5results about How to "High expansion factor" patented technology

The invention relates to the technical field of organobentonite, in particular to a preparation method of nanoscale organobentonite, which is characterized in that fine crushing and purification treatment is performed on bentonite raw ore powder, and specific acidizing treatment steps are combined, so that not only can impurities be effectively removed, but also high-purity nanoscale preparation of bentonite can be realized; the activity and the reaction performance of the bentonite are improved, and a foundation is laid for subsequent sodium treatment and lithiation treatment; secondly, sodium bentonite and lithium bentonite are prepared through sodium treatment and lithiation treatment respectively, then the composite bentonite is prepared through mixing, the lithiation bentonite has excellent expansibility, thickening property and suspension property in water, low alcohol and low ketone, the sodium bentonite has good dispersity and cohesiveness, and the composite bentonite is prepared through mixing the sodium bentonite and the lithium bentonite. After the two are mixed and organically modified, the advantages of the two can be integrated, and the physical properties of the bentonite are further improved, for example, the expansion multiple is increased, the viscosity is increased, and the suspension stability is enhanced.

The invention provides a synthesis method of anti-terrorist and anti-riot viscous foam, and belongs to the field of anti-terrorist and anti-riot. The method comprises the following steps: firstly synthesizing several viscous foam materials with different proportions, then measuring and calculating the expansion times, the density and the like, and screening out a proper foam formula as follows: 8.8 to 25.3 percent of polyether polyol, 8.8 to 25.3 percent of polyester polyol 4110, 3.4 percent of water, 5 percent of a surfactant L-580, 0.8 percent of 1, 4-butanediol, 0.4 percent of dibutyltin dilaurate, 1 percent of a stimulant and 55.6 percent of isocyanate. The isocyanate reacts with hydroxyl; and the isocyanate reacts with polyol. Isocyanate and a foaming agent react, specifically, isocyanate and water react, unstable carbamic acid is formed firstly, and then the unstable carbamic acid is decomposed into amine and carbon dioxide. The amino group further reacts with an isocyanate group to generate a polymer containing carbamido. The prepared viscous foam is high in foaming rate, foam curing speed and foam expansion times, meanwhile, a proper amount of stimulant is introduced, and a multi-effect anti-terrorism and anti-riot viscous foam material can be formed.

The invention belongs to the technical field of graphite preparation, and particularly relates to expandable graphite without waste acid discharge as well as a preparation method and application thereof. The preparation method comprises the following steps: stirring and mixing a graphite raw material and recycled sulfuric acid for pretreatment, then adding hydrogen peroxide into the mixture, and carrying out oxidation intercalation reaction at room temperature to obtain a reaction product; carrying out solid-liquid separation on the reaction product to obtain filtrate and a solid product; filtrate is used as recycled sulfuric acid for a pretreatment process; the solid product is sequentially subjected to washing, drying and high-temperature expansion treatment, and the expandable graphite is prepared. According to the method, the core problems of high consumption of sulfuric acid and serious waste acid pollution in the production of the expandable graphite are solved from the source, the raw material and wastewater treatment cost is remarkably reduced through efficient resource recycling, and an economical, feasible and environment-friendly green production process path is provided for the industry.

The utility model relates to a compressed gas foam generating device belongs to coal mine fire prevention technical field. The utility model discloses water inlet unit, jet mixing unit, static mixing unit, foaming unit and foam output unit are sequentially communicated along the medium flow direction. The utility model adopts three -level net -like foaming structure, and the gas -liquid contact and bubble dispersion effect are strengthened gradually, and the foam expansion multiple and stability have been improved significantly, the water pressure is changed through the adjustment water inlet valve, thereby the negative pressure intensity that jet nozzle produces is adjusted, realizes the quantitative inhalation of foaming agent, makes the ratio of water and foaming agent can be accurately controlled under different working conditions, through the liquid suction of jet nozzle negative pressure and the multiple disturbance effect of static helical spoiler, make water and foaming agent fully homogeneous mixture. The foam bubble particle size distribution of the utility model finally output is even, and the structure is compact, has higher expansion degree and covering performance, can be applied to mine fire prevention and disaster emergency disposal efficiently.