4results about How to "Does not affect adsorption" patented technology

The application provides an adsorbing material and a preparation method and application thereof. The adsorbing material comprises activated carbon and an additive material; the specific heat capacity and the thermal conductivity of the additive material are not lower than those of the activated carbon; the additive material comprises one-dimensional fiber material and / or two-dimensional layered material; and the mass ratio of the activated carbon to the additive material is 100:(0.1-10). The additive material in the adsorbing material provided by the application can form a thermal conduction path and a uniform heat storage / heat release network, and the activated carbon is surrounded in the network, so that the desorption performance to oil and gas is enhanced, the residual amount is reduced, and the mechanical performance of the material is improved without affecting the adsorption performance of the activated carbon.

The application discloses a preparation method of hydrogenated aldehyde ketone resin without free formaldehyde, belongs to the technical field of aldehyde ketone resin synthesis, and aims to solve the technical problems of high free formaldehyde content, and further improved hydroxyl value stability and transparency in the hydrogenated aldehyde ketone resin in the prior art, and specifically comprises the following steps: under the protection of an inert gas atmosphere, phenylacetone, polyformaldehyde and a solvent are mixed and stirred, the reaction system is heated to 60-75 DEG C, and an inorganic alkali is added into the reaction system. The application is characterized in that the basic aldehyde ketone resin solution prepared by condensation of polyformaldehyde and phenylacetone in a water-free environment with a nickel catalyst is catalytically hydrogenated, not only the hydrogenated aldehyde ketone resin with stable hydroxyl value and extremely low colority is effectively obtained, but also the free formaldehyde content in the hydrogenated aldehyde ketone resin is effectively reduced, and the wide applicability of the hydrogenated aldehyde ketone resin in high-end coatings, adhesives and electronic materials is improved.

This invention belongs to the field of lepidolite tailings technology, and particularly relates to a process for reducing the silicon content in feldspar based on lepidolite tailings. Specifically, it includes the following steps: pretreatment of lepidolite tailings; preparation of soluble starch cross-linked microspheres; preparation of quartz inhibitors; preparation of dicarboxylic acid anionic polyacrylamide; preparation of feldspar inhibitors; addition of quartz inhibitors under neutral conditions to float feldspar; and addition of feldspar inhibitors under alkaline conditions to float quartz. By adding quartz inhibitors to the slurry under neutral conditions, the soluble starch cross-linked microspheres can hinder the adsorption of anionic collectors on the quartz surface, thereby effectively inhibiting quartz and reducing the silicon content in the floated feldspar. By adding feldspar inhibitors to the slurry under alkaline conditions, pectin and dicarboxylic acid anionic polyacrylamide can hinder the effect of anionic collectors on feldspar, thereby effectively inhibiting feldspar and further reducing the silicon content in the feldspar.

The present application relates to the field of concrete admixtures, in particular to a high-adaptability polycarboxylate superplasticizer and a preparation method thereof.The high-adaptability polycarboxylate superplasticizer and the preparation method thereof have the following advantages: by adding a functional monomer and a crosslinking agent in a raw material formula, the functional monomer with a rigid benzene ring and intramolecular hydrogen bonds is introduced into the molecular structure of the polycarboxylate superplasticizer, so that the molecular rigidity is improved; further, the polycarboxylate superplasticizer has a crosslinked molecular structure by the action of the crosslinking agent, so that the molecular rigidity of the polycarboxylate superplasticizer is simultaneously strengthened in the intramolecular structure and the intermolecular structure; when the polycarboxylate superplasticizer is applied to a concrete mixture, the adaptability to cement is significantly improved, and the polycarboxylate superplasticizer has the effects of low dosage, high water-reducing rate, small slump loss, good sulfate resistance and the like.