15results about How to "Good fluidity" patented technology

The invention belongs to the field of cementing materials for rigid pavement, and relates to an alkali-activated cementing material and a preparation method thereof, and the alkali-activated cementing material comprises the following main components: 160-200 parts of slag, 140-170 parts of garbage ash, 220-260 parts of fly ash, 100-140 parts of sodium silicate, 16-24 parts of NaOH, 140-160 parts of water and 1200-1260 parts of sand. The water-binder ratio of the alkali-activated cementing material is 0.28 to 0.38. The alkali-activated cementing material prepared by the technical scheme of the invention has the characteristics of simple preparation, high early strength, high later strength, fast setting and hardening, good fire resistance, good environmental protection performance and the like, can significantly improve the working performance and durability of a building structure, can realize large-scale recycling of industrial wastes, and has wide application prospects. And environmental pollution caused by engineering construction is reduced.

The invention discloses a reinforcing steel bar sleeve grouting material for a high-strength micro-expansion fabricated concrete structure. The reinforcing steel bar sleeve grouting material is prepared from the following raw materials in parts by weight: 735 to 795 parts of cement, 15 to 85 parts of silica fume, 80 to 90 parts of lithium slag powder, 9 to 36 parts of magnesium slag powder, 500 to 800 parts of quartz sand, 100 to 400 parts of basalt sand, 9 to 12.6 parts of a water reducing agent, 0.9 to 4.5 parts of a retarder, 0.9 to 4.5 parts of a reinforcing agent, 0.6 to 1.2 parts of a de-foaming agent, 0.6 to 1.2 parts of a suspension stabilizer, 0.1 to 0.3 part of a plastic expanding agent and 45 to 72 parts of a UEA expanding agent. The grouting material disclosed by the invention has the advantages of high strength, micro-expansion, good fluidity, no bleeding, no segregation and the like, and meets the use requirements of an assembled concrete structure.

This invention discloses an early-strength, high-stability road grouting repair material and its preparation, belonging to the field of solid waste utilization and road grouting reinforcement technology. The raw materials of the early-strength, high-stability road grouting repair material of this invention include multi-source solid waste aggregates and a water-reducing agent; the multi-source solid waste aggregates, by mass percentage, include: 6.6 wt% fly ash, 5-15 wt% rapid-hardening sulfoaluminate cement, 64-74 wt% mineral powder, 13.4 wt% desulfurized gypsum, and 1% carbide slag. This invention constructs a quaternary solid waste system of fly ash-desulfurized gypsum-mineral powder-carbide slag, synergistically forming a slurry composite system with rapid-hardening sulfoaluminate cement and a water-reducing agent, and precisely controls the concentration of raw materials. During hydration, this system can generate supporting crystals, which not only provide high early-stage stone strength for the road grouting material, but also, due to its good stability, ensure high stone strength stability in the later stages.

According to the rapidly-solidified waste-based foaming material and the preparation method and application thereof, the rapidly-solidified waste-based foaming material with better early strength, especially better 2h early strength, can be obtained based on a formula system, and the obtained material has good foam hole uniformity. The rapid setting waste-based foaming material is prepared from the following raw materials in parts by mass: 10 to 50 parts of aluminate cement, 10 to 80 parts of high-calcium minerals, 0.01 to 2 parts of a retarder, 0.001 to 2 parts of a water reducing agent, 0.01 to 1 part of a foam stabilizer, 0 to 5 parts of a thickening agent and 0.005 to 15 parts of a foaming agent, wherein the mass content of free calcium oxide in the high-calcium mineral is 2 to 40 weight percent, preferably 5 to 20 weight percent; the mass ratio of the aluminate cement to the high-calcium mineral is (2-5): 1 or 1: (2-8); the retarder is organic acid containing carboxylate radicals.

The invention provides an early-strength quick-setting lightweight concrete material as well as a preparation method and application thereof. Based on a formula system, the early-strength quick-setting lightweight concrete material with good early strength, particularly 2h strength, can be provided. The early-strength quick-setting lightweight concrete material is prepared from the following raw materials in parts by mass: 10 to 75 parts of aluminate cement, 15 to 80 parts of high-calcium minerals, 0.01 to 2 parts of a retarder, 0.001 to 2 parts of a water reducing agent, 0.01 to 0.5 part of a thickening agent, 0.01 to 1 part of rubber powder and 0.1 to 5 parts of polystyrene foam aggregate, wherein the content of free calcium oxide in the high-calcium mineral is 2 to 40 weight percent, preferably 5 to 20 weight percent; the mass ratio of the aluminate cement to the high-calcium mineral is 5: (1-40); the retarder is organic acid containing carboxylate radicals.

Provided is a method for producing a resin composition for secondary battery electrodes, the method comprising adding a binder resin to a carbon nanotube dispersion liquid which contains carbon nanotubes, a dispersing agent, and a nonaqueous dispersion medium and in which the product (X×Y) of the complex elastic modulus X(Pa) and the phase angle Y(°) at 25°C and 1 Hz obtained by dynamic viscoelastic measurement is 30 to 1,700 and the phase angle is 3° to 90°.

An aspect of the present invention is a thermoplastic elastomer composition including 100 parts by mass of a block copolymer containing a polymer block (X) having an aromatic vinyl compound as a main component and a polymer block (Y) having a conjugated diene compound as a main component, or a hydrogenated product thereof (A); 1 to 400 parts by mass of an ethylene / α-olefin copolymer (B) satisfying the following requirements (b-1) to (b-3); and 0 to 200 parts by mass of a polyolefin-based resin (C) satisfying the following requirement (c-1), (b-1) a kinematic viscosity at 100°C is 5 to 5,000 mm2 / s and a kinematic viscosity at 40°C is 50 to 100,000 mm2 / s, (b-2) a weight-average molecular weight (Mw) determined by gel permeation chromatography (GPC) is 1,000 to 30,000, (b-3) a content ratio of ethylene structural units is 15 to 85 mol%, and (c-1) MFR (230°C and 2.16 kg) is 0.1 to 500 g / 10 min.

The invention relates to the technical field of building materials, in particular to EPS (expandable polystyrene) reinforced foam concrete and a preparation method thereof, and the EPS reinforced foam concrete is prepared from the following raw materials in parts by weight: 50-60 parts of cement, 20-25 parts of water, 0.8-1.2 parts of EPS, 0.8-1.2 parts of foam group, 0.01-0.1 part of rubber powder and 0.4-0.9 part of water reducing agent. Through cooperation of the EPS particles, the foam group, the cement, the water reducing agent and the rubber powder, a light porous structure which takes EPS and closed foam as cores and is extremely low in volume weight is formed, meanwhile, by means of a compact gelling inclusion and a reinforced interface, the material obtains compression resistance and breaking strength far superior to those of conventional foam concrete, shrinkage cracking is effectively inhibited, and the service life of the material is prolonged. The unification of light weight, high strength and toughness is realized.

The invention provides a method for opening a new furnace by using high-silicon molten iron in a 120-ton dry dedusting converter, belongs to the technical field of steel smelting, and solves the problem that the difficulty of opening the new furnace by using the high-silicon molten iron in the existing dry dedusting converter is large. The method comprises the following steps: converter loading: loading molten iron and scrap steel into a 120-ton top-bottom combined blown converter; oxygen supply by the converter: igniting and supplying oxygen after the converter is loaded; the auxiliary materials are added for the first time after ignition, the auxiliary materials are added for the second time, the active lime is added in batches, and then the limestone and the active lime are added in batches; and converter end point control. According to the method, the converter quantity, the scrap steel quantity and the molten iron quantity are reasonably controlled, the complexity and uncertainty in the production process can be reduced, the stable molten pool depth of the converter in the smelting process can be ensured by accurately controlling the charging quantity, and therefore the production efficiency and the product quality are improved, the production cost is reduced, energy consumption is optimized, and the economic benefit is increased. Unnecessary energy consumption and waste generation are reduced, and environmental protection and sustainable development are facilitated.

The present invention provides a resin composition that is excellent in terms of impact resistance, flowability, heat resistance, and chemical resistance and gives molded articles which have a satisfactory appearance and are highly inhibited from making a noise when rubbed against each other. This resin composition is characterized by comprising: 100 parts by weight of a component comprising (A) 45-90 parts by weight of a polycarbonate resin (A component) and (B) 10-55 parts by weight of a copolymer (B component) obtained by polymerizing an aromatic vinyl monomer, a vinyl cyanide monomer, and a diene-based rubbery polymer, (C) 1-10 parts by weight of a graft copolymer (C component) comprising a copolymer obtained by polymerizing an aromatic vinyl monomer and other vinyl monomer(s), as side chains, and an ethylene / vinyl acetate copolymer as a main chain, and (D) 1-10 parts by weight of an isobutylene based block copolymer (D component) obtained by polymerizing one or more monomers including isobutylene as a main component with one or more monomers in which isobutylene is not a main component.

The invention relates to the technical field of separation and extraction of natural products, in particular to a method for supercritical separation and extraction of astaxanthin, which comprises the following steps: (1) weighing raw material components in parts by weight; (2) mixing a biomass raw material rich in astaxanthin with the functionalized deep-eutectic solvent, and performing physical field enhanced extraction to obtain an extracting solution; (3) filtering the extracting solution through a vibrating membrane, and purifying to obtain a trapped fluid containing astaxanthin; and (4) carrying out supercritical CO2 back extraction on the trapped fluid, separating to obtain an astaxanthin product, and recovering the functional eutectic solvent. According to the method, continuous membrane separation and purification under the eutectic solvent system are realized, the purity of astaxanthin and the proportion of all-trans astaxanthin are maintained while the extraction rate of astaxanthin is increased, the solvent can be recycled after being recovered, and the production cost and waste liquid discharge are greatly reduced. All the raw materials are nontoxic and harmless, no organic solvent is used in the technological process, and good application prospects are achieved.

Provided is a resin composition for secondary battery electrodes which contains carbon nanotubes, a dispersing agent, a fluororesin, and a dispersion medium and in which the product (X×Y) of the complex elastic modulus X(Pa) and the phase angle Y(°) at 25°C and 1 Hz obtained by dynamic viscoelastic measurement is 30 to 5,000.

An object of the present invention is to obtain a suitable graft-modified ethylene / α-olefin copolymer as an impact modifier of engineering plastic such as polyamides and to obtain a polyamide composition having further improved impact resistance, particularly, impact resistance at low temperatures, and the present invention relates to a graft-modified ethylene-based polymer (X) formed by graft modification of an ethylene / α-olefin copolymer (A) satisfying requirements (A-i) to (A-iv) below with a polar compound. (A-i) A content of a structural unit (a) derived from ethylene is 51 to 99 mol%, and a content of a structural unit (b) derived from an α-olefin having 5 to 20 carbon atoms is within a range of 1 to 49 mol% [provided that the sum of the structural unit (a) and the structural unit (b) is 100 mol%]. (A-ii) A density is within a range of 0.850 to 0.875 g / cm3. (A-iii) A melt flow rate (MFR) at 190°C and at a load of 2.16 kg is within a range of 0.1 to 25 g / 10 min. (A-iv) A sum of the numbers of a vinyl-type double bond, a vinylidene-type double bond, a disubstituted olefin-type double bond and a trisubstituted olefin-type double bond per 1000 carbon atoms obtained by 1H-NMR is 0.16 to 1.00.

The present invention provides a sophorolipid (SL)-containing composition with excellent handleability and a method for producing the sophorolipid-containing composition. The SL-containing composition according to the present invention includes the following characteristics: (A) the content of lactonic SL being 45 to 81 mass% of the total amount of the SL taken as 100 mass%, and (B) the content of oleic acid-diacetyl lactonic SL being 95 mass% or lower of the total amount of the lactonic SL taken as 100 mass%.

The invention belongs to the field of concrete materials for rigid pavement, and relates to a bridge floor geopolymer concrete material and a preparation method thereof, and the bridge floor geopolymer concrete material comprises the following main components: 140-160 parts of silica fume, 210-230 parts of mineral powder, 80-100 parts of water glass with the modulus of 2.2, 14-18 parts of NaOH, 18-26 parts of MgO, 95-115 parts of water, 185-205 parts of sand with the average particle size of 0.5-1 mm, 107-127 parts of sand with the average particle size of 0.25-0.5 mm, and 68-88 parts of sand with the average particle size of 0.125-0.25 mm. The water-binder comprises, by weight, 354-374 parts of stones with the average particle size of 5-10 mm, 536-556 parts of stones with the average particle size of 10-20 mm and 19-27 parts of polypropylene fibers, and the water-binder ratio is 0.24-0.33. The bridge floor geopolymer concrete prepared by the technical scheme of the invention has the characteristics of high early strength, good flowing property, quicker setting and hardening, better durability, good environmental protection performance and the like, the working performance and durability of the steel-concrete combined bridge floor concrete can be remarkably improved, and the adverse effect of engineering construction on the environment can also be reduced.