19results about How to "Low moisture absorption" patented technology

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.

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 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 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.

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 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 utility model discloses a kind of damp-proof non-woven fabric packaging bags, including composite non-woven bag, the bottom of composite non-woven bag is fixed with silica gel damp-proof pad, the inside bottom end of composite non-woven bag is fixed with polyethylene damp-proof sheet, large magic tape is installed in the inside upper end of composite non-woven bag, active moisture-absorbing mechanism is detachably installed in composite non-woven bag.The utility model is through the three-layer composite structure of waterproof needling PP non-woven fabric outer layer, ethylene-vinyl alcohol copolymer middle layer, moisture-absorbing type spunbonded PP non-woven fabric inner layer, realize the multiple passive damp-proof of external water retaining, intermediate moisture resistance, internal moisture absorption;Collaborate bottom outer silica gel damp-proof pad and inner polyethylene damp-proof sheet, both enhance bottom damp-proof property and improve bearing strength;With the help of large magic tape, bag mouth is sealed to reduce external water vapor into, and detachable active moisture-absorbing mechanism can actively absorb bag moisture, so that overall has good damp-proof effect.

The invention discloses a thermal insulation material for ultralow-energy-consumption system doors and windows and a preparation method of the thermal insulation material, and relates to the technical field of high polymer materials. The heat insulation material for the door and window of the ultra-low energy consumption system at least comprises the following raw materials in parts by mass: 55-65 parts of PA66 resin; 8 to 15 parts of thermoplastic polyurethane and 5 to 10 parts of polyamide-imide; 18 to 25 parts of activated chopped glass fiber; 3-6 parts of modified nano silicon dioxide coated aerogel microbead heat insulation filler; 2 to 5 parts of a diethyl aluminum phosphinate flame retardant coated with melamine cyanurate; 1-3 parts of a microcapsule expanded graphite flame retardant; 0.3 to 0.8 part of an antioxidant; 0.2 to 0.5 part of a light stabilizer; and 0.5-1 part of a lubricant. The thermal insulation material prepared by the invention has the advantages of ultralow thermal conductivity, efficient flame retardance, low smoke, no toxicity, high dimensional stability and excellent mechanical properties.

This invention discloses a method for preparing a nano high-frequency high-speed substrate; belonging to the field of copper clad laminate substrate preparation technology; its key technical points include the following steps: (1) Mixing: Weigh 50-60 parts of liquid crystal bismaleimide / diallyl diphenyl ether copolymer, 20-30 parts of organic solvent, 17.5-30 parts of modified hexagonal nano boron nitride sheet KH570-BNNSs suspension, 1-2 parts of flame retardant, 0.2-0.5 parts of curing agent and 0.5-1.0 parts of coupling agent and pass through a mixture at 1500 rpm. (1) High-frequency high-speed adhesive is obtained by high-speed stirring for 2-4 hours; (2) Adhesive application: the low dielectric constant glass fiber cloth is unwound, initially impregnated with the high-frequency high-speed adhesive, and then impregnated on one side before being mainly impregnated to remove the air in the low dielectric constant glass fiber cloth. Then, it is extruded and dried in sequence to obtain a semi-cured sheet; (3) Assembly; (4) Pressing; The present invention aims to provide a method for preparing a nano high-frequency high-speed substrate with a scientific preparation method, high substrate strength and low water absorption rate; used for the preparation of copper clad laminate substrates.

The invention discloses a high-temperature-resistant hot melt adhesive and a preparation method thereof, and relates to the technical field of hot melt adhesives. The high-temperature-resistant hot melt adhesive is prepared from the following raw materials in parts by weight: 25 to 35 parts of modified polyimide resin, 20 to 30 parts of modified benzoxazine resin, 8 to 12 parts of carboxyl-terminated nitrile rubber, 5 to 8 parts of C5 / C9 copolymerized petroleum resin, 3 to 5 parts of hydrophobic modified nano silicon dioxide, 1 to 2 parts of silicone powder, 0.5 to 1.0 part of antioxidant 1010, 0.3 to 0.8 part of zinc stearate and 0.05 to 0.1 part of tetrabutylammonium bromide. The high-temperature-resistant hot melt adhesive is scientific in raw material ratio, core resin is modified to improve heat resistance and compatibility, filler such as hydrophobic nano silicon dioxide is added to enhance performance, the preparation process is controllable, nitrogen protection is achieved in the whole process, moisture absorption is prevented through granulation and drying treatment, and a finished product is excellent in high-temperature resistance, good in comprehensive performance and good in storage stability.

The invention relates to modified ammonium polyphosphate as well as a preparation method and application thereof, belongs to the technical field of fire extinguishing products, and is used for solving at least one of the problems that the flame-retardant efficiency of ammonium polyphosphate prepared by the existing method is reduced, the cost is high, long-acting anti-caking cannot be realized, the solubility is poor and the like. The modified ammonium polyphosphate is prepared by coating ammonium polyphosphate with a macromolecular silane coupling agent, and after APP is coated with the macromolecular silane coupling agent, the caking rate is reduced, and the dissolving capacity is not affected. The hydrophobic chain segment in the macromolecular silane coupling agent synthesized by the invention is longer than that of monomolecular silane, so that the infiltration of small water drops on the surface of APP can be reduced, and the macromolecular silane coupling agent has a better hydrophobic effect; and a longer hydrophobic chain segment has an interference effect on the formation of a crystal bridge, so that the strength of the formed crystal bridge is reduced, and the caking of the APP powder is more easily damaged. The dissolving capacity is improved, the combination of the macromolecular silane coupling agent and the APP powder is only limited to the combination site of the macromolecular silane coupling agent and the APP powder, dispersion in the APP powder is more uniform, and the dissolving capacity is improved.

The invention provides bio-based succinic acid particles as well as a preparation method and application thereof. The D10 particle size of the bio-based succinic acid particles is 150-300 [mu] m, the D50 particle size of the bio-based succinic acid particles is 300-500 [mu] m, and the D90 particle size of the bio-based succinic acid particles is 500-800 [mu] m. The D10, D50 and D90 particle sizes of the bio-based succinic acid particles are within a specific range, on one hand, the problems of dust raising, inhalation and the like of traditional succinic acid fine powder in application are solved, on the other hand, the moisture absorption rate of the bio-based succinic acid particles is remarkably reduced, the problem of agglomeration and caking in long-term storage is avoided, and the storage performance and downstream application performance are improved; the bio-based succinic acid particles have good processability, and polyester prepared from the bio-based succinic acid particles has excellent mechanical properties.

This invention provides a coloring photosensitive resin composition and its application. The coloring photosensitive resin composition comprises an alkali-soluble resin, a photosensitive compound, a colorant, a first crosslinking agent, and a second crosslinking agent. The first crosslinking agent has a structure as shown in Formula I, and the second crosslinking agent has a structure as shown in Formula II. Through the design of the first and second crosslinking agents and their mutual compounding with other components, this invention enables the formation of a rich crosslinked network structure after high-temperature curing, reducing the hydroxyl content and significantly lowering the moisture absorption rate of the resulting coloring-cured film. Furthermore, the coloring-cured film exhibits significantly improved heat resistance, chemical corrosion resistance, water vapor corrosion resistance, mechanical strength, and barrier properties, thereby increasing the yield of display devices containing it and providing advantages such as good heat resistance, high reliability, and high pixel stability.

This invention provides a composition for improving bone density, its preparation method, application, and product, belonging to the technical field of bone and joint health products. The composition for improving bone density comprises the following components in parts by weight: 0.1-70 parts collagen peptides; 0.01-2 parts casein phosphopeptides; 7-40 parts milk mineral salts; 0.5-40 parts fructooligosaccharides; and 0.01-1 parts vitamin D. In the composition provided by this invention, the casein phosphopeptides, vitamin D, fructooligosaccharides, collagen peptides, and milk mineral salts can interact to increase bone calcium and bone density, thus preventing or improving osteoporosis.

The application provides a sealing strip with a bidirectional stretching nylon-EVOH composite film as a base material and a preparation method, the sealing strip comprising a first nylon layer, a first composite layer, an EVOH barrier layer, a second composite layer and a second nylon layer; wherein the first composite layer and the second composite layer are EVOH and nylon 6 composite layers; and the first nylon layer and the second nylon layer are silica and long carbon chain nylon composite layers. The EVOH and the nylon 6 are melt blended first, then the obtained composite layer is subjected to multilayer co-extrusion with the EVOH barrier layer and the nylon layer to obtain the bidirectional stretching nylon-EVOH composite film, and the sealing strip is prepared with the bidirectional stretching nylon-EVOH composite film as the base material, so that the barrier property and the mechanical property of the sealing strip are improved.

This invention discloses a method for preparing soft-particle starter feed based on low-temperature curing and microencapsulation, belonging to the field of livestock and poultry feed preparation technology. The method includes basic raw material pretreatment, low-temperature curing, mixing and blending, soft-particle molding, drying and cooling, and screening and packaging steps. The core lies in employing a process of "low-temperature curing + double-layer microencapsulation + soft-particle molding," combined with an excipient system composed of modified chitosan, sodium alginate, and attapulgite solution. Low-temperature curing preserves heat-sensitive nutrients and kills harmful microorganisms; double-layer microencapsulation enables targeted release of core functional components, ensuring their activity; soft-particle molding balances palatability and intestinal protection; and the various components of the excipients synergistically improve feed stability, probiotic colonization rate, and digestibility.