19 results about "Asbestos fiber" patented technology

The utility model discloses a collection device for combustion products of an aero-engine fuel-rich gas generator, which adopts an asbestos fiber material, a zeolite molecular sieve, sandy soil and a filter screen for multiple filtration, and filters and collects solid-liquid components in outlet flue gas; and under the action of the water-cooling coil pipe, the residual outlet flue gas is cooled to a safe temperature, and the low-pressure gas tank is utilized to complete the collection of gas components. The collecting device disclosed by the utility model is stable in material performance, low in price, good in usability and service life, and capable of obtaining remarkable working and economic benefits.

The invention relates to a manufacturing method for erecting an outdoor firewall. The outdoor firewall is composed of vertical rods and middle partitions. The firewall is lifted manually, electrically and the like, forest fire spreading combustion can be prevented, and large-area spreading cannot be achieved. The vertical rods can be made of iron, steel, aluminum and other metals, and are coated with antirust paint, fireproof paint and the like. A foundation section, a middle section and a vertex section with standard specifications can be manufactured, and the sections are assembled during use, and are fixed in overground soil by using recyclable soil expansion screws through diagonal draw bars or diagonal draw lines of the sections and underground pointed cones, X-shaped side wings and the like of the foundation section, so that the middle partition is mainly supported. The middle partition is made of asbestos fiber cloth and nets or metal nets such as iron sheets, steel sheets and aluminum sheets, roller shutters and the like, is higher than nearby trees, and is mainly used for preventing fire and preventing flames from burning towards other trees.

The invention relates to a method for processing a solid material comprising asbestos fibres, comprising the following steps: - grinding the solid material, - bringing the solid material into contact with an aqueous acid solution, resulting in at least some of the asbestos fibres being dissolved, - separating the liquid (5) and solid (4) fractions of the products resulting from the dissolving process. This method is characterised in that it further comprises the following steps: - diffusion dialysis of the liquid fraction (5) in order to produce a regenerated aqueous acid solution (9), - using the regenerated aqueous acid solution (9) in the step of bringing the ground solid material into contact with an aqueous acid solution. The invention also relates to a plant for carrying out the method according to the invention.

The invention discloses a method for preparing a plate by consuming fly ash of a novel building material. The plate prepared by consuming fly ash comprises the following raw materials: 50%-75% of fly ash, 10%-15% of quicklime, 3%-5% of plasticizer, 4%-8% of PVC resin, 2%-8% of nylon fiber and 5%-15% of asbestos fiber. The fly ash is used as a basic material to effectively increase the consumption amount and the utilization rate. A plurality of raw materials are mixed and then extruded to form strips which are then spliced ​​to form the plate. The structural strength is ensured by controlling the process conditions and the flow. The plate can be used as a filter plate for filtering after being formed, thereby adding a new function, achieving a good utilization effect and emission reduction effect, being beneficial to production and preparation, and being convenient for popularization and use.

The sealing gasket based on non-asbestos fiber rubber compression comprises a backing ring, the inner ring face of the backing ring is provided with an inserting column which is coaxial with the backing ring, the two ends of the inserting column extend out of the upper portion and the lower portion of the backing ring respectively, and the top end of the inserting column is vertically provided with a through hole in a penetrating mode. According to the sealing gasket based on non-asbestos fiber rubber compression, the two metal rings and the springs are arranged, when the sealing gasket is used, after the backing ring is clamped by a flange structure, a certain compression space still exists due to the fact that the interior of the backing ring is a cavity, and after the backing ring is further compressed, the sealing gasket is not prone to deformation. When the gasket is in use, the plurality of springs in the gasket ring are synchronously compressed, at the moment, the plurality of springs always generate outward thrust, and the metal rings at the two ends of the plurality of springs always apply thrust in opposite directions to the two surfaces of the gasket ring, so that the surfaces, in contact with the flanges on the two sides, of the gasket ring are always clung to the flanges, and the sealing effect of the gasket is ensured; and the service life of the gasket is prolonged.

The application relates to the technical field of concrete waste slurry application, and particularly discloses a process for preparing recycled aggregate from non-fluid silicate concrete waste. The process comprises the following steps: (1) after the non-fluid silicate concrete waste is finely ground, the non-fluid silicate concrete waste is uniformly mixed with a silicate cement, graphene, asbestos fiber, a ferrous sulfate or ferrous sulfate aqueous solution, and then granulated, the obtained granules are standard cured, and a pretreated body is obtained after completion; (2) the pretreated body is immersed in a calcium bicarbonate solution, after completion, the pretreated body is separated out and placed in an EDTA or EGTA-containing sodium carbonate solution for activation treatment. After completion, the obtained pretreated body is standard cured again, and recycled aggregate is obtained. The above process of the application utilizes the characteristics of the non-fluid silicate concrete waste to prepare high-strength recycled aggregate, not only realizes resource utilization of the non-fluid silicate concrete waste, but also makes the non-fluid silicate concrete waste better play its own advantages to obtain high-performance recycled aggregate products.

The application provides a non-asbestos fiber rubber gasket for a chemical plant, and relates to the technical field of rubber gaskets. The non-asbestos fiber rubber gasket for the chemical plant comprises a gasket body, trapezoidal protrusions and trapezoidal grooves are alternately distributed on the upper and lower ends of the gasket body, the distal sides of the trapezoidal protrusions are uniformly provided with round convex points, and the distal sides of the trapezoidal grooves are uniformly provided with round convex points; the rubber material used by the non-asbestos fiber rubber gasket comprises the following raw materials in parts by weight: 8-10 parts of rubber master batch, 1-2 parts of non-asbestos fiber, 0.2-0.3 parts of accelerator, 0.2-0.3 parts of anti-aging agent, 0.2-0.4 parts of vulcanizing agent, 0.1-0.3 parts of foaming agent and 0.2-0.4 parts of crosslinking agent. The non-asbestos fiber rubber gasket has better mechanical properties, moderate hardness, better sealing effect, higher compression rate and higher resilience, and can be used for a longer time during pipeline maintenance and replacement.

The utility model relates to circuit board technical field especially relates to a fireproof circuit board. The utility model provides such a fireproof circuit board, including installation base, circuit board body, asbestos fibre fireproof buffer layer, aluminium hydroxide flame -retardant isolation layer, flame -retardant epoxy resin layer, deflector, circuit board wiring interface and fireproof cover, installation base top installs circuit board body, and the right -hand member of circuit board body has integrated circuit board wiring interface, and asbestos fibre fireproof buffer layer is fixed on installation base. Through the multilayer protection structure that fireproof cover, asbestos fibre fireproof buffer layer, aluminium hydroxide flame -retardant isolation layer, flame -retardant epoxy resin layer etc. constitute, combine the active fire extinguishing mechanism of heptafluoro propane fire extinguishing bag and high temperature crushing layer, form the complete protection chain from the outside barrier to internal fire extinguishing, can effectively block external flame burn circuit board body, and the fireproof effect is greatly promoted.

The utility model discloses a tensile flame-retardant double-sided tape, and relates to the technical field of double-sided tapes. The composite material comprises a base body layer, tensile layers are arranged at the top and the bottom of the base body layer, heat insulation layers are arranged on the side faces, away from the base body layer, of the tensile layers, flame-retardant layers are arranged on the side faces, away from the tensile layers, of the heat insulation layers, and adhesive layers are arranged on the side faces, away from the heat insulation layers, of the flame-retardant layers. The tensile layer, the flame-retardant layer and the heat insulation layer are arranged, the polyethylene film is used for isolating direct combustion of flames, the chlorinated rubber releases chlorine for flame retardance when being heated, the flame-retardant particles are used for further flame retardance, the asbestos fiber plays a role in heat insulation and avoids temperature transfer, and the double-sided adhesive tape remarkably improves the flame-retardant capacity. And the PTFE film, the ETFE film and the tensile nylon wires improve the tensile strength, so that the service life of the whole double-sided tape is prolonged, the stability of the double-sided tape is also improved, the double-sided tape is more reliable and effective in the use process, and people can operate and use the double-sided tape conveniently.

The invention discloses a preparation method of a high-strength anti-seepage type heat-preservation sound-insulation cement-based mortar material, which comprises the following steps: (1) mixing rubber particles, vitrified micro bubbles, granulated blast-furnace slag powder, desulfurized gypsum powder, carbide slag powder and calcium silicate powder, adding water, uniformly stirring, then curing, crushing the obtained consolidated body after the curing is completed, and crushing the crushed consolidated body into powder for later use; the pretreated sound absorption material is obtained. And (2) mixing the pretreated sound absorption material with water to form a wet material, then placing the wet material in a closed reactor containing carbon dioxide gas for reaction, and after the reaction is completed, drying to remove moisture to obtain the modified sound absorption material. And (3) uniformly mixing Portland cement, sand, the modified sound absorption material, modified asbestos fiber, potassium magnesium phosphate cement, a water reducing agent and a defoaming agent serving as raw materials, adding mixing water, and uniformly stirring. The method provided by the invention not only effectively overcomes the problem of degradation of mechanical properties of the cement-based material caused by rubber particles, but also improves the waterproof performance of the cement-based material.

The application provides a temperature stratification preventing marking paint and a preparation method thereof, and belongs to the technical field of paints.The marking paint comprises the following raw materials in parts by weight: 1-2 parts of a temperature sensitive reversible crosslinking agent, 15-30 parts of an epoxy resin, 10-20 parts of an acrylic monomer, 1-2 parts of an emulsifier, 2-4 parts of temperature sensitive microcapsules, 0.5-1 part of nano titanium dioxide, 1-2 parts of inorganic asbestos fiber, 0.5-1.5 parts of high molecular fiber, 0.01-0.02 parts of an initiator, 3-4 parts of a water soluble epoxy curing agent, 2-3 parts of hollow glass microbeads, 2-4 parts of an additive, and 40-80 parts of water.The marking paint has temperature sensitive characteristics, is a weak gel network at normal temperature, inhibits filler settlement, hydrogen bonds are broken when construction is heated, the paint restores fluidity, crosslinking is recovered after temperature reduction, has relatively high strength and hardness, and the mechanical properties such as tensile strength, bending strength and hardness of the paint film are significantly improved, and the wear resistance and impact resistance are also enhanced.

The utility model provides a portable industrial computer applicable to a charging pile, which belongs to the technical field of industrial computers and comprises a shell and a mainboard, the mainboard is positioned in the shell, a fire extinguishing component is further arranged in the shell and comprises a miniature nitrogen storage tank and a plurality of groups of sprayers, the miniature nitrogen storage tank is connected with the shell through a fixing part, and the miniature nitrogen storage tank is connected with the shell through the fixing part. A mounting plate is arranged at the bottom of the shell, two sets of protective shells are arranged on the mounting plate, one end of each protective shell is rotatably connected with the mounting plate, a heat dissipation assembly is arranged in the shell and comprises a vapor chamber, the vapor chamber is located on the mainboard, and a controller is arranged on one side of the shell. According to the device, the fire extinguishing assembly is arranged in the shell, so that a user can be protected in time when facing fire hazards, and the safety of the device is improved; and a user can enhance the fireproof performance and the ventilation and heat dissipation effects through asbestos fibers and a fireproof ventilation valve in the protective shell, so that the user is more secure in the use process.

The present invention relates to the technical field of composite materials, and specifically relates to a composite material repair slurry and a preparation process thereof. The composite material repair slurry includes component A and component B. Component A includes hydroxyacrylate monomer, polyethylene glycol monomethyl ether, polyisocyanate, acrylate monomer, blocking agent, and initiator; component B includes epoxy resin, reinforcing fiber, nano-particle, ethyl acetate, and phosphoric acid. The reinforcing fiber includes carbon fiber and asbestos fiber, and the weight ratio of carbon fiber to asbestos fiber is 1-4:1. Modifying isocyanate with acrylate monomer improves the crosslinking effect of isocyanate emulsion as a curing agent; reacting ethyl acetate, epoxy resin, and phosphoric acid to open the epoxy ring and react with isocyanate, further improving the curing crosslinking degree of epoxy resin and isocyanate, and greatly improving the bonding strength and heat resistance of the composite material repair slurry.

The utility model belongs to the technical field of cement boards, and particularly relates to an energy-saving heat-preservation fiber cement board which comprises a cement board body, a metal board is arranged in the cement board body, a fiber cement base material layer is connected to the outer side of the metal board, a metal net rib layer is connected to the outer portion of the fiber cement base material layer, and the metal net rib layer is arranged on the cement board body. A heat preservation layer is arranged on the outer side of the metal net rib layer. A decorative face is arranged on the outer side of the heat preservation layer, and a plurality of corrugated rods are fixed to one end face outside the cement board body. According to the metal plate, the overall strength of the cement plate can be improved, the fracture risk of the plate in the using process is prevented, the fiber cement base material layer is formed by mixing and condensing cement, an adhesive and thermoasbestos fibers, the toughness and crack resistance of the plate can be improved, the fiber cement base material layer and the metal plate can be surrounded and protected by the metal net rib layer, and the service life of the plate is prolonged. The layering between the fiber cement base material layer and the metal plate can be prevented, and the integrity and the strength of the cement plate are effectively improved.

The application provides a structure heat preservation integrated outer wall and a manufacturing method thereof, the vertical light steel keel of the outer wall comprises multiple groups of reinforcing keels and C-shaped keels arranged side by side in the width direction of the wall body, the reinforcing keel is close to the outer leaf wall, at least one C-shaped keel is arranged on the side of each reinforcing keel, the calcium silicate board is installed on the two sides of the reinforcing keel and the C-shaped keel and forms reinforcing keel cavities and C-shaped keel cavities; the thickness of the inner leaf wall is not less than 30 mm, and the thickness of the outer leaf wall is not less than 50 mm. The wall body of the application does not need to use asbestos fiber as a heat preservation material, and can meet the energy saving requirements of local areas including cold northern areas, the wall body has high keel strength, good bearing capacity and is not easy to deform, and forms a flexible connection with the building main body, the wall body can adapt to slight displacement of the main structure and reduce the possibility of wall body cracking.

The invention relates to the technical field of coke oven repair. The invention discloses a method for quickly repairing blow-by of a 7m coke oven frame and controlling oven temperature. The method comprises the following steps: preparing asbestos fiber ropes; pretreating a plurality of pieces of heat preservation cotton; construction conditions of operation furnace numbers and furnace temperature control before furnace frame repairing operation are determined; performing heat insulation treatment on the furnace mouth; furnace frame blow-by repairing treatment is carried out; and furnace temperature control and production recovery after furnace frame repair operation. According to the method, the hot repair efficiency of furnace frame sealing can be improved, the long-period sealing repair effect on the furnace frame is achieved, the great fluctuation of the furnace temperature of the carbonization chamber is reduced, the safety of operators is guaranteed, and a solution is provided for furnace temperature adjustment and production recovery during the repair operation period and after the repair operation.

The utility model relates to the technical field of steelmaking, and discloses an improved structure of a furnace cover of an intermediate frequency furnace in a steel plant, which comprises a furnace body, a flange arranged on the outer side and a furnace cover body arranged on the top, the sealing assembly is arranged at the bottom of the furnace cover body and comprises a first sealing ring fixedly connected to the bottom of the furnace cover body, an induction coil is arranged in the furnace body, a mica base plate is arranged at the top of the induction coil, and a first asbestos fiber plate is arranged at the top of the mica base plate; a second asbestos fiber board is arranged at the top of the first asbestos fiber board; by arranging the sealing assembly, the connecting structure of the furnace cover body and the induction coil is optimized, the stability and the sealing performance of the furnace cover body are improved, the service life of the furnace cover body is prolonged, the damage influence of steel leakage on equipment is reduced, the influence on production is reduced, the maintenance cost of the equipment is reduced, and therefore the production efficiency and the economic benefits of a steel plant are improved.

This invention discloses a process for improving the strength of willow twigs used in willow weaving. Belonging to the field of willow weaving technology, this method utilizes asbestos rubber paper as the winding material. Asbestos rubber paper is widely available and low in cost. After being cut, it forms a winding strip, which is then wrapped layer by layer along a spiral winding track around the outside of peeled willow twigs to form a rolled willow twig. Taking advantage of the high strength of asbestos fiber, an asbestos rubber composite material layer is applied to the outside of the willow twig, forming an integral part with it and enhancing its mechanical properties. Simultaneously, the outer asbestos rubber composite material layer, containing rubber components, acts as an elastic material to buffer the impact force generated when the willow woven product is dropped, thus preventing the willow twig from breaking upon impact and ensuring the load-bearing capacity and impact resistance of the willow woven implements. Furthermore, the outer asbestos rubber composite material layer provides good abrasion resistance.

The invention describes a device and a method (100) for detecting asbestos fibres (12) in a building material (11) and / or in rubble fractions (11), wherein the method (110) comprises: irradiating a building material (11) and / or rubble fractions (11) with unpolarized white light (λ0); subsequently splitting reflected light (λref) into polarized light beams (λref, pol) in at least two polarization directions; and subsequently detecting the polarized light (λref, pol) reflected by the building material and / or by the rubble fractions and divided in at least two directions, evaluating the detected reflected polarized light (λref, pol) in order to detect a possible colour difference in the at least two polarization directions, wherein asbestos fibres (12) are present in the building material (11) and / or in the rubble fractions (11) when the colour difference is detected.