33results about How to "Long bubble time" patented technology

The invention provides a sasanqua saponin concrete air entraining agent and a preparation method thereof. The air entraining agent is characterized by containing sasanqua saponin therein. The preparation method is characterized by extracting sasanqua as a raw material at normal temperature by hydrophilic solvent water solution, and filtering; removing large-molecule impurities from the filtrate by membrane separation under pressure, removing small-molecule impurities by membrane separation, concentrating to be concentrate with Baume degree of not lower than 10Be (60 DEG C), and spray-drying to form solid formulation; or adding a modifying agent to prepare the air entraining agent in liquid formulation. The idea is novel, the raw materials are abundant, the production efficiency is high, the energy consumption in the production is low, the production cost is low, the preparation method is simple in process, green and environment-friendly and is convenient to implement; when the air entraining agent is used in concrete engineering, the dosage of the air entraining agent is low, the air production rate is high, the aperture of the entrained air bubbles is small and the distance among the entrained air bubbles is small, and the air holes of the concrete are more even, more compact and non-communicated, therefore, the sasanqua saponin concrete air entraining agent is valuable for popularizing.

The invention relates to a camellia saponin type oilfield foaming agent and a preparation method and application thereof. The oilfield foaming agent comprises the following components in part by mass: 100 parts of camellia saponin based on the solid content, 1 to 10 parts of cocoanut oil diethanol amide, 1 to 10 parts of amine ether alkyl glucoside, 1 to 10 parts of dodecyl betaine, and 0.5 to 2 parts of lauryl dimethy amine oxide, wherein the camellia saponin is natural plant source camellia saponin or structure-modified camellia saponin. The camellia saponin type oilfield foaming agent is used as an oilfield foaming agent in oil recovery, has the characteristics of acid, alkali and salt resistance, temperature resistance, high foam expansion ratio, long stable foam time and the like, can meet oil extraction requirements under different geological and weather conditions, cannot pollute an oilfield soil layer employing the foaming agent, can prevent a chemically synthesized foaming agent from harming the oilfield stratum, and has remarkable environmental protection characteristic.

The invention discloses structural modification type cameclia oleifera saponin, which is prepared by the following method: stirring cameclia oleifera saponin and normal butanol at room temperature and carrying out an esterification reaction under the action of 4-dmethylamino pyridine as a catalyst and N-dicyclohexylcarbodiimide as a dehydrating agent; tracking and detecting to complete reaction; adding fatty alcohol and stirring at room temperature and reacting for 2-5 hours; heating to 70-100DEG C; controlling the reaction pressure to be 0.005-0.015MPa; stirring and carrying out an ester exchange reaction, tracking and detecting to complete reaction; filtering reaction liquid; washing filtrate B; drying and then filtering an organic layer to obtain filtrate C; carrying out reduced pressure distillation to recover the normal butanol; and obtaining a remainder which is the structural modification type cameclia oleifera saponin. The structural modification type cameclia oleifera saponinhas the characteristics of high foaming multiplying power, long foam stabilizing time and the like and can be used as a matrix raw material of an oil filed foaming agent; and the oil filed foaming agent synthesized by matching and optimizing has the performances of resisting acid, alkali, temperature and salt and capability of meeting the oil extracting requirements under different conditions.

The invention discloses an environment-friendly compound concrete foaming agent and a preparation method thereof. The environment-friendly compound concrete foaming agent comprises the following components: sodium alpha-olefin sulfonate, alkyl glycoside, methyl ester sulfonate, cocamidopropyl betaine, tea saponin, arabic gum, hydroxypropyl methyl cellulose, gelatin, polyanionic cellulose, polyvinyl alcohol and sodium bentonite. The environment-friendly compound concrete foaming agent disclosed by the invention is alkalescent, achieves the pH value of 7-9, has the advantages of high foaming power, large foam expansion, fine uniform and tough foam, durability, stability, long foam stabilizing time, small bleeding amount, small deposition amount, good hard water resistance and suitability for water with various rigidities.

The invention belongs to the technical field of coal mine safety, and patricianly relates to multifunctional liquid foam used for an underground coal mine and a using method of the multifunctional liquid foam. The multifunctional liquid foam used for the underground coal mine comprises, by mass, 0.5-10% of crystal whisker stopping agents, 0.5-30% of quaternary ammonium salt cationic surface active agents, 0.5-30% of non-ionic surface active agents and 0-10% of additives, the balance of water. The multifunctional liquid foam preparation method and using method are simple, bring convenience for use and manual operation, and are strong in applicability because of being suitable for mines rich in acid gases like sulfuretted hydrogen and sulfur dioxide, tunnels with large coal spontaneous combustion tendency, mine working faces and the like and particularly suitable for mine goaves.

The invention discloses a preparation method and an application of a lauramide concrete foaming agent. The method is characterized in that: lauric acid and hydroxyethylethylene diamine with a molar ratio of 1.0:1.0-1.5 are added into a reaction vessel, a solvent toluene is added, and the mixture is subject to a reaction for 2 to 5 hours under a temperature of 140 to 160 DEG C; the mixture is cooled, and a crude product of a yellow solid is obtained; the crude product is washed by using anhydrous acetone, and is dried, such that a white powdery solid is obtained, wherein the solid is an intermediate; the intermediate, chloroacetic acid and sodium hydroxide are formulated according to a molar ratio of 1:1.0-1.3:2.0-2.6; chloroacetic acid and sodium hydroxide are dissolved in water, such that a sodium monochloroacetate solution with a mass percent concentration of 10 to 20% is prepared; the intermediate is heated to 80 to 90 DEG C until melted, the sodium monochloroacetate solution is dropped into the intermediate, and the mixture is then subject to a reaction for 3 to 5 hours with maintained temperature; the mixture is cooled and filtered, insoluble substances are discarded, and the filtrate is the lauramide concrete foaming agent with excellent foaming performance.

The invention relates to a preparation method for a high-temperature lightweight tough mullite aggregate. According to the technical scheme, the preparation method comprises the following steps: mixing 40-65 parts of mullite powder, 5-25 parts of 94.5% silica powder, 20-55 parts of soft clay and 0.3-0.5 part of water reducer in parts by weight with water while stirring at a stirring rate of 500 rad/min, thereby fully mixing main materials and forming into a uniform slurry; adding 10-40 parts of foaming agent and 0.1-0.6 part of foam stabilizer into the uniform slurry. According to the invention, a manner of one-step foaming is combined with a unique stirring process, for fully and uniformly distributing the foaming agent into the slurry and lastly forming a foam slurry; the production process is simple and practicable; volume density of aggregate body is 0.5kg/m3-0.6kg/m3; volume density of sintered aggregate is 0.3kg/m3-0.4kg/m3.

The invention discloses a method for preparing expanded asphalt, and belongs to the technical field of materials for paving pavements. The method comprises the following steps: performing a heat insulation reaction on a functional assistant, a sodium silicate solution, water and crushed asphalt at a lower temperature, rising the temperature, performing heat insulation foaming, lowering the temperature to room temperature, adding isocyanate, and continuously performing stirring and reacting to obtain the expanded asphalt, wherein the functional assistant is obtained by mixing a self-made emulsified dispersion, polyethyleneimine and a crosslinking agent, and carbon dioxide is continuously introduced into the system in the mixing process; and the emulsified dispersion is formed by octenyl succinic acid modified starch, enzymatically hydrolyzed chitosan, water and linoleic acid. The expanded asphalt prepared in the invention has the characteristics of excellent mechanical properties, prolonged foam stabilizing time and effectively improved bonding strength.

The invention discloses a method for preparing a novel composite concrete air entraining agent. The novel composite concrete air entraining agent is prepared from 5%-15% of dodecyl dimethylamine, 5%-15% of sodium ethoxylated alkyl sulfate, 5%-10% of sodium abietate, 5%-15% of coconut oil diethanolamide and the balance water. According to the method, the materials with different components for airentraining, bubble stabilizing, plastification and the like are compounded to be used for perfecting the application performance of concrete, the novel composite concrete air entraining agent is liquid, can be dissolved in water, and can be diluted into the liquid with the concentration of 1.5%-2.0% in a stirring station to be automatically metered and added. The novel composite concrete air entraining agent can be used when a finished additive is compounded, the compounding performance of the product and other concrete additives is good, the amount of admixture is small, the compounding effect is superior to that of a deltonin air entraining agent, the surface tension of a solution can be effectively reduced, and sealed and independent bubbles are generated. The advantages of being high in foaming rate, small in bubble diameter and bubble stabilizing time are achieved, and the work performance of the concrete and the concrete flowing slump loss resistant performance can be obviously improved.

The invention relates to the field of concrete, and particularly discloses anti-freezing green vegetation concrete and a preparation method thereof.The anti-freezing green vegetation concrete is prepared from, by weight, 200-300 parts of cement, 60-80 parts of kieselguhr, 300-380 parts of aggregate, 60-100 parts of soil, 10-20 parts of composite fibers, 1-2.5 parts of air entraining agent, 4-10 parts of water reducing agent and 120-160 parts of water; the air entraining agent is prepared from the following components in parts by weight: 20 to 35 parts of rosin powder, 8 to 14 parts of nekal, 12 to 16 parts of melamine, 5 to 15 parts of sulfuric acid, 10 to 20 parts of sodium hydroxide and 12 to 18 parts of polyethylene glycol. The anti-freezing green vegetation concrete disclosed by the invention has relatively good anti-freezing performance.

The invention discloses a preparation method for a compound type foaming agent, relates to a preparation method for an additive for a building, in particular to a preparation method for a foaming agent added into concrete. The compound type foaming agent is compounded from an initial product, N,N'-dinitrosopentamethylamine (DPT), diglycol and lauryl alcohol. The compound type foaming agent is prepared on the basis of the original foaming agent, substances with excellent foaming properties are added into the foaming agent, and other additives are added to achieve the effects of increasing foams, stabilizing foams and regulating. The compound type foaming agent prepared by the preparation method is verified in practical production, and has the outstanding characteristics of being great in foaming amount, small in foam loss, small in strength effect and the like. The preparation method is simple to operate, is easy to control and is relatively high in yield.