47results about How to "Good centrifugal stability" patented technology

The invention discloses synthesis of modified aqueous epoxy resin and a method for preparing antiseptic rusty paint, relating to synthesis of epoxy resin and a method for preparing paint. The invention solves the problems of the traditional aqueous epoxy resin antiseptic paint that storing stability of base material resin and water resistance and corrosion resistance of an aqueous epoxy resin antiseptic paint coating film can not be met simultaneously. the synthesis method of modified aqueous epoxy resin comprises the steps of: mixing Span 60 with Tween 20, adding E-51; heating and stirring, and dropwise adding distilled water till the system viscosity is suddenly reduced; and finally dropwise adding an initiating agent and a monomer to carry out heating reaction. The method for preparingantiseptic rusty paint comprises the steps of: mixing the modified aqueous epoxy resin, a corrosion inhibitor and a rust preventing agent, stirring and grinding; adding a defoaming agent, a curing agent and deionized water; and stirring the mixture to obtain the modified aqueous epoxy resin antiseptic rusty paint. The invention simultaneously meets the storing stability of the base material resin of the aqueous epoxy resin antiseptic paint and the water resistance and the corrosion resistance of the aqueous epoxy resin antiseptic paint coating film.

The present invention discloses an oxidized polyethylene wax micro-emulsion composition and a preparation method thereof. The micro-emulsion composition comprises: 1) 15-35 wt% of an oxidized polyethylene wax with a melting point of 110-150 DEG C, 2) 3-15 wt% of a nonionic surfactant, 3) 0.5-5 wt% of an organic alcohol amine auxiliary emulsifying agent, and 4) 50-80 wt% of water. The micro-emulsion composition can be prepared by using a multi-step high temperature emulsification method, and has characteristics of particle size of less than 100 nm, uniform distribution, centrifugal stability, good acid resistance stability and good alkali resistance stability. In addition, the micro-emulsion composition can be diluted with cold water in any proportions while no particle is precipitated, and the storage stability exceeds more than 6 months.

The invention discloses a full-automatic hydraulic dipping and coating all-in-one machine which comprises a dipping and coating device, a motor (11) and a machine cover (10), wherein the dipping and coating device comprises a material frame (1), a ring-shaped liquid coating groove (3), and an automatic liquid coating groove lifting system (9) connected with the ring-shaped liquid coating groove (3); the center of the ring-shaped liquid coating groove (3) is provided with a main shaft (7), and the bottom end of the main shaft (7) is connected with the motor (11); the top end of the main shaft (7) is fixedly connected with the material frame (1); the inner wall of the ring-shaped liquid coating groove (3) is provided with a ring-shaped water-cooling groove (4); the periphery of the upper edge of the material frame (1) is surrounded by a liquid retention frame (2); a gap is formed between the liquid retention frame (2) and the outer wall of the material frame (1); the external diameter of the liquid retention frame (2) is smaller than the internal diameter of the ring-shaped water-cooling groove (4). The full-automatic hydraulic dipping and coating all-in-one machine has the beneficial effects of being rapid in production step, rapid in coating update and relatively good in centrifugal stability, and being capable of avoiding the waste of a great deal of coating.

The invention discloses a disperse dye paste capable of effectively retarding precipitation. The disperse dye paste is characterized by comprising urea with a weight of 0.05 to 0.5 time of the total weight of a disperse dye component, and a dispersant with a weight of 0.6 to 6 times of the total weight of the disperse dye component, wherein the disperse dye component is one or more selected from compounds as shown in a formula in the specification. In the formula, R1 is H or -NO2; R2 and R3 are selected from the group consisting of H, or -Cl, -Br, -CN, -CF3, -NO2 and -COOR8; R4 and R5 are selected from the group consisting of H, or alkyl, alkoxy and -NHCOR9; R6 and R7 are selected from the group consisting of alkyl, alkoxy, or alkyl or alkoxy with an H substituted by -OH, -CN or -Ph; and R8 and R9 are alkyl. The disperse dye provided by the invention is a liquid dye, and has high dyeing rate, good deep dyeing properties and excellent dyeing fastness; and compared with an ordinary commercial disperse dye paste, the disperse dye paste provided by the invention has the following advantages: the aggregation and precipitation rate of dye particles is significantly reduced, and better storage stability is obtained.

The invention provides a preparation method for a polyprenol microemulsion with bacteriostatic activity. The preparation method comprises the following steps: with polyprenol as a raw material, mixing an emulsifier with a co-emulsifier and then adding polyprenol to form an oil phase; carrying out stirring and adding deionized water, wherein the obtained system temporarily becomes turbid and then becomes clear again; after stabilization of the system, continuing adding a great amount of deionized water with stirring under a heating condition so as to realize phase inversion, wherein the system turns turbid from clear; and finally allowing temperature to rise and carrying out high speed stirring for a certain period of time, wherein the polyprenol microemulsion is obtained when the system becomes clear. The invention has the following advantages: the polyprenol microemulsion with good water dispersibility is prepared from fat-soluble polyprenol grease; and the preparation method is simple, effectively improves water dispersibility, physical properties and bacteriostatic biological activity of polyprenol and broadens the application scope of fat-soluble polyprenol in the industries of food, health products and cosmetics and industries related to biological medicine.

The invention provides a wood waterproof agent adopting a silicone emulsion, a method for preparing the wood waterproof agent, and a method for preparing waterproof wood by utilizing the wood waterproof agent. The method for preparing the wood waterproof agent comprises the following steps: first, preparing a silicone oil emulsion primary liquid which contains hydroxyl silicone oil, hydrogen-containing silicone oil, a surfactant, nano-silicon dioxide, micron-silicon dioxide and water; then, diluting the silicone oil emulsion primary liquid into silicone oil emulsions of different concentrations; and finally, adding a catalyst for uniform dissolution and mixing. When the silicone oil emulsion wood waterproof agent provided by the invention is utilized for vacuum-pressurization pretreatment of wood, the waterproof performance and size stability of the wood can be improved, the hygroscopicity of the wood can be reduced, and the contact angle between the treated wood surface and water is larger than 140-150.