5 results about "Fire-resistance rating" patented technology

This invention belongs to the technical field of metal composite panels, specifically relating to a fire-resistant composite aluminum strip and its preparation method. The fire-resistant composite aluminum strip comprises an upper aluminum strip, a middle fire-resistant material, and a lower copper strip. The middle fire-resistant material comprises the following components by weight: 30-40 parts ethylene-vinyl acetate copolymer; 20-25 parts epoxy resin; 15-20 parts styrene-maleic anhydride copolymer; 10-15 parts linear low-density polyethylene; and 8-10 parts highly flame-retardant basalt fiber. The middle fire-resistant material provided by this invention has good mechanical properties, bonding properties, and excellent flame-retardant properties. Using it for bonding aluminum and copper strips can yield a composite aluminum strip with good bending strength and a high fire resistance rating, achieving an A1 fire rating, making it particularly suitable for fields with high flame-retardant requirements.

The utility model belongs to bridge engineering technical field discloses a kind of anchorage mass concrete curing device, including anchorage embedded part, heat preservation and moisture retention layer and fixed connection component, water-retaining curing film has sufficient moisture reserve and can slow-release own moisture evaporation, effectively reduce concrete moisture evaporation outward, prevent shrinkage crack caused by water loss, with long-term moisturizing effect;Fireproofing layer is attached to the side of water-retaining curing film away from mass concrete structure, with heat insulation capacity, prevent external high temperature or sudden drop in temperature directly act on concrete surface, buffer temperature difference change, reduce the risk of temperature crack caused by thermal stress;It has fireproof function simultaneously, with good fire resistance rating;Heat preservation and moisture retention layer is detachably fixedly connected with anchorage embedded part by fixed connection component, realize reliable, reusable fixed connection between curing layer and concrete structure, it is convenient to disassemble and reuse, improve service period, reduce construction cost.

This invention belongs to the field of coating technology, and specifically relates to a fire-retardant coating material for color-coated aluminum sheets and strips and its preparation method, comprising the following raw materials in parts by weight: 35-40 parts epoxy resin base, 25-30 parts composite modified flame retardant, 5-10 parts modified reinforcing filler, 3-6 parts char-forming accelerator, 1-2 parts dispersant, 0.5-1 part defoamer, 15-20 parts solvent, and 2-4 parts wear-resistant additive; wherein, the composite modified flame retardant is prepared by first modifying melamine cyanurate, then reacting it with a prepolymer synthesized from diethanolamine and adipic acid, and adding ammonium polyphosphate and expandable graphite; the modified reinforcing filler is prepared by treating silica with a silane coupling agent, and then reacting it with chitosan and zinc nitrate. This coating material, through the synergistic effect of its components, exhibits excellent fire resistance, adhesion, corrosion resistance, and bending resistance, and is suitable for surface protection of color-coated aluminum sheets and strips, effectively improving the fire resistance rating and service life of aluminum sheets and strips.

This invention discloses a water-based coating with fire-retardant and thermal insulation functions, its preparation method, and its application, relating to the field of water-based coatings. This water-based coating with fire-retardant and thermal insulation functions, through an innovative raw material ratio, combines inorganic and organic flame retardants, along with surface-treated insulating glass microspheres and a specific ratio of inorganic hybrid emulsion, successfully enabling the coating to simultaneously possess excellent fire-retardant and thermal insulation properties. Test results of Examples 1-3 show that the coatings all achieve a 1-hour fire resistance rating, with the lowest thermal conductivity reduced to 0.042 W / (m·K), far exceeding the performance of the control example, which only possesses basic fire-retardant functions and insufficient thermal insulation performance. When this multifunctional coating is applied to building exteriors, industrial equipment surfaces, and vehicle interiors, it can effectively prevent the spread of fire, ensure personnel safety, reduce energy consumption, and improve energy efficiency.

Fire resistant gypsum panels are provided herein, with assemblies including the same, and methods for making the same. A gypsum panel includes a set gypsum core and a mat facing material. The set gypsum core includes a fire resistant additive. The fire resistant additive consists essentially of clay, or a non-intumescent fire resistant additive. The panel displays an acceptable fire rating without requiring the use of vermiculite or intumescent materials.