CN102660056A - Preparation method of novel heat-conducting natural rubber compound material - Google Patents
Preparation method of novel heat-conducting natural rubber compound material Download PDFInfo
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- CN102660056A CN102660056A CN2012101555056A CN201210155505A CN102660056A CN 102660056 A CN102660056 A CN 102660056A CN 2012101555056 A CN2012101555056 A CN 2012101555056A CN 201210155505 A CN201210155505 A CN 201210155505A CN 102660056 A CN102660056 A CN 102660056A
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- conducting
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Abstract
The invention discloses a preparation method of a novel heat-conducting natural rubber compound material, which belongs to the technical field of a compound material of rubber. The problem that a compound material of natural rubber, which has excellent heat-conducting property and mechanical property, can not be prepared by utilizing a fibrous heat-conducting filler in the prior art is solved. The preparation method of the novel heat-conducting natural rubber compound material comprises the following steps of: adding into a double-screw extrusion machine for granulating after mixing powdery and fibrous heat-conducting particles with high heat-conducting coefficient and thermoplastics so as to prepare a mother stock, wherein the mass fraction of the heat-conducting particles accounts for 20 to 70 percent of the total mass of the mother stock; and then, spinning the mother stock in a small-sized double-screw extrusion machine with a spinning machine head so as to prepare a fibrous heat-conducting filler, and preparing the heat-conducting natural rubber compound material by utilizing the fibrous heat-conducting filler according to a conventional method. The product disclosed by the invention has excellent heat-conducting property and comprehensive mechanical property, is low in the price of raw materials and has extensive application in a heat radiating element and a component with larger dynamic heat generation.
Description
Technical field
The invention belongs to the rubber composite technical field, be specifically related to a kind of preparation method of novel heat conductive NR matrix material.
Background technology
Tree elastomer has high elasticity at normal temperatures, good physical strength and flexible resistance, and electrical insulation capability is good, can be applied to many fields.But tree elastomer is the poor conductor of heat, has limited its application in some field, and has improved its heat conductivility, can enlarge its Application Areas, and is significant to The development in society and economy.Therefore, the thermal conductivity of raising tree elastomer becomes a problem that presses for solution.
Heat conductive filler mainly is some inorganic particulates, can be divided into according to its shape granular, fibrous and sheet etc.Generally speaking; Under same loading level; Fibrous and laminal filler can give matrix material higher thermal conductivity with respect to particulate filler; And the heat conduction and the mechanical property of bat wool filled rubber have directivity, and directly upwards the heat conduction and the mechanical property of matrix material are all good than other direction at it.
Present widely used bat wool has nano-silicon aluminum pipe, carbon nanotube etc., but has following shortcoming in use: (1) price comparison is expensive; (2) the bat wool amount that need fill of heat conductive rubber matrix material is many, influences the mechanical property of elastomeric material; (3) influence its industrialized prospect.
At present, also there is not a kind of ideal method can effectively solve the above-mentioned shortcoming that bat wool exists when the preparation rubber composite.
Summary of the invention
The present invention can't provide a kind of preparation method of novel heat conductive NR matrix material through the problem of utilizing fibrous heat conductive filler to prepare to have the native rubber composite material of heat conductivility and good mechanical performance in order to solve prior art.
The present invention realizes through following technical scheme:
A kind of preparation method of novel heat conductive NR matrix material may further comprise the steps:
(1) preparation of fibrous heat conductive filler:
Powdery that thermal conductivity is high and fibrous heat conduction particle and thermoplastics join granulation in the twin screw extruder after mixing; Make masterbatch; The mass fraction of wherein said heat conduction particle accounts for 20～70% of masterbatch total mass, and spinning makes fibrous heat conductive filler in the small capacity double screw extrusion press of spinning head being equipped with masterbatch then;
(2) preparation of heat conductive NR matrix material:
Earlier tree elastomer is added Banbury mixer and plasticate, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, carbon black, fibrous heat conductive filler then successively, take out mixing even back; On opening rubber mixing machine, add promotor, vulcanizing agent, wherein the mass ratio of tree elastomer, carbon black, fibrous heat conductive filler is 100:20～80:10～40, carries out mixing then; Mixing even back is sheet down, obtains rubber unvulcanizate, and rubber unvulcanizate was at room temperature placed 24 hours; Sulfidization molding gets product then.
Further, described heat conduction particle is C, SiC, BN, AlN, MgO, ZnO, Al
2O
3
Described SiC is green SiC.
Described Al
2O
3Granularity be 0.5 μ m.
Described thermoplastics is PE, PP, PVC, PC.
Described tree elastomer is a smoke sheet rubber.
Described carbon black is that the trade mark is the intermediate super abrasion furnace black of N330.
To carry out performance test according to the heat conductive NR matrix material that the inventive method makes: tensile property is measured according to GB/T 528-92; Thermal conductivity is measured according to the stable state flat band method, and experimental installation comprises the hot physical property measurement appearance of SEI-3 type quasi steady state method, computingmachine and experiment control software.
The present invention utilizes fibrous heat conductive filler can in rubber matrix, form the heat conductivility that heat conduction network chain preferably improves rubber composite, and this fibrous heat conductive filler and rubber matrix have the mechanical property that consistency preferably improves native rubber composite material simultaneously.Therefore, rubber composite of the present invention has heat conductivility and comprehensive mechanical property excellent characteristics.The cost of material for preparing fibrous heat conductive filler in addition is all cheaper, therefore, heat conductive rubber matrix material low price of the present invention, moulding processability is good.Therefore, heat conductive rubber matrix material of the present invention is expected in heat dissipation element (like the thermal component between the radiating fin) and the bigger middle acquisition widespread use of components and parts (like the bogie wheel that under the current intelligence of being everlasting, uses, vibroshock etc.) of dynamic heat build up.
Embodiment
Embodiment 1
A kind of preparation method of novel heat conductive NR matrix material may further comprise the steps:
(1) PVC/ Al
2O
3The preparation of heat conducting fiber:
Taking by weighing 100 gram particle degree is the Al of 0.5 μ m
2O
3After 100 gram PVC mixed at high speed, join in the twin screw extruder, configure the temperature in each district, granulation obtains Al
2O
3Content is 50% masterbatch, then masterbatch is joined in the small-sized twin screw extruder, configures the temperature in each district, and spinning makes heat conductive filler;
It is as shown in table 1 that each distinguishes the temperature setting,
Table 1
| Warm area | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Head |
| Temperature (℃) | 175 | 175 | 180 | 180 | 190 | 190 | 190 | 180 | 180 |
(2) preparation of heat conductive NR matrix material:
Earlier 200 gram tree elastomers are added Banbury mixer and plasticated 5 minutes, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, 40 gram carbon blacks, 60 gram PVC/ Al then successively
2O
3Heat conducting fiber, take out mixing even back, on opening rubber mixing machine, adds promotor, vulcanizing agent; Carry out mixingly then, mixing even back is sheet down, obtains rubber unvulcanizate; Rubber unvulcanizate was at room temperature placed 24 hours; With its sulfidization molding on 25 tons of vulcanizing presses, cure conditions is 145 ℃ * 30min, gets product then.
Through performance test, the tensile strength of this heat conductive rubber matrix material is 20 MPa, and thermal conductivity is 1.8 W/mk.
Embodiment 2
A kind of preparation method of novel heat conductive NR matrix material may further comprise the steps:
(1) PE/ Al
2O
3The perhaps preparation of PE/ZnO heat conducting fiber:
Take by weighing 20 gram Al
2O
3Perhaps after ZnO and the 80 gram PE mixed at high speed, join in the twin screw extruder, configure the extrusion temperature in each district, granulation obtains Al
2O
3Perhaps ZnO content is 20% masterbatch, and masterbatch is joined in the small-sized twin screw extruder, configures the temperature in each district, and spinning makes heat conductive filler;
It is as shown in table 2 that each distinguishes the temperature setting,
Table 2
| Warm area | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Head |
| Temperature (℃) | 160 | 160 | 140 | 140 | 120 | 120 | 120 | 180 | 180 |
(2) preparation of rubber composite:
Earlier 200 gram tree elastomers are added Banbury mixer and plasticated 5 minutes, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, 80 gram carbon blacks, 160 gram PE/Al then successively
2O
3Perhaps PE/ZnO heat conducting fiber, take out mixing even back, on opening rubber mixing machine, adds promotor, vulcanizing agent; Carry out mixing then; Mixing even back is sheet down, obtains rubber unvulcanizate, and rubber unvulcanizate was at room temperature placed 24 hours; With its sulfidization molding on 25 tons of vulcanizing presses, cure conditions is 145 ℃ * 30min then.
Through performance test, tensile strength 24 MPa of this heat conductive rubber matrix material, thermal conductivity is 2.0 W/mk.
Embodiment 3
A kind of preparation method of novel heat conductive NR matrix material may further comprise the steps:
(1) preparation of PP/ SiC or PP/BN heat conducting fiber:
After taking by weighing 120 green SiC of gram or BN and 80 gram PP mixed at high speed; Join in the twin screw extruder, configure the extrusion temperature in each district, granulation; Obtain SiC or BN content and be 60% masterbatch; Masterbatch is joined in the small-sized twin screw extruder, configure the extrusion temperature in each district, spinning makes heat conducting fiber;
It is as shown in table 3 that each distinguishes the temperature setting,
Table 3
| Warm area | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Head |
| Temperature (℃) | 175 | 175 | 180 | 180 | 190 | 190 | 190 | 180 | 180 |
(2) preparation of heat conductive NR matrix material:
Earlier 200 gram smoke sheet rubbers are added Banbury mixer and plasticated 5 minutes, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, 160 gram carbon blacks, 40 gram PP/ SiC or PP/BN heat conducting fiber then successively, take out mixing even back; On opening rubber mixing machine, add promotor, vulcanizing agent, carry out mixingly then, mixing even back is sheet down; Obtain rubber unvulcanizate; Rubber unvulcanizate was at room temperature placed 24 hours, and with its sulfidization molding on 25 tons of vulcanizing presses, cure conditions is 145 ℃ * 30min then.
Through performance test, the tensile strength of this heat conductive rubber matrix material is 25 MPa, and thermal conductivity is 2.1 W/mk.
Embodiment 4
A kind of preparation method of novel heat conductive NR matrix material may further comprise the steps:
(1) preparation of PC/ SiC or PC/AlN heat conducting fiber:
After taking by weighing 120 gram SiC or AlN and 80 gram PC mixed at high speed; Join in the twin screw extruder, configure the extrusion temperature in each district, granulation; Obtain SiC or AlN content and be 60% masterbatch; Masterbatch is joined in the small-sized twin screw extruder, configure the extrusion temperature in each district, spinning makes heat conducting fiber;
It is as shown in table 4 that each distinguishes the temperature setting,
Table 4
| Warm area | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Head |
| Temperature (℃) | 185 | 185 | 195 | 195 | 200 | 200 | 200 | 180 | 180 |
(2) preparation of heat conductive NR matrix material
Earlier 200 gram smoke sheet rubber tree elastomers are added Banbury mixer and plasticated 5 minutes, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, 100 gram carbon blacks, 200 gram PC/SiC or PC/AlN heat conducting fiber then successively, take out mixing even back; On opening rubber mixing machine, add promotor, vulcanizing agent, carry out mixingly then, mixing even back is sheet down; Obtain rubber unvulcanizate; Rubber unvulcanizate was at room temperature placed 24 hours, and with its sulfidization molding on 25 tons of vulcanizing presses, cure conditions is 145 ℃ * 30min then.
Through performance test, the tensile strength of this heat conductive rubber matrix material is 27 MPa, and thermal conductivity is 2.8 W/mk.
Embodiment 5
A kind of preparation method of novel heat conductive NR matrix material may further comprise the steps:
(1) preparation of PE/ C or PE/MgO heat conducting fiber:
After taking by weighing 140 gram C or MgO and 60 gram PE mixed at high speed; Join in the twin screw extruder, configure the extrusion temperature in each district, granulation; Obtain C or MgO content and be 70% masterbatch; Masterbatch is joined in the small-sized twin screw extruder, configure the extrusion temperature in each district, spinning makes heat conducting fiber;
It is as shown in table 5 that each distinguishes the temperature setting,
Table 5
| Warm area | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Head |
| Temperature (℃) | 160 | 160 | 140 | 140 | 120 | 120 | 120 | 180 | 180 |
(2) preparation of heat conductive NR matrix material
Earlier 200 gram tree elastomers are added Banbury mixer and plasticated 5 minutes, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, 120 gram carbon blacks, 50 gram PE/ C or PE/MgO heat conducting fiber then successively, take out mixing even back; On opening rubber mixing machine, add promotor, vulcanizing agent, carry out mixingly then, mixing even back is sheet down; Obtain rubber unvulcanizate; Rubber unvulcanizate was at room temperature placed 24 hours, and with its sulfidization molding on 25 tons of vulcanizing presses, cure conditions is 145 ℃ * 30min then.
Through performance test, the tensile strength of this heat conductive rubber matrix material is 15MPa, and thermal conductivity is 3.2 W/mk.
Product to embodiment 1-5 carries out tensile strength and thermal Conductivity Determination, and the result is as shown in table 6,
Table 6
| Numbering | Tensile strength (MPa) | Thermal conductivity (W/mk) |
| Embodiment 1 | 20 | 1.8 |
| Embodiment 2 | 24 | 2.0 |
| Embodiment 3 | 25 | 2.1 |
| Embodiment 4 | 27 | 2.8 |
| Embodiment 5 | 15 | 3.2 |
Claims (7)
1. the preparation method of a novel heat conductive NR matrix material is characterized in that may further comprise the steps:
(1) preparation of fibrous heat conductive filler:
Powdery that thermal conductivity is high and fibrous heat conduction particle and thermoplastics join granulation in the twin screw extruder after mixing; Make masterbatch; The mass fraction of wherein said heat conduction particle accounts for 20～70% of masterbatch total mass, and spinning makes fibrous heat conductive filler in the small capacity double screw extrusion press of spinning head being equipped with masterbatch then;
(2) preparation of heat conductive NR matrix material:
Earlier tree elastomer is added Banbury mixer and plasticate, add Triple Pressed Stearic Acid, zinc oxide, anti-aging agent, carbon black, fibrous heat conductive filler then successively, take out mixing even back; On opening rubber mixing machine, add promotor, vulcanizing agent, wherein the mass ratio of tree elastomer, carbon black, fibrous heat conductive filler is 100:20～80:10～40, carries out mixing then; Mixing even back is sheet down, obtains rubber unvulcanizate, and rubber unvulcanizate was at room temperature placed 24 hours; Sulfidization molding gets product then.
2. the preparation method of a kind of novel heat conductive NR matrix material according to claim 1 is characterized in that, described heat conduction particle is C, SiC, BN, AlN, MgO, ZnO, Al
2O
3
3. the preparation method of a kind of novel heat conductive NR matrix material according to claim 2, the described SiC of its characteristic is green SiC.
4. the preparation method of a kind of novel heat conductive NR matrix material according to claim 2 is characterized in that described Al
2O
3Granularity be 0.5 μ m.
5. the preparation method of a kind of novel heat conductive NR matrix material according to claim 1 and 2, the described thermoplastics of its characteristic is PE, PP, PVC, PC.
6. the preparation method of a kind of novel heat conductive NR matrix material according to claim 1 and 2 is characterized in that described tree elastomer is a smoke sheet rubber.
7. the preparation method of a kind of novel heat conductive NR matrix material according to claim 1 and 2 is characterized in that described carbon black is that the trade mark is the intermediate super abrasion furnace black of N330.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614796A (en) * | 2013-12-03 | 2014-03-05 | 紫罗兰家纺科技股份有限公司 | Method for producing cool sense honeycomb fibers |
| CN105160430A (en) * | 2015-08-26 | 2015-12-16 | 中国热带农业科学院橡胶研究所 | Prediction method for superior plants in seedling stage of rubber trees |
| CN113150400A (en) * | 2021-01-21 | 2021-07-23 | 山东宏建高分子材料科技有限公司 | High-thermal-conductivity rubber material and preparation method thereof |
| CN114316383A (en) * | 2021-11-29 | 2022-04-12 | 东风商用车有限公司 | Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087511A (en) * | 2006-06-08 | 2007-12-12 | 保力马科技株式会社 | Thermally conductive forming body and method of manufacturing the same |
| CN101942122A (en) * | 2010-10-21 | 2011-01-12 | 中北大学 | Heat-conduction natural rubber composite and preparation method thereof |
-
2012
- 2012-05-18 CN CN 201210155505 patent/CN102660056B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087511A (en) * | 2006-06-08 | 2007-12-12 | 保力马科技株式会社 | Thermally conductive forming body and method of manufacturing the same |
| CN101942122A (en) * | 2010-10-21 | 2011-01-12 | 中北大学 | Heat-conduction natural rubber composite and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614796A (en) * | 2013-12-03 | 2014-03-05 | 紫罗兰家纺科技股份有限公司 | Method for producing cool sense honeycomb fibers |
| CN103614796B (en) * | 2013-12-03 | 2016-06-15 | 紫罗兰家纺科技股份有限公司 | A kind of production method of cool feeling cellular fibronectin |
| CN105160430A (en) * | 2015-08-26 | 2015-12-16 | 中国热带农业科学院橡胶研究所 | Prediction method for superior plants in seedling stage of rubber trees |
| CN113150400A (en) * | 2021-01-21 | 2021-07-23 | 山东宏建高分子材料科技有限公司 | High-thermal-conductivity rubber material and preparation method thereof |
| CN114316383A (en) * | 2021-11-29 | 2022-04-12 | 东风商用车有限公司 | Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof |
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Inventor after: Zhao Guizhe Inventor after: Zhang Zhiyi Inventor after: Li Mingqin Inventor after: Liu Yaqing Inventor before: Zhang Zhiyi Inventor before: Zhao Guizhe Inventor before: Li Mingqin Inventor before: Liu Yaqing |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG ZHIYI ZHAO GUIZHE LI MINGQIN LIU YAQING TO: ZHAO GUIZHE ZHANG ZHIYI LI MINGQIN LIU YAQING |
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