541results about How to "Low water resistance" patented technology

The present invention provides a reactive diluent composition which overcomes drawbacks of both the radical-cure and the cationic-cure reactive diluents and can be applied in a broad variety of uses such as paints, inks, adhesives, pressure sensitive adhesives, surface-modifiers, and molding materials; a curable resin composition containing the same; an activated energy ray-curable resin composition; and an activated energy ray-curable ink composition for ink-jet printing. A reactive diluent composition comprising a vinyl ether group-containing (meth)acrylic ester represented by the following general formula (1): CH2=CR<1>-COO-R<2>-O-CH=CH-R<3> (1) wherein R<1 >represents a hydrogen atom or a methyl group; R<2 >represents an organic residue of 2 to 20 carbon atoms; R<3 >represents a hydrogen atom or an organic residue of 1 to 11 carbon atoms and a hydroxyl group-containing polymerizable compound and/or divinyl ether.

A method of reducing computation of water tolerance by projecting touch data is disclosed, targeting the handheld devices. The method targets first at obtaining a difference array, followed by extracting minimum values of rows and columns of the difference array to obtain a row projection list and a column projection list respectively. By repeated implementing of mutual capacitance detection, ghost water blocks can be wiped out from the multiple water blocks. Once integrating with a local spatial boundary detection algorithm, the sensed signals of intended input located within a rectangular water block yet beyond a real water block are consequently detected. The computational algorithm of the water tolerance of this invention is successfully built into the touch panel controller due to its substantially reduced computation.

A solar powered watercraft including a pontoon section, a strut section, a deck section, and a solar canopy section is provided. The canopy section comprises a headliner layer, a ventilation space, and means for receiving solar radiation. The solar canopy may further comprise a means for flowing air through the ventilation space that includes a fan, a thermostatic switch, a photocell, air inlet ports, and air exhaust ports. The aft section of the pontoon, moreover, may possess a dual tapered design that reduces water friction and wake. The watercraft further includes means for containing a battery pack that, in turn, comprises means for removing heat and gaseous byproducts from the containing means. The containing means is either made integral with the pontoon or is attached to the pontoon's outer surface. The watercraft may possess an aft-oriented trim, which stabilizes the craft and reduces the effect of water forces.

A curable starch composition comprising a mixture of a starch and a curing agent having a functional group complementally reactive with at least one hydroxyl group contained in a starch molecule; and a modified starch having at least one substituent selected from the group consisting of a hydrocarbon group, acid group, blocked isocyanate group, isocyanate group, oxidative polymerizable group, radical polymerizable unsaturated group and amide group in a starch molecule.

The present invention provides a garment (1) for covering a wearer's thighs. The garment comprises a pair of front resistance elements (6) each of which, in use, extends obliquely across the front of a respective one of the wearer's thighs. It also comprises a pair of rear resistance elements (10) each of which, in use, extends obliquely across the rear of a respective one of the wearer's thighs. Each of the front and rear resistance elements extends from a respective upper position (7, 11) located proximal to the midline (8) of the garment to a respective lower position (9, 12) located distal from the midline of the garment. This provides a stabilising effect on the wearer's hip joint.

Waveguide or flow guide surfaces can improve the efficiency of fluid flow through tubes or over surfaces. When incorporated in a tube, the waveguides improve flow and function as sound absorbers making them useful in engine mufflers, firearm silencer/suppressors and jet engine exhaust attenuators. On surfaces, the waveguides can reduce fluid drag and find use on projectiles (e.g., bullets), airfoils for aircraft, and land borne vehicles. The waveguide array in either a tubular chamber or on a surface comprises a plurality of successive wave-like undulations inclined generally in the direction of flow and when employed in tubes extending inwardly to permit an unobstructed path for the fluid gas from entry to exit. The waves define annular wave cavities between their successive inwardly extending edges and the wall of the chamber with each cavity having a cavity mouth open to the unobstructed path. The waveguides are sized and spaced so that gas vortices are created within the cavities when gas flow occurs which vortices create a fluid boundary layer that assists the gas flow.

The present invention provides a positive electrode active material for a non-aqueous electrolyte-based secondary battery, composed of a lithium/nickel composite oxide with high capacity, low cost and excellent heat stability, an industrially suitable production method therefor, and a high safety non-aqueous electrolyte-based secondary battery. A lithium/nickel composite oxide is produced by the following steps (a) to (c): (a) Nickel hydroxide or nickel oxyhydroxide having a specified component is prepared at a temperature of 600 to 1100° C., under air atmosphere. (b) Fired powders are prepared after mixing said nickel oxide and a lithium compound, and then by firing at a maximal temperature range of 650 to 850° C., under oxygen atmosphere. (c) Obtained fired powders are washed with water within a time satisfying the following equation (2) and then filtered and dried.

A<B/40   (2)

wherein, A represents washing time represented by unit of minute; and B represents slurry concentration represented by unit of g/L).

A method is provided for forming high-appearance multi-layer coating films by sequentially providing an undercoating film with a water-based intermediate coat and a topcoat while controlling the imbibing or inversion at each interface between the respective coating films. The method comprises forming an intermediate coat using a water-based intermediate coating, a metallic base coat using a water-based metallic base coating and a clear coat using a clear coating in that order on a substrate provided with an electrodeposited coat wherein the water-based intermediate coating contains an aqueous dispersion of amide group-containing acrylic resin particles having a particle diameter of 0.01 to 1.0 mum as obtained by emulsion polymerization of an amide group-containing, ethylenically unsaturated monomer with another ethylenically unsaturated monomer or monomers or monomers.

The invention discloses a synthetic resin adhesive for an E0/E1 grade flakeboard, which is melamine modified urea-formaldehyde resin; formaldehyde with the concentration of 48 percent in mass percentage is adopted as a raw material; the adhesive comprises the following reaction materials in percentage by mass: 4.0 to 5.0 percent of melamine, 43.0 to 45.0 percent of urea, 48.0 to 51.0 percent of formaldehyde, 1.00 to 1.10 percent of addition agent, 0.20 to 0.22 percent of polyvinyl alcohol and proper acid and alkali; the total molar ratio is between 1.08 and 1.11; and the materials are reacted and synthesized, thereby preparing the adhesive. The high-concentration formaldehyde is adopted as the raw material; the adhesive has excellent bonding strength, proper curing time, good storage stability and the free formaldehyde content of between 0.06 and 0.08 percent; with the adhesive, the E1 and E0 flakeboard with excellent quality can be stably produced; and the adhesive has the advantages of low adhesive application amount, strong process adaptability, rapid curing, etc.

The present invention is directed to aqueous coating compositions, such as paints, containing a film-forming latex polymer and a reactive surfactant. The reactive surfactant, a polyglycerol ester or ether of an unsaturated fatty acid, reduces or eliminates the need for traditional water-soluble additives that lower the water resistance of the dry coating. Additionally, the reactive surfactants of the invention are capable of oxidative cross-linking during the curing process, forming a dry film that is more durable and water-resistant than traditional latex paint composition.

The invention provides a redundant controlled micro underwater robot and a fault diagnosis and fault-tolerant control method. A shell has a streamline shape spliced by a lower shell, an upper front shell and an upper back shell; an inclination compass cabin, a depth gauge, a battery tank, a Doppler speed meter, an electronic cabin, horizontal propeller impellers and a turning rise-sink control actuator are arranged inside the shell from the front to the back; and the depth gauge, the battery tank and the Doppler speed meter are arranged in parallel and positioned at the back of the inclination compass cabin together, the turning rise-sink control actuator is positioned in the middle of two horizontal propeller impellers, and the two horizontal propeller impellers and the turning rise-sink control actuator are arranged transversely in parallel and positioned at the tail of the underwater robot together. The robot and the method have the characteristics of high intellectualization degree, strong fault-tolerant capability, good safety, flexile motion, and convenient structural adjustment.

The invention relates to a metal super-hydrophobic surface and a preparation method thereof. The preparation method comprises following two steps: firstly, electroplating method is adopted, traditional Watts electroplate liquid is taken as a base electroplate liquid, conductive metal base materials such as stainless steel, copper, aluminium alloy, and magnesium aluminum alloy, are taken as a negative electrode, and copper sheets are taken as a positive electrode so as to prepare a nickel coating layer; and secondly, an obtained electroplated surface and an ethanol solution containing fluorosilane are delivered into a heating furnace for heat treatment, and an obtained sample is subjected to washing and blow drying so as to obtain the surface with super-hydrophobicity on metal workpieces. The preparation method of the metal super-hydrophobic surface is simple; cost is low; and the preparation method is convenient for industrialized application. Contact angle of the obtained metal super-hydrophobic surface is more than 155 DEG, and rolling angel is less than 10 DEG; the metal super-hydrophobic surface possesses excellent super hydrophobicity, self-cleaning performance, wear resistance, and corrosion resistance; the preparation method is suitable for obtaining the metal super-hydrophobic surfaces with super hydrophobicity, self-cleaning performance, wear resistance, and corrosion resistance on the surfaces of a plurality of metal base materials with complex shapes and large area.

The invention relates to the underwater robot, comprising a tapering body, parallel middle body, electric control body, horizontal sliding fin, vertical stable fin, and all kinds of drive devices, with the vertical stable fin fixed to the tapering body, floating device fixed to the tapering and parallel middle body, radio digital transmission station installed on the fixed bracket of the floating adjusting device, horizontal sliding fin fixed to the outside and parallel middle part, pitch angle adjustment device fixed to the front and middle part, electric control part connected wit the horizontal rolling angle adjustment device and elevation angle adjusting device, motor driver installed on the fixed rack, connected with the synchronic motor, front sensor installed inside it, and the emergency treatment device fixed on the bracket with the floating adjustment device. It can effectively improve the space, time density of the ocean, with low cost, and wide application.

The invention discloses fluorinated polyurethane and a preparation method thereof. The fluorinated polyurethane is prepared through the steps: fluoroalkyl-containing polyether glycol and diisocyanate perform addition polymerization reaction, a tin catalyst is utilized to catalyze, a chain extender is utilized to extend a chain, and an amino silane coupling agent is added to seal ends. A product contains a fluorine-containing polyether block, the fluorine content is high, fluoroalkyl on a polyether lateral group is prone to generating microphase separation and surface migration, polyurethane surface energy is low, and the fluorinated polyurethane is easy to store and cure as the silane coupling agent is utilized to seal the ends. A water contact angle of a coating prepared from the fluorinated polyurethane is higher than 110 degrees, and the coating has excellent water repellency.

The present invention aims to provide methods for surface-modifying a rubber vulcanizate or a thermoplastic elastomer, which can cost-effectively impart a variety of functions, such as sliding properties or biocompatibility, according to the application. The present invention relates to a method for surface-modifying an object of a rubber vulcanizate or a thermoplastic elastomer, the method including: step 1 of forming polymerization initiation points A on the surface of the object; and step 2 of radically polymerizing a non-functional monomer, starting from the polymerization initiation points A, to grow non-functional polymer chains, and further radically polymerizing a fluorine-containing functional monomer to grow fluorine-containing functional polymer chains.

The invention discloses an aqueous finish paint used for coiled material. For a present aqueous paint used for steel band, in the preparation of epoxy modified polyester resin in the paint, it becomes aqueous must after amine neutralization, thereby, the steel band coated by the paint has the disadvantage of poor coating film water resistance. The aqueous finish painting in the invention comprises the following components: water soluble saturated polyester resin 45-50%, pigment 25-35%, aqueous defoaming agent 0.2-0.5%, aqueous wetting and dispersing agent 0.5-0.8%, aqueous leveling agent 0.3-1.0%, ethers solvent 2-5%, water 5-10%, water soluble amino resin 5-8%baking vanish cooling catalyst 0.2-0.8%, delustering powder 0-1.0% and aqueous anti-scratch agent 0-0.1%. The invention realizes water solubility of polyester resin by dicarboxybenzenesulfonic acid sodium salt, does not need amine neutralization, and achieves coating film with good water resistance.

The present invention aims to provide a method for modifying a surface of a rubber vulcanizate or a thermoplastic elastomer, which can impart excellent sliding properties and excellent durability against repeated sliding motion, and allow the surface to maintain the sealing properties, without using expensive self-lubricating resins. The present invention relates to a method for modifying a surface of an object of a rubber vulcanizate or a thermoplastic elastomer, the method including: Step 1 of forming polymerization initiation points on the surface of the object; and Step 2 of radical-polymerizing a monomer starting from the polymerization initiation points to grow polymer chains on the surface of the object.

The present invention is directed to aqueous coating compositions, such as paints, containing a film-forming latex polymer and a reactive surfactant and/or a low VOC humectant. The reactive surfactant, a polyglycerol ester or ether of an unsaturated fatty acid, reduces or eliminates the need for traditional water-soluble additives that lower the water resistance of the dry coating. Additionally, the reactive surfactants of the invention are capable of oxidative cross-linking during the curing process, forming a dry film that is more durable and water-resistant than traditional latex paint composition. The low VOC humectant polyglycerol, isosorbide, or a derivative of isosorbide can replace at least in part traditional humectants such as propylene glycol which contribute to VOCs, while maintaining an effective open time for application of the aqueous coating compositions.

A trawl door for pelagic fishing comprises an accurately shaped main deflector portion (24, 25) provided with a leading edge lift enhancing structure constituted by a plurality of slats (20, 22) which form leading edge slats. At least the main deflector portion, as preferably also the slats are formed of plate metal for ease of construction. The preferred embodiment is a V-shaped trawl door made up of two sections (28, 29) of door.

An insulating tube leakage detecting method is a method for detecting the leakage of the insulating tube water channel with embedding earth comprising the wet earth. In the method a detecting instrument with an earth return is included, the detecting instrument is connected to the probe head comprising a water-contacting contact, the probe is arranged in the water channel of the insulating tube, and the invention is characterized in that the water leaking signal of the insulating pipeline is realized by the earth resistance variate of the probe head in the detecting tube. If the water channel of the insulating tube of an area does not have water linkage, then a comparatively stable hydroelectricity resistance value exists between the probe in the insulating pipeline of the area and the earth conducting pipeline, when water linkage occurs in the area the probe in the pipeline will form a returning conduction with shorter distance through the water leakage, therefore the earth resistance value of the probe is diminished correspondingly, and the magnitude of the electric quantity value can reflect whether the water leakage occurs in the area.

The invention provides a waterborne polyurethane dispersion body for a waterproof and moisture-permeable fabric coating and a preparation method and a usage thereof. The waterborne polyurethane dispersion body is capable of, through a special micromolecular chain extender, introducing strong hydrophilic hydroxyl lateral groups aggregated in clusters to a main chain, and through the strong hydrophilic hydroxyl lateral groups aggregated in clusters and a weak hydrophilic ether bond on a branched chain, a synergistic effect is formed, thereby being beneficial to one-way movement of moisture in fabric from inside to outside. A problem of mutual restriction between hydraulic pressure and moisture permeability is balanced, and the good waterproof and moisture-permeable property are acquired.

The invention discloses a synthetic resin cementing compound used for an EO-stage fiberboard. The synthetic resin cementing compound consists of melamine modified urea resin and a firming agent and is characterized in that the compositions of reaction material of the urea resin by weight percentage are: 4.0 to 6.0 percent of the melamine, 40.0 to 42.0 percent of urea, 52.0 to 56.0 percent of formaldehyde, and 0.4 to 0.6 percent of an accelerating agent; acid and alkali are appropriate and the total mol ratio is between 0.90 and 0.93; and the cementing compound is obtained by the systemization and reaction of the materials. The cementing compound has good cementation strength, appropriate curing time, and the content of 0.06 to 0.08 percent of free formaldehyde, etc. E1 and the E0-stage fiberboard with good quality can be produced stably and have the advantages of low glue feeding amount, strong adaptability to the hot press molding technology and high curing speed in the hot press molding process, etc., thereby meeting the need of the market on products of high environmental performance fiberboards.

The invention relates to an anode active material and a preparation method and application thereof. The anode active material includes: silicon oxide particles; and elemental silicon nanoparticles dispersed in the silicon oxide particles, wherein the median particle size of the monatomic silicon nanoparticles is 0.2-20 nm; the silicon oxide particles comprise lithium, the lithium in the silicon oxide particles comprises a lithium silicate compound, and the lithium silicate compound comprises one or more of Li2Si2O5, Li6Si2O7, Li2SiO3, Li8SiO6 and Li4SiO4. The anode active material disclosed bythe invention has the advantages of high capacity and coulombic efficiency, good multiplying power and cycle performance, the low expansion rate and the like when being used in a secondary battery. The preparation method is good in repeatability and high in safety. The secondary battery provided by the invention has the characteristics of high volume energy density, good rate capability, good cycling stability, low expansion rate and the like.

The present invention aims to provide a surface modification method for a rubber vulcanizate or a thermoplastic elastomer, which can impart excellent sliding properties and excellent durability against repeated sliding motion and can allow the surface to maintain the sealing properties, without using expensive self-lubricating plastics. The present invention relates to a surface modification method for modifying a rubber vulcanizate or a thermoplastic elastomer as an object to be modified, the method including: step 1 of forming polymerization initiation points on the object to be modified; step 2 of radically polymerizing a monomer, starting from the polymerization initiation points, by irradiation with LED light at 300 nm to 400 nm to grow polymer chains on a surface of the object to be modified; and step 3 of esterifying, transesterifying or amidating side chains of the polymer chains.