39results about How to "Good flow dispersion" patented technology

The invention relates to the technical field of concrete additives in building materials, specifically to an early strength type polycarboxylate superplasticizer and a preparation method thereof. Theearly strength type polycarboxylate superplasticizer is prepared from the following raw materials through a polymerization reaction: block unsaturated polyoxyethylene ether, acrylic acid, a functionalmonomer, a chain transfer agent, an oxidative initiator and a reductive initiator. According to the invention, the block unsaturated polyoxyethylene ether is adopted as a raw material, and a macromolecular block polyether side chain can improve the water-reducing rate performance of a superplasticizer, also exerts the performances of early strength, viscosity reduction and shrinkage resistance, greatly reduces the content of air, shortens the setting time of concrete and has excellent working performance and adaptability.

The invention provides a ginkgolic acid grafted and modified polycarboxylate water-reducer and a preparation method thereof. The polycarboxylate water-reducer is a random copolymer prepared by polymerizing ginkgolic acid, unsaturated polyether, unsaturated carboxylic acid or salt thereof. The preparation method comprises the following steps: dissolving ginkgolic acid and unsaturated polyether into water; heating the solution to reach the temperature of 20-80 DEG C; then correspondingly dropwise adding the aqueous solution of unsaturated carboxylic acid and the aqueous solution of an initiator and a chain transfer agent for 2-2.5 hours and 3-3.5 hours; continuously reacting for 1 hour under the temperature of 20-80 DEG C after dropwise adding; cooling; neutralizing the system with liquid caustic soda until the pH is 6-7, so as to obtain the ginkgolic acid grafted and modified polycarboxylate superplasticizer. According to the preparation method, unsaturated ginkgolic acid is extracted from waste ginkgo biloba exocarp; carboxyl, hydroxyl and side chain of ginkgolic acid are introduced into a water-reducer molecular structure, therefore, the wastes are treated into treasure on the premise that the performance of the water-reducer is maintained, and as a result, the environment is protected, and the cost of the polycarboxylate water-reducer is decreased.

The invention relates to the technical field of biaxially oriented polypropylene extinction films, and concretely relates to a matting material for BOPP, a preparation method thereof, and a BOPP matting film. The matting material for BOPP is prepared from, by weight, 40-60% of co-polypropylene, 35-55% of high-density polyethylene, 5-15% of a master batch A and 0.5-5% of an antioxidant master batch, wherein the master batch A comprises a master batch matrix and hydrogenated petroleum resin or rosin resin, and the master batch matrix is polypropylene. The preparation method of the matting material for the BOPP comprises the following steps: mixing the co-polypropylene, the high-density polyethylene, the master batch A and the antioxidant master batch in a high-speed mixer, and performing extrusion granulation by adopting a double-screw extruder at an extrusion temperature of 225-240 DEG C. The BOPP matting film prepared from the matting material for BOPP is good in overall extinction uniformity, particularly, the glossiness of the two sides of the film is reduced, the haze of the two sides of the film is improved, the thickness of a matting layer is reduced, and the production speedis increased.

The invention discloses a novel polyaluminum chloride water purifying agent and a preparation method thereof. Polyaluminum chloride contains 10wt%-12wt% of aluminum oxide, has basicity being 70 wt%-95wt%, contains lower than or equal to 0.1wt% of water insoluble substances and has pH (10g/L aqueous solution) being 4.5-5.0. The preparation method of the polyaluminum chloride water purifying agent comprises the following steps: preparing aluminum-containing mother liquor, and performing high-speed dispersion and homogenization to obtain homogenized mother liquor; adding an alkaline regulator under the condition of high-speed dispersion to adjust the polymerization degree, and performing continuous reaction to obtain the polyaluminium chloride water purifying agent. The novel polyaluminum chloride water purifying agent has the advantages of high aluminum, high basicity, high flow dispersibility, wider pH application range, better coagulation effect, COD removal rate up to 50% or higher and TP removal rate up to about 99%. In the preparation method, the high-speed dispersion technology is adopted to homogenize the aluminum-containing mother liquor and the polymerization degree and adjust reaction procedure, so that the defect of limited polymerization degree adjustment of the traditional alkali adjustment system is overcome, and complete slag-free continuous production of water purifying agent with high polymerization degree is achieved.

The invention discloses a colloidal nano sulfur and a sulfur colloidal nano encapsulation modification method. The colloidal nano sulfur comprises the following components: 70 to 80 parts by weight of sulfur, 8 to 10 parts by weight of liquid nitrile rubber, 5 to 7 parts by weight of triglycerin fatty acid ester, 4 to 8 parts by weight of fatty acid monoglyceride and 3 to 5 parts by weight of zinc stearate. The sulfur colloid nano encapsulation modification method comprises steps of mixing, reaction, grinding and cooling. The powder sulfur modified capsule nano colloid provided by the invention can comprehensively improve the dispersion of mixing rubber material and ensure product molding sulfuration to form a homogeneous three-dimensional cross-linked structure elastomer. The feeding mode is flexible and suitable for production processes of different product rubber compounds; and the colloidal nano sulfur is an indispensable crosslinking auxiliary agent for modern rubber formula and efficient production process.

The invention discloses a preparation method of a royal jelly microcapsule. The method comprises the following steps: preparing a water solution of sodium alginate with a concentration of 0.015 to 0.025 g/mL and a water solution of loyal jelly with a concentration of 0.15 g/mL, taking the two water solutions as the raw material solution; preparing a mixed solution containing CaCl2 (5-15 mg/mL), chitosan (2.5-7.5 mg/mL), and royal jelly (0.15 g/mL), wherein the pH value of the mixed solution is 4.5 to 6.0, subjecting the mixed solution to a centrifugation treatment, taking the supernate as the gel bath; transporting the raw material solution to the positive pole of a nozzle through a peristaltic pump, arranging a round disc, which is made of stainless steel and is provided with a hole in the center, right under the nozzle and above the gel bath, taking the round disc as the negative pole, spraying the raw material solution into the gel bath from the nozzle to form calcium alginate micro beads in the gel bath, and then subjecting the micro beads to processes of suction filtration, water washing, and freeze-drying so as to obtain the royal jelly microcapsule. The preparation method has the advantages of low temperature and short time. The moisture absorbing property of the freeze-dried powder in the royal jelly microcapsule is reduced, the pungent smell is prominently reduced at the same time, and the microcapsule can tolerate the stomach environment and finally releases freeze-dried powder in the small intestines.

The invention belongs to the technical field of wood-plastic plates, and particularly discloses a container wood-plastic bottom plate and a preparation method thereof. The container wood-plastic bottom plate comprises a core layer and a skin layer wrapping the core layer, a reinforcing layer is arranged between the core layer and the skin layer; the core layer and the skin layer are wood-plastic plates, the core layer is doped with short fibers; the reinforcing layer has a net-shaped structure and is made of glass fibers or metal, and the core layer, the skin layer and the reinforcing layer are integrally formed by adopting a co-extrusion process. By adding short fibers into the wood-plastic material of the core layer and arranging the reinforcing layer, the strength of the wood-plastic plate is remarkably improved, and the strength requirement of a container bottom plate is met. The skin layer wraps and protects the core layer and the reinforcing layer, the service life of the bottomplate is prolonged; the reinforcing layer is designed into a net-shaped structure, and a co-extrusion process is adopted, so that the bonding firmness between layers is greatly improved.

The invention discloses a recycled pavement paving board and a manufacturing technology thereof. The recycled pavement paving board comprises a base layer and a surface layer, wherein the base layer comprises the following components in parts by weight: 20-22 parts of cement, 4-6 parts of fly ash, 25-40 parts of reclaimed sand, 21-26 parts of recycled coarse aggregates, 0.1-0.5 part of a recycledfine powder, 0.2-0.4 part of an admixture and 8-10 parts of water; the surface layer comprises the following components in parts by weight: 25-30 parts of cement, 5-8 parts of fly ash, 10-15 parts ofa quartz powder, 33-51 parts of medium sand, 0.2-0.5 part of modified resin, 1-1.5 parts of a waterproof powder, 0.5-1 part of cellulose, 0.4-0.6 part of the admixture and 6-9 parts of water; and therecycled fine powder is prepared by grinding at least one of recycled concrete, recycled bricks, waste sintered red bricks, waste stone materials and waste ceramic. The recycled pavement paving boardhas the advantages of low production cost, good impact resistance, and good water and pollutant resistance.

The invention relates to a plant essential oil inclusion compound and a preparation method thereof, and belongs to the technical field of microcapsules. The plant essential oil inclusion compound provided by the invention comprises the following raw materials in percentage by mass: 50% -80% of a skeleton, 5% -25% of plant essential oil and 10% -30% of a coating solution, wherein the skeleton consists of a mixture of starch, silicon dioxide, microcrystalline cellulose and dextrin; the coating solution is a hydroxypropyl methyl cellulose solution or an ethyl cellulose solution; the plant essential oil is adsorbed on the surface and in pores of the skeleton; and the plant essential oil and the skeleton are wrapped in a coating layer formed by the coating solution. The plant essential oil inclusion compound disclosed by the invention has the advantages of being easy in obtaining of the raw materials, low in cost, good in fluidity, low in loss, good in stability, excellent in slow release properties and high in bioavailability, and has important significance for application of the plant essential oil in feeds.

The invention provides an aerobic powdered soap composition having a degerming function. The aerobic powdered soap composition comprises, by weight, 7-12 parts of coconut oil powdered soap, 3-8 partsof palm kernel oil powdered soap, 5-20 parts of a surfactant, 0.4-0.9 part of EDTA-4Na, 0.5-1 part of carboxymethyl cellulose, 10-15 parts of 4A zeolite, 0.1-0.6 part of a fluorescent brightener, 0.2-0.6 part of protease, 0.01-10 parts of sodium percarbonate, 0.01-1 part of essence, 20-60 parts of a filler, 3-6 parts of a kelp extract, and 1 part of porous zinc oxide. The invention further provides a preparation method of the powdered soap composition. The provided powdered soap composition is excellent in degerming performance, washing performance and flow dispersibility.

The invention provides a powder metallurgy material for preparing a synchronizer gear hub. The powder metallurgy material comprises the following components: nanoscale prefabricated alloy powder, molybdenum powder, graphite powder, metal carbide powder, an additive and iron powder; the nanoscale prefabricated alloy powder is Cu-Ni-Si-RE prefabricated alloy powder; and the metal carbide powder is Co/Ti carbide. Powder metallurgy compositions are reasonably compounded, raw material selection is optimized, powder materials have excellent dispersity, the pressing uniformity is good, the structure is uniform and compact, mechanical properties are stable and improved, the surface is free of cracks and spots, the precision grade can reach level IT5-7, comprehensive benefits are higher, and the material is worthy of application and popularization.

The invention relates to the field of water treatment, and provides a coated purification deodorant for sewage treatment and a preparation process thereof. A slow-release cementing material comprises an inner core, a transition layer and an outer coating layer which are sequentially arranged from inside to outside, wherein the inner core is honeycomb ceramic particles doped with water treatment agent; the transition layer is polyacrylamide gel doped with water treatment agent supported inorganic fibers, the outer coating layer is silica-alumina gel doped with water treatment agent supported composite fibers, the water treatment agent is reasonably coated and designed in a multi-layer mode, multiple purification effects of biological purification and chemical purification are achieved, the sewage treatment efficiency is greatly improved through sequential progressive cooperation, the purifying and deodorizing effects are good, the effect taking is fast, the lasting effect is long, the comprehensive benefits are obviously improved, and the process is worthy of popularization and application.