45results about How to "Good fire resistance and heat resistance" patented technology

The invention provides an autoclaved aerated concrete-type lightweight porous filling material, relates to the green chemical preparation of aerated concrete, and belongs to the fields of new environment-friendly fine chemical materials and green building materials. Silicon and calcium materials are used as the main raw materials, mixed with air-generating agents, regulators and air-entraining agents, after hydration reaction, casting into molds, pre-formation, cutting and molding, autoclave curing, and processing out of the kettle, etc. Autoclaved aerated concrete products made by technology. The dry density of the product is less than 236kg / m3, the compressive strength is more than 0.59MPa, the average diameter of pores is less than 0.48mm, and the qualified rate is more than 90%. By adding a small amount of saponin concrete air-entraining agent, the ratio of water to material in the production process, the amount of gas produced per unit of aluminum powder and pouring stability, as well as the volume, strength and quality of the product can be significantly improved. The invention is novel in concept, rich in raw materials, simple in process, low in cost, easy to implement, and widely popularized. The product is a new type of filling material, which has the functions of sound absorption, sound insulation, thermal insulation, and water surface floating.

The invention provides a drifting-proof blind rivet bolt and a connecting structure of a building appendage. The blind rivet bolt is provided with a fixing sleeve, and a metal rivet rod of the blind rivet bolt is provided with a dropping-proof riveting segment corresponding to the fixing sleeve; under the action of a tool, the fixing sleeve is pressed against a connecting part, an inner hole of the fixing sleeve is tightened and wrapped outside the dropping-proof riveting segment, and a bumpy inner-hole surface matching with dropping-preventing lines on the surface of the dropping-proof riveting segment is formed simultaneously; permanent connection is formed and welding is omitted. According to the drifting-proof blind rivet bolt, permanent and firm connection and dropping prevention can be realized, connecting strength is improved greatly, the requirement on shock absorption is met, and labor force and cost can be saved. Drifting-preventing and positioning relationship between the fixing sleeve and the building appendage is brought in, structure is simple, and using effect is good. The invention further provides a solution for fire proofing and heat resisting of the drifting-proof blind rivet bolt, and the drifting-proof blind rivet bolt is adaptable to various fire resisting areas.

The invention provides a high-safety undercutting anchor bolt and a connecting structure thereof. The undercutting anchor bolt comprises a fastening sleeve, and a metal anchor rod of the undercutting anchor bolt is provided with an anti-loose anchoring section. Under the action of a tool, the fastening sleeve tightly presses a connected part, an inner hole of the fastening sleeve shrinks to tightly wrap the anti-loose anchoring section, an concave-convex inner hole surface matching with an anti-loose stripe on the surface of the anti-loose anchoring section is formed, and accordingly permanent connection without welding is formed. A sleeve and an expansion component are two split independent elements, the sleeve of the undercutting anchor bolt is a plastic part, and one or multiple axial grooves are formed in the middle and the front of the outer wall of the sleeve. The undercutting anchor bolt has the advantages that permanent firm connection can be realized without welding, loosening is prevented, connection strength is improved greatly, anti-seismic requirements are met, and labor and cost can be saved; flexible anti-seismic measures are applied, so that anti-seismic performance is improved; by the aid of radial deformability of the sleeve and avoidance of the axial grooves, local bends in holes are penetrated to realize reliable connection, and cost is saved as reperforating is avoided.

The invention provides a load-bearing autoclaved aerated concrete wall material prepared by mixing saponin air-entraining agents, which uses calcium and silicon materials as main raw materials and mixes a small amount of air-entraining agents, regulators and air-entraining Air agent, the autoclaved aerated concrete is made by hydration reaction, pouring into mold, pre-formation, cutting and forming, autoclaving curing, and processing out of the kettle. The product has a dry density of <795 kg / m3, a compressive strength of >10.09 MPa, an average pore diameter of <0.45 mm, a dry thermal conductivity of <0.19 W·m-1·K-1, and a pass rate of >95%, which is higher than the national standard The formulated requirements for high-grade heavy-duty autoclaved aerated concrete blocks are a single wall material that can meet more than 65% of energy-saving requirements in cold regions of my country. By adding a small amount of saponin air-entraining agent, the ratio of water to material in the production process, the gas production per unit of aluminum powder and pouring stability, as well as the volume, strength and quality of the product can be significantly improved. The invention has the advantages of novel conception, abundant raw materials, simple process, low cost, environmental protection and energy saving, convenient implementation and greater popularization.

The invention discloses a high flame retardant heat preservation wallboard which comprises a base layer, an inner fiberboard layer attached to the upper portion of the base layer, a heat preservation layer attached to the upper portion of the inner fiberboard layer, a vacuum layer attached to the upper portion of the heat preservation layer, a protective layer attached to the upper portion of the vacuum layer, an outer fiberboard attached to the upper portion of the protective layer, a light reflective layer attached to the upper portion of the outer fiberboard, and a waterproof layer attached to the upper portion of the light reflective layer. The thickness of the outer fiberboard is a, the light reflective layer is b, the thickness of the vacuum layer is c, and a, b and c meet the relation that a+c=b / 2.

The invention provides a lightweight microporous autoclaved aerated concrete floating body material, which belongs to a new environment-friendly fine chemical material. Calcium and siliceous materials are used as the main raw materials, mixed with air-generating agents, regulators and air-entraining agents, after hydration reaction, casting into molds, pre-formation, cutting and molding, autoclave curing, and processing out of the kettle , Made of autoclaved aerated concrete products. The dry density of the product is less than 395 kg / m 3 , Compressive strength > 2.1 MPa, average pore diameter < 0.36 mm, pass rate > 96%. By adding a small amount of saponin concrete air-entraining agent, the ratio of water to material in the production process, the amount of gas produced per unit of aluminum powder and pouring stability, as well as the volume, strength and quality of the product can be significantly improved. The present invention is novel in concept, rich in raw materials, simple in process, low in cost, easy to implement, and has great popularization. Processing and construction of cages and heat-resistant fireproof layers.

The invention provides a heat-proof tail cabin structure of a rocket engine, comprising a tail cabin body, an assembly hole for assembling an engine nozzle is arranged on the tail cabin body, and a pressure ring is provided on the tail cabin body at a position corresponding to the assembly hole, The side of the pressure ring facing the center of the assembly hole is provided with a fitting part for filling the gap between the engine nozzle and the tail tank body, and the other side is set on the tail tank body, which corresponds to the position around the assembly hole A heat-proof ring is provided, and a fire-blocking ring is provided at the position corresponding to the pressure ring on the heat-proof ring, a filling gap exists between the fire-blocking ring and the fitting part of the pressure ring, and a packing assembly is arranged in the filling gap. The invention provides a rocket engine heat-proof tail cabin structure, which has good fireproof and heat-proof performance, can effectively prevent the tail flame of the rocket engine nozzle from affecting the equipment in the engine tail cabin, and ensures that the tail cabin can maintain continuous Stable operation is conducive to improving the overall safety and reliability of the rocket.