42results about How to "Avoid water swelling" patented technology

The invention relates to a seed germination control drought-resistant coating material, a coated seed and a preparation method thereof. The coating material mainly comprises an inner layer of the coating material (a water-retaining layer), an intermediate layer of the coating material (a buffer layer) and an outer layer of coating (water control layer). The water-retaining layer contains a water-retaining agent and can play functions of water storing and water retaining; on the one hand, the buffer layer can smoothen and round the surface of the water-retaining layer so as to wrap the water control layer, and on the other hand, the buffer layer can absorb a small amount of water which permeates the water control layer due to the water solubility; the water control layer cannot dissolve in water but can swell to control the pore sizes of water passing pore passages so as to control the water feeding. When the rainfall is small and cannot enable seeds to germinate into seedlings, a micro amount of water permeates the water control layer, then is absorbed by the buffer layer and the water-retaining layer but does not enter the seeds; when the rainfall is abundant, a large amount of water permeates the water control layer, at the moment, the buffer layer is completely corroded, the water-retaining agent absorbs water to rapidly expand so as to break the water control layer, so that the seeds start to absorb water to germinate and successfully grow into the seedlings under the action of the water-retaining agent.

The invention relates to the technical field of building materials and particularly relates to a baking-free pavement brick added with hydrophobic modified glass fibers. The pavement brick contains the following components: steel slag coarse aggregates, granite aggregates, cement, quartz sand, red mud, coal gangue powder, potassium feldspar powder, hydrophobic modified glass fibers, a sealing curing agent, a water reducing agent and water, wherein the hydrophobic modified glass fibers are glass fibers which are subjected to surface hydrophobic modification, the particle sizes of the steel slagcoarse aggregates are 2mm-4mm, the particle sizes of the granite aggregates are 1mm-2mm, and the fineness of quartz sand is 100-150 meshes; the cement is Portland cement, aluminate cement or magnesium oxychloride cement; and the water reducing agent is a polycarboxylic acid water reducing agent or a naphthalene water reducing agent. A manufacturing process of the pavement brick is energy-saving,environment-friendly and low in cost, and a brick body is high in rigidity and compression strength and unlikely to crack.

The invention relates to a method for freezing formation water in a gas drilling process. When formation water occurs in a gas drilling period, low-temperature gas that is condensed injected as a circulating medium into a well through a drill pipe and returns along with formation water and drill debris entering a shaft to a wellhead along an annulus when arriving at an outlet position; wherein the low-temperature gas returned up freezes the formation water dispersed in the annulus into particulate solid ice and carries it to the surface while freezing the well wall at the outlet position. The method enables a construction segment of gas drilling to be maximally extended, keeps efficient and safe drilling and high drilling speed and also prevents the problem of environmental pollution by waste water or waste mud caused in a foam drilling process.

The invention relates to the field of coating and discloses a water-resistant net-flavor waterborne ceramic simulating coating and a preparation method thereof. The coating comprises the following components in parts by mass: 10-20 parts of calcite powder, 10-20 parts of heavy calcium carbonate powder, 8-12 parts of calcium carbonate, 2-4 parts of bletilla striata powder, 1-3 parts of corn starch, 0.5-1.5 parts of carboxymethyl cellulose, 0.5-1.5 parts of phenoxy resin, 0.5-1.5 parts of glutaraldehyde, 1-3 parts of air purifying particles and 45-55 parts of water. The water-resistant net-flavor waterborne ceramic simulating coating provided by the invention has the advantages of relatively good water resistance, air purifying function, large adsorption capacity, long purifying time and good air purifying effect.

The invention provides a waterborne woodenware primer which is prepared from the following components in parts by weight: 20-30 parts of waterborne acrylic acid resin, 50-60 parts of waterborne core-shell structure self-crosslinking type polyurethane-acrylate resin, 0.1-0.2 part of hydroxyl and amino groups-contained organic amine and 3.8-5.6 parts of additive. For the waterborne woodenware primerprovided by the invention, through combination of three of first layer protection of rapid drying of the waterborne acrylic acid resin, second layer protection of waterborne core-shell structure self-crosslinking type polyurethane-acrylate resin and the hydroxyl and amino groups-contained organic amine, the tension swelling phenomenon occurring after a woodenware prepared from a wood, particularly a soft wood such as a poplar wood and a pine wood is sprayed with a coating for many times can be effectively improved.

The invention discloses a method for treating waste incineration fly ash, and belongs to the field of waste fly ash treatment. The method comprises the following steps: 1) mixing 500 parts of waste incineration fly ash, 5-10 parts of amino trimethylene phosphonic acid, 3-9 parts of ethylene diamine tetramethylene phosphonic acid sodium, 20-50 parts of calcium oxide with a particle size of less than or equal to 0.025 mm, 100-200 parts of sodium silicate, and 10-25 parts of sodium fluosilicate, and uniformly stirring the obtained mixture; 2) mixing acrylic acid, thiohydracrylic acid and water in a mass ratio of 1:1:50 so as to form an aqueous solution; and 3) adding the aqueous solution obtained in the step 2) into the mixture obtained in the step 1), mixing and stirring the obtained product so as to obtain waste incineration fly ash particles with a diameter of 0.5-2 mm, and drying the particles, wherein the mass ratio of the aqueous solution to the mixture is 7-9:10. According to the invention, the seepage of heavy metals in waste incineration fly ash can be effectively prevented, and the fly ash and concrete are firmly fixed in the process of concrete preparation, thereby achieving an effect that one object serves dual purposes, and an effect of energy conservation and environmental protection.

The invention discloses autoclaved aerated concrete, and relates to the technical field of autoclaved aerated concrete. The autoclaved aerated concrete comprises an outer surface layer, a connecting layer and a core layer; the outer surface layer is made of high-strength concrete, cellulose ether, redispersible polymer latex powder and an anti-cracking agent; the connecting layer is made of cement, quartz sand, ground calcium carbonate powder, redispersible polymer latex powder, cellulose ether and an anti-cracking agent; and the core layer is made of cement, fly ash, lime, gypsum, aluminum powder paste and waste slurry. The invention further provides a preparation method. The preparation method comprises the steps of preparing the outer surface layer concrete, the connecting layer concrete and the core layer concrete, then horizontally and uniformly filling the outer surface layer concrete, the connecting layer concrete and the core layer concrete into a mold, finally putting the moldinto an autoclave room for autoclaving and aerating, and demolding after curing. The autoclaved aerated concrete provided by the invention retains the good light weight, mechanical strength and frostresistance of traditional autoclaved aerated concrete, and also greatly improves the waterproof ability, so that the autoclaved aerated concrete has wider applicability.

The invention discloses a microorganism through-put oil extraction method for a heavy-oil reservoir with a high water content, and a heavy oil viscosity reduction method for the heavy-oil reservoir with the high water content, and a nutrition activator, and belongs to the technical field of oil field chemistry. The microorganism through-put oil extraction method for the heavy-oil reservoir with the high water content comprises the following steps of: 1) injecting a water shutoff agent into an oil well; 2) then, injecting the nutrition activator, or injecting exogenous bacteria and the nutrition activator, and soaking; and 3) after the soaking is finished, carrying out production. By use of the microorganism through-put oil extraction method disclosed by the invention, before the nutritionactivator is injected into the oil well or the exogenous bacteria and the nutrition activator are injected into the oil well, the water shutoff agent is injected into the oil well for water shutoff, the amount of the nutrition activator and the exogenous bacteria injected into a water level can be reduced, and the cost of the microorganism through-put oil extraction for the heavy-oil reservoir with the high water content can be greatly reduced.

The invention discloses a preparation method of a fast-dissolving gefitinib tablet pharmaceutical composition and belongs to the technical field of pharmaceutical preparations. The fast-dissolving gefitinib tablet pharmaceutical composition prepared by adopting the preparation method of the fast-dissolving gefitinib tablet pharmaceutical composition contains a gefitinib core and a film coating, wherein the film coating wraps the outer end of the gefitinib core, the outer surface of the gefitinib core is provided with a plurality of uniformly distributed hemispherical accommodating holes, expansion balls are inlaid and fixed in the hemispherical accommodating holes, the outer surfaces of the expansion ball are fixedly connected with a plurality of expanded and crack-guiding fibers, it can be achieved that an edible expansion agent is added in the gefitinib tablet, a large amount of gas is generated after acid-base chemical reaction in the presence of water, the fibers rapidly expand themselves and disintegrate to make the gefitinib tablet crack, the gefitinib tablet cooperates with a traditional disintegrating agent to make the gefitinib tablet rapidly crack into fine and small granular powder, the dissolution of gefitinib is promoted, accordingly the functional ingredients are rapidly absorbed by a patient, and a therapeutic effect is played.

The invention discloses water-based integrated ceiling finish paint compounded from various emulsions and a preparing method thereof. The water-based integrated ceiling finish paint compounded from various emulsions comprises, by weight, 42-48 parts of the hydroxyacrylic acid emulsion, 4.5-6.5 parts of the silicone acrylic emulsion, 25.5-26.5 parts of titanium dioxide slurry, 5-6.5 parts of waterborne polyurethane dispersoid, 0.25-0.35 part of a defoaming agent, 0.2-0.3 part of a pH regulator, 3.7-4.5 part of water-based amino resin, 0.75-0.85 part of a thickening agent, 0.06-0.08 part of a flatting agent and 28.04-6.02 part of water. The titanium dioxide slurry comprises, by weight, 25-26 parts of water, 0.2-0.3 part of a preservative, 0.02-0.04 part of a defoaming agent, 0.25-0.35 part of a wetting agent, 2.5-3.5 parts of a dispersing agent and 71-73 parts of titanium dioxide. The prepared water-based integrated ceiling finish paint is free of toxin and environmentally friendly, thewater-based performance and environmentally friendliness in the production process can be ensured when the water-based integrated ceiling finish paint is used for the finish of an integrated ceiling,and the protection environment of a workshop and the mental and physical health of production workers can be easily protected.

The invention discloses an auricularia auricular-purple perilla moon cake. Raw materials comprise the following components: auricularia auricular, wheat flour, moon cake stuffing, eggs, edible vegetable oil, honey, trehalose, honey, purple perilla, white sesame seeds and edible salt. The invention further provides a method for making the moon cake. The method comprises the following steps: (1) crushing auricularia auricular, purple perilla, white sesame seeds and black sesames by wall breaking; (2) dissolving trehalose with water; (3) adding eggs, edible vegetable oil and edible salt; (4) adding the auricularia auricula, performing uniform stirring, and then performing standing; (5) adding wheat flour, performing stirring and mixing, and kneading dough by a dough kneading machine to prepare a wrapper material; (6) preparing stuffing; (7) putting the prepared wrappers and stuffing into a forming machine; and (8) baking the moon cakes formed in the step (7). The auricularia auricular-purple perilla moon cake has the advantages that nutrient substances of auricularia auricular are reserved, nutrition collocation is balanced, absorption by human bodies is easier, and the moon cake is convenient to eat and carry and meets wider consumer groups.

The invention discloses a preparation process and preparation device of coffee black tea. The coffee black tea is prepared from the production raw materials of coffee, black tea, low-fat milk, Calpis,honey and jasmine incense honey. The production process comprises the following steps: the black tea is prepared, the coffee is prepared, and the coffee black tea is prepared, wherein black tea making comprises the steps: fresh leaf classification, spreading, withering, kneading, deblocking, fermentation, one-time drying and second-time drying, coffee making comprises the steps: raw material screening, washing, drying, rough grinding and fine grinding, and coffee black tea making comprises the steps: stirring and mixing, kneading, fermentation and drying. In a making process of the coffee, coffee beans are dried after being washed, and thus the quality guaranteeing time of the coffee beans is prolonged; microwave baking is adopted in a baking process of the black tea, and thus the loss oftea aroma of the black tea in the baking process is avoided; and the low-fat milk, the Calpis, the honey and the jasmine incense honey are added during mixing and stirring of the coffee and the blacktea, thus the nutritional content of the coffee black tea is increased, and absorption by human intestines is facilitated.

The invention provides an environment-friendly acidizing working solution suitable for a low-permeability carbonate reservoir. The environment-friendly acidizing working solution is prepared from thefollowing raw materials in parts by mass: 100 parts of water, 3 to 5 parts of glutamic acid N, N-diacetic acid, 3 to 5 parts of methyl glycine diacetic acid, 3 to 5 parts of methyl sulfonic acid, 5 to10 parts of acetic acid, 1 to 3 parts of potassium chloride and 1 to 3 parts of ammonium chloride. The invention further provides a preparation method of the environment-friendly acidizing working solution. The environment-friendly acidizing working solution provided by the invention is suitable for acidizing a carbonate rock water well, can effectively increase the permeability of a carbonate rock reservoir, has a good corrosion inhibition effect on a metal pipe, and is environment-friendly and easy to degrade.

The invention discloses a machine pressed plate and a processing method thereof. The surfaces of wood particles of the machine pressed plate are all bonded with glue; the specific processing method comprises the following steps of A, crushing waste wood to obtain a product (a); B, performing high-temperature cooking on the product (a) to obtain a product (b); C, drying the product (b) to obtain aproduct (c); D, heating and stirring the product (c) and the glue, and mixing uniformly to obtain a product (d), wherein the glue is prepared from the following raw materials in parts by weight: 20 to30 parts of phenolic resin glue, 10 to 20 parts of resorcinol, 5 to 15 parts of vinyl acetate, 2 to 10 parts of ethyl acetate, 5 to 15 parts of an emulsifying agent, 7 to 14 parts of an anti-aging agent, 4 to 8 parts of softening oil and 5 to 10 parts of a flame retardant; and E, pouring the product (d) into a mould, tiling, performing hot-pressing and forming to obtain a finished product. The machine pressed plate has the beneficial effects of good water resistance, oxidation resistance and fire resistance, good physical performance, wide application range, long service life, high processingefficiency, low cost and sustainable utilization.