3results about How to "Act as a skeleton support" patented technology

The invention provides a neodymium-iron-boron permanent magnet and a preparation method and application thereof. The neodymium-iron-boron permanent magnet comprises a neodymium-iron-boron base body and a double-resistance film layer arranged on the surface of the neodymium-iron-boron base body. The preparation raw materials of the double-resistance film layer comprise organosiloxane, nanoparticles and a curing agent; the nano-particles comprise any one or a combination of at least two of titanium dioxide nano-particles, silver nano-particles, silver-titanium dioxide composite nano-particles, zinc oxide nano-particles and cerium oxide nano-particles. Organosiloxane and specific nanoparticles are introduced into the film layer of the neodymium-iron-boron permanent magnet, so that the film layer realizes inactivation of bacteria adhered to the surface of the film layer on the basis of having a traditional anti-corrosion function, and the neodymium-iron-boron permanent magnet has anti-corrosion and antibacterial characteristics; compared with electroplating nickel and other plating layers used by a traditional neodymium-iron-boron permanent magnet, the film layer provided by the invention has more excellent corrosion resistance and more excellent environment-friendly characteristic, and the magnetic performance of the neodymium-iron-boron permanent magnet is not influenced.

The invention relates to the technical field of special garments, in particular to military and police dual-purpose stab-proof bulletproof warm-keeping clothes and trousers which comprise an upper garment and trousers, and stab-proof bulletproof warm-keeping materials are arranged on the upper garment and the trousers. The stab-resistant bulletproof thermal insulation material comprises an aromatic polyamide fiber pressing layer, organic aerogel and a carbon fiber grid layer. According to the invention, the aromatic polyamide fiber pressing layer is matched with the organic aerogel and the carbon fiber grid layer to prepare the stab-resistant bulletproof thermal insulation material. The aromatic polyamide fiber has better mechanical property, heat resistance and insulating property. The organic aerogel has high heat insulation and heat preservation effects and impact resistance, and the puncture-proof and bulletproof effects of the material can be effectively improved when the organic aerogel is compounded in the material. According to the invention, a plurality of layers of overlapped grid carbon fibers are added in the material, so that a bayonet or a dagger can be effectively prevented from piercing. The grid structure of the carbon fiber can play a role in skeleton supporting when the aerogel is compounded, and can form net-shaped tension in the aerogel, so that the stab-resistant and bulletproof capabilities of the aerogel are further improved.

This invention discloses an eco-friendly concrete cementitious material and eco-friendly concrete, belonging to the field of building materials technology. This invention provides an eco-friendly concrete cementitious material that significantly improves the mechanical properties of eco-friendly concrete through the scientific compounding and synergistic effect of its components. Sulfoaluminate cement, as the main cementitious material, provides early strength and micro-expansion characteristics, effectively compensating for shrinkage. Mineral powder and silica fume, as active mineral admixtures, not only exert a micro-aggregate filling effect, densifying the microstructure of the hardened body, but also consume Ca(OH)2 in the system through a secondary hydration reaction, initially reducing the risk of efflorescence. Gypsum not only regulates the setting time but also promotes the formation of ettringite, improving the strength of the concrete matrix. By adding modified mesoporous silica, the alkali-sealing performance and mechanical properties of eco-friendly concrete can be significantly improved.