30results about How to "Fast wetting" patented technology

The invention discloses a special coated sand for castings made of high alloy material, which comprises raw sand, lubricant, binder, curing agent and coupling agent, and the binder accounts for 1.7-1.9% of the total mass of the raw sand %; the curing agent is 9-11% of the quality of the binder; the lubricant is 6-8% of the quality of the binder; the coupling agent is 1% of the quality of the binder -2%; the original sand includes recycled sand, pearl sand and magnetite sand; the recycled sand accounts for 50-65% of the total mass of the original sand; the pearl sand accounts for 25-35% of the total mass of the original sand %; the magnetite sand accounts for 10-15% of the total mass of the raw sand, and has various high-quality characteristics such as high temperature resistance, high strength, low expansion, low gas generation, and easy collapse, which can ensure the smooth process of high alloy castings to improve production efficiency.

The invention discloses a delinting penetrant for cotton-seed processing. The delinting penetrant is prepared by the following technological processes: feeding 650-750 parts by weight of polyoxyethylene ether into a reactor with mixing function, sequentially adding 240-280 parts by weight of emulsifier TS-10 (alkyl acid polyoxyethylene alkyl ether) or 6501 (coconut oil fatty acid diethanol amide)and 30-50 parts by weight of triethanolamine, and stirring for 20-60 minutes to obtain the delinting penetrant finally. The product prepared by the process disclosed by the invention does not cake incold winter, is resistant against strong acid and strong base and has fast wetting speed and stable performance, and usage amount can be greatly reduced during seed processing; meanwhile, residual acid content in the processed seeds is low, the production cost is reduced, and the product operating requirement is met.

The invention discloses a sea-island microfiber leather processing process which includes a step S1 of spinning sea-island microfiber, adopting a figured sea-island method to spin sea-island microfibers; a step S2 of preparing sea-island microfiber non-woven fabrics, causing the sea-island microfibers to undergo opening, carding, lapping, pre-needling and needling, to obtain the sea-island microfiber non-woven fabrics; a step S3 of performing ultrasonic softening treatment on the sea-island microfiber non-woven fabrics; a step S4 of impregnating and curing the sea-island microfiber non-woven fabrics, impregnating the sea-island microfiber non-woven fabrics in resin liquid, performing repeated squeezing, and performing ultrasonic processing through an ultrasound instrument and drying through a drying oven, to obtain a sea-island microfiber leather base; and a step S5 of performing decrement, softening, expanding drying forming, skin kneading and dyeing, to obtain finished sea-island microfiber leather. According to the sea-island microfiber leather processing process, process arrangement is reasonable, organic matter volatilization in the production process is less, the sea-island microfiber leather processing process is environmentally friendly and is easily impregnated, the coloring speed is appropriate, and the prepared sea-island microfiber leather is uniform in color and good in softness.

The invention relates to a method for preparing a carbon particle reinforced metal matrix composite material, belonging to the technical field of metal material preparation. By degumming short carbon fiber and phenolic resin powder with high energy to obtain metal powder with carbon particles and phenolic resin evenly embedded, and then subjecting it to ultrasonic and drying treatment, the metal powder with internal carbon and phenolic resin powder embedded in the surface carbon removal is obtained, and then It is mixed with phenolic resin powder and other components and then pressed and sintered to obtain a carbon particle reinforced metal matrix composite material. The invention successfully solves the problem of non-dense interface sintering of the metal powder embedded with carbon particles in the sintering process, and realizes the mechanical properties and wear resistance of the metal composite material designed and prepared under the premise of dense sintering of the metal powder. Improvement, simple preparation process and low cost.

The invention relates to a method for preparing a metal material or a metal composite material, in particular to a method for preparing a metal material or a metal composite material by adding phenolic resin powder. The preparation method includes two sets of schemes; scheme one is: uniformly mix the raw materials, press-sinter to obtain metal materials; the raw materials include metal powder and phenolic resin powder; scheme two is: ball mill the reinforcing body and the matrix metal A Obtain the metal powder embedded with reinforcements on the surface and inside; carry out ultrasonic treatment on the metal powder embedded with reinforcements combined with low-temperature heating-chilling process to remove the reinforcement particles on the surface to obtain spare materials; mix the spare materials with phenolic resin powder Pressing-sintering, or mixing the reserve material with phenolic resin powder and particle phase B and then pressing-sintering to obtain a carbon / metal composite material. The preparation process of the invention is simple, the obtained product has excellent performance, and is convenient for large-scale application.

The invention relates to an epoxy resin system and a preparation method thereof. The epoxy resin system comprises a component A and a component B, and the component A comprises 80-85% of epoxy resin, 14-19% of a diluent and 0.1-3% of a functional assistant; and the component B comprises 40-60% of alicyclic amine, 20-45% of polyetheramine and 10-30% of a toughening modifier, wherein the epoxy resin is one or more of bisphenol AD epoxy resin, hydrogenated bisphenol AD epoxy resin, hydrogenated bisphenol A epoxy resin and hydrogenated bisphenol F epoxy resin The epoxy resin system has a fast wetting speed and a good infiltrating effect on carbon fibers, can realize rapid solidification and good heat resistance, and has excellent technological operationality and excellent mechanical properties; and a solidified material can be baked at a high temperature or used outdoor without efflorescence or yellowing phenomena, can be used to make unmanned planes, and meets unmanned planes' performance requirements of composite materials.

The invention discloses a surface wetting agent with polysulfonic acid structure and a preparation method thereof. The preparation method comprises: 1) mixing dipentaerythritol and hexanoyl chloride, stirring and reacting at 30-50°C for 2-4 hours, cooling to room temperature; neutralizing , washed with water, extracted, and the solvent was distilled off under reduced pressure to obtain a viscous liquid intermediate I; 2) Add the first solvent to the viscous liquid intermediate I, and after it is completely dissolved, add powdered sodium hydroxide and stir at 25-35°C React for 0.5-1h, then add 3-chloro-2-hydroxypropylpropanesulfonate sodium into the solution, raise the temperature to 80-90°C, react for 5-7 hours, and obtain the solid product intermediate II by suction filtration; 3) the solid Add the product intermediate II into the second solvent, add hexamethylene diisocyanate under magnetic stirring, raise the temperature to 40-50°C, react for 3-5 hours, filter with suction and dry to obtain a surface wetting agent with polysulfonic acid structure. The preparation method solves the problem of poor spreading of water on the solid surface.

The invention discloses a method for preparing a special compound water reducing agent for a fireproof material. The method comprises the following steps of 1, polycarboxylic acid synthesizing: mixing 50-60 parts by weight of polyethylene glycol PEG100, 15-20 parts by weight of methacrylic acid, 5-10 parts by weight of ammonium persulfate solution with 5 percent of mass fraction and 18-25 parts by weight of mercapto ethanol solution with 10 percent of mass fraction, and polymerizing and reacting at 1-2 barometric pressure and 60-100 DEG C to obtain a polycarboxylic acid mixed solution; 2, carrier slurry control: using alumina micro powder as a carrier to be fully stirred with the obtained polycarboxylic acid mixed solution, controlling the solid content of the slurry to be 50-80 percent and the viscosity of the slurry to be 100-1000 mPa.S; and 3, carrier spraying and drying: atomizing and drying the mixed slurry. The compound water reducing agent prepared by the method has the advantages of easiness in dispersion, fast wetting, high water reducing rate, no bleeding, improved high-temperature performance and the like.