CN114344955A - Defoaming agent containing rare earth oxide and preparation method thereof - Google Patents
Defoaming agent containing rare earth oxide and preparation method thereof Download PDFInfo
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- CN114344955A CN114344955A CN202111454438.3A CN202111454438A CN114344955A CN 114344955 A CN114344955 A CN 114344955A CN 202111454438 A CN202111454438 A CN 202111454438A CN 114344955 A CN114344955 A CN 114344955A
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- 239000002518 antifoaming agent Substances 0.000 title claims abstract description 98
- 229910001404 rare earth metal oxide Inorganic materials 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title abstract description 22
- 229920002545 silicone oil Polymers 0.000 claims abstract description 82
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 52
- 239000008158 vegetable oil Substances 0.000 claims abstract description 52
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000001257 hydrogen Substances 0.000 claims abstract description 48
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 48
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 35
- 239000013530 defoamer Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 60
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 44
- 238000002156 mixing Methods 0.000 claims description 43
- 238000004945 emulsification Methods 0.000 claims description 27
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 21
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 13
- 239000004115 Sodium Silicate Substances 0.000 claims description 10
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000391 magnesium silicate Substances 0.000 claims description 10
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 10
- 235000019792 magnesium silicate Nutrition 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 239000002562 thickening agent Substances 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims 2
- 238000000527 sonication Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 25
- 239000003921 oil Substances 0.000 abstract description 13
- 235000019198 oils Nutrition 0.000 abstract description 13
- 230000009471 action Effects 0.000 abstract description 7
- 238000003892 spreading Methods 0.000 abstract description 5
- 230000007480 spreading Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000001804 emulsifying effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 16
- 239000006260 foam Substances 0.000 description 11
- 239000004359 castor oil Substances 0.000 description 10
- 235000019438 castor oil Nutrition 0.000 description 10
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 239000000839 emulsion Substances 0.000 description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 description 9
- 238000009210 therapy by ultrasound Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000005187 foaming Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- -1 polydimethylsiloxane Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 229940083037 simethicone Drugs 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention provides a defoaming agent containing rare earth oxide and a preparation method thereof, relating to the technical field of defoaming agents. The defoamer containing rare earth oxide mainly comprises the following raw materials in parts by weight: 0.15-1.2 parts of hydrogen-containing silicone oil, 1-3 parts of dimethyl silicone oil, 5-8 parts of vegetable oil, 1-1.5 parts of rare earth oxide, 1-2 parts of emulsifier and 8-12 parts of water. The defoamer containing rare earth oxide takes an oil product generated by the reaction of hydrogen-containing silicone oil and vegetable oil as a dispersion phase, takes water as a continuous phase, and uses dimethyl silicone oil to improve the spreading effect, so as to further improve the stability by using rare earth oxide. The hydrogen-containing silicone oil can increase the chain length of the vegetable oil, and has stronger stability, so that the defoaming agent has the characteristics of long service time and long action time, is suitable for a plurality of manufacturing processes, and has stronger applicability. The preparation method of the defoaming agent can ensure that the defoaming agent has a good emulsifying effect, so that the stability of the defoaming agent is enhanced.
Description
Technical Field
The invention relates to the technical field of defoaming agents, and particularly relates to a rare earth oxide-containing defoaming agent and a preparation method thereof.
Background
Bubbles and foam are common phenomena in daily life and work, such as washing, flotation, fire extinguishing, dust removal, and the manufacture of foamed plastics and foamed ceramics. The foam and froth needs to be eliminated because they have a negative impact on the product itself during its production and fabrication, e.g., in the fermentation, coating, paper, wastewater treatment, and printing industries.
It can be seen that the use of defoamers is of great interest in the industry where foam and suds are generated. However, the stability of the defoaming agent is poor, so that the defoaming agent needs to be repeatedly added for many times in the manufacturing industry, the complexity of the process is enhanced, the cost is increased, and the practicability is poor.
Based on the above, the application provides the defoaming agent which can effectively solve the problems and has high use value.
Disclosure of Invention
The invention aims to provide the defoamer containing the rare earth oxide, which has stronger stability, effectively prolongs the service life and the action time of the defoamer and has higher use value.
The invention also aims to provide a preparation method of the defoamer containing rare earth oxide, which can ensure that the emulsifying effect of the defoamer is better, thereby enhancing the stability of the defoamer.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
On one hand, the invention provides a defoaming agent containing rare earth oxide, which mainly comprises the following raw materials in parts by weight: 0.15-1.2 parts of hydrogen-containing silicone oil, 1-3 parts of dimethyl silicone oil, 5-8 parts of vegetable oil, 1-1.5 parts of rare earth oxide, 1-2 parts of emulsifier and 8-12 parts of water.
On the other hand, the invention provides a preparation method of a defoaming agent containing rare earth oxide, which mainly comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing to obtain a first mixture; mixing the mixture I with rare earth oxide, and homogenizing to obtain a mixture II; and adding the mixture II into water at the temperature of 90-120 ℃ for emulsification to prepare the defoaming agent.
The defoamer containing rare earth oxide and the preparation method thereof provided by the embodiment of the invention have at least the following beneficial effects:
on one hand, the invention provides a defoaming agent containing rare earth oxide, which mainly comprises the following raw materials in parts by weight: 0.15-1.2 parts of hydrogen-containing silicone oil, 1-3 parts of dimethyl silicone oil, 5-8 parts of vegetable oil, 1-1.5 parts of rare earth oxide, 1-2 parts of emulsifier and 8-12 parts of water. The defoamer containing rare earth oxide takes an oil product generated by the reaction of hydrogen-containing silicone oil and vegetable oil as a dispersion phase, takes water as a continuous phase, and uses dimethyl silicone oil to improve the spreading effect, so as to further improve the stability by using rare earth oxide. The hydrogen-containing silicone oil can increase the chain length of the vegetable oil, and has stronger stability, so that the defoaming agent has the characteristics of long service time and long action time, is suitable for a plurality of manufacturing processes, and has stronger applicability.
On the other hand, the invention also provides a preparation method of the defoamer containing rare earth oxide, and the preparation method can ensure that the emulsification effect of the defoamer is better, so that the stability of the defoamer is enhanced.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
The invention provides a defoaming agent containing rare earth oxide, which mainly comprises the following raw materials in parts by weight: 0.15-1.2 parts of hydrogen-containing silicone oil, 1-3 parts of dimethyl silicone oil, 5-8 parts of vegetable oil, 1-1.5 parts of rare earth oxide, 1-2 parts of emulsifier and 8-12 parts of water. The specific effects of the raw materials are as follows:
hydrogen-containing silicone oil: the hydrogen-containing silicone oil is silicone oil containing active hydrogen atoms in the main chain, and the structure of the hydrogen-containing silicone oil has active Si-H bonds, so that the hydrogen-containing silicone oil can react with various substances containing unsaturated bonds to introduce long-chain alkane, epoxy, fluorinated groups and the like, thereby causing the change of the physical and chemical properties of the hydrogen-containing silicone oil, and is applied to the fields of metal, building materials, leather and the like.
In the invention, the viscosity of the hydrogen-containing silicone oil is 25-30 mPas, and the active hydrogen mass fraction is 0.08%.
Dimethyl silicone oil: the dimethyl silicone oil is polydimethylsiloxane, is a hydrophobic organic silicon material, and is widely applied to the fields of medicines, daily chemical products, foods, buildings and the like. The dimethyl silicone oil is colorless and transparent in appearance, has the characteristics of no smell, high transparency and the like, and also has the advantages of heat resistance, cold resistance, small change of viscosity along with temperature, water resistance, small surface tension, heat conductivity, physiological inertia and good chemical stability.
It should be noted that, in the invention, when the dimethyl silicone oil is mixed with other raw materials and emulsified to prepare the defoaming agent, the spreading effect of the defoaming agent in an emulsion state in liquid can be better, so that the defoaming effect of the target defoaming liquid is better, and the defoaming range is larger.
Vegetable oil: vegetable oils are oils obtained from fruits, seeds and germs of plants, such as peanut oil, soybean oil, linseed oil, castor oil, rapeseed oil, etc., and mainly contain esters of straight-chain higher fatty acids and glycerin, and also contain various unsaturated acids.
It is to be noted here that castor oil as well as tung oil may be used in the present invention.
According to the invention, the hydrogen-containing silicone oil can react with the vegetable oil in the emulsification process, so that the expected crosslinking effect is achieved, and the chain length of the vegetable oil can be effectively increased, so that the stability of the defoaming agent is stronger, the service life and the action time are longer, further frequent addition of the defoaming agent in multiple steps of the production process is avoided, a better defoaming effect can be achieved, and the use value is higher.
Oxidizing rare earth: rare earth is a general name of seventeen metal elements including lanthanide elements, scandium and yttrium in the periodic table of elements. According to the invention, the rare earth oxide can improve the chemical resistance and stability of the defoaming agent. Specifically, the rare earth oxide has a certain absorption effect on external energy, so that when the external energy is generated, the rare earth oxide in the defoaming agent can absorb the energy, the defoaming agent is less affected by the external energy, and the stability of the defoaming agent is better.
Specifically, in the present invention, the rare earth oxide includes lanthanum oxide and cerium oxide. The lanthanum oxide can be used as a piezoelectric material, an electrothermal material, a thermoelectric material, a magnetoresistive material, a hydrogen storage material, a laser material and the like. The cerium oxide has an absorption effect on energy such as ultraviolet rays and infrared rays, and also has an absorption effect on heat. Therefore, when lanthanum oxide and cerium oxide are used as main raw materials of the defoaming agent, the stability of the defoaming agent can be effectively enhanced.
In the invention, the mass ratio of lanthanum oxide to cerium oxide is 1 (3-4). Under the condition of the proportion, lanthanum oxide can be matched with cerium oxide and uniformly loaded on the molecular structure of the vegetable oil, so that each part of the defoaming agent shows good stability and the using effect is good.
Emulsifier: the emulsifier is a substance capable of forming a stable emulsion of a mixed liquid of two or more mutually incompatible components, and has an effect of preventing droplets from aggregating with each other by reducing the interfacial tension of each component in the mixed liquid to form a relatively strong film on the surfaces of the droplets or forming an electric double layer on the surfaces of the droplets due to the electric charge given by the emulsifier, thereby uniformly distributing each component in the mixed liquid.
In the invention, the defoaming agent takes the water phase as a continuous phase and the oil phase as a dispersed phase, and then the dispersed phase and the continuous phase are combined by the emulsifier to prepare the defoaming agent with uniform texture, so that the using effect of the defoaming agent is better, for example, the target liquid can be uniformly defoamed, and the defoaming range is wider.
In the invention, the emulsifier can be selected from nonionic emulsifiers such as polyoxyethylene ether, polyoxypropylene ether, ethylene oxide and polyvinyl alcohol.
In conclusion, the defoamer containing rare earth oxide takes an oil product generated by the reaction of hydrogen-containing silicone oil and vegetable oil as a disperse phase, water as a continuous phase and dimethyl silicone oil to improve the spreading effect, so that the rare earth oxide further improves the stability. The hydrogen-containing silicone oil can increase the chain length of the vegetable oil, and has stronger stability, so that the defoaming agent has the characteristics of long service time and long action time, is suitable for a plurality of manufacturing processes, and has stronger applicability.
In the present invention, the defoaming agent further comprises 7 to 9 parts by weight of a carrier. When the carrier is added, the emulsion-shaped defoaming agent can be loaded on the carrier to form a solid defoaming agent, so that the emulsion-shaped defoaming agent is more convenient to store, transport and carry.
In the present invention, the carrier is prepared from sodium silicate and magnesium silicate. Wherein the sodium silicate is a mineral binder and is a soluble inorganic silicate. When it is used as a raw material for a carrier, it can allow droplets in an emulsion to adhere thereto, thereby making the carrier function better. Meanwhile, the stability of the defoaming agent powder can be enhanced.
The magnesium silicate is formed by interaction of magnesium salt and soluble silicon, and can promote adhesion between emulsion droplets and a carrier, so that the carrier with stronger stability is prepared.
In the invention, the mass ratio of the sodium silicate to the magnesium silicate is (2-4):1, and under the condition, the sodium silicate and the magnesium silicate can be matched to play a role, so that the stability of the carrier is better.
The invention also provides a preparation method of the defoamer containing rare earth oxide, which mainly comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing to obtain a first mixture; mixing the mixture I with rare earth oxide, and homogenizing to obtain a mixture II; and adding the mixture II into water at the temperature of 90-120 ℃ for emulsification to prepare the defoaming agent.
Specifically, the dimethyl silicone oil and the emulsifier are mixed, after uniform mixing, the hydrogen-containing silicone oil and the vegetable oil are sequentially added, and after uniform mixing, a mixture I is prepared. Wherein the simethicone and the emulsifier are uniformly mixed, and in order to fully mix the simethicone and the emulsifier, the mixture is stirred at the stirring speed of 150rpm-250rpm for 10min-30 min.
When the dimethyl silicone oil and the emulsifier are mixed uniformly, the hydrogen-containing silicone oil and the vegetable oil can be added into the mixture. It should be noted that, the vegetable oil or the hydrogen-containing silicone oil can be added first, and then another raw material is added after the vegetable oil or the hydrogen-containing silicone oil and the emulsifier are mixed uniformly. The vegetable oil or the hydrogen-containing silicone oil can be uniformly mixed in the disperse phase system and uniformly distributed, and on the basis, the vegetable oil and the hydrogen-containing silicone oil can quickly react by adding another raw material, and the oil phase with the chain length increased can be uniformly dispersed in the system, so that the defoaming agent emulsion is more uniform in texture and better in quality.
After the first mixture is prepared, the mixture can be mixed with rare earth oxide and homogenized to prepare a second mixture.
In detail, since the rare earth oxide is added in the form of a solid powder, when the rare earth oxide is mixed with the mixture, the solid powder is easily aggregated due to physical force of the surface, thereby increasing the operational difficulty of the mixing process.
In order to solve the problems, according to the invention, the rare earth oxide is added and then is homogenized, so that the rare earth oxide solid particles are uniformly dispersed in the system, and the rare earth oxide can be combined with sites in an oil phase, so that the effect of enhancing the stability of the defoaming agent is achieved. Meanwhile, the rare earth oxide can be prevented from falling off from the oil phase, and the influence on the target defoaming liquid can be avoided.
In the invention, the homogenizing pressure is 0.3MPa-0.4MPa, and the homogenizing time is 10min-30 min. Under the homogeneous pressure condition, the rare earth oxide can be more uniformly loaded on the oil phase substance, and can be more uniformly dispersed in the system, the preparation effect is better, so that the quality of the defoaming agent is superior, and the use value is higher.
And after the second mixture is prepared, adding the second mixture into water with the temperature of 90-120 ℃ for emulsification to prepare the defoaming agent. Because the solubility of the oil phase increases with increasing temperature, the emulsification between the oil phase and water is stronger when mixture two is added to high temperature water.
And at the temperature, when the solubility of the second mixture is higher, the second mixture can form liquid drops with smaller particle size by the emulsifier and water, and the liquid drops can be more uniformly suspended and distributed in the continuous phase due to the smaller particle size, so that the texture of the defoaming agent is fine and uniform. And the emulsification is carried out under the condition, so that the layering phenomenon of the defoaming agent can be effectively avoided, and the service life is longer.
It should be noted here that ultrasound can be performed during the emulsification process to make the particle size of the droplets in the emulsion smaller, so that the texture of the antifoaming agent is more fine and uniform, and is more suitable for use.
In the invention, the defoaming agent and the thickening agent can be mixed to prepare the finished product I, and the viscosity of the finished product I is 60cm2/s-90cm2And s. It is made to have a viscosity of 60cm2/s-90cm2The thickening agent acts on the system, so that the fluidity of the defoaming component in the system is limited, and the phenomenon of delamination during storage can be further effectively avoided. Meanwhile, the finished product with the viscosity can be applied to various manufacturing processes and is convenient to add.
In the invention, the defoaming agent can be mixed with the carrier after being decompressed and concentrated, and then dried to prepare the defoaming powder. After the defoaming agent is subjected to reduced pressure concentration, the continuous phase part can be removed, the effect of reducing the volume of the defoaming agent is achieved, the defoaming agent is convenient to transport, store, add and the like, and the convenience is higher. And then mixing the enriched defoaming agent with a carrier, and drying to prepare powder, so that the defoaming agent is more convenient and faster and is suitable for various occasions. Meanwhile, the condition that the addition amount of the defoaming agent is inaccurate due to continuous phase loss in the environment of drying and the like can be avoided, and the using effect is better.
In the invention, the drying can be carried out at the temperature of 60-70 ℃, and the drying time is 10-24 h.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.55kg of hydrogen-containing silicone oil, 2kg of dimethyl silicone oil, 6.5kg of vegetable oil, 1.2kg of rare earth oxide, 1.5kg of emulsifier and 10kg of water. Wherein the emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, and the rare earth oxide is lanthanum oxide.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 20min under the condition of a stirring speed of 200rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.35MPa for 20min to obtain a mixture II; and adding the mixture II into water with the temperature of 100-105 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 45kHZ to obtain the defoaming agent.
Example 2
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.55kg of hydrogen-containing silicone oil, 2kg of dimethyl silicone oil, 6.5kg of vegetable oil, 1.2kg of rare earth oxide, 1.5kg of emulsifier and 10kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, and the mass ratio of the lanthanum oxide to the cerium oxide is 1:3.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 20min under the condition of a stirring speed of 200rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.35MPa for 20min to obtain a mixture II; and adding the mixture II into water with the temperature of 100-105 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 45kHZ to obtain the defoaming agent.
Example 3
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.55kg of hydrogen-containing silicone oil, 2kg of dimethyl silicone oil, 6.5kg of vegetable oil, 1.2kg of rare earth oxide, 1.5kg of emulsifier and 10kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, and the mass ratio of the lanthanum oxide to the cerium oxide is 1: 4.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 20min under the condition of a stirring speed of 200rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.35MPa for 20min to obtain a mixture II; and adding the mixture II into water with the temperature of 100-105 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 45kHZ to obtain the defoaming agent.
Example 4
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.15kg of hydrogen-containing silicone oil, 1kg of dimethyl silicone oil, 5kg of vegetable oil, 1kg of rare earth oxide, 1kg of emulsifier and 8kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, and the mass ratio of the lanthanum oxide to the cerium oxide is 1: 3.2.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 10min under the condition of a stirring speed of 150rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.3MPa for 10min to obtain a mixture II; and adding the mixture II into water with the temperature of 90-93 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 40kHZ to obtain the defoaming agent.
Then mixing the defoaming agent with the thickening agent to obtain a finished product I, wherein the viscosity of the finished product I is 60cm2/s。
Example 5
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
1.2kg of hydrogen-containing silicone oil, 3kg of dimethyl silicone oil, 8kg of vegetable oil, 1.5kg of rare earth oxide, 2kg of emulsifier and 12kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, and the mass ratio of the lanthanum oxide to the cerium oxide is 1: 3.6.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 30min under the condition of a stirring speed of 250rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.4MPa for 30min to obtain a mixture II; and adding the mixture II into water at the temperature of 115-120 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 50kHZ to obtain the defoaming agent.
Then mixing the defoaming agent and the thickening agent to prepare a finished product I, wherein the viscosity of the finished product I is 90cm2/s。
Example 6
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.25kg of hydrogen-containing silicone oil, 1.2kg of dimethyl silicone oil, 5.5kg of vegetable oil, 1.1kg of rare earth oxide, 1.1kg of emulsifier, 7kg of carrier and 9kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, the mass ratio of the lanthanum oxide to the cerium oxide is 1:3.4, and the carrier is methyl cellulose.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 15min under the condition of a stirring speed of 230rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.33MPa for 15min to obtain a mixture II; and adding the mixture II into water with the temperature of 95-100 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 43kHZ to obtain the defoaming agent.
Decompressing and concentrating the defoaming agent by 2 times, mixing the defoaming agent with the carrier, and drying the mixture for 15 to 18 hours at the temperature of between 65 and 68 ℃ to prepare the defoaming powder.
Example 7
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.95kg of hydrogen-containing silicone oil, 2.5kg of dimethyl silicone oil, 7.5kg of vegetable oil, 1.3kg of rare earth oxide, 1.8kg of emulsifier, 9kg of carrier and 12kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, the mass ratio of the lanthanum oxide to the cerium oxide is 1:3.5, the carriers are sodium silicate and magnesium silicate, and the mass ratio of the sodium silicate to the magnesium silicate is 2: 1.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 20min under the condition of a stirring speed of 200rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.35MPa for 20min to obtain a mixture II; and adding the mixture II into water at the temperature of 90-120 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 45kHZ to obtain the defoaming agent.
Decompressing and concentrating the defoaming agent by 2 times, mixing the defoaming agent with the carrier, and drying the mixture for 15 to 18 hours at the temperature of between 60 and 63 ℃ to prepare the defoaming powder.
Example 8
The embodiment aims to provide a defoaming agent containing rare earth oxide, which comprises the following raw materials:
0.95kg of hydrogen-containing silicone oil, 2.5kg of dimethyl silicone oil, 7.5kg of vegetable oil, 1.3kg of rare earth oxide, 1.8kg of emulsifier, 9kg of carrier and 12kg of water. The emulsifier is polyoxyethylene ether, the vegetable oil is castor oil, the rare earth oxide is lanthanum oxide and cerium oxide, the mass ratio of the lanthanum oxide to the cerium oxide is 1:3.5, the carriers are sodium silicate and magnesium silicate, and the mass ratio of the sodium silicate to the magnesium silicate is 4: 1.
The preparation method of the defoamer containing rare earth oxide comprises the following steps:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing for 20min under the condition of a stirring speed of 200rpm to obtain a first mixture; mixing the mixture I with rare earth oxide, homogenizing under the pressure condition of 0.35MPa for 20min to obtain a mixture II; and adding the mixture II into water at the temperature of 90-120 ℃ for emulsification for 4-6 h, and carrying out ultrasonic treatment in the emulsification process at the ultrasonic frequency of 45kHZ to obtain the defoaming agent.
Decompressing and concentrating the defoaming agent by 2 times, mixing the defoaming agent with the carrier, and drying the mixture for 15 to 18 hours at the temperature of between 60 and 63 ℃ to prepare the defoaming powder.
Examples of effects
The defoaming agents containing rare earth oxide prepared in examples 1 to 8 were subjected to performance evaluation, and the evaluation results are shown in Table 1.
Defoaming property: adding 50mL of standard foaming liquid into a 100mL measuring cylinder with a plug, then adding an equal amount of defoaming agent into the measuring cylinder, covering a bottle plug, vertically shaking for 15 times at the frequency of 1 time/s, standing, pressing a stopwatch for timing, and recording the time when the foam disappears;
and (3) foam inhibition time: starting and adjusting a foam characteristic tester, setting the temperature to be 50 ℃ and the air flow to be 3L/min. Measuring 100mL of standard foaming liquid, adding an equivalent amount of defoaming agent into the foaming liquid, uniformly stirring, pouring into a clean measuring cylinder of a bubbling instrument, starting a flow pump, and obtaining the foam inhibition time when the foam height reaches the 200mL scale mark of the measuring cylinder;
stability: the defoamer prepared in examples 1-3 was centrifuged at 3000r/min for 15min and the volume of the stratified liquid was recorded;
dispersibility: mixing an equal amount of defoaming agent and 100mL of deionized water, vertically oscillating up and down at the frequency of 2 times/s, and observing the dispersion condition;
acting time: adding 50mL of standard foaming liquid into a 100mL measuring cylinder with a plug, then adding an equal amount of defoaming agent into the measuring cylinder, covering a bottle plug, vertically shaking for 15 times at the frequency of 1 time/s, standing, pressing a stopwatch for timing, recording the time of foam disappearance, then adding an equal amount of foaming liquid into the measuring cylinder after 24 hours, and observing the condition of foam disappearance in the same way;
the criteria for the dispersibility were as follows: 1) the defoaming agent can be dispersed in water quickly, the liquid level has no floating oil, and the dispersibility is excellent; 2) the defoaming agent is not easy to disperse in water, has floccules and is poor in dispersibility; 3) the dispersing speed of the defoaming agent in water is slow, and the defoaming agent has a small amount of floccules with medium dispersibility.
Table 1 results of performance testing
As can be seen from the above table, the products prepared in examples 1 to 8 have better defoaming effect and foam inhibiting effect and better defoaming performance. In addition, the dispersing effect was inferior to that of the emulsion and the defoaming agent in examples 4 and 5 because the defoaming agent was viscous. It is noted here that the products prepared in examples 1 to 3 are in the emulsion state, which has better stability when the centrifuge test is to be performed. And the emulsion defoamer prepared in example 3 is found to have the best stability by comparison, and is obtained in example 2 times and is also obtained in example 1.
In addition, the defoaming products prepared in examples 1 to 8 still have good defoaming effect and long action time after the interval 24 disappears.
In summary, in one aspect, the present invention provides a defoamer containing rare earth oxide, which mainly comprises the following raw materials in parts by weight: 0.15-1.2 parts of hydrogen-containing silicone oil, 1-3 parts of dimethyl silicone oil, 5-8 parts of vegetable oil, 1-1.5 parts of rare earth oxide, 1-2 parts of emulsifier and 8-12 parts of water. The defoamer containing rare earth oxide takes an oil product generated by the reaction of hydrogen-containing silicone oil and vegetable oil as a dispersion phase, takes water as a continuous phase, and uses dimethyl silicone oil to improve the spreading effect, so as to further improve the stability by using rare earth oxide. The hydrogen-containing silicone oil can increase the chain length of the vegetable oil, and has stronger stability, so that the defoaming agent has the characteristics of long service time and long action time, is suitable for a plurality of manufacturing processes, and has stronger applicability.
On the other hand, the invention also provides a preparation method of the defoamer containing rare earth oxide, and the preparation method can ensure that the emulsification effect of the defoamer is better, so that the stability of the defoamer is enhanced.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The defoamer containing rare earth oxide is characterized by comprising the following raw materials in parts by weight: 0.15-1.2 parts of hydrogen-containing silicone oil, 1-3 parts of dimethyl silicone oil, 5-8 parts of vegetable oil, 1-1.5 parts of rare earth oxide, 1-2 parts of emulsifier and 8-12 parts of water.
2. The rare earth oxide-containing antifoaming agent according to claim 1, further comprising 7 to 9 parts by weight of a carrier.
3. The rare earth oxide-containing antifoaming agent according to claim 2, wherein the carrier is formulated from sodium silicate and magnesium silicate, and the mass ratio of the sodium silicate to the magnesium silicate is (2-4): 1.
4. The defoamer of claim 2 or 3, wherein the rare earth oxide comprises lanthanum oxide and cerium oxide.
5. The rare earth oxide-containing antifoaming agent according to claim 4, wherein the mass ratio of lanthanum oxide to cerium oxide is 1 (3-4).
6. A method for producing the rare earth oxide-containing antifoaming agent according to any of claims 2 to 5, comprising the steps of:
mixing dimethyl silicone oil and an emulsifier, adding hydrogen-containing silicone oil and vegetable oil, and mixing to obtain a first mixture; mixing the mixture I with rare earth oxide, and homogenizing to obtain a mixture II; and adding the mixture II into water at the temperature of 90-120 ℃ for emulsification to prepare the defoaming agent.
7. The production method according to claim 6, wherein in the emulsification process, sonication is performed, and the frequency of the sonication is 40 to 50 kHZ.
8. The method according to claim 6, wherein the homogenization pressure is 0.3MPa to 0.4MPa, and the homogenization time is 10min to 30 min.
9. The method according to claim 7 or 8, wherein the defoaming agent is mixed with a thickener to prepare a first finished product, and the viscosity of the first finished product is 60cm2/s-90cm2/s。
10. The method according to claim 7 or 8, wherein the defoaming agent is concentrated under reduced pressure, mixed with the carrier, and dried to obtain a defoaming powder.
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