104results about How to "Excellent gas barrier" patented technology

The invention discloses a packaging method of a sodium bicarbonate injection, which comprises the following steps: filling the sodium bicarbonate injection into a plastic container; charging carbon dioxide gas into the plastic container; sealing the plastic container filled and charged with the sodium bicarbonate injection and the carbon dioxide gas; sterilizing the sealed plastic container; and sealing the sterilized sealed plastic container in a choke protection bag. The manufacturing cost of a packaging bag manufactured by the packaging method is greatly reduced.

The invention discloses a medical paper-plastic composite blue film and a preparation method thereof, the medical paper-plastic composite blue film is formed by combining a biaxially orientated polyester film which is printed and coated and a cast polypropylene film, the cast polypropylene film is divided into three layers of a corona layer, an intermediate layer and a heat seal layer, the raw material component of the corona layer is additive-free binary copolymer propylene resin RF401, the raw material components of the intermediate layer are 85-95% of binary random copolymer polypropylene resin F800E and 5-15% of ethylene-butene elastomer A-4085S, and the raw material components of the heat seal layer are 85-90% of binary copolymer propylene resin RF402 containing anti-sticky slipping agent, 5-15% of ethylene-butene elastomer A-4085S, 1-2% of inorganic anti-sticky agent ABPP10S and 0.5-1.5% of slip modified masterbatch SE07PP. The preparation method comprises the steps of printing, preparation of the cast polypropylene film, combination of the biaxially orientated polyester film and the cast polypropylene film and cutting. The medical paper-plastic composite blue film is matched with medical packing paper which can carry out heat sealing, steam sterilization and air infiltration blocking for carrying out packing of medical items, thereby reducing the packing cost and realizing safety performance of packing applications and environment-friendly treatment of packing wastes.

The invention provides a preparation method of a nanometer organic modified zirconium phosphate/MC nylon composite material, wherein organic zirconium phosphate, a caprolactam monomer, a catalyst, an initiator and a silane coupling agent are subjected to a reaction to obtain the nanometer organic modified zirconium phosphate/MC nylon composite material. According to the preparation method, alpha-zirconium phosphate is modified with n-butylamine and a Gemini surfactant, and then a co-precipitation method is performed to obtain the organic zirconium phosphate; the organic zirconium phosphate is subjected to high speed dispersion with the caprolactam monomer; the silane coupling agent and the catalyst are added; operations such as heating, high speed stirring and thermal insulation are performed, the obtained material is mixed with the caprolactam monomer added with the initiator after the melting, the obtained mixture is transferred into a mold, the mold is placed into an oven, the temperature is adjusted, and a thermal insulation reaction is performed; and cooling demolding is performed to obtain the nanometer organic modified zirconium phosphate/MC nylon composite material.

The invention aims to improve the balance of the low temperature durability, gas barrier property, and melt processability of a thermoplastic elastomer composition comprising an aliphatic polyamide resin in which an ethylene-based modifying polymer is dispersed, a thermoplastic elastomer composition comprising a thermoplastic resin composition (A) and a modified ethylene-based modifying polymer (B) graft modified with acid anhydride groups, wherein the thermoplastic resin composition (A) comprises 60 to 90 percent by weight of a layered silicate modified aliphatic polyamide resin (A1) prepared by an interlayer polymerization method and 10 to 40 percent by weight of a hydrophobic plasticizer (A2) having a solubility parameter (SP value) of 10 to 12 (cal/cm<2>)<1/2>, the modified ethylene-based modifying polymer (B) is 70 of 120 parts by weight based on 100 parts by weight of the thermoplastic elastomer composition, and the modified ethylene-based modifying polymer (B) forms a dispersedparticle phase.

The invention provides a preparation method of polyester polyol for a laminated film adhesive. The preparation method comprises steps as follows: primary feeding is performed, 25.0%-35.0% of aromaticbinary carboxylic acid and 25.0%-40.0% of small-molecular diol are fed into a reaction kettle, programed heating is executed to promote esterification reaction, and after an acid value is reduced to 10-30 mgKOH/g, cooling is performed for secondary feeding; 25.0%-40.0% of aromatic binary carboxylic acid and 5.0%-15.0% of small-molecular diol are subjected to secondary feeding, the temperature is increased again, the esterification reaction is performed, water is produced, a tetrabutyl titanate or stannous octoate catalyst is added, programed heating and programmed vacuum are controlled, and atarget polyester polyol product containing both benzene ring aromatics and aliphatic hydrocarbon is obtained; the target polyester polyol product is primary hydroxyl terminated difunctional polyol andhas higher reactivity with isocyanate groups. The polyurethane adhesive prepared from polyester polyol as a main soft segment through polymerization is suitable for adhesion of food packaging laminated films which meet the high-temperature requirement and have steaming resistance for sterilization.

The invention relates to a high-transparent high-barrier and easy-taking opening sealing cover membrane and a production technology thereof. The membrane layer structure of the membrane sequentially comprises a PET membrane layer, an alumina coating layer, an oil ink layer, an adhesive layer and an EVOH co-extrusion membrane layer from outside to inside; and the EVOH co-extrusion membrane layer comprises a compound layer A, a sub outer layer B, a binding layer C, a middle layer D, a binding layer E, a sub outer layer F and a hot sealing layer G. The high-transparent high-barrier and easy-taking opening sealing cover membrane is obtained through innovation on the EVOH co-extrusion membrane layer formula. The membrane product has the high transparency and low haze, can well display the packed content and attracts consumers. The alumina coating PET and the EVOH co-extrusion membrane layer jointly form a double-barrier layer, so that the membrane has the outstanding moisturizing, air barrier and fragrance preserving functions, and provides safety guarantee to food. A polybutylene easy-taking layer in the hot sealing layer G can be well sealed with various kinds of materials such as PP,PE and PS, the controllable peeling strength can be guaranteed, and the user experience of the consumers is greatly improved.

The invention provides an egg product freshness keeping method by means of double layers of nano-antibacterial coating films. The method comprises the steps that a PVA-whey protein nano-antibacterial coating film solution and a chitosan-PVA nano-antibacterial coating film solution are prepared separately; egg products are steeped in the prepared PVA-whey protein nano-antibacterial coating film solution, naturally air-dried, steeped in the prepared chitosan-PVA nano-antibacterial coating film solution, air-dried and then packaged for storage. According to the egg product freshness keeping method by means of double layers of the nano-antibacterial coating films, safe, nontoxic and degradable materials serve as coating film freshness keeping substrates to perform double-layer film coating treatment on the egg products, therefore, the safety of the product is improved, and the shelf life of the egg products is effectively prolonged. The method is beneficial for improving the quality of the egg products and increasing the economic benefits of egg product industry, easy and convenient to operate and low in production energy consumption and has a good application prospect.

The invention discloses a method for coating preservation of Litchi chinensis bacterium by phellinus igniarius polysaccharide. The method comprises the following steps: classifying the harvested Litchi chinensis bacterium, picking the Litchi chinensis bacterium consistent in maturity and sizes and free of mechanical damage and plant diseases and insect pests, and soaking in a phellinus igniarius polysaccharide solution of which the concentration is 0.8 to 1.2% for 2 to 6min, carrying out air drying by cold air until the surfaces of the Litchi chinensis bacterium are dried and formed by films and then performing preservation at the temperature of 4 DEG C. The invention further discloses a preservation method of the Litchi chinensis bacterium by fumigating the phellinus igniarius polysaccharide solution on the surfaces of the Litchi chinensis bacterium, and further discloses a method for extracting the phellinus igniarius polysaccharide solution. In addition, the invention has the beneficial effects of lowering the respiration rate of the Litchi chinensis bacterium, inhibiting the activity of polyphenol oxidase of the Litchi chinensis bacterium, reducing internal moisture evaporation, delaying aging and having low cost and long preservation time; furthermore, the phellinus igniarius polysaccharide is high in nutritional values and has a variety of biological activities of oxidation resistance, immunity enhancement, tumor resistance and the like, and the films are coated on the surfaces of the Litchi chinensis bacterium, and free of any toxic and side effects to human bodies, thereby being natural and environment-friendly.

This composite gas barrier laminate is formed by bonding a gas barrier laminate (A) provided with an alicyclic polyolefin resin film (a) and an inorganic layer (a) formed on at least one surface of the film (a), and a gas barrier laminate (B) provided with an alicyclic polyolefin resin film (b) and an inorganic layer (b) formed on at least one surface of the film (b), via a styrene thermoplastic elastomer resin layer in such a manner that the inorganic layer (a) and the inorganic layer (b) face each other.

The invention discloses a novel crossed composite membrane which is provided with an upper outer layer, a lower outer layer and an intermediate core layer, wherein the core layer and the outer layers are compounded into a whole through an adhesive layer, and at least one outer layer is an orientation membrane layer which is arranged between the fiber direction and the membrane edge and provided with an orientation angle; the core layer is made of polyethylene glycol terephthalate (PET), wherein the density of the core layer is 1.395 to 1.405g/cm<3>, and the thickness thereof is 10 to 50mu m; an adhesive in the adhesive layer is one of a one-component polyurethane adhesive, a double-component polyurethane adhesive, an alcohol-soluble polyurethane adhesive and a water-soluble polyurethane adhesive; the two outer rings are made of one material selected from low-density polyethylene (LDPE), high-density polyethylene (HDPE) and casting polypropylene (CPP) and also can be made by mixing two or more than two materials selected from the LDPE, the HDPE, the CPP and metallocene polyethylene (mPE). Except for wide heat-sealing temperature range as well as favorable barrier property, tensile strength and printing effect, the composite membrane has the most remarkable tearing resistance property.

The invention discloses a hydrophilic water transport plate for an integrated renewable proton exchange membrane fuel cell and a preparation method for the water transport plate. The method comprises the steps of firstly hydrophilically treating a carbon nanomaterial; secondly uniformly mixing the hydrophilically treated carbon nanomaterial, a conductive additive, a reinforced carbon fiber and a resin adhesive; and finally performing thermoforming in a mould to obtain the hydrophilic water transport plate, wherein the hydrophilic carbon nanomaterial achieves the effect of promoting water transport. The water transport plate serving as a bipolar plate for the integrated renewable proton exchange membrane fuel cell has good water-penetrating property; and the situations of water shortage and flooding in a working mode of the fuel cell can be effectively relieved, the performance of the fuel cell can be improved, the static water supply can be realized directly by utilizing cooling water in a working mode of an electrolytic tank, the anodic concentration polarization phenomena can be reduced, the electrolytic performance under high electric density can be improved, a system can be simplified, and the energy consumption can be reduced.

The purpose of the invention is to provide a gas barrier film having excellent gas barrier characteristics. This gas barrier film includes, on at least one surface of a polymer base material, a gas barrier layer in which a first layer including zinc oxide and silicon dioxide and a second layer including a silicon compound are arranged in contact with one another in this order from the polymer base material, wherein the binding energy of the Si 2p orbit at the interface between the first layer and the second layer as measured by X-ray photoelectron spectroscopy is greater than the binding energy of the Si 2p orbit in the first layer and is smaller than the binding energy of the Si 2p orbit in the second layer.

This aqueous coating agent contains as primary constituent components: an aqueous polyurethane resin (A) containing a polyamine compound and a polyurethane resin having an acid group; an aqueous polymer (B); and an inorganic lamellar mineral (C). Of the entirety of the solid components the share contained of the aqueous polyurethane resin (A) is 50-80 mass%, of the aqueous polymer (B) is 5-20 mass%, and of the inorganic lamellar mineral (C) is 10-30 mass%. The concentration of the entirety of the solid components is at least 5 mass%, and the viscosity at 23°C is no greater than 50 mPa·s.

The invention provides a halogen-free flame-retardant PET (polyethylene terephthalate) material. The halogen-free flame-retardant PET material contains the following components in parts by weight: 40-60 parts of PET, 25-40 parts of halogen-free phosphorus-based copolyester flame retardant, 3-7 parts of auxiliary flame retardant, 5-20 parts of glass fiber, 1-3 parts of compatibilizer, 0.1-1 part ofcoupling agent and 0.5-2 parts of antioxidant II. A high-efficiency P-containing flame retardant is synthesized through polymerization reaction; and the presence of a P flame retardance element can improve the flame retardance of the polymer in a mode of changing the thermal degradation process of a polymer matrix and the like; the flame retardance stability of the polymer is further improved through the compounding of the P-containing flame retardant, and P and N flame retardance auxiliaries; and then the halogen-free flame-retardant PET material is prepared through the selection and dosagecontrol of reaction auxiliaries and the like. The halogen-free flame-retardant PET material prepared by the method has an excellent flame retardance effect, excellent mechanical property, high and lowtemperature resistance, chemical resistance and excellent resistance to gas, water, oil, peculiar smell and the like.

Provided is an addition reaction cured resin composition characterized by comprising an organic cyclic compound (A) each molecule of which contains more than two functional groups reacting with SiH base through hydrosilylation reaction; a straight chain organic organopolysiloxane (B) each molecule of which contains at least two silicon bonding alkenyl reacting with the SiH base and having at least one silicon bonding aryl; organic polysiloxane (C) each molecule of which contains at least two SiH base and at least having branch chain organic polysiloxane; and a curing catalyst (D) required by addition reaction.