152results about How to "Improve bonding strength" patented technology

The invention discloses an efficient composite defoaming agent for oil well cement and a preparation method thereof. The defoaming agent is applied to the defoaming and foam inhibition of various admixtures containing cement paste for well cementation in the processes of high-speed shearing and mixing. The defoaming agent comprises the following components in percentage by mass: 15-59.5% of mineral oil, 40-84.5% of polyol fatty acid ester, 0-15% of polyacid fatty alcohol ester and 0.5-15% of a defoaming auxiliary component, wherein the defoaming auxiliary component contains one or two of polyether and tri-isobutyl phosphate. The preparation method of the defoaming agent comprises the following steps: under the condition of stirring at room temperature, sequentially adding the mineral oil, the polyol fatty acid ester, the polyacid fatty alcohol ester and the defoaming auxiliary component into a batching kettle; mixing for 0.5-2.0 hours; filtering the obtained mixture, and discharging the obtained object; and carrying out measurement packing on the obtained product. Compared with common defoaming agents for oil well cement, the defoaming agent disclosed by the invention is low in cost and simple in manufacturing process, products are uniform and stable, and the defoaming agent concurrently has the functions of defoaming and foam inhibition, and does not affect the rheological property and thickening property of cement paste and the compressive strength and the like of cement.

The present invention relates to a lid for an integrated circuit. According to one embodiment, an integrated circuit having a lid comprises a substrate having a flat surface and extending a first length and a lid having a recess and a foot portion. The lid generally has a second length shorter than the first length, and is positioned on the flat surface of the substrate. Finally, a bonding agent is positioned on the flat surface adjacent the foot portion of the lid. According to an alternate embodiment, a second component is positioned on the substrate outside the foot portion, and an adhesive seal is positioned on the substrate adjacent the foot and covering the component. A method of securing a lid to an integrated circuit is also disclosed.

The invention relates to a machining process for an artificial board, in particular to a method for producing a uniform-density bamboo shaving board. The invention is realized through the following technical scheme: the method for producing the uniform-density bamboo shaving board is characterized by sequentially comprising the following steps of: (1) selecting materials; (2) first screening; (3) first drying; (4) second screening; (5) second drying; (6) sizing; (7) hot-pressing; and (8) refrigerating. The uniform-density bamboo shaving board has the advantages of density uniformity, high dimensional stability and high static bending strength.

The invention discloses a concrete anti-bleeding inhibitor with a water reducing function and a preparation method thereof. The anti-bleeding inhibitor is mainly prepared by subjecting polyether largemonomer, unsaturated carboxylic acid, unsaturated amide, unsaturated sulfonic acid or sulfonate, a cross-linking agent, an oxidizing agent, a reducing agent, a chain transfer agent and deionized water to free radical polymerization at 15-30 DEG C through an aqueous solution, adding a sodium hydroxide solution to adjust a pH value and then supplementing water. According to the preparation method,production is conducted at normal temperature, no heat sources are needed, the equipment is simple, no pollution is generated, the production efficiency is high, and the anti-bleeding inhibitor can effectively solve the problems that existing polycarboxylic acid water reducers are poor in water retention and water absorption performance and workability, and bleeding and bottom holding are easy tooccur; the inhibitor has excellent thickening and water retention performance, and the degree of construction difficulty can be greatly reduced.

The invention discloses a wind prevention, sand fixation and water retention afforestation method and belongs to the technical field of environmental protection engineering. The method comprises steps as follows: a curing agent is prepared from sodium carboxymethylcellulose, anionic polyacrylamide, ferrous chloride and water; the curing agent and sand are blended to form cured sand; deep holes for tree planting and shallow trenches for grass planting are dug in the sand land, water collecting hoppers are drilled in the deep holes, the deep holes and the shallow trenches are filled with the cured sand, and the cured sand form deep hole sand fixation and water absorption layers in the deep holes and form shallow trench sand fixation and water absorption layers in the shallow trenches; saplings are planted in the deep holes, the roots of the saplings extend into the mouth parts of the water collecting hoppers, and grass seeds are scattered in the deep holes and the shallow trenches; the grass seeds are covered with a mulching film for maintenance, and small ventilation holes are formed in the mulching film. The curing agent and the sand soil are blended, inside gaps of soil particles can be filled with the blended curing agent and sand soil, the cured sand particles don't easily disperse and jump, sufficient water can be continuously provided for plants, and the long-time wind prevention, sand fixation and water retention effects are achieved.

The invention discloses a preparation method of a lithium battery negative pole material. The preparation method comprises the following steps: 1) preparing graphene nanoplatelets: stirring and mixing H2SO4 and (NH4)2S2O8, adding graphite powder after (NH4)2S2O8 is dissolved, further stirring, dropwisely adding H2O2, standing to obtain expanded graphene aggregate, washing with water to neutral, and drying; and adding the dried graphene aggregate into an N-methylpyrrolidone solution, pulverizing to obtain a graphene solution, centrifuging, washing with water, and freeze-drying to obtain graphene nanoplatelet powder; and 2) adding the graphene nanoplatelet powder prepared in the step 1) together with nano silicon powder, polyacrylonitrile and artificial graphite into a container containing dimethylformamide, performing ultrasonic dispersion, freeze-drying to obtain a graphene/nano silicon powder/polyacrylonitrile/artificial graphite mixture, calcining the mixture to obtain a graphene/nano silicon powder/cyclized polyacrylonitrile/artificial graphite compound, and crushing the compound to obtain the graphene/nano silicon powder/cyclized polyacrylonitrile/artificial graphite mixed negative pole material.

The invention relates to a fabrication method of an anti-corrosive and wear-resistant pipeline for delivering minerals. The method comprises the steps that a wear-resistant pipeline body is fabricated by centrifugal casting; quenching, high temperature tempering, solid solution strengthening heat treatment and a double tempering dispersion hardening heat treatment technology are performed; an outer wall of the pipeline is coated with a water glass nano composite coating subjected to test configuration; high temperature solidifying and then cooling are performed; a high-temperature-resistant, oxidized and anti-corrosive filming inner layer is obtained; and finally an inner wall of the pipeline is coated with a wear-resistant coating. The fabricated metal pipeline has higher hardness and wear-resistant property; the anti-corrosive outer coating of the pipeline has excellent water resistance, anti-fouling effect and high-temperature-resistant property; and the anti-corrosive inner coating of the pipeline has excellent wear-resistant property.

The invention discloses an antifouling antibacterial ceramic glaze, which is prepared from, by weight, 50-60 parts of basic glaze slurry, 7-9 parts of calcium oxide, 3-5 parts of calcium carbonate, 4-6 parts of aluminum hydroxide, 4-5 parts of an antibacterial agent, 5-7 parts of nano zinc oxide, 2-3 parts of sodium hexametaphosphate, 8-10 parts of a phosphoric acid aqueous solution and 2-3 partsof an yttrium nitrate aqueous solution. The invention further discloses a preparation method of the antifouling antibacterial ceramic glaze. By the adoption of the antifouling antibacterial ceramic glaze and the preparation method thereof, the antibacterial agent is added into basic glaze, the antibacterial agent can be uniformly distributed in the glaze, and sintered ceramic can continuously andslowly release silver ions in water, so that a continuous antibacterial effect is achieved; the phosphoric acid aqueous solution and the yttrium nitrate aqueous solution are adopted in the glaze, so that the ceramic sintered by the glaze has good hydrophobicity, dirt cannot be firmly attached to the surface of the coating, the dirt can be washed away when water drops flow past a surface layer, andan antifouling effect is achieved; and a preparation process is simple, the conditions are easy to control, and production cost is low.

The invention relates to a ceramic adhesive and a preparation method thereof. The ceramic adhesive is prepared from raw materials in parts by weight as follows: 20-35 parts of quartz sand, 10-13 parts of synthetic resin, 10-15 parts of butanediol, 5-9 parts of amino resin, 3-6 parts of phenolic resin, 6-8 parts of a polyvinyl acetate emulsion, 8-11 parts of butyl p-hydroxybenzoate, 5-10 parts of high-carbon alcohol aliphatic ester composition and 3-5 parts of titanium dioxide. The materials are easy to obtain, the preparation method is simple, the ceramic adhesive is low in cost, small in density, light in mass, high in adhesion, high in bonding force, good in permeability, waterproof, moisture-proof and high-temperature resistant, has certain fireproof effect and insulativity and good defoaming or non-foaming effect, realizes rapid drying, can effectively bond hard materials such as ceramic, metal and the like and is wide in application range, safe, non-poisonous and good in environment-friendly effect.

The invention relates to the field of manufacturing anindoor hose in a household natural gas pipeline, in particular to a preparation method of a rubber hose non-metal material used in anti-solvent type (methane type) medium. The novel household fuel gas hose has a multilayer composite structure which consists of an inner layer (1), a middle layer (2) and an outer layer (3), the three layers are respectively formed by mixing the following compositions in parts by weight: the inner layer (1): 30-100 parts of epichloro-hydrin rubber, 0-70 parts of nitrile butadiene rubber, 10-200 parts of filling reinforcing agent, 0.5-40 parts of vulcanizing agent, 0.5-20 parts of accelerant, and other processing aids; the middle layer (2): 100 parts of nitrile butadiene rubber, 10-200 parts of filling reinforcing agent, 0.5-20 parts of vulcanizing agent, 0.5-20 parts of accelerant, and other processing aids; the outer layer (3): 10-100 parts of chloroprene rubber, 0-90 parts of chlorinated polyethylene, 10-200 parts of filling reinforcing agent, 0.5-20 parts of vulcanizing agent, 0.5-20 parts of accelerant, and other processing aids. The obtained rubber hose is good in physical and mechanical properties, good in airtight property, and good in fuel gas corrosion resistance, pressure resistance and thermal stability, and the service life of the rubber hose can be prolonged.