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296results about How to "Inhibition strength" patented technology

Mud content inhibitor for concrete doped with polycarboxylic acid type water reducer and preparation method and application method of mud content inhibitor

The invention relates to the field of concrete additives and specifically relates to a mud content inhibitor for concrete doped with a polycarboxylic acid type water reducer and a preparation method and an application method of the mud content inhibitor. The mud content inhibitor is prepared by the following raw materials of, by weight, 20%-30% of mud dispersion components, 0.5%-5% of mud adsorption components, 0.5%-5% of ion complexation exchange components and the balance water. The preparation method includes firstly, uniformly stirring water and the mud dispersion components, and adding and uniformly stirring the mud adsorption components and the ion complexation exchange components. The application method includes that the usage amount of the mud content inhibitor is 2-5 wt. % of that of the polycarboxylic acid type water reducer. By means of the mud content inhibitor, the liquidity and the slump-retaining performance of the concrete can be increased, the viscosity of the concrete is reduced, the work state of the concrete can be improved, the adsorption quantity of high valence metal ions to the polycarboxylic acid type water reducer can be reduced, and the performance of the concrete doped with the polycarboxylic acid type water reducer is guaranteed.
Owner:山东华伟银凯建材科技股份有限公司

Czochralski crystal growth furnace

The invention discloses a Czochralski crystal growth furnace, belongs to Czochralski crystal growth devices, and solves the problems of instability caused by the asymmetric flowing of cooling gas in the existing Czochralski crystal growth furnace and aggregation of inclusion impurities in melt in crystals. The Czochralski crystal growth furnace comprises a furnace body, a base, an inner thermal insulating layer, an electromagnetic induction heater, a furnace cover, a crucible, a crucible cover and a seed rod, wherein a crucible rectifying tube is fixed in the crucible; rectangular holes are uniformly formed in the lower end of the crucible rectifying tube along a circumference; the lower part of the seed rod is connected with a heat insulating ring through ribs which are uniformly and radially distributed in the radial direction; the heat insulating ring is annular; the outer diameter of the heat insulating ring is matched with the inner diameter of the inner thermal insulating layer. The Czochralski crystal growth furnace is simple and reliable in design, can effectively adjust the flow field of the cooling gas and the melt, further improve the temperature field, and improve the stability in the growth process, is beneficial to improving of the growth efficiency of high-quality crystals, reduces the cost, and is applied to the crystal preparation in various different temperature gradient growth conditions.
Owner:HUAZHONG UNIV OF SCI & TECH
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