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143results about How to "Good anti-sag" patented technology

Mechanized construction plastering mortar and preparation method thereof

ActiveCN103043980AReduce porosityIncrease physical accumulationSlagMass ratio
The invention discloses mechanized construction plastering mortar and a preparation method thereof. The plastering mortar is formed by mixing powder, aggregate and water, and a mass ratio of the powder, the aggregate and the water is (200-300):(700-800):(160-250); the powder is formed by mixing portland cement clinker, plaster, granulated blast-furnace slag, coal ash, limestone powder and a chemical addition agent, and a mass ratio of the portland cement clinker, the plaster, the granulated blast-furnace slag, the coal ash, the limestone powder and the chemical addition agent is (100-300): (50-100): (50-200): (100-400): (100-400): (2-5). According to the invention, after the detection in a factory according to a quality requirement and the measuring packing, the powder and the aggregate are respectively sent to a construction site or a dedicated distributing bin for burdening, and the mechanized construction is performed; compared with dry-mixed mortar, the aggregate is not required to be dried, so that the drying cost and a part of transportation cost of the aggregate are reduced, and the material cost is substantially lowered; and simultaneously the advantages that the dry-mixed mortar quality can be controlled and the construction site environment is good are maintained.
Owner:郑州工大高新材料科技有限公司

Low-temperature repairing material for high-speed rail base concrete in severe cold region and application of low-temperature repairing material

ActiveCN106747133AGuarantee the construction qualityReduced operational timeFiberPolypropylene
The invention belongs to the technical field of construction materials, and particularly relates to a low-temperature repairing material for a high-speed rail base concrete in a severe cold region and application of the concrete low-temperature repairing material. The low-temperature repairing material comprises the following components: 425 ordinary Portland cement, 425 sulphoaluminate cement, 725 sulphoaluminate cement, a waterproof admixture, rubber powder, an aggregate, a water reducer, a construction improver, a water-retaining agent, an early strength agent, a nano multifunctional water repellent agent, and PP (polypropylene) fiber. The low-temperature repairing material for the high-speed rail base concrete in the severe cold region, provided by the invention, has a repairing construction time meeting a skylight time requirement of a high-speed rail, has compression strength after completion of hydration matching with that of the base concrete, is high in tensile bond strength with the base concrete, is slightly expanded and strong in anti-freezing circulation capability at -40 DEG C, can avoid secondary detachment, and well meets requirements on the low-temperature repairing material for the high-speed rail base concrete in the severe cold region.
Owner:郑州筑邦建材有限公司 +1

Fireproof type gypsum-based spraying material and preparation method thereof

The invention relates to the technical field of building materials and in particular relates to a fireproof type gypsum-based spraying material and a preparation method thereof. The fireproof type gypsum-based spraying material is prepared by grinding modified cellulose ether, a thixotropic lubricant, pearlite, a composite retarder, a flame retardant and a chlorine ion controlling agent until thegranularity is 0.6 to 1.0mm, and mixing powder with gypsum, sand and portland cement, so that the fireproof type gypsum-based spraying material provided by the invention has characteristics of convenience for working, water prevention and heat insulation, high temperature resistance, no hollowing, no cracking, strong binding power, good anti-sagging performance, bug and ant biting resistance, metal rusting prevention, greenness and environment protection and the like; furthermore, the flame retardant has the effect of keeping the average breaking strength of the gypsum-based spraying materialbeing 2.2MPa or more and the average compressive strength being 4.6MPa or more through a reasonable design and a dosage test of magnesium hydroxide, zinc borate and chitosan tetramethylene phosphine sulfate; the fireproof type gypsum-based spraying material keeps relatively good mechanical strength and also has the fireproof effect with the average fireproof degree of 560 DEG C or more.
Owner:深圳摩盾环保新材料有限公司

Preparation method of thickening water-retaining agent for building dry-mixed mortar and application thereof

The invention provides a preparation method of a thickening water-retaining agent for building dry-mixed mortar and an application thereof. The preparation method provided by the invention comprises the following steps of: (1) mixing a guar gum raw powder, a solvent and a surfactant to obtain a mixed solution; (2) adding a catalyst into the mixed solution obtained from Step(1), allowing nitrogen to enter, and carrying out an alkalization reaction at room temperature; (3) adding an etherifying agent for etherification while the pressure is 0.3-0.4 Mpa, the temperature is 40-90 DEG C but preferably 50-70 DEG C, and the etherification time is 2-5 hours but preferably 3-4 hours; (4) cooling to 25-40 DEG C, adding a neutralizer until the pH of the system is 6-8, and collecting the thickening water-retaining agent from the reaction product. The thickening water-retaining agent for building dry-mixed mortar is endowed with good water retention and working performance when applied in the building dry-mixed mortar. In addition, the price of the thickening water-retaining agent is obviously lower than that of cellulose ether. Thus, complete or part of replacement of cellulose ether by the thickening water-retaining agent makes the product formula cost to be obviously reduced.
Owner:SHANGHAI DONGSHENG NEW MATERIALS

Water-borne wood paint and preparation method of water-borne wood paint

The invention provides water-borne wood paint, which comprises the following ingredients in percentage by weight: 10 to 20 parts of deionized water, 1 to 5 parts of propylene glycol, 1 to 3 parts of base association type thickening agents, 0.05 to 0.5 parts of dimethylethanolamine, 0.01 to 0.5 parts of non-silicone mineral oil system defoaming agents, 0.05 to 0.3 parts of water-borne carboxymethyl cellulose, 0.2 to 1.2 parts of ethanol, 60 to 80 parts of water-borne nanometer core-case crylic acid polymer dispersoid, 3 to 10 parts of water-borne fluorine-containing polyurethane nanometer dispersoid, 1 to 5 parts of alcohol ester twelve coalescing agents, 0.01 to 0.05 parts of fluorine flatting agents and 0.1 to 0.3 parts of anticorrosive and bacterium prevention agents. The water-borne wood paint has the advantages that the water-borne fluorine-containing polyurethane nanometer dispersoid is used as the core technology and is organically combined with water-borne auxiliaries such as the fluorine flatting agents, the problem that the wood surface cannot be easily moistened by the water-borne wood paint because the water surface tension is strong is solved, and the problems of poor paint film adhesion force, poor boiled water resistance and the like of the ordinary water-borne wood paint are solved. The invention also provides a preparation method of the water-borne wood paint at the same time.
Owner:WENZHOU BANGXUAN TECH

Normal-temperature rapid-reaction non-cured rubber asphalt waterproof coating and application thereof

The invention belongs to the technical field of waterproof coatings, and provides a normal-temperature rapid-reaction non-cured rubber asphalt waterproof coating. The coating comprises a component A and a component B; the component A is composed of the following components: 2-10 parts of an isocyanate, 10-30 parts of polyether polyol, 1-5 parts of 3-(2,3-epoxypropoxy)propylmethyldiethoxysilane, 0.5-3 parts of boron nitride, 0.1-1 part of sorbitol, 20-40 parts of petroleum asphalt, 10-20 parts of tackifying resin, 10-20 parts of aromatic oil, 10-20 parts of a plasticizer and 1-5 parts of surfactant; and the component B is composed of the following components: 2-30 parts of amino-terminated polyether, 1-5 parts of an amino chain extender, 20-50 parts of petroleum asphalt, 20-50 parts of aromatic oil, 1-5 parts of a surfactant, 1.3-3.5 parts of polyethyleneimine, 0.1-0.5 part of a catalyst and 0.5-2 parts of nano kaolin. The mass ratio of the component A to the component B is (1-3):1 during application. During using, the component A and the component B are mixed, and then scraping coating or spraying coating construction is carried out by using the mixture. According to the technicalscheme, the problem that a non-cured rubber asphalt waterproof coating in the prior art has poor adhesion and low peeling strength to a substrate is solved.
Owner:HEBEI YUYANGZELI WATERPROOF MATERIAL

Construction process for large-area structure repair systems

The invention relates to a construction process for large-area structure repair systems, and the construction process comprises the following process steps: S1, treating a base layer of a wall body, ,specifically, chiseling off a loose part of the wall body, and cleaning the surface of the wall body; s2, performing interface treatment on the wall body, specifically, wetting the wall body, and coating the surface of the wall body with an interface agent to form an interface layer when the surface of the wall body is dry and the interior of the wall body is wet; s3, performing repairing treatment of the wall body, specifically, after the interface layer is dried, repairing and roughly leveling the wall body by adopting repairing mortar slurry to form a repairing layer; s4, performing plastering treatment of the wall, specifically, after the repairing layer is dried, plastering through plastering mortar slurry obtained by evenly mixing plastering mortar and water to form a plastering layer; and S5, performing plastering treatment of the wall body, specifically, after the plastering layer is dried, plastering through surface mortar slurry obtained by evenly mixing surface mortar and water to form a surface mortar layer. According to the invention, the large-area structure repair systems have the advantages of strong bonding strength and sagging resistance.
Owner:北京建工新型建材有限责任公司

Preparation method of single-ingredient sag-resistant polyurethane waterproof paint

The invention discloses a preparation method of single-ingredient sag-resistant polyurethane waterproof paint. The method comprises the following steps of (1) under inert gas protection, mixing dewatered polyether polyol and first isocyanate; performing reaction to obtain polyurethane prepolymers; (2) pre-mixing the polyurethane prepolymer with modified nanometer calcium carbonate, polyurea, modified nanometer gas phase silicon dioxide and filling materials which are respectively dewatered; then, adding the mixture into a first double-screw extrusion machine for mixing dispersion and extrusionto obtain a dispersed mixed material, wherein the polyurea is prepared from second isocyanate and diamine through reaction; (3) adding the dispersed mixed material into a second double-screw extrusion machine; sequentially adding solvents and auxiliary agents; performing mixed dispersion and extrusion to obtain the single-ingredient sag-resistance polyurethane waterproof paint. The vacuum pumpingis needed in step (2) and step (3). The problems of implosion, skinning, non-uniform dispersion and the like directly or indirectly caused by poor flowability in the prior art can be solved. The produced polyurethane waterproof paint can also have excellent sag resistance performance.
Owner:JIANGSU CANLON BUILDING MATERIALS
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