61results about How to "Improve tensile and compressive strength" patented technology

The invention discloses a structural heat-preservation decoration integrated large-size prefabricated outer wall-hung plate and a manufacturing method thereof. The structural heat-preservation decoration integrated large-size prefabricated outer wall-hung plate comprises a plate body, wherein the plate body consists of a reinforced concrete surface layer and a heat-preservation layer which are compounded together from outside to inside; embedded parts are pre-buried into the plate body; a surface layer reinforced net is paved inside the reinforced concrete surface layer; a layer of heat-preservation layer reinforced net is paved inside the heat-preservation layer; truss reinforcing steel bars are connected between the surface layer reinforced net and the heat-preservation layer reinforced net; lower chord reinforcing steel bars of the truss reinforcing steel bars are fixedly connected with the surface layer reinforced net; the upper chord reinforcing steel bars of the truss reinforcing steel bars are buried in the heat-preservation layer; grooves and tongues for matching connection are respectively formed in the upper and lower ends of the wall plate. Due to adoption of the reinforced concrete surface plates and cement-based material heat-preservation layers with self-heat-preservation property, the wall plate is simple in structure, convenient to manufacture, low in cost, light in self-weight, convenient to mount and applicable to construction of direct outer pre-hung wall plates in a whole open room, can be produced on ordinary wall plate production lines, integrates structure, heat-preservation and decoration, and can be directly hung on a construction main body structure without being assembled again or paving keels.

The invention discloses a shield tunnel segment structure and a connecting structure thereof. The shield tunnel segment structure comprises a segment body and is characterized in that the segment body is mainly composed of a steel plate layer, a concrete layer wrapping the steel plate layer, and steel mesh reinforcements which are located on the two sides of the steel plate layer correspondingly and embedded in the concrete layer; the lateral edges of the segment body are fixedly provided with metal connectors, the outer sides of the metal connectors are provided with grooves for containing water stops, and the water stops are installed inside the grooves; and an outer protecting layer is arranged on the outer side of the segment body, and the outer protecting layer is a polyurea layer combined on the outer side surface of the segment body. The connecting structure is composed of two adjacently arranged shield tunnel segment structures and a connecting part for connecting the two shield tunnel segment structures. A connecting steel plate is composed of a middle arc-shaped section and flat sections on two sides. The shield tunnel segment structure and the connecting structure thereof have the characteristics that thickness is small, strength is high and the connectors are not prone to damage; and the connector deformation control effect is good, the seam waterproof effect is good, durability is high, and repairing is convenient.

The invention relates to a glass fiber reinforced plastic water tank crack repairing technology. The technology comprises the following steps of polishing inner cracks of a glass fiber reinforced plastic water tank until a first-layer glass fiber cloth is exposed, respectively drilling two technique holes at two ends of the crack, cutting a metal filter screen and glass fiber cloths, uniformly coating the cracks with a prepared resin binder, pasting the first-layer glass fiber cloth, carrying out blade coating with the resin binder, pasting the second-layer glass fiber cloth, carrying out coating with the binder, simultaneously pasting the third-layer glass fiber cloth and the metal filter screen, repeating the above binder coating and pasting processes until the 4th-6th glass fiber cloths are pasted, then carrying out blade coating on the last-layer glass fiber cloth with the resin binder and carrying out curing. The technology has simple processes and a low cost, contains the stainless steel metal filter screen sandwich, improves repaired layer tensile and compressive strength and is free of water tank replacement.

The invention relates to the technical field of lithium ion batteries, and particularly discloses a square lithium ion battery shell. The square lithium ion battery shell comprises a shell cover, a shell body and a bottom plate; the shell body is provided with a predetermined space for accommodating the shell cover; the shell cover and the bottom plate are respectively and fixedly connected with the shell body to form a whole; the shell cover is provided with a pole post; and an internal thread and an external thread are arranged in the pole post. The invention also discloses a square lithium ion powder battery using the battery shell. The square lithium ion battery shell and the square lithium ion powder battery using the same are particularly suitable for occasions, on which massive connection in series or parallel and long-term vibration occur, such as an energy storage powder supply, a vehicle powder battery, an electric bicycle, a motorcycle and the like.

The invention discloses a material for producing a FRPP ribbed tube with large diameter and a production technology using the material to produce the FRPP ribbed tube with large diameter. The materials for producing the FRPP ribbed tube with large diameter include the following components and parts by weight: 100 parts by weight of polypropylene resin, 10-12 parts by weight of glass fiber, 15-18 parts by weight of heavy calcium carbonate, 8-9 parts by weight of toughening agent, 2-2.5 parts by weight of compatibilizer, and 0.2-0.5 parts by weight of PE wax. The production technology using the material to produce the FRPP ribbed tube with large diameter includes that firstly the raw materials are proportioned according to the definite weight ratio; then the formulations are mixed in a high-speed mixer in high speed; after that the mixed materials are introduced into an extruder for extrusion granulation; the resulting granular materials are further processed by 92 double screw extruder; and finally the resulting products are extruded and formed by a ribbed tube forming machine followed by cooling and fixed length cutting.

The invention provides a cable protection pipe resistant to tension and compression. The cable protection pipe comprises a first opening protection pipe, a second opening protection pipe and a fixing device. The first and second opening protection pipes both have a semi-circular cross section. The first opening protection tube comprises a first inner protection pipe layer and a first outer protection pipe layer. The inner side of the first outer protection pipe layer is provided around the first inner protection pipe layer with a plurality of first support cavities having a triangular cross section. Each first support cavity is provided internally with a first flexible tension resistant body. The second opening protection pipe comprises a second inner protection pipe layer and a second outer protection pipe layer. The inner side of the second outer protection pipe layer is provided around the second inner protection pipe layer with a plurality of second support cavities having a triangular cross section. Each second support cavity is provided internally with a second flexible tension resistant body. The fixing device comprises a first fixing member and a second fixing member. The invention has the advantages of simple structure, high resistance to tension and compression, fixation, firmness, and good protection effect.

The invention provides a method for preparing a rubber reinforcing filler by utilizing iron tailings. The method comprises the steps of iron tailing pre-desliming, iron tailing grading and regrinding, high-purity glass sand preparation and modified quartz sand preparation. The method for preparing the rubber reinforcing filler by utilizing the iron tailings can fully utilize high-silicon iron tailing resources to prepare the high-value-added rubber reinforcing filler, the filler is small in particle diameter and regular and uniform in shape, has strong rubber interface binding power and can effectively improve the abrasion resistance, toughness, compressive strength, fatigue resistance property and other mechanical properties of rubber, and the comprehensive utilization value of the iron tailings is improved.

The invention discloses a method for preparing a lithium battery aluminum-plastic composite film through coextrusion. The lithium battery aluminum-plastic composite film sequentially comprises an explosion-proof protective layer, a protective layer attaching layer, a first grafting composite layer combined with an aluminum foil, an aluminum foil layer, a second grafting composite layer combined with an aluminum foil, a heat sealing layer attaching layer and a heat sealing layer from outside to inside, wherein the protective layer attaching layer and the first grafting composite layer adopt lamination coextrusion and the second grafting composite layer and the heat sealing layer attaching layer adopt lamination coextrusion. The method disclosed by the invention has the advantages that the integral tensile strength and the compressive strength of the composite film are greatly increased; the attaching fastness of the composite film is almost 30% higher than that of like products adopting dry lamination and is up to more than 10N; and therefore, the stamping forming of the composite film is more benefitted and even the domestic aluminum foil can replace the aluminum foil imported from Japan to be applied to stamping.

The invention discloses a thermal insulation board for an outer wall, which comprises a thermal insulation layer and an interface layer, and the thermal insulation layer adopts inorganic fiber cotton. The important feature of the present invention is that the fiber orientation of the inorganic fiber cotton is perpendicular to the interface layer and the wall surface. This makes the drawing direction of the inorganic fiber cotton parallel to the direction of the wind and the direction of the force after installation, which improves the tensile and compressive strength and resists the damage to the wall caused by the wind pressure.

The invention discloses a preparation method of a reinforced cement-based concrete non-splicing type woven pipe. The preparation method comprises the following steps that A, fiber raw materials for preparing the concrete woven pipe are selected; B, based on a special organization structure, warp yarns are arranged according to a specific rule, and weft yarns are continuously fed in a shuttle mode;and C, according to a specific interweaving rule, a tubular fabric with uniform axial and circumferential structures is prepared. According to the preparation method, the tubular fabric can be prepared by adopting the single weft yarns, the overall structure is uniform, the designability is high, corrosion resistance is achieved, the weight is light, the preparation method can be used for enhancing the axial tensile and compressive properties of the overall structure of cement-based concrete, the tensile and compressive strength of the cement-based concrete is improved, the compression-shearfailure is reduced, the overall sudden brittle fracture is avoided, the safety coefficient of related engineering is improved, the preparation method can be used for reducing the brittle failure of the cement-based concrete, and the preparation method can also be used for preparing cement-based concrete structural parts.

The invention discloses a fireproof color steel sandwich panel and a preparation method thereof, which belong to the field of color steel sandwich panels. Gridding cloth and anti-cracking balls A are combined and jointly formed in a phenolic foam board, and the phenolic sandwich panel with excellent heat preservation and fireproof performance is obtained; meanwhile, the tensile strength and compressive strength of the phenolic foam board are improved through the gridding cloth, the cracking and pulverization conditions of the phenolic foam board are reduced, then the overall performance is improved, cracks in the phenolic foam board with the cracking and fragmentation conditions can be repaired through the anti-cracking balls A, the fragmented phenolic foam board is bonded again, the phenolic foam board recovers a certain degree of strength performance, cracks are not prone to fragmentation, extension and expansion due to external force, the mechanical strength of the phenolic foam board is effectively enhanced, and therefore double guarantee measures are provided for the mechanical strength of the phenolic foam board.

The invention discloses special joint filling mortar for light partition wallboards. The special joint filling mortar comprises, by weight, 300-400 parts of cement, 100-140 parts of fly ash, 400-450 parts of fine sand, 30-60 parts of calcined gypsum powder, 2-10 parts of macromolecule xanthan gum powder, 1-10 parts of redispersible latex powder, 1-3 parts of starch ether, 1-3 parts of cellulose ether, 1-3 parts of set retarders, 40-60 parts of expansive agents, 2-8 parts of graphene oxide modified carbon fibers and 1-5 parts of water repellents. A mass ratio of the macromolecule xanthan gum powder to the redispersible latex powder is 2-7:1; an expansion coefficient of the calcined gypsum powder is 120-130, and a mass ratio of graphene oxide to carbon fibers is 0.05-0.1:1. The special jointfilling mortar for the light partition wallboards has the advantages that various components of the special joint filling mortar are selected, the weights of the various components are matched with one another, respective excellent properties of the various components are comprehensively utilized, the strength of the components is drawn, and accordingly the special joint filling mortar is high inbonding strength, tensile and compressive property and water retention rate and low in shrinkage.

The invention discloses a silicon carbide fiber cable material and a preparation method thereof. The silicon carbide fiber cable material is prepared from the following raw materials in parts by weight: 30 to 50 parts of organic silicon modified acrylate, 35 to 45 parts of epoxy resin, 20 to 30 parts of BNDB, 5 to 15 parts of styrene, 10 to 20 parts of No. 800 paraffin base rubber oil, 9 to 15 parts of pentaerythritol, 10 to 20 parts of chlorinated polyethylene, 10 to 20 parts of ethylene-octene copolymer elastomer, 8 to 12 parts of silicon carbide fiber, 4 to 8 parts of active magnesium oxide, 4 to 8 parts of active zinc oxide, 6 to 12 parts of calcium carbonate, 3 to 7 parts of microcrystalline wax, 1 to 5 parts of plasticizer, 1 to 5 parts of fire retardant, 1 to 5 parts of antioxidant and 1 to 3 parts of stabilizer. The preparation method of the silicon carbide fiber cable material comprises the steps of performing crushing, inductive heat treatment, mixing, pelleting and the like on the raw materials. The silicon carbide fiber cable material provided by the invention is simple in preparation, excellent in flame retardant property, and good in waterproofness and corrosion resistance, does not easy to age, is high in tensile strength and compressive strength and long in service life, can be widely applied in various fields, and has a good market prospect.

The invention discloses an umbilical cable for ocean engineering equipment. The umbilical cable comprises a central air pipe, control cable cores, a first shielding coating layer, power cables and a second shielding coating layer, wherein the control cable cores are wound in a first groove in a peripheral surface of the central air pipe through screws, the first shielding coating layer is matched with the control cable cores exposed out of the peripheral surface of the central air pipe, the power cables are matched with a second groove spirally arranged in the peripheral surface of the first shielding coating layer, and the second shielding coating layer is matched with the power cables exposed out of the peripheral surface of the first shielding coating layer. In the structural design, the tensile strength, the compressive strength and the corrosion resistance of the cable can be effectively improved through spiral winding layer by layer.

The invention discloses an anti-explosion anti-shock steel deck pavement structure, and belongs to the technical field of bridge construction works. The structure comprises an orthotropic steel deck plate, an Eliminator waterproof adhesive layer, a Kevlar laminated sheet, an adhesive layer, a steel fiber concrete anti-explosion layer and an asphalt concrete wearing layer which are sequentially arranged from bottom to top. A welding stud-rubber flexible combination connector is welded on the upper surface of the orthotropic steel deck plate, and reinforcing meshes are arranged inside the steelfiber concrete anti-explosion layer. The integrity of the pavement structure is enhanced by the flexible combination connector, shear stiffness is reduced, the stress state of the steel fiber concreteanti-explosion layer is improved, applicability of the deck pavement structure is improved, the reinforcing meshes, the steel fiber concrete anti-explosion layer and the Kevlar laminated sheet form aprotection structure of the deck pavement structure, and the anti-explosion and anti-shock performances of the steel deck plate and an internal structure thereof are effectively improved.

The invention discloses vitrified microbead thermal insulation mortar and a preparation method thereof. The thermal insulation mortar is prepared from the following raw materials: portland slag cement, lime paste, river sand, vitrified microbeads, sugar calcium, calcium carbonate, white latex, modified attapulgite clay powder, sodium lignin sulfonate, barium stearate, polyester fibers, hydroxypropyl methyl cellulose, polyvinyl alcohol, an organosilicon waterproofing agent and water. The preparation method comprises the following steps: firstly mixing the raw materials such as the vitrified microbeads and sugar calcium, and uniformly stirring, so that slurry A is obtained; then mixing the raw materials such as sodium lignin sulfonate, and uniformly stirring, so that slurry B is obtained; and finally conveying the portland slag cement, the lime paste and the river sand to a mortar stirring machine, and sequentially adding the slurry B and the slurry A, so that the vitrified microbead thermal insulation mortar finished product is obtained. The thermal insulation mortar disclosed by the invention has the advantages that tension and compression strengths and thermal insulation and sound insulation performances are further enhanced compared with the national standard and existing thermal insulation mortar, so that the problems of empty drums, cracks and drops are hardly caused when the mortar disclosed by the invention is applied to a wall body, and durability and practicability of the mortar are improved.

The invention discloses a foundation structure of an open caisson stereo garage, and belongs to the technical field of stereo garage construction. The foundation structure comprises an underground wall body, the underground wall body is divided into a plurality of upper and lower layers along the height; each layer is divided into a plurality of steel foundation units along the circumferential direction; the thickness of the steel foundation units located on the upper layer is smaller than that of the steel foundation units located on the lower layer. A connecting mechanism is arranged betweenevery two adjacent steel foundation units. Each steel foundation unit comprises a steel box body, a box body inner cavity is formed in the steel box body, a pouring gate is formed in the steel box body, and concrete is poured in the box body inner cavity. The foundation structure solves the technical problems that an underground stereo garage is long in construction period, low in structural strength and high in manufacturing cost, and is widely applied to stereo garage construction.