46results about How to "Endothermic" patented technology

The invention discloses a rotary heat accumulating type heat exchanger, which comprises a heat accumulating body (10), a rotating shaft (4) and disk rotary valves, wherein the rotating shaft movably penetrates through the heat accumulating body, two ends of the heat accumulating body are respectively provided with a cold air box (2) and a hot air box (21), the cold air box is provided with a cold air waste chamber (17) and a combustion air chamber (18), the hot air box is provided with a hot air waste chamber (19) and a high-temperature air chamber (20), the cold air box and the hot air box are internally provided with the disk rotary valves, each disk rotary valve comprises a radial current divider (8) provided with inner current division holes (16) and outer current division holes (15) at intervals, and a circumferential current divider (13); and a valve seat is fixedly arranged on the rotating shaft between the radial current divider and the circumferential current divider. According to the invention, the heat efficiency can be improved to above 90 percent, fuel consumption can be reduced, operation cost of an industrial furnace is reduced, and the quality of combustion air is improved. The rotary heat accumulating type heat exchanger has the advantages of compact structure, stable and reliable use, convenience for installation and maintenance, and long service life.

Provided is a non-woven fabric wet process net forming technology. Natural fibers and synthetic fibers are taken as main raw materials, the fiber raw materials arranged in a water medium are opened into single fibers, different fiber raw materials are used for being mixed to form fiber suspension pulp, the suspension pulp is conveyed to a net forming mechanism, and a net is formed by the fibers in a wet state and then is strengthened into fabric. According to the non-woven fabric wet process net forming technology, the wet state opening and wet method net forming technologies are adopted, and the fibers in the manufactured fiber net are arranged disorderly and are almost isotropic; the fiber net is good in evenness, high in evenness degree, superior in filtering function, high in strength, modulus and elasticity, resistant to abrasion and good in temperature resistance and heat insulation effect and fire resistance, and has the functions of heat absorption, moisture absorption, deodorization, odor resistance, bacteria resistance and prevention, freshness preservation and the like and the function of electrical insulation.

The invention discloses a stepped flame-retardant rubber material. The material comprises, in parts by weight, 80-120 parts of rubber, 80-200 parts of flame retardant, 40-60 parts of filler, 0.3-2 parts of auxiliary agent, The flame retardant is an inorganic flame retardant powder coated with a polymer modifier on the surface; the preparation method includes the steps of: preparation and modification of the inorganic flame retardant powder, and preparation of a flame retardant rubber material. Through the stepped flame-retardant rubber material and the preparation method thereof provided by the invention, the obtained rubber material has multi-stage flame-retardant properties, has flame-retardant effects in a wide high temperature range, and greatly improves the safe use performance of rubber.

The invention discloses a step-type flame-retardant plastic and a preparation method thereof, which comprises the following components in parts by weight: 800-1200 parts of plastic, 30-120 parts of inorganic flame-retardant powder, 3-8 parts of zinc borate, silicon micropowder 2 to 5 parts, 1 to 2 parts of smoke suppressant, 1 to 2 parts of calcium carbonate, 0.3 to 1.2 parts of polymer dispersant, 0.3 to 2 parts of auxiliary agent; the preparation method includes the steps of: preparing inorganic flame retardant powder, Modification of flame retardant materials, preparation of composite flame retardant materials, preparation of flame retardant plastics. Through the stepped flame-retardant plastic and its preparation method provided by the present invention, the obtained plastic can form different flame-retardant shells at different temperatures, thereby having multi-level flame-retardant effects and forming stepped flame-retardant protection for plastic substrates.

The invention relates to the technical field of edge banding, in particular to an ABS edge banding and a preparation method thereof. The edge banding includes an edge banding body, and the back of the edge banding body is sequentially compounded with a primer layer and a hot melt adhesive layer , the edge banding body is made of raw materials such as ABS resin, nano-calcium carbonate, and acrylic elastomer emulsion, and the primer layer is made of raw materials such as acrylate prepolymer, diluted monomer, and nano-carbon black. The present invention uses the primer layer as the transition layer to realize the stable bonding of the edge strip body and the hot melt adhesive, and has excellent stability, which can well overcome the problem of aging and degumming.

A high-temperature resistance impregnating varnish and a preparation method thereof are disclosed. The varnish is characterized by being composed of following components in parts by weight: 30 to 34 parts of aniline formaldehyde resin, 5 to 7 parts of dimethyl dichlorosilane, 4 to 5 parts of acrylonitrile, 2 to 3 parts of butadiene, 3 to 4 parts of phthalic anhydride, 1 to 2 parts of boric acid, 20 to 23 parts of xylene, 4 to 5 parts of cobaltous naphthenate, 2 to 3 parts of tetraethylenepentamine, 1 to 2 parts of tert butyl peroxypivalate, 3 to 4 parts of polyoxyethylene octylphenol ether, 1 to 2 parts of 2-heptadecenyl-N-aminoethylimidazoline, 4 to 5 parts of diatomite and 4 to 5 parts of film forming agent. The impregnating varnish has the advantages of high-temperature resistance, high dampness resistance, acid-alkali corrosion resistance, salt smog proof, good electric insulation property and high mechanic strength. The heat conductivity of the varnish is improved, and the varnish can work at the temperature of 200 DEG C for a long period and at the temperature of 220 DEG C for a short period. The design requirements are fulfilled.

The invention discloses a fire extinguishing agent, which is prepared from the following raw materials in parts by weight: 100 parts of ammonium polyphosphate, 15-20 parts of potassium sulphate, 15-20 parts of sodium bicarbonate, 5-10 parts of magnesium chloride, 5-10 parts of mica, 10-15 parts of silicone oil, 5-10 parts of activated clay, 5-8 parts of red phosphorus, 5-10 parts of zinc borate, 5-10 parts of antimonous oxide and 5-15 parts of white carbon black. The fire extinguishing agent is compounded by multiple components, thus, type-A fire, type-B fire, type-C fire and type-D fire can be extinguished at the same time. Moreover, a flame retardant component is left on an extinguished object after the fire is extinguished so as to avoid resurgence. As all the raw materials are environmental protection materials, the fire extinguishing agent disclosed by the invention has no toxin, smell, pollution or radiation, and harmful gas cannot be generated when the fire is extinguished. After the fire extinguishing agent is sprayed onto a burning object when the fire is extinguished, smoke can be eliminated and toxic gas can be adsorbed so as to prevent the condition that people are suffocated from occurring as possible.