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34results about How to "Reduced Blooming" patented technology

Low voc hard surface treating composition providing anti-fogging and cleaning benefits

A multi-functional hard surface treating composition is described which includes (1) a surfactant system including at least two surfactants and (2) at least one alkylene glycol alkyl ether. The at least two surfactants include an anionic surfactant and either a polymer surfactant or a nonionic surfactant. The surfactant system and alkylene glycol alkyl ether have a synergistic effect to provide anti-fogging, anti-streaking, and cleaning benefits to a hard surface treated with the composition.
Owner:SC JOHNSON & SON INC

Foam dressing containing composite silver-zinc antibacterial material and preparation method of foam dressing

The invention provides a foam dressing containing a composite silver-zinc antibacterial material and a preparation method of the foam dressing. The foam dressing containing the composite silver-zinc antibacterial material comprises polyurethane foaming plastic and the composite silver-zinc antibacterial material, wherein the composite silver-zinc antibacterial material is adhered to the inside of the polyurethane foaming plastic, comprises the following raw materials in content: nano silver, nano zinc and a nano inorganic carrier; and the composite silver-zinc antibacterial material contains the following raw materials in percentage by mass: 10%-20% of silver and 20%-40% of zinc. The composite silver-zinc antibacterial material is dispersed into the foam dressing in a manner of foam molding or ultrasonic dipping together with foam. The foam dressing containing the composite silver-zinc antibacterial material is capable of effectively absorbing diffusate of the wound surface, and effectively inhibiting growth and breeding of staphylococcus aureus, pseudomonas aeruginosa and candida albicans.
Owner:SHENZHEN TSINGHUA YUANXING NANO MATERIAL CO LTD

Polyethylene compositions having reduced plate out, and films made therefrom having reduced blooming

InactiveUS20130225738A1Reduced plateReduced BloomingPropionatePentaerythritol
The instant invention provides polyethylene compositions having reduced plate out, and films made therefrom having reduced blooming. The polyethylene composition suitable for film applications according to the present invention comprises the melt blending product of: (a) an ethylene based polymer; (b) a first antioxidant system comprising one or more antioxidants selected from the group consisting of Octadecyl-3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionate; Pentaerythritol Tetrakis (3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate); and combinations thereof; (c) a second antioxidant system comprising a liquid phosphite corresponding to the formula [4-(2-methylbutan-2-yl)phenyl]x[2,4-bis(2-methylbutan-2-yl)phenyl]3-x phosphate, wherein x=0, 1, 2, 3, or combinations thereof; and (d) optionally one or more neutralizing agents.
Owner:DOW GLOBAL TECH LLC

Special compound microorganism fish fertilizer for carp and preparation method thereof

The invention discloses a special compound microorganism fish fertilizer for carp and a preparation method thereof. The special compound microorganism fish fertilizer comprises the following components by weight: 2 to 4 parts of nitrogen-fixing bacteria, 1 to 3 parts of phosphate solubilizing bacteria, 3 to 5 parts of ferment bacteria, 50 to 60 parts of fish meal, 75 to 80 parts of a soybean cake, 20 to 30 parts of wheat bran, 70 to 80 parts of rice bran, 10 to 14 parts of brown sugar, 8 to 10 parts of yeast powder, 12 to 15 parts of salt, 80 to 85 parts of chicken manure, 60 to 65 parts of waterweed, 10 to 13 parts of calcium hydroxide, 15 to 20 parts of urea, 3 to 5 parts of potassium sulfate, 3 to 5 parts of ferric citrate, 0.2 to 0.4 part of vitamin B1, 0.1 to 0.3 part of vitamin B12, 1 to 4 parts of baical skullcap root, 3 to 5 parts of isatis root and 4 to 6 parts of liquorice. The compound microorganism fish fertilizer provided by the invention can promote rapid growth of fish, improve quality and quantity of fish, reduce fish diseases and allows beneficial microorganisms in water to be increased and growth of algae in a fishpond to be retarded.
Owner:苏州市阳澄湖现代农业发展有限公司

Finish-coat paint for real stone paint and preparation method of finish-coat paint

The invention relates to finish-coat paint for real stone paint, wherein the finish-coat paint is prepared from the following components in parts by weight: water, a germicidal and anti-corrosion agent, bentonite, an aqueous solution of 2-amino-2-methyl-1-propanol with mass concentration of 90-95%, a defoamer, a dispersant, a wetting agent, a lotus leaf hydrophobing agent, lotus-leaf-effect organosilicone hydrophobic emulsion, a coalescing agent, a cosolvent, the defoamer, a thickening agent and a rheological auxiliary. The finish-coat paint for the real stone paint overcomes the defects that the existing finish-coat paint for the real stone paint is poor in stain resisting effect and is free from self-cleaning ability, and has the advantages that excellent hydrophobicity, excellent stain resistance and a photocatalystic self-cleaning function are achieved, and the service life of the real stone paint can be prolonged.
Owner:SKSHU PAINT

Application of bipyridine ester phosphite to PVC heat stabilizer

ActiveCN106046618AExcellent resistance to precipitationAuxiliary Stabilization ImprovementNitrogen atomEther
The invention relates to the application of bipyridine ester phosphite to a PVC heat stabilizer. bipyridine ester phosphite can be applied to preparation of a liquid barium-zinc stabilizer, a liquid barium-cadmium-zinc stabilizer and a liquid calcium-zinc stabilizer. The liquid barium-zinc stabilizer is prepared from, by weight, 40-50 parts of barium isotanoate, 10-15 parts of zinc-based complex, 5-10 parts of bipyridine ester phosphite, 2-7 parts of 2-ethyl acetyl benzoyl methane, 1-10 parts of thiodipropionicacid dilauryl ester and 10-20 parts of tripropylene glycol n-butyl ether. The bipyridine ester phosphite compound has a higher anti-precipitation property than aliphatic or aromatic phosphite ester by means of a novel heterocyclic perssad replacing the aliphatic or aromatic perssad during preparation of the liquid barium-zinc stabilizer, the liquid barium-cadmium-zinc stabilizer and the liquid calcium-zinc stabilizer. By introducing nitrogen atoms to the heterocyclic ring, the auxiliary stabilization effect on phosphite ester is improved remarkably, and then the printing performance and stability of a modified PVC product are improved.
Owner:ZHEJIANG HIMPTON NEW MATERIAL

Semi-steel meridian tire sidewall rubber composition and preparation method thereof

The invention belongs to the technical field of rubber tires and chemical engineering manufacturing, and concretely relates to a liquid isoprene rubber-containing semi-steel meridian tire sidewall rubber composition and a preparation method thereof. The tire sidewall rubber composition comprises, by weight, 30-50 parts of natural rubber, 40-60 parts of butadiene rubber, 10-20 parts of liquid isoprene rubber, 52-56 parts of carbon black, 4.6-5.7 parts of an activator, 3.7-4.2 parts of an antioxidant, 1.8-2.5 parts of protection wax, 2-4 parts of a homogenizing agent, 0.7-1.0 part of a promoter and 1.76-1.8 parts of sulfur. The liquid isoprene rubber is used in semi-steel tire sidewalls, and rubber processing oil in traditional formulas is eliminated, so the problems of visual pollution and color change of tires, caused by migration and precipitation of the rubber processing oil from the surfaces of the tires in the late stage are solved, thereby the visual brightness of the tires is improved; and the use of the liquid isoprene rubber makes produced tires be better than tires produced by using the rubber processing oil in tire sidewall deflection heating reduction, tear resistance, cold resistance and ageing resistance.
Owner:山东新大陆橡胶科技有限公司

High molecular weight processing modifier for polyvinyl chloride low-foaming pipe

The invention relates to high molecular processing modifier used in a polyvinyl chloride low foaming tube, which is characterized in that: the total weight of polymeric monomer is calculated as 100 percent, which comprises 12-72 percent of methyl methacrylate, 21-66 percent of styrene and 7-22 percent of acrylonitrile. Chain extender is added into the compositions to carry out emulsion polymerization in redox system. The invention is characterized in that: the invention can improve plasticizing and the plasticizing can become more even, can improve melt strength to promote extending property, can improve surface quality to reduce melting pulsation and increase surface gloss and can improve processing property to reduce blooming and crazing, decrease the foaming density of the product and increase elongation and pulling speed. Because of higher relative molecular mass, the invention can greatly improve the melt strength. The invention is used for producing PVC foaming products which have dense and even stomata structure and lower density.
Owner:SHANDONG RUIFENG CHEM

Tilapia and scylla serrata polyculture method

The invention relates to a tilapia and scylla serrata polyculture method which comprises the steps that a pond with unobstructed intake and drainage channels, matched electric power and complete oxygenation facilities is selected and disinfected thoroughly and wholly; then tilapia fry are put in; scylla serrata are put in after 30 days; tilapia complete formula feed is fed two times per day; water body disinfection is performed by quick lime every other 15-20 days in a culture process; water quality regulation is performed by a biological agent; the scylla serrata are subjected to crab pot catch rotation after cultured for 2-3 months; and the pond is dried, and tilapia is caught after cultured for 6 months. According to the method, a unique feasible technical operation route is adopted; the tilapia and the scylla serrata are collocated reasonably due to the life habit and food habit characteristics; a culture water environment is fully exerted; a bait utilization ratio is increased; a bottom environment is improved effectively; mass breeding of harmful microorganisms is reduced; the incidence is reduced; survival rates are increased obviously compared with monoculture; yield increasing and efficiency increasing are achieved; and the method is an efficient, environment-friendly and healthy culture model.
Owner:HAINAN ACADEMY OF OCEAN & FISHERIES SCI

Propylene impact copolymers having good optical properties

Propylene impact copolymers (ICPs) are provided which comprise: (a) a matrix phase which comprises from 60 to 95 weight % of a polypropylene polymer containing from 0 to 6 mole % of units derived from one or more alpha-olefins other than propylene, and (b) a dispersed phase which comprises from 5 to 40 weight % of a copolymer derived from a first comonomer which can be either propylene or ethylene together with a second alpha-olefin comonomer. The ICP is further characterized by having a beta / alpha ratio less than or equal to 1.1. The ICPs of the present invention are particularly well suited for applications requiring clear, tough polymers such as thin walled injection molded articles for frozen food packaging applications.
Owner:BRASKEM AMERICA

Paper feeding roll with non-bloomed surface

The invention discloses a paper feeding roll with a non-bloomed surface, which consists of a plastic framework and a rubber roll or sleeve sleeved on the plastic framework, wherein the rubber roll or sleeve is made of a rubber composition which comprises high-wear resistance rubber, a non-bloomed rubber vulcanization system applicable to cis-polybutadiene, natural rubber or the composition of the cis-polybutadiene and the natural rubber, and more than one antioxidant. The paper feeding roll has the advantages that: the two selected kinds of rubber, namely the cis-polybutadiene and the natural rubber, have high wear resistance and the compatibility of the two kinds of rubber are very high; through combination and dose control, the rubber vulcanization system can be consumed in a vulcanization reaction as fully as possible so as to fully vulcanize the rubber roll of the paper feeding roll without being sprayed out from the surface of the rubber due to over dose; and the dose of anti-aging agents is reduced as much as possible, and the ratio of the two kinds of anti-aging agents are regulated to further reduce the blooming of the rubber sleeve on the premise of maintaining the aging performance of the rubber sleeve.
Owner:BEIJING LASER HI TECH CO LTD

Colorful rubber composition for tire sidewall and preparation method of colorful rubber composition

InactiveCN106349583AIncrease blend speedIncrease shear ratePolymer scienceTitanium
The invention belongs to the technical fields of rubber tires and chemical manufacturing, and relates to a colorful rubber composition for a tire sidewall and a preparation method of the colorful rubber composition. The colorful rubber composition for the tire sidewall is prepared from the following raw material ingredients in parts by weight: 30-40 parts of natural rubber, 10-20 parts of ethylene propylene terpolymer, 45-55 parts of chlorinated butyl rubber, 1-2 parts of tackifying resin, 1.5-2.5 parts of an activating agent without carbon black, 1-2 parts of a dispersant, 0.5-1 part of a no-pollution anti-aging agent, 25-30 parts of kaolin, 30-40 parts of titanium pigment, 19-24 parts of a coloring agent, 1-1.5 parts of an accelerant, 0.4-1 part of sulphur and 0.1 part of an anti-scorching agent. In combination with a three-phase mixing process in the preparation process, the problems of low flexing resistance, low aging resistance and high color fading possibility of a colorful rubber tire sidewall in the prior art are solved. The rubber composition not only meets the requirements of tire sidewall rubber for high flexing resistance and high aging resistance, but also meets the aesthetic vision for a user to modify tire appearance.
Owner:山东新大陆橡胶科技有限公司

Low voc hard surface treating composition providing anti-fogging and cleaning benefits

A multi-functional hard surface treating composition is described which includes (1) a surfactant system including at least two surfactants and (2) at least one alkylene glycol alkyl ether. The at least two surfactants include an anionic surfactant and either a polymer surfactant or a nonionic surfactant. The surfactant system and alkylene glycol alkyl ether have a synergistic effect to provide anti-fogging, anti-streaking, and cleaning benefits to a hard surface treated with the composition.
Owner:SC JOHNSON & SON INC

Insulating-layer semiconductive shielding material for ethylene propylene rubber cable

The invention discloses an insulating-layer semiconductive shielding material for an ethylene propylene rubber cable. The material is characterized by being prepared from, by weight, 60-70 parts of nitrile butadiene rubber, 30-40 parts of chlorinated polyethylene, 30-50 parts of cable powder, 50-70 parts of conductive carbon black A, 10-30 parts of conductive carbon black B, 5-10 parts of magnesium oxide, 2-4 parts of paraffin, 2-8 parts of anti-aging agents, 20-30 parts of dioctyl phthalate, 0.5-1 part of dispersants, 2-5 parts of stearic acid and 1-8 parts of vulcanizing agents. The insulating-layer semiconductive shielding material for the ethylene propylene rubber cable has the advantages of good heat oxygen aging resistance, ozone aging resistance, acid-base resistance and chemical resistance performance, excellent oil resistance performance, good removability and glue liquidity, low cost and the like.
Owner:山东太平洋橡缆股份有限公司

Propylene impact copolymers having good optical properties

Propylene impact copolymers (ICPs) are provided which comprise: (a) a matrix phase which comprises from 60 to 95 weight % of a polypropylene polymer containing from 0 to 6 mole % of units derived from one or more alpha-olefins other than propylene, and (b) a dispersed phase which comprises from 5 to 40 weight % of a copolymer derived from a first comonomer which can be either propylene or ethylene together with a second alpha-olefin comonomer. The ICP is further characterized by having a beta / alpha ratio less than or equal to 1.1. The ICPs of the present invention are particularly well suited for applications requiring clear, tough polymers such as thin walled injection molded articles for frozen food packaging applications.
Owner:BRASKEM AMERICA

Environment-friendly interior wall coating free of floating during application and preparation method of environment-friendly interior wall coating

The invention discloses an environment-friendly interior wall coating without floating during application and a preparation method thereof, and the environment-friendly interior wall coating comprises the following components in percentage by mass: 21.2-37.8% of water, 0.2-0.7% of a powdery thickening agent, 0.1-0.4% of a bactericide, 0.4-0.8% of a dispersing agent, 0.1-0.4% of a wetting agent, 0.2-0.7% of a defoaming agent, 0.1-0.3% of a pH value regulator, 2-20% of titanium dioxide, 3-12% of kaolin, 10-32% of heavy calcium powder, 1-5% of a functional filler, 0.2-0.6% of a functional additive A and 0.5-2.5% of a functional additive B, the coating comprises the following components in percentage by weight: 8-38% of an acrylate emulsion, 0.2-0.7% of a thickening agent A and 0.2-0.7% of a thickening agent B. According to the invention, the freeze-thaw resisting agent, the odor-removing emulsion and KOH are added to replace ethylene glycol, propylene glycol, inorganic ammonia or organic ammonia and a coalescing agent in a traditional formula, so that the content and odor of volatile organic compounds in the coating are reduced; the powdery thickening agent, the sericite and the sodium bentonite form a layered structure, so that the water-retaining property of the coating is improved, the drying time of a paint film is prolonged, so that the paint film has enough time to be uniformly rolled and brushed to reduce the floating phenomenon, and the freeze-thaw resistant agent prolongs the drying time of the paint film and further prolongs the drying time of the paint film to reduce the floating phenomenon.
Owner:DRAGON BRAND COATINGS (BEIJING) CO LTD

Marine mechanical high elastic coupler rubber and vulcanization preparation method thereof

InactiveCN108948447AGood vibration reduction effectGood consistency of mechanical propertiesVulcanizationWear resistant
The invention relates to a manufacturing process of a high-elastic coupler, in particular to marine mechanical high-elastic coupler rubber and a vulcanization preparation method thereof, and mainly solves the technical problems that the vulcanization process method existing in the prior art has low vulcanization degree, low comprehensive vibration damping performance, poor high temperature resistance, poor fatigue resistance, poor weather resistance, poor rubber mechanical properties, incapability of mass production and processing, and the like. The marine mechanical high-elastic coupler rubber comprises 90-110 parts by weight of natural rubber, 4-6 parts by weight of zinc oxide, 0.5-2 parts by weight of stearic acid, 10-35 parts by weight of high wear-resistant carbon black, 20-45 parts by weight of universal carbon black, 0-6 parts by weight of white carbon black, 1-2 parts by weight of sulfur, 1-2 parts by weight of an accelerator, 2-4 parts by weight of an anti-aging agent, 0.1-1 part by weight of a a scorch retarder, 0.5-2 parts by weight of a dispersing agent and 0-10 parts by weight of a softener, and can be obtained by first vulcanization by hot air, second vulcanization bypressurization, and third vulcanization at room temperature.
Owner:HANGZHOU ADVANCE COUPLING

Environment-friendly rotor spinning machine

The invention belongs to the technical field of spinning machines, and particularly relates to an environment-friendly rotor spinning machine which comprises a mounting plate, a spinning nozzle is fixedly mounted above the mounting plate, and uniformly distributed feeding rollers are rotatably mounted on the outer surface of the mounting plate; a horn mouth is fixedly mounted at the bottom of the mounting plate; a cradle is rotationally mounted at the bottom of the mounting plate and is not in contact with the horn mouth; leather rollers which are uniformly distributed are rotationally mounted on the outer surface of the cradle; a cleaning plate is fixedly mounted on the outer surface of the mounting plate; a column groove is formed in the cleaning plate, and an adhesion roller is rotationally connected into the column groove. Cleaning pieces which are uniformly distributed are adhered to the outer wall of the adhesion roller and are in contact with the outer wall of the feeding roller; a collecting piece is arranged in the cleaning plate and used for collecting velvet flowers adhering to the adhering roller. The feeding roller is simple in structure, and can solve the technical problems that cotton accumulation is generated on the outer surface of the feeding roller during spinning, and then thick and thin yarn faults appear on yarns after raw materials are formed into yarns.
Owner:巢湖市春维纺织有限公司

Efficient curing transfer printing digital roller printing process and equipment

The invention belongs to the technical field of digital printing, and relates to an efficient curing transfer printing digital roller printing process. The process comprises the following steps of spraying antistatic release ink on a printing roller according to a set position, and carrying out pre-light curing treatment; carrying out preheating treatment on a base material; feeding the preheated base material between the printing roller and a pressing roller, and transferring the antistatic release ink subjected to pre-light curing to the base material through imprinting. The invention further provides efficient curing transfer printing digital roller printing equipment aiming at the process. The equipment comprises the printing roller and the pressing roller, a pressing gap is formed between the printing roller and the pressing roller, a printing ink spray head is arranged above the printing roller, an ultraviolet irradiation device is arranged on a path of one side, turning to the pressing roller, of the printing roller, and a heating device is arranged in the pressing roller. The printing ink is pre-cured in the rapid transfer printing process, so that the printing cleaning accuracy is ensured, and the blooming is reduced.
Owner:浙江英赛德数码科技有限公司

Tilapia and scylla serrata polyculture method

The invention relates to a tilapia and scylla serrata polyculture method which comprises the steps that a pond with unobstructed intake and drainage channels, matched electric power and complete oxygenation facilities is selected and disinfected thoroughly and wholly; then tilapia fry are put in; scylla serrata are put in after 30 days; tilapia complete formula feed is fed two times per day; water body disinfection is performed by quick lime every other 15-20 days in a culture process; water quality regulation is performed by a biological agent; the scylla serrata are subjected to crab pot catch rotation after cultured for 2-3 months; and the pond is dried, and tilapia is caught after cultured for 6 months. According to the method, a unique feasible technical operation route is adopted; the tilapia and the scylla serrata are collocated reasonably due to the life habit and food habit characteristics; a culture water environment is fully exerted; a bait utilization ratio is increased; a bottom environment is improved effectively; mass breeding of harmful microorganisms is reduced; the incidence is reduced; survival rates are increased obviously compared with monoculture; yield increasing and efficiency increasing are achieved; and the method is an efficient, environment-friendly and healthy culture model.
Owner:HAINAN ACADEMY OF OCEAN & FISHERIES SCI

Polyculture method of Scylla serrata and perches

The invention discloses a polyculture method of Scylla serrata and perches, comprising cleaning mud in a pond that uses mixed silt as a base, has smooth water access ditches and has water exchange equipment and aerating equipment, subjecting a pond dike to leak-proof reinforcement, disinfecting, planting algae at the bottom of the pond, setting layers of wire mesh at the bottom, stocking Scylla serrata in the wire mesh, stocking perches above the wire mesh, feeding the upper perches with common perch feed while the lower crabs of Scylla serrata are not specially fed with feed, disinfecting thepond with quick lime at intervals of 15-20 days during culturing, discharging lime water, and re-injecting filtered sea water. The polyculture method of Scylla serrata and perches makes use of livinghabits and preying features of perches and Scylla serrata, the bottom environment is effectively improved, and disease attack chances are decreased; culturing cost is lowered, and Scylla serrata is provided with higher survival rate and better condition.
Owner:钦州市钦州港国鸿水产养殖专业合作社

Pickle wastewater resourceful treatment method

The invention provides a pickle wastewater resourceful treatment method which comprises the following steps: sending pickle wastewater to a multi-stage membrane filtration system, and intercepting large-particle suspended solids and small-particle suspended solids in the pickle wastewater in a stepped manner; conveying the pickle wastewater subjected to multi-stage membrane filtration treatment to a sterilization system so that a large number of microorganisms are prevented from breeding in the pickle wastewater; sending the sterilized pickle wastewater to a membrane concentration desalination system to produce strong brine and desalted water; reusing the strong brine subjected to membrane concentration desalination treatment for the pickle pickling process, and conveying the desalted water to a biochemical treatment system and discharging after being treated to reach the standard. According to the pickle wastewater resourceful treatment method, sodium chloride can be effectively recycled, microbial reproduction is reduced in a multi-stage membrane filtration and sterilization mode, the membrane pollution problem is effectively solved, the food industry safety problem caused by addition of chemical agents is avoided, and resourceful treatment of sodium chloride in pickle wastewater is achieved.
Owner:SUZHOU JUZHI TONGCHUANG ENVIRONMENTAL PROTECTION TECH

Foam dressing containing composite silver-zinc antibacterial material and preparation method thereof

The invention provides a foam dressing containing a composite silver-zinc antibacterial material and a preparation method of the foam dressing. The foam dressing containing the composite silver-zinc antibacterial material comprises polyurethane foaming plastic and the composite silver-zinc antibacterial material, wherein the composite silver-zinc antibacterial material is adhered to the inside of the polyurethane foaming plastic, comprises the following raw materials in content: nano silver, nano zinc and a nano inorganic carrier; and the composite silver-zinc antibacterial material contains the following raw materials in percentage by mass: 10%-20% of silver and 20%-40% of zinc. The composite silver-zinc antibacterial material is dispersed into the foam dressing in a manner of foam molding or ultrasonic dipping together with foam. The foam dressing containing the composite silver-zinc antibacterial material is capable of effectively absorbing diffusate of the wound surface, and effectively inhibiting growth and breeding of staphylococcus aureus, pseudomonas aeruginosa and candida albicans.
Owner:SHENZHEN TSINGHUA YUANXING NANO MATERIAL CO LTD

Hydrocarbon Wax Composition, Method for the Production Thereof and Use Thereof as Additive in Rubber

ActiveUS20180230307A1Low bloomingExcellent ozone resistanceHydrocarbonCarbon atom
The invention relates to a hydrocarbon wax composition with superior properties as ozone- and aging-protecting additive in rubber products, the production thereof and the use thereof as ozone- and aging-protecting additive. The hydrocarbon wax composition is characterized by its distribution of hydrocarbon molecules by number of carbon atoms per hydrocarbon molecule and its distribution of branched and linear hydrocarbons.
Owner:SASOL WAX GMBH

Desorption electrospray ionization mass spectrometry system and mass spectrometry detection method

The present disclosure provides a desorption electrospray ionization mass spectrometry system, comprising: a translation assembly configured to translate in a horizontal direction and suitable for placing a sample to be subjected to mass spectrometry detection; the desorption electrospray ion source comprises a spray needle and is suitable for spraying ions to the sample; the flow guide plate is arranged between the translation assembly and the spray needle, a flow guide hole is formed in the flow guide plate, and the flow guide hole is located in the range of ion spray formed by ions sprayed by the spray needle and is suitable for intercepting part of ions and guiding the other part of ions to the projection position, opposite to the flow guide hole, of the sample. The invention also provides a mass spectrometry method which comprises the following steps: adjusting the relative positions of the flow guide plate, the spray needle and the translation assembly, and keeping the flow guide hole at a target position; and controlling the mass spectrometer, the translation assembly and the flow valve to periodically start according to the time sequence signal, so as to gradually sample the sample until the mass spectrometric detection of the sample is completed.
Owner:UNIV OF SCI & TECH OF CHINA

Paper feeding roll with non-bloomed surface

The invention discloses a paper feeding roll with a non-bloomed surface, which consists of a plastic framework and a rubber roll or sleeve sleeved on the plastic framework, wherein the rubber roll or sleeve is made of a rubber composition which comprises high-wear resistance rubber, a non-bloomed rubber vulcanization system applicable to cis-polybutadiene, natural rubber or the composition of the cis-polybutadiene and the natural rubber, and more than one antioxidant. The paper feeding roll has the advantages that: the two selected kinds of rubber, namely the cis-polybutadiene and the natural rubber, have high wear resistance and the compatibility of the two kinds of rubber are very high; through combination and dose control, the rubber vulcanization system can be consumed in a vulcanization reaction as fully as possible so as to fully vulcanize the rubber roll of the paper feeding roll without being sprayed out from the surface of the rubber due to over dose; and the dose of anti-aging agents is reduced as much as possible, and the ratio of the two kinds of anti-aging agents are regulated to further reduce the blooming of the rubber sleeve on the premise of maintaining the aging performance of the rubber sleeve.
Owner:BEIJING LASER HI TECH CO LTD
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