65results about How to "Improve creep" patented technology

The invention discloses a preparation and coating method of an anti-corrosive anti-scale coating material. The method comprises the steps that polytef emulsion is mixed with same amount of absolute ethyl alcohol, and stirred liquid is added into mixed sol obtained by mixing prepared graphene dispersion liquid and titanium dioxide colloid; the coating material is obtained after high-speed stirring is conducted. A metal substrate is coated with the coating material, and a composite nano coating modified metal sheet is obtained after high-temperature sintering, cooling, temperature conservation and drying are sequentially conducted. The preparation and coating method of the anti-corrosive anti-scale coating material has the advantages that the coating material is used for corrosion and scaling prevention of the surface of metal heat exchange equipment, and the defects that a pure polytef coating is prone to creep deformation, poor in heat conductivity and poor in abrasive resistance are significantly improved. By means of introduction of graphene and titanium dioxide composite nano materials, the surface energy of polytef is decreased, the cold flow property and the heat transfer property of the polytef are significantly improved, the anti-fouling performance of the coating is improved, the abrasion resistance of the polytef is significantly improved, the mechanical properties of a composite coating are enhanced, the service life of the coating is prolonged, and the coating material is widely applied to various water-medium heat-exchange equipment.

The invention relates to a discharge spout for flexible bags, of the type comprising a rigid plastic body forming a discharge passage and having a tube (3) intended to be inserted between two walls of a flexible bag and joined to such walls by means of sealing. The tube (3) has a smooth outer surface and two opposite flat flaps (4) extending externally in a mid-plane of said tube (3). The outer surface of the tube (3) forms, together with the surface (6) of the flat flaps (4), a sealing surface. The outer surface of the tube (3) is a dished surface in the axial direction of the tube, and it has a middle area (5a) in which the distance to the axis (7) of the tube is maximum, separating two side sections (5b, 5c) in which the distance to the axis (7) is decreasing toward the ends of the tube.

The present invention relates to a guide-through assembly (4) for a filling level sensor working according to the principle of delay measurement of guided electromagnetic waves or for a capacitive filling level sensor, which for sealing the interior of the vessel against the interior of the sensor has no elastomeric sealing materials and in particular no elastomeric o-rings seals. This can be ensured by precisely machining the components which are essentially concentrically arranged in the guide-through assembly (4) on their circumferential surfaces (10, 11), so that in an assembled state the components arranged in the guide-through assembly (4), such as the interior conductor (7) and the dielectric materials (9, 12, 14) surrounding the interior conductor (7), contact each other at their mutually adjacent circumferential surfaces (11) in a sealing and positive engagement, so that additional sealing elements are not needed.

A moisture-curable, graft-modified resin composition includes at least one thermoplastic polymer (i) and at least one silyl group containing polymer (ii) possessing at least one hydrolyzable silyl group that is bonded to the polymer through a linking group containing at least one heteroatom selected from the group consisting of oxygen and nitrogen, each of polymers (i) and (ii) having grafted thereto at least one same or different silane (iii) which, prior to being grafted, possesses at least one reactive carbon-carbon unsaturated bond.

A fluid container is disclosed with a cap body made of rigid or semi rigid material and a valve body disposed within the cap body and movable between and open and closed position. The valve body is made of a semi flexible semi rigid material that has a coefficient of thermal linear expansion that is smaller than that of the cap body. The cap body and nozzle valve are configured with three different hermetic seals to counteract the effects of exposure to heat and cold over time and thereby extend the useful life of the cap and valve.

In a color image forming apparatus, a looped belt member is stretched and circulated by at least a drive roller and a driven roller so as to have a tensed side and a slack side. Each of plural image supporting members supports a single color toner image thereon, and abuts onto the slack side of the belt member to define a transferring position at which the toner image is transferred onto either the belt member or a recording medium held by the belt member, while being rotated. A circumferential velocity of each image supporting member is determined so as to be higher than a circulation velocity of the belt member.

The invention discloses a manufacturing method of a refractory brick. According to the manufacturing method, low-and-medium-grade andalusite (the contents of Al2O3 are 53%, 55% and 57%) are used as main raw materials, large and intermediate andalusite particles are replaced with large mullite particles and intermediate cordierite particles, and corundum, alpha-Al2O3 micropowder and SiO2 micropowder and combining clay and waste paper pulp are added. The preparation method comprises the following steps of: mixing the ingredients in a wet pan mill evenly and then discharging out of the mill; forming by a frictional brick press; drying the formed green blanks in a dryer; calcining the dried blanks in a calcining kiln, wherein the highest calcining temperature ranges from 1370DEG C to 1400DEG C. The refractory brick obtained by adopting the method can effectively solve the problems of the conventional refractory brick, such as high manufacturing cost, low load softness, large creepage, poor anti-seismic property and short service life; the appearance defects of the refractory brick are fewer, and the refractory brick can be widely applied in a ceramic burner of an ironmaking blast-furnace hot blast stove.

The invention discloses a high-precision ceramic pressure sensor which comprises a ceramic baseplate containing a concave hole and a plurality of electric-conductive through holes as well as a ceramic thin plate combined on the side of the ceramic baseplate where the concave hole is located, a measuring electrode and a first annular electrode winding the measuring electrode are disposed on a concave face of the concave hole, a moving electrode and a second annular electrode winding the moving electrode are disposed on the face of the ceramic thin plate which is opposite to the concave face, leading-out ends of the measuring electrode, the first annular electrode, the moving electrode and the second annular electrode are respectively led out from the other side opposite of the ceramic baseplate which is opposite to the concave hole via the corresponding electric-conductive through holes, the moving electrode and the measuring electrode constitute a measuring capacitor, the moving electrode and the first annular electrode constitute a reference capacitor, and the first annular electrode and the second annular electrode also constitute an isoelectric face through short circuits of the electric-conductive through holes. The high-precision ceramic pressure sensor disclosed by the invention can control an electrode spacing within a very high precision scope without introducing any second material, and has high sensitivity and good sealing effects.

The invention relates to a preparation method of a graphene oxide composite natural latex sponge, and belongs to the technical field of composite sponges. According to the method provided by the invention, a modified natural latex sponge is added by adding graphene oxide, groups such as hydroxyl, carboxyl and epoxy groups among the graphene oxide can be linked by covalent bonds in the reaction process, so that resilience performance of the sponge is effectively improved; the high specific surface area of the graphene oxide can effectively improve adsorption capacity of the composite sponge; the graphene oxide composite natural latex sponge is prepared by adding casein, the casein has very good thermal stability and can be used for sterilization at a high temperature without destroying thestability and functionality, the casein can form a tough hydrophilic protein film on the surface of rubber particles of natural latex, and the film does not degenerate or shrink to destroy an emulsionsystem, so that the mechanical properties and resilience performance of the graphene oxide composite natural latex sponge can be effectively and steadily improved.

The invention relates to a fiber composite core rod with improved performances for an overhead wire, comprising continuous basalt fiber twistless roving and an epoxy resin part, wherein the epoxy resin part is formed at the periphery of the continuous basalt fiber twistless roving by uniform dipping;The composite core rod is prepared by the following steps of: (1) using a coupling agent to carry out surface treatment on nano SiO2; (2) preparing infiltrate of the nano SiO2, and using the infiltrate of the nano SiO2 to carry out surface roughening and lipophilicity modification and treatment onthe continuous basalt fiber twistless roving; (3) using the coupling agent to carry out surface treatment on calcium carbonate whiskers and square zinc oxide whiskers; (4) preparing epoxy resin dipping solution and conveying the continuous basalt fiber twistless roving into the epoxy resin dipping solution for full dipping; and (5) treating the continuous basalt fiber twistless roving by adoptinga pulling-extruding process. The fiber composite core rod has the advantages of low manufacturing cost, higher cost performance, and excellent mechanization, heating and heat ageing resistance and creepage performances.

An adhesive film of the present invention comprises a (meth)acrylate-based copolymer and a cross-linking agent, and a gel fraction thereof is approximately 50-95%, and a ratio of change G′ in storage modulus thereof, represented by the following formula 1, is 20% or less.

G′=(G7−G1)/G1×100  [Formula 1]

(In formula 1, G1 is a storage modulus at 25° C. when the adhesive film is matured at 23° C. and a relative humidity (RH) of 55% for one day, and G7 represents a storage modulus at 25° C. when the adhesive film is matured at 23° C. and an RH of 55% for seven days.)

The invention provides an integrated packaging structure of a surface acoustic wave sensor. An insulating protective layer covers a busbar and a wire on the upper surface of a sensor substrate; a bonding pad plating layer covers the upper surface of an external bonding pad port of the sensor; the metal support frame has a certain height and grows on the sensor substrate and the insulating protective layer; a metal cover plate grows on the metal support frame to form a metal protective layer; and a gold crystal bonding layer grows on the back surface of the sensor substrate to form an elastic metal layer. Meanwhile, the invention provides a packaging method of the packaging structure. According to the invention, the sensitive substrate and the package of the sensor are integrally manufactured and glue does not need to be spin-coated on the structure for bonding, so that the reliability of the surface acoustic wave sensor packaging structure is improved, the defects of large clutter andlarge characteristic change after packaging in traditional packaging are overcome; meanwhile, the integrated packaging structure can be applied to detection of various information such as temperature,pressure and stress/strain.

The invention discloses a skull traction device used for cervical vertebra dislocation. The skull traction device comprises a cabinet body, wherein one side of the top end of the cabinet body is rotatably provided with connecting components; the connecting components are used for detachably connecting the cabinet body to a hospital bed; the top end of the cabinet body is vertically provided with atelescopic element; the top end of the telescopic element is provided with a guide component used for guiding a traction rope; a traction element is arranged in the cabinet body; the top end of the cabinet body is provided with a through hole; and in addition, the bottom end of the traction rope penetrates through the through hole and is wound to the output end of the traction element. The skulltraction device disclosed by the invention can be flexibly suitable for the height of the hospital bed and is convenient to transport a patient along with the hospital bed, linear transition is increased for traction force, weight can be continuously increased so as to be favorable for muscle relaxation and cervical vertebra creepage and also favorable for restoration, and manpower loss is reduced.

The invention discloses a formula and preparation of a train wheel tread friction control agent based on an inorganic adhesive. The friction control agent is prepared from the following ingredients byweight percentage: 34%-45% of a composite adhesive, 25%-35% of a lubricating agent, 3.2%-11% of a friction adding agent and 20% of other fillers. According to the train wheel tread friction control agent based on the inorganic adhesive and a preparation method thereof, the friction control agent has the characteristics of being good in high temperature resistance, high in hardness, high in mechanical strength and good in abrasion resistance and has the advantages of effectively controlling a friction coefficient, being good in film-forming property, lowering traveling noise, effectively reducing friction of steel rails and wheels and ensuring traffic safety; in addition, the related preparation method is simple and is used conveniently, therefore, the preparation method is suitable for promotion and application.

The invention discloses a coherent nanophase reinforced medium-entropy alloy with excellent thermal stability and a preparation method, the coherent nanophase reinforced medium-entropy alloy comprises 30 at.%-33 at.% of Ni, 30 at.%-33 at.% of Co, 30 at.%-33 at.% of Cr, 5 at.%-7 at.% of Al and 1.0 at.%-3.0 at.% of Ta, gamma'phase is added into the NiCoCr medium-entropy alloy with excellent mechanical properties to form elements Al and Ta, and then a nanophase is introduced into a NiCoCr alloy matrix through an aging process, so that the thermal stability of the alloy is improved. A gamma + gamma'structure similar to a high-temperature alloy is constructed, and meanwhile, the strength of the NiCoCr alloy is also greatly improved through the nano precipitation strengthening effect; the alloy not only has the characteristic of high toughness, but also has excellent structure thermal stability, so that the alloy has great competitive advantages in alloys with similar structures, has great engineering application prospects in the high-temperature field, and is expected to become a next-generation high-temperature structural material.

The invention relates to the technical field of building materials, and especially relates to a phosphorus and magnesium anchoring glue and a preparation method thereof. The glue comprises, by weight,80-120 parts of dead-burned magnesia, 80-120 parts of ammonium dihydrogen phosphate and 10-20 parts of water. The preparation method includes the following steps: S1, taking 80-120 parts of the dead-burned magnesia and 40-60 parts of ammonium dihydrogen phosphate, and performing dry mixing until uniformity in order to obtain a dry material mixture; S2, adding 10-20 parts of the water to the dry material mixture, and performing stirring and mixing until uniformity in order to obtain a wet material mixture; and S3, adding 40-60 parts of the ammonium dihydrogen phosphate to the wet material mixture, and performing stirring and mixing until uniformity in order to obtain the phosphorus and magnesium anchoring glue. The phosphorus and magnesium anchoring glue has can firmly bond to steel and other metals, has an excellent reinforcement performance, no special requirements for anchoring or fixing parts, very low creep and shrinkage and good resistance to acid and groundwater corrosion, is suitable for rapidly anchoring post-anchor bolts (reinforcements) and anchor poles of concrete structures, and has excellent application prospects in the fields of rapid repairing, first-aid repairing and reinforcement.