63results about How to "High water resistance" patented technology

Provided are a connection structure for connecting corrugated synthetic resin pipes and a corrugated synthetic resin pipe used in the connection structure. The pipe is lightweight, low cost, and simply structured with a small number of components, having sufficient resistance to water and pressure, and excellent sealing performance without the use of robust material or requiring high precision, and capable of being easily connected and manufactured. A first corrugated synthetic resin pipe 1A is provided at an end 10 with a cylindrical insert end 3 formed by adhering a synthetic resin layer 5 to the outer surface of the end 10 so as to fill at least corrugated recesses a. A second corrugated synthetic resin pipe 1B is provided at an end 11 with a socket 4 formed by adhering synthetic resin to the outer surface of the end 11 and cylindrically extending the resin outwardly in the axial direction.

A multilayered fabric including a first base layer 1 including a polymer 2 exhibiting high temperature tolerance and water resistance, said the polymer being laminated with a cotton and/or polyester layer 3 adapted for comfortable contact with human skin, a second absorptive layer 4 including a moisture absorbent anti-fungal antibacterial layer including hemp and a third layer 5 including a decorative liquid permeable layer wherein said in which the multi-layered fabric is adapted for machine washing and drying.

The invention provides an environment-friendly and safe waterborne polyurethane adhesive for synthetic leather and a preparation method thereof. The polyurethane adhesive is prepared mainly from the raw materials such as polytetrahydrofuran glycol, dicyclohexylmethylmethane diisocyanate, phosphoric acid, dimethylolpropionic acid, trimethylolpropane polyoxypropylene polyoxyethylene ether, isophorone diamine and deionized water. In a using process of the waterborne polyurethane adhesive for synthetic leather, the volatilized gas is water vapor which is harmless to environment, thereby greatly reducing the cost for controlling environmental pollution. The waterborne polyurethane adhesive for synthetic leather is insensitive to the environmental factors such as acid, alkali and electrolyte, and avoids the phenomenon of emulsion breaking caused by adding various auxiliaries; meanwhile, by adding a proper amount of carboxylic chain extender into the formula, the obtained waterborne polyurethane adhesive for synthetic leather has excellent performance such as high strength, high wear resistance, yellowing resistance, aging resistance, low-temperature resistance, folding resistance and good permeability.

A nano-ink for digital ink-jet print is prepared through preparing POSS with double bond from organic siloxane by partial hydrolysis-sealing angle method, modifying and chemically modifying the surface of organic pigment by coupling agent, copolymerizing said POSS with the disperse pigment via free radicals, to obtain poss-disperse pigment, and preparing said nano-ink. It has high thermal and chemical stability and the resistance to water and soap.

A dehydroabietic acid polymer including a skeleton represented by following formula (A) as a repeating unit:

wherein, in formula (A), L represents a divalent organic group.

A high-performance waterborne wood coating is prepared from an organic silicon-acrylic emulsion and an additive. The additive comprises the following components by mass percentage: less than 5 percent of deionized water, 3 to 5 percent of film-forming additive, 0.1 to 1 percent of leveling agent, 0.1 to 0.5 percent of antifoaming agent, 0.1 to 0.2 percent of wetting agent, 0 to 0.1 percent of bactericide, 0 to 0.5 percent of thickener, and the balance of organic silicon-acrylic emulsion, wherein the organic silicon-acrylic emulsion is added with silica sol. The high-performance waterborne wood coating avoids the problems that most antifoaming agents have antifoaming and foam suppressing difficulties and that an excessive amount of the antifoaming agents leads to cavity shrinkage through the control of the addition amount of the antifoaming agent and improves the synthesis method of the emulsion. The organic silicon monomer and silica sol-containing high-performance waterborne wood coating emulsion with high solid content and low film forming temperature can reduce the film-forming temperature, be used for synthesis of low-viscosity and high-content waterborne wood coatings, improve the hardness of the waterborne wood coatings and improve the high-temperature resistance and after tack of the waterborne wood coatings.

There is provided a water vapor adsorbent for adsorption heat pumps that has high adsorption and desorption performance and high water resistance, such as submersion resistance. The water vapor adsorbent contains a zeolite that contains at least a silicon atom, an aluminum atom, and a phosphorus atom in its framework structure and that has a framework density of 12.0 T/1,000 cubic angstroms or more and 16.0 T/1,000 cubic angstroms or less, wherein the water vapor adsorbent contains a group 11 metal of the periodic table, which constitutes 0.1% to 15% by weight of the zeolite. In the zeolite containing the group 11 metal, an ion of the group 11 metal substitutes for a Bronsted acid site, which promotes a hydrolysis reaction of the zeolite, and decreases the number of Bronsted acid sites of the zeolite, thereby improving the water resistance, such as submersion resistance, of the zeolite.

Provided is a vinyl alcohol polymer that provides a coating film having superior water resistance and binder performances, and has sufficient solubility in water and viscosity stability even in a neutral pH region. Further provided are an aqueous solution, a coating agent, an ink jet recording material, a thermal recording material and a base paper for a release paper that comprise the vinyl alcohol polymer, and a method for producing same, and the like. The vinyl alcohol polymer includes a monomer unit represented by the following formula (1), with the following inequality (I) being satisfied. Preferably, the following inequalities (II) and (III) are further satisfied according to the PVA:

Provided is a highly versatile polymerizable composition that allows the fabrication equipment to be washed easily with water, allows the fabricated object to be removed easily from the support, and allows easy curing by application of light rays of 400 nm or higher, in optical 3D fabrication by lamination fabrication. A photopolymerizable composition for stereolithography containing a water-soluble radical polymerizable compound (A) represented by formula (1), a photopolymerization initiator (B) that generates radicals upon application of light rays of a wavelength of 400 nm or higher, and an ionic surfactant (C). In formula (1), R¹ is an organic group of valence a, a is an integer of 2 or higher, and R² is hydrogen or an alkyl having 1-6 carbon atoms.

The invention discloses a directly-heated electric water heater which comprises an insulation heating water pipe, a resistance wire, an insulation water outlet pipe and an insulation water inlet pipe, wherein the resistance wire is installed in the insulation heating water pipe; the two ends of the resistance wire are respectively connected with a live wire and a zero wire which are fixed in the live wire wiring opening and zero wire wiring opening at the two ends of the insulation heating water pipe; the insulation heating water pipe is provided with a water outlet close to one end of the zero wire wiring opening and provided with a water inlet close to one end of the live wire wiring opening; the insulation water inlet pipe is communicated with the water inlet; and the insulation water outlet pipe is communicated with the water outlet. The directly-heated electric water heater disclosed by the invention has the advantages of high heating speed, energy conservation and simple and safe structure.

An ink jet ink containing a coloring material and a polymer particle, wherein the polymer particle has a core portion and a shell portion, the shell portion contains a copolymer A having a unit derived from a compound (a1) represented by a general formula (1) of R₁—(C₂H₄O)_n—R₂ where R₁ is at least one selected from a vinyl group, an allyl group, an acryloyl group and a methacryloyl group, R₂ is a hydrogen atom or an alkyl group, and n is 30-100, and a unit derived from an α,β-unsaturated hydrophobic compound (a2), a proportion of the unit derived from the compound (a1) to the copolymer A is 50-90% by mass or less, a proportion of the unit derived from the compound (a2) to the copolymer A is 10-50% by mass or less, and the core portion contains a polymer of an α,β-unsaturated hydrophobic compound (b).

A method of applying an adhesive to a substrate is disclosed which utilizes a hydrophilic, high molecular weight, nonionic polyurethane adhesive. The polyurethane adhesive is soluble in water and a 1% by weight solution of the adhesive in water at 20% has a specific viscosity of at least 0.4. The nonionic polyurethane contains the following structural units:a) -O-(CH2-CH2O)n where n is 8 to 500;b) -CO-NH-X-NHCO- where X is an aliphatic or cycloaliphatic group;andc) -O-Y-O- wherein Y comprises a hydrophobic moiety from the groups(-CH2-CH(CH3)-O)m-CH2-CH(CH3)-,(-CH2 CH(C2H5)-O)m-CH2-CH(C2H5)-,(-CH2-CH2-CH2-CH2 O)m-CH2 CH2 CH2 CH2-,alkylene groups having from 2 to 44 carbon atoms, cycloalkylene groups having from 6 to 44 carbon atoms and mixtures thereof

The invention provides a modified redispersible emulsion powder. The modified redispersible emulsion powder is made by adding 1.5-2 parts of a coupling agent into 20-35 parts of a plasticizer, stirring at 100-200 r/min for 5-8 min, adding 0.3-1 part of a dispersant, and continuing stirring for 5-10 min; adding 35-55 parts of redispersible emulsion powder into a mixed solution, and stirring at 500-1000 r/min for 10-15 min; finally, adding 7-43.2 parts of an adsorbent into a horizontal stirrer, stirring slowly at 30-80 r/min, spraying a mixture evenly with a high-pressure spraying apparatus under 0.3-0.5 MPa into the stirrer, and stirring for 15-20 min to obtain the modified redispersible emulsion powder. The plasticizer is one or any of an epoxy ester plasticizer, a glycerol triacetate plasticizer, a polyol ester plasticizer, and a citrate plasticizer, and the coupling agent is a titanate coupling agent and/or a silane coupling agent. The modified redispersible emulsion powder can replace EVA (ethylene-vinyl acetate copolymer) powder and acrylic acid powder presently widely applicable in ceramic tiles and EPS\XPS plate adhesive mortar, can also be used with these powders and has the advantages of low addition, high adhesive strength and good water tolerance.

The present invention provides an ink jet liquid composition including chitosan and a non-volatile organic acid. The non-volatile organic acid preferably has two or more carboxyl groups and a cyclic structure other than an aromatic ring. Further, the invention provides an ink jet recording method of forming images on a recording medium surface by ejecting an ink and a liquid composition thereon so that the ink and the liquid are in contact with each other, wherein the ink contains a colorant, the liquid composition contains a component for coagulating the colorant, and the component for coagulating the colorant contains chitosan and a non-volatile organic acid.

The invention belongs to the technical field of bridge vibration control, and provides a pulley-heaving block device for inhibiting flutter of a large-span bridge, which is a vibration control system temporarily mounted on the bridge according to flutter control requirements and consists of a heaving block immersed in water, a rope for connecting a pulley block with the heaving block and an anchorage for providing downward tension. When the bridge vibrates upwards, due to the displacement amplification effect of the pulley block, the heaving block moves upwards in water at the speed multiple times that of the bridge, the gravity of the heaving block and the downward water resistance do negative work on the bridge, and vibration energy is consumed; when the bridge vibrates downwards, the heaving block and the bridge move approximately synchronously by optimizing design parameters, and large-amplitude flutter of the bridge is efficiently restrained. The reinforced concrete heaving block is more economical compared with a metal heaving plate, and due to the introduction of the pulley block, the total resistance borne by the bridge is multiple times of the gravity of the heaving block and the water resistance, so that the control efficiency is higher. The pulley-heaving block device has the advantages of being convenient to disassemble and assemble, economical, practical, safe and efficient.

The invention discloses styrene-butadiene redispersible emulsion powder and a preparation method thereof. The emulsion powder is prepared from the following components in parts by mass, 60-71.5% of carboxy styrene-butadiene latex, 1.2-1.6% of surfactant, 0.48-1% of polyvinyl pyrrolidone, 0.7-1.2% of carboxylic acid, 3.5-5% of polyvinyl alcohol, 0.05-0.1% of pH regulator, 0.2-0.4% of defoamer, 6-6.5% of anti-caking agent, and the balance of deionized water. The preparation method comprises the steps of adding the components in sequence, and adding the anti-caking agent while drying so as to prevent adhesion of the redispersible emulsion powder and effectively prevent the reduction of the performance of the redispersible emulsion powder due to spray drying. Through synergism and scientific compatibility of the components, the styrene-butadiene redispersible emulsion powder has a remarkable water reducing effect in cement mortar, adhesive strength between cement mortar and a base materialis improved, and the water resistance and flexibility of cement mortar are improved.

The invention discloses waterproof putty for a building inner wall. The waterproof putty is prepared from, by weight, 10-16 parts of polyving akohol, 12-20 parts of hydroxypropyl methyl cellulose, 90-103 parts of coarse whiting, 12-18 parts of paraffin, 8-13 parts of superfine silica powder, 10-16 parts of polyvinyl chloride, 18-24 parts of kaolin, 11-15 parts of talcum powder, 1.3-1.6 parts of higher alcohol fatty acid ester complex, 2.5-3.2 parts of kieselguhr, 1.8-2.2 parts of benzoic acid and 1.2-1.6 parts of lignin. The waterproof putty for the building inner wall is white, fine and high in waterproof intensity, has superior bonding strength, has no hollowing, peeling and crazing phenomena after being moistened, and is free of toxin, odorless and suitable for inner wall plaster, cement mortar, masonry, gypsum plates and other base materials.

The invention discloses a green energy-saving heat preservation material and a preparing method thereof. The preparing method includes the following steps that 1, the temperature in a reaction tank is adjusted to 80 DEG C-110 DEG C, 12-18 parts of kieselguhr, 7-15 parts of alumina silicate fibers, 2-6 parts of flyash, 5-10 parts of magnesium carbonate, 4-9 parts of sepiolite fibers, 2-6 parts of hydrogenated acrylonitrile butadiene rubber are added, and the components in the reaction tank are stirred evenly; 2, 6-12 parts of brominated maleic rosin epoxy resin, 4-10 parts of copal, 6-14 parts of polyacrylate emulsion and 2-6 parts of bagasse cellulose xanthate are added and stirred; 3, the mixed material obtained in the step 2 is transferred into a pressing mold, and the mold is pressurized to prepare the green energy-saving environment-friendly material. The heat preservation performance, fracture resistance and water resistance of the green energy-saving heat preservation material are improved, and the green energy-saving heat preservation material can be used for heat preservation of buildings, building materials and mechanical equipment.

An EL device is constructed of an insulating substrate, and a first electrode, a first insulating layer, a luminescent layer, a second insulating layer and a second electrode, which are laminated on the insulating substrate in this order. The insulating layer is made by a method other than ALE, for example, sputtering or vapor deposition. The second insulating layer includes alternating layers of Al.sub.2O.sub.3 and TiO.sub.2, which are formed by ALE. The second insulating layer covers the luminescent layer and an end surface of the first insulating layer. Since the first insulating layer is not formed by ALE, the device can be manufactured with high productivity, and there is no less of performance compared to a device having two ALE insulation layers.

The invention discloses an electricity leakage prevention structure, and relates to the field of electric appliance control. The electricity leakage prevention structure comprises a shell, an upper seal cover, an upper end cover, a lower seal cover, a lower end cover, a temperature sensor, an audible and visual alarm and a current detection chip. The shell is a stainless steel seamless pipe body;an anti-corrosion layer is arranged on the inner wall of the shell; an insulating layer and a thermal insulation layer are sequentially wrapped on the outer wall of the shell; and a 400 mm folded reciprocating flow channel formed by connecting 9 rubber hoses end to end in series in a communicating manner is further arranged in the shell, it is ensured that the water resistance is large enough, andtherefore environment electricity leakage is initiatively prevented. Because the upper end cover and the lower end cove can each be directly formed through injection molding and are then fastened andconnected through bolts, assembly is easy, the structure is compact, production and machining are easy, and the manufacture cost is low. The temperature can be detected in real time through the temperature sensor with a liquid crystal display screen and a waterproof probe. If the current detection chip detects the electricity leakage situation, a light-emitting rotating LED warning light of the audible and visual alarm can make alarm sounds, and the safety warning effect is achieved.

The present invention relates to a sewage processing process using a microbial carrier, and belongs to the technical field of sewage processing, and the sewage processing process comprises the following process steps: S1: sewage flows into a primary sedimentation tank for primary sedimentation to obtain primarily precipitated sewage; S2, the primarily precipitated sewage in the step S1 is filteredthrough a grid and then flows into a granulation sludge tank to be treated; S3, the sludge treated by the granulated sludge tank in the step S2 is discharged into a secondary sedimentation tank for secondary sedimentation; and S4, the sewage with qualified water quality indexes after sedimentation processing in the secondary sedimentation tank in the step S3 is discharged. The sewage processing process has higher incoming water high-low impact resistance and is not prone to sludge bulking.

The invention discloses a high-strength water-resistant breathable non-woven fabric which comprises a first non-woven fabric layer, a reinforced water-resistant breathable layer and a second non-woven fabric from top to bottom in sequence, wherein the reinforced water-resistant breathable layer is a glass fiber reinforced polyethylene film layer; a plurality of breathing holes are uniformly formed in the glass fiber reinforced polyethylene film layer. The high-strength water-resistant breathable non-woven fabric disclosed by the invention is simple in structure, reasonable in design, efficient in water resistance and relatively good in practicability; due to the structural design of a reinforced breathing layer, on one hand, the structural strength of the non-woven fabric is improved, and on the other hand, air flow can be circulated inside and outside the non-woven fabric.