37results about How to "Good workability" patented technology

An insulated electric cable 10 has a core member 1 formed by stranding a plurality of core wires 4, each of the core wires 4 including a conductor 5 and an insulating layer 6 covering the conductor 5, an inner sheath 7 covering the core member 1, an outer sheath 8 covering the inner sheath 7, and a paper tape 2 disposed between the core member 1 and the inner sheath 7 in a state that it is wrapped around the core member 1, in which the outer sheath 8 is formed by a flame-retardant polyurethane resin, and a cross-sectional area of each of conductors 5 is within 0.18-3.0 mm².

Provided is a suction nozzle inspection device which can inspect the cleaning state of a suction nozzle after cleaning. The suction nozzle inspection device has a rotary device (20), a suction nozzle holding tray (40), a suction nozzle connecting part (51), a pump, a flow detection part and a cleaning state determination part, wherein the rotary device (20) enables a rotary table (30) to rotate by a specified angle, the suction nozzle holding tray (40) is detachably arranged on the rotary table (30) and is provided with plural suction nozzle holding parts (40f) for vertically holding the suction nozzle (500) at equal intervals at the periphery, the suction nozzle connecting part (51) is arranged to move vertically and is connected and communicated with a suction nozzle hole of the suction nozzle (500), the pump supplies air to the suction nozzle connecting part (51), the flow detection part detects the flow of air supplied to the suction nozzle from the suction nozzle connecting part via the pump, and the cleaning state determination part determines the cleaning state of the suction nozzle (500) based on the flow of air detected by the flow detection part.

Disclosed is a curable resin composition for surface protection capable of forming a protection film, which is environmental friendly while having good adhesion strength and can be easily removed in a film form in water without leaving any adhesive residue, on a member to be processed. Also disclosed are a photocurable adhesive using such a curable resin composition, a method for temporarily fixing a member, and a method for separating a protection film. Specifically disclosed is a curable resin composition for surface protection, which is characterized by containing a polyfunctional (meth)acrylate (A), a monofunctional (meth)acrylate (B), and a resin (C) having a cyclopentadiene skeleton. Also specifically disclosed is a curable resin composition for surface protection, which is characterized by containing a polyfunctional (meth)acrylate (A), a monofunctional (meth)acrylate (B), a resin (C) having a cyclopentadiene skeleton, and a photopolymerization initiator (D). Further specifically disclosed is a curable resin composition for surface protection, which is characterized by containing a polyfunctional (meth)acrylate (A), a monofunctional (meth)acrylate (B), a resin (C) having a cyclopentadiene skeleton, a photopolymerization initiator (D), and a polar organic solvent (E).

The invention relates to anti-crack concrete for a wharf surface layer and a preparation method for the anti-crack concrete for the wharf surface layer. The raw material of the anti-crack concrete for the wharf surface layer comprises the following components in weight ratio: 300-360kg/m<3> of binding material, 670-760kg/m<3> of fine aggregate, 1120-1210kg/m<3> of coarse aggregate, 3-5kg/m<3> of water reducing agent, 0.9-1.0kg/m<3> of polypropylene fibre and 145-165kg/m<3> of water. The anti-crack concrete for the wharf surface layer is good in working performance, is wide in concrete crushing strength (C25-C40) and is higher in crack resistance; plastic shrinkage shows that no cracks are generated; the shrinkage is small after the concrete is dried for 80 days; 20-day splitting tensile strength and 90-day splitting tensile strength are higher. Concrete cracks of the wharf surface layer can be effectively controlled by adopting the anti-crack concrete and a proper construction process, and thereby, the appearance, the strength and the durability of the wharf surface layer are ensured.

The present invention relates to a composite article obtained from binding or adhesion of particulate matter with a polyurethane binder which is derived from a urethane-modified isocyanate obtained by reaction of an isocyanate with a polyether polyol based on an initiator containing a tertiary nitrogen atom. Such composite articles can be, for example, recreational matting or tiles, sports or running tracks, or flooring, or laminates.

The invention provides an optical ultraviolet curable resin composition, a cured product and a display device, wherein the ultraviolet curable resin composition is a liquid resin composition and cured by irradiation with ultraviolet light; the heat resistance, the light resistance, and the moisture resistance, namely optically superior qualities are stably kept for a long time and the re-stripping property, the shock-resistance absorption and operation are excellent. The optical ultraviolet curable resin composition comprises (A) a polymer obtained by reacting polyether glycol (a-1) with alpha, beta unsaturated carbonyl compound (a-2) with function group reacted with the hydroxyl group; and (B) a photopolymerization initiator, wherein the functional group is preferably isocyanic acid ester or carboxyl group as the unsaturated carbonyl, preferably a (meth ) acryl. The resin composition is used for laminating at least two kinds of components selected from a component of the display device namely a display panel, a protection plate, and a laminar function part.

The invention relates to a concrete tackifying and water retaining agent. The concrete tackifying and water retaining agent is formed by polymerizing methyl ene butyl polyoxyethylene polyoxypropylene, unsaturated monocarboxylic acid or/and derivatives of unsaturated monocarboxylic acid, unsaturated alkenyl sulfonic acid or/and sodium salt of unsaturated alkenyl sulfonic acid and an unsaturated alkenyl organosilicone cross-linking agent. The invention further provides a preparation method of the concrete tackifying and water retaining agent. The concrete tackifying and water retaining agent can be applied to concrete with the grade of C30 or below, the tackifying and water retaining effect is excellent, the concrete fluidity loss is small, and high engineering application value is achieved.

The invention discloses a powdery accelerator for a calcium-containing aluminosilicate cementing material, composed of aluminum sulfate, sodium aluminate, lithium carbonate, amorphous silica and formaldehyde naphthalene sulfonate condensate, wherein the aluminum sulfate accounts for 45-65%, while the sodium aluminate accounts for 10-15%, lithium carbonate accounts for 3-7%, the amorphous silica accounts for 15-30% and the formaldehyde naphthalene sulfonate condensate accounts for 5-10%. Compared with the traditional powdery accelerator, the powdery accelerator provided by the invention has the advantage that the newly stirred slurry is high in viscosity, good in workability, low in disability in the spraying construction process, and good in adaptability to the cementing material with the compound accelerating mechanism.

This invention relates to a fine particle of polymer for a plastisol free from halogen atoms and having a specific surface area of 0.6 to 20.0 m²/g as determined by nitrogen-gas adsorption and a non-halogenated plastisol composition therefrom. This invention can provide a non-halogenated plastisol composition which does not generate toxic substances during incineration, is suitable as a coating material or sealant, and has a low viscosity, resulting in good workability and processability.

The invention discloses an ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and a preparation method thereof. The shotcrete disclosed by the invention comprises 267-370 kg/m<3> cement, 44-159 kg/m<3> ore powder, 0-140 kg/m<3> fly ash, 627-722 kg/m<3> stone, 855-962 kg/m<3> sand, 185-200 kg/m<3> water, 4.44-5.29 kg/m<3> high efficiency water reducing agent, 26.7-31.7 kg/m<3> alkali-free setting accelerator and 0-15.86 kg/m<3> shrinkage reducing agent. The shotcrete disclosed by the invention has the advantages of lower cost, lower shrinkage value, higher impermeability and favorable bonding property with rock; and the durability of the shotcrete as a permanent structural layer can be ensured.

A tray which is provided so as to be detachable from a support unit of an ink jet textile printing apparatus, and includes a main body having a setting surface on which a material to be printed is set; a positioning pin which is provided in a protruding manner on the mounting surface on the opposite side to the setting surface of the main body, and is used when mounting the main body on the support unit; and a leg portion which is provided in a protruding manner on the mounting surface of the main body, and has a protruding dimension which is longer than the positioning pin.

The invention provides a heat-conductive high-molecular-weight nylon powder composition which is characterized in that the powder composition is prepared through a polymerization reaction from raw materials comprising, by weight, 100 parts of lactam monomer, 1-50 parts of graphite, 0.005-1 part of an alkaline catalyst, 0.01-2 parts of an activator and 0.1-1 part of an anti-oxidant agent, wherein the lactam monomer is selected from one or more of caprolactam, decalactam and dodecalactam. The invention also provides a preparation method of the heat-conductive nylon powder composition and an application thereof. The molecular weight of the heat-conductive nylon powder can be adjusted in a range from 50000 to 1200000 and the particle size of the heat-conductive nylon powder can be controlled in a range from 20 to 100 microns with a uniform distribution. The powder can be used for 3D printing with stability of a product size being good and a thermal conductivity performance being high and can satisfy requirement of heat-conductive composite materials having high performance and complex structure in the technical fields of heat energy utilization, chemical heat exchange and the like.

The invention discloses recycled concrete, which is characterized by being prepared from the following raw materials in parts by weight: 150-180 parts of cement, 250-300 parts of modified recycled aggregate, 400-450 parts of fine river sand, 5-10 parts of attapulgite, 1-3 parts of porous beta-cyclodextrin cross-linked polymer nanofibers, 50-65 parts of blast furnace slag, 1-3 parts of mullite fibers, 2-5 parts of diazoalkyl urea, 4-8 parts of sulfonate-terminated hyperbranched waterborne polyurethane emulsion, 2-4 parts of additives and 75-90 parts of water. The recycled concrete is prepared from the following raw materials in parts by weight: 2-4 parts of carboxyl-terminated liquid fluororubber and 1-3 parts of water-soluble hyperbranched epoxy resin. The invention also discloses a preparation method of the recycled concrete. The recycled concrete disclosed by the invention is excellent in comprehensive performance, high in strength, low in water absorption rate, good in durability and workability and good in workability.

The invention belongs to the technical field of concrete, and provides high-strength high-permeability concrete and a preparation method thereof. The high-strength and high-permeability concrete is prepared from, by weight, 5-10 parts of water, 15-35 parts of cement, 50-75 parts of quartz sand, 1-3 parts of tetrabutyl titanate, 0.3-1.5 parts of boron fibers, 0.5-4.5 parts of molybdenum disulfide,1-5 parts of lithium-based bentonite, 0.06-0.15 part of a water reducer, 0.05-0.1 part of carbon black, 0.4-0.5 part of rosin, 0.3-0.8 part of an early strength agent, 1-1.5 parts of an air entrainingagent and 1.5-5 parts of tetraethoxysilane. The preparation method comprises the steps that firstly, the cement, the quartz sand, the lithium-based bentonite, the carbon black and the like are dry-mixed, the boron fibers are added, and water is added for stirring after uniform mixing; then, the molybdenum disulfide, the tetrabutyl titanate, the water reducer, the rosin, the early strength agent and the air entraining agent are added and mixed, and then the tetraethoxysilane, water and ethanol are added and stirred. Through the technical scheme, the problems of low compressive strength and lowbending strength of water-permeable concrete in the prior art are solved.

The present invention provides a screw driver, realising compaction of the case and proceeding deceleration and two stage speed change at the same time. A planetary gear frame (20) is between a second gear (17) and a clutch mechanism (22), the planetary gear frame (20) has a planetary gear revolving motion in the inner gear (19) around a rotary center of the output (18) of the second gear (17), in another aspect, the inner gear is set by rotating in the front case (5) and moving between the back position and the front position, in the back position, the inner gear (19) is clamped with the output (19) to directly connect the second gear (17) and the planetary gear frame (20), in the front position, the inner gear (19) is separated with the output (18), and clamped with the clamping part (30), to limit rotation, a gear shift button (33) is set in the front and the back for switching the inner gear on the front case.

The invention provides C30 concrete. One cubic meter of C30 concrete is prepared from the following raw materials: 304 to 315kg of P.O42.5R cement, 400 to 410kg of river sand, 400 to 410kg of machine-made sand, 200 to 210kg of recycled aggregate with the particle diameter being 5 to 10mm, 785 to 805kg of recycled aggregate with the particle diameter being 10 to 25mm, 82 to 88kg of tap water, 82 to 88kg of concrete stirring station recovery water, 51 to 57kg of S75 stage ore powder, 6.9 to 7.7kg of additives and 1.9 to 2.3kg of retarders; the fall highness of the C30 concrete is 200+/-20mm. The invention also provides a preparation method of the C30 concrete. In the C30 concrete provided by the invention, the content of the tap water and recovery water is respectively 50 percent; for the mixed recovery water, the ingredients of additives are regulated, so that the fall highness of the C30 concrete is 200+/-20mm; the quality effect identical to that of the concrete mixed by using pure tap water can be achieved; in addition, 50-percent recovery water is mixed in the C30 concrete; the C30 concrete workability is greatly changed; the use of the tap water is reduced; in addition, the recycled aggregate is obtained through crushing, processing and screening building garbage; the material cost is reduced; meanwhile, the ecological environment is effectively protected.

A cement admixture for concrete using a polycarboxylate based water reducing agent that can produce light concrete with little slump loss and good workability that prevents dragging and the like and having no material separation, and a cement composition using the cement admixture are provided.

A cement admixture for concrete using a polycarboxylate based water reducing agent, comprising bentonites (one or more selected from a group comprising bentonite, acidic white clay and active white clay are preferable) and polyvinyl alcohol, or the cement admixture further compounding saccharides. A cement composition, wherein cement, a polycarboxylate based water reducing agent, bentonites and polyvinyl alcohol are main components, or the cement composition, further compounding saccharides. Preferably, the cement composition, wherein the polycarboxylate based water reducing agent is 0.3 to 5 parts based on 100 parts of cement, bentonites are 0.1 to 10 parts, polyvinyl alcohol is 0.03 to 1 part and saccharides are 0.01 to 0.2 part.

Disclosed is a sealing material formed of a powdered material into which a rubber base sealing material with a viscosity of 20 to 200 Pa·s/100° C. is pulverized at a temperature lower than, or equal to, a brittle temperature of the rubber base sealing material, and a method of applying the sealing material, which includes applying the powdered material to a surface to be coated with the powdered material, by a spray coating process.

The invention discloses sprayed concrete and a preparation method thereof. The sprayed concrete includes cement, fine aggregate, glass fiber, fly ash, a water reducing agent, a water-retaining agent,nano SiO2 according to the ratio of 100:100-120:2.0-2.5:15-25:0.5-1.5:0.10-0.15:5-7. The preparation method includes: 1) according to the ratio, weighing the raw materials and water; 2) adding the water reducing agent and nano SiO2 to a part of water and performing ultrasonic vibration continuously to form a water solution; 3) blending and stirring the cement, the rest of water, the fine aggregate, and the fly ash to form mortar; 4) adding the glass fibers, the water-retaining agent and the water solution in step 2) to the mortar and uniformly stirring the components. The sprayed concrete is high in whole life strength, is not liable to crack and has good interfacial adhesion performance. The sprayed concrete can be applied to the fields of underground construction supporting, reinforcement of buildings, and protective engineering.

To provide a motorized valve with good operability and a refrigeration cycle system using said motorized valve. A motorized valve of a type that uses threaded coupling of a male threaded member and afemale threaded member to convert a rotational motion of a rotor into a linear motion, and causes a valve body that is housed within a valve main body to move in an axial direction with the guidance avalve body guiding member on the basis of this linear motion, while also canceling out a force that is due to a pressure difference between a plurality of interior spaces when the valve is in an openstate, said motorized valve comprising a valve seat on which the valve body is seated, and a plurality of communication passages by which the interior spaces are in communication with one another, wherein the effective cross-sectional area of a communication passage that is located in a location far from the valve seat is formed so as not to be smaller than the effective cross-sectional area of acommunication passage that is located in a location close to the valve seat.

A UV curable organopolysiloxane composition includes:

• • (A) a linear or branched organopolysiloxane having the following formula (1):

wherein R¹ and R² independently represent a monovalent hydrocarbon group, “a” is an integer of 1 to 3, and a chain line indicates a bond;

• • (B) a linear or branched organopolysiloxane represented by the following formula (2):

wherein R³ and R⁴ independently represent a monovalent hydrocarbon group, “a” is as defined above, and a chain line indicates a bond; and

• • (C) a photoinitiator.

The invention discloses a repairing and processing method for corrosion expansion type breakage of bridge member reinforcing bars. The repairing and processing method comprises the following steps of cleaning breakages, removing corrosion on the reinforcing bars, performing interface spraying, coating mortar, performing rough screeding, coating a film, and performing fine screeding. According to the repairing and processing method disclosed by the invention, the polymer mortar is adopted to process the corrosion expansion type breakage of the bridge member reinforcing bars, and a film coating method is adopted for the screeding operation, so that a good effect is achieved; the purpose of quickly repairing the breakage of the bridge is realized, the screeding effect of repairing a damaged surface is improved, and the generation of secondary breakage is reduced.

There is provided a curable composition comprising (A) a cyclic olefin; (B) a metathesis catalyst for polymerizing the cyclic olefin; (C) 0.1-30 wt. % of a compound comprising at least one vinyl group; and (D) 0.1-10 wt. % of a curing agent for compound (C), wherein the wt. % are relative to the total weight of the composition. The composition provides a desirable combination of workability, toughness and heat resistance. Also provided is a molded article comprising the composition and reinforcing fibers, and a method of manufacturing the same.

The invention relates to double-ingredient negative temperature fast repair mortar and preparation as well as preparation and application thereof, and belongs to the field of a concrete building. Thedouble-ingredient negative temperature fast repair mortar is prepared from the following raw materials in parts by mass: an ingredient A (40 to 60 parts of magnesia, 20 to 40 parts of borax, 2 to 4 parts of dihydric phosphate, 10 to 15 parts of flyash and 3 to 5 parts of kieselguhr) and an ingredient B (0.5 to 1 part of anti-freezing agents and 4 to 6 parts of water). According to the preparationmethod, the raw materials are subjected to ball milling and mixing; the ingredient A and the ingredient B are respectively prepared; in the use process, the ingredient A and the ingredient B are mixed; construction and hardening can be performed at a temperature being -20 DEG C or above. The double-ingredient negative temperature fast repair mortar can obtain higher pressure-resistant and folding-resistant intensity and shorter condensing time, and can be prepared and used under the negative temperature condition.

The invention discloses a wet-mixed mortar admixture. The wet-mixed mortar admixture comprises a plastic regulating agent and a coagulation regulating agent, wherein the plastic regulating agent is prepared from components as follows: 5%-15% of a water reducer, 0.5%-2% of a water retaining agent, 0.5%-1.5% of an additive, 0.1%-0.6% of a shrinkage reducing agent, 0.5%-3% of a thixotropic lubricant, 0.2%-0.4% of a cosolvent and the balance of water; the coagulation regulating agent is prepared from components as follows: 5%-15% of a retarder, 0.2%-2% of a plastic retaining agent, 1%-3% of a stabilizer and the balance of water. The wet-mixed mortar admixture comprises the plastic regulating agent and the coagulation regulating agent, mortar has good plastic retaining property and workability due to mixing of the double components, the opening time is greatly prolonged, and the compressive strength and the adhesion stress of the mortar are improved.

The invention provides a connector having a concave terminal embeded with a convex terminal which has a barrel portion. The barrel portion forms a box body taking the convex terminal as the bottom. Two terminals can be jointed and conducted by filling the soldering tin from the top side in the state of the embeded state of two terminals so as to improve the operation and reduce the poor conduction even in a librated apparatus and under the rigorous low temperature. The convex terminal has a holding portion constituted by the opposite protruding strip, which holds the convex terminal when the convex and concave terminal are embeded by inserting. A plurality of convex terminals are in a line in parallel on the shell and embeded with a plurality of convex terminals in a line at one side of the electrical device. The concavo-convex embeded connector used for an electric valve is easy and reliable to finish the embedding operation of the concave and convex terminals, reduce the production cost of the connector and improve the reliability.

A manufacturing method of an ultrafine wire including a conductor formed from a plurality of wire, the method comprising: twisting three wires into a twisted wires; and forming the conductor by compressing the twisted wires through a compressing hole of a compressing die after the twisting. A ratio of a cross section of the conductor after compressing to an area of the compressing hole is 80% to 83%.

A brake cover of an elevator hoist is provided, wherein the elevator hoist (1) has a motor (2) and a brake (3) for braking the motor, and the motor is arranged in the elevator pit at the bottom of the lift passage for driving its The sheave of the sling for raising and lowering the elevator car is wound on it, and the brake cover is mounted on the flange (2b) of the motor to cover the brake, wherein the brake cover has a lower cover (10a), a middle The plate (10b) and the upper cover (10c), the lower cover is fixed so that its end face and the side of the flange are closely together to cover the lower part of the motor, and the lower surface of the middle plate is in close contact with the upper surface of the lower cover Together, and its end faces are in close contact with the sides of the flange, the upper cover is fixed so that its lower surface is in close contact with the upper surface of the middle plate for covering the top of the brake.

The invention provides a high assisting cultivating system which can omit the operation with set operation performance poor which needs to carry out moving in and moving out along with the temperature drop at night, cold heating, air supply, etc., improve the operation performance and realize the strict tolerance of set temperature and set time. The whole system is compact and can reduce energy loss, thus providing good operation performance and economical result temperature management. The system comprises a plurality of seedling bed containers for containing culture soil, a support platform for loading the seedling bed containers, a first heat dissipation tube and a second heat dissipation tube arranged on the support platform; the seedlings can be planted in rows in the culture soil and the first heat dissipation tube is arranged between the rows with a plurality of seedlings and is close to the upside of the culture soil or in contact with the culture soil. The first heat dissipation tube and the second heat dissipation tube respectively comprise an inner tube and an outer tube which are coaxial and are horizontally arranged actually; after the space between the inner tube and the outer tube is vacuumed, working liquid is sealed inside the space. The second heat dissipation tube is coaxially held in a third tube which is provided with a plurality of openings on the tube wall.

A fire-resistant partition wall includes wall studs and first and second walls each including gypsum boards with vertical and lateral joints. The wall studs are on the back side of the vertical joints. A joint base member is provided at the lateral joints. The gypsum boards, the joint base member, and the wall studs are not screwed with a common screw, and (a) the gypsum boards are screwed to only the wall studs and are not screwed to the joint base member, and the joint base member is fixed to the lateral joint position by being inserted between the gypsum boards and the wall studs, or (b) the gypsum boards are screwed to the wall studs and to the joint base member with different screws, and the joint base member is fixed to the lateral joint position by being inserted between the gypsum boards and the wall studs.