8results about How to "Effective stress" patented technology

The invention provides a recycled carbon fiber reinforced polypropylene composite material as well as a preparation method and application thereof, and the recycled carbon fiber reinforced polypropylene composite material comprises 75-90 parts of polypropylene, 10-20 parts of modified recycled carbon fiber, 0-3 parts of a compatilizer, 0.2-0.5 part of an antioxidant, 0.1-0.2 part of a light stabilizer and 0.3-1 part of a coloring agent. The modified recycled carbon fiber is obtained by sequentially carrying out supercritical treatment and silane coupling agent treatment on recycled carbon fiber. According to the invention, organic matters and oxide layers remained on the recovered carbon fibers are removed through supercritical treatment, and the surface energy of the carbon fibers is enhanced, so that the surface energy of the carbon fibers is closer to that of polypropylene, and the compatibility of the carbon fibers and the polypropylene is improved; on the other hand, the supercritical treatment can improve the surface roughness of the recycled carbon fibers, increase the surface activity of the recycled carbon fibers, enable the recycled carbon fibers to be more strongly combined with a silane coupling agent, enable the surface energy of the grafted carbon fibers to be further improved, enable the grafted carbon fibers to be more compatible with a polypropylene matrix, enable the binding power between the recycled carbon fibers and polypropylene to be enhanced, and effectively transmit stress; and the mechanical strength, rigidity and toughness of the composite material are obviously improved.

The invention discloses a rotary workbench, relates to the technical field of auxiliary processing equipment, and solves the problem that in the rotating process of an existing testing mode, a pipe product may be loosened or fall off due to infirm fixation, and consequently testing is interrupted or the pipe product is damaged. The testing device comprises a testing frame, a fixing plate vertically arranged at the top of the testing frame, a rotating seat rotationally connected to the fixing plate, and a control piece used for controlling the rotating seat to rotate. The rotating seat comprises a connecting plate connected with the control piece and a mounting plate arranged on the connecting plate, and the mounting plate is provided with a clamping piece. The fixing device has the effect of improving the fixing effect on the pipe product.

This utility model discloses a crochet rope structure with an anti-corrosion coating, comprising a crochet rope body, which includes a core layer, a reinforcing braid layer, a buffer layer, and a coating layer, arranged sequentially from the inside out. The coating layer includes a base layer, an intermediate layer, and a top layer. The base layer is located inside the intermediate layer and is made of an epoxy resin and nano-clay composite material. The intermediate layer is located inside the top layer and is made of epoxy zinc-rich coating. The top layer is made of epoxy glass flake coating. The surface of the coating layer is coated with a fluorocarbon topcoat. This structure achieves corrosion resistance, increases practicality, and solves the problem that crochet ropes often face environmental erosion during use, leading to decreased rope strength, fiber breakage, and reduced service life.

The application relates to a core single piece, a stator core, a motor, a processing device and a processing method. The core single piece comprises a first alloy area and a second alloy area. The first alloy area has a tooth part and a first yoke part. The first yoke part is arranged at the outer periphery of the tooth part. The second alloy area has a second yoke part. The second yoke part is arranged at the outer periphery of the first yoke part. The second alloy area comprises a plurality of atoms arranged in a disordered state. The magnetic permeability of the first alloy area is greater than that of the second alloy area. The magnetic permeability of the first alloy area in the core single piece provided by the application is greater than that of the second alloy area. The material can be a new soft magnetic material after annealing. Since the second alloy area comprises a plurality of atoms arranged in a disordered state, the periphery of the first alloy area can be protected. When the outer periphery of the core single piece and the stator core is subjected to external force, the stress can be more effectively dispersed and resisted, and the structural strength and process performance of the core single piece can be improved.

The invention discloses an anti-wrinkle polyamide fabric and a production process thereof, and belongs to the technical field of textile fabrics, and the production process comprises the following steps: S1, preparation of a padding finishing emulsion: adding deionized water into a modified anti-wrinkle finishing agent while stirring to form an emulsion, then adding a penetrant JFC, and continuously stirring and mixing to obtain the padding finishing emulsion; s2, preparation of an anti-wrinkle polyamide fabric: adding a polyamide fabric into the padding finishing emulsion, carrying out padding treatment, pre-drying at 80 DEG C for 3 min, baking at 120-130 DEG C for 3 min, washing with water, and drying to obtain the anti-wrinkle polyamide fabric, according to the invention, the padding finishing emulsion with good stability is introduced, so that the reaction inactivation of isocyanate groups and water is effectively avoided, the anti-wrinkle activity of the modified anti-wrinkle finishing agent is improved, and meanwhile, the polyamide fabric is endowed with good flexibility by introducing the modified organic silicon resin, so that the modified polyamide fabric can better maintain the original strength.

The utility model relates to the technical field of tarpaulin, and discloses waterproof terylene tarpaulin, which is characterized in that terylene base cloth and PU waterproof layers on the upper and lower surfaces of the terylene base cloth form a tarpaulin main body; the tear-resistant layer is clamped between the polyester base cloth and the PU waterproof layer; two sides of the hot melt adhesive layer A are respectively hot-pressed and bonded with the anti-tear layer and the polyester base cloth, and two sides of the hot melt adhesive layer B are respectively hot-pressed and bonded with the anti-tear layer and the PU waterproof layer; a flow guide groove for guiding water flow to be discharged along the groove to prevent accumulated water from permeating is formed in the outer surface of the hot melt adhesive layer B through pressing. The tear-resistant layer, the polyester base cloth and the PU waterproof layer are bonded together through the hot melt adhesive layer A and the hot melt adhesive layer B to form an integrated structure, the problem of needle hole water seepage caused by traditional sewing is avoided, and the problem of water accumulation of the tarpaulin is solved through the design of the flow guide grooves.

This invention provides an aluminum-silicon carbide composite material, its preparation method, and its application. The aluminum-silicon carbide composite material comprises alternating layers of silicon carbide and aluminum material; the number of aluminum material layers is greater than the number of silicon carbide layers; the thickness of the silicon carbide layers is 5 μm to 0.5 mm, and the thickness of the aluminum material layers is 1 μm to 0.15 mm. This invention can reduce the thickness of the aluminum-silicon carbide composite material while simultaneously improving its mechanical strength.

The utility model provides tropical bubble cap aluminum for medicine packaging, which comprises a bonding frame, a side lug, a bonding frame, a bent lug, a handle lug, a sealing aluminum film and an anti-tearing film, the bent lug is compositely fixed on the side lug integrally arranged at one end of the bonding frame, the bent lug is integrally arranged at one end of the bonding frame, and the handle lug is integrally arranged at the other end of the bonding frame. A lifting handle lug is integrally arranged at the other end of the bonding frame, a sealing aluminum film is compounded and fixed on the outer surface of the bonding frame, and an anti-tearing film is compounded and fixed on the surface of the sealing aluminum film; according to the utility model, the sealing aluminum film compounded by the PA film, the AL film and the VC glue layer is matched with the PU movable glue, so that multiple sealing is formed, and the water resistance and oxygen resistance are improved; the anti-tearing strength is enhanced by an oblique line frame anti-tearing film; the components such as the bonding frame are matched to realize flexible opening and closing and repeated sealing; and the inclined plane matching design ensures the structural stability, adapts to various packages and is high in practicability.