CN102675806A - PP (polypropylene)/ expanded graphite heat conducting composite material and preparation method thereof - Google Patents
PP (polypropylene)/ expanded graphite heat conducting composite material and preparation method thereof Download PDFInfo
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- CN102675806A CN102675806A CN2012101904023A CN201210190402A CN102675806A CN 102675806 A CN102675806 A CN 102675806A CN 2012101904023 A CN2012101904023 A CN 2012101904023A CN 201210190402 A CN201210190402 A CN 201210190402A CN 102675806 A CN102675806 A CN 102675806A
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- conductive composite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an expanded graphite filled polypropylene (PP) heat conducting composite material and a preparation method thereof. According to the method, PP is used as matrix resin, expanded graphite is used as heat conducting filler, the low-temperature expanded graphite and the PP are expanded in situ and compounded in double screws, and the expanded graphite is cut by the screws to be stripped and dispersed to obtain the PP/ expanded graphite heat conducting composite material. Compared with the conventional PP/ expanded graphite composite material prepared by melt blending, the heat conducting composite material prepared by the method disclosed by the invention has the advantages that the process is simple and high filling compounding can be realized, and compared with a PP/ graphite composite material, the PP/ expanded graphite heat conducting composite material has the advantages of high coefficient of heat conductivity and good mechanical property.
Description
Technical field
The present invention relates to a kind of Vestolen PP 7052 (PP)/expanded graphite heat-conductive composite material and preparation method thereof, relate to and need heat radiation (heat conduction) applications, have the advantage of thermal conductivity height, good mechanical property, belong to polymeric material field.
Background technology
Because polymer materials has advantages such as wide material sources, with low cost, easy machine-shaping, make it be widely used, but general polymerization thing material is the heat insulation body, has limited its application in fields such as electronic packaging, chemical industry heat transfers.At present; The heat conductivility that improves polymer materials mainly contains following dual mode: the one, and synthetic have an intrinsic polymer of high thermal conductivity coefficient; Like polyacetylene, polypyrrole etc., its thermal conduction mechanism equally is the transmission that realizes heat through transfer transport with the macromolecular material electrical conduction mechanism; The 2nd, through adding high heat conduction inorganic filler polymkeric substance is filled preparation inorganics/polymkeric substance heat-conductive composite material.Though intrinsic heat conduction superpolymer has good heat-conducting, is limited by cost, production technique, is difficult to realize mass-producing, and be a kind of efficient ways with the inorganics filled thermal conductivity that improves polymkeric substance.
Graphite is a kind of naturally occurring inorganic mineral, because its special atomic structure has determined it that very high heat conduction, conductivity are arranged, is a kind of ideal heat conductive filler.Graphite can get vermiform expanded graphite through oxidation, intercalation, high temperature after expanding, because its vermiform pattern makes its filled polymer can get the higher matrix material of thermal conductivity, and (Journal of Applied Polymer Science such as Ye; 2006; Vol.101 is that filler is filled HDPE with the expanded graphite behind high temperature 3806-3810), and having prepared thermal conductivity is the HDPE/ expanded graphite matrix material of 1.59W/mK; But the melt-blending process that adopts routine prepares polymkeric substance/expanded graphite and the polymer/graphite heat-conductive composite material has following shortcoming: the one, and the specific surface area of expanded graphite is very big; Be difficult to carry out height with polymer materials and fill compoundly, during and preparation polymkeric substance/expanded graphite matrix material, it is compound with polymkeric substance again after expanding that earlier sour intercalated graphite is carried out high temperature; Complex process, cost is higher.The 2nd, nonpolar graphite surface does not contain-OH, and-COOH isopolarity group is difficult to adopt silane, titanate coupling agent etc. that it is shown processing, causes graphite particle serious agglomeration in polymeric matrix, and thermal conductivity is low, matrix material machinery poor performance.Pottery state very wait (Chinese plastics, 2004, Vol.18, No.11,32-35) research is with the mechanical property of the graphite-filled PP matrix material of titanate coupling agent surface-treated, the shock strength of matrix material descends rapidly with the increase of content of graphite.
Summary of the invention
The present invention is directed to above defective; Aim to provide a kind of PP/ expanded graphite heat-conductive composite material and preparation method thereof; Be characterized in the expandable graphite at low-temperature being heat conductive filler, expansible black lead is peeled off with heat expansion, the screw rod shearing of extrusion, and expanded graphite is dispersed in the polypropylene matrix; Through a step machine-shaping, preparation PP/ expanded graphite heat-conductive composite material.
The recipe ingredient of PP/ expanded graphite heat-conductive composite material of the present invention is according to the mass fraction:
100 parts of Vestolen PP 7052
60 ~ 150 parts of expansible black leads
0.5 ~ 2 part in oxidation inhibitor
0.5 ~ 2 part of processing aid
Described Vestolen PP 7052 is a block copolymerization polypropylene.
Described expansible black lead is the expandable graphite at low-temperature of nitric acid oxidation, perchloric acid intercalation, and initial expansion temperature is 180 ℃ ~ 210 ℃.
Described oxidation inhibitor is primary antioxidant and auxiliary anti-oxidant, and primary antioxidant is 1010 of a phenols, and auxiliary anti-oxidant is phosphorous acid esters 168.
Described processing aid is one or more mixtures in calcium stearate, Zinic stearas, the low molecular weight polyethylene.
Another object of the present invention provides the preparation method of this heat-conductive composite material, and its step is following:
(1) Vestolen PP 7052, expansible black lead, oxidation inhibitor and processing aid are mixed 3 ~ 5min in the high-speed mixer high speed by a certain percentage, thorough mixing is even;
(2) original position of putting into the material that step (1) is mixed in the twin screw extruder expands compound, screw speed 200 ~ 300rpm, and temperature is set to 190 ~ 240
oC, extruding pelletization.
The present invention prepares polymer/graphite with existing melt blending and polymkeric substance/expanded graphite heat-conductive composite material is compared and had the following advantages: have higher thermal conductivity under the identical filling content, mechanical property, and technology preferably is simple, one-step moulding.
Description of drawings
Fig. 1 (a) is the sem photograph of high temperature expanded graphite;
Fig. 1 (b) is the sem photograph of original position expanded graphite in the twin screw.
Great changes will take place can to find out the pattern higher temperatures expanded graphite of original position expanded graphite among the figure, is disk-like structure, has bigger radius-thickness ratio, more helps the formation of matrix material thermal conducting path.
Embodiment
For a better understanding of the present invention, further specify the present invention below in conjunction with embodiment.
Embodiment 1
With 100 mass parts PP powders; 100 mass parts expansible black leads, 0.5 mass parts primary antioxidant, 1010,0.5 mass parts auxiliary anti-oxidant 168 and 1 mass parts Zinic stearas join after the high-speed mixer high speed is mixed 3 ~ 5min; It is compound to put into the twin screw extruder expansion, gets PP/ expanded graphite matrix material.Injection molding proof force imitate bar and thermal conductivity test sample, injection pressure 50 ~ 60Mpa, pressurize 2s, 50 ℃ of die temperatures.The thermal conductivity of test compound material is 0.92W/mK, and tensile strength is 26.3Mpa, and flexural strength is 37.9Mpa, and notched Izod impact strength is 9.57kJ/m
2
Comparative Examples 1
With 100 mass parts PP powders; 100 mass parts graphite, 0.5 mass parts primary antioxidant, 1010,0.5 mass parts auxiliary anti-oxidant 168 and 1 mass parts Zinic stearas join after the high-speed mixer high speed is mixed 3 ~ 5min; Put in the twin screw extruder; At 220 ℃ of left and right sides extruding pelletizations, screw speed 280rpm gets the PP/ graphite composite material.Injection molding proof force imitate bar and thermal conductivity test sample, injection pressure 50 ~ 60Mpa, pressurize 2s, 50 ℃ of die temperatures.The thermal conductivity of test compound material is 0.84W/mK, and tensile strength is 25.5Mpa, and flexural strength is 38.8Mpa, and notched Izod impact strength is 6.02kJ/m
2
Embodiment 2
With 100 mass parts PP powders; 120 mass parts expansible black leads, 0.5 mass parts primary antioxidant, 1010,0.5 mass parts auxiliary anti-oxidant 168 and 1 mass parts calcium stearate join after the high-speed mixer high speed is mixed 3 ~ 5min; It is compound to put into the twin screw extruder expansion, gets PP/ expanded graphite matrix material.Injection molding proof force imitate bar and thermal conductivity test sample, injection pressure 50 ~ 60Mpa, pressurize 2s, 50 ℃ of die temperatures.The thermal conductivity of test compound material is 1.29W/mK, and tensile strength is 24.8Mpa, and flexural strength is 35.8Mpa, and notched Izod impact strength is 8.52kJ/m
2
Comparative Examples 2
With 100 mass parts PP powders; 120 mass parts graphite, 0.5 mass parts primary antioxidant, 1010,0.5 mass parts auxiliary anti-oxidant 168 and 1 mass parts calcium stearate join after the high-speed mixer high speed is mixed 3 ~ 5min; Put in the twin screw extruder; At 220 ℃ of left and right sides extruding pelletizations, screw speed 280rpm gets the PP/ graphite composite material.Injection molding proof force imitate bar and thermal conductivity test sample, injection pressure 50 ~ 60Mpa, pressurize 2s, 50 ℃ of die temperatures.The thermal conductivity of test compound material is 1.02W/mK, and tensile strength is 23.2Mpa, and flexural strength is 35.7Mpa, and notched Izod impact strength is 5.28 kJ/m
2
Embodiment 3
With 100 mass parts PP powders; 140 mass parts expansible black leads, 0.5 mass parts primary antioxidant, 1010,0.5 mass parts auxiliary anti-oxidant 168 and 1.5 mass parts low molecular weight polyethylenes join after the high-speed mixer high speed is mixed 3 ~ 5min; It is compound to put into the twin screw extruder expansion, gets PP/ expanded graphite matrix material.Injection molding proof force imitate bar and thermal conductivity test sample, injection pressure 70 ~ 90Mpa, pressurize 3s, 50 ℃ of die temperatures.The thermal conductivity of test compound material is 1.82W/mK, and tensile strength is 23.5Mpa, and flexural strength is 34.1Mpa, and notched Izod impact strength is 6.54 kJ/m
2
Comparative Examples 3
With 100 mass parts PP powders; 140 mass parts graphite, 0.5 mass parts primary antioxidant, 1010,0.5 mass parts auxiliary anti-oxidant 168 and 1.5 mass parts low molecular weight polyethylenes join after the high-speed mixer high speed is mixed 3 ~ 5min; Put in the twin screw extruder; At 220 ℃ of left and right sides extruding pelletizations, screw speed 230rpm gets the PP/ graphite composite material.Injection molding proof force imitate bar and thermal conductivity test sample, injection pressure 70 ~ 90Mpa, pressurize 3s, 50 ℃ of die temperatures.The thermal conductivity of test compound material is 1.37W/mK, and tensile strength is 22.6Mpa, and flexural strength is 33.2Mpa, and notched Izod impact strength is 3.74 kJ/m
2
Through comparing embodiments of the invention and Comparative Examples; Fill under the umber at identical filler; Adopt the expand polymer-based carbon heat-conductive composite material of compound preparation of original position to have higher thermal conductivity than the polymer-based carbon heat-conductive composite material of melt blending preparation; And the impact property downtrending of matrix material is less, can satisfy the request for utilization of most of environment.
The tensile property of matrix material is tested according to GB/T1040-1992, draw speed 50mm/min; The socle girder notched Izod impact strength is tested according to GB/T1843-1996, and the pendulum energy is 2.75J; The flexural strength test presses down speed 2mm/min according to the GB/T9341-2000 test, and 8mm is moved in the location; Heat conductivility adopts the TPS2500S type thermal constant analyser test of Sweden Hotdisk company, and testing standard is with reference to ISO22007-2-2008.
Claims (6)
1. PP/ expanded graphite heat-conductive composite material, it is characterized in that: the recipe ingredient of this matrix material is according to the mass fraction:
100 parts of Vestolen PP 7052
60 ~ 150 parts of expansible black leads
0.5 ~ 2 part in oxidation inhibitor
0.5 ~ 2 part of processing aid.
2. heat-conductive composite material according to claim 1 is characterized in that: described Vestolen PP 7052 is a block copolymerization polypropylene.
3. heat-conductive composite material according to claim 1 is characterized in that: described expansible black lead is the expandable graphite at low-temperature of nitric acid oxidation, perchloric acid intercalation, and initial expansion temperature is 180 ℃ ~ 210 ℃.
4. heat-conductive composite material according to claim 1 is characterized in that: described oxidation inhibitor is primary antioxidant and auxiliary anti-oxidant, and primary antioxidant is 1010 of a phenols, and auxiliary anti-oxidant is phosphorous acid esters 168.
5. heat-conductive composite material according to claim 1 is characterized in that: described processing aid is one or more mixtures in calcium stearate, Zinic stearas, the low molecular weight polyethylene.
6. according to the preparation method of each described heat-conductive composite material of claim 1-5, it is characterized in that:
(1) Vestolen PP 7052, expansible black lead, oxidation inhibitor and processing aid are mixed 3 ~ 5min by proportioning in the high-speed mixer high speed, thorough mixing is even;
(2) original position of putting into the material that step (1) is mixed in the twin screw extruder expands compound, screw speed 200 ~ 300rpm, and temperature is set to 190 ~ 240
oC, extruding pelletization.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087415A (en) * | 2013-01-31 | 2013-05-08 | 合肥工业大学 | Thermally conductive and insulating composite material and preparation method thereof |
| CN103694720A (en) * | 2012-09-27 | 2014-04-02 | 纳幕尔杜邦公司 | Thermally conductive polymer composition and products containing the same |
| CN104558768A (en) * | 2014-12-23 | 2015-04-29 | 贾纬民 | Preparation method of environment-friendly reducing clean ecotype foaming material, prepared foaming material and terminal product |
| CN104884243A (en) * | 2012-10-19 | 2015-09-02 | 新泽西鲁特格斯州立大学 | In situ exfoliation method to fabricate a graphene-reinforced polymer matrix composite |
| CN105315668A (en) * | 2014-05-27 | 2016-02-10 | 大信科技有限公司 | Highly thermally conductive inorganic-polymer complex composition applied to lighting LED that contains expanded graphite and manufacturing method thereof |
| CN103289655B (en) * | 2013-07-03 | 2016-03-02 | 西北大学 | Expanded graphite composite heat storage material and its preparation method and application |
| CN105417535A (en) * | 2015-12-29 | 2016-03-23 | 成都新柯力化工科技有限公司 | Method for preparing graphene material through stretching |
| CN105502367A (en) * | 2015-12-31 | 2016-04-20 | 成都新柯力化工科技有限公司 | Method for preparing graphene by pulling jelly |
| CN108407135A (en) * | 2018-02-11 | 2018-08-17 | 华南理工大学 | The method and its application of polypropylene/exfoliated-graphite composite are prepared using water auxiliary molten mixing extrusion |
| CN109206908A (en) * | 2018-09-12 | 2019-01-15 | 中国科学院山西煤炭化学研究所 | A kind of high thermal conductivity graphite/plastic composite and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962454A (en) * | 2009-07-23 | 2011-02-02 | 倪平 | Heat-conducting and electricity-conducting modified plastic material and preparation method |
-
2012
- 2012-06-11 CN CN2012101904023A patent/CN102675806A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962454A (en) * | 2009-07-23 | 2011-02-02 | 倪平 | Heat-conducting and electricity-conducting modified plastic material and preparation method |
Non-Patent Citations (3)
| Title |
|---|
| 《现代塑料加工应用》 20111231 陈锐等 "EG/PP导热复合材料的制备与性能" 29-32 1-6 第23卷, 第6期 * |
| 陈锐等: ""EG/PP导热复合材料的制备与性能"", 《现代塑料加工应用》 * |
| 魏兴海等: ""HClO4-GIC的制备及其柔性石墨的性能"", 《新型炭材料》 * |
Cited By (15)
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| CN103694720B (en) * | 2012-09-27 | 2016-06-01 | 纳幕尔杜邦公司 | Thermally conductive polymer composition and the goods comprising said composition |
| CN103694720A (en) * | 2012-09-27 | 2014-04-02 | 纳幕尔杜邦公司 | Thermally conductive polymer composition and products containing the same |
| CN104884243A (en) * | 2012-10-19 | 2015-09-02 | 新泽西鲁特格斯州立大学 | In situ exfoliation method to fabricate a graphene-reinforced polymer matrix composite |
| CN104884243B (en) * | 2012-10-19 | 2017-07-18 | 新泽西鲁特格斯州立大学 | Prepare the stripping method in situ of the polymer matrix composites of graphene reinforcement |
| CN103087415A (en) * | 2013-01-31 | 2013-05-08 | 合肥工业大学 | Thermally conductive and insulating composite material and preparation method thereof |
| CN103289655B (en) * | 2013-07-03 | 2016-03-02 | 西北大学 | Expanded graphite composite heat storage material and its preparation method and application |
| CN105315668A (en) * | 2014-05-27 | 2016-02-10 | 大信科技有限公司 | Highly thermally conductive inorganic-polymer complex composition applied to lighting LED that contains expanded graphite and manufacturing method thereof |
| CN104558768A (en) * | 2014-12-23 | 2015-04-29 | 贾纬民 | Preparation method of environment-friendly reducing clean ecotype foaming material, prepared foaming material and terminal product |
| CN105417535A (en) * | 2015-12-29 | 2016-03-23 | 成都新柯力化工科技有限公司 | Method for preparing graphene material through stretching |
| CN105417535B (en) * | 2015-12-29 | 2017-05-31 | 成都新柯力化工科技有限公司 | A kind of method that grapheme material is prepared by stretching |
| CN105502367A (en) * | 2015-12-31 | 2016-04-20 | 成都新柯力化工科技有限公司 | Method for preparing graphene by pulling jelly |
| CN105502367B (en) * | 2015-12-31 | 2017-09-22 | 成都新柯力化工科技有限公司 | A kind of method that utilization jelly drawing prepares graphene |
| CN108407135A (en) * | 2018-02-11 | 2018-08-17 | 华南理工大学 | The method and its application of polypropylene/exfoliated-graphite composite are prepared using water auxiliary molten mixing extrusion |
| CN108407135B (en) * | 2018-02-11 | 2019-10-18 | 华南理工大学 | Polypropylene/exfoliated-graphite composite method and its application are prepared using water auxiliary molten mixing extrusion |
| CN109206908A (en) * | 2018-09-12 | 2019-01-15 | 中国科学院山西煤炭化学研究所 | A kind of high thermal conductivity graphite/plastic composite and preparation method thereof |
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Application publication date: 20120919 |