41results about How to "Play the role of cross-linking" patented technology

The invention discloses a self-healing antiskid unvulcanized rubber material comprising the following components in percentage by weight: 20-50wt% of a rubber matrix, 1-50wt% of brominated butyl rubber, 0.1-0.5wt% of an imidazole derivative, 5-25wt% of nano silicon dioxide, 5-20wt% of a plasticizer, 5-10wt% of carbon black, and 1-5wt% of an auxiliary agent. The invention also discloses a preparation method. The self-healing antiskid unvulcanized rubber material disclosed by the invention has excellent weathering resistance, water tightness and air tightness, has good resistance to chemicals, oils, solvents and the like, can be used for manufacturing a sole material, automobile tires, and antiskid wear-resistant materials in various aspects of processing and manufacturing, and can also be used as a sealing ring and a waterproof material.

The invention discloses a lanthanum-oxide-modified rubber cable material which is prepared from the following raw materials in parts by weight: 5-6 parts of tantalum carbide, 0.6-0.8 part of lanthanum oxide, 62-68 parts of hydrogenated nitrile-butadiene rubber, 10-13 parts of carbon nanotube, 7-9 parts of nano kaolin, 55-60 parts of chloroprene rubber, 1-1.5 parts of montanin wax, 2-2.4 parts of calcium stearate, 2-3 parts of epoxy soybean oil, 2-3 parts of vulcanization accelerator TMTD, 55-70 parts of natural rubber, 2-3 parts of decabromodiphenyl oxide, 30-40 parts of hollow glass microsphere, 1-1.3 parts of silane coupling agent kh550, 12-16 parts of epoxy resin E44, 0.06-0.1 part of diethylenetriamine, 0.1-0.2 part of accelerator DA, 2.6-3 parts of silane coupling agent kh570 and a right amount of distilled water. The cable material has favorable flame retardancy, satisfies the requirements for application at high temperature, and has the advantages of favorable aging resistance, favorable oxidation resistance and longer service life.

The invention relates to a vehicle spraying-free composite material. The vehicle spraying-free composite material comprises the following raw materials: polypropylene resin, fillers, metal powder, straight-chain alkyl acid salt, cyclopentadiene and an antioxidant, wherein the metal powder adopts double-layer wrapping; the inner layer is wrapped with thermosetting resin; and the outer layer is wrapped with silicon dioxide nanopowder. Meanwhile, the invention also relates to a method for preparing the method. Aluminum powder is wrapped by double layers; the inner is used for reducing the heat conductivity coefficient of the metal powder, so that occurrence of a welding line is reduced; and the outer layer of silicon dioxide nanopowder can prevent physical or chemical change of the metal powder and the inner layer during high-temperature treatment. Due to addition of the straight-chain alkyl acid salt, the compatibility of the powder and the polypropylene base material is improved and occurrence of current ripple is reduced; and due to addition of the cyclopentadiene, crosslinking effect can be achieved and the integral hardness of the material is increased; meanwhile, due to the high-temperature depolymerization characteristic of the cyclopentadiene, the high-temperature processing property of the polypropylene resin is not influenced.

The invention discloses a high-weather-resistance solar cell back plate, successively comprising a first weather resistance layer, an insulation and blocking layer, and a second weather resistance layer from inside to outside, wherein the first weather resistance layer is bonded with the insulation and blocking layer through an adhesion layer, the insulation and blocking layer is bonded with the second weather resistance layer through an adhesion layer; both the first weather resistance layer and the second weather resistance layer are silicon-fluorene fluorine-containing resin material layers; the insulation and blocking layer is a PET (PolyEthylene Terephthalate) layer; the adhesion layer is a blend layer of EVA (Ethylene-Vinyl Acetate copolymer) and JD919 amino tetra-functional epoxy resin. A manufacturing method of the high-weather-resistance solar cell back plate comprises the steps of plasma corona treatment, overlapping, laminating, and curing. The high-weather-resistance solarcell back plate disclosed by the invention has excellent weather resistance, electric insulation property, oxidation resistance, moisture resistance, hydrolysis resistance for preventing hydrolysis ofan adhesive for a long time, and barrier property.

The invention discloses a ferulic acid-collagen antimicrobial film, and a preparation method and application thereof. The preparation method comprises the following steps: adding collagen in water, dissolving by stirring at the heat treatment temperature of 60-70 DEG C, sequentially adding glycerol, dialdehyde starch, sodium alginate and ferulic acid, carrying out heat treatment at 60-70 DEG C for 20-30 minutes, removing bubbles in a stirring debubbling machine, running on an organic glass plate, drying after the film forming solution is cooled, cooling at normal temperature, and peeling off the film to obtain the ferulic acid-collagen antimicrobial film. The edible food packaging film has the advantages of high transparency, high barrier property, higher mechanical strength and mold resistance; and the oxford cup method detects that the diameters of inhibition zones of the obtained film for Gram-negative bacteria and Gram-positive bacteria are 17-22mm, and the film has strong antibacterial capacity. The prepared film is used for sausage preservation, and can prolong the shelf life of sausage by 8.5 days.

The present invention relates to a method for preparing PC-PS blend alloy, comprising the following steps: after coating PC, PS and SiO2 to prepare high polymer, coating TiO2 and the SiO2 to obtain inorganic particles, and then melting the high polymer and the inorganic particles again to obtain the blend alloy. The method is simple and convenient, easy to operate and realize and short in period. The prepared blend alloy has better ultraviolet resistance, wearing resistance and weather resistance.

The invention discloses a special adhesive used for a high-temperature resistant electronic circuit pad board and added with organic modified montmorillonite, wherein the special adhesive is prepared from the following raw materials by weight: 100-110 parts of corn protein, 8-9 parts of acrylamide, 2-2.5 parts of maleic anhydride, 8-9 parts of ammonium persulfate, a proper amount of sodium hydroxide with the concentration of 40 wt%, a proper amount of distilled water, 50-55 parts of water glass with the modulus of 2.8, 9-10.5 parts of polyvinyl alcohol, 2-3 parts of ethyl silicate, 1.7-2 parts of amino sulfonic acid, 1-1.2 parts of a silane coupling agent kh550, 1-1.4 parts of trisodium phosphate, 5-6 parts of montmorillonite, 0.3-0.4 part of cetyltrimethyl bromide ammonium, a proper amount of anhydrous ethanol, 3-4 parts of magnesium oxide, 2-3 parts of sodium alginate, and a proper amount of dilute hydrochloric acid. According to the present invention, the prepared adhesive has advantages of high strength, improved curing speed, good thermal stability, good high-temperature resistance and good insulating property, and is suitable for the adhesion of the electronic circuit pas board.

A modified nitrile butadiene rubber cable material is disclosed. The cable material is prepared from 11-14 parts by weight of magnesium borate crystal whiskers, 10-13 parts by weight of emery powder, 6-8 parts by weight of clay, 2-3 parts by weight of sodium carboxymethylcellulose, 2-2.5 parts by weight of lauric acid, 0.7-1 part by weight of polyoxyethylene ester, 58-65 parts by weight of nitrile butadiene rubber, 3-4 parts by weight of polyethylene wax, 55-60 parts by weight of chloroprene rubber, 0.8-1 part by weight of an antioxidant 1010, 1-2 parts by weight of lauric acid, 55-70 parts by weight of natural rubber, 30-40 parts by weight of hollow glass micro beads, 1-1.3 parts by weight of a silane coupling agent kh550, 12-16 parts by weight of epoxy resin E44, 0.06-0.1 part by weight of diethylenetriamine, 0.1-0.2 part by weight of an accelerant DA, 2.6-3 parts by weight of a silane coupling agent kh570 and a proper amount of distilled water. The cable material is good in thermal stability, excellent in performance and low in raw materials cost, saves resources, can be produced in a large scale and deserves popularization.

The invention discloses magnetic paper prepared by recycling leftover material fibers of paper diapers, which comprises a magnetic raw paper layer, and magnetic coatings are arranged on the front surface and the back surface of the magnetic raw paper layer. The magnetic paper solves the problem of low retention rate of Fe3O4 in the existing magnetic paper. The preparation method of the magnetic paper comprises the following steps: 1, crushing paper diaper leftover material fibers, dissolving the crushed paper diaper leftover material fibers in water, sequentially adding polyaluminum chloride,bentonite, zeolite powder and nano ferroferric oxide, fully stirring to obtain a slurry, and defibering the slurry; 2, papermaking the fiber pulp into paper; 3, adding sodium alginate, konjac gum, humic acid, nano Fe3O4 and a silane coupling agent into water, and continuously stirring the mixture for later use of sizing; and 4, sizing the front and back sides of the paper made in the step 2 by using a sizing machine with the sizing agent in the step 3, soaking the sized paper in a calcium chloride solution, taking out the paper, and feeding the paper into a glazing dryer for drying and calendaring treatment. The method is simple and easy to operate.

The invention relates to surface modified calcium carbonate and a preparation method thereof. The surface modified calcium carbonate is prepared by adding tung oil series of derivative modifiers or acetone solution of the modifier into heavy calcium carbonate dry power or light calcium carbonate water suspension for coating for 10-30 minutes at 30-100 DEG C, with the modifier or acetone solution of the modifier being 0.5-2.5 weight percent of the calcium carbonate. The tung oil series of derivative biological surface modifiers used in the invention is renewable resource; the production processis easy to popularize and implement with low cost and no pollution. The modifier contains a carboxyl which can be chemically combined with calcium ions on the surface of calcium carbonate, so that the surface of the calcium carbonate is changed from hydrophilicity to hydrophobicity to enhance the action between the calcium carbonate and interface of polymers; unsaturated bonds of the modifier plays a role of crosslinking during polymer processing; and the modified calcium carbonate can be used for filling plastic, rubber, adhesive and the like, improves the toughness of composite material, reduces the production cost and has wide application prospect on the basis of ensuring the mechanical strength.

The invention discloses recycled paper diaper leftover material fiber recycled antibacterial paper. The paper comprises an antibacterial raw paper layer, and antibacterial coatings are arranged on thefront face and the back face of the antibacterial raw paper layer. The invention also discloses a preparation method of the antibacterial paper. The method comprises the following steps: 1, pulverizing paper diaper leftover material fibers, dissolving the pulverized fibers into water, sequentially adding polyaluminum chloride, bentonite, zeolite powder and nano titanium dioxide, performing sufficient stirring, and performing defibering to obtain fiber pulp; 2, performing papermaking on the fiber pulp obtained after treatment in the step 1; 3, simultaneously dissolving sodium alginate and konjac glucomannan into water to obtain a mixed solution, so as to obtain a modified sodium alginate sizing agent; 4, sizing the front and back surfaces of the antibacterial raw paper with the sizing agent obtained in the step 3; and 5, soaking the sized paper obtained in the step 4 into a zinc chloride solution for 30 minutes, then performing soaking in water for 10 seconds to obtain antibacterial coatings, taking out the coated paper, and feeding the coated paper into a calendering dryer for drying and calendaring treatment. The method provided by the invention is simple and easy to operate.