279 results about "Steel wool" patented technology

The present invention is a system and method to significantly reduce noise associated with air-moving devices such as an axial flow fan using a fan shroud and barrel combination with built in silencers such as Helmholtz resonators. The invention can be applied to a variety of applications such as a thermal management system for a fuel cell powered vehicle. The resonator can be a hollow cavity in networks attached to an outer or inner barrel or shroud and tuned to reduce noise at predetermined noise frequency ranges within the airflow. The invention can also attach stator members on the inner surface of the outer barrel to further reduce noise. Additional sound absorbing material, such as steel wool, can be disposed within the resonator cavity.

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 emboidiment, 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 cleaning device includes a cleaning member, a collection member, an electrical field generator, and a separation member. The cleaning member has a surface capable of moving while contacting a surface of a cleaning target to remove toner on the surface of the cleaning target. The collection member has a surface capable of moving while contacting the surface of the cleaning member to collect the toner on the surface of the cleaning member. The electrical field generator generates an electrical field to move the toner from the cleaning member to the collection member. The separation member contacts the surface of the collection member to separate the toner on the surface of the collection member. The collection member has a centerline average surface roughness of not more than 0.1 μm and shows a surface hardness rank of B or higher in a steel-wool scratch test.

A latent electrostatic image bearing member including at least a support, a photoconductive layer on the support and a surface layer on the photoconductive layer, wherein a film having the same composition as the surface layer is formed on a slide glass such that the film had a thickness of 5 μm; and the haze value measured after rubbing the film with a steel wool of #000 and a load of 500 gf for 50 times is 10% or less.

The invention discloses an ultraviolet-curing protective paint applicable to the surface of a polyester substrate, the compositions of the weight percent are as followings: 10 to 35 wt percent of bis-functional aliphatic polyurethane acrylates, 5 to 25 wt percent of multifunctional aliphatic polyurethane acrylates, 5 to 40 wt percent of novolac epoxy acrylates, 5 to 20 wt percent of pure acrylic ester of macromolecule, 5 to 40 wt percent of chloride polyester acrylates and 0.01 to 1 wt percent of addition agent, the ultraviolet-curing protective paint is applicable to the surface of the polyester substrate PET, the protective paint has excellent adhesion and high temperature resistance, the sticking membrane is normal at the high temperature of 180 DEG C and hot pressing for 30 seconds, at the same time, the surface of the polyester substrate PET has the advantages of excellent abrasion resistance and no friction mark after rubbing repeatedly a steel wool.

The invention relates to a high-friction coefficient composition brake shoe. The high-friction coefficient composition brake shoe comprises a steel backing and a friction material, the friction material comprises the following raw materials including, by weight, 1-5 parts of aramid fiber, 8-12 parts of butadiene-acrylonitrile rubber, 0.5-1 part of stearic acid, 0.3-1 part of an accelerant, 0.6-1 part of sulphur, 0.5-1 part of zinc oxide, 4-7 parts of phenolic resin, 10-20 parts of inorganic composite fiber, 8-15 parts of iron powder, 10-20 parts of barium sulfate, 7-15 parts of kibdelophane powder, 5-10 parts of steel wool fiber, 1-3 parts of bauxite, 8-15 parts of potassium feldspar powder, 2-5 parts of mica, 2-5 parts of flake graphite, 5-10 parts of sepiolite fiber and 2-5 parts of molybdenum disulfide. By means of the high-friction coefficient composition brake shoe, the change of the speed of the wear rate of the high-friction coefficient composition brake shoe can be basically identical to the change of the adhesion coefficient of a wheel track, the abrasion loss when a vehicle is braked is less, failure can not occur in braking, and the traffic safety is guaranteed. The invention provides a production method of the high-friction coefficient composition brake shoe at the same time.

The invention relates to a brake pad, which comprises a metal framework and a friction material bonded on the metal framework, wherein the friction material comprises 8 to 12 parts of phenolic resin, 20 to 30 parts of potassium titanate whisker, 3 to 7 parts of cellulose, 5 to 9 parts of friction powder, 10 to 15 parts of mineral fibers, 2 to 5 parts of aramid fibers, 3 to 8 parts of steel wool fibers and 25 to 35 parts of barium sulfate. The preparation method comprises the steps of material preparation, material mixing, hot-forming, heat treatment, grinding and spraying. The phenolic resin plays a bonding role; the potassium titanate whisker and the cellulose reinforce a basal body and stabilize a friction factor and have a high friction performance; the mineral fibers and the friction powder interact to improve and stabilize the friction factor and have high heatfading stability; the aramid fibers and the steel wool fibers can increase the strength of products and improve the heat conductivity of the products; and the barium sulfate improves heat performance and wear resistance. The brake pad has the advantages of small metal material content, medium hardness, high water resistance, small damages to coupling elements in braking and long service life.

The invention provides an ultraviolet curing coating composition with high wear resistance and fingerprint resistance and a preparation method thereof. The composition is prepared from the following components in parts by weight: 30-50 parts of high-functionality acrylate resin, 5-15 parts of fluorine-modified acrylate oligomer, 5-20 parts of an acrylate monomer, 5-15 parts of nanoparticle dispersion liquid, 5-9 parts of a photoinitiator, 0.05-2 parts of an auxiliary agent and 30-50 parts of a solvent. Compared with the prior art, the steel wool of the prepared ultraviolet curing coating composition is excellent in wear resistance and has fingerprint resistance and hand sweat resistance; and the coating has high hardness, is suitable for surface protection of plastic base materials, has excellent comprehensive performance, and can be applied to the related fields of mobile phone plastic rear covers, mobile phone films and the like.

The invention provides ultraviolet curing paint, which comprises the following components in parts by weight: 15-40 parts of high-functional aliphatic polyurethane acrylic resin, 3-10 parts of bi-functional aliphatic polyurethane acrylic resin, 10-15 parts of high-functional acrylic monomer, 3-6 parts of single-functional acrylate monomer, 1-3 parts of adhesion promoter, 1-5 parts photoinitiator, 20-6- parts of diluent and 0.5-2 parts of auxiliaries. After the ultraviolet curing paint provided by the invention is coated, the hardness and the adhesion of an obtained paint film can be balanced, so that the obtained paint film has the advantages that the hardness reaches 5H under the condition of 1kg of load, the resistant times reaches 600 under steel wool, and the RCA wear testing times reach 2000, and has good surface adhesion on the surfaces of PC (Polycarbonate), ABS (Acrylonitrile Butadiene Styrene), PMMA (Polymethyl Methacrylate), PC/ABS and PA (Polyamide) materials.

A filtering device for the removal of arsenic from the ground water/surface water. The filtering device of the present invention uses steel wool and sand as the raw material for the removal of arsenic from water and the entire outer body of the device can be made from cheaper material like plastic material or stainless steel. The filtering device works on the simple principle of co-precipitation of arsenic with metals, followed by adsorption and filtration through treated sand. The metal, steel wool, used in the device is a processed waste generated from a steel plant thereby making the device extremely cheaper and versatile. In the filtering device of the present invention, iron arsenate and iron arsenite are co-precipitated by the reaction of steel wool with arsenic in water. The device uses treated river sand simultaneously for the removal of iron leached out during reaction.

The invention provides a steel wool-resistant high-hardness ultraviolet (UV) radiation cured coating, and preparation and using methods thereof. The coating comprises the following components in part by weight: 25 to 35 parts of six-functional group aliphatic series polyurethane acrylic resin, 25 to 35 parts of six-functional group silicon modified polyurethane acrylic resin, 5 to 10 parts of trimethylolpropane trimethacrylate, 1 to 2 parts of polyether modified polydimethylsiloxane, 1 to 2 parts of diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide, 2 to 6 parts of 1-hydroxycyclohexyl phenyl ketone, and 10 to 22 parts of solvent. The coating is prepared to overcome the defects in the conventional UV cured coating, and is particularly suitable for high-hardness coating which is required by plastic keys such as acrylonitrile-butadiene-styre (ABS) keys, poly carbonate (PC) keys and the like, and can widely applied to coating of various plastic parts of communication, computer and consumer (3C) products, and digital products; and the high requirement of the UV coating is met.

The present invention is recipe of brake disk material with metal sulfide. The brake disk material consists of adhesive of phenolic resin, butyronitrile modified phenolic resin, silicon modified phenolic resin or their composition 5-10 wt%; reinforcing material of steel wool fiber, aramid fiber pulp or composition of ceramic fiber and aramid fiber pulp 20-30 wt%; grinding material of ferric oxide, magnesia, alumina and friction powder composition 10-20 wt%; lubricant of inorganic lubricant and metal sulfide composition or organic lubricant and metal sulfide composition 15-25 wt%; and stuffing of barium sulfate, calcium carbonate and magnesia composition 30-50 wt%. The brake disk made of the material can form one layer of lubricating film in the friction interface without forming hard point and has greatly reduced low frequency noise.

The invention discloses a bamboo charcoal composite fiber friction material and a brake pad fabricated therefrom, and a method for preparing the same, wherein bamboo charcoal obtained from the bamboo wood through carbonization, grinding and sieving is dry-blended with organic plant fibers, and then wet-blended with a coupling agent, thereby obtaining the bamboo charcoal composite fiber friction material provided by the invention; the brake pad is fabricated from the bamboo charcoal composite fiber friction material provided by the invention, mineral fibers, resins, blanc fixe, chemigum, alumium oxide, graphite, glass fibers, steel wool and tire powder through stirring and mixing, hot press molding and curing heat treatment; the bamboo charcoal composite fiber friction material can be applied to fabricating various brake pads, especially suitable for fabricating the brake pads of the automobile braking system; and the bamboo charcoal composite fiber friction material has the advantages of low attrition rate, good heat fading resistance, long service life, low weight, wide raw material source and low cost.

The invention relates to a pollution-free tube-bundle separation-type permanent-magnet separating device being suitable for separating superfine magnetic particles, which comprises a permanent-magnet magnetic field and a separating room, wherein a plurality of separating tubes are installed inside the separating room, and magnetic conduction media such as threadlike steel wool or steel emery are installed at the outer side of each separating tube. An annular permanent magnet is fixed on a rotating shaft at the outer side of the separating room. A C-shaped permanent magnet is adopted to produce high magnetic density and gradient, the magnetic field is applied to the periphery of the tube bundle through the filled magnetic conduction substances, and the fluid is separated from the magnetic conduction substances through the separating tubes so as to prevent the fluid from corroding and polluting the steel wool and the like. The device has a simple structure, is convenient to operate, is suitable for separating the magnetic carrier or catalyst from the fluid, and is particularly suitable for separating the weak magnetic superfine particles in the fluid.

Antireflective films are described having a surface layer comprising a the reaction product of a polymerizable low refractive index composition comprising at least one free-radically polymerizable fluoropolymer 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.

The invention relates to an old treatment method of antique furniture. The method comprises the steps of: (1) treatment of a basal material; (2) sanding treatment; (3) ground color spraying; (4) color fixation; (5) sanding again; (6) cloth printing; (7) primer spraying again; (8) fading of the furniture surface color through wiping the treated furniture surface by steel wools; (9) sanding again; (10) spot spraying; and (11) finish paint spraying. The method has the following beneficial effects: the method uses a basal material treatment process for forming tearing traces on the furniture surface to embody an antique style, and uses multiple times of sanding and painting treatments for enabling the antique furniture to present the layered old feeling and to achieve a vivid effect; and in the treatment process, the surface paint of the antique furniture is not liable to fall through multiple times of painting treatments, so that the style is kept for a long time, the furniture quality is improved, and the furniture value is enhanced.

The invention relates to vehicle accessories, namely an automobile clutch disc and a brake block of low temperature carbonized and pre-oxidized wires and a production technique thereof. The friction material of the accessories is made from raw materials by weight percent as follows: 5 to 10 percent of low temperature carbonized and pre-oxidized wire, 15 to 18 percent of phenolic resin, 6 to 11 percent of rutile, 9 to 11 percent of chromite powder, 5 to 10 percent of manganese steel wool, 5 to 10 percent of aluminium oxide, 6 to 11 percent of red copper powder, 6 to 11 percent of wollastonite powder, 5 to 6 percent of feldspar powder, 6 to 11 percent of titanium dioxide, 8 to 13 percent of barium sulfate, 3 to 5 percent of quartz sand, 1 to 3 percent of graphite powder and 6 to 8 percent of graphite electrode powder. The production technology comprises steps of section-cutting of low temperature carbonized and pre-oxidized wire, material-mixing, ethanol-spraying, particle-producing, cold-model manufacturing, hot forming, hot processing and putting in a storage. The accessories have low cost and better mechanical property, friction performance and braking performance.

The invention discloses an oil-resistant anti-aging rubber cable material which is prepared from the raw materials including, by weight, 3-4 parts of vinyl phenyl silicone oil, 5-7 parts of chlorosulfonated polyethylene powder, 4-5 parts of sulfur, 2-3 parts of palm wax, 7-9 parts of steel wool fiber, 16-20 parts of fluoro-rubber, 12-14 parts of barite powder, 7-9 parts of carbon black, 2-3 parts of ascorbyl palmitate, 2-3 parts of emulsified methyl silicone oil, 0.5-1 part of triphenyl phosphate, 45-56 parts of styrene-butadiene rubber, 55-60 parts of chloroprene rubber, 55-70 parts of natural rubber, 30-40 parts of hollow glass micro beads, 3-5 parts of polytetrafluoroethylene, 1-1.3 parts of a silane coupling agent kh550, 12-16 parts of epoxy resin E44, 0.06-0.1 parts of diethylene triamine, 0.1-0.2 parts of an accelerator M, 2.6-3 parts of a silane coupling agent kh570, and a proper amount of distilled water. The cable material is excellent in mechanical performance, is not liable to cause circuit fault and is valuable to promote.

The invention discloses a plating coating system, and a metal piece product with an imitation ceramic effect. The plating coating system comprises a UV (Ultraviolet) primer, and a UV intermediate coatand a UV finishing coat coated on a coating layer, wherein the UV primer is prepared from the following components in parts by mass: 10 to 20 parts of bifunctional aliphatic polyurethane acrylic resin, 10 to 15 parts of trifunctional aliphatic polyurethane acrylic resin, 10 to 15 parts of six-functional aliphatic polyurethane acrylic resin, 10 to 15 parts of trifunctional acrylate monomer, 2 to 5parts of photoinitiator, 35 to 60 parts of diluent, and 0.01 to 0.5 part of accessory ingredient; the coating layer is made of one or two of titanium and silicon. The metal piece product with the imitation ceramic effect is good in appearance texture effect and good in adhesive force, and has effects on resisting water boiling and steel wool.

The invention discloses a yaw brake pad made of various materials. The yaw brake pad is composed of a steel back (1) and a friction layer (2), and the friction layer (2) is formed by sequentially arranging a heat-resistant layer (21), a friction-resistant layer (22) and a denoising protection layer (23) from inside to outside. The heat-resistant layer (21) contains boron-modified phenolic resin and vanadium trioxide, so that hardness, heat resistance and instant high temperature resistance of the friction layer are improved; the friction-resistant layer (22) contains steel wool fibers, quartz sand and potassium hexatitanate, so that friction coefficient and friction resistance of the friction layer are improved; the denoising protection layer (23) contains materials, large in nonmetal content, like flake graphite, molybdenum disulfide and antimony sulfide, so that the yaw brake pad is low in noise during working, and noise inside the yaw brake pad can be shielded. Friction performance, friction resistance and denoising effect of the yaw brake pad are obviously improved, service life of the yaw brake pad is longer than that of a common yaw brake pad, and the only defect of the yaw brake pad is that contact parts are worn slightly.