CN1270188A - Water-proof antiwear self-lubricating material and preparing process thereof - Google Patents
Water-proof antiwear self-lubricating material and preparing process thereof Download PDFInfo
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- CN1270188A CN1270188A CN 00106677 CN00106677A CN1270188A CN 1270188 A CN1270188 A CN 1270188A CN 00106677 CN00106677 CN 00106677 CN 00106677 A CN00106677 A CN 00106677A CN 1270188 A CN1270188 A CN 1270188A
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- polyimide
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- polyether
- graphite
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Abstract
A water-proof, low-density, antiwear and self-lubricating high-molecular composition used in water medium is prepared from thermoplastic refractory polymer (polyether etherone and polyimide), graphite, nm silicon carbide and nm SiO2, and features better machinability, and excellent water-proof, antiwear, self-lubricating, high temp resistant and radiation resistant performances.
Description
The invention relates to a kind of water proof and wearable self-lubricating filled high polymer composite material in the water medium and preparation method thereof that is applicable to.
The self-lubricating high-wear-proof material is the novel material that a class that tribological field grows up for the frictional wear problem that solves material under the specific operation condition in recent years has special purpose.Common polymer and matrix material thereof the wear resistance in water medium and under the wet environment significantly reduces, its wear rate is 10～20 times under the DRY SLIDING, how to solve in the water medium and wet environment under the frictional wear problem of polymer composites, be the technical barrier of current national basis construction and solution that civilian daily life presses for.
Various fillers are filled the enhancing polymer composite and have been obtained in a lot of fields to use widely as a big class material, have solved the great technical barrier that many other materials cann't be solved.Nano material has the type material of special performance as a class, has become the focus of cross-centennial Materials science research, and its research that develops into conventional material and application have increased new content.At present, nano material has had bigger development at metallic substance and stupalith field, and in the research of polymeric material field with use at the early-stage, do not see as yet both at home and abroad about such packing material as in the water medium and the research and the application report of the wear-resistant self-lubricating polymer composite that uses under the wet environment condition, do not see relevant patent report more as yet.
The filled high polymer composite material that the purpose of this invention is to provide a kind of water-fast, low density, wear-resistant self-lubricating solves the adaptability problem and relevant friction problem of material under water medium and the wet environment working condition.
Another object of the present invention provides the preparation method of above-mentioned water-proof antiwear self-lubricating filled high polymer composite material.
Purpose of the present invention realizes by following measure:
The composition weight percentage of water-proof antiwear self-lubricating material of the present invention is:
Polyether-ether-ketone 35～80
Polyimide 5～50
Graphite 5～40
Nanometer silicon carbide 2.5～20
Nano silicon 0～20
Select nanometer silicon carbide and the nano silicon of mean particle dia for use, and particle diameter is less than the graphite of 25 μ m less than 100nm.
The viscosity of polyether-ether-ketone is η=0.6～0.9, and the choice of powder particle diameter is less than the former powder of the polyether-ether-ketone of 100 μ m.
Polyimide is an ANALYSIS OF MOLDABLE POLYIMIDES, and the choice of powder particle diameter is less than the polyimide precursor powder of 100 μ m.
Preparation method of the present invention in turn includes the following steps:
(1) take by weighing nanometer silicon carbide 2.5～20 and silicon-dioxide 0～20, adding is enough to the solvent that makes material wetting, handles with ultrasonic wave, and it fully is uniformly dispersed, and the solvent that is added can be an ethanol, and a kind of in the chlorinated hydrocarbon solvent;
(2) take by weighing polyether-ether-ketone 35～80 and polyimide 5～50 and graphite 5～40, be added to by in (1) made nanoparticle dispersion liquid, handle with the method for ultrasonic wave or ball milling, thorough mixing is uniformly dispersed, and makes its drying;
(3) will put into mould by the mixture after (2) processing, be forced into 3MPa, heat up with 10 ℃/minute heat-up rate then, treat that temperature rises to 300～350 ℃, constant temperature 15 minutes is forced into 5～15MPa then, and continue to be warming up to 360～380 ℃, constant temperature 10～60 minutes cools off under the pressurize condition then, adopts naturally cooling or makes die temperature drop to 100 ℃ with bottom knockout with the method for icing quick cooling.In above-mentioned hot pressing,, should note at any time exitting for preventing that bubble from producing.
It is in order to guarantee that product has excellent intensity and thermotolerance, has also considered the feasibility of technology simultaneously as material of main part that the present invention selects polyether-ether-ketone and heatproof polyimide for use.The second-order transition temperature of used polyether-ether-ketone is 143 ℃, and fusing point is 334 ℃, and this material has excellent mechanical property and resistance to corrosive chemicals energy.Used polyimide is an ANALYSIS OF MOLDABLE POLYIMIDES, and this material has good Technological adaptability energy, mechanical property and resistance to elevated temperatures.
It is in order to guarantee that product has low frictional coefficient and wear rate simultaneously as filler that the present invention selects nanometer silicon carbide, silicon-dioxide and graphite for use, and has favorable mechanical performance and water resistance.
Behind the hot pressing constant temperature, the selection of the type of cooling can be controlled the crystalline state of macromolecular material in the product among the present invention, and then influences the performance of product, and is generally speaking good with the product kindliness of stove naturally cooling, then better with the rigidity of the product of icing quick cooling.
The maximum characteristics of product of the present invention are to have excellent antiwear characteristic and low frictional coefficient under water medium and wet environment working condition.Simultaneously, characteristic such as that this product also has is high temperature resistant, low density, radiation hardness and other particular surroundings, this product has good processability, the small-sized component of suitable for making different shape.
The main performance index of product of the present invention is as follows:
1. density 1.44～1.85g/cm
3
2. bending strength 〉=130MPa
3. hardness 28～38 HBS (5/62.5/60)
4. frictional coefficient 0.06～0.16
5. wear rate＜4.5 * 10
-6Mm
3/ (N.m)
6. Applicable temperature scope-100 ℃～+ 250 ℃.
Product of the present invention is applicable to makes the frictional wear parts that have the low friction and high wear resistance energy under water medium and the wet environment working condition, can be used for that requirement is water-fast, traffic, the energy, agricultural and the hydraulic department of low density, wear-resistant self-lubricating, as parts such as bearing, gear, slide block and piston ring; Because its radioprotective and heat resistance are all better, also be applicable to some component of atomic reactor; Pollution-free, nuisanceless owing to it in addition, thereby also can be widely used in industries such as machinery, chemical industry, instrument, food, medicine equipment, household small-size electrical equipment.
Embodiment 1
Take by weighing nanometer silicon carbide 3g, nano silicon 2g, add ethanol 50ml, add polyimide 15g and the polyether-ether-ketone 30g and the graphite 5g of meltability after 5 minutes with ultrasonication, ball milling 3 hours is removed wherein solvent and steam with this mixture with infrared baking then.Put into mould hot pressing, be forced into 3MPa, heat-up rate with 10 ℃/min heats up, treat that temperature rises to 300 ℃, constant temperature 15 minutes is forced into 5MPa then, and continue to be warming up to 380 ℃, constant temperature 20 minutes, naturally cooling under the pressurize condition gets final product with bottom knockout when die temperature drops to 100 ℃ then.Material property satisfies These parameters.The venting in 5 minutes of every interval once in above-mentioned hot pressing.Embodiment 2
Take by weighing nanometer silicon carbide 2g, add the 50ml trichloromethane, use ultrasonication 5 minutes.The polyimide 5g and polyether-ether-ketone 40g and the graphite 10g that add the meltability take by weighing, ball milling be after 4 hours, and except that desolvating and steam, it is hot-forming to put into mould with heating and vacuum drying method.Be forced into 3MPa,, treat that temperature rises to 320 ℃ with the heat-up rate intensification of 10 ℃/min, constant temperature 15 minutes is forced into 5MPa then, and continues to be warming up to 375 ℃, constant temperature 25 minutes is used the ice quick cooling then under the pressurize condition, get final product with bottom knockout when die temperature drops to 100 ℃.Material property satisfies These parameters.The venting in 5 minutes of every interval once in above-mentioned hot pressing.Embodiment 3
Take by weighing nano silicon carbide 1g, silicon-dioxide 2g, supersound process is 5～10 minutes in the adding 50ml ethanol, adds polyimide 5g, polyether-ether-ketone 30g and graphite 5g then, and ultrasonication mixed in 15 minutes again.With this mixture with the method for vacuum and heating drying remove desolvate and steam after, put into the mould heat pressure moulding.Be forced into 3MPa,, treat that temperature rises to 300 ℃ with the heat-up rate intensification of 10 ℃/min, constant temperature 15 minutes is forced into 5MPa then, and continues to be warming up to 370 ℃, constant temperature 30 minutes, naturally cooling under the pressurize condition is reduced to 100 ℃ when die temperature and is got final product with bottom knockout then.Material property satisfies These parameters.In above-mentioned hot pressing, the venting in 5 minutes of every interval once.Embodiment 4
Take by weighing nanometer silicon carbide 3g, add 50ml ethanol, use ultrasonication 5 minutes.The polyimide 15g and polyether-ether-ketone 15g and the graphite 5g that add the meltability take by weighing, ball milling be after 4 hours, and except that desolvating and steam, it is hot-forming to put into mould with heating and vacuum drying method.Be forced into 3MPa,, treat that temperature rises to 340 ℃ with the heat-up rate intensification of 10 ℃/min, constant temperature 25 minutes is forced into 5MPa then, and continues to be warming up to 380 ℃, constant temperature 25 minutes is used the ice quick cooling then under the pressurize condition, get final product with bottom knockout when die temperature drops to 100 ℃.Material property satisfies These parameters.The venting in 5 minutes of every interval once in above-mentioned hot pressing.Embodiment 5
Take by weighing nanometer silicon carbide 2g, nano silicon 1g, add ethanol 50ml, add polyimide 5g and the polyether-ether-ketone 40g and the graphite 10g of meltability after 15 minutes with ultrasonication, ball milling 3 hours is removed wherein solvent and steam with this mixture with infrared baking then.Put into mould hot pressing, be forced into 3MPa, heat-up rate with 10 ℃/min heats up, treat that temperature rises to 320 ℃, constant temperature 15 minutes is forced into 5MPa then, and continue to be warming up to 370 ℃, constant temperature 20 minutes, naturally cooling under the pressurize condition gets final product with bottom knockout when die temperature drops to 100 ℃ then.Material property satisfies These parameters.The venting in 5 minutes of every interval once in above-mentioned hot pressing.
Claims (2)
1. water-proof antiwear self-lubricating polymer composite is characterized in that forming weight percentage and is:
Polyether-ether-ketone 35～80
Polyimide 5～50
Graphite 5～40
Nanometer silicon carbide 2.5～20
Nano silicon 0～20
Wherein, the mean particle dia of nanometer silicon carbide and nano silicon is less than 100nm, and the particle diameter of graphite is less than 25 μ m, and the viscosity of polyether-ether-ketone is η=0.6～0.9; Polyimide is an ANALYSIS OF MOLDABLE POLYIMIDES.
2. preparation methods according to claim 1 is characterized in that:
(1) take by weighing nanometer silicon carbide 2.5～20 and silicon-dioxide 0～20, adding is enough to make the material profit
Wet solvent is handled with ultrasonic wave, and it fully is uniformly dispersed, and the solvent that is added can
Being ethanol, and a kind of in the chlorinated hydrocarbon solvent;
(2) take by weighing polyether-ether-ketone 35～80 and polyimide 5～50 and graphite 5～40, be added to by
(1) in the made nanoparticle dispersion liquid, handle with the method for ultrasonic wave or ball milling,
Thorough mixing is uniformly dispersed, and makes its drying;
(3) mixture after will handling by (2) be put into mould, be forced into 3MPa, then with
10 ℃/minute heat-up rate heats up, and treats that temperature rises to 300～350 ℃, constant temperature 15 minutes,
Be forced into 5～15MPa then, and continue to be warming up to 360～380 ℃, constant temperature 10～60 minutes,
Under the pressurize condition, cool off then, adopt naturally cooling or make mould with the method for icing quick cooling
Temperature drops to 100 ℃ with bottom knockout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106677 CN1270188A (en) | 2000-04-17 | 2000-04-17 | Water-proof antiwear self-lubricating material and preparing process thereof |
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| CN 00106677 CN1270188A (en) | 2000-04-17 | 2000-04-17 | Water-proof antiwear self-lubricating material and preparing process thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348652C (en) * | 2006-04-12 | 2007-11-14 | 福州大学 | Novel self-lubricating polymer composite material and its prepn process |
| CN103320092A (en) * | 2013-06-14 | 2013-09-25 | 陕西科技大学 | Method for preparing wet friction material of nano silicon carbide modified carbon cloth |
| CN103762437A (en) * | 2013-12-31 | 2014-04-30 | 镇江蓝箭电子有限公司 | Method for manufacturing medium support of high-performance radio-frequency coaxial connector |
| CN105524407A (en) * | 2015-11-03 | 2016-04-27 | 南京肯特复合材料有限公司 | PEEK composite material with high heat resistance and preparation method thereof |
| CN105713347A (en) * | 2014-12-05 | 2016-06-29 | 黑龙江鑫达企业集团有限公司 | Modified material for transmission gear of automobile air conditioner and preparation method thereof |
| CN105823664A (en) * | 2016-05-11 | 2016-08-03 | 上海瀚海检测技术股份有限公司 | Separation and detection method of PEEK in PEEK/TPI composite material |
| CN106751442A (en) * | 2016-11-11 | 2017-05-31 | 中国科学院兰州化学物理研究所 | A kind of multivariant oxide filling polyether-ether-ketone base self-lubricating nano composite material and preparation method thereof |
| CN108164924A (en) * | 2017-11-28 | 2018-06-15 | 中国科学院兰州化学物理研究所 | It is a kind of suitable for polymer composites of seawater boundary lubrication operating mode and preparation method thereof |
| CN111303628A (en) * | 2020-03-16 | 2020-06-19 | 中国科学院兰州化学物理研究所 | Polyimide self-lubricating composite material and preparation method thereof |
-
2000
- 2000-04-17 CN CN 00106677 patent/CN1270188A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348652C (en) * | 2006-04-12 | 2007-11-14 | 福州大学 | Novel self-lubricating polymer composite material and its prepn process |
| CN103320092A (en) * | 2013-06-14 | 2013-09-25 | 陕西科技大学 | Method for preparing wet friction material of nano silicon carbide modified carbon cloth |
| CN103762437A (en) * | 2013-12-31 | 2014-04-30 | 镇江蓝箭电子有限公司 | Method for manufacturing medium support of high-performance radio-frequency coaxial connector |
| CN105713347A (en) * | 2014-12-05 | 2016-06-29 | 黑龙江鑫达企业集团有限公司 | Modified material for transmission gear of automobile air conditioner and preparation method thereof |
| CN105524407A (en) * | 2015-11-03 | 2016-04-27 | 南京肯特复合材料有限公司 | PEEK composite material with high heat resistance and preparation method thereof |
| CN105823664A (en) * | 2016-05-11 | 2016-08-03 | 上海瀚海检测技术股份有限公司 | Separation and detection method of PEEK in PEEK/TPI composite material |
| CN105823664B (en) * | 2016-05-11 | 2018-06-29 | 上海瀚海检测技术股份有限公司 | The separation of PEEK and detection method in PEEK/TPI composite materials |
| CN106751442A (en) * | 2016-11-11 | 2017-05-31 | 中国科学院兰州化学物理研究所 | A kind of multivariant oxide filling polyether-ether-ketone base self-lubricating nano composite material and preparation method thereof |
| CN106751442B (en) * | 2016-11-11 | 2018-09-25 | 中国科学院兰州化学物理研究所 | A kind of multivariant oxide filling polyether-ether-ketone base self-lubricating nanocomposite and preparation method thereof |
| CN108164924A (en) * | 2017-11-28 | 2018-06-15 | 中国科学院兰州化学物理研究所 | It is a kind of suitable for polymer composites of seawater boundary lubrication operating mode and preparation method thereof |
| CN111303628A (en) * | 2020-03-16 | 2020-06-19 | 中国科学院兰州化学物理研究所 | Polyimide self-lubricating composite material and preparation method thereof |
| CN111303628B (en) * | 2020-03-16 | 2021-03-23 | 中国科学院兰州化学物理研究所 | Polyimide self-lubricating composite material and preparation method thereof |
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