392 results about "Barrier effect" patented technology

The invention provides a container such as a bottle or flask, made heterogeneously from a material with a barrier effect and a polymer material, characterised in that the material with a barrier effect is an amorphous carbon material with a polymer tendency which is applied as a coating on a substrate of polymer material.

A premium threaded tubular connection including, on at least one threaded element, a distal abutment surface at the free end of a threaded element, and a lip sealing surface at a given distance from the threading. The lip includes an appendix that extends the lip towards its free end beyond the lip sealing surface so that the lip has both high radial stiffness and low axial stiffness. This results in enhanced performance as regards the seal of the threaded connection under pressure and/or under tension, and other advantages of precision of real makeup torque, mechanical strength in axial compression, a shock barrier effect, and tolerance in engaging the threaded elements.

Disclosed is an absorbent article elongated to have longitudinally opposed front and rear edges and transversely opposed left and right edges. The absorbent article includes a stack of: a backsheet having a liquid barrier effect; a liquid absorbent layer; a hydrophilic intermediate sheet including fibers; and a hydrophilic topsheet including fibers. The absorbent article has a central region of a predetermined width, which is spaced apart from the left and right edges and formed with a plurality of liquid passage holes continuously extending from the topsheet to the intermediate sheet.

The invention discloses an aerogel waterproof and heat-insulating coating as well as a preparation method thereof. The coating with fireproof and heat-insulating properties is prepared by adding aerogel powder and ceramic powder which are subjected to hydrophilic modification as well as adding aids and fillers according to different formula proportions, and the coating is prepared by utilizing theproperty characteristic of a three-dimensional network structure of the aerogel, so that the defect that the existing coating is only fireproof and is not heat-insulating is solved and the coating has the heat-insulating characteristic. Meanwhile, nanometer ceramic powder is added in the coating, the nanometer ceramic powder in the coating is heated to be ceramic, one expanded ceramic film is formed on the surface of a base material, one air layer is arranged between the film and the base material, contact between flame and the surface of a vehicle metal material product is isolated, and heatis prevented from being transmitted to the surface of the metal by depending on the low heat-conducting coefficient characteristic of the aerogel in the coating. Through fireproof and heat-insulatingsynergistic effect, good barrier effect on heat and flame is guaranteed to be achieved no matter normal use of the metal part in the vehicle or occurrence of extreme fire accidents, and the fireproofproperty of the coating is enhanced.

The present invention relates to a drug delivery device for implantation in a mammalian body comprising a solid polymeric material having a barrier effect against diffusion of an active compound and having a glass transition temperature within the range of about 0° to about 90° C. and an active compound, wherein the characteristics of diffusion or transport of the active compound can be modified in a reversible manner by supplying energy from an energy source. The present invention also relates to a method for releasing an active compound from a drug delivery device.

Provided are a thermal barrier coating material and a member coated with thermal barrier that can suppress the separation when used at a high temperature, and have a high thermal barrier effect; a method for manufacturing the member coated with thermal barrier; a turbine member coated with the thermal barrier coating material; and a gas turbine. More specifically provided are a shield coating member comprising a heat-resistant substrate, a bond coat layer formed on the heat-resistant substrate, and a ceramic layer formed on the bond coat layer, wherein the ceramic layer comprises a ceramic represented by a general formula A₂Zr₂O₇, wherein A denotes a rare earth element, and the ceramic layer has (a) a porosity of 1 to 30%, (b) cracks in a thickness direction in pitches of 5 to 100% the total thickness of layers other than the bond coat layer on the heat-resistant substrate, or (c) columnar crystals.

The invention provides a negative electrode plate for a lithium metal battery. Metallic lithium plates and sponges are compressed to obtain the negative electrode plate. The negative electrode plate has the advantages that the traditional lithium metal battery structures can be simplified when the negative electrode plate is applied to the lithium metal battery, electron barrier effects can be realized by sponge elastic interface layers instead of diaphragms, and volume change and the instability of interfaces inside the battery can be relieved by elastic interface materials in battery cycle;sponge medium layers are excellent in electrolyte solution wettability, and are high in thermal deformation resistance as compared with common polypropylene diaphragms; elastic three-dimensional framework structures of the sponges are favorable for inhibiting dendrite growth in lithium metal battery cycle procedures and relieving the volume change of negative electrodes, and accordingly further development of the lithium metal battery can be promoted from another angle by composite metal lithium negative electrodes which are designed by the aid of sponge materials and are free of diaphragm structures.

The invention relates to a coated high-barrier biaxially stretched polylactic acid film and a preparation method thereof. The coated high-barrier biaxial tensile polylactic acid film structurally comprises a high-barrier coating, a bottom coating and a substrate layer from inside to outside in sequence, wherein the substrate layer is composed of three layers of a co-extruded biaxially stretched PLA (polylactic acid) film, namely a layer A, a layer B and a layer C; the layer A and the layer C comprise the following components in parts by mass: 68-93.2 parts of PLA, 5-20 parts of a toughening agent, 1-3 parts of a compatibilizer, 0.2-1 part of a chain extender, 0.2-1 part of an antioxidant, 0.5-3 parts of an antistatic agent, 0-1 part of an open agent and 0-1 part of a smoothening agent; thelayer B comprises the following components in parts by mass: 76-93.8 parts of PLA, 5-20 parts of a toughened resin, 1-3 parts of a compatibilizer and 0.2-1 part of a chain extender; and the high barrier coating is a water-resistant modified PVA coating. Production procedures are simple, green and environmental protection materials are used, and the film is excellent in performance, and still hasa good barrier effect in case of a very thin high-barrier coating.

The invention relates to a melt blending modification of polyurethane resin material, in particular to a graphene-silica hybrid material and a method for preparing a polyurethane based nanocomposite. The graphene-silica hybrid material is obtained through reaction of graphene oxide, silicon dioxide and 3- aminopropyltriethoxysilane; functional 3-aminopropyltriethoxysilane monomers is a bridge for linking silica and graphene oxide; the nanocomposite is obtained by by a melt blending method by using graphene-silica hybrid material as a filler and polypropylene resin as a matrix. The polymer matrix and filler of the invention have rich sources and low cost; the mutual barrier effect of graphene-silica to inhibit the aggregation of each other is given full play to, and obvious synergistic strengthening and toughening effect is applied on the TPU substrate. The preparation method is simple, easy to operate, and can be widely used; and the obtained nanocomposite has excellent mechanical properties and thermal properties.

The invention provides a construction cement production material crushing, stirring and drying device, and belongs to the technical field of construction machinery. The device comprises a box, an upper cover, a storage box, a base, a vibration reducing device, universal wheels, an absorbing device and a dehumidifier; the upper cover is arranged above the box; the upper cover and the box are detachably connected through a hexagonal nut and a stud; a cam is arranged on the upper side in the box; a rotating shaft is fixedly connected to the middle of the cam; and a push plate is arranged below the cam. A reciprocating motion of a crushing column is realized by using cooperation of the cam, the push plate, a return spring and a push rod, so that the crushing efficiency and the crushing qualityare improved; an insertion plate achieves a temporary barrier effect on materials in a crushing chamber; after the materials are thoroughly crushed, the insertion plate is pulled out; the materials in the crushing chamber fall down from through holes in the separation plate to enter a mixing chamber; and the dehumidifier is arranged on the left side of the mixing chamber for drying the materialsto effectively inhibit damage of the materials due to moisture.

There are provided a thermal barrier coating material and a thermal barrier coating member that can suppress spalling when used at a high temperature and have a high thermal barrier effect, a method for producing the same, a turbine member coated with a thermal barrier coating, and a gas turbine. The thermal barrier coating member comprises a heat resistant substrate, a bond coat layer formed thereon, and a ceramic layer formed further thereon, wherein the ceramic layer comprises an oxide which consists of an oxide represented by the general formula A₂Zr₂O₇ doped with a predetermined amount of CaO or MgO and has 10 volume % or more of a pyrochlore type crystal structure, where A represents any of La, Nd, Sm, Gd, and Dy.

The invention discloses a double-component silicone structural sealant for heat mirror hollow glass and a preparation method of the sealant. The sealant comprises a component A and a component B, wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, alkyl-terminated polydimethylsiloxane, hollow microsphere, ceramic microbead, metal hydroxide, metal oxide, activated calcium carbonate, inorganic pigment and a surfactant; the component B comprises alkyl-terminated polydimethylsiloxane, a coupling agent, a cross-linking agent, a catalyst, an inhibitor, a thickening agent, and silicon dioxide. The preparation method of the sealant comprises the following steps: 1) taking each ingredient in the component A to be mixed uniformly under the vacuum condition; 2) taking each ingredient in the component B to be mixed uniformly under the vacuum condition; 3) mixing the component A and the component B at room temperature according to the weight ratio of (8:1) to (20:1), and at last obtaining the sealant. The double-component silicone structural sealant is good in adhesiveness, high in curing speed, good in sealing performance, high in hardness and modulus, and excellent in thermal barrier effect, and suitable for sealing and bonding of heat mirror film, glass and metal materials etc.

The invention relates to a composite solid electrolyte membrane and a preparation method and application thereof. The composite solid electrolyte membrane has a sandwich structure including a base membrane in an intermediate layer and solid polymer electrolytes coated on both sides of the base membrane. Ceramic ionic conductor powder is anchored in the pores of the base membrane by a binder. The invention utilizes the structural characteristic that the base film has certain pore distribution, the ceramic ionic conductor powder is embedded into the pores and anchored by the binder to form a stable integrated structure, which not only retains the original barrier effect, but also effectively improves the room temperature ionic conductivity and mechanical strength without destroying the flexibility of the diaphragm itself, and synthesizes the advantages of the diaphragm and the ceramic ionic conductor powder. The solid polymer electrolytes with ionic conductivity are coated on both sidesof the diaphragm to reduce the contact interface impedance between the diaphragm and positive and negative electrodes.

The invention provides a method for establishing a temperature field model of a steel box beam bridge road system under high-temperature asphalt concrete paving. The model comprises a paving layer (1), a steel bridge panel (2), U-shaped ribs (4) and diaphragm plates (5). An interface thermal resistor (3) is arranged between the paving layer (1) and the steel bridge panel (2) and is used for reflecting a barrier effect of an adhesive layer in an adhesive layer-paving composite structure on temperature transfer. The method comprises the following steps: acquiring the optimal interface thermal resistance by using a test-numerical simulation mixed parameter analysis method and combining a numerical optimization technology; establishing an actual bridge numerical model, setting a movable temperature load (6) to simulate the paving construction process, and calculating and analyzing the temperature field distribution condition of the steel box beam bridge road system. The method mainly depends on finite element modeling, a thermal insulation effect of the adhesive layer can be well reflected, and the paving construction process can be really simulated. Compared with field measurement, the method is simple and feasible, different working conditions can be simulated, and the temperature field distribution condition of the steel box beam bridge road system can be accurately reflected.

The present invention relates to a composition comprising probiotic bacteria for use in the pharmacological treatment of gastric hyperacidity. Said composition is capable of restoring the barrier effect of the stomach which is lost during pharmacological treatment of gastric hyperacidity and of minimizing the secondary effects due to said pharmacological treatment.

This invention relates to a copper covered aluminum-magnesium alloy thread, in addition to a preparing method. The aluminum-magnesium alloy is covered with copper, wherein the aluminum-magnesium alloy content reach to 99.6%, and the aluminum content is 0.7-4.5%. The preparing method comprises the following steps: a, rounding; b, cleaning; c, deburring; d, coating and welding; e, drafting bonding; f, drafting reducing; g, article associating. The thread has a similar conductivity property and mechanics property to copper wire, while the signal transmission property and barrier effect are superior to copper wire and aluminum-magnesium alloy thread. In the same diameter, the length of one ton copper covered aluminum-magnesium alloy thread is 2.5-2.7 times than one ton copper wire.

The invention discloses a biodegradable high-barrier vacuum evaporation film base material and a preparation method thereof. A film is sequentially composed of a high-barrier coating layer and a biaxially-oriented polylactic acid (BOPLA) film base material layer from top to bottom, wherein the base material layer consists of an upper surface layer, a core layer and a lower surface layer. The preparation method comprises the following two steps: firstly, preparing a polylactic acid film (BOPLA) base material meeting the coating requirement by using a horizontal drawing method, and then formingthe high-barrier coating layer on the surface of the film base material by using an online coating process or an offline coating process. According to an aluminum-plated film and an aluminum oxide-plated film which are produced by utilizing the high-barrier vacuum evaporation film base material prepared by the invention, the optimal oxygen permeability can be less than 0.02 cc/m<2>.24h, and the optimal water vapor permeability reaches 0.05 g/m<2>.24h; and the high-barrier vacuum evaporation film base material not only has an excellent barrier effect, but also is biodegradable, can effectivelysolve the environmental problem caused by waste packaging films, and is high in industrial utilization value.

The invention provides an OLED display device and a manufacturing method therefor. The OLED display device adopts an inverted type device structure and comprises a substrate, a cathode, an electron injection/transporting layer, a hole transporting layer, a hole injection layer and an anode, wherein the anode is a high conductivity PEDOT:PSS transparent conducting film which can be used to form a transparent OLED display device, the hole injection layer is a hydrophobic organic material, the hole transporting layer is an inorganic material which is high in water and oxygen barrier property, and therefore the hydrophobic hole injection layer can effectively prevent water molecules from permeating an organic illuminant layer when the PEDOT:PSS transparent conducting film is made into the anode; the hole transporting layer which is high in water and oxygen barrier property can exert secondary barrier effects on oxygen molecules and water molecules, and an aim of providing dual protection for the organic illuminant layer can be attained; the OLED display device and the manufacturing method therefor have a great batch production advantage due to simple manufacturing technologies and low production cost.

The invention discloses a multi-functional multi-layer composite film for preserving fruits and a preparation method thereof, which are used for preserving fruits such as grapes, winter jujube, lychee, longan and the like. The composite film comprises four functional layers, namely a basal layer, a release agent layer, an auxiliary layer and a protective layer, wherein the basal layer is a plastic film prepared by blowing inorganic filler modified resin; the sulfur dioxide release agent layer coated on the basal layer is made of an adhesive of a suspended sulfur dioxide release agent; the auxiliary layer on the release agent layer consists of organic acid and an adhesive; and the adhesive protective layer on the auxiliary layer is a mixture of ethylene vinyl-acetate copolymer (VAE) or/andnatural rubber. The fruit preserving package has adjustable oxygen penetration rate; sulfur dioxide bactericide gas generated by the composite film has good effect of killing botrvtis cinerea and other pathogenic bacteria, and the bactericide has the characteristics of adjustable concentration and period and low release concentration, and cannot remain on the fruits; and the composite film has good barrier effect on water vapor and prevents the fruits from being damaged due to water loss.

The invention provides a quantum dot film product which comprises a first barrier film, a second barrier film, a microstructure layer and a quantum dot layer, wherein the microstructure layer is of a prism structure formed by arranging a plurality of triangular prisms in parallel on the same plane; the height of the prism is between 5[mu]m and 150[mu]m; the vertex included angle is between 60 and 120 degrees. The microstructure layer produced on the barrier film is combined with the quantum dot layer, so that the thickness of the quantum dot layer can be effectively controlled, the microstructure layer can achieve a barrier effect, water vapor is prevented from permeating in from the periphery, and the durability is improved. Moreover, because the contact area of the quantum dot layer and the microstructure layer is enlarged, the adhesive power with the barrier film can be improved.

The invention belongs to the technical field of new materials and particularly relates to a recyclable, efficient, efficient, low-resistance, antibacterial and haze-preventing air filtration material. The air filtration material includes a base material layer and a filter layer, wherein the filter layer is an antibacterial agent supported nanofiber layer and is prepared by adopting an in-situ growth method, and the base material layer is made of a non-woven fabric. The air filtration material produces the step-by-step interception-barrier effect on PM2.5 and can efficiently intercept PM2.5 tiny aerosol particles, the 2.5-micron particle filtering efficiency can be up to 100%, the efficiency of filtering 0.5-micron particles and 0.3-micron particles can be up to 99%, the air resistance is 37 Pa, and the gram weight is 22.89 g/m<2>. The air filtration material is simple, convenient and easy to operate, smoke particles absorbed onto the material can be removed through washing after the material fully absorbs smoke, and multi-time repeated utilization is achieved.

The invention provides a high-barrier composite film which comprises three composite structure layers, including an outer layer, a barrier layer and an inner layer. The coating is prepared from 75-80% of PA (polyamide) and 20-25% of nano silica sol. The barrier layer is prepared from 30-60% of PET (polyethylene terephthalate), 8-18% of PEN (polyethylene naphthalate) and 30-60% of nano modified montmorillonite. The inner layer is prepared from 30-60% of PE (polyethylene), 30-55% of PP (polypropylene), 2-4% of nucleator and 5-15% of compatilizer. The barrier layer is subjected to blending/intercalation dual modification, thereby greatly enhancing the gas/moisture barrier effects of the film, and obviously prolonging the expiration date of the packaged goods. The silica sol on the outer layer enhances the waterproofing and antifouling effects on the premise of enhancing the PA properties, thereby further ensuring the excellent barrier effects.