39results about How to "Improved stress distribution" patented technology

With a simple configuration, plastic deformation of contacts can be prevented while avoiding increase in size, and occurrence of failure in electrical connection due to dust can be well prevented. In an elastic beam-like member of a first-side contact extending like a cantilever in an insulating housing, a bent extending part which substantially increases the span length of the elastic beam-like member is formed to be bent to have a curved shape at a root part serving as a part coupled to a fixing base part. A through hole is formed in a region including at least part of the bent extending part to ensure flexibility while enhancing elasticity of the contact, thereby preventing permanent deformation of the contact. Meanwhile, dust which has entered the equipment is caused to fall through the through hole, thereby ensuring electrical conductivity well.

The invention relates to high-temperature resistant sectional curing epoxy paint and a use method thereof. The high-temperature resistant sectional curing epoxy paint comprises a component A, a component B and a component C which are mixed in a certain ratio, wherein the component A is an epoxy resin component which comprises E-20 bisphenol A epoxy resin, E-51 bisphenol A epoxy resin, F-51 phenolic epoxy resin, carboxyl terminated nitrile rubber modified tetra-glycidyl amide type epoxy resin, aluminium oxide, micron-grade and nanometer-grade aluminum nitride balls, fumed silica, a wetting dispersant and a coupling agent; the component B is a first curing agent component which comprises a YH-82 epoxy curing agent, a C-1041 cardanol epoxy resin curing agent, DMP(Dimethylphthalate)-30, fumed silica and micron-grade aluminum nitride balls; the component C is a second curing agent component which comprises hexahydrophthalic anhydride, fumed silica and micron-grade aluminum nitride balls. The high-temperature resistant sectional curing epoxy paint prepared by the invention has the effects of low temperature pre-curing for avoiding uniform paint films, and high temperature curing, thereby keeping high strength and good adhesion of the paint films formed by low temperature curing.

The invention discloses a heatproof damping rubber material. Raw materials of the heatproof damping rubber material contain, by weight, 50-70 parts of silicone rubber, 20-30 parts of butyl rubber, 57-83 parts of a composite filler, 0.6-0.8 part of gamma-methacryloxypropyltrimethoxysilane, 15-25 parts of zinc borate, 10-15 parts of nano-sized magnesium hydroxide, 15-25 parts of epoxy acetyl methyl linoleate, 15-25 parts of epoxidized soybean oil, 1-1.5 parts of dicumyl peroxide, 0.2-0.4 part of triethylenediamine, 0.1-0.2 part of a promoter D, 0.1-0.3 part of a promoter BZ, 1-3 parts of a Ca / Zn compound stabilizer, 1-3 parts of methyl tin mercaptide, 0.1-0.3 part of an antioxidant 1076, 0.1-0.2 part of an antioxidant 168, 0.1-0.3 part of an anti-ageing agent and 1-3 parts of montanin wax. The heatproof damping rubber material of the invention has good heat resistance and good damping performance.

The invention discloses an osteochondral composite tissue integrated engineering support with bionic function interface, which is composed of cartilage layer, calcification layer and subchondral bone layer from top to bottom, between the cartilage layer and calcification layer, calcification layer and subchondral bone The organic connection between the layers; the cartilage layer is composed of type II collagen and chitosan, and type II collagen / chitosan is connected in the form of covalent bonds; the composition of the calcified layer is type II collagen and hydroxyapatite, II Type I collagen / hydroxyapatite are connected by covalent bonds; the subchondral bone layer is composed of type I collagen and hydroxyapatite, and type I collagen / hydroxyapatite are connected by covalent bonds; the cartilage layer and More than one pore is provided in the subchondral bone layer, and the pore diameter of the pore is 100 μm to 500 μm. The stent of the present invention has good biocompatibility, controllable degradability and sufficient mechanical strength, and has a bionic functional interface; after being transplanted into the patient's body, it can withstand the stress of the normal state and meet the mechanical requirements of the implanted site; The rate of degradation and absorption matches the growth rate of new tissue in the host.

The invention discloses a bolt, which comprises a body, a head and a threaded part. The body has a central axis. The head is arranged at one end of the body. The threaded portion spirally surrounds and connects to the body along the central axis. The threaded part has a bearing surface facing the head. The load-bearing surface is a surface with a continuous slope or an inflection point. The load-bearing surface includes a concave curved surface, a convex curved surface and a load-bearing tooth ventral surface. The concave curved surface touches the body, and the convex curved surface is farther away from the body than the concave curved surface. One side of the convex curved surface is connected to the concave curved surface and the other side of the convex curved surface is connected to the load-bearing tooth ventral surface .

The invention relates to high-temperature resistant sectional curing epoxy paint and a use method thereof. The high-temperature resistant sectional curing epoxy paint comprises a component A, a component B and a component C which are mixed in a certain ratio, wherein the component A is an epoxy resin component which comprises E-20 bisphenol A epoxy resin, E-51 bisphenol A epoxy resin, F-51 phenolic epoxy resin, carboxyl terminated nitrile rubber modified tetra-glycidyl amide type epoxy resin, aluminium oxide, micron-grade and nanometer-grade aluminum nitride balls, fumed silica, a wetting dispersant and a coupling agent; the component B is a first curing agent component which comprises a YH-82 epoxy curing agent, a C-1041 cardanol epoxy resin curing agent, DMP(Dimethylphthalate)-30, fumed silica and micron-grade aluminum nitride balls; the component C is a second curing agent component which comprises hexahydrophthalic anhydride, fumed silica and micron-grade aluminum nitride balls. The high-temperature resistant sectional curing epoxy paint prepared by the invention has the effects of low temperature pre-curing for avoiding uniform paint films, and high temperature curing, thereby keeping high strength and good adhesion of the paint films formed by low temperature curing.

A component A is mainly composed of sodium silicate water glass, lithium silicate water glass, glycerol and water; a component B is composed of polyphenyl polymethylene polyisocyanate, a polyurethane prepolymer and trioctyl citrate; and a component C is composed of a DMAEE catalyst, a BDMA catalyst, an N, N-dimethylcyclohexylamine catalyst, an EFKA-2550 defoaming agent, an UN-025 anti-hydrolysis agent, an XY-KM003 anti-mildew agent and an HY11190 ultraviolet light absorber. The high-strength silicate / polyurethane urea-based composite reinforcing material can be obtained by uniformly stirring and mixing the component A and the component C, defoaming, and mixing and reacting with the defoamed component B through a mixing head of a grouting machine. Or the high-strength silicate / polyurethane urea-based composite reinforcing material can be formed by mixing the materials through a mixing head of a grouting machine and directly grouting the materials into roadbed cracks, open joints or tunnel and coal seam cracks. The composite reinforcing material is high in comprehensive mechanical property and excellent in reinforcing effect on defects such as roadbed cracks and open joints or tunnel cracks, cracks and loose coal seams.

The invention relates to a tile and a production method thereof, in particular to a Milan tile and a production method thereof, belongs to the technical field of building metal tiles and aims to solve the problems of poor stability, low durability and short service life of composite structures on metal tile surfaces in the prior art. An Al-Zn alloy coated steel sheet is stamped into a base plate with a stamping mold; the base plate is placed in a mold, silicone rubber and color sand are mixed and injected into the mold, and a mixed layer is formed on the upper surface of the base plate; the base plate in the step 2 is demolded and cured; protection layers are sprayed on two sides of a cured tile. The process is simple, color sand particles and silicone rubber have good contact uniformity, color sand is uniformly distributed, and the tile has uniform thickness, high stress dispersing performance and good economic benefits.

The application relates to the field of shoes, and discloses a women's shoe with an anti-crack vamp and a preparation method thereof. A women's shoe with an anti-cracking vamp, including a vamp and a sole, a flax fiber layer is bonded to the lower surface of the vamp, and a coating agent is coated on the upper surface of the vamp, and the coating agent includes the following parts by weight Raw materials: 40-50 parts of polybutylene terephthalate; 5-8 parts of phenylenediamide phthalamide; 3-4 parts of dicyclopentadiene; 1-2 parts of cross-linking agent; the preparation method is: S1. Preparation of coating agent; S2. Surface coating of shoe upper; S3. Women's shoe molding; The advantages of this application are: phenylenediamide and dicyclopentadiene are cross-linked to form a cross-linked network, and then combined with thread Blending of polybutylene terephthalate, so that polybutylene terephthalate randomly penetrates into the cross-linked network, can form a dense and loose two-phase network structure, and destroy the uniformity of the cured network , which is conducive to stress dispersion, which can play a toughening role and improve the anti-cracking performance of the upper.

The invention discloses an oil cooler formed by staggered dotting oil cooler pipes. The oil cooler comprises a body, and the body comprises a core, an oil inlet chamber and an oil outlet chamber. The core comprises heat dissipation belts and the oil cooler pipes, the heat dissipation belts and the oil cooler pipes are arranged alternately, main pieces are welded to the two ends of the core, and oil passing holes are formed in the positions, corresponding to the oil cooler pipes, of the main pieces. The oil inlet chamber and the oil outlet chamber are welded to the main pieces of the core correspondingly, a groove is formed in a pipe body of each oil cooler pipe, and protection plates are welded to the two heat dissipation belts on the outer layer correspondingly. The oil cooler is small in weight, high in strength, capable of bearing large working pressure, high in assembling speed, convenient and fast to install, high in sealing performance and small in flow resistance and wind resistance. The oil cooler pipe is high in overall strength and good in stress dispersion, deformation, leakage and the like are not likely to occur in the using process, and the heat exchange efficiency, the sealing quality and the stability of the oil cooler are guaranteed. The oil cooler and the accessories used by the oil cooler have wide popularization and application value, and the market competitiveness of enterprises is improved.

The invention discloses a high temperature-resistant step-cured epoxy paint and an application method of the paint. The high temperature-resistant step-cured epoxy paint is obtained by mixing ingredient A, ingredient B and ingredient C in A certain proportion, wherein the ingredient A is an epoxy resin ingredient and comprises E-20 bisphenol A epoxy resin, E-51 bisphenol A epoxy resin, F-51 phenolic aldehyde epoxy resin, carboxylate-terminated nitrile butadiene rubber modified tetraglycidylamine type epoxy resin, aluminum oxide, aluminum nitride, fumed silica, a wetting dispersant, and a coupling agent; the ingredient B is a first curing agent ingredient and comprises an YH-82 epoxy curing agent, a C-1041 anacardol epoxy resin curing agent, DMP-30, fumed silica, and aluminum nitride; and the ingredient C is a second curing agent ingredient and comprises hexahydrophthalic anhydride, fumed silica, and aluminum nitride. The high temperature-resistant step-cured epoxy paint disclosed by the invention can be pre-cured at low temperature, does not form an unsmooth paint film, is cured at a high temperature, and remains the advantages of high strength and good adhesive force of the paint film which is cured at a high temperature.

Provided is a jacking pipe cushioning material that exhibits a superior stress-dispersion effect and is easy to position. The jacking pipe cushioning material (20) (cushioning material pieces (20a)) is a ring-shaped plate member comprising a first side surface (21) and a second side surface (22), which are disposed so as to be substantially parallel at a prescribed distance (s) from one another, as well as an outer peripheral surface (25) positioned at the outer peripheral edges of both side surfaces. If the diameter (radius of curvature) from the center (L) of the ring to the outer circumferential edge (23) of the first side surface (21) is represented by A, the diameter (radius of curvature) to the outer circumferential edge (24) of the second side surface (22) is represented by B, and the diameter (radius of curvature) to an arbitrary position along the axial direction of the outer circumferential surface (25) is represented by C, then A = B and A > C.

A mounting base of an ocean platform crane comprises a pedestal and a bearing device. The pedestal comprises an upper pedestal body and a lower pedestal body, the lower half part of the upper pedestal body is of a square cylinder structure, the upper half part of the upper pedestal body is of a trapezoidal-table structure for transition, and the top of the upper pedestal body is of a cylindrical structure for transition. The lower pedestal body is of a square cylinder structure. A cylindrical hole is formed in the pedestal in a penetrating mode, the top of the cylindrical hole and the cylindrical structure are of a concentric-ring structure, and first reinforcing rib plates are arranged between the cylindrical hole and the inner wall of the upper pedestal body and are symmetrically distributed with the cylindrical hole as the axis center. Edges of the two sides of each first reinforcing rib plate are matched with the cross section between the cylindrical hole and the inner wall of the upper pedestal body in shape, the edge of the top of each first reinforcing rib plate upwards tilts from the cylindrical hole to the inner wall of the cylindrical structure, and the tail end of each first reinforcing rib plate is in arc transition. The bearing device comprises a rotating device supporting ring and is mounted at the top of the cylindrical structure. The mounting base of the ocean platform crane is stable in bearing, more uniform in stress and more compact, stable and reasonable in structure, and the manufacturing cost is lowered.

A slewer of an ocean platform crane comprises a bearing device, a rotating body and a driving device. The bearing device comprises a supporting ring body and fixing pieces which are installed on the outer side of the supporting ring body. The rotating body comprises an annular sleeve and two supporting arms; the annular sleeve is vertically installed at the top of the supporting ring body; first reinforcing rib plates are arranged between the inner sleeve wall and the outer sleeve wall of the annular sleeve and vertically distributed with an inner sleeve as the axis in a central symmetry mode; the two supporting arms are connected to the two sides of the annular sleeve correspondingly and are parallel to each other; the rear end of each supporting arm is of a triangular column structure; the outer side faces of the two triangular column structures are parallel to each other; and the supporting arms and the annular sleeve are of an integrated structure. The driving device is installed on the outer side of the bottom of the rotating body and used for driving the rotating body to move rotationally with the supporting ring body as a rotating shaft. The slewer of the ocean platform crane can effectively disperse the stress effect and is higher in overall strength and bearing capacity and more balanced and stable in stress.

Provided is a resin foam body that has high stress distributing capabilities and excellent heat resistance. A resin foam body according to the present invention has a cellular structure, an apparent density of 0.05 g / cm<3> to 0.50 g / cm<3>, a 50% compression load of 2.0 N / cm<2> to 30 N / cm<2>, and satisfies the relationship in formula (1) between the apparent density D (g / cm<3>) and the residue R (%) at 650 DEG C. (1): 1 <= {(100-R) / D} / 100 <= 10.