupler mixing and stirring with modified polyphenyl thioether master batch and other remain
Remaining composition puts in high-speed mixer together and is uniformly mixed, and again puts into and extrudes pelletizing in double screw extruder, obtains institute
State composite.
The invention have the advantage that the present invention fills out using Pulvis Talci after nano lanthanum oxide is high temperature modified as toughened and reinforced
Material, and stearic acid is blended on its surface, modified compounded mix is good with the compatibility of polyphenylene sulfide, reunites between small particle particle
Phenomenon is effectively improved, and can be uniformly dispersed in macromolecule, reaches the modified effect of stability and high efficiency, effectively raises polyphenyl
The absorption associativity of the processing characteristics of thioether and mechanical property, the Nanometer Copper of addition, CNT composite heat-conducting filler and masterbatch
Good, effectively raise the heat conductivity of composite, improve the strength of materials and plasticity, prepare mechanical property and heat conductivility
The best composite, 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: CNT 5, Pulvis Talci 4, Nanometer Copper 1, fluorine
Change zirconium 0.1, nano lanthanum oxide 0.1, polyphenylene sulfide 50, silane coupler 0.4, calcium zinc stabilizer 1, stearic acid 0.5, dehydrated alcohol
8, deionized water is appropriate.
The preparation method of this composite is:
(1) first nano lanthanum oxide, Pulvis Talci, deionized water are put in high-energy mills, be fully ground mixing 40min, grind
After end, mixed material is fully dried and removes moisture, in blanket of nitrogen after being mixed homogeneously with Zirconium tetrafluoride. by gained composite granule subsequently
Being heated to 550 DEG C with the heating rate of 15 DEG C under enclosing, insulation calcining 2h, calcining naturally cools to room temperature after terminating, obtains nano oxygen
Change lanthanum modified talc powder composite granule, the most again this powder body is mixed with stearic acid, dehydrated alcohol, heating in water bath to 70 DEG C, high
Being completely dried removing ethanol after speed mix and blend 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 Nanometer Copper, CNT and silane coupler mixing and stirring with modified polyphenyl thioether master batch and other remain
Remaining composition puts in high-speed mixer together and is uniformly mixed, and again puts into and extrudes pelletizing in double screw extruder, obtains institute
State composite.
The performance test results of the composite heat conducting material obtained by the present embodiment is:
| Project | Index |
| Hot strength (MPa) | 163 |
| Bending strength (MPa) | 372 |
| Thermal conductivity (w/mk) | 9.0 |
| Flame retardant rating | UL94-V0 |
| Specific insulation (Ω .cm) | ＞ 1013 |
Claims (2)
1. a LED nano lanthanum oxide modified talc powder strengthens polyphenylene sulfide ether heat sink material, it is characterised in that this composite plastic
Material is made up of the raw material of following weight portion: CNT 5-6, Pulvis Talci 4-5, Nanometer Copper 1-2, Zirconium tetrafluoride. 0.1-0.2, nano oxygen
Change lanthanum 0.1-0.2, polyphenylene sulfide 50-60, silane coupler 0.4-0.5, calcium zinc stabilizer 1-2, stearic acid 0.5-0.6, anhydrous
Ethanol 8-10, deionized water are appropriate.
2. LED as claimed in claim 1 a kind of with nano lanthanum oxide modified talc powder strengthen polyphenylene sulfide ether heat sink material and
Its preparation method, it is characterised in that described preparation method is:
(1) first nano lanthanum oxide, Pulvis Talci, deionized water are put in high-energy mills, be fully ground mixing 40-50min, grind
Mixed material is fully dried removing moisture, at nitrogen after being mixed homogeneously with Zirconium tetrafluoride. by gained composite granule subsequently after terminating by mill
Being heated to 550-600 DEG C with the heating rate of 15-20 DEG C under atmosphere, insulation calcining 2-3h, calcining naturally cools to room after terminating
Temperature, obtains nano lanthanum oxide modified talc powder composite granule, is mixed with stearic acid, dehydrated alcohol by this powder body, and water-bath adds
Heat, to 70-80 DEG C, is completely dried removing ethanol after mixed at high speed stirring 1.5-2h, and 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 Nanometer Copper, CNT and silane coupler mixing and stirring with modified polyphenyl thioether master batch and other remain
Remaining composition puts in high-speed mixer together and is uniformly mixed, and again puts into and extrudes pelletizing in double screw extruder, obtains institute
State composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009194.0A CN105985641A (en) | 2016-01-07 | 2016-01-07 | Nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009194.0A CN105985641A (en) | 2016-01-07 | 2016-01-07 | Nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material |
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| Publication Number | Publication Date |
|---|---|
| CN105985641A true CN105985641A (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610009194.0A Pending CN105985641A (en) | 2016-01-07 | 2016-01-07 | Nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material for LED and preparation method of nano lanthanum oxide modified talcum powder enhanced polyphenylene sulfide-based heat dissipating material |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2016
- 2016-01-07 CN CN201610009194.0A patent/CN105985641A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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