108results about How to "Enhanced van der Waals force" patented technology

The invention discloses special repair mortar for a structure. The mortar is prepared from the following components in parts by weight: 350-500 parts of common silicate cement, 50-150 parts of sulphate aluminum cement, 100-200 parts of 20-40-mesh quartz sand, 300-350 parts of 41-70-mesh quartz sand, 20-50 parts of montmorillonite, 30-50 parts of a styrene-butadiene rubber latex, 1-10 parts of redispersible latex powder, 1-5 parts of starch ether, 1-5 parts of cellulose ether, 0.5-2 parts of a polycarboxylate superplasticizer, 1-3 parts of a retarder, 1-10 parts of fibers and 1-5 parts of a compound early strength agent. According to the special repair mortar for the structure, by selecting and proportioning the components in proportion, comprehensively excellent utilizing performance of the components, the components draw on strengths of each other and act jointly, so that the shrinking percentage of the mortar is low. Mechanical properties of relatively high bonding strength, tensileand crush resistances and the like are obtained, and the cost performance is high.

The invention discloses a method for preparing chitosan-like efficient flocculant, which comprises the following steps of: (1) pre-treatment of chitosan and derivatives of chitosan: dissolving chitosan and derivatives of chitosan in an acetic acid solution with pH value being 5, uniformly stirring, adding alkali until the pH value is 9 and chitosan separates out, and carrying out suction filtration for later use; (2) preparation of efficient flocculant: adding 1-2 parts of the pre-treated chitosan and derivatives of chitosan, 3-5 parts of cross-linking agents, 1 part of carbamide and 1.5-3 parts of aluminum sulfate in a four-port flask, stirring, pre-reacting for 0.5-1h in a water bath at 60-80 DEG C, then adding 3-8 parts of a dicyandiamide and carbamide mixed modifier, continuing to react for 2-4h, to obtain carbamide-chitosan-dicyandiamide like composite flocculant; and (3) purification of the product: after the reaction, separating out the product by using acetone; carrying out suction filtration; washing the product with ethanol; carrying out suction filtration, and drying in an oven at 90 DEG C for further use.

The invention discloses a polyurethane hard-foam composition and a polyurethane hard-foam plastic prepared from the same. The polyurethane hard-foam composition comprises polyisocyanate, polyether glycol, polyester polyol I, additive flame retardant and foaming agent, wherein the polyester polyol I is flame-retardant polyester polyol. The flame-retardant polyester polyol is added in the polyurethane hard-foam composition, so that the consumption of the additive flame retardant can be reduced; and the plastification action of the additive flame retardant on the polyurethane hard-foam plastic can be reduced, the Van der Waals force among macromolecular chains of polyurethane can be increased, and the relative slippage among the macromolecular chains can be reduced, thereby reducing the sizes of foaming pores formed by the composition. Meanwhile, the Van der Waals force among the macromolecular chains is increased, so that the rigidity of the pore walls of the foaming pores in the polyurethane hard-foam plastic can be increased, thereby ensuring that the foaming pores are more regular in structure and the deformation degree of the foaming pores is weakened. The foaming pores are small in size and stable in structure, and can enhance the compression strength and creep property of the polyurethane hard-foam plastic.

Due to the characteristics of large specific surface area and controllable shape, formed activated carbon is applied in multiple fields such as food, medicines, chemical industry and environment protection. Existing formed activated carbon is mostly prepared from powdered activated carbon formed through a binder, but the powdered activated carbon is expensive, and the binder can cause the reduction of an adsorption effect of the formed activated carbon and the secondary pollution, so that the development of the cheap, green and environmental-friendly binder-free formed activated carbon has animportant practical significance. Waste biomasses are modified under the specific condition, and the binder-free formed activated carbon is prepared from the modified waste biomasses through a chemical or physical activation method. Compared with traditional formed activated carbon, the formed activated carbon prepared through the process adopts the waste biomasses as the raw materials without theneed for using the binder so as to have the advantages of simple preparation process, low cost, renewability, greenness, environment protection and the like.

The invention provides a high-wear-resistance glass explosion-proof film with an anti-fog effect. The high-wear-resistance glass explosion-proof film comprises a PET protective film (4), an anti-fog and wear-resistant resin coating (3), a polyacrylate pre-coating (2), a high-hardness transparent modified PET film (1), a mounting adhesive layer (5) and a PET release film (6). The anti-fog and wear-resistant resin coating comprises, by mass, 20 to 25 parts of a super-hydrophilic oligomer resin composition, 15 to 18 parts of a wear-resistant oligomer resin composition, 3 to 5 parts of trimethylolpropane triacrylate, 2 to 4 parts of tri(2-hydroxyethyl)isocyanurate triacrylate, 4 to 6 parts of a photoinitiator 184, 0.3 to 0.5 part of a wetting leveling agent BYK-358N and 50 parts of ethyl acetate. The high-hardness transparent modified PET film is a composite film prepared from three layers of different mass components through melt co-extrusion and two-way stretching. The product provided by the invention has good antifogging effect and excellent wear resistance, and can be used for explosion-proof films on various glass surfaces.

The invention relates to a dry adhesion pad based on the Van der Waals force effect and a manufacturing method thereof. The method comprises the following steps of depositing a thin film on the surface of a wedge-shaped concave die, wherein the wedge-shaped concave die is provided with a plurality of inclined wedge-shaped grooves; casting an elastic adhesive material into the wedge-shaped concavedie, and carrying out curing at room temperature; and moving the elastic adhesive material out of the wedge-shaped concave die so as to obtain an inclined wedge-shaped array on the surface of the elastic adhesive material, namely the dry adhesion pad based on Van der Waals force effect. According to the dry adhesion pad based on the Van der Waals force effect and the manufacturing method thereof,the adhesion pad with low pre-load, high adhesion and easy desorption characteristics can be prepared by depositing the thin film on the surface of the wedge-shaped concave die with the multiple inclined wedge-shaped grooves, casting the elastic adhesive material into the wedge-shaped concave die, then carrying out curing at room temperature and moving the elastic adhesive material out of the wedge-shaped concave die.

The invention discloses a smoke suppression low-odor modified asphalt coiled material coating material, a preparation method thereof and a modified asphalt coiled material. The coating material comprises matrix asphalt, a softening agent, a free radical scavenger, a metal organic framework compound, an inorganic adsorption material, a reaction type odor inhibitor, a high polymer modifier, tackifying resin, rubber powder and a filler. According to the invention, the free radical scavenger is added, so that a small molecule volatile gas generated by free radical reaction is reduced; the metal organic framework compound can be used for efficiently selectively adsorbing polycyclic aromatic hydrocarbon sulfur-containing thiophene substances and reducing the emission of the polycyclic aromatic hydrocarbon sulfur-containing thiophene substances; the inorganic adsorption material is used for reinforcing the interaction between volatile organic matters and the asphalt matrix, so that the overall emission is reduced; the reaction type odor inhibitor reacts with mercaptan in the asphalt, and the emission of the mercaptan as one of peculiar smell sources and hydrogen sulfide is reduced. The test result shows that smoke-inhibiting and odor-removing active ingredients are added, the flue gas volatilization amount of the modified asphalt coating material is reduced by more than 80% at 180 DEGC, and pollutant emission and peculiar smell source emission are remarkably reduced.

The invention discloses an environment-friendly nickel alloy slag composite curing material for flat sludge. The environment-friendly nickel alloy slag composite curing material is composed of the following component in percentage by weight: 45.0-65.0% of nickel alloy slag, 5-10% of mineral powder, 10-18% of coal ash, 5-15% of cement, 15-27% of lime and 1-5% of salt excitant. The environment-friendly nickel alloy slag composite curing material for the flat sludge is simple in raw material, wide in raw material source, and scientific and rational; the raw materials of the environment-friendly nickel alloy slag composite curing material most are the nickel alloy slag which is difficult to consume and utilize industrially at present and industrial solid wastes such as slag and coal ash, so that the environment-friendly nickel alloy slag composite curing material for the flat sludge accords with the state environmental protection policy, and is capable of saving energy and reducing consumption, and besides, the solidified soil is excellent in mechanical properties and water stability.

The invention discloses a polyvinyl chloride floorboard substrate and a preparation method thereof, belonging to the technical field of polyvinyl chloride boards. The polyvinyl chloride floorboard substrate solves the problems of high cost and poor quality in the existing product. The polyvinyl chloride floorboard substrate is prepared from 80-100 parts of polyvinyl chloride SG8 resin, 100-120 parts of heavy calcium carbonate, 50 parts of floorboard substrate moldboard reclaimed material, 7-8 parts of foaming regulator 903, 2-3 parts of foaming regulator 902, 2.8-4.9 parts of composite stabilizer, 0.6-1.2 parts of internal lubricant ZB-60, 0.35-0.7 part of polyethylene (PE) wax, 0.2-0.5 part of AP, 0.5-0.8 part of plasticizer OA3, 0.3-0.4 part of heat-release AC (azodicarbonamide) foaming agent, 1.4-1.6 parts of heat-absorption Zhongkai c-2 foaming agent, 2-5 parts of ferrite yellow powder and 2-4 parts of CPE (chlorinated polyethylene). The preparation method comprises the following steps: mixing, plastifying and foaming, and extruding to obtain the finished product. The product can be widely used in office buildings, shopping malls, schools, gymnasia, hospitals and other locations.

The invention discloses a UV adhesive tape of a PO panel and a preparation method thereof. The adhesive tape comprises a panel, a UV adhesive layer and a PET release protecting film which are successively laminated from top to bottom. The panel is a PO film which is prepared from the following components in parts by mass: 10-40 parts of polypropylene (C3), 30-70 parts of an ethylene-propylene copolymer (C5), 10-40 parts of (C9) and 0-10 parts of (C19). The UV adhesive layer is prepared from the following components in parts by mass: 50-100 parts of acrylic resin, 0-5 parts of epoxy resin, 1-50parts of carbon-carbon double-bond polybasic unsaturated resin and 0.5-10 parts of a photoinitiator mixed solution. By taking the PO film which is more environment-friendly as the panel of the UV adhesive tape and improving the defect that the adhesive layer is too soft or hard, the adhesive force and the cohesion between the adhesive layer and the PO film are enhanced greatly as a result of a polycondensation reaction of an epoxy resin crosslinking agent and acrylic resin, so that a adhesive residue on the back of a wafer is prevented from being separated from an iron ring. The viscosity reducing effect of the adhesive tape can be also improved greatly, so that the picking rate is 100%.

The invention discloses a high temperature resistant color hydrogenated butadiene-acrylonitrile rubber material and a preparing method thereof, and belongs to the technical field of rubber. The high temperature resistant color hydrogenated butadiene-acrylonitrile rubber material is prepared from, by weight, 80-90 parts of hydrogenated butadiene-acrylonitrile rubber crude rubber, 55-65 parts of reinforcing filler, 2-3.5 parts of silane coupling agent, 5-10 parts of softening plasticizer, 5 parts of zinc oxide, 10-20 parts of Li2CO3-50 GN, 4 parts of anti-aging agent, 1-2 parts of flowing dispersing agent, 9-12 parts of vulcanizing agent, 5-7 parts of crosslinking agent and 0.8-1.2 parts of phthalocyanine green. The high temperature resistant color hydrogenated butadiene-acrylonitrile rubber material has the advantages of being excellent in temperature resistant performance and oil resistant performance, resistant to low temperature, and low in compression deformation at the same time.

The invention discloses a method for preparing a gecko-simulative tail end-charged aligned carbon nanotube dry adhesion array and belongs to the technical field of dry adhesion. Through plasma surfacemodification of an aligned carbon nanotube array obtained by chemical vapor deposition growth and grafting of the tail end of the aligned carbon nanotube array with polar groups such as carboxyl, fluoro, and amino groups, the gecko-simulative tail end-charged aligned carbon nanotube dry adhesion array is obtained. The gecko-simulative tail end-charged aligned carbon nanotube dry adhesion array has high adhesion and can be used in the fields of gecko-simulative robot foot adhesion and solid-to-solid dry adhesion contact.

The invention discloses a preparation method of a novel wood-plastic composite material capable of greatly improving the weather resistance. The preparation method comprises the following steps: uniformly mixing the thermoplastic plastics, wood fibers, high-temperature lubricating agent and high-temperature coupling agent according to a ratio to obtain a mixed material; and carbonizing granulating, carbonizing extruding, conventionally cooling, stretching and cutting to obtain the wood-plastic material, wherein the carbonizing granulating temperature and the carbonizing extruding temperature are 250 to 290 DEG C. The surface and sections of the wood-plastic composite material are black, have metal luster and have metal sound when being knocked; the heat expansion and cold shrinkage deformation is small, and the thermal deformation temperature is greatly increased; the moisture absorption performance is significantly reduced, the corrosion and decomposition are unlikely to occur, and the weather resistance is good; and the ultraviolet resistance is improved.

The invention relates to antirust fluid. The invention also relates to a processing method of the antirust fluid. The antirust fluid made by the method is provided with obvious antirust function and has light even no pollution to the environment. The antirust fluid is generated mainly from the action of alkcnyl succinic acid and monoethanolamine. The mole ratio of alkcnyl succinic acid to monoethanolamine is 0.5-1 to 1. The main components of the antirust fluid are alkcnyl succinic acid dodecenylbutadioic, water and monoethanolamine.

The invention discloses a preparation method for a light bomb-proof aramid fiber composite non-woven fabric chip. The preparation method for the bomb-proof aramid fiber composite non-woven fabric chip includes: spreading aramid fibers, uniformly and straightly arraying in parallel, coating, drying to obtain aramid fiber composite non-woven fabric, and regulating parameters of production equipment to produce the aramid fiber composite non-woven fabrics with different surface density; preparing multilayer composite aramid fiber composite non-woven fabric through increasing the compositing times of the aramid fiber composite non-woven fabric; combining the aramid fiber composite non-woven fabrics with different surface density and different composite layer number to obtain the bomb-proof chip. The light bomb-proof aramid fiber composite non-woven fabric chip has good buffer ability and fire resistance, is resistant to bomb and vibration, is light and convenient to carry, enables the personnel load to be reduced, and enables the fighting efficiency of the fighter to be improved.

A preparation method of a carbon nanotube composite line comprises the following steps: providing at least one carbon nanotube film; providing a substrate, and growing a graphene film on the substrate; compounding the carbon nanotube film with the surface of the graphene film far from the substrate; removing the substrate to form a carbon nanotube-graphene composite film; and rolling up the carbon nanotube-graphene composite film, and twisting to form the carbon nanotube composite wire.

A disperse dye compound, and a preparing method and uses thereof are disclosed. The structure formula of the disperse dye compound is shown as a formula 1. The formula 1 is shown in the specification. A C.I. disperse red 1 dye is selected and subjected to a coupling reaction with a dicarbonyl chloride compound to prepare the disperse dye compound. When the disperse dye compound is used for dyeing of polyurethane fibre or polylactic acid fiber, washing fastness and sublimation fastness are obviously improved.

The invention discloses a disperse dye compound as well as a preparation method and an application thereof. The disperse dye compound has a structural formula shown in the formula I in the specification. C.I. disperse red 13 dye is selected to have a coupling reaction with a benzenedicarbonyl chloride compound, the disperse dye compound is prepared, and washing fastness and sublimation fastness of the disperse dye compound are remarkably improved when the disperse dye compound is applied to spandex or polylactic acid fiber dyeing.

The invention relates to a high-performance explosion-proof blanket which comprises an inner border, an outer border and a cover blanket body. The cover blanket body covers over the inner border and the outer border, the inner border and the outer border are both of a cylinder structure without a bottom face, the height of the outer border is half of the height of the inner border, the top end of the outside of the outer border is provided with a hanging rope, the lower surface of the cover blanket body is correspondingly provided with a hook, the inner border and the outer border are respectively composed of an inner container and an outer cover, each inner container is composed of a lining and high-performance fiber non-woven cloth, the linings are annular, the high-performance fiber non-woven cloth is wound on the surface of the corresponding lining, the center of the cover blanket body is provided with a through explosion venting hole, and the outside of the cover blanket body is provided with the outer cover. The internal structure of the inner border and the internal structure of the outer border of the explosion-proof blanket are respectively formed by winding the high-performance fiber non-woven cloth onto the corresponding lining, the capacity of absorbing impact waves is stronger, and safety of the explosion-proof blanket can be better improved.

The invention discloses a polyolefin surface material UV adhesive tape and a preparation method thereof. The adhesive tape comprises a surface material, a UV adhesive layer and a PET release protective film which are stacked one above another, the surface material is a PO film, and comprises, by mass, 10-40 parts of polypropylene (C3); 30-70 parts of an ethylene-propylene copolymer (C5(70)); and 10-40 parts of an ethylene-propylene copolymer (C5(80)); the UV adhesive layer comprises, by mass, 50 to 100 parts of acrylic resin; 0 to 5 parts of an epoxy resin crosslinking agent; 1 to 50 parts ofcarbon-carbon double bond polyunsaturated resin and 0.5 to 10 parts of a light initiator mixture. The more environmentally friendly PO film is used the surface material of the UV adhesive tape, and atthe same time improves the disadvantage that the rubber layer is too soft or too hard, by condensation polymerization of the epoxy resin crosslinking agent and the acrylic resin, the adhesion and thecohesive force between the adhesive layer and the PO film are greatly enhanced to avoid the case that the adhesive residue on the back side of a wafer is separated from an iron ring to be detached, and the viscosity reduction effect of the tape can be greatly improved, so that the picking rate is 100%.

The invention relates to a hot-melt pressure-sensitive adhesive and a preparation method thereof. The hot-melt pressure-sensitive adhesive comprises, by mass, 5-15 parts of a plasticizer, 20-40 partsof polyisobutylene, 20-50 parts of a thermoplastic elastomer, 40-70 parts of tackifying resin, 0.1-1 part of an antioxidant, 2-5 parts of an additive and 0.5-2 parts of an anti-UV assistant. The additive can increase the Van der Waals force among hot-melt adhesive molecules to effectively prevent pop-open of overlap edges, caused by the sliding of an adhesive layer; and the polarity of the polyisobutylene is similar to that a waterproof coiled material, so the wettability to the waterproof coiled material of the hot-melt pressure-sensitive adhesive is enhanced, thereby the skin-like contact between the hot-melt adhesive and the waterproof coiled material is generated, the intermolecular effect between the hot-melt adhesive and the waterproof coiled material is increased, the infiltration of water molecules is blocked, water escaping from the overlap edges of the coiled material is prevented, and the peeling strength of the overlap edges is increased. The anti-UV assistant can absorb ultraviolet lights in sunshine, and releases the ultraviolet lights in a heat form in order to achieve a good anti-UV aging effect.

The invention discloses an adhesive for outdoor sports shoes, prepared from the following components: SBS, EVA, acrylic monomers, zinc oxide, rutile type titanium dioxide, tetramethyl thiuram disulfide, an emulsifier, silica sol, 2,6-di-tert-butyl-4-methylphenol, an antioxidant and zinc stearate. The invention provides the adhesive special for the outdoor sports shoes, having the advantages of being safe, non-toxic, environmentally friendly, yellowing-resistant, aging-resistant, and high in cohesiveness, having waterproofness and air permeability, being proper in viscosity, good in fluidity, good in bonding stability, and better in water resistance and resistance to acid and base, and improving the quality of the shoes and prolonging the service life of the shoes.

The invention discloses a PS(poly styrene)/PP (propene polymer) fiber material adsorbing underwater benzene serial substances at a high rate. The material has stronger adsorption selectivity to underwater benzene serial substances (toluene, dimethylbenzene and the like), namely, the adsorption rate to the underwater benzene serial substances is remarkably improved, and the adsorption ability to the benzene serial substances on the water surface is also improved while the water adsorption is reduced to a certain extent. The PS/PP fiber adsorption material adsorbing underwater benzene serial substances at a high rate disclosed by the invention is prepared from the following raw materials in part by weight: 100 parts of PP, 1-15 parts of PS and 0.01-1 part of auxiliaries.