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809results about How to "Good defoaming effect" patented technology

Dynamic demonomerization and defoaming method and device for carbon fiber spinning solution

ActiveCN101856570AContinuous quantitative feedingSingle and degassing continuous dynamicFoam dispersion/preventionCarbon fibersSolvent
The invention discloses a dynamic demonomerization and defoaming method and a dynamic demonomerization and defoaming device for carbon fiber spinning solution. An ultrasonic generator is arranged in the centre of a defoaming kettle; an air guide cylinder and a flow guide disk are arranged on a flow diversion and air guide cover; and the defoaming effect is improved to realize low-temperature high-vacuum demonomerization and defoaming of the spinning solution with different relative molecular masses and different charging rates by the processes of heating a demonomerization and defoaming device, continuous feeding, gravity demonomerization and defoaming, film stretch defoaming and ultrasound-assisted defoaming and controlling the defoaming temperature, the vacuum degree and the rotation speed of a demonomerization tower. The spinning solution obtained by the method has the residual monomer content of less than 0.1 percent, less than 5 small bubbles with diameter of less than 0.03mm and solvent loss of less than 5 percent during the demonomerization and defoaming. The method and the device can realize continuous dynamic demonomerization and defoaming at a low temperature under vacuum condition and has the characteristics of simple and practical process and good defoaming effect.
Owner:XIAN KANGBEN MATERIAL

Water-based cutting fluid for metal processing and preparation method of water-based cutting fluid

The invention discloses water-based cutting fluid for metal processing and a preparation method of the water-based cutting fluid. The cutting fluid mainly consists of a lubricating agent, a metal antirust agent, an anti-wear reagent at extreme pressure, a nonionic surfactant, a dispersing agent, an antifoaming agent and water, and the cutting fluid comprises the following components in percentage by weight: 8-12 percent of oleic acid, 1.8-2.5 percent of triethanolamine, 0.3-0.6 percent of boric acid, 0.2-0.5 percent of benzotriazole, 5-8 percent of sodium carbonate, 10-12 percent of polyethylene glycol, 0.2-0.5 percent of dodecylphenol polyoxyethylene ether (OP-10), 0.7-1 percent of glycine betaine, 0.5-0.8 percent of glycerin polyoxypropylene ether and the balance of water. According to the water-based cutting fluid disclosed by the invention, the problems that the conventional water-based cutting fluid is poor in antirust and lubricating performances, low in recycling period and harmful to the human and environment are solved, and the aims of improving the lubricating effect and the antirust performance, realizing harmlessness to the environment and a human body and reducing the production cost of metal processing are achieved by virtue of synthesis of polybasic esters.
Owner:中钢集团郑州金属制品研究院股份有限公司

Seawater desalination de-foaming agent as well as preparation method and application thereof

The invention relates to a seawater desalination de-foaming agent as well as a preparation method and application thereof. The de-foaming agent is prepared from silicon paste, polyether modified organic silicon, an emulsifier, a thickening agent and water, wherein the mass percent of the silicon paste is 5 to 20 percent, the mass percent of the polyether modified organic silicon is 10 to 30 percent, the mass percent of the emulsifier is 2 to 10 percent and the mass percent of the thickening agent is 0.5 to 2 percent. The preparation method comprises the following steps: (1) weighing the silicon paste, the polyether modified organic silicon and the emulsifier according to the mass percent and mixing at 70 to 80 DEG C to obtain a mixture; (2) preparing the thickening agent into a water solution; (3) injecting 1 / 3 or less of the thickening agent water solution into the mixture of step (1); after uniformly mixing, adding the residual thickening agent water solution in batches to obtain thede-foaming agent. The de-foaming agent provided by the invention has the characteristics of high stability, rapid de-foaming speed, good foam inhibition performance, good compatibility with a scale inhibitor and the like and has good environment-friendly performance and a wide application prospect.
Owner:自然资源部天津海水淡化与综合利用研究所 +1
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