10results about How to "Good defoaming" patented technology

The invention discloses a modified organic silicon defoaming agent as well as a preparation method and application thereof, and belongs to the field of papermaking defoaming agents. The preparation method comprises the following steps: firstly, carrying out addition reaction on hydrogen-containing silicone oil, alkyne and enol to obtain an alkyne modified organic silicon defoaming agent intermediate; performing high-temperature phase inversion emulsification on the alkyne modified organic silicon defoaming agent, docosanol, octadecanol and an emulsifier to obtain the alkyne modified organic silicon defoaming agent. The modified organic silicon defoaming agent obtained by the preparation method disclosed by the invention is applied to a papermaking section, not only can quickly eliminate foams on the surface of a system, but also can remove small bubbles attached to the surfaces of fine fibers in pulp, so that the gas content of a paper machine system is reduced, the operation efficiency of a paper machine is improved, and the modified organic silicon defoaming agent has the characteristics of no toxicity, no harm, simple process and the like.

The utility model relates to a tray, concretely is a kind of anti-static porous ventilative wear-resisting non-chip tray, the tray includes tray main body, anti-chip hardware insert and indicates loading product state color block, tray main body includes the disc body in cuboid, is formed with accommodating groove in the upper end surface of disc body, is provided with multiple different size ventilative round hole in accommodating groove, multiple assembly clamping holes are arranged in the edge position of disc body in accommodating groove, inverted hook clamping block is arranged in the periphery of disc body, wherein anti-chip hardware insert is arranged in the edge position of tray main body, and anti-chip hardware insert includes support strip.The anti-static porous ventilative wear-resisting non-chip tray, TN / STN / FSTN / TFT liquid crystal display module on its tray, TP touch screen module, OLED display module, Minoled module maximumly reduce the adhesion of Partical, greatly reduce the pollution received by dust-free clean room, improve the yield and efficiency of non-foreign matter assembly.

The invention provides a preparation method of a modified bio-based polyether defoaming agent, and belongs to the technical field of chemical additives. The invention relates to a preparation method of a modified bio-based polyether type defoaming agent. The defoaming agent is prepared by uniformly mixing the following components in parts by mass: 55-75 parts of modified castor oil polyether A and 18-32 parts of modified glucose polyether B, and 4-16 parts by mass of modified fatty alcohol polyether C. The defoaming agent obtained by the method has good defoaming and foam inhibition effects in a water-based system and an oil-based system, has good mixing intersolubility with silicon paste, is stable in storage and does not stratify.

The utility model relates to a vertical static hot -blast goods cabinet for defoaming of sealant, it includes the cabinet body, goods shelf, hot -blast module, goods shelf is constituted by circulating frame and a plurality of support frame. Hot -blast module can carry out blowing hot air to the cabinet body, to improve internal temperature, in high temperature environment, the mobility of sealant will obviously improve, the viscosity reduces, is favorable to increase the rate of bubble floating, improves the effect of defoaming, simultaneously circulating frame can drive support frame to and fro circulation, the slight vibration in the process also can promote defoaming process, improve the defoaming rate.

A lubricating oil composition is provided, comprising a hydrocarbon-based synthetic oil (X1), an ester-based synthetic oil (X2), and a phosphorus-containing copolymer (Y), wherein the phosphorus-containing copolymer (Y) comprises a constituent unit (a) derived from a specific alkyl methacrylate (A), a constituent unit (b) derived from a specific hydroxyl-containing methacrylate (B), and a constituent unit (c) derived from a specific phosphorus-containing methacrylate (C), which can maintain excellent defoaming properties over a long period of time.

This invention provides a method for preparing an esterified defoamer, belonging to the field of organic synthesis technology. The method includes the following steps: C1618 alcohol, oleyl alcohol, maleic anhydride, and a bimetallic cyanide complex are added to a reaction vessel, purged with nitrogen, and heated to 135-150°C. A mixture of propylene oxide and ethylene oxide is first introduced to induce a reaction; after successful induction, the mixture is continuously introduced. After the introduction of the propylene oxide and ethylene oxide mixture is completed, the reaction continues at 140-150°C. After the reaction is complete, nitrogen is pressurized to a pressure of 0.3-0.5 MPa inside the vessel, and the reaction is carried out at 80-130°C for 5-7 hours. Vacuum is then applied, and the temperature is lowered to obtain the esterified defoamer. This method eliminates the need for secondary addition of esterification monomers and esterification catalysts, resulting in a simple and safe reaction process, significantly reduced production costs, and a high esterification rate. The obtained esterified defoamer exhibits good defoaming and foam-suppressing properties.

The utility model relates to seed tank technical field, concretely is a seed tank for biological fermentation, including cylinder, the outside of cylinder is provided with the jacket, the jacket is filled with phase change material, be provided with hot water pipe and steam heat exchange coil in the cylinder, still be provided with stirring oar and defoaming component in the cylinder, the defoaming component is located the top of stirring oar, the inner wall of cylinder is provided with the ring groove of top opening, the end of defoaming component leans on ring groove. The utility model discloses through setting hot water pipe and steam heat exchange coil, realizes double quick heating, and under the action of stirring oar, makes the biological seed even temperature rise in the cylinder, through the effect of phase change material in the jacket, makes the temperature in the cylinder constant in a certain range, further realizes its heat preservation effect, through the setting of defoaming component, makes the defoaming effect better.

The present application provides a silicone-based defoaming agent oil compound and a manufacturing method thereof, which is used for a defoaming agent with excellent defoaming speed and without performance reduction even in repeated use or long-term use, and comprises (A) 20-80 mass% of an essentially hydrophobic organopolysiloxane with a viscosity of 2,500-50,000 mPa·s at 25°C; (B) 20-80 mass% of a hydrophobic organopolysiloxane with silanol groups at least at both terminals or a cyclic organopolysiloxane; (C) 1-10 mass% of a silane or a condensate of silane; and (D) 2-10 mass% of a fine powder silica with a specific surface area of 50 m2 / g or more, wherein the total of (A) and (B) is 100 mass%.

This utility model discloses a defoaming device for preparing hyaluronic acid hydrogel, comprising a defoaming tank, a defoaming filter plate, and a vent valve. The defoaming tank has a hollow internal cavity structure. The vent valve is located on the top surface of the defoaming tank and communicates with the internal cavity through a mounting hole. An inlet and an outlet are provided on the top and bottom surfaces of the defoaming tank, respectively connected to an inlet pipe and an outlet pipe. A defoaming filter plate is installed inside the defoaming tank, with its edge connected to the inner wall of the defoaming tank. The defoaming filter plate has an array of distributed through holes. This utility model provides a defoaming device that achieves good defoaming effect through multi-stage physical defoaming, eliminating the need for chemical defoamers and keeping equipment costs controllable. Specifically, the defoaming tank with a defoaming filter plate and a flow-delay plate, combined with the flow rate of the mixed liquid, achieves a good defoaming effect. The defoaming filter plate and flow-delay plate are equipped with spikes to further puncture air bubbles in the mixed liquid, enhancing the defoaming effect.

The utility model relates to the technical field of biological fermentation, and particularly discloses a defoaming device for biological fermentation, which comprises a sealing cover main body, a connecting frame is arranged below the sealing cover main body, and a plurality of groups of inclined teeth are fixedly connected to the bottoms of the two sides of the connecting frame; metal net plates are fixedly connected to the positions, located on the tops of the inclined teeth, of the two sides of the connecting frame. Through the arrangement of the sealing cover body, the connecting frame, the inclined teeth, the metal net plate, the partition plate and the conical teeth, in the rotating process of the connecting frame, part of foam is eliminated through the inclined teeth obliquely arranged at the bottoms of the two sides, and the foam is guided upwards through the inclined teeth in the rotating process; part of foam is eliminated again through the metal net plates on the two sides of the connecting frame, the foam which is not eliminated is guided into the connecting frame due to inertia, some small bubbles are eliminated through the conical teeth, and then the final defoaming work is completed, so that the effect of conveniently and rapidly eliminating the bubbles in the fermentation tank is achieved.