46results about How to "Improve resistance to burning" patented technology

The invention relates to a monolithic Pd catalyst for catalytic purification of industrial organic waste gas and a preparation method thereof. The catalyst comprises a cerium-zirconium solid solution, La2O3, Nb2O5, Al2O3, noble metal Pd and a cordierite-honeycomb ceramic supporter. The preparation method comprises the following step: coating the cerium-zirconium solid solution, La2O3, Nb2O5, a pseudo-boehmite binding agent and the noble metal Pd on the surface of the cordierite-honeycomb ceramic supporter in twice, wherein the total mass of the cerium-zirconium solid solution, La2O3, Nb2O5 and Al2O3 coated for each liter of catalyst is 40g; and the loading amount of Pd contained in each liter of catalyst is 0.3g. The catalyst can prevent surface carbon deposition, and has satisfactory burning resistance and heat stability.

The invention relates to an environmentally friendly modified bast fiber containing a rare earth-polysiloxane functional structure, and a preparation method thereof. The modified bast fiber is a novel bast fiber material prepared from natural bast fiber through a combined effect of rare earth lanthanum ions and silicone oil molecules on the natural bast fiber. The surface of the modified bast fiber does not have impurity phases. The modified bast fiber contains rare earth lanthanum ion-polysiloxane molecule chains with a hydrophobic property and a fire resistant property, thus a surface polarity and a hydrophilic property of the modified bast fiber are changed and the modified bast fiber can be dissolved well in a hydrophobic polymer material. The modified bast fiber does not have only excellent properties but also environmentally friendly and recyclable superiorities, and thus is expected to be composited further with a polymer to form a novel bast fiber-polymer environmentally friendly material with excellent mechanical properties, environmentally friendly characteristics, non-toxic characteristic and fire resistant characteristics. The modified bast fiber can be utilized widely for industries of automobiles, light rail, high-speed rail, office furniture, building and the like. The preparation method of the modified bast fiber containing a rare earth-polysiloxane functional structure has the advantages of simple operation, good suitability for large-scale production, environmentally friendly characteristic and good controllability.

The invention discloses a structure of a fire-proof explosion-proof type new energy vehicle battery, comprising a sealed shell and a battery body arranged in the sealed shell. A fire-proof material filling cavity is arranged between the sealed shell and the battery body, and the fire-proof material filling cavity is filled with a dry powder extinguishing agent. A fire-proof plate is fixed on the inner surface of the sealed shell, and a filling cavity of the fire-proof material is arranged between the fire-proof plate and the battery body. The sealing shell material sequentially comprises a metal layer from the inside to the outside, polypropylene plastic layer, ceramic silicone rubber layer, wherein the ceramicized silicone rubber layer is formed in an amount of parts by weight of the ceramic silicone rubber layer, It is prepared from the following raw materials: 100 parts of silicone rubber, 40-80 parts of porcelain filler, 5-20 parts of flux, 0. 2-1.5 parts of platinum catalyst, 2-8parts of hydroxyl silicone oil and 2-4 part of vulcanizing agent, wherein that porcelain filler is a mixture of aluminum silicate fiber and acicular wollastonite, wherein the mass ratio of aluminum silicate fiber to acicular wollastonite is 15-25:30-40.

The invention relates to a printing plate, in particular to a printing plate with a 3D effect. The invention belongs to the technical field of plate manufacturing. The invention discloses a printing plate with a 3D effect. The printing plate comprises a base material layer, a color layer deposited on the base material layer and a UV protection layer covering the color layer. Wherein the base material layer comprises a core layer and a background film layer compounded with the core layer; textures of wood grains, decorative patterns or patterns are also embossed on the background film layer. According to the invention, the operation of engraving and then printing is subversively provided, the background film layer is pasted on the PE-based core material through the pasting method, then engraving and printing are carried out, and finally the UV protective layer is coated, so that compared with the prior art, the production process is greatly simplified, and the production efficiency is greatly improved; the product prepared by the method has the advantage of good 3D visual effect.

The invention provides a palygorskite silane crosslinking agent preparation method and belongs to the field of high polymer materials. The method includes: dispersing activated palygorskite in an ethyl alcohol-water mixed solution, ultrasonic dispersing, adding an acidulated silane crosslinking agent, stirring, centrifuging, drying, conducting soxhlet extraction in a xylene solution, drying and grinding to obtain the palygorskite stem grafting silane crosslinking agent. Infrared absorption spectrum and scanning electron microscope analysis shows that the silane crosslinking agent is grafted on the surface of palygorskite clay, and a part of activated crosslinking group is reserved. Compared with vinyl trimethoxy silane of a common crosslinking agent of density polyethylene, under the condition of the same adding quantity and same processing technology, the palygorskite silane crosslinking agent is applied to crosslinking of the low-density polyethylene, and the mechanical property and gel content of the low-density polyethylene are improved. Meanwhile, combustion performance and thermal stability of a low-density polyethylene material are improved, the cost of the low-density polyethylene material is reduced, and the palygorskite silane crosslinking agent preparation method and the application have good application prospects.

The invention relates to a monolithic Pd catalyst for catalytic purification of industrial organic waste gas and a preparation method thereof. The catalyst comprises a cerium-zirconium solid solution, La2O3, Nb2O5, Al2O3, noble metal Pd and a cordierite-honeycomb ceramic supporter. The preparation method comprises the following step: coating the cerium-zirconium solid solution, La2O3, Nb2O5, a pseudo-boehmite binding agent and the noble metal Pd on the surface of the cordierite-honeycomb ceramic supporter in twice, wherein the total mass of the cerium-zirconium solid solution, La2O3, Nb2O5 and Al2O3 coated for each liter of catalyst is 40g; and the loading amount of Pd contained in each liter of catalyst is 0.3g. The catalyst can prevent surface carbon deposition, and has satisfactory burning resistance and heat stability.

The invention discloses a conductive anticorrosion coating and a preparation method thereof. The coating is mainly prepared from acrylic resin, an acrylic resin curing agent, a carbon nanotube, spherical graphite, nanometer conductive carbon black, an anticorrosion agent, a diluent, a flame retardant and a solvent. The conductive anticorrosion coating adopts a spraying or brushing mode to preparea conductive and anticorrosion coating layer on the surface of a well-treated workpiece, and can be widely applied to metal structural pieces such as grounding grid devices in the power industry and oil storage devices in the petrochemical industry, achieves the functions of electricity conduction, static electricity conduction and corrosion resistance, and meets the field service requirement. Thepreparation technology of the coating is simple, and industrialized production can be achieved easily.

The invention discloses regenerative polyethylene plastic where novel cross-linking agents are added and a preparation method thereof and relates to a high polymer material and a preparation method thereof. A moderately-crosslinked modification technological means is adopted, and the regenerative polyethylene plastic where novel cross-linking agents are added is prepared. Due to the fact that palygorskite clay crosslinking agents are added, silane crosslinking agents are decomposed under a certain temperature to generate free radicals, macromolecules of the regenerative polyethylene plastic are triggered to have a chemical crosslinking reaction, chemical bonds are formed between macromolecular chains, a net-shaped structure is formed, and therefore strength, rigidity, tenacity and heat resistance of the final product are all excellent. The formula of the prepared composite crosslinking agents is applied to crosslinking of waste polyethylene, not only are the mechanical property and the gel content of the waste polyethylene improved, but also combustion resistance and heat stability of waste polyethylene materials are improved, cost of low-density polyethylene materials is reduced, and therefore good application prospects are achieved.

The invention discloses a three-phase multifunctional electric power instrument with anti-burning performance, which belongs to the technical field of electric power instruments and comprises a fixedplate, a mounting plate is slidably connected to the front surface of the fixed plate, a rock wool protective shell is fixedly connected to the front surface of the fixed plate, and an electric powerinstrument body is fixedly mounted in the rock wool protective shell. Two reset springs are fixedly connected to the back face of the mounting plate, a fireproof cover is fixedly connected to one endof the back face between the two reset springs, and the fireproof cover is located on the front face of the electric power instrument body. According to the invention, the reset springs push the fireproof cover to the rock wool protective shell until the fireproof cover completely covers the electric power instrument body, the fireproof cover touches the valve on the water conveying pipe, coolingwater in the water storage tank falls into the water conveying pipe when the valve is opened, and the water conveying pipe sprays the cooling water out of the nozzle to extinguish fire. The problem that the conventional power meter cannot be self-protected in case of a fire is solved.

The invention discloses a manufacturing method of a fireproof insulation board. The manufacturing method of the fireproof insulation board is characterized in that a plurality of holes are punched in a polystyrene foam board; 2) a fireproof insulation pouring material is prefabricated, wherein the fireproof insulation pouring material is prepared from the following components in parts by weight: 100-200 parts of Portland cement, 10-20 parts of fluorite slag powder, 10-20 parts of superfine slag powder, 40-60 parts of cinder aggregate, 40-50 parts of aluminum oxygen chamotte, 20-30 parts of asbestos fiber, 5-10 parts of calcined diatomite, 5-10 parts of simethicone, 2-4 parts of liquid paraffin, 2-4 parts of aluminium hydroxide, 2-4 parts of asbestos fiber, 3-5 parts of cellulose ether and 2-3 parts of brucite powder; 3) the prefabricated pouring material is added in the holes, the holes are sealed by a fireproof sealant after adding the pouring material, and the product is dried. According to the manufacturing method of the fireproof insulation board, the anti-burning property of the insulation board is greatly improved, the smoke volume and the smoke toxin produced by the polystyrene foam board are greatly reduced, and the fireproof insulation board further has an excellent thermal insulation effect and a waterproof property.

A press forming die includes a protection film for preventing seizure during press forming which is formed on at least a forming surface that contacts a formed body. The protection film is formed by PVD process and, when the number of divisions of a plurality of individual sections into which an arbitrary selected section picked out of a surface of the protection film is divided is N, and the slope of the surface at an n-th division point from an end of the selected section is (dZn / dXn), has a root mean square R?q of 0.032 or less, where R?q is calculated by expression (1). Thus, the anti-seizure property of the press forming die having the protection film formed by PVD process can be improved.

The invention provides a burning resistant conveyor belt. The burning resistant conveyor belt is prepared from the raw materials of 55-65 parts of natural rubber, 5-15 parts of butadiene rubber, 25-35parts of styrene butadiene rubber, 2-4 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 4-6 parts of an antiager, 50-60 parts of super wear-resistant carbon black, 25-35 parts of a carbon formingagent, 1-3 parts of sulfur and 2-3 parts of an accelerant. Through the mixing use of the natural rubber, the butadiene rubber and the styrene butadiene rubber, and the addition of the carbon forming agent, the burning resistant performance of conveyor belt products is greatly improved, and under the harsh working conditions of steel plants, power plants and the like, the requirements of instantaneous and short-term use can be met.

The invention relates to the technical field of metal surface treatment, in particular to a surface treatment method for a continuous casting roller. The surface treatment method comprises the following steps that degreasing treatment is performed on a roller surface of the continuous casting roller; a cladding material is prepared, wherein the cladding material is powdery, and correspondingly comprises the following components of, by mass, 1.2-1.5% of Ni, 13% of Cr, 0.25% of C, 1.2% of Mn, 0.5% of Si and the balance Fe; and the cladding material is clad on the roller surface of the continuous casting roller through laser scanning so as to form a cladding layer.

The invention relates to the technical field of material science, in particular to a functional curing agent and a method for preparing bisphenol A type epoxy resin thereof. Magnesium hydroxide and adipic acid are added into a flask, added into absolute ethyl alcohol to react for 6 h at 80 DEG C and then washed through absolute ethyl alcohol; 5-10 g of the product in the step A is added into the flask, and thionyl chloride is added; 5-10 g of the product in the step B is added into the flask, 100-300 ml of analytically pure dimethyl formamide (DMF) is added into each gram of product in the step B, the analytically pure DMF is utilized for washing, DMF is removed through drying in a vacuum drying oven at 90 DEG C, and the curing agent FOIHM is obtained. The functional curing agent is a hybrid functional material and has the advantages of being easy to prepare and low in cost, and the epoxy resin curing capability of the prepared curing agent is much better than that of a commercially available curing agent at the same grade. The adding of magnesium hydroxide also potentially improves combustion resistance of the composite material.