56results about How to "Low moisture absorption" patented technology

The invention discloses a pre-encapsulation protective cap assembly with a sublimation channel and a drug delivery device and method, the pre-encapsulation protective cap assembly comprises a shell and a rubber plug located in the shell, the hard shell is provided with a fastening structure, an anti-skid structure, an exhaust channel, a rubber plug inner cavity, a limiting buckle and a limiting boss, and the rubber plug is provided with a sealing lantern ring, a first limiting clamping groove and a second limiting clamping groove. The elastic body rubber plug sealing lantern ring keeps elastic contact and friction connection with the medicine outlet to form sealing, the hard shell protectively seals the elastic body rubber plug in an elastic contact, friction connection and clamping groove limiting mode, and meanwhile a fastening structure of the hard shell is connected with a needle head connecting part of the medicine outlet to guarantee sealing. When administration is needed, the shell is separated from the connecting part of the needle head, and the rubber plug can be separated from the medicine outlet of the needle tube at the same time.

The invention provides low-moisture-absorption and high-thermal-conductivity electrical-grade magnesium oxide and a preparation method thereof.The preparation method comprises the steps that silicon powder and silica sol are mixed to serve as coating slurry; carrying out coating treatment on the fused magnesium oxide by using the coating slurry, and then drying and screening to prepare silicon-coated fused magnesium oxide powder; the preparation method comprises the following steps: performing multi-stage preheating treatment and nitriding treatment on silicon-coated fused magnesium oxide powder in a nitrogen atmosphere, so that silicon powder on the surface of magnesium oxide is nitrided to form molten silicon nitride, and finally cooling and sizing to obtain high-temperature electrical-grade magnesium oxide powder with a spherical core-shell structure. The electrical grade magnesium oxide powder can resist high temperature and moisture, more importantly, the heat conduction performance of magnesium oxide is ensured, and the flowability and filling efficiency of the powder are improved.

The invention relates to a preparation method of a modified waste concrete recycled aggregate, which comprises the following steps: crushing waste concrete, screening the crushed waste concrete with a proper particle size to serve as a raw material of the recycled aggregate, washing with a shaking sieve to remove part of edges and corners about to fall off, and carrying out gelation reaction by using modified solutions such as nano silicon dioxide and water-soluble silicate to obtain the modified waste concrete recycled aggregate. According to the invention, fine pores on the surfaces of concrete particles are blocked and repaired, so that the structure is complete and compact, the mechanical strength of the aggregate is enhanced, the porosity and the water absorption rate are reduced, and the water absorption and the mechanical strength are further reduced through phenolic resin coating. The modified waste concrete recycled aggregate is mixed with cement, zeolite powder and the like, the mixture is pressed into a blank, and the artificial stone with excellent mechanical properties and low water absorption is obtained after carbonization curing. The method provided by the invention has good application prospects and environmental protection significance.

The invention discloses a pharmaceutical composition containing betaine phosphate, a preparation method of the pharmaceutical composition and application of the pharmaceutical composition in preparation of drugs for treating methylmalonic acidmia combined with homocysteinemia, and belongs to the technical field of betaine, the preparation method comprises the following steps: preparing betaine phosphate, and compounding; the compounding comprises the following steps: preparing hydroxyl calcium carbonate, performing primary compounding, performing secondary compounding and coating; according to the pharmaceutical composition containing the phosphate betaine, the treatment effect on methylmalonic acidmia combined with homocysteinemia can be guaranteed, meanwhile, the purity and yield of the phosphate betaine can be improved through the preparation method of the pharmaceutical composition containing the phosphate betaine, agglomeration of crystals of the phosphate betaine is avoided, and the purity of the phosphate betaine is improved. And the prepared pharmaceutical composition containing betaine phosphate has the advantages of weak moisture absorption, strong fluidity and good high temperature resistance.

The invention belongs to the technical field of wood processing, and relates to a rubber wood ENF-grade shaving board manufacturing process which comprises the steps of rubber wood chipping, flaking, wood shaving drying, screening, glue and waterproof agent mixing and applying, paving, pre-pressing, hot pressing, edge cutting, cooling, hardening and tempering, sanding, inspection and grading, and packaging and warehousing. Surface layer and core layer layered sizing is adopted, surface layer adhesives are acrylate adhesives, MDI and auxiliaries, core layer adhesives are MUF adhesives, MDI and auxiliaries, and the sizing amount is calculated according to the mass ratio of absolute dry glue to absolute dry wood shavings. The acrylic ester adhesive and the MDI do not contain formaldehyde, the MUF adhesive is low-formaldehyde MUF resin, on the basis that the manufactured shaving board meets the mechanical property index, the formaldehyde emission can reach the highest classification standard ENF level, and batch continuous production can be achieved; the assistant can reduce the moisture absorption of the rubber wood, effectively improve the mildew resistance, corrosion resistance and worm damage resistance of the wood, and prolong the service life of the wood.

This invention discloses a compound traditional Chinese medicine powder inhaler for respiratory tract infections and its preparation method, relating to the field of pharmaceutical formulation technology. The compound traditional Chinese medicine powder inhaler for respiratory tract infections is composed of polysaccharide composite gel microspheres, forsythia, scutellaria, honeysuckle, and isatis root. The polysaccharide composite gel microspheres are composed of seaweed sulfated polysaccharide, lentinan, calcium chloride, and curcumin. Seaweed sulfated polysaccharide, lentinan, curcumin, and calcium chloride cross-link to form a three-dimensional network spherical structure, improving the particle morphology and flowability of the micropowder. Furthermore, due to its good hygroscopic and moisturizing properties, it competitively reduces the moisture absorption of the micropowder, preventing aggregation and further improving flowability. In addition, the gel microspheres have excellent adhesion, adhering to the infection site after entering the respiratory tract, reducing expulsion losses due to respiration, maintaining an effective drug concentration at the infection site, and improving therapeutic efficacy.

The utility model discloses a moisture-proof bagging channel for solid materials, and relates to the technical field of packaging equipment. The solid material damp-proof bagging channel comprises a circulating conveying device, a packaging room, a drying device and a discharging device, wherein the packaging room, the drying device and the discharging device are sequentially arranged. The circulating conveying device sequentially penetrates through the packaging room, the drying device and the discharging device. Sealing shells are arranged on exposed sections of the circulating conveying device; a plurality of barrels are arranged on the circulating conveying device; the barrel moves on the circulating conveying device in a circulating mode and used for placing packaging bags before discharging. The solid material damp-proof bagging channel forms a closed and dry packaging space, and the problems that inorganic chemical products absorb moisture in the packaging link, and the cleanliness of a workshop is affected due to dust raising can be effectively solved.

The invention relates to the technical field of comprehensive utilization of ardealite, and particularly discloses a preparation method for producing large-particle ammonium sulfate by utilizing ardealite, which comprises six steps of raw material preparation and treatment, ammonium sulfate preparation, neutralization, evaporative crystallization, ammonium sulfate sphere preparation, finished product drying and the like. The ammonium sulfate crystal slurry separated out through complete crystallization is subjected to extrusion forming and pelletizing, and high-strength large-particle ammonium sulfate is formed through later drying, so that the production cost of large-particle ammonium sulfate is reduced, and the technical problem that ammonium sulfate produced from ardealite in the prior art is mostly powdery or small-particle ammonium sulfate crystals and is prone to caking in the transportation and storage process is solved.

The invention discloses bisphenol M cyanate ester and a preparation method thereof, and belongs to the technical field of cyanate ester resin, the bisphenol M cyanate ester comprises the following raw materials by weight: 100 parts of a bisphenol M cyanate resin monomer, 15-20 parts of thermosetting resin, 3-8 parts of modified hydrotalcite, 0.03-0.05 part of a catalyst, and 0.1-0.15 part of an accelerator. The preparation method comprises the following steps: S1, weighing the raw materials in parts by weight, adding the catalyst into the accelerant, and performing high-speed shearing dispersion to obtain dispersion liquid; s2, carrying out heating and stirring reaction on a bisphenol M cyanate monomer, thermosetting resin and the modified hydrotalcite to obtain a bisphenol M cyanate prepolymer; and S3, adding the dispersion liquid in the step S1 into the bisphenol M cyanate prepolymer, and stirring for reaction to obtain the bisphenol M cyanate resin. The bisphenol M cyanate ester resin prepared by the invention is excellent in mechanical property, good in heat resistance, low in moisture absorption rate and stable in size.

This invention belongs to the field of bamboo and wood tableware processing technology, specifically a method for preparing chopsticks using a purely physical carbonization process. This method includes steps such as raw material selection, bamboo splitting and skeining, high-temperature carbonization, moisture rebalancing, re-carbonization and conditioning, segmentation and sharpening / beveling, polishing, sorting, and sterilization. Through a composite treatment of primary carbonization, moisture rebalancing, secondary carbonization, and conditioning, this invention thoroughly decomposes and denatures the sugars, proteins, and other nutrients within the bamboo and wood, destroying conditions for mold growth. Simultaneously, the natural coloring occurs during carbonization, eliminating the need for sulfur fumigation and hydrogen peroxide bleaching. Combined with multiple physical polishing processes, this results in healthy chopsticks with a smooth surface, free of paint and wax, and with zero chemical residue. This invention's process is green and environmentally friendly, producing safe, non-toxic chopsticks with excellent mold resistance, dimensional stability, and resistance to deformation, meeting food contact material safety standards and possessing promising market application prospects.

The invention provides a preparation method of fructo-oligosaccharide, and belongs to the technical field of fructo-oligosaccharide synthesis. The method comprises the following steps: (1) preparing a reaction stock solution; (2) adding fructosyl transferase into the reaction stock solution, and then carrying out constant-temperature water bath reaction; supplementing the sugar solution in the reaction process to continue the reaction to obtain a first-process saccharified solution; (3) filtering the first-process saccharification liquid by adopting a semi-permeable membrane to obtain trapped fluid and filtrate; (4) performing a constant-temperature water bath reaction on the filtrate to obtain a second-process saccharification liquid, and then mixing the second-process saccharification liquid with the trapped fluid to obtain a fructo-oligosaccharide crude liquid; (5) carrying out decoloration, desalination, chromatographic separation, evaporation concentration and drying on the fructo-oligosaccharide crude liquid to prepare fructo-oligosaccharide powder; the reaction time is shortened, the utilization rate of fructose is increased, generation of kestose in a system is promoted, the content of kestose in fructo-oligosaccharide is increased, and the water activity of fructo-oligosaccharide is reduced.

The invention discloses a pure adhesive film and a preparation method thereof. The pure adhesive film comprises the following raw material components in parts by mass: 15-40 parts of low-Tg saturated polyester resin; 10 to 35 parts of high Tg saturated polyester resin; 5 to 20 parts of epoxy resin; 0.1-5 parts of a curing agent; 0.01 to 1 part of an accelerant; 10 to 30 parts of a flame retardant; 0.1 to 1 part of a coupling agent; 40 to 110 parts of a solvent; wherein the Tg value of the low-Tg saturated polyester resin is-10 DEG C to 20 DEG C; and the Tg value of the high Tg saturated polyester resin is 50-80 DEG C. The prepared pure adhesive film is excellent in stripping performance, shearing performance and aging resistance, and extremely low in moisture absorption rate.

The present application relates to the technical field of Dendrobium officinale, and particularly relates to Dendrobium officinale coated microparticles and a preparation method thereof. The present application separates the contact of Dendrobium officinale superfine powder with moisture and oxygen in the air through an outer coating film, reduces moisture absorption and oxidation, makes the property stable, and prevents caking, thereby solving the stability problem of Dendrobium officinale superfine powder, which is easy to absorb moisture and caking, and is easy to oxidize and reduce effectiveness. The Dendrobium officinale coated microparticles have small particle size, no grit feeling in oral administration, ensure the drug administration effect, and have good taking experience. The present application prepares Dendrobium officinale superfine powder into D 50 The present application separates the contact of Dendrobium officinale superfine powder with moisture and oxygen in the air through an outer coating film, reduces moisture absorption and oxidation, makes the property stable, and prevents caking, thereby solving the stability problem of Dendrobium officinale superfine powder, which is easy to absorb moisture and caking, and is easy to oxidize and reduce effectiveness. The Dendrobium officinale coated microparticles have small particle size, no grit feeling in oral administration, ensure the drug administration effect, and have good taking experience. The present application prepares Dendrobium officinale superfine powder into D

The high Tg acrylic copolymer comprises methyl methacrylate and one or more high Tg hydrophobic monomers. The copolymer comprises: a) at least one of tert-butylcyclohexyl methacrylate, 3, 3, 5-trimethylcyclohexyl (meth) acrylate, tetrahydrofurfuryl methacrylate, or a mixture thereof; and b) a (meth) acrylate monomer. The copolymer has the following properties: i) Tg from 116 DEG C to 140 DEG C; ii) a Mw of at least 110,000; and iii) a residual monomer level of less than 1.0 wt%. The copolymers exhibit high heat resistance, high light transmittance, low haze, low moisture absorption, excellent environmental stability, excellent high temperature thermal stability and excellent mechanical properties, as well as excellent uvioresistant properties. The high molecular weight hydrophobic copolymers of the present invention have excellent environmental stability required for electronic components in automobiles, displays, smartphones, photovoltaic cells, and the like.

The invention discloses a method for preparing a polyimide / melamine composite foam and a product. The preparation method of the invention comprises the following steps: dissolving an aromatic dibasic acid anhydride in an organic polar solvent, adding a small molecule monoalcohol and an aromatic diamine to react, and obtaining a polyimide precursor solution; immersing the washed and dried melamine foam in the polyimide precursor solution and vacuum treating it, and obtaining a melamine foam saturated with the polyimide precursor solution; immersing the melamine foam saturated with the polyimide precursor solution in water for solvent exchange, and then freeze-drying and imidizing it, and obtaining a polyimide / melamine composite foam. The preparation method of the invention is simple, and can produce a flexible composite foam with good heat resistance, good flame retardant effect, and excellent sound absorption performance.

The application discloses a high-strength and high-toughness Al-Ca-In series aluminum alloy low-oxygen spherical powder for additive manufacturing and a preparation method thereof, relates to the technical field of additive manufacturing powder, and comprises the following components in percentage by mass: 1.5-3.0% of magnesium, 0.15-0.60% of manganese, 1.0-2.0% of calcium, 0.06-0.25% of indium, 0.08-0.18% of zirconium and 0-0.05% of titanium, and the balance of aluminum and impurities, wherein the total oxygen is not more than 0.10%; the powder surface has a nitrogen-containing diffusion barrier layer with a thickness of 2-8 nanometers and an ultrathin oxide layer with a thickness of 0.5-2.0 nanometers in sequence, and the surface enrichment and interface capture indexes are limited; and the powder is prepared by high-temperature dissolution of manganese and zirconium, low-temperature segmented calcium addition, nitrogen-containing gas atomization and low-temperature micro-oxidation. The powder inhibits the surface migration and oxidation loss of calcium and indium, improves the component stability in recycling and forming, reduces defects and performance dispersion, and is suitable for the high-strength and high-toughness manufacturing consistency of thin-wall lattice load-bearing parts.

The invention discloses a temperature response material capable of being used for heating a cigarette filter stick, which has thermal response performance, is used for preparing the cigarette filter stick and comprises a temperature response air hole, the opening or the aperture of the temperature response air hole can be changed according to the change of temperature, and in a storage state, the temperature response air hole is in a micropore or closed state; when the cigarette is smoked, hot smoke passes through the cigarette, the temperature response air holes are heated, the hole diameters of the temperature response air holes are expanded, more air is introduced to be mixed with hot air flow, and the effects of reducing the smoke temperature and reducing suction resistance are achieved.

This invention relates to the field of advanced semiconductor packaging materials technology, and particularly to a low-modulus, high-strength, and low-moisture-absorbing epoxy resin composition and its preparation method. By weight, the epoxy resin composition comprises: 20-60 parts of MAR-type epoxy resin base material one, 15-40 parts of modified masterbatch, 0.01-5 parts of a first catalyst, 30-700 parts of silicon powder, 0-30 parts of additives, and 25-60 parts of curing agent; the modified masterbatch is prepared from: MAR-type epoxy resin base material two, a second catalyst, and HTPB; the curing agent is MAR-type phenolic resin. This invention introduces HTPB into the MAR-type resin system to create a synergistic effect, resulting in a packaging material with low modulus, high strength, and low moisture absorption. The obtained composition can achieve a moisture sensitivity level of MSL1, meeting the high reliability packaging requirements of DFN / QFN and other packaging forms.

The utility model discloses a kind of storage device of potassium hydroxide, including storage container, KOH input port, inert gas input port, circulating pump system, observation port, sealing unit, cooling unit and control module are equipped on storage container;The control module is connected with metal ion concentration sensor, temperature sensor, flow sensor and pH monitor;The control module is used to collect the above sensor data, controls circulating pump system and cooling unit operating state, adjusts soft water supply flow, and triggers early warning when parameter is abnormal, simultaneously, operating data is uploaded to remote platform.

The invention relates to the technical field of furan resin, in particular to high-strength furan resin as well as a preparation method and application thereof. The high-strength furan resin comprises the following components in parts by weight: 35-60 parts of furfuryl alcohol, 15-25 parts of formaldehyde, 5-10 parts of urea, 1-3 parts of a formaldehyde reducing agent and 3-5 parts of a cross-linking agent. The high-strength furan resin provided by the invention is high-performance furan resin with high mechanical strength, excellent moisture resistance and low free formaldehyde release, and has a wide application prospect in the field of casting. The introduced cross-linking agent can improve the cross-linking density, improve the tensile strength and avoid brittle failure. In addition, carboxyl in molecules of the cross-linking agent can adjust polarity and compatibility of the system, phase separation in storage and use processes is inhibited, and the storage stability of the resin is remarkably improved. The formaldehyde reducing agent introduced by the invention can be subjected to nucleophilic addition reaction with free formaldehyde in a system, so that the formaldehyde content can be efficiently and enduringly reduced, and the production and use environment can be improved.

This utility model discloses a detachable aseptic spray drying collection device, relating to the field of spray drying material collection technology. It includes a bottle body with a sealing valve at the top. By fitting the outer wall of a sealing sleeve onto the inner wall of a feed column, the ring plate fixed to the outer wall of the sealing sleeve engages with the inner wall of the ring groove. This allows workers to quickly seal the bottle body using the sealing valve, separating the device from the feed pipe, effectively isolating airflow, significantly reducing material volatilization, dispersion, and moisture absorption during collection and transfer, improving yield, and reducing environmental and cross-contamination. By matching the inner wall of the sealing valve with the outer wall of the sealing ring, the inner wall of the sealing valve abuts against the top of the bottle body. A support plate slides on the outer wall of the bottle body until its top abuts against the bottom of the sealing ring, facilitating control of the sealing valve's sealing of the channel between the bottle body and the feed column to prevent material overflow from the bottle body.

The present invention discloses a chip stacking packaging film, a preparation method and application thereof, wherein the raw materials of the chip stacking packaging film include: 40 to 45 parts by mass of inorganic filler, 22 to 25 parts by mass of polyether modified epoxy resin, 15 to 17 parts by mass of acrylic rubber modified epoxy resin, 5 to 15 parts by mass of CTBN modified epoxy resin, 10 to 12 parts by mass of bisphenol F type epoxy resin, 10 to 15 parts by mass of bisphenol F type benzoxazine, 2 to 6 parts by mass of curing agent, and 0.4 to 0.8 parts by mass of accelerator. The chip stacking packaging film of the present invention has excellent flexibility, fluidity and silicon wafer adhesion, as well as low storage modulus and low moisture absorption rate, and can be applied to multi-chip stacking packaging.

The invention provides a preparation method of quaternary coated superfine ammonium perchlorate. Comprising the following steps: step 1, carrying out ball milling treatment on coarse-particle ammonium perchlorate to obtain superfine ammonium perchlorate powder; step 2, performing quaternary coating on the superfine ammonium perchlorate powder: (1) dissolving nitrocotton, fluororubber, 2, 4-dinitroanisole and octadecylamine in a mixed azeotropic solvent composed of acetone and ethyl acetate to obtain a solution A; (2) adding nano graphite and superfine ammonium perchlorate powder into the solution A, and performing ultrasonic treatment and stirring to obtain a muddy mixture; and (3) putting the muddy mixture into a culture dish, and drying in a water bath drying oven. The quaternary coating treatment method adopted by the invention is very effective for reducing the sensitivity of the superfine AP, and particularly, the friction sensitivity is greatly reduced; in addition, the quaternary coating treatment is also very effective for reducing the moisture absorption of the AP; but the energy performance and the inner ballistic performance of the propellant are hardly influenced.

The invention provides a fiber composite membrane material with humidification and dehumidification functions and a preparation method and application thereof, and belongs to the technical field of composite membrane materials.The fiber composite membrane material comprises non-woven fabric made of polyester fibers and a drying agent, and the polyester fibers are porous polyester staple fibers; the drying agent is uniformly loaded and stably fixed on the surface of the porous polyester fiber, the inner wall of the porous structure and in fiber gaps of the non-woven fabric. According to the fiber composite membrane material, the non-woven fabric made of the polyester fibers of the porous structure serves as a base material, the porous structure enables liquid water to be rapidly diffused, the low hygroscopicity of the polyester is combined, the liquid water is easy to desorb, and the humidification rate is increased; meanwhile, the porous structure of the porous polyester fiber serves as a loading site of the drying agent, leakage of the liquid drying agent is prevented while efficient dehumidification is achieved, the stability of the base body non-woven fabric material can be improved through the coated porous polymeric membrane, and the porous polymeric membrane can also serve as a second barrier for preventing leakage of the liquid drying agent; therefore, the fiber composite membrane material has humidifying and dehumidifying functions.

The present invention discloses a high-strength glass precursor microsphere that is not easy to absorb moisture, and a preparation method and application thereof, and the present invention relates to the technical field of soft chemical methods. The microsphere comprises the following raw materials: silica sol, salt and boric acid; wherein the salt is acetate and nitrate, the molar ratio of acetate in acetate and nitrate in nitrate is 3-5:1, the mass ratio of boric acid to silica sol is 6-8:100, and the mass ratio of salt to boric acid is 44-58:6-8. The glass precursor microsphere of the present invention is not easy to be crushed or deformed without adding a stabilizer or a polymer binder, and is not easy to absorb moisture in the air, and can last for up to two months without hardening. The present invention solves the problems that the glass precursor particles prepared by the prior art are easy to absorb moisture, have low strength and high energy consumption in the preparation process.

The present invention provides an automatically opening composite material and clothing. An automatically opening composite material, the automatically opening composite material comprises a fabric layer, a cutout and a composite layer group, the cutout and the composite layer group are placed on the fabric layer, the composite layer group comprises: a hydrophilic functional layer, the moisture absorption rate of the hydrophilic functional layer is higher than that of ordinary materials; a hydrophobic functional layer, the moisture absorption rate of the hydrophobic functional layer is lower than that of ordinary materials; an adhesive film, the adhesive film glues the composite layer group into one; wherein, when the fabric layer at the position of the composite layer group is in a dry environment, the cutout is in a closed state; when the fabric layer at the position of the composite layer group is in a humid environment, the cutout is in an open state. The structural design of the present invention is ingenious, when the composite material is humid or the human body sweats, the cutout automatically opens, increasing the contact area between the skin and the outside air, facilitating the evaporation of sweat and the dissipation of heat, and improving the wearing comfort of the clothing.

The invention relates to the technical field of polymer foam materials, in particular to a low-density large-size polyimide foam material and a preparation method thereof. According to the invention, aromatic dianhydride, a polar solvent and low-molecular alcohol are used as reaction raw materials, an initiator, a catalyst, a surfactant, a foaming agent, isocyanate and a curing agent are used as auxiliary materials for foaming, then heating is carried out by a drying oven for shaping, and then drying is carried out to obtain the product. The preparation process is simple, the manufacturing cost is low, polyimide is low in density and large in size, industrial production is easy, and the prepared polyimide foam material has the advantages of being low in heat conductivity coefficient, excellent in flame retardant property, small in moisture absorption rate, good in corrosion resistance, resistant to smoke, resistant to mildew, good in sound absorption and the like.

The invention discloses a high-durability string truss structure. The high-durability string truss structure comprises an upright quadrangular pyramid truss; the invention discloses an external prestress basalt fiber reinforced composite inhaul cable. The supporting rod is shared by the orthogonal prestress inhaul cables, and the surface of the steel structure is coated with the high-toughness concrete. The periphery of the net rack is supported on the steel columns. The tops of the supporting rods are connected with the net rack through bolt balls, and the bottoms of the supporting rods are connected with the prestressed inhaul cables through cast steel cable clamps. And the end part of the inhaul cable is connected with the support through an anchorage device. And the outer surface of the steel skeleton is coated with a layer of high-toughness concrete of which the thickness is not more than 10mm. The structural form provided by the invention is simple and attractive, and meanwhile, the stability and the safety of the structure can be greatly improved; the structure allowable span is large, so that the number of stand columns and foundations is reduced, the construction cost is reduced, and the construction speed is increased; the steel framework and the prestressed basalt fiber reinforced composite inhaul cable are coated with the high-toughness concrete, so that the durability of the structure is effectively improved.

The present invention relates to the technical field of production process of traditional Chinese medicine composition, and discloses a stomach-relieving and analgesic composition capsule and a large-scale preparation method thereof, wherein the medicinal raw materials include 80-120 parts of coptis root, 50-70 parts of amomum villosum, 80-120 parts of bupleurum, 80-120 parts of dandelion, 80-120 parts of corydalis, 40-60 parts of evodia rutaecarpa, 80-120 parts of rhubarb, 80-120 parts of costusroot and 25-35 parts of clove. The present invention adopts acidic conditions percolation extraction, cyclodextrin inclusion of volatile oil, alkali precipitation and filtrate drying in sequence, and fills the capsules after mixing the inclusion compound and powder. In the whole process, no large-scale energy consumption is required, which reduces the production cost and greatly improves the production efficiency; it also solves the technical problems of low yield of berberine in the existing extraction of coptis root, and reducing the berberine content in the product and the utilization rate of coptis root due to the compatibility reaction of berberine with other components, effectively improving the content of berberine in the medicine, and improving the quality and efficacy of the medicine.

According to the cigarette wrapping material and the heating cigarette provided by the invention, the cigarette wrapping material is formed by compounding a single thermosensitive structural layer or multiple thermosensitive structural layers, the cigarette wrapping material serving as the wrapping material for heating a cigarette core is used in the heating cigarette, and the opening and closing states of the air holes of the cigarette core section can be changed according to the temperature change. When the cigarette is not heated, the temperature is low, the air holes are in a closed state, moisture entering the environment can be reduced, tobacco shreds can be kept dry, and moisture absorption of the cigarette is slowed down; during heating, the temperature rises, the air holes are opened, convection between the cigarette and the surrounding environment is increased, and heat dissipation of the cigarette and reduction of suction resistance are facilitated.