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A kind of preparation method of the microemulsion that forms the nanoemulsion of high stability in situ
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A nano-emulsion, high-stability technology, applied in mixing methods, chemical instruments and methods, dissolution, etc., can solve problems such as delamination and loss of effect, and achieve good long-term stability, easy transportation, and good stability
Inactive Publication Date: 2016-03-23
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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[0003] The inventor had previously applied for "A Multifunctional Drilling Fluid Additive and Its Preparation Method and Application". The nanoemulsion in this patent has good lubrication and other effects, but after being placed in a high and low temperature environment for a period of time, it is prone to delamination, etc. phenomenon, lose its original effect
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Embodiment 1
[0019] Based on 100 parts by weight, get 76 parts of white oil, 8.36 parts of Span80, 10.64 parts of Tween80, 0.1 part of CTAB, 5 parts of water, wherein there are 19 parts of Span80 and Tween80, and the weight ratio of the two is 11:14. Then put them together in a reactor to mix evenly, and stir at a speed of 500 rpm for 10 minutes at normal temperature to make a microemulsion.
[0020] The nonionic surfactants used in the examples were all purchased from Sinopharm Chemical Reagent Co., Ltd. (No. 52, Ningbo Road, Shanghai, 200002), and the cationic surfactants were purchased from Alpha Aisha (Tianjin) Chemical Co., Ltd. (Chaoyang District, Beijing 1509 CBD International Building, No. 16 Yongan Dongli, Zip code 100022).
[0021] The microemulsion high temperature stability, long-term stability, low temperature stability and the particle size distribution of the nanoemulsion formed in situ after dilution were investigated respectively according to the following methods:
[002...
Embodiment 2
[0032] Based on 100 parts by weight, take 45 parts of liquid paraffin, 19.8 parts of Span80, 25.2 parts of Tween80, 2 parts of CTAB and 8 parts of water, wherein there are 45 parts of Span80 and Tween80, and the weight ratio of the two is 11:14 (0.7857). Dissolve 2 parts of CTAB in 8 parts of water to obtain the water phase; then mix 45 parts of liquid paraffin, 19.8 parts of Span80 and 25.2 parts of Tween80 with the prepared water phase in the reactor, and stir at 300 rpm for 15 Microemulsions can be prepared in minutes.
[0033] Detected by the method described in Example 1, the results are as follows:
[0034]
[0035]
Embodiment 3
[0037] Based on 100 parts by weight, get 76 parts of white oil, 8.36 parts of Span80, 10.64 parts of Tween80, 1 part of DODMAC, 4 parts of water, wherein there are 19 parts of Span80 and Tween80, and the weight ratio of the two is 11:14. Then put them together in a reactor to mix evenly, and stir at a speed of 150 rpm for 40 minutes at normal temperature to make a microemulsion.
[0038] Detected by the method described in Example 1, the results are as follows:
[0039]
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Abstract
The invention relates to a preparation method of a microemulsion for forming a nano emulsion with high stability in situ, and belongs to the technical field of nano emulsion preparation. The method is characterized by at least comprising the following steps: respectively weighing the following components in 100 parts by weight: 45-76 parts of oil phase, 19-45 parts of nonionic surfactant, 0-2.5 parts of inorganic salt, 0.1-2 parts of cationic surfactant and the balance of water, subsequently dissolving the weighed cationic surfactant and the inorganic salt into water so as to obtain water phase, further uniformly mixing the weighed oil phase and the nonionic surfactant with the prepared water phase, adding into a flask so as to obtain the microemulsion which can be prepared into the nano emulsion with high stability in situ. The invention provides the method for preparing the microemulsion for forming the nano emulsion with high stability in situ, and the microemulsion is low in cost and is not easy to cause phenomena such as layering when being put into high and low environment.
Description
technical field [0001] The invention belongs to the technical field of nanoemulsion preparation. The invention relates to a method for preparing a microemulsion which forms a highly stable nanoemulsion in situ. Background technique [0002] Nanoemulsions are widely used in petroleum exploration, medicine, food, building energy saving, concrete water saving maintenance, agriculture, paper making, wood-based panels, special ceramics, light industry and other fields. [0003] The inventor had previously applied for "A Multifunctional Drilling Fluid Additive and Its Preparation Method and Application". The nanoemulsion in this patent has good lubrication and other effects, but after being placed in a high and low temperature environment for a period of time, it is prone to delamination, etc. Phenomenon, lose the original effect. Contents of the invention [0004] The invention provides a method for preparing a microemulsion that forms a highly stable nanoemulsion in situ wit...
Claims
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