50results about How to "Reasonable ratio" patented technology

The utility model discloses a static emulsification integrated device for M-type emulsion explosives. The static emulsification integrated device is formed by connecting and combining a water phase tank (12), an oil phase tank (13), a water phase delivery pump (14), an oil phase delivery pump (15), two mass flowmeters (16), a venturi tube (17) and a multi-stage jet flow static emulsifier (G), the multi-stage jet flow static emulsifier (G) is formed by combining an SK type static mixing pipe (1), an SK type static mixing unit (2), a first jet flow perforated plate (3), a jet flow emulsifying pipe (4), a forward spiral blade (5), a second jet flow perforated plate (6), a diaphragm type pressure gauge (7), a reverse spiral blade (8), an SV type uniform emulsion mixing pipe (9), an SV type uniform emulsion mixing unit (10) and a pressure relief pipe (11). The device disclosed by the utility model integrates SK type static mixing, multi-stage jet emulsification and SV type uniform emulsion mixing, and has the characteristics of good emulsification effect, high productivity, stable product quality, constant working pressure, high production line safety and excellent product performance index.

The nuclear-radiation-resistant halogen-free low-smoke flame-retardant polyolefin irradiation sheath material comprises the following raw materials in parts by weight: 30-50 parts of a polar copolymer, 10-30 parts of an elastomer, 10-30 parts of polyethylene, 5-15 parts of a grafting material, 120-180 parts of a flame retardant, 20-40 parts of a flame-retardant synergist, 1-2 parts of a lubricant, 3-5 parts of an antioxidant and 1-2 parts of a dispersant. The polar copolymer comprises an ethylene-vinyl acetate copolymer and the like; the elastomer comprises aluminum hydroxide and the like; the flame-retardant synergist comprises zinc borate and the like; the lubricant comprises polyethylene wax and the like; the antioxidant comprises tetra [beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and the like; and the dispersing agent is a silane coupling agent. The preparation method of the nuclear-radiation-resistant halogen-free low-smoke flame-retardant polyolefin radiation sheath material comprises the following steps: mixing and granulating the flame-retardant synergist, the antioxidant and part of the polar copolymer to obtain a material B; mixing, screw extrusion, shearing and stirring are carried out on the remaining raw materials and the material B, and finally extrusion granulation is carried out to obtain a finished product material.

The invention provides a cast iron release agent and a preparation method and application thereof. The cast iron release agent comprises the following raw materials in parts by weight: 10-13 parts of coking plant fly ash, 3-6 parts of bentonite, 3-6 parts of pyrophyllite and 75-88 parts of water. According to the cast iron release agent, the fly ash of a coking plant is used as a raw material, the production cost is low, meanwhile, the environmental protection pressure of the coking plant is relieved, and the purposes of reducing cost and improving efficiency are achieved; the cast iron release agent is good in integrality and long in service life, and can be effectively attached to the inner surface of a casting mold, so that an effective isolation layer is formed between molten iron and the casting mold, a cast iron machine can demold without additional knocking, a cast iron ingot is smooth in surface and low in iron loss, the cast iron cost is reduced, and the application prospect is wide.

The invention relates to a venturi effect preparation method of a terbinafine film-forming composition, which comprises the following steps: 1) dissolving terbinafine or terbinafine hydrochloride in a solvent to obtain a medicine liquid; 2) mixing the medium chain triglyceride and the medicine liquid to obtain mixed liquid; 3) performing dry mixing with a film-forming agent to obtain a dry-mixed polymer; and 4) adding the dry-mixed polymer into the mixed liquid through a Venturi effect, and hydrating the obtained polymer. The preparation method has the advantages that the composition proportion, the preparation method and the mixing equipment are reasonable in design, the dry-mixed polymer is introduced into the liquid by utilizing the Venturi effect, lumps can be effectively crushed, the hydration effect is improved, the preparation method is efficient and economical, and the preparation time can be effectively saved and the energy consumption can be effectively reduced on the premise of ensuring the use effect.

The invention provides a quick-acting anti-alcoholism composition and a preparation method thereof, and belongs to the technical field of traditional Chinese medicine compositions. The quick-acting anti-alcoholism composition disclosed by the invention is prepared from the following components in parts by weight: 35-45 parts of a silibinin extract, 5-15 parts of a curcumin extract, 5-15 parts of a radix puerariae extract, 1-5 parts of piperine and 1-5 parts of corn oligopeptide. The biocompatibility and the absorption speed are increased by combining and proportioning the effective substances and preparing the nano-liposome, so that the aim of quickly dispelling the effects of alcohol is fulfilled.

The present invention discloses a flexible circuit board containing a transparent cover film and a preparation method thereof, comprising a transparent composite PI substrate and a transparent cover film formed on at least one side of the transparent composite PI substrate; the transparent composite PI substrate comprises a first copper foil layer, a first UV-resistant transparent polyimide layer, a first UV-resistant transparent adhesive layer and a second copper foil layer from top to bottom; the transparent cover film comprises a second UV-resistant transparent adhesive layer and a second UV-resistant transparent polyimide layer; the glass transition temperature of the first UV-resistant transparent polyimide layer and the glass transition temperature of the second UV-resistant transparent polyimide layer are both greater than 320°C. The circuit board of the present invention has extremely high transmittance, extremely low haze, resistance to QUV irradiation, high Tg, high deflection, low rebound force, voltage resistance and low CTE.

The invention relates to the technical field of traditional Chinese medicine, in particular to a traditional Chinese medicine composition for treating coronary heart disease and a preparation method and application thereof. The traditional Chinese medicine composition is prepared from pseudo-ginseng, suberect spatholobus stem, red sage root, gynostemma pentaphylla, kudzuvine root, radix fici simplicissimae and other raw materials, and pubescent holly root, emblic leafflower fruit, polygala fallax hemsl and other medicines can be selectively added according to the diagnosis and examination results of individual cases. The traditional Chinese medicine composition has the effects of tonifying qi and activating blood, and activating meridians to stop pain. The traditional Chinese medicine is used for treating symptoms such as chest distress, chest pain, palpitation and shortness of breath caused by qi deficiency and blood stasis. The traditional Chinese medicine is suitable for patients with coronary heart disease in modern medicine. The traditional Chinese medicine composition can be used for treating coronary heart disease (the traditional Chinese medicine name is chest stuffiness and pains; the name of Zhuang medicine is Azuki).

The invention provides a traditional Chinese medicine compound composition taking glossy privet fruit as a monarch drug as well as a preparation method and application of the traditional Chinese medicine compound composition. The traditional Chinese medicine compound composition comprises the following raw materials in parts by weight: 15-35 parts of glossy privet fruit, 20-40 parts of oyster, 10-25 parts of curcuma zedoary, 5-25 parts of wine-treated rhubarb, 5-25 parts of roasted rhizoma atractylodis macrocephalae and 20-40 parts of oldenlandia diffusa. The traditional Chinese medicine compound composition is obvious in tumor treatment effect, can nourish liver and kidney, strengthen healthy energy to assist in removing food retention, promote qi circulation, break blood, remove food retention and relieve pain, has the effects of nourishing yin, softening hard mass, activating blood and detoxifying, and has the characteristics of high practical operability, high compliance, high tumor inhibition rate and low adverse reaction.

The present application relates to the technical field of wrapping film, and discloses a processing technology of puncture-resistant high-strength wrapping film, comprising the following specific steps: S1, proportioning preparation of ingredients: the proportioned PE raw material is placed in a first ingredient box, and the tackifying master batch is introduced into a weighing box to control the proportion of each; S2, mixing of wrapping film raw materials: the proportioned PE raw material and tackifying master batch are introduced into the machine body through a material guide plate, when the tackifying master batch needs to be proportioned and then enters the machine body for stirring, first start the closing motor, the operation of the closing motor drives the first bidirectional screw rod to rotate, the first bidirectional screw rod drives the second bidirectional screw rod to rotate, and the gravity sensor is used to weigh the tackifying master batch falling in the weighing box, so that the raw materials of the wrapping film are reasonably proportioned, and the participation of personnel in the production process is reduced.

The invention provides a water fertilizer for preventing the bending phenomenon of cut-flower roses as well as a preparation method and application of the water fertilizer, and belongs to the technical field of fertilizers. Comprising the following components: potassium nitrate, monopotassium phosphate, calcium nitrate terahydrate, ammonium dihydrogen phosphate, calcium sulfate, magnesium sulfate heptahydrate, chelated zinc, borax, sodium bicarbonate, chelated iron, chelated manganese, chelated copper and sodium molybdate dehydrate. The preparation method of the water fertilizer for preventing the bending phenomenon of the cut-flower roses is simple, quick in effect, low in cost, environment-friendly and safe, and the growth and development process of the cut-flower roses is accurately regulated and controlled by guaranteeing normal water fertilizer supply. The occurrence rate of the bending phenomenon of the cut-flower roses is obviously reduced, the quality of the cut-flower roses is effectively improved, and the quality improvement and efficiency improvement of the industry are promoted.

This invention discloses a fermentation agent for treating agricultural ecological solid waste, its preparation method, and its application, belonging to the field of microbial technology. The fermentation agent of this invention comprises compound functional bacteria, soybean meal, molasses, disodium hydrogen phosphate, corn straw powder, and a preservative. The compound functional bacteria include *Bacillus subtilis*, *Trichoderma helicola*, and *Bacillus bellis*. This invention uses a compound of three strains—*Bacillus subtilis*, *Trichoderma helicola*, and *Bacillus bellis*—in a specific ratio to synergistically accelerate the decomposition of straw, effectively shortening the fermentation cycle and improving the decomposition effect. This agent can efficiently degrade agricultural ecological solid waste, converting it into high-quality organic fertilizer, thus turning waste into treasure. It solves the problem of agricultural solid waste pollution and saves fertilizer resources, demonstrating significant ecological, economic, and social benefits.

The present application relates to the technical field of high polymer composite material, and especially to a co-extrusion fabric, a preparation method and application thereof, and is especially suitable for the field of steel-plastic composite floor which is strict in size stability and mechanical property requirement, such as building decoration, industrial floor, outdoor paving, etc., the co-extrusion fabric comprises the following raw material components in parts by weight: polyethylene: 40-70 parts; elastomer: 20-50 parts; compatibilizer: 3-10 parts; inorganic mineral: 5-10 parts; antioxidant: 0.1-1 part; lubricant: 0.5-1 part; a low-shrinkage, anti-warping polyethylene composite zinc-aluminum-magnesium alloy steel-plastic floor co-extrusion fabric is provided, by optimizing the raw material ratio, selecting special compatibilizer and inorganic mineral filler, the efficient compatibility of polyethylene, elastomer and inorganic filler is realized, the polyethylene crystalline morphology is controlled, the material shrinkage is greatly reduced, the hidden danger of warping deformation is eliminated, and the mechanical strength, toughness and weather resistance of the material are improved.

The present application discloses a method for preparing an aerated whey beverage and an aerated whey beverage thereof, wherein the aerated whey beverage comprises the following steps: using the expelled whey of the production of curd, filtering, heating, adding auxiliary materials and stirring evenly, and then coordinating the steps of cooling, acidification, homogenization, cooling, aeration, filling, sterilization and the like in the later stage, finally obtaining a novel aerated whey beverage, providing consumers with a novel edible mode of a beverage, and the preparation method is simple and easy to operate, and the utilization rate of the expelled whey is as high as 100%. The preparation process of the whey beverage no longer needs to add purified water, so that the cheese by-product is utilized at a high value, and the cost and carbon emission are greatly reduced, and environmental pollution is reduced. At the same time, the whey protein amino acid ratio is reasonable, and it is a complete protein, has rich active substances, and is easily digested and absorbed by the human body.

The present application provides a diamond composite material for binder jetting and an additive manufacturing method thereof, which belongs to the field of additive manufacturing technology. The diamond composite material for additive manufacturing includes diamond powder and Mn-(10.5-13.5 wt%)Si alloy powder, wherein the content of the Mn-(10.5-13.5 wt%)Si alloy powder is 15-45 vol.% of the diamond powder; the additive manufacturing method includes first printing a diamond composite green body using a binder jetting additive manufacturing technology, and then obtaining a high-density diamond composite sintered part by a degreasing-sintering process. The Mn-(10.5-13.5 wt%)Si alloy powder introduced in the present invention has a lower sintering temperature, good wettability with diamond particles, and can undergo metallurgical reaction during high-temperature sintering to form a carbide layer to ensure stable bonding, and sufficient liquid phase during the sintering process, which is conducive to significantly improving the density and mechanical properties of the diamond composite printed-sintered parts.

The invention provides a medicine composition of a thin gauze for treating burn wounds and capable of detoxifying and astringing, a preparation and a preparation method, and relates to the technical field of traditional Chinese medicine, and the medicine composition is prepared from the following components in specific parts by weight: rheum officinale, carbonized sanguisorba root, gallnut, red halloysite, calamine and borneol. The preparation method comprises the following steps: grinding the medicines into fine powder, heating and dissolving the beewax in the oil, filtering out impurities, adding the medicine powder after the oil is slightly cooled, continuously stirring uniformly, and cooling to obtain the ointment. And after disinfection, the medicine is used clinically. The traditional Chinese medicine compound disclosed by the invention can effectively clear away heat and toxic materials, astringe and promote tissue regeneration, is supported by a solid classical theory of traditional Chinese medicine, is reasonable in component proportion, excellent in medicine compatibility, low in cost and easy in quality control, and is proved by animal and clinical experiments to be capable of resisting infection and exudation, exact in curative effect and free of toxic and side effects; the traditional Chinese medicine composition can be applied to preparation of the traditional Chinese medicine composition for shallow and deep I-degree burn wounds.

The application relates to the field of advanced structural ceramics, and particularly discloses a gel injection molding method for preparing high-performance silicon nitride ceramics and a preparation method thereof. Raw materials include beta-SiN submicron powder 75 parts, YO submicron powder 8 parts, TiC submicron powder 5 parts, AlO superfine powder 5 parts, ZrO submicron powder 2 parts and wollastonite 5 parts in terms of mass ratio, a complex whisker regulator and an entry liquid are used, and ceramics are prepared through gel injection molding, dehydration, degreasing and gas pressure sintering. The grain morphology and interface combination are optimized through the whisker regulator, the slurry dispersion and the green body uniformity are improved through the entry liquid, and the product has a density greater than or equal to 99%, a Vickers hardness greater than or equal to 1700HV and a bending strength greater than or equal to 930MPa through 1700-1850 DEG C. gas pressure sintering, and the product has high density, high hardness, high toughness, wear resistance, corrosion resistance and long service life.

The invention discloses a bio-based thermoplastic elastomer as well as a preparation method and application thereof. The bio-based thermoplastic elastomer comprises the following raw materials in parts by weight: 100 parts of bio-based rubber, 80-200 parts of bio-based polyolefin resin, 70-130 parts of a biomass plasticizer, 10-50 parts of an auxiliary agent and 1-10 parts of a composite cross-linking agent, the biomass plasticizer comprises one or more of soybean oil, coconut oil, linseed oil and palm oil; the composite cross-linking agent is prepared from one or more of tert-butyl peroxyisopropyl carbonate, sulfur, phenolic resin, bismaleimide, diphenylsilanediol, triallyl cyanurate and 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane, and the composite cross-linking agent is prepared from one or more of diphenylsilanediol, diphenylsilanediol, triallyl cyanurate and 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane; the bio-based thermoplastic elastomer has excellent high and low temperature performance and sealing performance, and also has the advantages of aging resistance, weather resistance, high mechanical strength and the like.

The invention discloses a traditional Chinese medicine compound composition for preventing and treating liver injury as well as a preparation method and application thereof. The compound composition comprises verbena, alfalfa, Chinese ladiestresses root, hairyvein agrimony, fingered citron, malt and hyperforin perforatum. The traditional Chinese medicine composition is simple in composition and reasonable in proportion, and animal experiments prove that the traditional Chinese medicine composition can improve the liver function, relieve liver inflammation injury, inhibit liver cell necrosis and fatty degeneration, inhibit oxidative stress and resist lipid peroxidation injury and has good prevention and treatment effects on liver injury, cholestatic liver diseases and the like caused by drugs. And the traditional Chinese medicine composition can obviously improve the symptoms such as weakness, nausea, skin and sclera yellow staining, yellow urine, itching, stomachache, hypochondrium lumps, body emaciation and the like in the liver injury period. The medicine is simple in preparation method, convenient to take, low in price, small in side effect and good in curative effect, and provides a good choice for vast patients with hepatopathy.

The present invention provides a low-odor carboxylated styrene-butadiene latex with complete monomer reaction, high reaction conversion rate and low residual monomer content and a preparation method thereof. The latex comprises 50-60 parts of butadiene, 30-40 parts of styrene, 5-15 parts of acrylic acid, 1-3 parts of emulsifier, 1-3 parts of surfactant, 1-2 parts of initiator, 1-3 parts of alkali agent, 100-150 parts of water and 0.05-0.3 parts of redox agent; the preparation method comprises: adding the emulsifier, surfactant, alkali agent and water into a reaction kettle and dissolving them for 5-10 minutes; heating to 70-80°C, adding one-third of the initiator, and simultaneously dropping butadiene, styrene, acrylic acid and the remaining initiator, stirring continuously for 150-180 minutes, and keeping warm for 2-3 hours; adding the redox agent, and keeping warm for 1 hour; transferring to a degassing reaction kettle, introducing water vapor and nitrogen, degassing for 4-8 hours, and discharging after cooling. The present invention is applied to the field of chemical technology.

This utility model relates to the field of textile fabrics, and more particularly to a green and environmentally friendly fabric, comprising a reinforcing surface layer and an environmentally friendly base layer. A heat-melting yarn is disposed between the reinforcing surface layer and the environmentally friendly base layer. The environmentally friendly base layer is made of regenerated cellulose fibers. The top and bottom ends of the heat-melting yarn are fixedly connected to the reinforcing surface layer and the environmentally friendly base layer, respectively. The heat-melting yarn is woven from heat-melting fibers. The reinforcing surface layer is woven from fiber bundles, which include tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers. The tensile fibers, flame-retardant fibers, absorbent fibers, polyester fibers, and corrosion-resistant fibers are bundled together to form a tight structure. This invention solves the technical problems of insufficient environmental performance and functionality in traditional fabrics.

The invention discloses a sunflower seed meal extract and a preparation method and application thereof. The sunflower seed meal extract contains 6 phenolic acid compounds and 2 oligosaccharides, wherein the total content of the 6 phenolic acid compounds is more than 17wt%, and the total content of the 2 oligosaccharides is more than 33wt%. Since the composition ratio of the 6 phenolic acid compounds and the 2 oligosaccharides is reasonable, the sunflower seed meal extract does not need to be added with a stabilizer or embedded in nanoliposomes to ensure the stability of the sunflower seed meal extract. The cytotoxicity of the sunflower seed meal extract is very low, and the 6 phenolic acid compounds and the 2 oligosaccharides have a synergistic effect of resisting ultraviolet radiation damage. The sunflower seed meal extract of the invention is a highly efficient and low-toxic natural ultraviolet absorber, has good resistance to ultraviolet radiation damage and certain antioxidant effects, and can be applied to sunscreen and antioxidant cosmetics and external medicines.

The invention provides an antibacterial and anti-exudation traditional Chinese medicine composition for acute wounds, a pharmaceutical preparation and a preparation method, and relates to the technical field of traditional Chinese medicine, and the antibacterial and anti-exudation traditional Chinese medicine composition is prepared by dissolving radix scutellariae, cortex phellodendri, catechu and borneol in specific parts by weight in ethanol. The traditional Chinese medicine compound disclosed by the invention is a nationwide first batch of nationwide old traditional Chinese medicine showshoe empirical prescription, is clinically applied to more than 60%, is supported by a firm traditional Chinese medicine classical theory, is reasonable in component proportion, excellent in medicine compatibility, low in cost and easy in quality control, and is proved by animal and clinical experiments to be definite in curative effect, free of toxic and side effects, safe to take and suitable for clinical application. The traditional Chinese medicine composition can be applied to preparation of antibacterial and anti-exudation traditional Chinese medicine compositions for acute wounds.

The utility model relates to the technical field of roadbed structures, in particular to a retaining wall type roadbed structure without a bridgehead conical slope. According to the technical scheme, the retaining wall type roadbed structure without the bridgehead conical slope comprises limiting plates, retaining walls, a soil foundation and a mold, the retaining walls are arranged on the two sides of the soil foundation, the limiting plates are installed on the retaining walls, the mold is laid on the portion, between the retaining walls, of the soil foundation through the limiting plates, and the limiting plates are arranged on the limiting plates. And a lime soil layer, a lime cement stabilized macadam soil layer and a cement concrete layer are sequentially filled in the mold. According to the utility model, the strength, the light weight, the flexibility and the construction controllability of the structure are fully considered, so that the structure has excellent engineering performance.

The present invention belongs to the technical field of sucker rods, and specifically relates to a sucker rod surface coating process and a corrosion-resistant sucker rod; the sucker rod head adopts a hot-melt-coated nickel-based alloy powder spraying process, and the sucker rod body is coated with corrosion-resistant materials; the corrosion-resistant materials include the following raw materials, in parts by mass: 30-50 parts of polypropylene, 60-80 parts of modified epoxy resin, 3-5 parts of antioxidant, 5-10 parts of silicon carbide, 1-5 parts of silane coupling agent, and 1-5 parts of stearic acid. The present invention forms a complete isolation layer on the sucker rod to protect the sucker rod from being corroded by oil well production fluid; the corrosion-resistant materials used are reasonably proportioned, and the coating layer formed on the surface of the sucker rod has strong adhesion, good wear resistance, and good anti-corrosion effect.

The invention discloses a formula and a preparation method of a magnesite handicraft antique dyeing solution. The formula comprises the following raw materials in percentage by weight: 100% of water, 1-2% of a penetrant, 0.3-0.5% of a permeation promoter, 0.3-0.5% of a dyeing agent, 0.1-0.3% of an adsorbent, 2-3% of a mordant and 5-8% of a coloring agent. The penetrant is nekal BX, the permeation promoter is table salt, the coloring agent is basic orange, the adsorbent is potassium permanganate, the mordant is ferric trichloride, and the coloring agent is ferrous sulfate. According to the formula and the preparation method of the magnesite handicraft antique dyeing liquid, the proportioning is reasonable, the operation is simple, and the raw materials are low in price. And the antique finishing operation is convenient, and the antique finishing effect of the artware can be achieved without other complicated mechanical equipment, so that the technological level of the artware is on the same level.

The invention belongs to the technical field of animal husbandry feeds, and particularly relates to a puffed feed raw material based on a palm meal and corn formula and a preparation method of the puffed feed raw material. In the prior art, palm meal is subjected to fermentation and other treatments and then is mixed with other materials for use, or the use amount is generally not more than 30wt%. According to the feed raw material provided by the invention, most corn raw materials are replaced by the palm meal with low cost. The feed raw materials comprise 60%-90% of palm meal and 10%-40% of corn, and the preparation method comprises the following steps: uniformly mixing the palm meal and the corn according to a certain proportion, performing curing treatment at 120-140 DEG C by a bulking machine under 1.5-2 standard atmospheric pressures, and packaging after treatment to obtain the finished feed raw materials. According to the feed raw materials and the manufacturing method thereof, the feed is rich in nutrition, low in cost, safe, environmentally friendly and simple in preparation process, and a good feed choice can be provided for healthy development of animal husbandry in China.

The invention belongs to the technical field of forestry pest prevention and control, and particularly relates to an attractant for fir-brown longhorn beetles. According to the invention, the 3-hydroxy-2-hexanone, the 4-n-heptyloxybutyraldehyde and the polyol mixture are mixed according to an ecological principle to attract natural enemy insects to gather, so that the harm of pests is controlled; according to the invention, the mass ratio of 3-hydroxy-2-hexanone to 4-n-heptyloxybutyraldehyde to a polyol mixture is (2-3): (0.2-0.8): (0.5-1); the attractant is reasonable in proportion, has a remarkable attraction effect on the taxolonghorn beetles, has the advantages of being efficient, environmentally friendly, safe, long in lasting period and the like, and has important significance on protection of common tree species such as cedarwood, cryptomeria fortunei and cedarwood harmed by the taxolonghorn beetles.

This invention discloses a liquefied gas storage tank and a vessel for transporting liquefied gas. The liquefied gas storage tank includes a main shielding layer that contacts the liquefied gas on one side, a secondary shielding layer disposed on the other side of the main shielding layer, and at least one liquefied gas loading / unloading tower. The base of the liquefied gas loading / unloading tower includes: a lower part of the base body fixedly connected to the bottom wall; a corrugated plate of the secondary shielding layer connected to the lower part of the base body; and a closed end at one end of at least one corrugation of the secondary shielding layer facing the lower part of the base body. An upper part of the base body has mounting holes in the main shielding layer, through which the upper part of the base body is fixedly connected to the lower part of the base body. By opening mounting holes on the flat surface of the main shielding layer to achieve the installation of the pump tower base, the integrity of the corrugated structure of the main shielding layer is fully preserved, ensuring the expansion and contraction performance of the main shielding layer in low-temperature environments and improving the low-temperature sealing reliability of the storage tank.

The invention belongs to the technical field of high polymer material modification, and relates to a high-elasticity and high-stability PVC (Polyvinyl Chloride) granule, a preparation method and application in a medical catheter. The granules are prepared from the following raw materials in parts by weight: 100 parts of PVC resin powder, 50-60 parts of a plasticizer, 5-10 parts of epoxidized soybean oil, 0.6-1.5 parts of a composite heat stabilizer, 0.4-6 parts of an elastomer, 0.4-0.8 part of a processing aid and 0.1-0.4 part of a lubricant, and the granules are obtained by pre-plasticizing the raw materials, performing melt extrusion through an extruder and performing granulation molding. A high-elasticity and high-stability medical catheter body can be obtained by carrying out melting secondary extrusion molding on the granules, a medical catheter product can be obtained by assembling the catheter body, and the medical catheter product comprises infusion, nursing or implantation intervention type medical catheters. The high-elasticity and high-stability PVC aggregate has excellent elasticity, tensile toughness, thermal stability and long-term stability, and can endow a catheter with excellent elasticity and stability when being applied to medical catheter products.

The invention discloses a production method and a production system of hexamethylenediamine. The production method of hexamethylenediamine comprises the following steps: mixing raw materials in a premixer and then feeding them into a reactor, introducing hydrogen into the reactor for reaction; water and ethanol in the gas phase at the top of the reactor are condensed by a gas phase condenser and then flow back into the reactor, and the hydrogen in the gas phase at the top of the reactor is compressed and then fed into the reactor again to participate in the reaction; the material containing the catalyst at the bottom of the reactor is fed into a catalyst recovery tank for treatment; the material obtained from the reactor is filtered by a filter and then fed into a dealcoholization tower preheater; the material enters the dealcoholization tower after passing through the dealcoholization tower preheater, and the material is sent into a phase separator after the ethanol is removed from the dealcoholization tower through the dealcoholization tower preheater, and in the phase separator, the material is separated from the sodium hydroxide aqueous solution, and the separated material is dehydrated and subjected to a series of heavy and light removal treatments to obtain a finished product. The method of the invention has improved reaction yield, less side reactions, and a long system operation time.