136results about How to "High elastic recovery rate" patented technology

The invention relates to a production method of double-component spinneret outside composite parallel self-crimping elastic short fiber. The production method includes: adopting high molecular polymer components A and B different in shrinkage characteristics as raw materials; subjecting AB melt to outside compositing through a double-passage spinneret to obtain an AB parallel composite filament bundle; subjecting the AB parallel composite filament bundle sequentially to air-blowing cooling, oiling, winding traction and filament carrying to obtain AB parallel composite fiber protofilament; subjecting the AB parallel composite fiber protofilament sequentially to inter-cluster balance, drafting, thermal setting, oiling, crimping, loosening and drying and cutting to obtain the double-component spinneret outside composite parallel self-crimping elastic fiber. The fiber has excellent and lasting crimping performance, is high in elasticity, elastic recovery rate and spinnability, wide in application range and suitable for nonwoven filling.

The invention discloses high-strength super-toughness resin concrete which is composed of aggregate, packing and a sizing material. The high-strength super-toughness resin concrete is characterized in that the sizing material is composed of resin A and a curing agent B. The resin A is composed of epoxy resin, polyurethane prepolymer, polycarbonate and a functional agent. The weight percentage of the resin A and the curing agent B is 1:1-2:1, and the packing is inorganic powder. The aggregate is composed of super-fine sand, coarse sand and gravel. The epoxy resin is bisphenol A epoxy resin. The functional agent comprises accelerant, a water reducing agent, a defoaming agent and a coupling agent. The curing agent is long-chain aliphatic series anhydride. The high-strength super-toughness resin concrete has the advantages that strength is high and even, cracking and breaking do not happen, the deformation capability is good, the elasticity recovery rate is high, and the high-strength super-toughness resin concrete is not prone to permanent deformation at a high temperature.

The invention discloses a high-polymer modified water-emulsion asphalt-based waterproof paint and a preparation method thereof. The paint is prepared by taking high-concentration ultrafine suspension microemulsion anion modified emulsified asphalt, multiple synthetic high-molecular polymers such as cis-1,4-polybutadiene rubber, SBS rubber, epoxy resin and the like, and multiple functional agents as raw materials and mixing by employing a special production technology. When applied, the paint is subjected to mechanical spraying by employing a two-component spray gun, the demulsification coagulation is fast, and after a film is formed, the low-temperature work temperature reaches -30 DEG C and the high-temperature work temperature reaches 100 DEG C, and the elasticity recovery rate reaches 90% or more.

The invention discloses a subway station skin waterproof structure and a construction method thereof. The subway station skin waterproof structure comprises an outer wrapping waterproof layer distributed on the outer side of a constructed subway station body structure; the constructed subway station body structure includes a baseplate, a side wall, a top plate and a middle plate; the baseplate, the side wall, the middle plate and the top plate are all reinforced concrete structures cast by waterproof concrete; and the outer wrapping waterproof layer includes a top plate waterproof layer distributed above the top plate, a baseplate waterproof layer distributed below the baseplate, and a side wall waterproof layer distributed on the outer side of the side wall. Compared with the prior art, the construction method is simple in construction, high in efficiency and convenient to treat such waterproof weak detail links as a wall penetrating pipe and a water falling port of a subway station; and multiple defense lines consist of two types of waterproof structures, so that the bonding strength with the station structure body is high, the water flowing is prevented, no joint is generated, the skin type water prevention can be formed, and the waterproof effectiveness of the subway station is guaranteed.

The invention relates to a method for preparing a high-resilience low-draft differential melt-spun polyurethane filament. According to the preparation method provided by the invention, in the process of producing a thermoplastic polyurethane filament, the proportion of a cross-linking agent component is improved, oil yield of an oiling agent in the process of producing the thermoplastic polyurethane filament is improved and head shrinkage of the filament in the winding and forming process is improved; in the preparing process, no harmful solvent is used and no pollution gas is discharged; compared with a common thermoplastic polyurethane filament, the thermoplastic polyurethane filament prepared by the method has the characteristics of high single-filament strength, high elastic recovery rate, temperature resistance and easiness for backing-off.

The invention discloses a single-ingredient oxime removal type low-modulus room-temperature vulcanization neutral silicone weather-resistant sealant, which is prepared from the following ingredients in parts by weight: 160 to 240 parts of basic polymers, 30 to 80 parts of light calcium carbonate, 100 to 160 parts of heavy calcium carbonate, 7 to 12 parts of thixotropic agents, 12 to 30 parts of simethicone, 8 to 15 parts of chain expansion agents, 13 to 19 parts of crosslinking agents, 2.5 to 5 parts of coupling agents and 0.2 to 0.4 part of catalysts. The prepared single-ingredient oxime removal type low-modulus room-temperature vulcanization neutral silicone weather-resistant sealant has the advantages of low stretch modulus, high elasticity, high elasticity recovery rate, excellent weather resistance and good bonding performance; after the treatment such as cold pulling-hot pressing and water soaking, the interface bonding damage and cohesive failure cannot occur; the promotion of the high-displacement jointing of the silicone sealant in the super high-rise building and the concrete expansion joint sealing of facilities such as roads, bridges and airfield runway can be facilitated.

The invention discloses a high-elasticity-recovery-rate silicone elastic sealant for hollow glass and a preparation method of the silicone elastic sealant. The silicone elastic sealant is mainly used for secondary sealing of the hollow glass. The silicone elastic sealant is characterized by containing a component A and a component B, wherein the mass ratio of A to B is (15-18):1. The preparation process comprises the following steps that alpha,omega-dyhydroxyl polydimethylsiloxane, inorganic filler and dimethicone are stirred to be uniform in a high-speed planetary stirring mechanism, and the component A is obtained; the component B is prepared from dimethicone, inorganic filler, an organosilicone cross-linking agent, a silane coupling agent, dibutyltin dilaurate and a titanium complex. In the using process, the component A and the component B are mixed to be uniform at room temperature according to the mass ratio. The silicone elastic sealant has good strength, elasticity and adhesion and excellent aging resistance, the elasticity recovery rate of the silicone elastic sealant is as high as 96%, and the service life of the hollow glass sealant can be greatly prolonged.

Provided are a kind of lignin modified asphalt, a preparation method therefor and applications thereof. The modified asphalt is prepared after the following steps: first, lignin extraction is carried out; second, lignin refining is carried out; third, lignin modification is carried out; fourth, the modified lignin obtained from the third step and petroleum asphalt are placed in a reaction vessel, Na2S is added, the reaction is for 30min, and lignin modified asphalt is obtained after postprocessing. In the method, lignin is extracted from waste papermaking black liquid, asphalt is subjected to chemical modification by utilization of lignin after refining and modification, and lignin modified asphalt is obtained. The corrosion resistance of the modified asphalt is comparable to that of asphalt before modification, the elastic recovery rate of the modified asphalt is higher than that of asphalt before modification by 1.2%, the viscosity of the modified asphalt is higher than that of asphalt before modification at the same temperature, and therefore the performances of the modified asphalt is comparable to that of unmodified asphalt, so asphalt can be replaced by the lignin modified asphalt, not only petroleum resource is saved but also secondary utilization of waste papermaking black liquid is achieved.

The invention discloses a microorganism-pollution-resistant asphalt-base high-molecular water-emulsion waterproof paint. The paint is prepared by taking high-concentration ultrafine suspension microemulsion anion modified emulsified asphalt, multiple synthetic high-molecular polymers such as SBS rubber, chloroprene rubber, epoxy resin and the like, a composite anticorrosion mildew-resistant algicide and multiple functional agents as raw materials and mixing by employing a special production technology. Tests show that after a film is formed from the paint, no embrittlement happens at a low temperature of -25 DEG C, no flow happens at a high temperature of 120 DEG C, the elasticity recovery rate reaches up to 90%, and the mildew-resistant and algae-resistant degrees both reach first level.

The invention provides a high-strength and anti-stripping elastomer modified asphalt waterproof coiled material. The high-strength and anti-stripping elastomer modified asphalt waterproof coiled material comprises a base material taking a reinforced long fiber polyester base material as a main material and further comprises the following components in parts by weight: 60-70 parts of petroleum asphalt, 3-6 parts of nano-TiO2 powder, 6-9 parts of styrene-butadiene-styrene block copolymer (SBS), 1-5 parts of C9 petroleum resin, 2-5 parts of stabilizer, 2-6 parts of AMR anti-stripping agent and 15-20 parts of talcum powder. The high-strength and anti-stripping elastomer modified asphalt waterproof coiled material provided by the invention has the advantages of relatively high waterproof effect, high stripping strength of lap joints after hot melt construction, effect of being less prone to causing cracking of the lap joints, relatively high tensile capacity, relatively good low-temperature softness and high water impermeability.

The invention belongs to the technical field of textile engineering, and particularly relates to a manufacturing method of an elastic yarn. According to the manufacturing method, an elastic core fiberingeniously cooperates with drafting multiple, the elastic yarn has the advantages of high elasticity and low shrinkage, the shrinkage rate is 35% or below while the elongation is 40% or above, namely, the standards of high elasticity and low shrinkage are satisfied, and the defects of high shrinkage, low drafting and low shrinkage of the conventional high-elastic yarn are overcome. The elastic yarn is not limited to use as a weft yarn or a warp yarn; a fabric woven with the elastic yarn has a high elastic recovery rate, the latitudinal elastic recovery rate is between 55% and 85%, the latitudinal elastic elongation is 40% or above, the pilling level is 3.5-5, and the wrinkle recovery performance level is 4-5.

The invention discloses a textile filler formed by mixing corn fibers and polyester fibers, which is characterized in that the textile filler is formed by mixing conventional hollow polyester staple fibers and corn fibers, and the hollow polyester staple fiber has a fineness of 6. 67DTEX, a hollow degree of 10%, and a length of 38mm; the corn fiber has a fineness of 1.5 to 3.0 dtex, and is a crimped fiber with a length of 50 to 90mm, and the weight percentage of the hollow polyester staple fibers is 25% to 75%; and the weight percentage of the corn fiber is 25% to 75%. The invention also provides a preparation method of the textile filler formed by mixing the corn fibers and the polyester fibers. Various filler products prepared by the textile filler formed by mixing corn fibers and polyester fibers have the advantages of uniform and smooth appearance, lightweight sense, higher filling power, lasting elastic restoring force, excellent warmth and soft hand feel, and makes people feel comfortable, thereby improving sleep and quality of life.

The invention discloses an antibacterial protective environment-friendly composite polymer material and a preparation method and application thereof, wherein the composite polymer material comprises the following components by weight: 20 parts to 30 parts of benzyl quaternary ammonium salt, 50 parts to 75 parts of a biocompatible high-molecular polymer, 15 parts to 30 parts of modified nano metaloxide, 10 parts to 20 parts of nano metal particles, 30 parts to 40 parts of modified fiber, 25 parts to 45 parts of trisilanol ethyl ester silsesquioxane, 5 parts to 10 parts of a silane coupling agent, 3 parts to 5 parts of ammonium persulfate, 3 parts to 5 parts of dimethyl carbonate, 8 parts to 15 parts of 3-mercaptopropyl trimethoxy silane, and 2 parts to 3 parts of allyl glycidyl ether. Thematerial is capable of blocking and self-cleaning apatter or air with viruses, bacteria or microorganisms, is antibacterial, capable of killing viruses, capable of being repeatedly used, good in shrinkage resistance, high in elastic property and easy to degrade, and can be used for manufacturing window cloth, air conditioners, air purifiers, screen windows, clothes, trousers and masks.

The invention discloses a multi-component high-molecular polymer fiber sound-absorbing insulation material and a production method thereof. The sound-absorbing insulation material is a multi-layer mixture comprising superfine melt-blown fibers, various different linear densities artificial or natural three-dimensional crimp short fibers, low melting point short fibers, and a surface reinforced layer. The multi-component high-molecular polymer fiber sound-absorbing insulation material has excellent uniformity, permeability, tensile strength, elastic recovery rate, sound-absorbing and insulation efficiency, and environmental protection performance, and can be widely applied to the fields of noise reduction and insulating engineering in automobile, airplane, rail vehicle, steamship and other vehicles, building industry and other industries.

The invention relates to the technical field of underwear and knickers, in particular to comfortable hip lifting knickers. The comfortable hip lifting knickers comprise a front part and a rear part. A bottom crotch is arranged between the front part and the rear part. Hip lifting parts are symmetrically arranged on the rear part. Leg circumference parts are arranged at the lower end of the rear part. The surfaces of the leg circumference parts and the surfaces of the hip lifting parts are provided with hip lifting elastic glue layers. The hip lifting elastic glue layers are prepared from aliphatic diol, an aliphatic polyamine curing agent, a hydrophilic chain extender, aromatic isocyanate, a catalyst, rosin pentaerythrityl ester, a lactone compound, a silane coupling agent, antioxygen and a neutralizing agent. The comfortable hip lifting knickers have the advantages of being high in comfort, soft in hand feeling, good in hip lifting effect and good in breathability.

The invention relates to a copolyamide hot melt adhesive and a preparation method thereof, and especially relates to a copolyamide hot melt adhesive with a high elastic recovery rate and a high yieldstrength, and a preparation method thereof. Raw materials of the copolyamide hot melt adhesive comprise a main material and an auxiliary material, and the main material is composed of aliphatic lactam, aliphatic dicarboxylic acid, aliphatic diamine and polyether polyol; and a ratio of the aliphatic lactam to the aliphatic dicarboxylic acid to the sum of the moles of the aliphatic diamine and the polyether polyol is (0.8-1.3):1:(0.98-1), and a molar ratio of the aliphatic diamine to the polyether polyol is 1:(0.02-0.05). The introduction of an elastic aliphatic polyether segment reduces the steric hindrance of the movement of polymer molecules and provides a certain elasticity, so the copolyamide hot melt adhesive prepared in the invention has the advantages of good bonding effect, good elastic recovery rate and high yield strength.

The invention discloses a method for constructing a roof waterproof layer of a single-storey house. The method comprises the following steps: (1) cleaning a roof base layer; (2) conducting construction on an additional layer; (3) conducting construction on a leveling layer; (4) laying an insulation layer; (5) spraying a waterproof layer; (6) executing the step (4) for 2 to 3 times; (5) making a protective layer for the waterproof layer. Liquid rubber spray coating has good mechanical properties and anti-aging properties. Addition of anti-freeze additives can maintain excellent performance of the roof waterproof layer at low temperature, the sprayed waterproof layer has strong bond strength, tensile strength, high elastic recovery rate and excellent aging resistance, the spraying process has the advantages of convenient construction, high efficiency, rapid film formation and high construction efficiency, materials have a variety of protective properties, and the method is green technology without pollution and three-wastes discharge in the production and construction process.

The invention discloses a novel composite elastomeric yarn. The novel composite elastomeric yarn mainly comprises two groups of fiber fringings and a core filament; and the core filament is a composite elastic filament. The invention also discloses a textile fabric woven by using the composite elastomeric yarn, and a method and a device for manufacturing the novel composite elastomeric yarn. The novel composite elastomeric yarn has a smooth surface and few of hairs; fibers of the novel composite elastomeric yarn cannot drop easily; and the novel composite elastomeric yarn is high in yarn forming power and is wear-resistant. The textile fabric manufactured by using the novel composite elastomeric yarn has a smooth surface and few of hairs, is wear-resistant, is high in tension and tearing force and high in elastic recovery rate, and feels soft and smooth. The device is modified simply and conveniently, is high in applicability, easy to maintain and high in cost performance; a modified spinning frame not only can be used for spinning the novel composite elastomeric yarn, but also can be used for spinning the other traditional ring spinning yarns or the other traditional ring siro spinning yarns; flexible deployment can be carried out in production; and flexible and versatile market requirements can be feasibly met.

The invention discloses a preparation method for polyurethane chip for high-temperature-resistant fibers. The preparation method is characterized in that the polyurethane chip is prepared by reacting the mixture of newly-synthesized aliphatic/aromatic hybrid polyester polyol and polyether polyol, aliphatic diol and diisocyanate in a double-screw extruder. The polyurethane chip has the characteristics of high molecular weight and narrow molecular weight distribution. Melt-spun polyurethane fibers produced by using the polyurethane chip prepared by the preparation method disclosed by the invention approach to or exceed over spandex produced by using a dry spinning process in performance.

The invention relates to an environment-friendly high-polymer board with oil resistance and high temperature resistance performances. The environment-friendly high-polymer board consists of the following components as raw materials in parts by weight: 30-35 parts of waste residues of a power plant, 20-30 parts of asphalt, 35-45 parts of chlorinated polyvinyl chloride resin and the like. According to the environment-friendly high-polymer board disclosed by the invention, blast furnace steel slag, pulverized fuel ash, flue gas desulfurization gypsum and other industrial solid wastes and cement are taken as main raw materials and are blended with wollastonite powder and slaked lime, so that the environment-friendly high-polymer board not only has the capabilities of reducing the pollution of emission of the industrial solid wastes to the environment and realizing heat insulation and heat preservation, but also has economic and social benefits of changing wastes into valuables. The environment-friendly high-polymer board can be used for effectively overcoming the defects of low-temperature embrittleness, high temperature flowing and the like after film formation, and meanwhile, has the advantages of relatively high elastic recovery rate, good stability, long storage time, fire resistance, flame retardance and the like. Polyurethane elastomer added to the board has excellent wear resistance and oil resistance, belongs to a polar polymer which can be organically combined with polypropylene, and has the capability of effectively improving the mechanical property of a polypropylene cable material; added fluororubber has the properties of high temperature resistance, oil resistance and the like; added other filler has the capability of enhancing other physical properties and processability of cables.

The invention discloses an elastic yarn, and belongs to the technical field of textile engineering. The yarn comprises a group of elastic core fibers, a group of polyester staple fibers and a group ofstaple fibers coating on the outermost layer, the elastic core fibers and the polyester staple fibers are drafted and are output by a front roller with the staple fibers used for coating, twisting and winding are carried out to form the yarn with the polyester staple fibers and the elastic core fibers inside and other staple fibers outside. According to the invention, the polyester staple fiber roving is drafted and twisted with another staple fiber roving, and meanwhile, the elastic core fibers are fed, so that the elastic yarn which has the advantages of easy dyeing, excellent elasticity, abrasion resistance, pilling resistance, water washing resistance and water retention property is produced; the elastic yarn is used as a weft yarn, the warp yarn is not limited, the elastic recovery rate of a woven fabric is high, the elastic recovery rate of the weft is between 55-85%, the abrasion and pilling grade of the woven fabric is 3.5-5, and the wrinkle recovery performance grade is 4-5.

The invention discloses a hyperbranched structure-containing asphalt pavement joint sealant and a preparation method thereof. The joint sealant is prepared from, by weight, 44-52 parts of matrix asphalt, 5-9 parts of a hyperbranched monomer, 10-20 parts of an auxiliary additive, 1-7 parts of a viscosity reducer, 2-10 parts of a composite modifier and 12-18 parts of a filler. The preparation method comprises the following steps: heating the matrix asphalt to 130-150 DEG C, conveying the heated matrix asphalt to a stirring tank, adding the auxiliary additive, stirring the matrix asphalt and the auxiliary additive for 30 min, heating the obtained mixture to 150-170 DEG C, sending the heated mixture to a colloid mill, heating the mixture to 190 DEG C, adding the composite modifier, stirring the mixture and the composite modifier for 1 h, cooling the obtained material to 160-170 DEG C, adding the hyperbranched monomer, stirring the material and the hyperbranched monomer for 1 h, adding the filler and the viscosity reducer, and stirring all above materials for 1 h to obtain the joint sealant. The hyperbranched structure-containing asphalt pavement joint sealant has high elasticity recovery rate and excellent high and low temperature resistance, is suitable for asphalt pavement cracks under different climate conditions; and the preparation method has the advantages of simplicity, simplicity in operation, and suitableness for industrial application.

The invention discloses a pesticide storing container and a preparation method thereof. The pesticide storing container comprises an inner layer, a bonding layer I, a blocking layer, a bonding layer II and an outer layer which are sequentially bonded from inside to outside; and the inner layer is prepared from the following components in parts by weight: 10-20 parts of HDPE, 1-5 parts of a flexibilizer, 1-5 parts of a reinforcing agent, 2-6 parts of activated nano calcium carbonate, 3-6 parts of polypropylene, and 1-5 parts of butyronitrile rubber powder. The preparation method of the pesticide storing container comprises the steps: S1, melt extrusion is conducted; S2, blow molding is conducted; and S3, trimming treatment is conducted, specifically, a semi-finished blank product is trimmed, and a finished product is prepared. The pesticide storing container has the advantages of being high in strength, good in toughness and high in falling resistance; and additionally, the preparationmethod has the advantages that the prepared pesticide storing container is good in strength, good in toughness and high in falling resistance.