137results about How to "Improves shrink resistance" patented technology

The invention discloses special repair mortar for a structure. The mortar is prepared from the following components in parts by weight: 350-500 parts of common silicate cement, 50-150 parts of sulphate aluminum cement, 100-200 parts of 20-40-mesh quartz sand, 300-350 parts of 41-70-mesh quartz sand, 20-50 parts of montmorillonite, 30-50 parts of a styrene-butadiene rubber latex, 1-10 parts of redispersible latex powder, 1-5 parts of starch ether, 1-5 parts of cellulose ether, 0.5-2 parts of a polycarboxylate superplasticizer, 1-3 parts of a retarder, 1-10 parts of fibers and 1-5 parts of a compound early strength agent. According to the special repair mortar for the structure, by selecting and proportioning the components in proportion, comprehensively excellent utilizing performance of the components, the components draw on strengths of each other and act jointly, so that the shrinking percentage of the mortar is low. Mechanical properties of relatively high bonding strength, tensileand crush resistances and the like are obtained, and the cost performance is high.

The invention provides a thermoplastic polyurethane composite foamed material and a preparation method thereof. The thermoplastic polyurethane composite foamed material is prepared from 10-25 parts of polyurethane, 35-45 parts of ethylene-vinyl acetate copolymers, 15-30 parts of polyolefin elastomers, 6-10 parts of polyethylene, 6-18 parts of ethylene propylene diene monomers, 6-15 parts of polybutadiene polymers, 3-5 parts of filler, 1.5-2.2 parts of zinc oxide, 0.4-0.6 parts of stearic acid, 0.8-1.4 parts of zinc stearate, 0.1-0.4 parts of a cross-linking agent, 0.7-1.0 part of a bridging agent and 2.5-3.5 parts of a foaming agent. The thermoplastic polyurethane composite foamed material is high in rebound resilience, resistant to compression and good in tear resistance. The preparation method of the thermoplastic polyurethane composite foamed material comprises steps as follows: 1) components except zinc oxide, the cross-linking agent, the bridging agent and the foaming agent are weighed; 2) all the components weighed in the step 1) are mixed; 3) the rest components are weighed; 4) the components weighed in the step 3) are added to a material obtained after mixing in the step 2) for mixing; 5) granulation is performed; 6) foaming is performed.

The invention discloses an inorganic nano particle hybridized polyolefin microporous membrane which includes an upper surface polyolefin layer and a lower surface polyolefin layer. At least one inorganic nano particle hybridizing layer is disposed between the upper surface polyolefin layer and the lower surface polyolefin layer in a laminated manner. The inorganic nano particle hybridizing layer is a mixed structure composed of an electrically-insulating inorganic nano particle and polyolefin, wherein the electrically-insulating inorganic nano particle is lipophilically modified through a modifying agent or a coupling agent. The microporous membrane is 5-40 [mu]m in a thickness, is 25-100 nm in an average pore size, is not more than 2.0 in a thermal shrinkage at 135 DEG C, is more than 145 MPa in an MD tensile strength and is more than 130 MPa in an TD tensile strength. The invention also discloses a method for preparing the microporous membrane. The microporous membrane has advantages of being capable of inhibiting thermal shrinkage, being high in tensile strength and being high in fusing temperature.

The invention relates to a preparation method of cation-type waterborne polyurethane wool anti-felting emulsion, and belongs to the field of wool fabric finishing auxiliaries. According to the preparation method of the cation-type waterborne polyurethane wool anti-felting emulsion, polyisocyanate is used as a hard segment, polyether polyol is used as a soft segment, an amine compound is used as a cation chain extender and sodium hydrogen sulfite or methyl ethyl ketoxime is used as an end-capping reagent; the adopted technical route is pre-polymerization reaction-hydrophilic chain extending reaction-end capping reaction-neutralization reaction-self-emulsifying reaction. The anti-felting emulsion synthesized by a self-emulsifying method has the characteristics of being excellent in storage stability, adjustable in solid content and convenient to use, the size change of wool knitting fabrics caused by felting during washing is remarkably reduced, the bursting strength, dyeing depth and dyeing fastness of the wool knitting fabrics are improved, and good application prospect is provided.

The invention provides a protecting mortar of the express highway roadbed surface hard-face terrace. The protecting mortar comprises the following components in parts by weight: 40-50 parts of ordinary silicate cement, 20-30 parts of quartz sand, 30-50 parts of carborundum, 2-4 parts of zeolite graft re-dispersible emulsion powder and 0.3-1 part of xanthan gum. The invention adopts zeolite graft re-dispersible emulsion powder; in the hydration process of silicate cement, the dense doping between anhydrite and crosslinked zeolite changes the lattice of cement so as to increase the wearability and antishrinking property of the express highway roadbed surface; the zeolite graft re-dispersible emulsion powder is crosslinked with xanthan gum to form composite polymer and the flexibility is increased to improve the anti-deforming force of the roadbed surface. The combined use of mortar and cement can increase the hardness, wear resistance, antishrinking property and anti-deforming force of the roadbed surface and prolong the service life of the highway.

The invention discloses a method for carrying out stone washing on a soft coarse-wooled fabric, aiming to providing a method for carrying out stone washing on a soft coarse-wooled fabric with a distressed, faded, clear and natural surface and less villi, wherein the fabric is high in resilience and soft in handfeel, the colors of the front and back surfaces of the fabric have a large contrast, and the fabric has a retro nostalgic feeling. The method is characterized by comprising the steps of carrying out mercerization on fibers, spinning yarns, spinning a fabric, carrying out curing and shrink-resistant treatment on the fabric, forming a garment, carrying out dyeing and stone washing on the garment, and drying and tidying up the garment. According to the method, through carrying out shrink-resistant treatment by two times in the earlier stage and carrying out stone washing by using vesuvianite into which proteases and a detergent are soaked, the defect that common wool fabrics have a serious milling phenomenon after being subjected to sand washing is successfully controlled, and excessive damage on fabrics in the process of doing old is effectively prevented, thereby prolonging the service life of garments.

The invention relates to a yarn spinning technology for multi-fiber semi-worsted melange yarn and the yarn prepared with the technology. The technological steps of the yarn mainly comprise raw material treatment, cotton carding, drawing, roving, spinning, self-spooling, doubling, two-for-one twisting and packaging of a finished product. Raw materials comprise mercerized wool fiber, nylon fiber, viscose fiber and cashmere wool fiber. The problems of high probability of water shrinkage and pilling of wool are solved with a more environment-friendly method, meanwhile, nylon, cashmere wool and viscose ingredients are added, and the heat retention property, the elasticity, the durability and the comfort degree of the product are increased; the production cost is lower, the prepared yarn has the characteristics of shrink resistance, good anti-pilling effect, natural luster, bright color, good elasticity, smooth hand feeling, heat retention and the like.

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 an antibacterial health-care fabric. The antibacterial health-care fabric is formed by interweaving warps and wefts, and is characterized in that the warps are jade fiber and chitin fiber blended yarns, the wefts are milk protein fiber and coconut carbon fiber blended yarns, the warps and the wefts are spun, woven and finished, and a natural antibacterial finishing agent is added to the finishing process. The antibacterial health-care fabric has not only the antibacterial, anti-inflammation, deodorant and ventilated effects but also the ultraviolet-proof and antistatic functions, is comfortable, soft and smooth in hand feeling, has the moisture absorbing and holding functions, panders to the environment-friendly, healthy and fashionable consumption concepts of people and is convenient to process.

The invention discloses high-ductility thermal insulation mortar. The high-ductility thermal insulation mortar is prepared from the following components in parts by weight: 20-100 parts of cement, 0-80 parts of a mineral admixture, 5-40 parts of high-strength microbeads, 0-35 parts of aggregate, 10-50 parts of an acrylate copolymer emulsion, 5-30 parts of water, 1-1.5 parts of a water reducer, and0.75-6 parts of fibers. An air entraining material or prefabricated bubbles do not need to be added, and the bubble content and dry density of the thermal insulation mortar are adjusted by adjustingthe rotating speed and stirring time of a stirrer; the prepared high-ductility thermal insulation mortar is small in dry density fluctuation amplitude, the high-strength microbeads are evenly distributed and do not float, the deviation of the actually-measured air content and the designed air content of the mixture is small, and the dispersion coefficient of the fibers is high; the mortar is highin ductility, high in deformation capacity, low in thermal conductivity coefficient, high in compressive strength and high in bonding strength with a base body; a preparation process is simple and convenient, and the raw materials are wide in source; and the high-ductility thermal insulation mortar disclosed by the invention can be applied to thermal insulation of wall bodies and roofs, thermal insulation of the surfaces of concrete dams in severe cold regions and the like.

The invention discloses an easily-degradable anti-shrinkage polypropylene master batch, wherein polypropylene serves as a base material, the types and the formula of the master batch are optimized, and a production process is improved. A complex antioxidant which contains a biologic antioxidant, modified nanocarbon which can obviously improve high temperature resistance, shrinkage resistance, relative tensile load, strength and toughness and elasticity modulus of the polypropylene master batch, calcium fruit fibers which can obviously improve shock resistance of the polypropylene master batch, are easily biodegradable and lower production cost, polyethylene/winter rye peptide complexes which can greatly improve low temperature resistance of the polypropylene master batch and bitter almond oil which can effectively improve lubricating property and oxidation resistance of the polypropylene master batch are scientifically compounded; the obtained compound has a synergistic effect with other processing aids; finally, the environment-friendly easily-degradable anti-shrinkage polypropylene master batch with good physical property is obtained.

The invention discloses polyaluminum chloride waste residue dry-mixed mortar and a preparation method thereof. The dry-mixed mortar comprises the following raw materials in parts by mass: 4-8 parts ofheat activated polyaluminum chloride waste residues, 23-25 parts of cement, 55-60 parts of sand, 4-6 parts of fly ash, 0.05-0.15 parts of a defoamer, 0.20-0.22 parts of a water reducing agent and a polymer emulsion accounting for 5%-9% of the total mass of the raw materials. The industrial waste polyaluminum chloride waste residues and fly ash are adopted to replace high-energy-consumption cementto prepare the cement mortar, mass stacking of the polyaluminum chloride waste residues can be reduced effectively, the use amount of high-energy-consumption cement can be reduced, and the social andeconomic benefits are good. The preparation method of the polyaluminum chloride waste residue dry-mixed mortar is simple, low in cost and beneficial to industrialized production and promotion, can significantly improve the resource utilization of polyaluminum chloride waste residues, and has important significance in reducing construction costs, reducing environmental pollution and the like.

The invention discloses jet concrete prepared from super absorbent resin and expanded vermiculite. The jet concrete is prepared from the following ingredients including cement, sand, stone, rock fiber, water, setting accelerating agents, super absorbent resin and expanded vermiculite. The super absorbent resin accounting for 0.3 to 0.5 percent of the mass of the cement and expanded vermiculite accounting for 1 to 5 percent of mass of aggregates are uniformly mixed into the jet concrete; an inner caring effect is achieved on the later period of the jet concrete; the condensation time of the jetconcrete can be obviously shortened; the pressure-resistant intensity and the anti-shrinkage performance can be improved; the rebounding rate is reduced; the green environment-friendly pollution-freeconstruction is realized; the jet concrete is particularly suitable for being used for construction such as culverts, bridges and underground engineering.

The invention discloses a fiber reinforced mortar for repairing ancient masonry. The fiber reinforced mortar consists of the following raw material components in percentage by mass: 50.2-54.4% of calcium hydroxide powder, 43-45% of water, 0.5-2.5% of plant fibers and 2.1-2.3% of glutinous rice flour, wherein the sum of mass percentages of the components is 100%. The invention also discloses a preparation method of the mortar. The preparation method comprises the following steps: weighing the raw materials, preparing glutinous rice pulp, preparing glutinous rice mortar, preparing the glutinousrice mortar into an experiment test piece, and carrying out curing. The mortar prepared by the method has obviously improved compressive strength and meets requirements of restoration of cultural relics and buildings.

The invention discloses a mining high-strength anti-shrinkage water plugging material and a preparation method; the mining high-strength anti-shrinkage water plugging material is composed of the following raw materials by mass: 3-10 parts of polyvinyl alcohol, 50-70 parts of sulphoaluminate cement, 5-20 parts of quartz powder, 3-15 parts of slag powder, 2-6 parts of gypsum powder, 2-5 parts of quicklime, 1-5 parts of a retarder, 1-3 parts of a cross-linking agent, 1-5 parts of a coagulant, and 1-5 parts of a stabilizer. The preparation method comprises the following steps: adding the polyvinylalcohol, sulphoaluminate cement, quartz powder, slag powder, gypsum powder and quick lime into a ball mill, grinding into particles with the average particle size of 2 mm, putting the particles, thecross-linking agent, the coagulant and the stabilizer into a stirrer, and uniformly stirring, thereby obtaining the high-strength shrinkage-resistant water plugging material for mining. According to the invention, the disadvantages of large shrinkage and low strength of the original inorganic material are effectively improved.

The invention relates to a dry-mixed wear-resistant floor mortar and a preparation method thereof. The dry-mixed wear-resistant floor mortar is prepared from the following raw materials in parts by weight: 80-100 parts of Portland cement, 10-20 parts of corundum, 10-20 parts of aluminum powder, 15-20 parts of nano bentonite, 5-8 parts of nano ceramic powder, 7-10 parts of modified nano calcium carbonate, 20-40 parts of rubber powder, 3-6 parts of methyl cellulose ether, 3-5 parts of polypropylene fiber, 10-12 parts of fly ash, 8-10 parts of gypsum, 1-3 parts of silicon defoaming agent and 1-3 parts of naphthalene sulfonate water reducing agent. The dry-mixed wear-resistant floor mortar has excellent wear resistance, impact resistance and bonding properties, and can reduce the ground dust and increase the oil resistance of the ground, thereby forming the high-density easy-to-clean anti-permeation ground, and avoiding the phenomena of whitening, sand fallout and the like of the mortar in the later period.

The invention discloses a high-strength high-temperature-resistant plastic product and a preparation method thereof, and belongs to the technical field of plastic products. According to the high-strength high-temperature-resistant plastic product and the preparation method thereof, various materials are successively mixed according to a certain ratio, and the obtained mixed solution is granulatedby an extruder and hot-pressed to obtain the plastic product. Mica powder and short glass fibers can be added in the preparation process of the plastic product to improve the thermal deformation temperature of the plastic product and make the plastic product not easy to soften when bearing higher temperature. Meanwhile, because of the addition of inorganic granules, the flame retardance, the heatresistance and the shrinkage resistance of the plastic product are improved, and the range of application of the plastic product can be expanded. In addition, in the process in which the mixed material is cooled to the room temperature after being heated, cooling grinding balls are added into the mixed material to reduce the heat of the mixed material, so that the time required for cooling the mixed material to the room temperature is shortened, and the preparation period of the plastic product is shortened.

The invention discloses an easy-to-clean soundproof automobile roof material which is prepared from, by weight, 25-30 parts of wool fiber, 4-5 parts of chitosan, 2-3 parts of titanium dioxide, 0.6-1 part of polyethylene glycol, 100-110 parts of waterborne polyurethane, 0.2-0.4 part of didodecyldimethylammonium bromide, 5-6 parts of clay, 6-7 parts of rock fiber, 3-4 parts of styrene-acrylic emulsion, 4-5 parts of polyacrylonitrile, 5-6 parts of nano zeolite molecular sieve and a proper amount of deionized water. A preparation method is simple, the material has high light resistance, antibacterial performance, soundproof performance and easiness in cleaning; serving as a novel automobile roof material, the problem that existing roof materials are difficult to clean and prone to smudginess is solved, and the material is worthy of popularization.