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213 results about "Green materials" patented technology

Method of making laminate thin-wall ceramic tubes and said tubes with electrodes, particularly for solid oxide fuel cells

A method of fabricating a ceramic tube with electrodes thereon suitable for use as a tubular reaction chamber for a fuel cell. In one embodiment, the method includes wrapping a first electrode material around a mandrel, then wrapping a green ceramic material over the first electrode material, and then wrapping a second electrode material over the green ceramic material. The wrapped layers are laminated together, and then removed from the mandrel and sintered, in either sequence, to produce the laminated ceramic tube having an inner first electrode and an outer second electrode. Alternatively, a first electrode tube is provided in place of the mandrel and around which the green ceramic material is wrapped. The outer second electrode may be produced by wrapping a second electrode material around the green ceramic material, before or after laminating, or by printing the electrode material onto the sintered ceramic tube. The present invention further provides a method of making a ceramic tube in which a sacrificial organic material is first wrapped around the mandrel to a desired thickness prior to wrapping the green ceramic material to increase the green material thickness. During sintering, the organic material is burned away leaving only a laminated ceramic tube, optionally with electrodes thereon.
Owner:PRESIDIO COMPONENTS

Pyrolytic hard carbon material and application thereof

The invention discloses a pyrolytic hard carbon material. In one embodiment, the material is prepared by the following steps: drying waste biomass; heating to 300-600 DEG C in an inert atmosphere, and carrying out pre-carbonization for 1-5 hours; heating to 1000-1600 DEG C in an inert atmosphere, carbonizing, and pyrolyzing for 1-10 hours; and cooling to obtain the pyrolytic carbon material. The obtained pyrolytic hard carbon material is irregular blocky particles of which the particle size is 1-20 mu m and the average particle size is 5-10 mu m; and the d002 value is 0.38-0.41nm, the Lc value is 1.3-1.5nm, and the La value is 3.7-4.7nm. The pyrolytic hard carbon material has the advantages of simple preparation process, abundant raw material resources and low cost, and is pollution-free green material. The sodium ion secondary battery prepared by using the pyrolytic hard carbon material as the negative electrode active material has the advantages of higher working voltage, higher energy density, high circulation stability and favorable safety performance, and is applicable to large-scale energy storage facilities for solar power generation, wind power generation, intelligent electric network peak shaving, distribution power stations, backup power sources or communication base stations.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

2-2 type ferroelectrics-ferrite multilayered compound magnetoelectricity material and the corresponding preparation method

The invention relates to a 2-2 type ferroelectrics-ferrite multilayer composite magnetoelectric material and the preparation method, which relates to a ferroelectrics-ferrite multilayer composite magnetoelectric material. The invention consists of a ferroelectrics and a ferrite, the ferroelectrics and the ferrite materials are composed by adopting a layered alternate arrangement mode, wherein, the ferroelectrics material selects a lead zirconate titanate PbZr0.52Ti0.48O3 ceramics, and the ferrite selects a cobalt ferrite CoFe2O4 ferrite ceramics. An organic solvent, a plasticizer, a dispersant and a bonding agent are added in PZT powder and are ball milled and mixed to obtain a paste; the paste is treated with screening, defoaming and doctor blade casting to obtain an electrolyte thin film green, demoulding and cutting are carried out; the organic solvent, the plasticizer, the dispersant and the bonding agent are added in CFO powder and are ball milled and mixed to obtain the paste; the paste is treated with screening, defoaming and doctor blade casting to obtain the electrolyte thin film green, the demoulding and cutting are carried out; the PZT green and the CFO green are overlapped alternatively, a multi-layer composite green material is obtained by heating and pressurizing, roasting and hydrostatic pressure processing are carried out, and then sintering and molding are carried out for preparation.
Owner:XIAMEN UNIV

Polyether type polyurethane prepolymer containing long lateral-chain organosilicon, and preparation method and application thereof

The invention discloses a polyether type polyurethane prepolymer containing long lateral-chain organosilicon, and a preparation method and application thereof. The method comprises the following steps: as for the prepolymer, taking 100 weight parts of polyether triatomic alcohol and 10-50 weight parts of diisocyanate to react to obtain an isocyanate radical end capped polyurethane prepolymer; adding 15-1500 weight parts of long-chain single-end hydroxyl polysilicone and 0-0.5 weight parts of organometallic catalyst into the prepolymer for grafting modification reaction, thereby obtaining the polyether type polyurethane prepolymer provided by the invention. Moreover, the polyether type polyurethane prepolymer can be mixed with other polyurethane prepolymers, a polyurethane elastic body can be obtained through adding chain extendor and has greatly improved surface performance and heat resistance. The advantages that the raw materials are low in cost and easy to obtain, the synthesis procedures are simple, the reaction rate is moderate, the operation conditions are easy to control, and industrialized production is appropriate are achieved. Moreover, environment pollution is avoided, and the development direction of 'green material' is met.
Owner:GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI

Organic/inorganic composite material for rapidly repairing pit slots of bituminous pavement and preparation method thereof

The invention discloses an organic/inorganic composite material for rapidly repairing pit slots of a bituminous pavement, which is prepared from the following main raw materials of polymethylene polyphenyl polyisocyanates, a polyurethane prepolymer, polyether polyol, petroleum asphalt, a catalyst, sodium silicate powder, carborundum and the like. The composition material comprises components A, B and C, wherein the components A and the component B are blended with the component C after being mixed, and can be quickly solidified after being cast into the pit slots at room temperature, so that the composite material has strong caking property and similar rigidity with an original bituminous pavement, and the travelling stationarity and comfortableness are achieved after restoration. The composite material is simple and convenient to construct, rapid, efficient and environmentally friendly, the setting time is smaller than or equal to 30 minutes, and the bituminous pavement can be opened after 90 minutes, so that the rapid repairing purpose is achieved, and the effect on traffic jam caused by pavement rehabilitation is greatly relieved. The composite material has excellent water tolerance, weather fastness, abrasive resistance and compressive shear resistance, is a novel green material for rapidly repairing pit slots of a pavement, and has positive promotion action and a good application effect on development of a preventive maintenance technology of highways.
Owner:北京中科安途交通科技有限公司

Methods for preparation of nano cellulose composite aerogel adsorbent and adsorption of heavy metal ions

The invention relates to methods for preparation of a nano cellulose composite aerogel adsorbent and adsorption of heavy metal ions, and belongs to the technical fields of macromolecules, biomass materials and chemical crossing. In an aqueous solution, nano cellulose is mixed with a macromolecular polymer with strong humidification properties, and a structure of a hydrogel is regulated by means ofcircular freezing, thawing and freezing; the aerogel with shape recovery properties can be obtained by freeze drying, and is used as an adsorbent to remove heavy metal ions efficiently. The rapid andefficient deadsorption and regeneration of the aerogel adsorbent can be achieved by means of circular extrusion, absorption and displacement and extrusion, and the aerogel can be repeatedly applied to adsorption and removal of the heavy metal ions. The used raw materials belong to environmental friendly green material, and are safe, non-toxic and degradable. The method for preparation of the adsorbent is simple, the process is easy to control, and the adsorbent has shape recovery property in an aqueous solution, can be quickly and efficiently desorbed and regenerated, can be reused for many times, and has wide application prospects in the field of wastewater treatment.
Owner:NANJING FORESTRY UNIV

Preparation method of dry powder ceramic tile and green tile thereof, and finished product

The invention relates to a preparation method of a dry powder ceramic tile and a green tile thereof, and a finished product. The preparation method of the green tile comprises the following steps: A. bottom material distribution; B. facing material distribution in press mold cavity: distributing one or a plurality of dry powders on a green material layer by using a screen provided with a hollow decorating pattern; and C. punch forming. In the method, the step A and step B are in no particular order, the step A-C sequence is a reverse punching mode; and when the step A and step B are in the reverse order, the sequence is a forward punching mode. The invention provides the preparation method of the dry powder ceramic tile and green tile thereof; and the method solves the problem that the decorative pattern is not fine enough and is not controllable or variable in the existing powder full-body tile or unglazed ceramic tile. In addition, according to the semifinished product green tile and the finished product ceramic tile, the decorative effects on the tile surfaces are wear-resistant; and the surface of the ceramic tile can be subjected to slot broaching, trimming or chamfering, and the exposed part of the cut surface has the same pattern, texture and tactile sensation as the surface of the ceramic tile, thereby enhancing the grade of the decorating effect of the ceramic tile and widening the application range of the ceramic tile.
Owner:FOSHAN DONGPENG CERAMIC +3

Cockroach and eupolyphaga large-scale mixed breeding technique

InactiveCN102144615AIn line with the original wild life habitsPromote growthAnimal husbandryDiseaseHabit
The invention relates to a cockroach and eupolyphaga large-scale mixed breeding technique and belongs to a method for breeding specific animals. A cockroach and eupolyphaga mixed breeding method is characterized in that: 1, breeding environment, a pool which is a precursor of a three-dimensional greenhouse feeding pond is adopted; 2, food stuffs feeding, wherein adults and larvae of the eupolyphaga and the cockroach have the same food stuffs such as wheat bran, rice chaff, green vegetables, carrots, rice paste, pumpkins, pericarp, leaves and the like; and the food stuffs based on the green materials are fed for one time every 2 to 3 days and more dried materials such as the wheat bran are fed; 3, management of larval and middle-aged cockroaches, wherein larvae are not required to be separated from eggmass at the early stage after reproduction of the cockroach; and management of larval and middle-aged eupolyphaga is that the larvae are separated from eggmass after being incubated; and 4, prevention and control of diseases and insect damage, wherein the natural enemies of the cockroach and the eupolyphaga during artificial culture are ants, mice, spiders, chickens, ducks, birds and the like; and the diseases and insect damage are prevented in advance and treated actively. The cockroach and eupolyphaga large-scale mixed breeding technique has the advantages of accordance with the original wild life habit of the cockroach and greatly increasing growth speed and reproductive speed of the cockroach, along with high medicament properties, strong effect, excellent quality and high market price.
Owner:鞠芳

NASICON (Na Super Ion Conductors) structure-based sodium ion solid electrolyte composite material and preparation method and application thereof

The invention provides an NASICON (Na Super Ion Conductors) structure-based sodium ion solid electrolyte composite material and a preparation method and application thereof. The general formula of the sodium ion solid electrolyte composite material is (x)Na<3>La(PO<4>)<2>/Na<3-2x>Zr<2-x>Si<2>P<1-2x>O<12-8x>, wherein x is more than 0 but less than or equal to 0.5. The composite material is synthesized respectively by employing a traditional solid phase reaction method and a sol-gel method. The preparation method is simple and practical, is low in cost and can be suitably used for fabrication on a large scale. The sodium ion solid electrolyte composite material is excellent in thermal stability, is a non-pollution inorganic green material and can be used as a key part-solid electrolyte in a sodium all-solid-state battery. A secondary battery employing the sodium ion solid electrolyte material is excellent in cycle performance and good in safety performance, has a great practical value and can be used for solar power generation, wind power generation, intelligent peak regulation in a power grid, power station distribution, an emergency power supply or large-scale intelligent equipment of a communication base station.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

Environment-friendly type slurry compound curing agent

The invention discloses an environment-friendly type slurry compound curing agent. The environment-friendly type slurry compound curing agent is prepared from the following dry powder raw materials: mineral slag or a mineral slag composition, carbide slag, Na2SO4, magnesium oxide, magnesium chloride, silicon powder and sodium polyacrylate, wherein the mineral slag composition is a mixture of the mineral slag and fly ash, or a mixture of the mineral slag and steel slag, or a mixture of the mineral slag, the fly ash and the steel slag. According to the curing agent prepared by the invention, thetechnical problem that slurry is difficult to cure stably under the condition that the moisture content is high is solved; after the curing agent which accounts for 35 percent of the dry weight of the slurry is added, the 7-day strength of the slurry with the moisture content of 70 percent can reach 40 Mpa or more; a manner of replacing traditional cement-based curing with industrial wastes including the fly ash, the silicon powder, the carbide slag, the mineral slag and the steel slag is sufficiently utilized, so that the energy consumption and the emission of CO2 are effectively reduced; meanwhile, novel green materials including the magnesium chloride, the magnesium oxide and the like are added, so that the early-period and later-period strength and stability of drilling slurry are easy to improve; the curing agent is convenient to transport or meets the requirements of engineering filling under the condition of meeting economical and environment-friendly requirements.
Owner:WUHAN UNIV

Low temperature-resistant and distortion-resistant power cable with copper conductor TPE insulated sheath for wind power generation

The invention discloses a lower temperature-resistant and distortion-resistant power cable with a copper conductor TPE insulated sheath for wind power generation, which comprises at least one conductor, wherein each conductor is externally provided with a TPE insulated layer; the outermost layer of the cable is a TPE sheath; when the number of the conductors is one, a layer of conductor lapping is arranged between the outside of the conductor and the TPE insulated layer; and when the number of the conductors is at least two, the outside of the TPE insulated layer covering the conductors is provided with a PP rope filling; and the TPE sheath is internally provided with a layer of cabling lapping to cover the PP rope filling. Detected by national authorized detection departments, the cable fully meets technical requirements of wind power cables, improves the characteristics of lower temperature resistance and distortion resistance of the wind power cables, replaces the conventional rubber insulated rubber sheath, realizes localization, and breaks through a situation of dependence on import. The TPE is a recyclable 'green material', is easy to degrade and has environmental protection and obvious economic benefit.
Owner:四川鑫电电缆有限公司
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