CN102942716A - Composite type heat conducting rubber and method for preparing same - Google Patents
Composite type heat conducting rubber and method for preparing same Download PDFInfo
- Publication number
- CN102942716A CN102942716A CN2012104461493A CN201210446149A CN102942716A CN 102942716 A CN102942716 A CN 102942716A CN 2012104461493 A CN2012104461493 A CN 2012104461493A CN 201210446149 A CN201210446149 A CN 201210446149A CN 102942716 A CN102942716 A CN 102942716A
- Authority
- CN
- China
- Prior art keywords
- parts
- rubber
- vulcanization
- heat conductive
- heat conducting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 52
- 239000005060 rubber Substances 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title abstract description 6
- 238000000034 method Methods 0.000 title description 3
- 238000004073 vulcanization Methods 0.000 claims abstract description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 18
- 229920001194 natural rubber Polymers 0.000 claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 238000005987 sulfurization reaction Methods 0.000 claims description 12
- 239000005864 Sulphur Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000012190 activator Substances 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a composite type heat conducting rubber. In parts by weight, the composite type heat conducting rubber comprises 100 parts of natural rubber, electric conduction modifying agent, 3 parts of sulfur, 2 parts of vulcanization accelerator and 9 parts of vulcanizing activator; and the electric conduction modifying agent is 1-5 parts of carbon fiber, 10-50 parts of silicon carbide or 7.5-15 parts of copper powder. The composite type heat conducting rubber adopts the carbon fiber, the silicon carbide or the copper powder as the electric conduction modifying agent, the addition amount of the electric conduction modifying agent is strictly controlled and screened, so that an obtained product has good electric conduction performance, and optimal various performance indexes of the obtained product can also be realized. The composite type heat conducting rubber is simple in preparation material technology, is convenient to operate, has high benefit and is suitable for industrial production.
Description
Technical field
The present invention relates to material science, especially a kind of compound heat conductive rubber and preparation method thereof.
Background technology
Natural rubber is a kind of natural high moleculer eompound take polyisoprene as main component, has at normal temperatures higher elasticity, slightly is with plasticity, has extraordinary physical strength, hysteresis loss is less, and because be non-polar rubber, so its insulating property are also good.
Heat conductive rubber is a class rubber-base composite material that stresses heat conductivility, and the raising of heat conductivility is accompanied by the optimization of heat dispersion usually.Heat radiation is of crucial importance to electronic product, and statistical information shows, 2 ℃ of the every risings of electronic element temperature, its reliability decrease 10%; When the life-span in the time of 50 ℃ needs only 25 ℃ 1/6.Heat conductive rubber needing in space flight, aviation, electronics, the appliance field to be widely used in the position of dispelling the heat and conducting heat, and can play the effect of insulation and damping simultaneously.The insulating heat-conductive caulking gum has higher thermal conductivity, good electrical property and ageing-resistant performance, and the heat that produces during the electronic product that can effectively leave uses is all significant to its reliability of densification, miniaturization and raising and the life-span of electronic product.
Summary of the invention
Technical problem to be solved by this invention provides a kind of compound heat conductive rubber and preparation method thereof, and it can make natural rubber property indices when having certain electroconductibility reach optimum.
The present invention is achieved in that compound heat conductive rubber, calculates by weight, comprises 100 parts of natural rubbers, heat conduction properties-correcting agent, 3 parts in sulphur, 9 parts of 2 parts of vulcanization accelerators and vulcanization levellers; Described heat conduction properties-correcting agent is 1～5 part on carbon fiber, 7.5～15 parts of 10～50 parts in silicon carbide or copper powders.
Described vulcanization accelerator is promotor TT.
Per 9 parts of vulcanization levellers are comprised of 6 parts of zinc oxide and 3 parts of stearic acid.
The preparation method of compound heat conductive rubber carries out plastics with natural rubber, obtains plastic cement; Add the conductive modified agent in the broken-(down)rubber, sulphur carries out mixingly behind vulcanization accelerator and the vulcanization leveller, obtain rubber unvulcanizate; The rubber unvulcanizate that obtains, is added in the mould after mixing 20 minutes at mill refining glue 10 minutes, milling machine, make the sulfuration that begins to be heated of rubber unvulcanizate and counterdie contact part; The rubber unvulcanizate volumetric expansion; Rubber unvulcanizate is expanded to after patrix contacts fully, and the rubber unvulcanizate that contacts with patrix begins sulfuration, and by the conduction of conducting heat, rubber unvulcanizate inside begins sulfuration, obtains finished product after the sulfuration typing.
Compression molding instrument upper die and lower die temperature is 150 ℃, and middle mould temperature is 148 ℃, and curing time is 10 minutes.
Carried out following experiment by experiment effect of the present invention in order further to verify:
Take natural rubber as matrix, promotor TT is vulcanization accelerator, and sulphur is vulcanizing agent, adds in addition zinc oxide and stearic acid as vulcanization leveller, adds respectively silicon carbide, carbon fiber or the copper powder of different content.Rubber mixing technique additive interpolation order: natural rubber-silicon carbide/carbon fiber/copper powder-zinc oxide-stearic acid-promotor-sulphur.The recipe ingredient of carbon fiber, silicon carbide, copper powder ratio of quality and the number of copies is as follows:
The grouping sheet of table 1 (carbon fiber) natural rubber (a=gram, lower same)
Table 2 (silicon carbide) natural rubber grouping sheet
Table 3 (copper powder) natural rubber grouping sheet
The preparation method of compound heat conductive rubber comprises the steps:
Respectively carbon fiber, carbonization ketone, copper powder are prepared compound heat conductive rubber prescription and accurately take by weighing each component according to described;
Each component that weighs up is simply mixed, and mixing through mill, milling machine;
Described mixing materials is vulcanized at XLB-D350X350X2 compression molding instrument.
Mechanics Performance Testing;
Tensile strength, tear resistance are tested according to standard GB/T/T 1040.2-2006, GB/T 1843-2008, wherein along with the test result of the compound heat conductive rubber of increase of carbon fiber, silicon carbide, copper powder content is as shown in the table:
Table 4 carbon fiber content is on the impact of compound heat conductive rubber performance
Table 5 carborundum content is on the impact of compound heat conductive rubber performance
Table 6 copper powder content is on the impact of compound heat conductive rubber performance
Learn according to experimental result, the tensile strength, tearing toughness, the swelling ratio that add the natural rubber of silicon carbide all decrease, the time sulfurizing time of burning reduces, vulcanization rate increases, and hardness and bounce impact elasticity all increase, when Silicon carbide addition was 20 parts, thermal conductivity was 0.72W/ (m ℃).The tensile strength of the natural rubber of adding carbon fiber and tearing toughness and swelling ratio decrease, the time sulfurizing time of burning reduces, vulcanization rate increases, but when adding 4 parts of carbon fibers, it raises rapidly, and hardness increases in addition, but impact is little, and when the carbon fiber add-on was 3 parts, thermal conductivity was 0.9W/ (m ℃).The tensile strength and the tearing toughness that add the natural rubber of copper powder at first all are to reduce afterwards to raise again, and it is for the highest when adding 12.5 parts of copper powders, and when the copper powder add-on was 10 parts, thermal conductivity was 1.4W/ (m ℃).
Owing to adopted above-mentioned technical scheme, compared with prior art, the present invention adopts carbon fiber, silicon carbide or copper powder are as heat conduction properties-correcting agent, its add-on strict control and screening have been carried out, make the product of acquisition not only have good heat conductivility, and property indices also can reach optimum.It is simple that the present invention prepares material technology, easy to operate, and high efficiency is suitable for carrying out industrial production.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiments of the invention 1: compound heat conductive rubber, calculate by weight, comprise 100 parts of natural rubbers, 3 parts on carbon fiber, 10 parts in silicon carbide, 10 parts of copper powders, 3 parts in sulphur, 9 parts of promotor TT2 part and vulcanization levellers, vulcanization leveller is comprised of 6 parts of zinc oxide and 3 parts of stearic acid.
The preparation method of compound heat conductive rubber carries out plastics with natural rubber, obtains plastic cement; Add the conductive modified agent in the broken-(down)rubber, sulphur carries out mixingly behind vulcanization accelerator and the vulcanization leveller, obtain rubber unvulcanizate; The rubber unvulcanizate that obtains, is added in the mould after mixing 20 minutes at mill refining glue 10 minutes, milling machine, make the sulfuration that begins to be heated of rubber unvulcanizate and counterdie contact part; The rubber unvulcanizate volumetric expansion; Rubber unvulcanizate is expanded to after patrix contacts fully, and the rubber unvulcanizate that contacts with patrix begins sulfuration, and by the conduction of conducting heat, rubber unvulcanizate inside begins sulfuration, obtains finished product after the sulfuration typing; In the sulfidation, compression molding instrument upper die and lower die temperature is 150 ℃, and middle mould temperature is 148 ℃, and curing time is 10 minutes.
Embodiments of the invention 2: compound heat conductive rubber, calculate by weight, comprise 100 parts of natural rubbers, 4 parts on carbon fiber, 20 parts in silicon carbide, 8 parts of copper powders, 3 parts in sulphur, 9 parts of promotor TT2 part and vulcanization levellers, vulcanization leveller is comprised of 6 parts of zinc oxide and 3 parts of stearic acid.
The preparation method is with embodiment 1.
Embodiments of the invention 3: compound heat conductive rubber, calculate by weight, comprise 100 parts of natural rubbers, 2 parts on carbon fiber, 30 parts in silicon carbide, 12 parts of copper powders, 3 parts in sulphur, 9 parts of promotor TT2 part and vulcanization levellers, vulcanization leveller is comprised of 6 parts of zinc oxide and 3 parts of stearic acid.
The preparation method is with embodiment 1.
Claims (5)
1. a compound heat conductive rubber is characterized in that: calculate by weight, comprise 100 parts of natural rubbers, heat conduction properties-correcting agent, 3 parts in sulphur, 9 parts of 2 parts of vulcanization accelerators and vulcanization levellers; Described heat conduction properties-correcting agent is 1～5 part on carbon fiber, 7.5～15 parts of 10～50 parts in silicon carbide or copper powders.
2. compound heat conductive rubber according to claim 1, it is characterized in that: described vulcanization accelerator is promotor TT.
3. compound heat conductive rubber according to claim 1, it is characterized in that: per 9 parts of vulcanization levellers are comprised of 6 parts of zinc oxide and 3 parts of stearic acid.
4. the preparation method of a compound heat conductive rubber as claimed in claim 1 is characterized in that: natural rubber is carried out plastics, obtain plastic cement; Add the conductive modified agent in the broken-(down)rubber, sulphur carries out mixingly behind vulcanization accelerator and the vulcanization leveller, obtain rubber unvulcanizate; The rubber unvulcanizate that obtains, is added in the mould after mixing 20 minutes at mill refining glue 10 minutes, milling machine, make the sulfuration that begins to be heated of rubber unvulcanizate and counterdie contact part; The rubber unvulcanizate volumetric expansion; Rubber unvulcanizate is expanded to after patrix contacts fully, and the rubber unvulcanizate that contacts with patrix begins sulfuration, and by the conduction of conducting heat, rubber unvulcanizate inside begins sulfuration, obtains finished product after the sulfuration typing.
5. the preparation method of compound heat conductive rubber according to claim 4, it is characterized in that: compression molding instrument upper die and lower die temperature is 150 ℃, and middle mould temperature is 148 ℃, and curing time is 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104461493A CN102942716A (en) | 2012-11-09 | 2012-11-09 | Composite type heat conducting rubber and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104461493A CN102942716A (en) | 2012-11-09 | 2012-11-09 | Composite type heat conducting rubber and method for preparing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102942716A true CN102942716A (en) | 2013-02-27 |
Family
ID=47725721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104461493A Pending CN102942716A (en) | 2012-11-09 | 2012-11-09 | Composite type heat conducting rubber and method for preparing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102942716A (en) |
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 |
| CN104031299A (en) * | 2013-08-13 | 2014-09-10 | 辽宁跨克石油装备有限公司 | Sizing material blend and preparation method thereof |
| CN104130476A (en) * | 2014-07-25 | 2014-11-05 | 黄山市尚义橡塑制品有限公司 | Wide-temperature range high-thermal conductivity rubber-based composite material and preparation method thereof |
| CN107090103A (en) * | 2017-05-22 | 2017-08-25 | 华南理工大学 | Natural gum/silicon rubber/aluminum oxide ternary heat-conductive composite material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003168413A (en) * | 2001-11-30 | 2003-06-13 | Sanyo Electric Co Ltd | Battery and manufacturing method thereof |
| CN102504358A (en) * | 2011-11-22 | 2012-06-20 | 广东石油化工学院 | High-heat-conductivity rubber composite material and preparation method thereof |
-
2012
- 2012-11-09 CN CN2012104461493A patent/CN102942716A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003168413A (en) * | 2001-11-30 | 2003-06-13 | Sanyo Electric Co Ltd | Battery and manufacturing method thereof |
| CN102504358A (en) * | 2011-11-22 | 2012-06-20 | 广东石油化工学院 | High-heat-conductivity rubber composite material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104031299A (en) * | 2013-08-13 | 2014-09-10 | 辽宁跨克石油装备有限公司 | Sizing material blend and preparation method thereof |
| 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 |
| CN104130476A (en) * | 2014-07-25 | 2014-11-05 | 黄山市尚义橡塑制品有限公司 | Wide-temperature range high-thermal conductivity rubber-based composite material and preparation method thereof |
| CN104130476B (en) * | 2014-07-25 | 2016-08-24 | 黄山市尚义橡塑制品有限公司 | A kind of preparation method of wide temperature range height heat conductive rubber based composites |
| CN107090103A (en) * | 2017-05-22 | 2017-08-25 | 华南理工大学 | Natural gum/silicon rubber/aluminum oxide ternary heat-conductive composite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4145317A (en) | Pressure-sensitive resistance elements | |
| CN100567383C (en) | Polymer conductive composite material for temperature and stress sensor and preparation method | |
| CN102942716A (en) | Composite type heat conducting rubber and method for preparing same | |
| CN105820496B (en) | A kind of graphene/glass fiber reinforced ABS composite material and preparation method thereof | |
| CN102993478A (en) | Sizing material of high hardness rubber seal | |
| He et al. | Preparation and properties of styrene ethylene butylene styrene/polypropylene thermoplastic elastomer powder for selective laser sintering 3D printing | |
| CN104559128B (en) | A kind of preparation technology of household appliance shell composite | |
| CN105001638B (en) | A kind of high strength polyphenylene sulfide based insulation material and production technology for manufacturing Medium voltage switch or circuit breaker pole | |
| CN104710797A (en) | Silicone rubber compound and preparation method thereof | |
| CN109021342A (en) | A kind of high performance hydrogenated butyronitrile base rubber composite and preparation method thereof | |
| CN105237890A (en) | EPDM/PP thermoplastic elastomer with electromagnetic shielding property | |
| CN104086925A (en) | Preparation method of ultralow-temperature sealing element for spaceflight | |
| CN105694426A (en) | Polyurethane anti-radiation composite material and preparation method thereof | |
| CN107364029A (en) | A kind of rubber vulcanization process | |
| CN106589504A (en) | High-temperature-resistant heat-conducting stator rubber material and preparation method thereof | |
| CN113308074B (en) | Modified damping fluororubber for UHV single-column shunt reactor and preparation method thereof | |
| CN103613860A (en) | Preparation method of high temperature-resistant rubber | |
| CN109135295A (en) | A kind of silicon rubber with good stable electric conductivity | |
| CN106832467B (en) | A kind of ceramic powder modified rubber composite material and method of modifying | |
| CN103333505A (en) | High-strength insulator silica gel and preparation method thereof | |
| CN107480387A (en) | A kind of method of conductive polymer composites resistivity prepared by high-speed computer tool ball-milling method | |
| CN105037829B (en) | A kind of transmission cable connector training on installation special (purpose) rubber part composite | |
| CN111978730A (en) | Electric field self-adaptive composite material based on particle size combination and preparation method thereof | |
| KR102013709B1 (en) | Thermoplastic resin, method for prepating the resin and thermoplastic resin composition comprising the resin | |
| CN106366392A (en) | Synthetic rubber and processing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130227 |