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34results about How to "Healthy friendly" patented technology
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Method for preparing organosilicon modified paper sheet humidifying strong agent
InactiveCN101302731AImprove wet strengthImprove surface water resistanceReinforcing agents additionCross-linkEpoxy
The invention discloses a preparation method of a paper wet strengthening agent that is modified by organic silicon, which comprises the following steps: firstly combines the raw materials of dibasic acid and polyhydric amine into a polyamine intermediate compound of daiamid. A certain amount of the polyamine intermediate compound of daiamid, epoxy chloropropane and an organosilane coupling agent are taken to react under certain temperature so as to achieve certain viscosity, and the reaction is halted by adding acid, thus obtaining the paper wet strengthening agent that is modified by organic silicon. The preparation method of the paper wet strengthening agent that is modified by organic silicon can reduce the usage of the epoxy chloropropane and lower the organic chlorine content in discharged substances; the cross-linked product greatly increases molecular weight and active crosslinking points of molecular chain sections. The product of the paper wet strengthening agent that is modified by organic silicon achieves greatly raised retention degree, can improve not only the wet strength of paper but also the paper physical performance such as folding resistance, tensile strength and dry strength, etc., and the superficial water-proof performance of paper can be greatly raised if the paper wet strengthening agent is coated on the surface of paper.
Owner:SHAANXI UNIV OF SCI & TECH
Quick and intelligent defective optical lens detection device and method
ActiveCN104777172AImprove detection efficiencyRealize batch detectionOptically investigating flaws/contaminationCamera lensLiquid-crystal display
The invention discloses a quick and intelligent defective optical lens detection device and method. The detection device comprises a camera, an image analysis unit and a liquid crystal display panel which are sequentially connected. The method includes the following detection steps that optical lenses to be detected are placed on the liquid crystal display panel and background light of the liquid crystal display panel enters a camera head of the camera through the optical lenses; acquired images are output to the image analysis unit through the camera and segmented through the image analysis unit, and therefore sub-images corresponding to all the lenses are acquired; the image analysis unit compares the sub-images with a standard image corresponding to a standard lens for identification, and identification results indicating whether the lenses are defective or not are acquired and reflected through colors in the regions, corresponding to the lenses, on the liquid crystal display panel. By the adoption of the device and method, batch detection can be achieved, detection efficiency is high, and the results are objective and accurate.
Owner:CHONGQING UNIV OF TECH
Solvent-free high-temperature resistant coating for high temperature protection on warship components
InactiveCN104419321ANot subject to high temperature corrosionReasonable strengthAnti-corrosive paintsSolvent freeUltraviolet
The invention discloses a solvent-free high-temperature resistant coating for high temperature protection on warship components. The solvent-free high-temperature resistant coating comprises organic silicon resin, metallic oxides, non-metallic oxide packing, metal powder, a dispersing agent, an anti-settling agent and a coupling agent. The solvent-free high-temperature resistant coating for high temperature protection on warship components can be used for preventing high temperature components of warships, such as high temperature pipelines, chimneys, missile firing devices and gun barrels, from being corroded by high temperature when in service, the reasonable strength of steel structures of base bodies can be maintained, the fighting requirements are ensured, and the service life is prolonged; the solvent-free high-temperature resistant coating for high temperature protection on warship components is applicable to environments with high temperature, high humidity, high salty fog and high ultraviolet irradiation and is excellent in high temperature resistance, high in corrosion resistance, and due to the characteristics that the requirement of warships on a high temperature resistant coating is met and no solvent or VOC is used, the solvent-free high-temperature resistant coating is relatively safe to coatand transport along with the warships.
Owner:江阴市大阪涂料有限公司
Biological pesticide for controlling Bradysia odoriphaga, and production method thereof
InactiveCN106942277AGood for continuous plantingPromote safe productionBiocideAnimal repellantsBacillus thuringiensisBiopesticide
The invention relates to the technical field of biological pesticides, and concretely relates to a technology for preparing a Bradysia odoriphaga harm control preparation from composite biological fungi. The technology comprises the following steps: preparing the composite biological fungi through mixing Beauveria bassiana, Bacillus thuringiensis and Empedobacter brevis, and mixing and fermenting the composite biological fungi, assistants and auxiliary materials to obtain a biological pesticide for controlling Bradysia odoriphaga. The biological pesticide has the advantages of substantial Bradysia odoriphaga control effect, stable performances, wide range of applicable areas, environmental protection, and safety to the health of human bodies.
Owner:山东礽健生物科技有限公司
Nylon heat-resistant anti-yellowing agent not capable of adsorbing no formaldehyde and preparation method thereof
InactiveCN110565414AGood anti-yellowing effectGood water solubilityOrganic chemistryLight resistant fibresSolventPollutant
The invention discloses a nylon heat-resistant anti-yellowing agent not capable of adsorbing no formaldehyde and a preparation method thereof. The nylon heat-resistant anti-yellowing agent is preparedfrom 20-70% of an anti-oxidant agent containing an azacycle structure, 20-78% of deionized water and 2-10% of sodium hydroxide (NaOH). The preparation method comprises the steps that a 500mL four-necked flask is employed, based on the total mass, 20-70% of the anti-oxidant agent containing the azacycle structure dissolved into a solvent is added into the flask, 20-78% of the deionized water is added to adjust the effective content to be 5-40%, stirring is conducted for 20 minutes, 2-10% of the sodium hydroxide (NaOH) is added to adjust the pH value of the solution to be 5.0-7.0, and a clear liquid product, namely the finished nylon heat-resistant anti-yellowing agent, is obtained. The nylon heat-resistant anti-yellowing agent adsorbs no formaldehyde, the heat-resistant anti-yellowing effect is good, the water solubility is excellent, the process is simple, the operability is high, no pollutants are generated, the cost is low, and the nylon heat-resistant anti-yellowing agent is friendly to the human health and wide in market prospect.
Owner:伟格仕纺织助剂(江门)有限公司
Environment-friendly treatment method for reducing shrinkage rate of elastic fabric and elastic fabric
The invention relates to the field of textile fabrics, and discloses an environment-friendly treatment method for reducing the shrinkage rate of an elastic fabric and the elastic fabric, the elastic fabric comprises warp yarns and weft yarns, the weft yarns are elastic yarns containing wool fibers, and the warp yarns are cotton yarns, the method comprises the following steps: coating the surface of the elastic fabric with a first coating finishing liquid, and carrying out baking treatment; the surface of the elastic fabric is coated with the second coating finishing liquid, and baking treatment is conducted. By means of the environment-friendly treatment method for reducing the shrinkage rate of the elastic fabric, the shrinkage rate problem of the elastic fabric can be effectively solved, and the adopted coating finishing liquid raw materials are environmentally friendly and friendly to human health. Moreover, after the elastic fabric is treated by the method disclosed by the invention, the scratchiness of the skin caused by the scale structure of the wool fiber in the elastic fabric can be effectively solved, so that the elastic fabric has a soft and comfortable touch feeling.
Owner:GUANGDONG FORWARD DENIM
ATF oil resistant flame retardant type impregnated resin as well as preparation method and application thereof
The invention relates to ATF oil resistant flame retardant type impregnated resin as well as a preparation method and application thereof. The ATF oil resistant flame retardant type impregnated resin is prepared from the following raw materials in percentage by weight: 25-45 percent of modified epoxy resin, 15-37 percent of organic silicon resin, 5-15 percent of benzoxazine resin, 30-52 percent of a crosslinking monomer, 1-10 percent of a curing agent, 0.05-1.5 percent of a drying catalyst, 0.5-2 percent of an initiator and 0.02-0.1 percent of an polymerization inhibitor; the modified epoxy resin is prepared by enabling novolac epoxy resin to carry out esterification with acrylic acid and maleic anhydride sequentially; and the organic silicon resin is prepared by carrying out reaction on diphenylsilanediol and a double bond containing silane coupling agent. The impregnated resin has the characteristics of excellent transmission oil resistance, flame retardancy, heat resistance, high bonding strength and the like and is suitable for insulation impregnating treatment of an oil cooling type electric vehicle drive motor.
Owner:SUZHOU JUFENG ELECTRICAL INSULATION SYST
Pseudomonas strain and application thereof
ActiveCN112063558APromote growthGood control effectPlant growth regulatorsBiocideBiotechnologyPlant nematode
The invention discloses a pseudomonas strain and application thereof. The strain is preserved in China Center for Type Culture Collection on July 24th, 2020, and the preservation number is CCTCC NO: M2020346. The strain can prevent and treat various plant soil-borne diseases, particularly has a remarkable prevention and treatment effect on plant nematode diseases and soybean root rot, and lays a foundation for research and development of biological prevention and treatment of the soil-borne diseases; and the strain can also promote plant growth, is beneficial to promoting agricultural sustainable development, and has a good application prospect.
Owner:HUNAN AGRICULTURAL UNIV
Treatment method for oil sludge
InactiveCN110526548ANon-irritatingEfficient removalSludge treatmentLiquid hydrocarbon mixture productionResource recoveryOil sludge
The invention discloses a treatment method for oil sludge. According to the method provided by the invention, biosurfactant lipopeptide with superior surface / interface activity is used as an oil sludge cleaning agent for washing the oil sludge to desorb oil from the oil sludge, at the same time, an acid is added for post-treatment, so that an oil phase, a sludge phase and a water phase are separated, and oil recovery can be realized; the lipopeptide can be a fermentation broth of bacillus subtilis, a crude extract of the fermentation broth, or a purified pure product, and the lipopeptide can be used alone or in combination with a chemical surfactant; and the method provided by the invention can efficiently remove the oil in the oil sludge, is simple to operate and environmentally friendly,and has good application prospects in the harmless treatment and resource recovery of the oil sludge.
Owner:金华北顿生物科技有限公司
Erasable water-based paint ink for mark pens and preparation method thereof
PendingCN111410868AStrong covering powerGood light fastnessInksPolymer sciencePolyether polyurethane
The invention discloses erasable water-based paint ink for mark pens and a preparation method thereof. The erasable water-based paint ink comprises the following components in percentage by mass: 15-40% of water; 0.1-0.5% of a defoaming agent; 0.3-1% of a wetting dispersant; 5-15% of water-based acrylic resin; 5-15% of waterborne polyurethane resin; 30-80% of water-based color paste; 0.1%-0.3% ofa preservative; 3-6% of a humectant; 0.1-1% of an anti-settling agent; and 0.05-10% of other auxiliary agents, wherein the water-based polyurethane resin is water-based aliphatic polyether polyurethane resin. The erasable water-based paint ink for the mark pen can be erased by dry cloth after being used for writing on smooth surfaces such as glass and the like, and has the characteristics of strong covering power, good sun resistance, good water resistance and high drying speed; and the environment-friendly and non-toxic effects are realized, and the environment-friendly effect is realized onthe health of consumers.
Owner:肇庆斯塔文化用品有限公司
Strong-flashing water-based paint ink for pens and preparation method thereof
The invention discloses strong-flashing water-based paint ink for pens and a preparation method thereof. The strong-flashing water-based paint ink is characterized by comprising the following components in percentage by mass: 30-50% of water; 0.1 to 0.5 percent of a defoaming agent; 0.3-1% of a wetting dispersant; 20-35% of water-based aliphatic polyurethane resin; 0-30% of water-based color paste; 0.1%-0.3% of a preservative; 3-6% of a humectant; 0.1-1% of an anti-settling agent; 5-10% of an effect pigment; 0.05-10% of other auxiliary agents; the effect pigment comprises aluminum powder, thealuminum powder is sequentially wrapped by a silicon oxide passivation layer and an iron oxide layer from inside to outside, the aluminum powder wrapped by the silicon oxide passivation layer and theiron oxide layer has good water stability, and the iron oxide layer endows the aluminum powder with golden yellow color and a strong golden flashing effect is generated by combining mirror reflectionof the aluminum powder sheet. The strong-flashing water-based paint ink for the pens is environment-friendly and non-toxic and is very friendly to the environment and the health of consumers; the aluminum powder is sequentially coated with the silicon oxide passivation layer and the iron oxide layer from inside to outside, and a strong golden flashing writing effect is achieved after writing.
Owner:肇庆斯塔文化用品有限公司
Sweetening agent with compound type taste
The invention relates to a sweetening agent, and particularly relates to a sweetening agent with a compound type taste. The invention provides the sweetening agent with the compound type taste. The sweetening agent comprises the following components in parts by weight: 5-11 parts of protein sugar, 3-6 parts of acesulfame, 4-9 parts of alitame, 5-8 parts of stevioside and 0.3-0.7 part of lycopene. The sweetening agent with the compound type taste has a compound type taste of preserved plum and watermelon, is safe in selected components and friendly to the health of a human body. The sweetening agent is reasonable in proportioning, is capable of keeping the tastes of the preserved plum and the watermelon without being tainted by other odors, and accords with the demand of people.
Owner:潘昌仁
91 # lead-free aviation gasoline and production method thereof
ActiveCN113736525ABoost octaneReduce manufacturing costLiquid carbonaceous fuelsProcess engineeringBase oil
The invention provides an aviation gasoline composition capable of being used as 91 # lead-free aviation gasoline and a production method thereof, the aviation gasoline composition contains base oil and an additive, and the base oil contains a blending component A, a blending component B and an optional blending component C. The aviation gasoline composition disclosed by the invention meets various index requirements of ASTM D910 standard, ASTM D7547 standard and GB 1787-2018 standard on anti-knock property, evaporability, low-temperature fluidity, stability and the like of 91 # aviation gasoline, meanwhile, the blending components are few, and the components do not need to be highly refined, are cheap and easy to obtain and are wide in source. Besides, the aviation gasoline composition does not contain tetraethyl lead, is environment-friendly, and can meet the requirements of people on environmental protection.
Owner:EAST CHINA UNIV OF SCI & TECH
No.94 lead-free aviation gasoline and production method thereof
ActiveCN113736527ABoost octaneReduce manufacturing costLiquid carbonaceous fuelsProcess engineeringBase oil
The invention provides an aviation gasoline composition capable of being used as No.94 lead-free aviation gasoline and a production method thereof, the aviation gasoline composition contains base oil and an additive, and the base oil contains a blending combination A, a blending component B and a blending component C. The aviation gasoline composition does not contain tetraethyl lead and is environmentally friendly, the motor octane number of the aviation gasoline composition ranges from 94 to 96, the octane number is high, the vapor pressure, the distillation range and other indexes meet the requirements of the ASTM D7547 standard and the ASTM D7592 standard for UL94 # aviation gasoline, and the aviation gasoline composition can be used for most engines used by 100 # low-lead aviation gasoline. The aviation gasoline composition disclosed by the invention has the advantages of few required blending components, wide sources, good fuel performance, low production cost and simple production method.
Owner:EAST CHINA UNIV OF SCI & TECH
Detection method of transfer volume of ethylenediamine and hexamethylenediamine in food contact materials and products
ActiveCN110749676AEfficient acquisitionReduce volatilityComponent separationFood contact materialsBenzaldehyde
The invention discloses a detection method of the transfer volume of ethylenediamine and hexamethylenediamine in food contact materials and products. The detection method comprises the steps that sampling is performed; and pretreatment and detection of the content of the ethylenediamine and the hexamethylenediamine in a target substance after the pretreatment are performed. The pretreatment step includes the steps that when a sample is a non-oil-based substance, the sample is mixed with a first internal standard solution to form a first mixed solution; the first mixed solution is mixed with afirst extractant, and oscillation treatment is performed at a first preset temperature for the first preset time; and after standing and layering, a supernatant is obtained as a target substance to bedetected. Benzaldehyde is used as a derivatization reagent to convert the ethylenediamine and the hexamethylenediamine into corresponding diaminophenyl compounds, the detection is performed through the independently developed GC-MS, the limit of quantitation of water-based and acidic food and alcohol food simulants can reach 0.5 mg / L, and the limit of quantitation in oil-based food simulants canreach 0.5 mg / kg.
Owner:深圳天祥质量技术服务有限公司
Water-based paint ink for valve type pen and preparation method of water-based paint ink
The invention relates to the technical field of fine chemical engineering, and discloses a water-based paint ink for a valve type pen. The water-based paint ink is prepared from the following components in percentage by mass: 10 to 20% of water; 0.1 to 0.5% of a defoaming agent; 0.8-2% of a wetting dispersant; 15-25% of waterborne acrylic resin I; 5-10% of waterborne acrylic resin II; 20 to 50% ofa white water-based color paste; 0.1%-0.3% of a preservative; and 0.05-10% of other auxiliary agents. The water-based paint ink for the valve type pen can achieve various properties of existing solvent type paint pen ink, has the advantages of being high in drying speed after writing, good in weather resistance, good in adhesive force on various writing base materials and the like, is basically odorless, environment-friendly and non-toxic, and can meet the safety technical standards of European Union and America.
Owner:肇庆斯塔文化用品有限公司
102 # lead-free aviation gasoline and production method thereof
The invention provides an aviation gasoline composition capable of being used as No. 102 lead-free aviation gasoline and a production method thereof, the aviation gasoline composition contains base oil and an additive, and the base oil contains a blending composition A (mesitylene as a main component), a blending component B (C8 alkylate as a main component), a blending component C (C5-C6 alkane as a main component) and a blending component D (limonene as a main component). The aviation gasoline composition contains the blending component D, can significantly increase the octane number, does not contain tetraethyl lead, methyl tert-butyl ether and aromatic amine compounds, and can reduce environmental pollution. The motor octane number of the aviation gasoline is not less than 102, the octane number is high, the vapor pressure, the distillation range and other indexes meet the requirements of the ASTM-D7719 standard on the 102 # aviation gasoline, the production cost is low, the fuel performance is good, the raw materials are wide and easy to obtain, and the production method is simple.
Owner:EAST CHINA UNIV OF SCI & TECH
In-mold gel coat for wind power blades
ActiveCN106047112BIncrease profitIncrease productivityPolyurea/polyurethane coatingsElectricityTurbine blade
The invention discloses wind turbine blade in-mold gel coat, which comprises a main agent and a curing agent, wherein the main agent is prepared from the following ingredients in parts by weight: 50 to 100 parts of resin A, 0 to 50 parts of resin B; 0 to 100 parts of fillers and 0 to 10 parts of auxiliary agents; the resin A is an non-polyetheramine di-amine compound; the resin B is a polyetheramine di-amine compound; the dosage of a curing agent in the in-mold gel coat is 50 to 100 percent of the weight of the resin. Through experimental test, compared with the existing in-mold gel coat, the in-mold gel coat formed in such a way has the advantages that the curing time is greatly shortened; meanwhile, the weathering performance is greatly improved; high weathering performance and fast curing performance of the in-mold gel coat are realized; a blade paint coating can be directly replaced.
Owner:MEGA P&C ADVANCED MATERIALS SHANGHAI CO LTD
Plant fiber insect-repelling density board
PendingCN113696299AWith termite protectionReduce dosageNon-macromolecular adhesive additivesWood treatment detailsAdhesivePlant fibre
The invention provides a manufacturing method of a plant fiber insect-repelling density board. The preparation method comprises the following steps of (1) preparing materials; (2) manufacturing fiber; (3) soaking the fiber obtained in the step (2) in a flame retardant, and drying the fiber at 95 DEG C after soaking until the water content of the fiber is 40%-50%, wherein a preparation method of the flame retardant comprises the steps that 1.0 part of ammonium polyphosphate is taken and dissolved in 20 parts of water, 0.5 part of dry layered zirconium phosphate is added, the materials are stirred to be uniform, and then turbid emulsion is obtained, (4) coating the dry fiber surface with an adhesive; (5) forming a blank board in the mode of conducting pre-pressing and cutting while conducting laying; (6) feeding the formed blank board into a cold molding machine through a plate loader, and conveying the blank board into a curing chamber through a plate unloader to be cured after cold pressing, and (7) conducting demolding, airing or drying, edge cutting, sanding and thickness fixing in sequence on the cured blank board, and obtaining the plant fiber particle insect-repelling density board. The density board does not release free formaldehyde, is flame retardant, has mosquito-repellent and mothproof performance, and is friendly to the environment and human health.
Owner:江苏美标家居科技有限公司
6-series aluminum medium-temperature ultrasonic cleaning agent and preparation method thereof
The 6-series aluminum medium-temperature ultrasonic cleaning agent is prepared from the following components in percentage by weight: 72.3 percent to 86 percent of water, 1.8 percent to 3.5 percent of sodium metasilicate, 1.6 percent to 3.7 percent of triethanolamine, 0.5 percent to 1.3 percent of cocoanut fatty acid diethanolamide, 1.4 percent to 2.6 percent of isomeric fatty alcohol polyoxyethylene ether, 4.8 percent to 7.2 percent of OP-10, 0.9 percent to 1.4 percent of a penetrating agent and 3 percent to 8 percent of a cosolvent. The invention further discloses a preparation method of the 6-series aluminum medium-temperature ultrasonic cleaning agent. Compared with the prior art, the cleaning agent has the advantages that various nonionic surfactants in the cleaning agent are matched with the cleaning aid, so that interfacial tension can be obviously reduced, oil stains can be quickly stripped, and the cleaning agent is resistant to acid and alkali environments, free of layering, stable in finished product, resistant to hard water, free of influence on the cleaning effect and capable of being used in a medium temperature range.
Owner:富兰克润滑科技(太仓)有限公司
Epoxy resin plate splicing glue as well as preparation method and application thereof
PendingCN113897161ALow VOC contentHealthy friendlyNon-macromolecular adhesive additivesWood veneer joiningPolymer scienceAdhesive
The invention discloses an epoxy resin plate splicing adhesive and a preparation method and application thereof. The epoxy resin plate splicing adhesive is prepared from a component A and a component B. The component A is prepared from epoxy castor oil, a defoaming agent, a dispersing agent, filler and a thixotropic agent; and the component B is prepared from a curing agent. The epoxy resin plate splicing glue prepared by the invention has the advantages of high flexibility, weather resistance and boiling resistance, low VOC content and the like.
Owner:江门保实捷化工有限公司
A kind of environment-friendly cleaning agent for electronic industry and preparation method thereof
ActiveCN105602752BHealthy friendlyEnvironmental protection atmosphereOrganic non-surface-active detergent compositionsAlcoholEther
Belonging to the field of electronic industry environment-friendly cleaning agents, the invention provides an environment-friendly cleaning agent for electronic industry and a preparation method thereof, and in particular relates to a PCBA cleaning agent for wave soldering post-weld FLUX residue. The environment-friendly cleaning agent is composed of the following raw materials by mass percentage: 41.2%-42.9% of lower alcohol, 51.1%-56.8% of methylsiloxane, 1%-3% of propylene glycol ether, and 1%-3% of limonene. Compared with existing traditional cleaning agents for electronic industry, the electronic environment-friendly cleaning agent provided by the invention does not contain CFC / HCFC or HAP, is friendlier to workers' health in practical use, is safer and more environmentally friendly to the atmospheric environment, and helps enterprises meet EU ROSH, REACH and HF requirements and enhance international competitiveness.
Owner:深圳市同方电子新材料有限公司
A bacterial strain for preventing and controlling plant nematodes and its application
ActiveCN108441443BGood control of plant nematode activityHealthy friendlyBiocideBacteriaBiotechnologyPlant nematode
The invention relates to a bacterial strain for preventing and controlling plant nematodes and its application. The bacterial strain Y149 provided by the present invention belongs to the genus Massilia sp., and has been deposited in the China Center for Type Culture Collection on November 27, 2017. The address of the preservation unit is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 2017745. The present invention also provides the microbial bacterial agent containing the bacterial strain Y149 and its preparation method, and applies the above-mentioned bacterial strain Y149 or the microbial bacterial agent to the preparation of products for preventing and controlling plant nematodes. The bacterial strain Y149 or microbial bacterial agent of the present invention has a good control effect on plant nematodes, and is low in cost and friendly to the environment.
Owner:HUNAN AGRICULTURAL UNIV
Industrial circulating cooling liquid
PendingCN114106788AIncreased antibacterial persistenceImprove toleranceBiocideHeat-exchange elementsActive agentPolyethylene glycol
The invention discloses industrial circulating cooling liquid, which is prepared from the following components in parts by weight: 15 to 30 parts of ethylene glycol, 1 to 5 parts of oligomeric polyethylene glycol, 0.001 to 0.01 part of benzimidazole quaternary ammonium salt surfactant, 0.1 to 3 parts of water-soluble polycarboxylic acid, and the balance of water and a regulating amount of pH (Potential of Hydrogen) regulator, the molecular weight of the oligomeric polyethylene glycol is 200-500, and the pH regulator is used for regulating the pH value of the industrial circulating cooling liquid to 7-9. The industrial circulating cooling liquid has better weather resistance, is environment-friendly and can inhibit bacteria for a long time.
Owner:湖南省希润弗高分子新材料有限公司
Method for preparing organosilicon modified paper sheet humidifying strong agent
InactiveCN101302731BImprove wet strengthImprove surface water resistanceReinforcing agents additionEpoxyCross-link
The invention discloses a preparation method of a paper wet strengthening agent that is modified by organic silicon, which comprises the following steps: firstly combines the raw materials of dibasic acid and polyhydric amine into a polyamine intermediate compound of daiamid. A certain amount of the polyamine intermediate compound of daiamid, epoxy chloropropane and an organosilane coupling agentare taken to react under certain temperature so as to achieve certain viscosity, and the reaction is halted by adding acid, thus obtaining the paper wet strengthening agent that is modified by organic silicon. The preparation method of the paper wet strengthening agent that is modified by organic silicon can reduce the usage of the epoxy chloropropane and lower the organic chlorine content in discharged substances; the cross-linked product greatly increases molecular weight and active crosslinking points of molecular chain sections. The product of the paper wet strengthening agent that is modified by organic silicon achieves greatly raised retention degree, can improve not only the wet strength of paper but also the paper physical performance such as folding resistance, tensile strength and dry strength, etc., and the superficial water-proof performance of paper can be greatly raised if the paper wet strengthening agent is coated on the surface of paper.
Owner:SHAANXI UNIV OF SCI & TECH
a sound-absorbing felt
ActiveCN108995329BImprove fire and flame retardant performanceHigh oxygen indexSynthetic resin layered productsSound proofingPolymer scienceCarbon fibers
Owner:GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
Multi-grade composite trousers suitable for pregnant woman
PendingCN111602874AControl intersection areaSimple structureGarment special featuresTrousersMechanical engineeringGeneral surgery
The invention discloses multi-grade composite trousers suitable for a pregnant woman, and relates to the technical field of clothes. One of the waistband of left abdomen blocking cloth and the waistband of right abdomen blocking cloth is provided with a first connecting part, and the other one is provided with a second connecting part used for being detachably connected with the first connecting part. At least one of the first connecting part and the second connecting part is arranged continuously or at intervals in the extending direction of the waist. The first connecting part and the secondconnecting part have a first limit matching state and a second limit matching state. When the first limit matching state is transited to the second limit matching state, the cross area of the left abdomen blocking cloth and the right abdomen blocking cloth is decreased progressively, so that the waistline of the multi-grade composite trousers suitable for a pregnant woman is increased progressively. The trousers are simple in structure, can be adaptively adjusted and changed according to the body shape of a user, can meet the use requirements of different body shapes, keep the fitting degree,and are high in wearing comfort. The trousers are very suitable for pregnant women which are special users, and are also suitable for consumers with rapid body shape change.
Owner:SANMING UNIV
A kind of Pseudomonas bacteria strain and its application
ActiveCN112063558BPromote growthGood control effectPlant growth regulatorsBiocideBiotechnologyPlant nematode
The invention discloses a strain of Pseudomonas and its application. The strain is preserved in the China Center for Type Culture Collection with a preservation date of July 24, 2020 and a preservation number of CCTCCNO:M2020346. The strain can prevent and control a variety of plant soil-borne diseases, especially the control effect on plant nematodes and soybean root rot, which has laid a foundation for the research and development of biological control of soil-borne diseases; the strain can also promote plant growth and contribute to It can promote the sustainable development of agriculture and has a good application prospect.
Owner:HUNAN AGRICULTURAL UNIV
Environment-friendly cleaning agent for electronic industry and preparation method thereof
ActiveCN105602752AHealthy friendlyEnvironmental protection atmosphereOrganic non-surface-active detergent compositionsAlcoholEther
Belonging to the field of electronic industry environment-friendly cleaning agents, the invention provides an environment-friendly cleaning agent for electronic industry and a preparation method thereof, and in particular relates to a PCBA cleaning agent for wave soldering post-weld FLUX residue. The environment-friendly cleaning agent is composed of the following raw materials by mass percentage: 41.2%-42.9% of lower alcohol, 51.1%-56.8% of methylsiloxane, 1%-3% of propylene glycol ether, and 1%-3% of limonene. Compared with existing traditional cleaning agents for electronic industry, the electronic environment-friendly cleaning agent provided by the invention does not contain CFC / HCFC or HAP, is friendlier to workers' health in practical use, is safer and more environmentally friendly to the atmospheric environment, and helps enterprises meet EU ROSH, REACH and HF requirements and enhance international competitiveness.
Owner:深圳市同方电子新材料有限公司
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