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224results about How to "Good product quality and stability" patented technology

High-performance silicone-acrylate-modified water-based epoxy emulsion and production method thereof

InactiveCN102336874AImprove adhesionExcellent closed shielding performanceAnti-corrosive paintsFilling pastesWater basedChemical industry
The invention discloses a high-performance silicone-acrylate-modified water-based epoxy emulsion and a production method thereof, relating to the technical field of production of coatings used in the chemical industry field. The emulsion is prepared with a core-shell mechanism process; in a core layer, a grafted polymer consists of low molecular bisphenol A epoxy resin, epoxy group siloxane and acrylic ester; a shell body consists of hydroxyl-containing siloxane and acrylic ester; and the shell body and the core layer are subjected to interpenetration graft polymerization. In the invention, epoxy resin is modified with an organic silicon acrylic acid monomer, so that a dense crosslinked netlike structure with a special interpenetration network and excellent enclosed shielding performance is obtained. Multiple series of anti-corrosive paints can be prepared on the basis of the high-performance silicone-acrylate-modified water-based epoxy emulsion provided by the invention by taking mixed modified amine as a curing agent. The emulsion has the advantages of easy and convenient production process, saving in energy, environmental friendliness, easiness for coating construction, low sensitivity to water vapor and temperature, extremely high substrate adhesion, high corrosion resistance, high chemical stability and wide formula adjusting range.
Owner:IANGSU JINLING SPECIAL PAINT CO LTD

Preparation process of composite copper powder catalyst

The invention provides a preparation process of a composite copper powder catalyst, comprising the steps of cutting an electroplating copper plate into a copper block and machining into copper scales; grinding the copper scales into sheet-shaped copper powder; obtaining sheet pure copper powder through a magnetic selection and air flow grading technology; smelting and atomizing a copper-tin-zinc alloy to prepare needed copper-tin-zinc alloy powder; drying and screening, and grinding to obtain scale-shaped copper-tin-zinc alloy powder; magnetically selecting and screening to obtain the needed copper-tin-zinc alloy powder; and mixing the sheet pure copper powder with the copper-tin-zinc alloy powder according to a ratio to obtain the needed composite copper powder catalyst. According to the preparation process of the composite copper powder catalyst, elements which are harmful to an environment are not introduced in a whole process, the quality stability of a product is good, concave-convex defects of the surface of powder grains are more and the specific surface is large; the catalysis property of the composite copper powder catalyst is obviously better than that of common composite copper powder so that the effect of an organic silicon monomer synthesized metal catalyzing system is improved, the time-space yield of an organic silicon monomer synthesized fluidized bed is increased, a synthesis reaction period is prolonged, the selectivity is improved, the cost is reduced and good economic benefits are created.
Owner:湖南省天心博力科技有限公司

BIM (building information modeling) combined utility tunnel intersection prefabricated component optimization method

The invention relates to a BIM (building information modeling) combined utility tunnel intersection prefabricated component optimization method. The method includes steps: (1) adopting a BIM technique for modeling of a tunnel body and each functional node; (2) implementing dynamic monitoring on pipelines entering a tunnel according to modeling information, calculating structural dimensions required by communication of upper and lower chamber pipelines of main and branch utility tunnel intersections on the basis of information of the pipelines entering the tunnel, and analyzing and demonstrating calculated dimension information; (3) analyzing and demonstrating the calculated dimension information, and performing special secondary design of medium plate prefabricated components on the basis of the demonstrated dimension information; (4) prefabricating, namely manufacturing utility tunnel intersection prefabricated components according to secondary design results, and designing an integral utility tunnel intersection layout. The method has advantages of flexibility in mounting timeliness, convenience and quickness in component demounting and replacement and high integrating degree in long-term pipeline planning and capacity increasing.
Owner:XIDI (SUZHOU) SURVEY & DESIGN CONSULTING CO LTD

Automatic chamfering machine

The invention discloses an automatic chamfering machine. The chamfering machine comprises an engine base (1), a conveying mechanism (3), four sand wheel chamfering mechanisms (4) and a guide rail clamping mechanism (5), wherein the conveying mechanism (3) is arranged at one end of the engine base (1) and is used for conveying a work-piece (2), the four sand wheel chamfering mechanisms (4) are arranged on the engine base (1) and simultaneously chamfer the two groups of long opposite sides (2.1) of the workpiece (1), and the guide rail clamping mechanism (5) is used for clamping and smoothly moving the clamped work-piece (2) and is arranged on the working table (1.1) of the engine base (1); two of the sand wheel chamfering mechanisms (4) are respectively located at one group of long opposite sides (2.1) used for processing the work-piece (2) at the two sides of the guide rail clamping mechanism (5) in parallel, and the other two sand wheel chamfering mechanisms (4) are respectively located at the other group of long opposite sides (2.1) used for processing the work-piece (2) at the two sides of the guide rail clamping mechanism (5) in parallel. The automatic chamfering machine is not manually operated, can simultaneously chamfer the two groups of long opposite sides of the work-piece, and can continuously work for a long time segment, and has the advantages of good chamfering quality and high efficiency.
Owner:宁波市鄞州启威机械科技有限公司

One-step preparation method of POY/POY combined yarn and device

The invention discloses a one-step preparation method of POY / POY combined yarns and device. The method includes the steps: spinning is carried out with a first spinning assembly using first spinning liquid; spinning is carried out with a second spinning assembly using second spinning liquid; yarns spun through the first spinning assembly and the second spinning assembly pass through lower yarn guide plates of yarn paths respectively, then are combined on an upper yarn guide plate, and then sequentially pass a wire stitching machine and a winding roller to obtain the POY / POY combined yarns. Improvement is made on the basis of an existing production device preparing combined yarns of pre-oriented yarns and fully drawn yarns in a one-step method, the improvement is easy and convenient, compared with the conventional combined yarns of the pre-oriented yarns and the fully drawn yarns, the POY / POY combined yarns prepared in the one-step method are soft in handfeel, materials are various, spinning is flexible, production efficiency is high, the technological process is short, energy consumption and material consumption are low, fixed length and fixed weight are achieved, product quality stability is good, and the POY / POY combined yarns prepared in the one-step method can be directly used for weaving, the combined yarns with different sections, different fineness and different constituents can be prepared, and the combined yarns can be used for simulation fabric or functional products.
Owner:DONGHUA UNIV +1

Preparation method of polyisobutene with low molecular weight and high activity

ActiveCN102603950AMolecular weight is easy to control and stableActivity is easy to control and stableDouble bondHigh activity
The invention discloses a preparation method of polyisobutene with low molecular weight and high activity. The method comprises the following steps of: continuously adding a raw material with isobutylene content of 40-90wt% into a polymer reactor, and simultaneously adding a catalyst A and a catalyst B from the two inlets of the polymer reactor to perform polymerization reaction; terminating the obtained polymer material by a terminator; performing tertiary countercurrent washing and then removing the unreacted C4 component by a climbing-film evaporator; further removing the unreacted C4 component in a falling-film evaporator; and finally removing low polymer through vacuum distillation to obtain high-activity polyisobutene with number-average molecular weight of 500-5,000, wherein the content of alpha-terminal double bonds is greater than or equal to 80% by mole, the maximum isobutylene conversion rate can reach 85%, and the molecular weight distribution is narrow. The method disclosed by the invention is simple and reasonable in polymerization technology; and due to the mode of continuously adding catalysts at different positions, the reaction conditions are relatively mild, the polymerization occurrence possibility is low, the reaction conditions are easy to control, and the quality stability is good.
Owner:SHANDONG HONGRUI NEW MATERIAL TECH

Black prepared lateral root of aconite extracting solution and shenfu injection obtained by adopting real-time release method in automatic black prepared lateral root of aconite extracting process

The invention discloses a black prepared lateral root of aconite extracting solution and shenfu injection obtained by adopting a real-time release method in the automatic black prepared lateral root of aconite extracting process, and relates to the field of traditional Chinese medicine injection production testing. The real-time release method in the automatic black prepared lateral root of aconite extracting process comprises the steps of collecting and detecting the alkaloid content and a chromatographic fingerprint spectrum of a black prepared lateral root of aconite raw material sample; preparing acid volume extraction according to the alkaloid content of black prepared lateral root of aconite raw materials, and adopting an ultrafiltration membrane for removing impurities to obtain theblack prepared lateral root of aconite extracting solution; performing online collecting and detecting on the alkaloid content and the chromatographic fingerprint spectrum of the black prepared lateral root of aconite extracting solution sample; according to the alkaloid content of the black prepared lateral root of aconite extracting solution, black prepared lateral root of aconite extracting technological parameters are adjusted. Due to the fact that different raw materials correspond to different technological parameters, the stable effective ingredient is obtained, the batched stability and safety for reducing toxicity and increasing effect of the black prepared lateral root of aconite are improved, meanwhile, application of a poisonous and harmful reagents is lowered, the product quality stability of the obtained black prepared lateral root of aconite extracting solution and shenfu injection is good, and the clinic pharmaceutical safety and effectiveness are high.
Owner:YAAN THREE NINE PHARMA

Method for producing multicolor section color yarn and drawing frame device

The invention discloses a method for producing multicolor section color yarn. Main color rough yarn and secondary color rough yarn are adopted to be spun on a three-roller ring spinning section color yarn spinning frame, so that the multicolor section color yarn is obtained. The main color rough yarn is continuously fed in from a middle-roller horn mouth, the secondary color rough yarn is continuously fed in from a rear-roller horn mouth, pre-drawing strips with two or more colors are adopted for the secondary color rough yarn and fed into a cotton-feed roller of a drawing frame in parallel when the drawing procedure is carried out for combination, pre-drawing strips of the same color are concentrated and fed into the cotton-feed roller of the drawing frame in parallel, then the yarn roughing procedure is carried out on the pre-drawing strips, and accordingly the single multicolor secondary color rough yarn is formed. A traditional three-roller ring spinning section color yarn spinning frame is adopted in the method, multicolor section color yarn products with different effects can be produced without the need of improving spinning equipment any more, industrialization and mass production of the multicolor section color yarn products can be achieved through the production method, and cost of manpower and material resources is saved.
Owner:ZHEJIANG HUAFU COLOR TEXTILE

Pd-MoS2 heterojunction photovoltaic solar cell device and preparation method thereof

The invention discloses a Pd-MoS2 heterojunction photovoltaic solar cell device. The Pd-MoS2 heterojunction photovoltaic solar cell device is of a layered structure and sequentially comprises a Pd metal front electrode, a Pd-MoS2 thin film layer, a first SiO2 insulation buffer layer, a Si monocrystal substrate, a second SiO insulation buffer layer and a metal In back electrode from top to bottom. The preparation method mainly adopts a DC magnetron sputtering technique and comprises the following steps of: bombarding the surface of a Pd-MoS2 target with high-energy electrons so that a large amount of ions are sputtered; depositing a thin film on the surface of the Si monocrystal substrate subjected to passivation treatment; and preparing front electrode and back electrode layers and completing. The open-circuit voltage, the short-circuit current density and the light conversion efficiency of the Pd-MoS2 heterojunction photovoltaic solar cell device disclosed by the invention are respectively improved by over 60%, 160% and 300% compared with the similar products in the prior art. The Pd-MoS2 heterojunction photovoltaic solar cell device disclosed by the invention has the advantages of simplicity in process, greenness and environment protection on the production process and a product, high finished product rate and low manufacturing cost, and is suitable for industrial production at a large scale.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
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