69results about How to "Cross-linked tightly" patented technology

A curable coating composition is provided which comprises an acrylic resin having an epoxy group and a hydroxyl group in the side chain (A) and a compound having an amino group (B). The composition may further comprise a silane compound having an epoxy group or an amino group in the molecule (C).

The invention provides a method for treating aquaculture sewage based on microbial degradation, and belongs to the technical field of environmental protection. According to the method, a filtering filler loaded with algae bacteria is provided for preliminary adsorption and filtration of sewage, and algae bacteria fixed pellets are provided for symbiotic purification of the sewage. The algae bacteria are placed in a nitrogen-free phosphorus-free culture environment for enlargement culture, and nitrogen and phosphorus domestication is performed before loading or fixing, when the domestication operation is terminated, a weight percentage of ammonia nitrogen in the culture environment is at least 25%, and a weight percentage of phosphorus is at least 20%. The method has remarkable decontamination and deodorization treatment effects, can adapt to large changes in the nitrogen and phosphorus content of sewage, and treatment temperature, has high microbial nitrogen and phosphorus tolerance and removal rate, and has low treatment input cost and energy consumption. The used filtering filler has large loading capacity, high adsorption capacity and adsorption efficiency, and low biological loss during a storage period. The used algal bacteria fixed pellets have high mass transfer efficiency, good anti-microbial decomposition performance, long storage period and effective use period, and high sewage treatment efficiency of the microorganism at a relatively low temperature.

The invention relates to a preparation method of a stratified-structure mineral reinforced rubber composite material. The preparation method comprises the following steps: (1) carrying out nano-organic modification on a stratified-structure mineral; (2) preparing an organic modified nano-stratified-structure mineral inserted rubber master batch; (3) preparing the raw materials of an organic modified nano-stratified-structure mineral reinforced rubber composite material; and (4) preparing the organic modified nano-stratified-structure mineral reinforced rubber composite material, wherein the stratified-structure mineral is one or mixture of two of black talc, montmorillonite, kaolin and illite in the same mass ratio. According to the preparation method, the functional rubber composite material with excellent mechanical property, stable weather resistance and good warping strength and humidity resistance is prepared.

The invention belongs to the technical field of rubber, and particularly relates to a preparation method of fatigue-resistant rubber, which comprises the following steps: (1) preparation of materials;(2) primary plastication; (3) secondary plastication; (4) rubber mixing; and (5) vulcanization: putting the rubber compound into a mold for vulcanization treatment, and pressurizing and preheating the mold for 5-10 minutes after the set temperature before each vulcanization treatment is reached, the vulcanization treatment conditions being 155 +/- 10 DEG C * 10-12 minutes, and the vulcanization pressure being 10-12 MPa, thereby finally obtaining the fatigue-resistant rubber. The rubber compound with low Mooney index and high processability can be obtained by adjusting the material selection and vulcanization system of the filling system and adopting a specific mixing method, the fatigue resistance of the automobile suspension rubber can be effectively improved, the suspension residual deformation is reduced, and the bonding strength of the rubber and an iron piece (insert) is improved. The rubber satisfies 800,000-900,000 times of test under the conditions that the load is 1000-8500Nat 3 Hz.

The invention discloses a self-repairing antibacterial polyurethane coating and a preparation method thereof, and relates to the field of polyurethane coatings. When the self-repairing antibacterial polyurethane coating is prepared, amino silicon oil, polyester polyol and isocyanate are used for jointly preparing a polyurethane coating material, then modified graphene is added, the self-repairing antibacterial polyurethane coating material is prepared, and finally coating is conducted. The amino silicon oil is prepared by adding 2, 3-epoxypropyl trimethyl ammonium chloride to react when the amino silicon oil is prepared; and the modified graphene is prepared by grafting 2-(N, N-dimethylamino) ethylamino dithiocarboxylic acid onto graphene oxide and then performing reduction. The self-repairing antibacterial polyurethane coating prepared by the preparation method disclosed by the invention not only has self-repairing antibacterial capability, but also has relatively good water resistance and hydrophobicity.

The invention discloses a preparation method of a high absorption lutein ester zeaxanthin soft sweet. The method comprises dissolving carrageenan and pectin in hot water to prepare a glue solution; mixing the glue solution with a syrup solution and heating to the solid content of 65-70% to obtain a mixture A; dissolving lutein ester, zeaxanthin and chitooligosaccharide in an ethanol aqueous solution and conducting spray drying or fluidized bed drying to obtain composite powder; mixing the mixture A and the composite powder, adjusting the pH to 3.5-4.5, heating the mixture to the soluble solidcontent of 70-75%, pouring the mixture in a soft sweet mold to form the lutein ester zeaxanthin soft sweet. The lutein ester zeaxanthin soft sweet obtained by the method can increase the absorption rate of the lutein ester and the zeaxanthin, and the stability of the lutein ester and the zeaxanthin in the soft sweet is good.

The invention belongs to the field of food processing, and discloses a lactobacillus plantarum DMDL 9010 microcapsule as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving chitosan in a lactic acid solution, adjusting the pH value to 3-5, adding lactobacillus plantarum DMDL 9010 activated bacterial sludge, fully stirring, then adding a genipin solution, uniformly mixing, then adding plant oil containing span 80, uniformly mixing, stirring to prepare a water-in-oil emulsion, carrying out a cross-linking reaction to obtain a microcapsule suspension, washing with ethyl acetate, and drying to obtain the chitosan microcapsule. And drying to obtain the lactobacillus plantarum DMDL 9010 microcapsule freeze-dried powder. The obtained lactobacillus plantarum DMDL 9010 microcapsule has the advantages of high embedding rate, small particle size, high gastrointestinal tract tolerance, simple preparation method and the like, and has relatively high application value.

The invention discloses a UV-postcured modified aqueous polycarbonate polyurethane emulsion and a preparation method thereof. Raw materials for preparing the emulsion comprise, by weight, 8.0-9.5% ofPCDL, 1.5-2.0% of DMPA, 2.0-3.0% of CHDM, 1.0-2.0% of TEA, 9.5-11.5% of TDI, 0.2-1.0% of TMP, 1.8-10% of a diluent, and 60-80% of water. The crosslinking degree of the UV-postcured modified aqueous polycarbonate polyurethane emulsion is further improved while the emulsion is dried and forms a film, so the polyurethane structure is closely combined.

The invention discloses a biomass coated oil-proof paper prepared by gluing a nanocellulose-reinforced alginate/starch-based composite oil-proof film and a paper substrate, and a production technologythereof. The production technology comprises the following steps: preparing nanocellulose by chemical pretreatment, acid hydrolysis, TEMPO catalytic oxidation, ultrasonic treatment, mechanical crushing or a combination thereof; producing the composite oil-proof film by using starch and sodium alginate as an oil-proof film forming substrate, glycerin as a plasticizer and nanocellulose as a reinforcing component; and casting the composite oil-proof film material to form the film, and bonding the film and the paper substrate to produce the biomass coated oil-proof paper. The nanocellulose, alginate and starch have good compatibility when compounded, and the addition of the nanocellulose makes the alginate and starch closely cross-linked, so the strength, the oil resistance and the thermal stability of the alginate/starch-based composite oil-proof film are effectively improved. The biomass coated oil-proof paper produced by casting film formation and bonding has a smooth surface, can be firmly combined, has no crease phenomenon, has no delamination, and can be naturally degraded.

The invention relates to the technical field of synthetic leather, and provides a preparation method of organosilicone synthetic leather. The method comprises the steps that 1, surface glue is prepared; 2, bottom glue is prepared; 3, release paper is evenly covered by the surface glue through a roller painter according to thickness of 0.1-0.5 mm to obtain a surface glue layer, drying is conducted,on a second roller painter, according to thickness of 0.1-0.2 mm, the surface glue layer is evenly covered by a bottom glue material, then the surface glue layer and a base cloth are subjected to lamination, drying is conducted, and through a winder, the release paper of a semi-finished product is separated, so that the organosilicone synthetic leather is obtained. By means of the preparation method of the organosilicone synthetic leather, the problems that existing organosilicone synthetic leather is prone to generate static electricity and has poor bonding fastness are solved.

The invention discloses a galvanized steel strand for a corrosion-resistant maritime work optical cable and a preparation process of the galvanized steel strand. The steel strand is mainly made of a plurality of hot-dip galvanized steel wires; each hot-dip galvanized steel wire comprises a steel wire body, an aluminum layer, a bonding layer and a zinc layer; secondary drawing is carried out after aluminum plating, mixed powder is sprayed to a preheated secondary drawing steel wire body, and the mixed powder is melted on the surface of the steel wire body, wherein 2-aminobenzothiazole and N, N, N', N'-tetraglycidyl-4, 4'-diaminodiphenylmethane react, hydroxyl reacts with epoxy group to generate crosslinking, and amino in a crosslinking product and hydroxyl on the surface of the aluminum layer are subjected to condensation and addition reaction to form a structure similar to a metal organic framework, so that the mechanical property and wear resistance of the steel wires can be improved; and the prepared steel strand has good corrosion resistance, the three-layer structure is adopted, cross-linking among the structures is tighter, the corrosion resistance is better, and good practicability is achieved.

The invention relates to the technical field of engineering construction, solves the problem that in the prior art, a precipitation well is not prone to being blocked, and particularly discloses a precipitation well blocking method. Multiple pieces of water absorption resin are put into the precipitation well to form a water absorption layer, and water in the precipitation well is converted into colloid through a coagulant; the characteristics of the colloid are utilized to settle sand grains and broken stones in the water, so that the quicksand phenomenon is reduced; when the colloid is adsorbed on the inner wall of the precipitation well, some sand grains, broken stones and water absorption resin can be adsorbed on the inner wall, so that the quicksand phenomenon is further inhibited, and water seepage can be reduced; and a mixture and a pre-blocking material are added into the precipitation well in sequence and are tamped in sequence, so that the water absorption resin expands to the periphery, soil on the side edge of the precipitation well is extruded and tamped, the density of the precipitation well is improved, the water permeability is reduced, the mixture is prevented from losing efficacy, and a relatively dry environment can be provided for final blocking.

The invention discloses a cable with good toughness and excellent thermal stability. The cable comprises a conductor and a protective sheath layer, wherein the protective sheath layer coats the conductor; the protective sheath layer is prepared from the following raw materials in parts by weight: 15 to 25 parts of ethylene propylene diene monomer, 60 to 90 parts of chloroprene rubber, 20 to 30 parts of nitrile rubber, 15 to 25 parts of light-weight calcium carbonate, 14 to 22 parts of glass fiber, 20 to 40 parts of nerchinskite, 25 to 35 parts of modified clay, 1 to 2 parts of epoxidized soybean oil, 2 to 4 parts of coal tar, 0.4 to 0.8 part of polyethylene wax, 0.4 to 1 part of stearic acid, 0.4 to 1 part of bis(2,4-dichlorobenzoyl peroxide), 1.5 to 2.5 parts of succinic acid peroxide, 0.3 to 0.7 part of 2-ethyl-4-methylimidazole, 0.8 to 1.4 parts of bispheno1-A diglycidyl ether and 2 to 4 parts of anti-aging agent. The cable has the advantages that the hydrophobic and tear-resistant properties are good, the toughness is excellent, and the heat stability is stronger.

The invention discloses a polysiloxane-based polyurethane/lignin elastomer as well as a preparation method and application thereof, and belongs to the technical field of preparation of polyurethane/polysiloxane elastomers. Thepreparation method comprises the following steps: (1) mixing an isocyanate, a catalyst, a polycarbonate diol and an organic solvent to obtain a prepolymer mixed solution; then adding polysiloxane and ligninfor continuous mixing reaction, carrying out cooling treatmentafter the reaction is finished to obtain a polysiloxane-based polyurethane/lignin solution; and (2) carrying out molding treatment on the polysiloxane-based polyurethane/lignin solution to obtain the polysiloxane-based polyurethane/lignin elastomer. According to the invention, the characteristics that lignin is abundant in resource, easily available and renewableare utilized, and a cross-linked structure or filler effect is formed under the action of covalent bonds, so that the polyurethane elastomerhas the characteristics of hydrophobicity, high mechanical strength and cytotoxicity resistance.

The invention provides tea and flower wine and a preparation method thereof. The ingredients of the tea and flower wine are lily flower, tree peony bark, honeysuckle, mint and distilled water, and thetea and flower wine is prepared from, by weight, 5 parts of lily flower, 10 parts of tree peony bark, 5 parts of honeysuckle, 10 parts of mint and 100 parts of distilled water. The preparation methodcomprises the following steps of (1) preparation of filtrate A; (2) preparation of diluent; (3) post-treatment of tea leaves; (4) treatment of filtrate B; (5) preparation of glutinous rice mash; 6) preparation of tea liquid; (7) staged fermentation; (8) subsequent treatment. The preparation method of the tea and flower wine has the advantages that the preparation process for the unique componentsis optimized and improved, the prepared tea and flower wine has both mellow bouquet of brewed wine and nutritional value and medicinal value of tea, traditional Chinese medicinal material and glutinous rice, the taste is soft, the wine is full-bodied, mellow and delicate.

The invention discloses a purifying agent for indoor complex pollutant sources and an application of the purifying agent, and belongs to the technical field of indoor air purification. The purifying agent for the indoor complex pollutant sources comprises a film forming agent, a catalyst and a dispersant, wherein the film forming agent is prepared from the following components in parts by weight:2-10 parts of high hydrogen silicone oil, 0.6-3 parts of amino acid, 0.1-1.2 parts of enzyme protein, 1-10 parts of a silicon-containing polymer and 1-6 parts of a surfactant; the catalyst is preparedfrom the following components in parts by mass: coenzyme, organic acid and stearamide. The purifying agent has the characteristics of long persistence, strong membrane structure, adjustable membranefunction, controllable decomposition function and the like, can neutralize and decompose indoor air pollutants when being applied to indoor air purification and can effectively prevent release of gaseous pollutants.

The invention discloses a flame-retardant low-smoke halogen-free silane-free crosslinked polyethylene cable material and a preparation method thereof. The flame-retardant low-smoke halogen-free silane-free crosslinked polyethylene cable material is prepared from the following raw materials in parts by weight: 9.3 to 9.4 parts of polyolefin resin, 0.1 to 0.2 part of a flame retardant, 0.1 to 0.2 part of a polymerization inhibitor, 0.15 to 0.2 part of a compatilizer, 0.1 to 0.2 part of a catalyst, 0.15 to 0.25 part of a radiation-free crosslinking sensitizer, 0.1 to 0.2 part of an antioxidant, 0.1 to 0.2 part of an initiator, 0.1 to 0.2 part of a coupling agent and 0.1 to 0.2 part of an auxiliary agent. According to the flame-retardant low-smoke halogen-free silane-free crosslinked polyethylene cable material disclosed by the invention, a composite material with excellent mechanical property, flame-retardant property and processability is obtained through optimal design of a formula of the flame-retardant low-smoke halogen-free silane-free crosslinked polyethylene cable material, and the technical requirements of a halogen-free flame-retardant polyolefin insulating material are met.