280 results about "Steel wool" patented technology

A container assembly heats or cools a product inside an inner container. An outer jacket at least partially surrounds the inner container, with a first internal volume and a second internal volume in the space between the outer jacket and the inner container. A first temperature-change reagent is contained inside the first internal volume, and a second temperature-change reagent is held in the second internal volume, with a reagent separator between the two. Several penetrators are disposed to penetrate the reagent separator to produce openings through the separator and through which the two reagents can mix. Steel wool inside the first internal volume acts as a steam condenser. The outer jacket includes a jacket top ring secured around an upper surface of a standard can, a jacket body secured to the jacket top, and a flexible jacket bottom that carries several spikes molded onto the jacket bottom.

The invention provides two-coating type ultraviolet light curing paint, which comprises primer and finish paint, wherein the finish paint comprises 15 to 25 weight parts of high-functionality polyurethane crylic acid resign, 10 to 15 weight parts of hyperbranched polyester acrylic resin, 10 to 20 weight parts of organic-inorganic hybrid resin, 10 to 15 weight parts of hexa-functionality acrylate monomers, 2 to 5 weight parts of photoinitiators, 1 to 2 weight parts of adhesion promoters, 20 to 60 weight parts of diluents and 0.2 to 2 weight parts of auxiliaries. The two-coating type ultraviolet light curing paint solves the technical problems that the wear-resisting and steel wool friction resistance degrade of the existing ultraviolet light curing paint is low, the vacuum coating variety is single, and the cost is high.

The invention discloses a brake shoe friction material, belonging to brake shoe material. Based on the traditional half-metal formula, the invention is pressed according to the production method of general brake shoe with the weight proportions of 5%-10% of the modified colophony, 5%-15% of the barium sulfate, 15%-20% of the steel wool, 5%-10% of the friction powder, 8% of the tyre powder, 4%-10% of the graphite, 5%-10% of the coke powder, 5%-10% of the potash feldspar, 2% of the light calcium carbonate, 2% of the antimony sulfide, 4% of the natural fiber, 2% of the rigid fiber, 5%-15% of the meerschaum, 6% of the iron powder, 2% of the zircon, 5%-10% of the vermiculite, 1% of the nitrile, 2% of the carbon, and 3% of the copper fiber. The invention has the advantages of good high-temperature and hot recession resistance, selecting the colophony with high temperature resistance as the bonder, hardly damaging the dual parts, selecting the friction material and metallurgy material with small hardness, and cheap cost.

Systems and methods for treating contaminated impound water are disclosed which include a pretreatment stage wherein contaminated water is oxidized, pH adjusted, treated with a coagulant, and treated with a polymer to form a flocculent comprising bulk solids and fine particles. The oxidizing step may include two or more stages, one of which is a treatment with ferrous iron generated from iron filings or steel wool. Bulk solids are removed, and the liquid portion containing fine particles is applied to a low pressure microfiltration unit to remove the fine particles resulting in a microfilter effluent. The microfilter effluent may be directly fed to a reverse osmosis (R / O) unit. The R / O reject may be recycled to another R / O unit (second pass). The R / O permeate may be blended as needed with the microfiltration effluent to provide the final discharge effluent with reduced contaminant levels and maximized throughput. The R / O second pass reject water is further oxidized and recycled back to the front of the system to be retreated.

Fuel cell electrodes are described which comprise a non-woven network of conductive fibers, such as a carbon fleece, nickel foam sheet or stainless steel wool layer, plus additional activated carbon material, carrying one or more catalyst components and at least one polymeric substance as binder and / or repellancy agent to establish three zone interfaces (liquid-solid-liquid) or three phase interfaces (gas-liquid-solid). The electroactive catalyzed material is embedded into the conductive structure by specified deposition processes, such as coating, blading or spraying.

The invention discloses a composition brake shoe for a railway freight car, and a method for manufacturing the same. A friction piece of the composition brake shoe for the railway freight car is synthetised by using following materials by weight parts: 6-10 parts of nitrile rubber, 2-8 parts of modified phenolic resin, 3-6 parts of steel wool fibers, 9-16 parts of sepiolite fibers, 2-16 parts of composite mineral fibers, 5-13 parts of graphite, 0.4-2 parts of calcined bauxite, 20-24 parts of barium sulfate, 8-12 parts of potassium feldspar powder, 10-20 parts of iron powder, and 1-3 parts of additives. The friction piece of the composition brake shoe is formed through the steps of dosing, banburying or mixing, crashing, hot press molding and curing forming, and thermal processing. The composition brake shoe is capable of well satisfying various performance indexes requested in PRC (People's Republic of China) railway industrial standard TB / T2403-2010, and can be applied to railway freight cars traveling at the highest speed of 120km / h and axle load of the composition brake shoe is not greater than 25 tons; besides, the composition brake shoe has stable friction properties and excellent friction resistance, and is low in attrition to wheels and low in braking noise; and as a result, potential quality hazards ( such as brake shoe body breakage, slag and block dropping, metal inlaying and hot cracks) endangering traveling safety are fundamentally solved.

Antireflective films are described having a surface layer comprising a the reaction product of a polymerizable low refractive index composition comprising at least one fluorinated free-radically polymerizable material and surface modified inorganic nanoparticles. A high refractive index layer is coupled to the low refractive index layer. In one embodiment, the high refractive index layer comprises surface modified inorganic nanoparticles dispersed in a crosslinked organic material. The antireflective film is preferably durable, exhibiting a haze of less than 1.0% after 25 wipes with steel wool using a 3.2 cm mandrel and a mass of 1000 grams.

A container assembly heats or cools a product inside an inner container. An outer jacket at least partially surrounds the inner container, with a first internal volume and a second internal volume in the space between the outer jacket and the inner container. A first temperature-change reagent is contained inside the first internal volume, and a second temperature-change reagent is held in the second internal volume, with a reagent separator between the two. Several penetrators are disposed to penetrate the reagent separator to produce openings through the separator and through which the two reagents can mix. Steel wool inside the first internal volume acts as a steam condenser. The outer jacket includes a jacket top ring secured around an upper surface of a standard can, a jacket body secured to the jacket top, and a flexible jacket bottom that carries several spikes molded onto the jacket bottom.

The invention discloses a UV curable coating used for IML, its preparation method and application. The UV curable coating used for IML comprises: 10-20 parts of aliphatic polyurethane acrylate, 5-15 parts of hyperbranched polyester acrylate, 5-15 parts of an active diluent, 0.1-1 part of a leveling agent, 0.5-2 parts of nanoparticles, 1-2 parts of a photoinitiator, and 50-70 parts of an organic solvent. The preparation method includes: mixing the reactive diluent, the leveling agent and the organic solvent evenly; then adding the aliphatic polyurethane acrylate and the hyperbranched polyester acrylate, mixing them uniformly, then adding the nanoparticles and the photoinitiator, and mixing them uniformly, thus obtaining the UV curable coating used for IML. The UV curable coating used for IML can be used for preparing hard films for IML, and can effectively reduce the cost. The obtained hard films for IML have high hardness, excellent resistance to steel wool scraping and stain resistance.

An exhaust muffler for an internal combustion engine included in a motorcycle includes a perforated inner pipe (32), an outer pipe (31) coaxially surrounding the inner pipe (32), and a glass wool mat (33) packed in a space between the inner pipe (32) and the outer pipe (31). A three-layer protective structure is formed by winding an inner stainless steel wire mesh (34) wound around the inner pipe (32), winding a stainless steel wool mat (35) around the inner stainless steel wire mesh (934), and winding an outer stainless steel wire mesh (36) around the stainless steel wool mat (35). The glass wool mat (33) is wound around the three-layer structure. The three-layer structure extends the life of the glass wool mat (33) even if the temperature and pressure of the exhaust gas discharged by the internal combustion engine increase.