41results about How to "Effectively adjust viscosity" patented technology

The invention belongs to the field of synthetic leather, and provides carbon fiber modified non-solvent polyurethane surface layer resin for sports shoe leather. The resin is formed by mixing a component A and a component B according to mass percent being 2:1 to 1:2, wherein the component A comprises 5 to 15 parts of aliphatic diisocyanate, 50 to 60 parts of low polymer dihydric alcohol, 10 to 20 parts of organosilicone polyhydric alcohol, 3 to 10 parts of micromolecule dihydric alcohol, 0.5 to 5 parts of micromolecule trihydric alcohol, 0.1 to 1.5 parts of a catalyst, 0.5 to 2.5 parts of a light/heat stabilizer, 0.02 to 0.5 part of a flatting agent, 0.01 to 0.2 part of a defoamer, 0.1 to 0.5 part of a dehydrator, and 0.5 to 5.0 parts of carbon fiber; the component B comprises 40 to 50 parts of aliphatic diisocyanate, 0 to 10 parts of triisocyanate, 35 to 50 parts of polytetrahydrofuran dihydric alcohol, 0.5 to 5 parts of micromolecule dihydric alcohol, 0 to 2 parts of micromolecule trihydric alcohol, and 0.5 to 1.0 part of a light/heat stabilizer. The invention further provides a preparation method and application of the resin. The tangential breaking strength of carbon fiber modified resin coating can reach 130kN/m or above; for non-solvent sports shoe leather prepared through the method, the peeling strength can reach 90N/3 cm or above and the hydrolysis resistance can reach 10 weeks or above.

The invention provides a solvent-free interlayer polyurethane resin for automotive trim leather and preparation method thereof. The solvent-free interlayer polyurethane resin is composed of an A component and a B component in a mass ratio of (2.5: 1)-(1: 2.5) through the mixing; the A component is composed of diisocyanate, oligomer dihydric alcohol, micromolecular dihydric alcohol, micromolecular trihydric alcohol, catalyst, light/heat stabilizer, flatting agent and solvent-free color paste; the B component is composed of diisocyanate, triisocyanate, oligomer dihydric alcohol, micromolecular dihydric alcohol, micromolecular trihydric alcohol and antioxidant. The polyurethane resin prepared by the method disclosed by the invention can be used as the interlayer for the automotive trim leather, the high temperature durable performance and various mechanical properties of the automotive leather can be effectively guaranteed while meeting the hydrolysis resistance of the automotive leather product; the peeling strength of the prepared automotive leather product reaches up to 145N/3cm, the hydrolysis resistance can reach the condition that the peeling strength still reaches up to 135N/3cm after 10 weeks.

The invention discloses an epoxy polyurethane anticorrosive coating capable of resisting light aging and a preparation method; A component is prepared by mixing, stirring and grinding epoxy resin with medium molecular weight, hydroxyl-containing polyester resin, dimethylbenzene, butyl acetate, titanium pigment, ultraviolet absorber, talcum powder, mica powder, organosiloxane, isopropyl tri (dioctylpyrophosphato) titanate, poly-organic phosphate and the like; B component is prepared by mixing and stirring diphenylmethane diisocyanate and biuret. A component and B component are uniformly mixed according to weight ratio of 4:1 to be used. The epoxy polyurethane anticorrosive coating is capable of resisting light aging and has excellent corrosion resistance against acid, alkali and salt and salt fog resistance. The invention is external anticorrosive preferential coating for steel structures under severe environment such as chemical factories, refineries and the like.

The invention discloses a polyurethane resin used for non-solvent leather with high brightness and bending resistance, a preparation method and application. The polyurethane resin used for non-solventleather with high brightness and bending resistance comprises a resin component A and a resin component B; the resin component A comprises 30% to 45% of ether-ester polyhydric alcohol-aromatic polyisocyanates prepolymer; the resin component B comprises 15% to 60% of aromatic diisocyanate. The resin can be used for preparing polyurethane synthetic leather, the synthetic leather is high in brightness and attractive in appearance, the physical and mechanical properties, such as bending resistance, of the synthetic leather are improved preferably, the production operability of the non-solvent synthetic leather in the mass production process is improved, and the matching stability of the resin component A and the resin component B during machining is guaranteed.

The invention discloses graphene oxide ink as well as a preparation method and application thereof. The graphene oxide ink is prepared from graphene oxide, surfactant and solvent as raw materials, and counted by mass fraction, the graphene oxide accounts for 0.1%-0.5%, the surfactant accounts for 0.05%-0.5% and the rest is solvent. The preparation method comprises steps of dispersing the graphene oxide in the solvent, adding the surfactant to obtain a mixed solution, and carrying out filtering with a micro-filtration membrane to obtain the graphene oxide ink. The graphene oxide ink can be applied to an inkjet printer, and particularly can be used for preparing a graphene flexible circuit through an inkjet printer. The graphene oxide ink and the preparation method thereof disclosed by the invention have the advantages of greenness, environment protection, low cost, simple preparation and the like, and the graphene oxide ink applied to a common home inkjet printer can meet the market requirement.

The invention belongs to the field of agriculture cultivation, and particularly relates to a soilless culture method for potato seedlings. Local agricultural wastes mostly existing in the Inner Mongolia are used, and the seedling soilless culture method is make according to the actual conditions of local potato planting and is suitable for seedling growth, low in cost and simple in step; limits to soil cultivation are removed, the cultivation field of potatoes is enlarged, factory-like and automation development of potatoes are promoted better and faster, and the method has wider market prospects and higher application value.

The present invention discloses a flexible transparent conductive electrode. The flexible transparent conductive electrode is formed by transparent flexible base materials and a silver nanowire coating layer covering the surface of the transparent flexible base materials. The preparation method of the flexible transparent conductive electrode comprises the following steps of: adding silver nanowire aqueous dispersion, waterborne acrylate resin, triethylene tetramine, 1-2 parts of methyl p-tolyl sulfone, 0.1-0.3 parts of hydrogenated castor oil and mixed solvent into a vacuum mixer for vacuum defoamation and uniform mixing to obtain mixed liquor, wherein the concentration of the silver nanowire aqueous dispersion is 2-10 mg/mL, and the mixed solvent is made by mixing alcohols solvent and ketones solvent; drying a wet film in a vacuum drying oven with 150 DEG C for 3-10 min, and taking out the wet film after the wet film is completely volatilized, namely obtaining the flexible transparent conductive electrode. The flexible transparent conductive electrode reduces the conductive resistance rate, further avoids stacking of the silver nanowires, ensures the conductive uniformity and improves the light transmittance.

The invention relates to an invisible optical cable and a self-adhering coating glue. The invisible optical cable sequentially comprises a natural-color optical fiber, a transparent tight sheath layer and a self-adhering coating layer from interior to exterior, wherein the self-adhering coating layer adopts a self-adhering coating glue; the self-adhering coating glue comprises the following components in percentage by weight: 40% to 45% of ethylene-ethyl acrylate copolymer, 11% to 15% of tackifier, 25% to 30% of synthetic wax or petroleum derivative wax, and the balance of other additives. The invisible optical cable has the advantages that by setting the prescription ratio of ethylene-ethyl acrylate copolymer, tackifier, and synthetic wax or petroleum derivative wax, the transparency of the self-adhering coating layer after curing is higher, the open time is longer, the uncuring strength or initial viscosity is higher, the construction is more convenient, and the construction property of the invisible optical fiber is improved.

The invention discloses a nanowhisker leveling thickener for paint and a preparation method thereof. The nanowhisker leveling thickener is prepared from, by weight, 24-36 parts of attapulgite, 13-25 parts of sericite, 16-28 parts of dolomite, 20-30 parts of kyanite, 15-25 parts of phyllite, 8-16 parts of waste ardealite, 5-10 parts of carbide slag, 3-6 parts of sodium sulfate, 2-5 parts of barium fluoride, 1-3 parts of molybdenum trioxide, 6-12 parts of a modifier A and 4-8 parts of a modifier B. The nanowhisker leveling thickener is excellent in thickening and leveling performance, evident in sagging prevention effect and capable of effectively adjusting paint viscosity and preventing sagging of coatings, thick-layer paint can be achieved, and performance indexes of the prepared paint all reach national standard requirements on first-grade products.

The invention discloses a preparation method of low-brittleness 3D (Three-dimensional) printing mortar. The preparation method comprises the following steps: evenly mixing magnesium phosphate cement,portland cement, montmorillonoid, medical stone powder, talcum powder and cocoanut fibers to obtain premix; stirring carrageenan, sodium alginate and water, carrying out microwave processing, adding into liquid paraffin, stirring in an ice-water bath, adding a sodium hydroxide solution to be evenly stirred, cooling, and filtering to obtain a composite microsphere; evenly stirring the composite microsphere, an air entraining agent, a water reducer, polyvinyl alcohol, sepiolite powder and water, and adding the premix to be evenly stirred to obtain the low-brittleness 3D printing mortar. According to the preparation method, which is put forward by the invention, for the low-brittleness 3D printing mortar, the obtained mortar has the advantages of good water tolerance, small heat conduction coefficient, good thermal insulation effect, high strength and lowered brittleness.

The present invention provides a method for preparing an EVA emulsion by adding an alcohol solvent. The method comprises: in a water phase solvent, carrying out an emulsion copolymerization reaction on ethylene and a vinyl acetate (VAc) monomer, and adding an alcohol compound as a second solvent during the copolymerization process. According to the present invention, the method has advantages of polymerization rate controlling, significantly-reduced product viscosity, particle morphology and toughness strength maintaining, and polymerization reaction time shortening; and the obtained EVA emulsion product has advantages of good stability, moderate VAc content and excellent performance, and can meet different needs.

The invention discloses flame-retardant polyether polyol and a preparation method thereof. The preparation method comprises the following steps: weighing 3 parts (mole fraction) of a formaldehyde solution, and adjusting the pH value of the formaldehyde solution by using a 0.1 M NaOH solution until the the formaldehyde solution is slightly alkaline; adding 0.5-1 part (molar fraction) of dicyandiamide, carrying out heating to 75 DEG C, carrying out a hydroxymethyl reaction, adding 1 part of melamine after complete dissolution, and continuing reacting for 1.5 hours after a formed system is completely dissolved into clear liquid; and weighing 20 parts (in a weight ratio with melamine) of polyether polyol, carrying out heating to 80 DEG C, dropwise adding hydroxymethylate into the polyether polyol, and continuing reacting for 2 hours. According to the invention, polyhydroxymethyl melamine is obtained through hydroxymethylation reaction of melamine and formaldehyde, and then undergoes condensation with polyether, thereby obtaining the flame-retardant polyether polyol; and the flame-retardant polyether polyol has the characteristics of no toxicity and efficient flame retardance, and is halogen-free, efficient and flame-retardant, and moreover, system viscosity can be effectively adjusted by adjusting a ratio of dicyandiamide to melamine.

The invention discloses Tibetan medicine ash bark bone setting cataplasm and a preparation method thereof. Proper matrixes and the proportion thereof are screened through an experiment, part of medicinal materials are smashed and used as medicine and diluents, and the obtained cataplasm has few bubbles, is good in adhesiveness and needs no auxiliary paster.

The invention discloses marine diesel oil which is prepared from the following components in percentage by weight: 40-70% of a waste oil distillate, 10-25% of desulfurized heavy aromatics, 15-30% of a grease deodorizer distillate, 5-15% of C3-C5 fusel and 0.5-1.2% of polyacrylate. The marine diesel oil disclosed by the invention fully utilizes part of waste resources and renewable energy sources, can alleviate exploitation and consumption of petroleum resources, and is wide in source of raw materials, low in cost and good in economical benefit. The marine diesel oil is rich in oxygen, good in combustion property, full in combustion, high in heat efficiency, few in tail gas emission pollutant and low in sulfur content, the mechanical corrosivity and discharge of sulfide are reduced, and the marine diesel oil can be widely applied to the application field of ships using petroleum diesel such as fishing vessels, transport ships and collecting ships. The marine diesel oil disclosed by the invention is good in starting performance, small in quantity of black smoke and low in noise, the nozzle is not blocked, carbon is not deposited, the operation is strong and the accelerating performance is good, so that the marine diesel oil is the reproducible marine diesel oil which can utilize waste resources and fully replace existing petroleum diesel.