40results about How to "Improve hydrophobicity and lipophilicity" patented technology

The invention discloses a preparation method of nanoscale organobentonite, which comprises the following six steps: (1) bentonite raw ore processing, (2) sodium modification, (3) centrifugation purification, (4) inorganic acid modification, (5) organic coating reaction, and (6) a post treatment stage. The preparation method has the characteristics that through substep purification, a mass ratio of a sodium agent to suspending liquid is kept at 0.3%; in an inorganic acid modification process, improvements are performed by adjustment of a PH value to subacid and a charging mode in the organic coating reaction stage; the bentonite is subjected to delaminating dispersion, centrifugation purification and superfine grading to prepare pure montmorillonite with the content greater than 95%; then, double octadecyl dimethyl ammonium chloride is used for performing the organic coating reaction; finally crushing to a nanoscale particle size is performed, that is, the average lamellar thickness is less than 25 nanometers; and the preparation method ensures the product quality, shortens the production cycle greatly, lowers the production cost, and is suitable for large-scale popularization and application.

The invention discloses a preparation method and application of a super-hydrophobic glass fiber composite oil-water separation material, and the material preparation method comprises the following steps: dissolving basic cupric carbonate in an alkali solution to obtain a mixed solution I; impregnating a glass fiber felt in the mixed solution I to obtain a CuO glass fiber felt; dissolving polydimethylsiloxane in an organic solvent to obtain a mixed solution II; and soaking the CuO glass fiber felt in the mixed solution II, and carrying out high-temperature curing treatment to obtain the super-hydrophobic glass fiber composite oil-water separation material. The super-hydrophobic glass fiber composite oil-water separation material is prepared by loading a copper oxide crystal and a polydimethylsiloxane (PDMS) solution onto the surface of a glass fiber composite material by using a hydrothermal deposition method and an excessive impregnation method respectively. Due to ultrahigh hydrophobic and oleophylic properties and a superposable combination mode, the material has a good demulsification effect on various emulsified oil, and can be widely applied to oil-water separation operation.

The invention discloses a hydrophobic modification method of sodium alginate sponge as well as a product and application thereof. The method comprises the steps: soaking the sodium alginate sponge into calcium ion solution, and then soaking in zirconium ion solution to obtain modified sodium alginate sponge. Relative to a method for hydrophobic modification of materials such as graphene, polysiloxane, organo-siloxane and a metal organic skeleton (these modification agents are high in price, toxic, and complicated in synthesis process, and are not beneficial to large-scale production and application) on the sodium alginate sponge, the porous sodium alginate sponge prepared according to the invention is simple in method, green and environmental-friendly and easy to produce in large scale. Next, sodium alginate is rich in natural resource, can replace petroleum-based sponge, and solves the problem that the current petroleum resource is scanty. Subsequently, hydrophobic three-dimensional porous sodium alginate sponge has a good adsorption effect on various oils or organic solvents, and is easy to desorb and can be repeatedly used.

The invention discloses a bentonite drilling fluid and a preparation method thereof, and relates to the technical field of drilling and exploitation. The technical point is: a bentonite drilling fluid, comprising the following components in parts by weight: water: 100 parts; bentonite: 8-10 parts; amine compounds: 2-6 parts; cellulose additives: 0.2-1 part ; Lubricant: 1-4 parts; Synergist: 1-2 parts, the invention has the advantages of reducing filtration loss, strong wall-protecting ability and good blocking performance.

The invention discloses a preparation method and application of nano-calcium carbonate modified by in-situ polymerization of MMA. Firstly, a two-phase mixed solution method is used to uniformly polymerize nano-calcium carbonate slurry in MMA monomer solution, and secondly, the modified nano-calcium carbonate slurry is modified by MMA. After curing the slurry CaCO 3 @PMMA was filled into a PVDF matrix, followed by water vapor-induced phase separation (WVIPs) to prepare CaCO 3 @PMMA / PVDF composite material, made of bulk CaCO after hot pressing 3 @PMMA / PVDF composite. In-situ polymerization modification can effectively improve the hydrophobic and lipophilic properties of nano-calcium carbonate, and after hot pressing, the modified calcium carbonate can be dissolved in the matrix PVDF while maintaining the original distribution state, and closely combined with the matrix to improve the CaCO 3 Durability of @PMMA / PVDF composites. The present invention utilizes MMA in-situ polymerization modification and two-phase solution mixing method to prepare CaCO 3 @PMMA, followed by steam-induced phase separation to make modified powdered CaCO 3 The @PMMA composite is uniformly distributed in the PVDF matrix, and finally the bulk CaCO is produced by hot pressing 3 @PMMA / PVDF composite.

The invention discloses a graphene plant fiber nanocomposite oil-absorbing agent and a preparation method thereof, comprising graphene, plant fiber particles, lipophilic nanoparticles, adsorbents, coupling agents, film-forming agents and solvents, wherein the mass In terms of parts, 2.5 to 4 parts of the graphene, 30 to 48 parts of the plant fiber particles, 5 to 8 parts of the lipophilic nanoparticles, 15 to 24 parts of the adsorbent, and 8 to 48 parts of the coupling agent 13 parts, 7.5-12 parts of the film-forming agent, and 41-82 parts of the solvent. The graphene plant fiber nanocomposite oil-absorbing agent of the present invention uses natural plant oil-absorbing materials as the main raw material, and has carried out hydrophobic and lipophilic modification on it, so that it has excellent oil-water separation performance while being safe and environmentally friendly.

The invention discloses a superhydrophobic and lipophilic material, which is composed of a matrix, a reinforcing body, a coupling agent and a nano-coating attached to the surface of the matrix. The matrix material is stainless steel mesh, nickel foam, copper foam or titanium foam One, the linking agent is dopamine, the nano-coating on the surface is one or both of hexadecylamine and octadecylamine; the reinforcing body is graphene. Its preparation method is also disclosed; the design concept of the present invention is to coat a layer of reduced graphene oxide on the wire mesh skeleton such as nickel foam, and the graphene as the reinforcement plays a role in improving the strength of the matrix material. The coating uses graphene oxide with a smaller particle size. After reduction, the graphene sheet is thinner, which can exert the excellent performance of graphene. In addition, graphene itself is hydrophobic, and nano-scale low surface energy substances are modified on its surface to realize the combination of the two properties and improve the hydrophobicity and lipophilicity and the durability of use.

The invention belongs to a method for preparing flexible block charcoal by carbonizing small wood blocks. The method is to remove the lignin in the wood block by chemical reagent treatment, then replace with higher alcohol and freeze-dry to obtain the wood-based skeleton, and finally the obtained wood The base skeleton is carbonized at high temperature under the protection of an inert gas to obtain a flexible bulk carbon with a wavy layered skeleton structure. The invention can obtain high hydrophobicity and lipophilicity, good compressibility and elastic flexible block carbon, and has the advantages of simple preparation process, easy process control, wide source of raw materials, safety and non-toxicity, lower preparation cost and less environmental pollution.

The invention discloses an environment-friendly rubber hose, which comprises a modified polypropylene resin pipe body and a TPE elastomer back plug; the invention also discloses a preparation method of the environment-friendly rubber hose. In the present invention, the rice straw fiber is cross-linked and polymerized with polypropylene, which endows the composite material with easy-to-degrade and renewable environmental performance. The modified silane coupling agent is used to modify the rice straw fiber to reduce the number of OH on the fiber surface, making it hydrophobic and hydrophilic. Increased oiliness, improved compatibility of fibers with polymer matrix, and thermal decomposition of aluminum sol into nano-Al 2 o 3 , nano-Al 2 o 3 It exhibits a certain degree of lipophilicity, and cooperates with polysiloxane to improve the affinity between plant fibers and polypropylene. In addition, during the preparation of TPE elastomer back plugs, the ratio of SEBS elastomer to polypropylene is strictly controlled to 0.03 :1, the back plug made under this ratio has excellent light transmittance.