71 results about "Stratum intermedium" patented technology

An insulated-room sheet of cement-base fibre polymer is composed of two surfaces and the sandwich layer. The surface is made from the cement, flyash, ceramisite, latex, organic fibre, the water reducing agent, the waterproofing agent, the blister, the excitant and the concrete. The sandwich layer is made from the cement, flyash, EPS, pearlite, ceramisite, latex, interface agent, water reducing agent, the waterproofing agent, the blister, the excitant and the concrete. The sheet has the good insulation, low weight, good fire and water resisting.

The invention provides an integrated bone-cartilage repair scaffold. The integrated bone-cartilage repair scaffold is of an integrated structure composed of a subchondral bone repair layer, a middlelayer and a cartilage repair layer, wherein the subchondral bone repair layer is fashioned porous calcium phosphate biological ceramic, the middle layer is sulfydryl-hyaluronic acid hydrogel, the cartilage repair layer is composed of I-type collagen hydrogel and chondrocytes or mesenchymal stem cells, and the middle layer is located between the subchondral bone repair layer and the cartilage repair layer and in a porous structure of the fashioned porous calcium phosphate biological ceramic to separate the subchondral bone repair layer from the cartilage repair layer. The invention further provides a preparation method of the integrated bone-cartilage repair scaffold. The repair scaffold can prevent blood vessels from invading a cartilage layer, so that the tightness and the stability of connection between a bone layer and the cartilage layer are improved, biological bonding of the bone layer and the cartilage layer is achieved, and thus a good repair effect is achieved.

The invention relates to a biological material for repairing meniscus tear and a preparation method for the biological material. The material consists of an acellular matrix membrane on the inner layer, a porous structure collagen matrix membrane on the middle layer, a cell layer formed by cartilage cells on the outer layer and a cell sheet. The repair material has certain elasticity and toughness and is high in biological activity; the cartilage cells can secrete cell factors per se, and nutritional ingredients can be directly obtained through articular cavity synovia, and thus, the establishment of communication link between tissue cells at both ends of the tear during the meniscus tear process is accelerated; the immigration and the infusion of the cells in the material and autologous tissue cells are promoted; the tissue regeneration and functional reconstruction time is shortened; and the ideal novel material and the preparation method for the material are provided for clinically repairing the damage of the meniscus tear (including blood supply zones), especially the tissue regeneration and the functional reconstruction of no-blood zones and low-blood zones.

The invention discloses a multilayer composite ultrafiltration membrane and a preparation method thereof. The multilayer composite ultrafiltration membrane is characterized by being provided with five layers of structures, wherein each of the inner and outer surfaces of the ultrafiltration membrane is a PET or PP non-woven fabric base body, each of the inner and outer subsurfaces of the ultrafiltration membrane is a polymer nanofiber membrane layer, and the middle layer of the ultrafiltration membrane is a cellulose nanofiber membrane layer. A polymer in the polymer nanofiber membrane layer is selected from one of polyether sulfone, polysulfone, polyacrylonitrile and polyvinylidene fluoride film forming polymers, and then is processed to prepare a spinning solution, and electrostatic spinning dope forms the polymer nanofiber membrane layers on PET or PP non-woven fabrics serving as the base bodies for electrostatic spinning collection. The cellulose nanofiber membrane layers are prepared by selecting one of bamboo, wood, cotton and linen, dissociating fiber slurry and processing. The multilayer composite ultrafiltration membrane prepared by the method has good hydrophily, higher pollutant resistance and water flux, and better interception characteristic, and is more economical in use and longer in service life.

The invention relates to a trapezoidal moisture-transfer knitted fabric, which comprises a multilayer body compounded from an outer layer, an inner layer and a middle layer, wherein the fabric is an air layer knitted fabric; the water repellency area in the inner layer accounts for 50-60 percent relative to the total area of the inner layer; the hydrophile area in the outer layer accounts for 90-100 percent relative to the total area of the outer layer; and the outer layer is connected with the inner layer through the middle layer. The trapezoidal moisture-transfer knitted fabric has the advantages of reasonable structure, hydrophilicity in the outer layer and water repellency in the inner layer, sweat can be quickly exhausted from the inner layer to the outer layer under the moisture transfer and transition actions of the middle layer, a small amount of moisture is kept in the inner layer, a moisture diffusion area is small, and thus, the skin is kept dry and comfortable.

Disclosed is an absorbent structure having wet integrity greater than about 4.0 mN / gsm, softness greater than 8.0 / J, pliability greater than about 70 / N, and providing a substantially dry liquid-accepting surface after receiving a quantity of liquid. The structure includes an upper ply having an upper fluid receiving surface and a lower surface and including (i) a top stratum including synthetic matrix fibers bonded with a binder, the matrix fibers having length from about 2 to about 15 mm; (ii) a middle stratum in fluid communication with the top stratum, the middle stratum including natural fibers, superabsorbent particles and a binder; and (iii) a bottom stratum in fluid communication with the middle stratum, the bottom stratum including natural fibers and a binder. The structure also includes a lower ply in fluid communication with the upper ply, the lower ply having an upper surface and a lower surface and including at least one stratum including natural fibers, superabsorbent polymer particles, and a binder, wherein the lower surface of the upper ply has a surface area less than about 80% of the upper surface area of the lower ply.

The present invention relates to a panel as well as a method for producing a panel, in particular a wall- ceiling- or floor panel. The method according to the invention provides that a layer of liquid radiation curing acrylate with a low Martens hardness is applied on a support layer in a first step. This is followed by an application of an intermediate layer in a second step and thereafter the application of a further layer wet-on-wet, which as a Martens hardness after curing which is larger than the Martens hardness of the first applied layer. The resulting panel has an intermediate layer with an inhomogeneous hardness profile due to the wet-on-wet application which leads to particularly advantageous properties.

The invention relates to an antibacterial oxygen obstructing composite pipe which is prepared by extruding an oxygen obstructing layer at the outer layer and a base material layer at the inner layer of a pipe into a whole together by adhesive at the middle layer; and adding a nano-grade quartz material and a silver ion into the base material layer to be melted into a whole. The antibacterial oxygen obstructing composite pipe is formed by compounding multilayer coextrusion and hot melting, has favorable oxygen obstructing effect and can ensure that the inner wall of the pipe is not scaled and does not breed bacteria, lead the water quality to be more sanitary and safer, lead the heat conduction efficiency of the pipe to be higher and is more suitable for geothermal heating.

The invention relates to a continuous fiber reinforced thermoplastic composite high-pressure pipeline which is provided with an inner wall and an outer wall, wherein an intermediate layer is arranged between the inner wall and the outer wall, the inner wall and the outer wall are respectively made of thermoplastic resin materials, the intermediate layer is a continuous fiber resin reinforced layer formed by compounding a plurality of layers of fiber resin layers thermoplastically, each fiber resin layer is made of a band material formed by pre-impregnating and melting continuous fibers or continuous fiber bundles and the thermoplastic resin material, and fibers in the fiber resin layers are glass fibers, aramid fibers or carbon fibers. In addition, the intermediate layer can be internally provided with a self-heating type heating coil. The continuous fiber reinforced thermoplastic composite high-pressure pipeline can be coiled to be transported and laid without being limited by regions, thus the laying efficiency of the pipeline is greatly increased and the laying cost is reduced.

The invention discloses a method for manufacturing a three-dimensional small-diameter vessel model. The method comprises the following steps of a, preparation of a supporting bracket: utilizing a silica gel material to perform 3D printing of a supporting bracket with an inner and outer concentric circle shape structure; b, formation of a medial membrane: pouring an accellular extracellular matrixcontaining a human aortic smooth muscle cell into a middle layer of the supporting bracket to form the medial membrane; c, formation of an intima: pouring a human umbilical vein endothelial cell suspension into an inner layer of the supporting bracket to form the intima; and d, formation of an adventitia: wholly putting the supporting bracket in a dynamic culture system fully filled with human newbaby dermal fibroblast suspension to form the adventitia. The vessel model acquired with the method is good in biocompatibility, has relatively strong mechanical property and can be used for pathological model study and drug screening relevant to vessels.

The invention provides a coextrusion waterproof moisture-permeable film structure, which comprises a top surface layer, a middle layer, and a bottom surface layer, wherein the top surface layer and the bottom surface layer comprise polyolefin or polyurethane; and the middle layer comprises the polyurethane. The middle layer is sandwiched between the top surface layer and the bottom surface layer. If the top surface layer and / or the bottom surface layer adopt the polyurethane, the moisture permeability and the air permeability of the polyurethane of the top surface layer and the bottom surface layer are less than that of the polyurethane of the middle layer. The film can be produced through a coextrusion film blowing method or a coextrusion film casting method. Besides, the coextrusion waterproof moisture-permeable film can be adhered to a fabric through an adhesive so as to form a waterproof moisture-permeable textile.

Microplates and methods for manufacturing microplates. The microplate is designed to allow UV radiation to pass through the bottom wells of the microplate so that the microplate can be used for assaying samples by use of UV absorbance. In one embodiment, the microplate comprises at least first and second wells, each well having a UV permeable bottom. In another embodiment, the microplate comprises a frame having an upper portion and a lower portion contiguous with the upper portion and a sheet disposed between the upper portion and the lower portion and defining the bottom of at least one well of the microplate. One embodiment of the method includes steps of inserting a sheet of UV permeable material into a mold cavity that includes sections shaped to form the sidewalls of the plurality of wells, injecting molten plastic material into the mold cavity, and cooling the plastic material to form the microplate with the plastic material forming the sidewalls of each of the first and second wells and the sheet of UV permeable material forming the bottom of each of the first and second wells. Another embodiment of the method includes providing an upper plate defining sidewalls of at least one well, adhering an intermediate layer to the upper plate and adhering a sheet of UV permeable material to the intermediate layer. A further embodiment of the method includes inserting a sheet of material having at least one hole into a mold cavity, injecting a molten plastic material into the mold cavity and cooling the plastic material to form a microplate.

The invention relates to a multifunctional compound nonwoven fabric comprising a surface layer, a middle layer, a lining and an activated carbon layer, wherein the activated carbon layer is arranged between the surface layer and the middle layer and is composed of activated carbon particles, and the activated carbon layer is arranged between the surface layer and the middle layer by thermal caking via hot melt glue powder. The invention effectively combines three layers of nonwoven fabrics and one layer of activated carbon layer, can fully adsorb liquids, such as moisture, blood, alcohol and the like, has the functions of resisting bacteria and resisting viruses, effectively removes peculiar smell and can avoid cross infection between patients and medical care personnel.

The invention relates to a preparation method of a coal-series reservoir group fracturing object model sample taking a transition zone into account. The preparation method includes the steps: uniformly mixing cement and quartz sand according to a certain proportion, adding water, stirring the cement, the quartz sand and the water to form cement slurry, and pouring the cement slurry to the bottom of a sample mould to form a rock layer of a coal-series reservoir group; uniformly mixing the cement, the quartz sand and pulverized coal according to a certain proportion, adding water, stirring the cement, the quartz sand, the pulverized coal and the water to form coal-bearing slurry, preparing at least ten parts of coal-bearing slurry containing different proportions of pulverized coal, pouringthe coal-bearing slurry to an intermediate layer of the sample mould layer by layer according to the sequence from small proportions of the pulverized coal to large proportions of the pulverized coalto form the transition zone of the coal-series reservoir group; uniformly mixing the cement, the quartz sand and the pulverized coal according to a certain proportion, adding water, stirring the cement, the quartz sand, the pulverized coal and the water to form coal-bearing slurry, pouring the coal-bearing slurry to the top of the sample mould and inserting a plurality of mutually perpendicular paraffin slices to form a coal and rock layer of the coal-series reservoir group. The mechanical property of the object model sample prepared by the method is infinitely close to that of the real coal-series reservoir group.

A cushioning device has a first material and an opposing second material that are sealed together at the peripheral edges to form a first (right) side, a first (head) end, a second (left) side, and a second (foot) end. Positioned between the first material and the second material is a middle material. The middle material has a top side, a bottom side, a first gap between the first side and the middle material and a second gap between the second side and the middle material. In addition, the first material is sealed to the middle material's top side at a first set of locations to form a first set of interior welds. The second surface is sealed to the middle material's bottom surface at a second set of locations to form a second set of interior welds. The first set of interior welds on the middle material's top surface and the second set of interior welds on the middle material's bottom surface are not superimposed on each other or overlap each other.

In a insert-type continuous casting nozzle comprising a highly functional layer formed to have a high corrosion resistance, a high anti-attachment capability, etc., and provided to define an inner bore thereof, the present invention is directed to providing a refractory material (mortar) for an intermediate layer of the continuous casting nozzle, which has a property capable of fixing an inner bore-side layer to an outer periphery-side layer (a nozzle body) of the continuous casting nozzle, while preventing the occurrence of expansion splitting in the outer periphery-side layer due to a difference in thermal expansion between the inner bore-side and outer periphery-side layers, and a continuous casting nozzle using the refractory material for the intermediate layer. The refractory material for the intermediate layer contains a hollow refractory aggregate in an amount of 10 to 75 volume %, wherein a ratio of an average radius R of each particle of the aggregate to an average wall thickness t of the particle satisfies the following relation: R / t≧10. This refractory material is disposed between an inner bore-side layer (2) and an outer periphery-side layer (3, 4) of a continuous casting nozzle.

The present invention provides a coated cutting tool comprising a substrate with a rake side, a clearance side and a cutting edge, and a coating comprising a first layer and a second layer where the second layer comprises a sandwich structure consisting of an inner layer, an intermediate layer and an outer layer, wherein the inner layer is exposed through an opening in the outer layer and said opening extends over at least a portion of the width of the cutting edge. Thereby a double layer is provided in critical areas whereas a single layer is provided in other areas. Preferably the double oxide layer is an aluminum oxide layer. A method for manufacturing the coated cutting tool is also provided.

The invention discloses a damping device capable of offsetting floor slab disturbance caused by pump tube impacting. The existing problem that a floor slab is impacted resulting in the existent of easy fatigue and damage of floor slab concrete when concrete pouring is conducted on walls, beams, slabs and columns is solved. The damping device comprises a rectangular vertical steel plate framework penetrating through a floor slab hole, a horizontal steel plate framework is fixed on the outer side wall of the rectangular vertical steel plate framework, an expansion bolt connected with the floor slab penetrates through the horizontal steel plate framework, vertical connecting plates corresponding to the side walls of the rectangular vertical steel plate framework one by one are arranged on theinner sides of the rectangular vertical steel plate framework, the part between each vertical connecting plate and the corresponding inner wall of the rectangular vertical steel plate framework is provided with a damping spring which is connected with the vertical connecting plate and the corresponding inner wall of the rectangular vertical steel plate framework, and rollers are arranged on the inner sides of the vertical connecting plates. By means of the damping device, the disturbance in the horizontal and vertical directions of the floor slab caused by the impacting force of a pump tube when the pump tube penetrates through the floor slab is greatly relieved, the damping effect is greatly improved, the problems of fatigue and damage of a middle layer floor slab are prevented, and theconstruction quality of floor slab concrete is ensured.

The invention discloses an alveolar bone regeneration material and a manufacturing method thereof, comprising three layers composed of different materials, wherein the three layers are respectively anoutermost layer, an intermediate layer and an innermost layer. The outermost layer is ellipsoidal and covers the middle layer. The intermediate layer is gradient distributed inside the outermost layer according to the alveolar bone level, and each level of the intermediate layer can be closely combined. The innermost layer is surrounded by a dentin-like layer in the middle layer. The invention can ensure the gradient degradation as well as the sturdiness of the implant, is not easy to be washed out, and effectively reduces the potential inflammatory reaction.

The invention discloses an X-ray prevention shielding film and a preparation method thereof. The X-ray prevention shielding film comprises five layers of structures. The middle layer is a reinforced fabric layer, the outermost layer is a protective layer, a lead rubber layer is arranged between the reinforced fabric layer and the protective layer, and the reinforced fabric layer is made of chemical fiber cloth. The X-ray prevention shielding film is used for safety inspection, reinforced fabric can improve the mechanical strength, lead rubber can achieve the effect of shielding X-rays, abrasion resistance rubber prevents lead powder from being precipitated, the abrasion resistance degree is improved, and the service life is prolonged. According to the X-ray prevention shielding film and the preparation method thereof, traditional lead plastics are changed through lead rubber fusion, the shielding film is made softer, the durability is higher, and the phenomenon that the X rays are leaked and human bodies are injured because of low-temperature hardening of the shielding film due to temperatures is avoided.

The invention relates to a sound-absorbing board used in construction, in particular to a micro-perforated sound-absorbing aluminum hollow composite board. It includes a surface layer, a middle layer and a base layer. The surface layer and the base layer are aluminum plates, and there are many micro-perforations arranged in dislocation on the surface of the aluminum plate; the middle layer is a modified polyphenylene ether (MPPO) plastic plate, and there are multiple Hollow hole; the thickness of the surface layer and base aluminum plate is 0.5mm-1.0mm, the thickness of the intermediate layer modified polyphenylene ether plate is 6.0mm-10mm; the aperture of the micro-perforation is not more than 1.0mm, and the hole distance is 4mm- 6mm, and the perforation rate is 1-5%. The hollow hole 5 in the modified polyphenylene ether plastic plate of the middle layer is composed of a plurality of rectangular holes of the same size and shape arranged in parallel. The present invention has high sound absorption coefficient, high middle and low frequency sound absorption performance, and has the advantages of light weight, high strength, high temperature resistance, moisture resistance and corrosion resistance, as well as longer service life and better decoration .

A method for manufacturing a press felt with a seam, to a press felt, and a base fabric of a press felt. The base fabric is a one-base structure with machine direction yarns forming seam loops and further machine direction yarns running in the web-side surface layer. The machine direction yarns weave with cross-yarns. The yarn ratio of the surface layer machine direction yarns to the intermediate layer and further the bottom layer machine direction yarns is at least 2:1:1. In addition, the surface layer machine direction yarns have a long run and their cross-sectional area is smaller than the yarns forming the seam loops.

The invention relates to a composite expanded and vitrified microbead heat-insulation mortar slab with ceramsite-reinforced surfaces and a production method thereof. The composite expanded and vitrified microbead heat-insulation mortar slab consists of an upper surface layer, a lower surface layer and a sandwich layer, wherein the sandwich layer is expanded and vitrified microbead heat-insulation mortar; the upper surface layer and the lower surface layer are expanded and vitrified microbead heat-insulation mortar doped with ultralight ceramsite aggregate, wherein the ultralight ceramsite with the bulk density of being lower than 300Kg / m <3> is selected. The mass ratio of the ultralight ceramsite to the expanded and vitrified microbeads is 1: 1. The production method comprises the following steps of: respectively preparing dry blend of the upper surface layer, the lower surface layer and the sandwich layer according to the used proportions, then respectively and uniformly mixing, respectively adding water according to the ratio of 1: 1 of water to each mixture, respectively stirring for 3min, forming a slab in a mould, and adjusting the thickness of the slab according to actual requirements, wherein the thicknesses of the upper surface layer and the lower surface layer are respectively 5-10mm, and the thickness of the sandwich layer is 30-60mm. The heat-insulation mortar slab has the excellent properties of light weight, small heat insulation coefficient, fireproofness, high surface strength and the like.

The invention relates to a house pet mat and a manufacturing method thereof. The house pet mat comprises a mat body which includes a surface layer that is a nonwoven fabric layer, an intermediate layer composed of a macromolecule water accepting layer and a toilet paper layer and a bottom layer composed of a layer of waterproof membrane. And the house pet mat also comprises a paste layer and a protection layer of the paste layer; the paste layer composed of spraying glue is sprayed or the paste layer composed of double adhesion is stuck on the lower surface of the bottom layer of the mat body, the protection layer of the paste layer which is a layer of non-viscous gummed paper is stuck on the surface of the paste layer. First, the surface layer, the intermediate layer and the bottom layer are overlapped, then hot-pressed by an electric heating roller or pressed by a machine, after that, the spraying glue is sprayed or the double adhesion is stuck on the lower surface of the bottom layer, then the non-viscous gummed paper is stuck, finally division is carried out. The house pet mat of the invention better solves the problem that the existing house pet mat is prone to generate leakage.