CN103033589A - Method for evaluating colloid stability of detergent - Google Patents
Method for evaluating colloid stability of detergent Download PDFInfo
- Publication number
- CN103033589A CN103033589A CN2011103025045A CN201110302504A CN103033589A CN 103033589 A CN103033589 A CN 103033589A CN 2011103025045 A CN2011103025045 A CN 2011103025045A CN 201110302504 A CN201110302504 A CN 201110302504A CN 103033589 A CN103033589 A CN 103033589A
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- Prior art keywords
- detersive
- solvent
- colloidal stability
- evaluation method
- detergent
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- 239000000084 colloidal system Substances 0.000 title abstract description 17
- 238000000034 method Methods 0.000 title abstract description 16
- 239000003599 detergent Substances 0.000 title abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 238000011156 evaluation Methods 0.000 claims abstract description 20
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims abstract description 8
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 238000004821 distillation Methods 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 9
- 239000002184 metal Substances 0.000 description 5
- 238000005530 etching Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to a method for evaluating colloid stability of a detergent and mainly aims at solving the problem that the colloid stability of the detergent can not be visually evaluated by the prior art. The problem is well solved by the adoption of a technical scheme which comprises the following steps in sequence: a) stirring and uniformly mixing the detergent with a solvent at the temperature of 10-50 DEG C, thus obtaining a mixture A, wherein the solvent is selected from at least one of petroleum ether, n-heptane or n-pentane with a distillation range of 60-90 DEG C or 90-120 DEG C; and b) enabling the mixture A to stand for 24-120h, observing the quantity of precipitates and evaluating the colloid stability of the detergent according to the quantity of the precipitates. The method can be used for evaluation on the colloid stability of the detergent in industrial production.
Description
Technical field
The present invention relates to the colloid-stabilised evaluation method of a kind of detersive.
Background technology
Detersive is one of adjuvant kind of consumption maximum in the lubricating oil, and about 900,000 tons of global Year's consumption accounts for whole additive amount 20%.The major function of detersive be neutral lubrication oil because of acidic materials that high-temperature oxydation produces, prevent the corrosion of engine metal; Can adsorb simultaneously oil product under hot conditions because of colloid, the greasy filth of long oxidation polymerization and the polar material that some are harmful, suppress their and form the sedimental tendencies such as greasy filth, paint film and carbon deposit.Detersive commonly used mainly contains the types such as sulfonate, alkyl monosulfide phenates, salicylate, naphthenic base salt.
Detersive generally is comprised of oil solution, basic component (carbonate or metal hydroxides), polar group and non-polar group four parts, hydrophilic polar group and the non-polar group of oleophylic have formed two property compounds, and with the basic component containing wherein, be colloid.When detersive was added in the lubricating oil, the colloid in the detersive was to exist with monomolecular dissolved state.When running into the metal surface, polar group hydrophilic in the detersive colloid can be adsorbed in the metal surface, and that end of the non-polar group of another oleophylic is then towards oil phase.When oil product produces acidic materials because of oxidation, can discharge a certain amount of basic component in the colloid and neutralize with it.When producing non-oil-soluble colloid, solia particle and other polar material in the oil product, the polar group in the detersive can be adsorbed, and is dispersed in the oil phase.
Because detersive mainly produces peace and quiet effect by colloid, so colloid is stable most important, and can it be mainly manifested in basic component and remain in the colloid chronically, and mainly and particle size and the particle diameter shape of basic component direct relation is arranged.At present, the method that does not also have generally acknowledged evaluation detersive colloidal stability in the industry, the someone adopts freeze etching technique to pass judgment on roughly (the research of detergent for lubricating oil colloform texture and property relationship of the colloidal stability of detersive before, petroleum refining and chemical industry, 1996,27 (3), 60～63).The cardinal principle of freeze etching technique is by transmission electron microscope the type of solid particle in the colloid (amorphous or crystal formation) to be made a video recording into shadow with the particle diameter of solid particle, it is generally acknowledged that the basic component particle diameter in the colloid is less, colloidal stability may be relatively good.Freeze etching need to adopt the equipment such as freezing cutter, high vacuum spraying plating instrument, temperature adding controller and transmission electron microscope usually.The concrete practice is through behind the liquid nitrogen frozen with detersive, cut part chip solid sample by freezing cutter, process " rinsing " in organic solvent, oil solution in the flush away detersive, the solid that obtains " bone " is heated through high vacuum spraying plating instrument spraying plating and temperature adding controller, the last granularity in the observing colloid and uniformity coefficient and the shaping of taking a picture under transmission electron microscope.This method generally can obtain definite reliably picture information, and but, if the colloidal particle size size distribution is wider, so small particle is easy to be covered by bulky grain, can cause localized distortion.In addition, the analytical cycle of freeze etching is longer, generally needs 2 days, and analysis cost is also expensive.
Summary of the invention
Technical matters to be solved by this invention be prior art exist can not visual evaluation detersive colloidal stability problem, a kind of evaluation method of new detersive colloidal stability is provided.The method energy visual evaluation detersive colloidal stability, method is simple, and expense is cheap.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of evaluation method of detersive colloidal stability may further comprise the steps successively:
A) detersive and solvent are stirred under 10～50 ℃ of conditions of temperature, mix, obtain potpourri A; Selected solvent is selected from least a in sherwood oil, normal heptane or the n-pentane that boiling range is 60～90 ℃ or 90～120 ℃;
B) potpourri A was left standstill 24～120 hours, observe precipitation quantity, estimate the detersive colloidal stability with this.
In the technique scheme, step a) in the volume ratio of detersive and solvent be (1: 9)～(1: 1), preferable range is (1: 9)～(2: 8).Step a) middle preferable range temperature is 20～40 ℃.Step a) mixing time is 5～30 minutes, and preferable range is 10～30 minutes.Described solvent preferred version is that to be selected from boiling range be at least a in 60～90 ℃ sherwood oil or the normal heptane.Step b) the time of repose preferable range of potpourri A is 48～72 hours in.
The present invention is by observing detersive and the precipitation quantity of the formed potpourri of solvent after leaving standstill a period of time, estimate the detersive colloidal stability, method is simple, and expense is cheap, and and have good correlativity between the evaluation of the actual performance of detersive, obtained preferably technique effect.
The present invention is further elaborated below by embodiment.
Embodiment
[embodiment 1～6]
In mixing temperature, type of solvent with leave standstill under the identical state of fate, change the volume ratio of detersive and solvent, estimate the colloidal stability difference of 2 sulfonate of the same type.
Table 1
*: the volume ratio of detersive and solvent.
As can be seen from Table 1, in the sulfonate of same type, along with reducing of the volume ratio of detersive and solvent, its precipitation capacity also reduces thereupon.Illustrate that the inventive method has differentiation for the detersive with different colloidal stabilities.
[embodiment 7～11]
To identical product T106B-2, in the situation of the volume ratio (5: 5) of same mixture temperature (30 ℃), same solvent (60～90 ℃ of sherwood oils), same detersive and solvent, investigate the situation of change of precipitation capacity under different time of repose.
Table 2
As can be seen from Table 2, along with the prolongation of time of repose, the quantity of its precipitation also increases thereupon, but after 72 hours, the precipitation capacity increasing degree is less.
[embodiment 12～20]
The laboratory adopts " crankcase simulation test method (QZX method) SH/T 0300-1992 " to estimate the detergency of detersive usually.The I. C. engine oil that the method mainly will contain detersive is splashed to the high-temperature metal surface and forms paint film, simulates the lacquering situation of I. C. engine oil when the pistons work with this, resits an exam and examines the detergency of oil product by measuring glue on the sheet metal.On the other hand, detersive belongs to the host in the I. C. engine oil, it is higher to add dosage, can directly affect the storage stability of oil product, the laboratory is generally measured by oil product at high temperature being deposited the precipitation capacity that forms behind the certain hour (such as 105 ℃, 7 days), evaluates the compatibility of detersive and base oil with this.The detersive that several colloidal stabilities are different is modulated in diesel engine oil CD15W-40 and the middling speed machine oil 4030 in the table 3, measures respectively its detergency and storage stability.
The test condition that [embodiment 12～15] estimate colloidal stability is: the blending temperature 50 C, and solvent is normal heptane, and the volume ratio of detersive and solvent is 1: 9, and time of repose is 2 days.
The test condition that [embodiment 16～20] estimate colloidal stability is: 40 ℃ of blending temperature, and solvent is n-pentane, and the volume ratio of detersive and solvent is 2: 8, and time of repose is 2 days.
Table 3
From table 3, can see, adopt the detersive of the different colloidal stabilities that evaluation method of the present invention distinguishes, in detergency and storage stability test, has equally good differentiation, it is the good detersive of colloidal stability, good performance is also arranged in detergency and storage stability test, illustrate between the actual performance evaluation of evaluation method of the present invention and detersive to have good correlativity.
Claims (8)
1. the evaluation method of a detersive colloidal stability may further comprise the steps successively:
A) detersive and solvent are stirred under 10～50 ℃ of conditions of temperature, mix, obtain potpourri A; Selected solvent is selected from least a in sherwood oil, normal heptane or the n-pentane that boiling range is 60～90 ℃ or 90～120 ℃;
B) potpourri A was left standstill 24～120 hours, observe precipitation quantity, estimate the detersive colloidal stability with this.
2. the evaluation method of described detersive colloidal stability according to claim 1 is characterized in that the volume ratio of detersive and solvent was (1: 9)～(1: 1) during step a).
3. the evaluation method of described detersive colloidal stability according to claim 2 is characterized in that the volume ratio of detersive and solvent was (1: 9)～(2: 8) during step a).
4. the evaluation method of described detersive colloidal stability according to claim 1 is characterized in that temperature is 20～40 ℃ during step a).
5. the evaluation method of described detersive colloidal stability according to claim 1, it is characterized in that step a) mixing time be 5～30 minutes.
6. the evaluation method of described detersive colloidal stability according to claim 5, it is characterized in that step a) mixing time be 10～30 minutes.
7. the evaluation method of described detersive colloidal stability according to claim 1 is characterized in that it is at least a in 60～90 ℃ sherwood oil or the normal heptane that described solvent is selected from boiling range.
8. the evaluation method of described detersive colloidal stability according to claim 1 is characterized in that step b) in the time of repose of potpourri A be 48～72 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110302504.5A CN103033589B (en) | 2011-10-09 | 2011-10-09 | Method for evaluating colloid stability of detergent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110302504.5A CN103033589B (en) | 2011-10-09 | 2011-10-09 | Method for evaluating colloid stability of detergent |
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| Publication Number | Publication Date |
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| CN103033589A true CN103033589A (en) | 2013-04-10 |
| CN103033589B CN103033589B (en) | 2015-04-15 |
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| CN201110302504.5A Active CN103033589B (en) | 2011-10-09 | 2011-10-09 | Method for evaluating colloid stability of detergent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043931A (en) * | 2015-07-13 | 2015-11-11 | 中国石油集团渤海钻探工程有限公司 | Method for measuring settlement stability of pad fluid or post-pad fluid for well cementation |
| CN108267375A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | Detergent micelle stability testing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871086A (en) * | 2003-07-17 | 2006-11-29 | 旭化成医疗株式会社 | Metal colloid solution |
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2011
- 2011-10-09 CN CN201110302504.5A patent/CN103033589B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871086A (en) * | 2003-07-17 | 2006-11-29 | 旭化成医疗株式会社 | Metal colloid solution |
Non-Patent Citations (4)
| Title |
|---|
| 付兴国 等: "烷基水杨酸盐系列产品胶体稳定性研究", 《润滑油科技情报站论文专辑》, 31 October 2000 (2000-10-31) * |
| 姚文钊 等: "烷基水杨酸盐的胶体结构与其稳定性关系研究", 《润滑油》, vol. 16, no. 2, 30 April 2001 (2001-04-30) * |
| 梁生荣: "纳米磺酸钙镁复合清净剂的合成、性能与机理研究", 《中国博士学位论文数据库——工程科技Ⅰ辑》, 15 August 2011 (2011-08-15) * |
| 邵伟: "《物理化学》", 1 July 2000, article "第四节 胶体的稳定性" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043931A (en) * | 2015-07-13 | 2015-11-11 | 中国石油集团渤海钻探工程有限公司 | Method for measuring settlement stability of pad fluid or post-pad fluid for well cementation |
| CN105043931B (en) * | 2015-07-13 | 2018-08-24 | 中国石油集团渤海钻探工程有限公司 | A kind of sedimentation stability measurement method of well cementation prepad fluid or after pad |
| CN108267375A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | Detergent micelle stability testing method |
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| CN103033589B (en) | 2015-04-15 |
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