59results about How to "Prevent powdering" patented technology

The invention belongs to the technical field of insulating materials for building walls, and particularly relates to a treatment fluid formula of a foamed cement insulating material and a posttreatment process of the foamed cement insulating material. The foamed cement insulating material is provided with a treatment fluid protective layer outside the insulating material, wherein the treatment fluid protective layer has a thickness of 0.3-2mm; an organic silicon water-repellent protective layer is arranged outside the treatment fluid protective layer; the organic silicon water-repellent protective layer has a thickness of 0.2-1mm; and the treatment fluid is composed of the following components: 50-100 parts of liquid sodium silicate or potassium silicate, 0-50 parts of lithium silicate and 10-20 parts of silicasol. According to the invention, the foamed cement insulating material can be prevented from powder shedding, the strength can be improved, the water absorptivity can be reduced, and the service life can be prolonged, wherein the strength can be improved by 20-220%, the volume water absorptivity can be reduced to 10% or below, and the service life can be prolonged 3-5 times.

The invention discloses a two-dimensional catalytic material and the preparation and the application thereof.The two-dimensional catalytic material is characterized in that a transition metal foil with the micron-order thickness serves as a base material, a two-dimensional matrix carrier with light weight, flexibility, high specific surface region and roughness is prepared through pretreatment, anodic oxidation, acid etching adjustment and control, hole breaking and thermal stabilization treatment, and the two-dimensional catalytic material is prepared on the basis of the carrier. The two-dimensional ozone catalytic material prepared by taking metal salt and / or organic matter as a precursor and adopting vacuum impregnation, in-situ deposition and thermal reduction technologies to load active metal and / or non-metal active components in situ has the advantages of high specific surface region, high roughness, high mechanical strength, light weight, flexibility and the like; when the catalyst is applied to water treatment, the catalyst has the advantages of quick interface mass transfer, excellent catalytic performance and the like; meanwhile, the preparation process of the two-dimensional catalytic material has the characteristics of simple method, easiness in adjustment of process parameters, easiness in large-scale production, low preparation cost and the like.

The invention relates to a ceramic proppant and a preparation method thereof. The ceramic proppant comprises bauxite and trimanganese tetroxide and is characterized by comprising a water-based organicbinder; and the mass ratio of the bauxite, the trimanganese tetroxide and the water-based organic binder is as follows: 93-99 mass proportion of bauxite; 1-7 mass proportion of trimanganese tetroxide, 8-15 mass proportion of water-based organic binder and total mass of bauxite and trimanganese tetroxide based on 100 mass proportion. The ceramic proppant has the advantages of lower rate of sintering temperature and low broken rate.