50results about How to "Does not affect dispersion" patented technology

The invention discloses a method for manufacturing an anti-insect and anti-mold oriented strand board with full eucalyptus leftover materials. The manufacturing method comprises the following steps of: preparing materials, drying, peeling and removing impurities, sorting and storing, respectively gluing on a surface core layer, hierarchically paving, in advance hot press molding, and sanding wood finishes; an isocyanate sawdust powder hybrid adhesive is coated on the surface, and an anti-insect and anti-mold composite urea-formaldehyde resin adhesive is coated on the core layer; wood shavings on the core layer are divided into three-layer structures, comprising intermediate layer of core layer, upper surface layer of core layer and lower surface layer of core layer; the intermediate layer of the core layer is paved longitudinally, and the upper surface layer of the core layer and the lower surface layer and surface layer of the core layer are paved horizontally. For the oriented strand board prepared by the method, the static bending intensity in a parallel direction is in a scope of 33-39 MPA, the parallel elasticity modulus is in the scope of 4614-4779 MPA, the vertical elasticity modulus is in the scope of 1504-1771 MPA, the thickness swelling rate of water absorption in 24 h is in the scope of 10%-17%, and the vertical nail-holding power reaches up to 89000N. In the manufacturing method, a problem that the board is easy to suffer from erosion of white ants and moths is thoroughly solved by adding an anti-insect and anti-mold additive, and the service life of the board is prolonged.

The invention provides a preparation method and a system of a toner pre-dispersing material. The method comprises preparing all raw materials and heating a kneading machine; adjusting rotation speed of the kneading machine to be 200-300 circle/minute and using the kneading machine to conduct kneading treatment on the raw materials; adjusting a gap between a first roller and a second roller of a three-roll grinder to be 1-2mm and adjusting a gap between a second roller and a third roller of the three-roll grinder to be 0.5-1mm, enabling the first roller and the second roller of the three-roll grinder to adopt hot rollers and enabling the third roller of the three-roll grinder to adopt a cold roller; adjusting rotation speed of the three-roll grinder to be 300-400 circle/minute; and adding materials treated by the kneading machine between the first roller and the second roller of the three-roll grinder, and treating and grinding the materials through the three rollers to obtain the toner pre-dispersing material. The preparation method and the system adopt the kneading machine for fusion and the three-roll grinder for repeated grinding and enable organic pigments to be sufficiently soaked and wrapped by a dispersing agent to remove harmful effects that organic pigment particles are difficult to disperse due to aggregation and the like.

The invention discloses a method for producing a particle board through anti-insect and anti-mold composite urea formaldehyde resin. The method comprises the procedures like material preparation, drying, veneer removing and grit removing, mixing glue, and hot press molding. The key of the production method is that melamine modified urea formaldehyde resin is adopted as a main material of an adhesive; oxidized starch is added as a viscous complexing agent; polyvinyl alcohol is adopted as a flexibilizer; hydrogenated rosin is adopted as an antioxidant; polyisocyanate is adopted as a curing agent; and triethoxyisobutylsilane is adopted as a bridging agent. According to the method, the anti-insect and anti-mold composite urea formaldehyde resin is prepared through adopting phenolated lignin as a formaldehyde capture agent and adding an anti-insect and anti-mold agent, and the particle board produced through the anti-insect and anti-mold composite urea formaldehyde resin has the advantages that the residual amount of formaldehyde is low and the anti-insect and anti-mold effect is good, has a quite high inhibiting effect on breeding of aspergillus, trichoderma and penicillia, and has instantaneous killing force and a long-term prevention effect on board powder-post beetles.

The invention provides rapeseed protein-based nanogel and application thereof, and belongs to the field of nano functional materials. The rapeseed protein-based nanogel is prepared by the following method: performing acylation reaction on rapeseed protein and succinic anhydride to obtain acylated rapeseed protein; adjusting the pH value of the acylated rapeseed protein aqueous solution, heating and quickly cooling the solution. The invention also provides curcumin-loaded rapeseed protein-based nanogel which is prepared by the following method: carrying out acylation reaction on rapeseed protein and succinic anhydride to obtain acylated rapeseed protein; adjusting the pH value of the acylated rapeseed protein aqueous solution, dropwise adding a curcumin solution into the protein solution, and heating and rapidly cooling the mixture; and removing free curcumin to obtain the curcumin-loaded rapeseed protein-based nanogel. The nanogel has good water resolubility and biocompatibility, is uniform in size distribution and high in stability, can efficiently embed hydrophobic active substance curcumin, remarkably improves the anti-tumor activity of curcumin, and improves the bioavailabilityof curcumin.

The invention discloses a preparation method for an activated-carbon-supported ruthenium-based ammonia synthesis catalyst. According to the preparation method, heat treatment is carried out on an activated-carbon-supported ruthenium-based catalyst containing an auxiliary for 0.2-30 hours in mixed gas composed of nitric acid gas and oxygen-free gas at 70-300 DEG C so as to obtain the activated-carbon-supported ruthenium-based ammonia synthesis catalyst, in the mixed gas, the volume ratio of the nitric acid gas is 1-90 vol%, the oxygen-free gas is mixed gas of nitrogen and one or more of zero-group inert gas in any proportion. Compared with the activated-carbon-supported ruthenium catalyst prepared through a traditional method, the catalyst has the advantages of being relatively high in ammonia synthesis activity and thermal stability and good in industrial application prospect.

The invention provides a high-efficiency purification method of a water-dispersed carbon nanomaterial. A ball-milling mixture of a carbon nanomaterial, water-soluble azo dye molecules and derivable modifiable molecules is dissolved with water, and then mixed well with an inorganic salts/aqueous alkali, centrifugation is conducted for 1-30 minutes at the centrifugal speed of 3000-10000 rounds/minute, a supernatant dye solution is sucked out, and then water is added to ultrasonically dissolve bottom precipitation; and the salting-out assisted centrifugation purification process is repeated untila product is washed, and a carbon nanomaterial dispersed in the water is obtained. The high-efficiency purification method has the outstanding characteristics that common alkali and salt are used asan auxiliary settling agent, in a short time and at a low centrifugal speed, high-efficiency separation of free-state dye molecules from the water-dispersed carbon nanomaterial can be realized, in thepurification process of the water-dispersed carbon nanomaterial, the loss of the carbon nanomaterial is small, a purification reagent is environment-friendly, the cost is low, and the purification process has no effect on the physical and chemical properties of the carbon nanomaterial such as the water dispersibility and the photoelectric performance.

The invention discloses a compound water repellent agent containing tertiary amine polymer brush grafted nano silicon dioxide, and belongs to the field of environment-friendly textiles. According to the invention, specific tertiary amine polymer brush graft modified nano-silica is facilitated, and the polymer brush graft modified nano-silica has good water dispersibility, can be doped, mixed and compounded with a cationic water repellent to obtain the water repellent, and does not influence the stability of the emulsion. After fabric is treated by the obtained compound water repellent, the water repellent is adsorbed on the surface of cotton fiber due to electrostatic interaction and is covered by a water repellent film, so that the compound water repellent has excellent capacity of improving the surface roughness of the fiber, the hydrophobic property of the water repellent can be effectively improved, the use amount of the water repellent is reduced to a certain extent, and the problem of environmental pollution in the use process of the water repellent is solved.

The invention provides an early strength viscosity reduction type polycarboxylic acid water reducer. According to the synthesized early strength viscosity reduction type polycarboxylic acid water reducer, cooperative interaction is present between components and between functional groups. Compared with the early strength viscosity reduction type polycarboxylic acid water reducer synthesized in theprior art, early strength and viscosity reduction effects are excellent, water-reducing rate cannot be affected, a lot of hydrophobic alkyl is introduced in a PEG (polyethylene glycol) side chain, aHLB (hydrophile-lipophile balance) value is reduced, surface activity effects are enhanced, and good shrinkage reducing performance is achieved. The water reducer has the advantages that cement hydration is effectively facilitated, and early strength development of concrete is improved. The water reducer has good water-reducing rate and holding capacity of slump degree. Early strength and hydrophobic viscosity reduction functional groups are positioned on the side chain, the contents of viscosity reduction and early strength functional groups are adjusted, so that early strength and viscosityreduction effects of the water reducer can be adjusted, dispersion effects of cement particles cannot be affected by dispersion groups, and dispersion and water reducing effects of the water reducer cannot be affected.

The invention discloses a preparation method of a highly-wear resistant CNF/PMMA composite material. The preparation method is basically characterized by comprising the following steps: pre-coating cellulose nano-filaments as a matrix in PMMA at a higher concentration, preparing composite material master batches and then preparing the master batches and the PMMA into the highly-wear-resistant CNF/PMMA composite material through a melt extrusion method according to a certain proportion. By utilizing the cellulose nano-filaments as a reinforcing phase, the wear resistance of the PMMA composite material can be significantly improved under the premise that the light transmittance is not affected; the obtained highly-wear-resistant CNF/PMMA composite material has potential applications in the fields of electronic screens, aerospace non-structural materials and the like.

The invention provides an early strength and viscosity reduction type polycarboxylate superplasticizer. Components and functional groups of the synthesized early strength and viscosity reduction typepolycarboxylate superplasticizer have a synergistic effect, compared with the early strength type polycarboxylate superplasticizer synthesized in the prior art, the early strength and viscosity reduction type polycarboxylate superplasticizer have excellent early strength and viscosity reduction effects while the water reducing rate is not affected, meanwhile, a large quantity of hydrophobic alkylgroups, phenyl groups and ester groups are introduced into PEG side chains, so that HLB value is reduced, the surface activity effect is enhanced, and the polycarboxylate superplasticizer has good shrinkage reducing performance. The superplasticizer has good effects of promoting cement hydration and improving early strength development of concrete; the superplasticizer has good water reducing rateand slump retaining capacity. Early strength and hydrophobic viscosity reduction functional groups of the superplasticizer are located on the side chains, so that the early strength and viscosity reduction effects of the superplasticizer can be adjusted by adjusting content of the viscosity reduction and early strength functional groups while the cement particle dispersing effect of dispersing groups is not affected, and the dispersing and water reducing effects of the superplasticizer are not affected.

The invention provides a viscosity reduction type active macromonomer, and further provides a viscosity reduction type polycarboxylate water reducing agent. Compared with synthetic viscosity reductiontype polycarboxylate water reducing agents in the prior art, the viscosity reduction type polycarboxylate water reducing agent has the advantages that synergistic effects can be realized between various components and between various functional groups in the synthetic viscosity reduction type polycarboxylate water reducing agent, excellent viscosity reduction effects can be realized by the viscosity reduction type polycarboxylate water reducing agent, but influence on the water reducing ratio is prevented; large quantities of hydrophobic alkyl, ester and phenyl are led into PEG (polyethyleneglycol) side chains, accordingly, the HLB (hydrophile-lipophile balance) value can be effectively lowered, surface activity effects can be enhanced, good shrinkage reducing effects can be realized, and concrete with the added viscosity reduction type polycarboxylate water reducing agent is low in shrinkage and free of cracking; the viscosity reduction hydrophobic functional groups are positioned on the side chains, the viscosity reduction effects of the viscosity reduction type polycarboxylate water reducing agent can be adjusted by the aid of the contents of the viscosity reduction functionalgroups, but the influence on the contents of dispersion groups and influence on cement particle dispersion effects can be prevented, and accordingly influence on dispersion and water reducing effectsof the viscosity reduction type polycarboxylate water reducing agent can be prevented.

The invention provides an early-strength viscosity-reducing polycarboxylate superplasticizer. Compared with the viscosity-reducing polycarboxylate superplasticizer synthesized in the prior art, the early-strength viscosity-reducing polycarboxylate superplasticizer synthesized in the invention has the advantages of excellent viscosity-reducing effect and no influence on the water reducing rate dueto synergistic effects between components and between functional groups; at the same time, due to the introduction of a large number of hydrophobic alkyl groups, phenyl groups and ester groups in a PEG side chain, the HLB value is reduced, the surface activity effect is enhanced, and the polycarboxylate superplasticizer provided by the invention has good shrinkage reducing performance. The polycarboxylate superplasticizer provided by the invention has good effects of promoting cement hydration and improving early strength development of concrete. Early-strength and hydrophobic viscosity-reducing functional groups of the polycarboxylate superplasticizer provided by the invention are located on a side chain, and the early-strength and viscosity-reducing effects of the polycarboxylate superplasticizer can be adjusted by adjusting the content of viscosity-reducing and early-strength functional groups, but a dispersing effect of dispersing groups on cement particles is not affected, so thatthe dispersing and water-reducing effects of the polycarboxylate superplasticizer are not affected.

The invention belongs to the field of solid catalyst for oxidation reactions for preparing dimethoxymethane, and especially relates to a preparation method of a double effect catalyst for high selective oxidation of methane to prepare dimethoxymethane. The preparation method comprises the following steps: (1) weighing oxalic acid and sulfate, adding distilled water containing ethanol, and stirring to dissolve the solid to obtain a solution A; (2) adding ammonium metavanadate into the solution A obtained in the step (1), and stirring to dissolve the solid ammonium metavanadate to obtain a solution B; (3) mixing burned TiO2 with the solution B obtained in the step (2), evenly stirring the solution at a room temperature, and allowing the system to stand still; (4) transferring the product obtained in the step (3) to a reactor, and heating the product; (5) after heating, taking out the product obtained in the step (4) from the reactor, cooling, filtering the white precipitate in the reactor, filtering, drying in vacuum, and burning the powder obtained in the drying step to obtain the target product. The catalyst has the advantages that the V2O5 is well dispersed, and the catalyst has an oxidation activity and acid center.

The invention discloses a method for reinforcing a cement-based material by steel slag-based in-situ growth of hydrated calcium silicate, which comprises the following steps: (1) weighing steel slag powder, a calcium source, a silicon source and a dispersing agent in parts by weight, mixing, and carrying out ball milling to obtain a steel slag dry material; (2) weighing water in parts by weight, adding the dry steel slag into the water, and stirring to obtain steel slag-based in-situ growth hydrated calcium silicate; and (3) adding a cementing material into the steel slag-based in-situ growth hydrated calcium silicate, and stirring to obtain the cement-based material. According to the invention, the steel slag and chemical raw materials are subjected to dry mixing, then calcium silicate hydrate is subjected to in-situ growth through chemical coprecipitation reaction, and finally the cement-based material is prepared by mixing, so that on the premise of not influencing the gelling activity of the steel slag, the in-situ growth of calcium silicate hydrate on a steel slag matrix is realized, the dispersion effect of calcium silicate hydrate is improved, and the agglomeration of calcium silicate hydrate is reduced; the enhanced modification effect on the cement-based material is improved.

The invention provides lithium ion battery negative electrode slurry based on graphene-silicon dioxide composite aerogel and a preparation method of the lithium ion battery negative electrode slurry.The preparation method comprises the steps of firstly, taking graphite oxide and 4-methyl-5-glycolic acid-3-allyl thiazole bromide as raw materials; carrying out hydrothermal reaction to obtain nitrogen, sulfur and bromine co-doped graphene oxide; then mixing, hydrolyzing and curing the nitrogen-sulfur-bromine co-doped graphene oxide and tetraethoxysilane to obtain hydrogel; carrying out post-treatment and reduction to obtain graphene-silicon dioxide composite aerogel; and finally, mixing and grinding the graphene-silicon dioxide composite aerogel, a thickening agent, an adhesive, a dispersingagent, a conductive agent, polyvinylidene chloride, sodium polystyrenesulfonate and water to obtain the lithium ion battery negative electrode slurry based on the graphene-silicon dioxide composite aerogel. The coating performance and the stability are obviously improved, the conditions of caking, sedimentation and the like are avoided, and the battery performance is ensured.

The invention provides a military ammunition can material and a preparation method thereof. The military ammunition can material is formed by mixing a long glass fiber composite material and a short glass fiber composite material. The long glass fiber composite material is prepared by the following raw materials, by weight: 30-40 parts of first homopolymerization PP, 50-60 parts of glass fibers, and 8-12 parts of a first compatilizer. The short glass fiber composite material is prepared by the following raw materials, by weight: 35-45 parts of first homopolymerization PP, 15-22 parts of copolymerization PP, 8-12 parts of HIPS, 8-12 parts of glass fibers, 11-13 parts of a toughening agent, 5-8 parts of a second compatilizer, 0.2-0.3 part of an anti-aging agent, 0.5-2 parts of a pigment, 0.5-1 part of a lubricant, and 0.5-1 part of an antistatic agent. A composite material with excellent comprehensive mechanical properties and corrosion resistance, aging resistance, cold resistance and antistatic properties which can meet requirements of military ammunition cans is obtained by mixing the long glass fiber composite material and the short glass fiber composite material.