44results about How to "Good construction stability" patented technology

The invention relates to a high-performance flame-retardant double-component silane modified polyether sealant and a preparation method thereof, and belongs to the technical field of sealants. The silane modified polyether sealant comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by mass: 40-80% of MS polymer, 0-4% of dehydration agent, 0-4% of crosslinking agent, 10-50% of reinforcing filler and 0.1-2% of catalyst; and the component B comprises the following raw materials in percentage by mass: 30-60% of MS polymer, 8-30% of plasticizer, 0.2-3% of coupling agent, 1-10% of water and 20-60% of flame-retardant filler. Thus, the sealant has favorable mechanical property while achieving flame retardancy.

The invention relates to an anticorrosion paint primer composition. The anticorrosion paint primer composition comprises a component A and a component B. The component A comprises, by weight, 15-30 parts of hydroxy acrylic resin, 2-10 parts of polyaspartic acid resin, 10-50 parts of an antirust pigment, 0.5-3 parts of a coloring pigment, 5.5-23 parts of titanium dioxide, 0.1-2 parts of a dispersant as an assistant, 1-10 parts of a machine washing liquid as an assistant, 0.1-2 parts of an anti-settling agent as an assistant, 0.1-1 part of a leveling agent as an assistant, 1-10 parts of a solvent, and 10-30 parts of a filler. The component B comprises 5-30 parts of aliphatic polyisocyanate. The anticorrosion paint primer composition has a tridimensional net structure, has ultra-strong resistance to acid, alkali and salt chemical products by use of a carbamido group, has excellent ultraviolet resistance and outdoor performances by accurate control of a ratio of all the ingredients, solves the problem that carbamido paint construction is difficult, does not need special-purpose equipment, is suitable for routine construction and has excellent workability.

The invention relates to a sand-containing colorful environment-friendly coating and a preparation method of the same. The coating is composed of a pigment component, a dispersion medium and varnish; the pigment component includes RO water, cellulose, a dispersant, pigments and fillers, a defoamer, a film forming additive, an emulsion, an anti-freeze agent, an inorganic protective glue solution, a pH regulator, a sterilizing agent, a first thickener, and natural colorful sands; the dispersion medium includes RO water, the film forming additive, a rheological agent, the emulsion, an organic protective glue solution, the defoamer and a coupling agent; and the varnish includes RO water, the emulsion, the pH regulator, the sterilizing agent, the defoamer, the film forming additive, the anti-freeze agent, and a second thickener. Compared with the prior art, the sand-containing colorful environment-friendly coating has good storage and construction stability, wherein a dried film of the coating is excellent in adhesion force and water resistant performance. The coating, when being used, has a good rough sense and has clear layer sense, thereby representing a texture effect of natural stone materials better.

The invention provides a sulfoaluminate-Portland cement composite system additive and prepared sulfoaluminate-Portland cement-based fast-hardening early-strength concrete. The sulfoaluminate-Portland cement composite system additive is prepared from components in percentage by mass as follows: 70%-78% of a water reducing agent, 1.2%-2.5% of an early-strength agent, 18%-25% of a retarder and 2%-4% of an anti-freezing agent. The sulfoaluminate-Portland cement composite system additive can significantly improve the initial flow performance of the sulfoaluminate-Portland cement-based concrete, delay the setting time of a cement composite system, reduce the slump loss and effectively resolve the contradiction between liquidity and early strength and has composite effects of water reduction, delayed coagulation, early strength and the like, and a related preparation method is simple and suitable for popularization and application.

The invention provides a carboxyl modified graphene oxide modified rubber asphalt mixed material and a preparation method thereof. The carboxyl modified graphene oxide modified rubber asphalt mixed material comprises 5.34-10.23 parts of pavement petroleum asphalt, 0.42-1.21 parts of tyre rubber powder, 100 parts of a mineral stone material and 1-2 parts of carboxyl modified graphene oxide. The preparation method comprises the following steps of: (1) adding 0.42-1.21 parts of tyre rubber powder into 5.34-10.23 parts of pavement petroleum asphalt and stirring the mixture at a first temperature to obtain rubber asphalt; (2) heating 100 parts of mineral stone material to a second temperature, then adding 1-2 parts of carboxyl modified graphene oxide and stirring to obtain a mixed material; and (3) adding 6-11 parts of rubber asphalt in the mixed material and stirring e to obtain a product. The asphalt mixed material is prepared by combining a dry method and a wet method, so that the obtained asphalt mixed material has the characteristics of good stickiness, storage stability, high-temperature rut resistance, construction stability and etc.

The invention discloses a waterborne epoxy zinc-rich coating and a preparation method thereof. The waterborne epoxy zinc-rich coating comprises a component A and a component B, wherein the component Acomprises the following components in parts by mass: 1.5-8 parts of a water-based amine curing agent, 1-10 parts of a solvent, 0.3-1.3 parts of a molecular sieve, 0.3-1.5 parts of a coupling agent, 40-70 parts of zinc powder, 0.8-3 parts of a multifunctional improver, 0.2-3 parts of a lipophilic anti-settling agent and 0.1-1 part of a wetting dispersant; the component B is prepared from the following components in parts by mass: 15-25 parts of a waterborne epoxy resin emulsion, 0.1-1 part of a hydrophilic anti-settling agent and 0-10 parts of water; and the mass ratio of the component A to the component B is (2-4): 1. The waterborne epoxy zinc-rich coating has the characteristics of excellent storage stability, simple preparation method, water-based environmental protection, good construction performance and excellent corrosion resistance, and has a very wide application prospect.

The invention discloses jelly-paraffin-containing phase transition energy storage perlite and self-temperature-adjustment phase transition mortar which is a new building material and is applied to self-temperature-adjustment mortar. In the phase transition energy storage perlite, expanded pitchstone and expanded perlite are taken as a carrier for a shell, phase transition paraffin is taken as an energy storage material and exists in a jelly paraffin form, and an inorganic silica-alumina compound layer coats a core. The jelly phase transition perlite is taken as a temperature-adjustment energystorage/releasing material and is mixed with cement, opal shale powder, yellow sand and water at a ratio to prepare self-temperature-adjustment phase transition mortar. Jelly paraffin technology and opal shale powder are adopted to prevent the phenomenon that liquid paraffin exudes in a solid-liquid phase transition process of phase transition paraffin and to overcome the problem that phase transition mortar is complex in preparation technology. The enthalpy value of the self-temperature-adjustment phase transition mortar is more than 500 KJ/m<2>. The mortar is of an A fireproof grade, can beapplied to building interior walls, interior walls and grounds of vegetable greenhouses and livestock pens, and can be applied to fermenting tanks and aquatic product culture.

The invention discloses a recycled aggregate concrete constructability and durability improvement additive and belong to the technical field of building materials. The additive comprises lithium silicate, micro-silicon powder, a composite air-entraining agent, a thickened lubricant, a polycarboxylate superplasticizer and a retarder, wherein the ratio of the lithium silicate to a polycarboxylate superplasticizer mixed solution is 0.001:0.08; the ratio of a common air-entraining agent to a nano air-entraining agent is 0.1-5; and according to weight percents of all the additives in the mixed solution, the micro-silicon powder is 0.25-1.5, the composite air-entraining agent is 0.001-0.005, the thickened lubricant is 0.001-0.003, and the retarder is 0.001-0.05. The additive is applied to concrete engineering and can substantially improve concrete constructability, stability and durability. The additive is suitable for a reinforced concrete structure, a concrete structure and other structures. By use of the additive, the viscosity of concrete can be substantially lowered, and the flow velocity, expandability, crack resistance, constructability and working stability of the concrete are improved.

The invention discloses a shield tunnel prefabricated mid-partition mounting device. The shield tunnel prefabricated mid-partition mounting device comprises a main frame assembly, a mounting trolley assembly and a grabbing assembly, wherein one side of a mounting seat in the grabbing assembly is placed on a cylinder rod of a transverse adjusting oil cylinder; a connecting hinged support is arranged in the middle of the other side of the mounting seat; fine-adjustment hinged supports are separately arranged on the mounting seat and on two sides of the connecting hinged support; a rotary hydraulic motor mounting seat is fixedly hinged to the connecting hinged support; a rotary hydraulic motor is placed on the rotary hydraulic motor mounting seat; fine-adjustment oil cylinders are separately mounted on the fine-adjustment hinged supports on two sides of the connecting hinged support in a hinged manner; and the other ends of the fine-adjustment oil cylinders are fixedly hinged to the fine-adjustment hinged supports on two sides of the rotary hydraulic motor mounting seat. Various properties of a mechanical structure of the shield tunnel prefabricated mid-partition mounting device meet requirements of a construction site; and compared with a traditional construction mode, the shield tunnel prefabricated mid-partition mounting device has the advantages that the construction period can be greatly shortened, the construction stability is good, controllability of a construction process is high, the construction quality of a prefabricated mid-partition is improved effectively, and requirements on construction operation skills of workers are low.

The invention discloses a fully prestressed concrete solidly hammered picket-free square pile, relating to the field of construction and building materials. The fully prestressed concrete solidly hammered picket-free square pile comprises a pile body, wherein the pile body is wound with prestressed main reinforcements by virtue of a spiral stirrup, the spiral stirrup is bound and connected with the junction of the main reinforcements at intervals; the end part of the fully prestressed concrete solidly hammered picket-free square pile is provided with a reinforcing rib; and the fully prestressed concrete solidly hammered picket-free square pile is obtained by adopting one piece casting of concrete. The end part of the square pile is additionally provided with a reinforcing rib, a supporting layer can be easily reached when the pile is sunk, the completeness of the pile body and end resistance are high, and the vertical bearing capacity of a single pile is improved. Besides, the square pile adopts a solid picket-free concrete structure, the construction stability of the square pile is higher, and the structural and mechanical performances of the square pile can meet the design requirements, thus being beneficial to field operation.

The invention discloses a polyurethane foam material and a preparation method thereof, and the application of the polyurethane foam material in wound dressing, wherein the polyurethane foam material is particularly suitable for being used as a wound dressing, can be produced in a safe, simple and convenient mode and is high in biological safety. The preparation method of the polyurethane foam material comprises the following steps: 1) mechanically foaming waterborne polyurethane dispersion slurry to form foam slurry; 2) adding a thickener aqueous solution, preferably a sodium alginate aqueoussolution, into the foam slurry, and uniformly stirring to obtain viscous foam slurry; 3) coating a base material with the slurry to obtain a complex; 4) applying a calcium chloride aqueous solution tothe surface, coated with the slurry, of the complex; and 5) drying the composite material obtained in the step (4) to remove water so as to obtain the foam material with a foam cell structure and a compact surface.

The invention relates to a chemical industry product, in particular to a resinae paint. The resinae paint comprises the following components in percentage by weight: 15-50% of rosin, 20-30% of asphalt, 12-16% of epoxy resin, 5-10% of acrylonitrile, 3-6% of phthalate anhydride, 10-15% of tung oil, 5-8% of a secondary film forming material, 1-3% of phosphoric acid, 3-6% of zeolite powder, 5-10% of polyvinyl butyral, 3-5% of a defoaming agent, 1-3% of an emulsifying agent and the balance of a thinner, wherein the defoaming agent comprises the following raw materials in parts by weight: 40-85 parts of higher aliphatic alcohol, 5-15 parts of polyether siloxane, 5-10 parts of an emulsifying agent, 6-10 parts of a span series emulsifying agent, 8-22 parts of silicon dioxide and 100-500 parts of deionized water. The resinae paint is strong in hiding power, small in toxicity, less in solidifying agent using amount, good in pinhole resistance, and good in construction stability, can effectively inhibit generation of air bubbles with the defoaming agent, and is lower in requirements on construction environment.

The invention discloses a stiff skeleton structure for bridge closure. The stiff skeleton structure comprises a skeleton body and a locking device, wherein the skeleton body is composed of a pluralityof supporting structures, each supporting structure consists of a first transverse rod, a second transverse rod, a first longitudinal rod, a second longitudinal rod, an inclined rod, a first main inclined support and a second main inclined support; the locking device is arranged on the skeleton body, the locking device is used for being fixedly connected with the end part of a bridge closure section. The stiff skeleton is good in stress stability and high in reliability.

The invention discloses high-dosage rubber-plastic composite rubber powder modified asphalt. The high-dosage rubber-plastic composite rubber powder modified asphalt is mainly prepared from the following raw materials in parts by weight: 15-40 parts of rubber-plastic composite rubber powder and 100-200 parts of matrix asphalt, the rubber-plastic composite rubber powder is prepared from 70-90 partsof waste tire rubber powder and 10-30 parts of waste plastic through a double-screw extruder. Accordingly, a corresponding preparation method is established. Researches show that the high-dosage rubber-plastic composite rubber powder modified asphalt which takes high-mixing-amount rubber-plastic composite rubber powder as a main material and takes a small amount of materials as an auxiliary material has good high and low temperature performance, construction stability, elastic recovery performance and storage stability; the process is simple and easy to operate, and continuous large-scale production and preparation can be realized. In addition, the waste tire rubber powder and the waste plastics can be absorbed in large quantities by widely popularizing the method, and huge ecological andeconomic benefits are brought to the social environment.

The invention provides a cantilever scaffold and a construction process thereof. The cantilever scaffold comprises cantilever profile steel, a connecting piece and a scaffold body, the connecting piece is provided with a leveling assembly which telescopically moves relative to the cantilever profile steel, and the leveling assembly abuts against the cantilever profile steel; and a limiting column and/or a supporting seat are/is arranged on the upper part of the connecting piece and used for limiting and fixing a supporting frame body. According to the cantilever scaffold, by adjusting the direction of the connecting piece after installation, the assembling deviation of the cantilever profile steel is offset, and the requirement for the assembling precision of the cantilever profile steel is low; and meanwhile, follow-up assembling of the scaffold body is facilitated, and the construction speed and the construction safety are greatly improved.

The invention relates to a high-temperature primer for metro wheels and a preparation method of the high-temperature primer. The high-temperature primer for the metro wheels is prepared from epoxy modified organic silicon resin as a bonding base material, an anticorrosive pigment and filler, aluminum silver paste, an adjuvant, a solvent A as a paint component, low molecular weight modified polyamide resin, cashew oil phenol-modified aromatic amine resin, 4-6 of tris(dimethylamino methyl) phenol, an adhesion promoter (a silane coupling agent), and a solvent B as a curing agent component in a manner of matching with a proper amount of diluent during construction. The invention mainly aims at developing a high-temperature primer product for metro wheels, which has good overall performance, such as high-efficiency anti-corrosion property, excellent salt spray resistance property, high drying speed, strong adhesive force, good physical and mechanical properties, easiness of construction, good chemical resistance, good high-temperature resistance and the like.