501results about How to "Improve antifreeze effect" patented technology

The invention discloses an anti-freeze aerated concrete brick. The anti-freeze aerated concrete brick is prepared from the following raw materials in parts by weight: 35-40 parts of fly ash, 15-20 parts of cement, 15-20 parts of wollastonite powder, 5-10 parts of modified straw ash, 2-4 parts of gypsum, 0.05-0.1 part of aluminum powder, 2-4 parts of urea, 0.01-0.03 part of oxyparaffin soap, 1-2 parts of sugar calcium, 4-6 parts of calcium formate, 0.1-0.5 part of polyethylene wax powder, 4-6 parts of calcium carbonate, 0.2-0.4 part of calcium nitrate, 0.1-0.2 part of sodium acetate and right amount of water.

The invention relates to the field of building materials, and in particular relates to a concrete material for paving a road surface and a preparation method of the concrete material. The concrete material for paving the road surface comprises the following components, namely a gel material, aggregate and additives; the gel material consists of iron tailings, blast furnace slag, cement clinker and gypsum; the aggregate consists of waste rubber powder treated by NaOH, sand and pebbles; the additives comprise an air entraining agent, an early strength agent and a water reducing agent; and the waste rubber powder is neutral rubber powder which is a rubber powder suspension treated by using NaOH. The concrete material disclosed by the invention has the beneficial effects of achieving reasonable utilization of waste resources, effectively utilizing the iron tailing, waste rubber powder and other resources, solving the problem of treating the iron tailings, improving the performances, such as impact resistance, antifreezing property and anti-cracking property of concrete on the basis of saving the production cost, and prolonging the service life.

The application provides a starch adhesive. The starch adhesive is prepared from the following components in parts by weight: 50 to 150 parts of nanocellulose suspension, 50 to 150 parts of starch, 1to 10 parts of an oxidant, 20 to 80 parts of polyvinyl alcohol, 0.01 to 5 parts of a surfactant and 0.25 to 10 parts of a crosslinking agent. The starch adhesive has good properties including good waterproof performance, good storage stability, excellent initial adhesion, great adhesion, good flowability and good coagulation resistance. The application further provides a preparation method of thestarch adhesive. The preparation method comprises the following steps: (1) preparing the nanocellulose suspension, preparing a polyvinyl alcohol solution and preparing a dialdehyde starch solution; and (2) mixing the dialdehyde starch solution, the nanocellulose suspension, the polyvinyl alcohol solution and the crosslinking agent and stirring and reacting with certain pH value and temperature toprepare the starch adhesive. According to the method provided by the invention, starch and waste paper products are used as raw materials, aldehyde substances are not added in a reaction process and water is used as a solvent; and a production technology and a product have an environment-friendly property and all the raw materials can react sufficiently.

The invention relates to a super wear-resistant metal powder coating, and belongs to the technical field of coating materials. Aiming to solve the technical problems of poor wear resistance and low product hardness in the prior art, the invention provides the super wear-resistant metal powder coating which is mainly prepared from the following components by weight percent: 25 to 35 percent of polyester; 25 to 35 percent of epoxy resin; 0.5 to 1.5 percent of flatting agent; 0.5 to 1.5 percent of brightening agent; 5.0 to 15 percent of super wear-resistant additive; 1.0 to 3.0 percent of silver powder; 15 to 20 percent of coupling agent; and 5.0 to 10 percent of crosslinker. After being coated with the coating provided by the invention, the surfaces of products achieve high hardness which can be above 3H, and after rubbing against each other for thirty times, the surfaces of the products are not abraded, thereby having strong wear resistance; and the super wear-resistant metal powder coating has high stability and cohesiveness.

The invention relates to an antifreeze agent for diluting pig sperm, pertaining to the technical field of animal breeding. The antifreeze agent is prepared by N-acetyl-D-dextrosamine, hyaluronic acid, amido-sodium-lauryl sulfuric ester, glucose, trihydroxymethyl aminomethane, sodium citrate, sodium bicarbonate, potassium chloride, bactericide, distilled water and the like, wherein, the N-acetyl-D-dextrosamine can stimulate the emulsification function of the amido-sodium-lauryl sulfuric ester, enhances the protection function of the amido-sodium-lauryl sulfuric ester and yolk, the hyaluronic acid and the amido-sodium-lauryl sulfuric ester can effectively inhibit the damage rate of freezing and thawing sperm plasma membrane and DNA and improve the quality of freezing and thawing sperm, the glucose is the energy source for metabolism in vitro of the sperm, and the sodium citrate can maintain the osmotic pressure balance between diluted antifreeze agent environment and the internal environment of the sperm. The antifreeze agent for diluting pig sperm can effectively prolong the survival time of pig sperms for ultra-low temperature cryopreservation, and improve the liveliness of the freezing and thawing pig sperms, the integrity of plasma membrane and the integrity of acrosome.

The invention discloses a road asphalt pavement, comprising a powdery fine sand roadbed layer, wherein a leveling course is paved on the powdery fine sand roadbed layer, a gravel base coarse is paved on the leveling course, an efficient fireproof rubber layer is arranged on the gravel base coarse and is connected with a heat insulation layer, a steel fiber self-compaction concrete layer is paved on the heat insulation layer, an asphalt surface layer is paved on the steel fiber self-compaction concrete layer, a skid resistant course is smeared on the asphalt surface layer, and an antifreezing and waterproof berm is arranged at each of two sides of the powdery fine sand roadbed. The antifreezing and waterproof berm is arranged at each of the two sides of the roadbed, so that the stability, water resistance and antifreezing property of the roadbed are enhanced; and the steel fiber concrete composite material is adopted, so that the tensile strength, the bending resistance, the impact resistance and fatigue resistance of concrete are significantly improved, the concrete has relatively good ductility, and the quality of the roadbed is ensured; and asphalt is modified by virtue of reasonable proportions, and the obtained asphalt has the advantages of relatively low temperature sensitivity, relatively good high-temperature and low-temperature properties, aging resistance, long service life, stripping resistance and the like.

The invention belongs to the field of coating composition, in particular relates to a preparation method of an antimicrobial coating based on shell powder. The preparation method comprises the steps of performing desalination and degreasing treatment, drying treatment, high temperature puffing calcining treatment, cooling treatment and crushing treatment on shells firstly to obtain the shell powder; adding a drying adjuvant additive and a binder in the shell power, stirring and treating the shell power to obtain the antimicrobial coating. According to the preparation method, the natural shell power is adopted as a main raw material, so that the antimicrobial coating has an obvious antimicrobial effect, is safe and without toxicity, and is suitable for a various of trees; all raw materials are in reasonable proportion, the antimicrobial coating has a good antimicrobial effect, is harmless to a human body and the environment, and the harm of an existing antimicrobial coating to trees and the environment can be overcome.

The invention discloses a low-temperature early strength non-steam-cured concrete prefabricated member and a production method thereof. The low-temperature early strength non-steam-cured concrete prefabricated member comprises, by weight, 400-550 parts of Portland cement, 30-70 parts of wollastonite powder, 50-150 parts of slag powder, 800-1100 parts of crushed stone, 600-750 parts of medium sand,160-180 parts of water, 3.6-6.0 parts of an early strength water reducer, and 20-50 parts of a composite early strength agent; the composite early strength agent, the early strength water reducer, the Portland cement, the wollastonite powder and the slag powder are mixed at the low temperature of -5 DEG C to 10 DEG C to prepare the concrete prefabricated member free of steam curing at the low temperature; the production method is simple, the prefabricated member is suitable for the production of double-sided superposed concrete shear walls, prefabricated wall boards, prefabricated floor slags, prefabricated beams and other building materials, energy is saved, pollution is reduced, the production cycle is shortened, production efficiency is improved, and the prefabricated member and the production method thereof meet the need of building industry for sustainable development.

The invention discloses a self-friction heat generation type petroleum pipeline anti-freezing device, and belongs to the field of petroleum pipeline anti-freezing. External wind energy is used for driving a vertical shaft windmill and a magnetic adjusting plate to rotate; through continuous rotating of the magnetic adjusting plate, magnetic acting force between the magnetic adjusting plate and heat generating rings changes circularly and repeatedly, the pair of heat generating rings close to the magnetic adjusting plate are caused to move back and forth constantly, and meanwhile, because equivalent magnetic force exists between adjacent heat generating rings, magnetic force balance between the heat generating rings is broken due to the moving of one heat generating ring, other heat generating rings are caused to move, the purpose of friction movement of a plurality of heat generating rings being driven by one heat generating ring is realized, and a large amount of heat is generated bycontinuous friction between first and second friction rings and the heat generating rings; and moreover, friction heat is also generated in the heat generating rings in the moving process, heat is transferred to heat conducting liquid through heat generation in two forms of friction so as to increase the temperature of the heat conducting liquid, and spontaneous heat preservation and anti-freezingof a petroleum pipeline are realized.

The invention discloses tap water supply equipment with an anti-freezing function for severe cold areas. The tap water supply equipment comprises a water pipe and a connecting box, wherein the connecting box is cylindrical, the connecting box and the water pipe are coaxially arranged, and the inner diameter of the connecting box is larger than the outer diameter of the water pipe; assembling holesare formed in the two ends of the connecting box, the water pipe sequentially penetrates through the two assembling holes, and the water pipe and the inner walls of the assembling holes are sealed and fixedly connected; at least two anti-freezing mechanisms and at least two auxiliary mechanisms are arranged in the connecting box, wherein the anti-freezing mechanisms correspond to the auxiliary mechanisms in a one-to-one mode, and the anti-freezing mechanisms are evenly arranged in the circumferential direction with the axis of the water pipe as the center; and each anti-freezing mechanism comprises a power assembly, a rotating disc, a friction disc, two heat conduction rods and two heat conduction holes. According to the tap water supply equipment with the anti-freezing function for the severe cold areas, the anti-freezing function through the anti-freezing mechanisms can be achieved, and in addition, a snow removing function can be achieved through the auxiliary mechanism.