70results about How to "Uniform bubbles" patented technology

The invention discloses plastic sheet overlaid and mounted porous aeration equipment which is characterized by comprising a connection rod (1), wherein the connection rod (1) is provided with multiple aeration sheets (2); the diameters of the aeration sheets (2) are successively increased, and the aeration sheets (2) are overlaid to form a cone shape; a fixed interface (3) is installed on the lower end of the connection rod (1); and a gas inlet interface (5) is installed on the lower end of the fixed interface (3). The plastic sheet overlaid and mounted porous aeration equipment has the characteristics that the structure is compact and reasonable; the service life is long, and cleaning and exchange are not needed; service area is large, resistance is small, and operation is stable and reliable; adaptability is strong, the equipment is suitable for purification treatment of various sewages; and oxygen utilization rate is high, bubbles are uniform, and no dead angle is generated, thereby solving the problems generated by using the traditional aeration oxygenation equipment and having better aeration effect.

The invention provides a foaming agent suitable for oil-field development. The foaming agent suitable for oil-field development comprises the following components by weight percent: 0.05-1.0% of anionic surfactant, 0.05-1.0% of amphoteric surfactant, 0-1.0% of nonionic surfactant, 0.01-1.0% of foam stabilizer, 0-0.8% of inorganic salt and the balance water. The composition and proportioning of the foaming agent can be adjusted at any time according to the actual situations of different application fields of oil-field development, the foaming agent is convenient in production, has wide applicability and remarkable economic benefit; and the foaming agent has good biodegradability and can not pollute the environment or damage the formation.

The invention provides a preparation method of an inorganic foam building thermal insulation material. The preparation method comprises the following steps: dispersing polypropylene fibers, pulverized fuel ash, sulphate aluminosilicate cement, calcium stearate, perlite, manganese dioxide and triethanolamine to water, and stirring, thus obtaining unfoamed slurry; and adding hydrogen peroxide with 30% of mass concentration to the unfoamed slurry, then molding the obtained pre-foamed slurry by casting, maintaining, demolding, and cutting, thus obtaining the inorganic foam building thermal insulation material. The preparation method has the advantages that the foaming process is controlled by controlling the mixing amount of the manganese dioxide catalyst so as to ensure the strength of the inorganic foam building thermal insulation material, simultaneously reduces the heat conductivity of the inorganic foam building thermal insulation material and enhances the heat preservation effect of the inorganic foam building thermal insulation material, the perlite is added so as to serve as an anti-collapse agent so as to reduce the rejection rate, and meanwhile, the triethanolamine is added so as to improve the property of the inorganic foam thermal insulation material. Compared with materials of the same kind, the inorganic foam building thermal insulation material has the characteristics of high strength, low heat conductivity, small volume weight, burning resistance, flame resistance and the like.

The invention discloses a self-foaming plant fiber-modified polypropylene bead and a preparation method thereof. The self-foaming plant fiber-modified polypropylene and the preparation method thereof are as follows: polypropylene, plant fiber, strong alkali, compatibilizer, Antioxidants, light stabilizers and other additives are combined according to a specific process. Compared with the traditional foamed polypropylene, the product of the present invention does not need to use additional foaming agent, utilizes the decomposition of the plant fiber itself to generate a cell structure, and at the same time improves the mechanical properties of the material.