CN103665938A - Preparation of surface modified magnesium borate crystal whiskers and application of surface modified magnesium borate crystal whiskers to lubricating oil - Google Patents
Preparation of surface modified magnesium borate crystal whiskers and application of surface modified magnesium borate crystal whiskers to lubricating oil Download PDFInfo
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- CN103665938A CN103665938A CN201310634399.4A CN201310634399A CN103665938A CN 103665938 A CN103665938 A CN 103665938A CN 201310634399 A CN201310634399 A CN 201310634399A CN 103665938 A CN103665938 A CN 103665938A
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- magnesium borate
- borate crystal
- crystal whisker
- lubricating oil
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Abstract
The invention relates to a chemical surface modification technology of magnesium borate crystal whiskers and in particular relates to preparation of surface modified magnesium borate crystal whiskers and application of the surface modified magnesium borate crystal whiskers to lubricating oil. According to the preparation method, a borate coupling agent is adopted as a modifying agent, the magnesium borate crystal whiskers are modified through a chemical surface modification process, the surface modified magnesium borate crystal whiskers are used as extreme pressure anti-wear additives of the lubricating oil, and the addition amount of the surface modified magnesium borate crystal whiskers is 0.1%-1%. The surface modified magnesium borate crystal whiskers can be stably dispersed in mineral base oil for a long term, and the anti-wear performance of the base oil is remarkably improved after the surface modified magnesium borate crystal whiskers are added.
Description
Technical field
The present invention relates to magnesium borate crystal whisker surface chemistry method modification technology, particularly a kind of preparation of surface modification magnesium borate crystal whisker and the application in lubricating oil.
Background technology
Lubricating oil is to be used in various types of automobiles, mechanical means to rub to reduce, protection machinery and workpiece
liquidlubricant, mainly plays the effects such as lubricated, cooling, antirust, clean, sealing and buffering.Lubricating oil is generally comprised of base oil and additive two portions.Base oil is lubricated main body of oil, is determining the essential property of lubricating oil, and additive can make up and improve the deficiency of base oil aspect of performance, gives some new performance, is the important component part of lubricating oil.Lubricant base mainly divides mineral base oil, synthetic base oil and biological basis oil three major types.
The common indication of magnesium borate crystal whisker is Mg
2b
2o
5, also claim pyroboric acid magnesium whisker.Magnesium borate crystal whisker lightweight, high-ductility, wear-resisting, resistance to highly basic, anti-oxidant, corrosion-resistant, high temperature resistant, good insulating, difficult by concentrated base etch, be slightly soluble in water, it is neutral that the aqueous solution is, its purposes is mainly as Material reinforcement body, can strengthen the matrix materials such as toughening polymer base (as plastics, resin), metal matrix (as aluminium base, magnesium base), ceramic base, in fields such as aerospace, communications and transportation, plastics, chemical industry, metallurgy, machinery, oil, electronics, national defence, obtain applying more and more widely.
At present, research finds that magnesium borate crystal whisker can be dispersed in organic solution preferably, and still, magnesium borate crystal whisker can not long-term stability be scattered in lubricating oil.Therefore, need to be to magnesium borate crystal whisker modifying surface, reduce its surface can and polarity, strengthen the consistency of itself and lubricating oil.
Summary of the invention
The present invention is directed to deficiency of the prior art, in order to overcome magnesium borate crystal whisker, cannot long-term stability be scattered in lubricating oil, organic modification has been carried out in magnesium borate crystal whisker surface, thereby it can long-term stability be scattered in lubricating oil system, a kind of preparation method of surface modification magnesium borate crystal whisker and the application in lubricating oil are provided.
Technical scheme of the present invention is:
A surface modification magnesium borate crystal whisker, the preparation method of described surface modification magnesium borate crystal whisker adopts boric acid ester coupler as properties-correcting agent, by surface chemistry method modified technique, magnesium borate crystal whisker is carried out to modification, and concrete step is as follows:
Under (1) 100～120 ℃ of condition, fully dry magnesium borate crystal whisker, remove whisker surface adsorption moisture;
(2), under 40～60 ℃ of conditions, using 100 parts of dehydrated alcohols fully to dissolve mass ratio is the boric acid ester coupler of 1～4 part, preparation surface-modifying agent;
(3) appropriate magnesium borate crystal whisker is joined in a certain amount of surface-modifying agent to sonic oscillation 60min;
(4) use dehydrated alcohol that previous step gained magnesium borate crystal whisker is carried out to repeated multiple times suction filtration, washing;
(5) the surface modification magnesium borate crystal whisker in step (4) is dried to 3～4h at 100～120 ℃.
The molecular formula of described boric acid ester coupler is: C
3h
7oB (OCOC
15h
31)
2.
Magnesium borate crystal whisker is after boric acid ester coupler modification, be adsorbed on alkoxyl group in the boric acid ester coupler on magnesium borate crystal whisker surface and the hydroxyl generation chemical reaction on whisker surface, between forms B-O chemistry and builds, and the other end of coupling agent has alkyl, acyloxy and ester group long-chain, magnesium borate crystal whisker is organised, thereby reach the object of surface modification.
The invention also discloses the application of described surface modification magnesium borate crystal whisker in lubricating oil, the extreme-pressure anti-friction additive by described surface modification magnesium borate crystal whisker as lubricating oil, the add-on of described surface modification magnesium borate crystal whisker is 0.1-1%.
Preferably, to join the optimum quantity of lubricating oil be 0.8% to described surface modification magnesium borate crystal whisker.
Magnesium borate crystal whisker after a certain amount of surface modification is joined in hydrogenated base oil 500N, find that it can long-term stability be scattered in wherein.This base oil is carried out to supporting capacity test (four ball methods), and experimental result shows, after adding surface modification magnesium borate crystal whisker, the abrasion resistance of base oil has had and significantly improves.
Accompanying drawing explanation
Accompanying drawing 1 is the deployment conditions comparison diagram in hydrogenated base oil 500N before and after magnesium borate crystal whisker modification.
Wherein, A is that unmodified magnesium borate crystal whisker joins in lubricating oil (after one week), and at the bottom of unstable be deposited in bottle, B is that after surface modification, magnesium borate crystal whisker joins (one week afterwards) in lubricating oil, and long-term stability is scattered in wherein.
Embodiment
Embodiment 1:
The magnesium borate crystal whisker sample that this example adopts is provided by Liaoning Yingkou Xiongdi Boron Magnesium Chemical Co., Ltd..The surface modifying treatment of magnesium borate crystal whisker is:
(1) under 100～120 ℃ of conditions, dry magnesium borate crystal whisker sample, remove whisker surface adsorption moisture.
(2), under 40～60 ℃ of conditions, using 100 parts of dehydrated alcohols fully to dissolve mass ratio is the boric acid ester coupler of 1～4 part, preparation surface-modifying agent.
(3) appropriate magnesium borate crystal whisker is joined in a certain amount of surface-modifying agent, fully stirring, sonic oscillation 60min;
(4) previous step products obtained therefrom is carried out to suction filtration, use dehydrated alcohol to wash, so repeated multiple times.
(5) magnesium borate crystal whisker of previous step gained is dried to 3～4h at 100～120 ℃, obtain the magnesium borate crystal whisker of final surface modification.
(6) 0.1 part of surface modification magnesium borate crystal whisker is joined in 99.9 parts of hydrogenated base oil 500N, under 60 ℃ of conditions, stir 40min, fully mix, modulation sample.
Embodiment 2
The surface modifying treatment of magnesium borate crystal whisker is with embodiment 1.
0.2 part of surface modification magnesium borate crystal whisker is joined in 99.8 parts of hydrogenated base oil 500N, under 60 ℃ of conditions, stir 40min, fully mix, modulation sample.
Embodiment 3
The surface modifying treatment of magnesium borate crystal whisker is with embodiment 1.
0.5 part of surface modification magnesium borate crystal whisker is joined in 99.7 parts of hydrogenated base oil 500N, under 60 ℃ of conditions, stir 40min, fully mix, modulation sample.
Embodiment 4
The surface modifying treatment of magnesium borate crystal whisker is with embodiment 1.
0.8 part of surface modification magnesium borate crystal whisker is joined in 99.2 parts of hydrogenated base oil 500N, under 60 ℃ of conditions, stir 40min, fully mix, modulation sample.
Embodiment 5
The surface modifying treatment of magnesium borate crystal whisker is with embodiment 1.
1 part of surface modification magnesium borate crystal whisker is joined in 99 parts of hydrogenated base oil 500N, under 60 ℃ of conditions, stir 40min, fully mix, modulation sample.
The supporting capacity test list of the different add-ons of table 1 surface modification magnesium borate crystal whisker
| Project | Hydrogenated base oil 500N | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| P B/N | 576 | 657 | 723 | 725 | 753 | 742 |
| P D/N | 1320 | 1560 | 1600 | 1600 | 1680 | 1650 |
| WSD/mm | 0.67 | 0.46 | 0.39 | 0.38 | 0.36 | 0.37 |
Claims (4)
1. a surface modification magnesium borate crystal whisker, is characterized in that the preparation method of described surface modification magnesium borate crystal whisker adopts boric acid ester coupler as properties-correcting agent, by surface chemistry method modified technique, magnesium borate crystal whisker is carried out to modification, and concrete step is as follows:
Under (1) 100～120 ℃ of condition, fully dry magnesium borate crystal whisker, remove whisker surface adsorption moisture;
(2), under 40～60 ℃ of conditions, using 100 parts of dehydrated alcohols fully to dissolve mass ratio is the boric acid ester coupler of 1～4 part, preparation surface-modifying agent;
(3) appropriate magnesium borate crystal whisker is joined in a certain amount of surface-modifying agent to sonic oscillation 60min;
(4) use dehydrated alcohol that previous step gained magnesium borate crystal whisker is carried out to repeated multiple times suction filtration, washing;
(5) the modification magnesium borate crystal whisker in step (4) is dried to 3～4h at 100～120 ℃.
2. magnesium borate crystal whisker modified technique according to claim 1, is characterized in that: the molecular formula of described boric acid ester coupler is: C
3h
7oB (OCOC
15h
31)
2.
3. a surface modification magnesium borate crystal whisker according to claim 1 application in lubricating oil, it is characterized in that: the extreme-pressure anti-friction additive by described surface modification magnesium borate crystal whisker as lubricating oil, the amount that described surface modification magnesium borate crystal whisker joins lubricating oil is 0.1-1%, and stirs 40min under 60 ℃ of conditions.
4. the application of surface modification magnesium borate crystal whisker according to claim 3 in lubricating oil, is characterized in that the amount that described surface modification magnesium borate crystal whisker joins lubricating oil is 0.8%.
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648675A (en) * | 2017-09-16 | 2018-02-02 | 常州富思通管道有限公司 | A kind of preparation method of high-strength bone internal fixation material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321395A (en) * | 2011-08-30 | 2012-01-18 | 成都理工大学 | Method for surface modification of magnesium borate crystal whisker by using borate coupling agent |
| CN102504414A (en) * | 2011-11-28 | 2012-06-20 | 成都理工大学 | Preparation method of modified magnesium borate whisker/PP (propene polymer) composite material |
-
2013
- 2013-12-02 CN CN201310634399.4A patent/CN103665938A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321395A (en) * | 2011-08-30 | 2012-01-18 | 成都理工大学 | Method for surface modification of magnesium borate crystal whisker by using borate coupling agent |
| CN102504414A (en) * | 2011-11-28 | 2012-06-20 | 成都理工大学 | Preparation method of modified magnesium borate whisker/PP (propene polymer) composite material |
Non-Patent Citations (1)
| Title |
|---|
| 马正先等: "硼酸镁晶须制备与应用研究进展", 《化工新型材料》, vol. 36, no. 8, 31 August 2008 (2008-08-31), pages 30 - 33 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648675A (en) * | 2017-09-16 | 2018-02-02 | 常州富思通管道有限公司 | A kind of preparation method of high-strength bone internal fixation material |
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Application publication date: 20140326 |