62results about How to "Ablation resistant" patented technology

The invention relates to a preparation method of aromatic thermosetting resin containing polycarboxyl metal phthalocyanine. The method includes: employing a phthalic anhydride method to prepare polycarboxyl metal phthalocyanine, adding the metal phthalocyanine into an aromatic thermosetting resin prepolymer monomer and mixing them uniformly, leaving the mixture to undergo a high temperature reaction so as to obtain two prepolymers, i.e. Cx-MPc-COOH and Ax-MPc-COOH, mixing the two prepolymers uniformly, performing high temperature curing, thus obtaining an aromatic thermosetting resin composite material containing polycarboxyl metal phthalocyanine. The various monomers for synthesizing the aromatic thermosetting resin are terminated by carboxyl and ester groups, the polycarboxyl metal phthalocyanine can undergo chain transfer reaction with the monomers so as to be introduced into a molecular network structure of aromatic thermosetting resin. The method makes use of the excellent electron donating ability of metal phthalocyanine to perform coupling with the conjugated structure of aromatic thermosetting resin, thus reaching the purpose of improving dielectric properties of aromatic thermosetting resin. With the properties of high temperature resistance, ablation resistance, easy adhesion and the like, the aromatic thermosetting resin prepared by the invention has important applications in micro-electronics, semiconductors, electromagnetic materials, electrical smart materials and other fields.

The invention discloses a tungsten carbide reinforced carbon matrix composite material and a preparation method. Mesocarbon microbeads are adopted as the matrix, and tungsten carbide ceramic is adopted as the reinforcement phase and is evenly distributed among the carbon microbeads so as to form a three-dimensional network tungsten carbide skeleton reinforced isotropic structure. The preparation method includes: firstly taking tungsten oxide particles and mesocarbon microbeads as the raw materials to prepare uniform and thickness controllable tungsten carbide coating coated mesocarbon microbead powder by molten salt process, then performing pre-press molding, and conducting discharge plasma sintering at 1500-1900DEG C to form a uniform three-dimensional network tungsten carbide ceramic skeleton, which can significantly improve the strength, ablation resistance and oxidation resistance of the carbon matrix, thus forming the isotropic carbon matrix composite material characterized by lowcost, low density and excellent mechanical properties, sintering performance and ablation resistance. Because of the excellent comprehensive performance, the tungsten carbide reinforced carbon matrixcomposite material can be widely applied to aerospace, national defense and other fields, and has broad application prospects.

The invention relates to a low-temperature ceramic flame-retardant functional masterbatch, which comprises the following components by mass: 10-25 parts of silicone rubber, 5-15 parts of silicone resin, 2-6 parts of aluminum hypophosphite, and 2-10 parts of glass microspheres 2-8 parts of montmorillonite, 10-25 parts of natural bone powder, 25-50 parts of synthetic ceramic bone powder, 1-2 parts of coupling agent, 1-3 parts of lubricant and 1-3 parts of dispersing agent. The invention also relates to a method for preparing low-temperature ceramicized flame retardant functional masterbatch, which improves the dispersibility and increases the carbon formation rate, so that the carbon layer with a multi-dimensional stable structure has a high precipitation rate and integrity rate. The flame retardant masterbatch prepared by the invention can be ceramicized at low temperature when the material encounters flame attack, and can form a continuous and dense ceramic oxygen barrier layer, which has the characteristics of high efficiency and environmental protection.

The invention provides a low-temperature rapid preparation method of a ZrO2-SiO2-based composite material. The method comprises the following steps: (a) weighing silicon oxide sol and ZrO2 micropowderaccording to a certain ratio, adding the ZrO2 micropowder into the silicon oxide sol and magnetically stirring for six or more hours to form suspension liquid of the silicon oxide sol doped with theZrO2 micropowder; (b) clamping a high-temperature-resistant inorganic fiber cloth or a thin-layer fabric by using a graphite die, putting the high-temperature-resistant inorganic fiber cloth or the thin-layer fabric in a vacuum container and vacuumizing, then sucking the suspension liquid obtained in the step (a) and completely dipping the high-temperature-resistant inorganic fiber cloth or the thin-layer fabric; then rapidly transferring the dipped high-temperature-resistant inorganic fiber cloth or thin-layer fabric into a drying oven for carrying out heat treatment for gelatinizing, naturally cooling to room temperature and solidifying, repeatedly carrying out overall dipping, gelatinizing and naturally cooling for 5-8 times; and (c) putting the obtained hard solid in a muffle furnace for carrying out high-temperature heat treatment under the treatment temperature being lower than 800 DEG C, finally cooling to the room temperature to obtain the ZrO2-SiO2-based composite material.

The invention provides a battery protective layer, a preparation method and its application in battery components. The battery protective layer includes a fireproof cloth and a functional layer arranged on the fireproof cloth, and the functional layer is mainly composed of epoxy A thermosetting resin layer formed by curing the resin matrix, epoxy resin curing agent, reinforcing filler, flame retardant and silane coupling agent. The battery protection layer of the invention has high strength, ablation resistance, heat shock resistance and flame retardancy, can withstand explosion impact, block sparks and inhibit combustion diffusion, effectively avoid battery fire or explosion, and improve battery safety during use.