6results about How to "Improve structural toughness" patented technology

This invention belongs to the field of heavy metal pollution remediation technology, and relates to the preparation and application of a cadmium passivating agent for weakly alkaline soil. The weakly alkaline soil cadmium passivating agent mainly comprises the following components by weight: 30-50 parts of a mineral complex, 40-60 parts of a bioactive component, and 5-15 parts of an auxiliary stabilizer. The mineral complex includes natural sepiolite, calcium-based bentonite, and a polyether-polyester diblock copolymer; the bioactive component includes microbial agents, phosphorus-modified biochar, lecithin, and phosphatidylserine; and the auxiliary stabilizer includes nano-hydroxyapatite and a chitosan-grafted polyaspartic acid complex. This weakly alkaline soil cadmium passivating agent exhibits excellent remediation effects on cadmium in contaminated soil, effectively preventing or reducing the entry of cadmium and other heavy metals into the food chain, and has significant market potential.

The invention provides a thermosetting sheath material for a nuclear power plant cable with a life span of 80 years. The thermosetting sheath material comprises the following components by weight: 100 parts of EVA; 20-30 parts of maleic anhydride grafted poly-4-methyl-1-pentene; 3-5 parts of a vulcanizing agent; 1-3 parts of a vulcanizing accelerator; 2-4 parts of an activator; 4-8 parts of a softener; 5-10 parts of an antioxidant; 2-6 parts of a reinforcing agent; 150-180 parts of an inorganic flame retardant; and 1-2 parts of a light stabilizer. The thermosetting sheath material for a nuclear power plant cable with a life span of 80 years of the invention improves the heat decomposition resistance and chemical resistance of EVA as a main material by combining EVA and maleic anhydride grafted poly-4-methyl-1-pentene, thereby improving its anti-aging ability. At the same time, the toughness inside the thermosetting sheath material can be significantly improved, thereby improving its strength in a harsh environment for a long time.

The invention relates to the technical field of electrical engineering, and provides a power transmission network frame extension planning optimization method and device considering an extreme scene. The method comprises the following steps: firstly, acquiring historical data of an extreme disaster scene of a power grid, and performing primary processing to obtain an extreme scene set; then, a power transmission network frame extension optimization objective function is constructed, and the power transmission network frame extension optimization objective function comprises an economic index and a stability index; then, constraint conditions are set based on the power transmission network frame extension optimization objective function; and finally, a TD3 algorithm improved based on a multi-task learning algorithm is adopted to solve and obtain a new energy multi-infeed power transmission network frame extension planning model based on the extreme scene set and the power transmission network frame extension optimization objective function. The overall anti-risk capability of the power grid is enhanced, the structural toughness of the power grid is enhanced, the safe operation level of the power grid under the extreme weather condition is comprehensively improved, and the emergency response capability under the extreme weather condition is enhanced. And the stability, the reliability and the anti-risk capability of the power grid are improved.

This utility model belongs to the field of axle housing technology and discloses a heavy-duty truck axle housing, including an axle housing body, a flange connected to the axle housing body, a mounting base, an upper leaf spring seat, and a lower leaf spring seat connected to the axle housing body. The upper leaf spring seat and the lower leaf spring seat are respectively provided with upper mounting holes and lower mounting holes, and are respectively provided with upper leaf spring filling and reinforcing surfaces and lower leaf spring filling and reinforcing surfaces. The upper leaf spring seat is connected to a large arc transition rib, which is connected to the axle housing body. The upper leaf spring seat is also connected to a flange side transition rib, which is connected to the axle housing body. The lower leaf spring seat is connected to a connecting rib, which is connected to the axle housing body. This utility model enhances the overall structural strength of the axle housing, enabling the axle housing to stably bear loads under complex working conditions such as heavy loads and bumps, avoiding the problem of fatigue cracks or even fracture failure at the contact point between the axle housing and the leaf spring seat, and improving the load-bearing capacity and service life of the axle housing.

The present invention relates to a debris flow drainage and drag reduction culvert structure based on bionics, comprising a tunnel body, an entrance and an exit, a scale-shaped drag reduction structure is laid on the inner wall surface of the tunnel body, and the scale-shaped drag reduction structure covers all the inner wall surfaces of the entire tunnel body; wherein, the scale-shaped drag reduction structure is formed by continuously laying and splicing a plurality of scale units, the scale unit having a top, a bottom and a waist, the top having an outwardly convex arc top side end face, the bottom having an inwardly concave arc bottom side end face, the waist having two symmetrically arranged inwardly concave arc waist side end faces, and all two adjacent scale units are seamlessly spliced; the bottom and top of each scale unit are arranged along the flow direction of the debris flow, the end face length of the outwardly convex arc top side end face is greater than the end face length of the inwardly concave arc bottom side; the thickness of the bottom of each scale unit is less than the thickness of the top, and the thickness from the bottom to the top changes uniformly. The present invention can avoid or reduce the siltation and blockage of the debris flow.

The utility model discloses a kind of anti-cracking prefabricated wallboards, it is related to prefabricated wallboard technical field, including prefabricated wallboard main part, the inside of prefabricated wallboard main part is provided with anti-cracking reinforcement component, the anti-cracking reinforcement component is used to enhance the anti-cracking performance of the prefabricated wallboard main part;The anti-cracking reinforcement component includes the fiber mesh layer being set in the inside of prefabricated wallboard main part, the inside of the fiber mesh layer is provided with staggered woven glass fiber layer, the inside of the glass fiber layer is provided with basalt fiber layer, the inside of the basalt fiber layer is provided with nanometer carbon fiber layer.The utility model constructs multilayer composite anti-cracking reinforcement component in the inside of prefabricated wallboard main part, realizes the significant promotion of wallboard overall anti-cracking performance, can solve the problem that traditional prefabricated wallboard is limited by single reinforcing material performance, leads to prone to crack, affects service life and building safety.