16results about How to "Insulate from heat" patented technology

The invention discloses a medical silica gel sealing ring material and a preparation method thereof, and relates to the field of silica gel materials. When the medical silica gel sealing ring material is prepared, mica powder, phytic acid, diglycidyl ether and allyl glycidyl ether are uniformly mixed and react to obtain modified mica powder; the preparation method comprises the following steps: reacting 4-(2-aminoethyl) phenylboronic acid with 3, 3 '-dihydroxy-[1, 1'-biphenyl]-4, 4 '-diformaldehyde to obtain a graft; the preparation method comprises the following steps: reacting vinyl silicone oil, thioglycerol and methacryloylethyl sulfobetaine to obtain modified silica gel; uniformly mixing the modified silica gel, the modified mica powder and the graft, and reacting to obtain the medical silica gel sealing ring material. The medical silica gel sealing ring material prepared by the invention has excellent flame-retardant, anti-aging, antifouling and mechanical properties.

The invention discloses an anti-aging and anti-electromagnetic shielding cable and a preparation method thereof, and belongs to the field of high voltage and the technical field of materials, the anti-aging and anti-electromagnetic shielding cable structurally contains a polyurethane-polyethylene copolymer and a flame-retardant and anti-electromagnetic sheet composite carrier, contains a polyurethane chain segment which is connected with a polyethylene main chain through a covalent bond, has no interface separation risk, and has good anti-aging and anti-electromagnetic shielding effects. Polyethylene is resistant to acid, alkali and salt mist, a carbamate group in a polyurethane chain segment can capture free radicals generated by photooxidation and thermal oxidation of polyethylene, aging is delayed from the molecular level, and the flame-retardant anti-electromagnetic sheet composite carrier endows the cable with good aging resistance and anti-electromagnetic shielding characteristics; the lamellar structure of the sheet-shaped carrier can block heat transfer and combustible volatilization, and the lamellar structure and the sheet-shaped carrier synergistically improve the flame-retardant efficiency; the introduction of the flaky composite carrier not only endows functional characteristics, but also can be used as a rigid reinforcement phase, so that the wear resistance and the extrusion resistance of the cable are improved, and the loss of the cable in the dragging and construction processes is reduced.

This invention provides a low-density flame-retardant thermally conductive foam powder filler, composed of the following components in parts by weight: 200-300 parts of boron nitride (80-100 micrometers); 200-300 parts of hollow glass microspheres (50-70 micrometers); 200-300 parts of aluminum hydroxide (8-10 micrometers); 200-300 parts of aluminum hydroxide (1-2 micrometers); and 2-4 parts of coupling agent. Its advantages are: 1. Low density: By introducing low-density hollow glass microspheres, the overall density of the filler is effectively reduced, meeting lightweight design requirements. 2. High thermal conductivity: The compound boron nitride forms a highly efficient thermal conductivity network. 3. Excellent flame-retardant performance: The halogen-free flame retardant aluminum hydroxide works synergistically with the hollow glass microspheres. The hollow glass microspheres form a glassy barrier at high temperatures, isolating oxygen and heat, achieving excellent flame-retardant effects. 4. Good dispersibility and compatibility: By modifying the powder surface with silane coupling agent, a "molecular bridge" is formed between the inorganic powder and the organic polymer matrix, which significantly reduces agglomeration, lowers the interfacial thermal resistance, and significantly reduces the viscosity of the system.

This invention discloses a novel in-situ solid electrolyte and its preparation method, comprising: mixing precursor A and precursor B, and carrying out a hydrolysis-condensation reaction under the action of a catalyst to obtain a POSS-based curing agent with R1 and R2 groups; in an inert environment, sequentially mixing the POSS-based curing agent, a double lithium salt, an organic solvent, and an initiator to obtain a precursor liquid; injecting the precursor liquid into a battery casing and allowing it to stand and soak, so that the precursor solution can fully penetrate the electrode pores; heating the battery after liquid injection at 45-80°C for 4-24 hours to initiate the polymerization and cross-linking of the R2 groups to form a three-dimensional network, and the R1 groups undergo microscopic phase separation to repel the electrolyte phase, constructing ion transport channels in the POSS cross-linked network, while the POSS framework adsorbs and fixes anions, thus forming a solid electrolyte in situ; improving the rate performance of the battery and effectively eliminating the risk of lithium dendrite precipitation under low-temperature fast charging conditions.

This invention discloses a heat- and impact-resistant protective conduit for MPP cables and its preparation method, relating to the field of polymer materials technology. The components, by weight, include: 20-22 parts of a toughening dispersion made from anhydrous ethanol and terminally epoxy-terminated hyperbranched polysiloxane; 33-35 parts of a boron-nitrogen co-doped carbon dot made from citric acid, boric acid, and urea, first compounded with phytic acid and piperazine, then compounded with modified zirconium phosphate prepared by hexadecyltrimethylammonium bromide intercalation, and then modified with silane coupling agent KH-560 to form a flame retardant synergist; 12-14 parts of polyolefin elastomer; 2-2.5 parts of magnesium aluminum hydrotalcite; 0.2-0.24 parts of antioxidant; 0.2-0.3 parts of calcium stearate; 0.2-0.3 parts of polyethylene wax; and 100-120 parts of polypropylene. The introduction of the flame retardant synergist and other raw materials in this invention effectively improves flame retardancy, aging resistance, impact resistance, low-temperature resistance, and heat resistance.

The invention provides a flame-retardant antistatic nylon fiber with a skin-core structure and a preparation method of the flame-retardant antistatic nylon fiber, and belongs to the technical field of nylon fibers. The flame-retardant antistatic nylon fiber comprises an antistatic nylon skin layer and a flame-retardant nylon core layer, the outer surface of the flame-retardant nylon core layer is coated with the antistatic nylon skin layer, the antistatic nylon skin layer comprises a nylon 6 matrix and an antistatic agent, and the antistatic agent is aniline modified zirconium phosphate; wherein the aniline modified zirconium phosphate is obtained by carrying out in-situ polymerization on aniline monomers between stripped zirconium phosphate layers. The flame-retardant antistatic nylon fiber is obtained through sheath-core composite melt spinning. According to the invention, the antistatic agent and the flame retardant are efficiently and stably introduced into the nylon matrix, and the synergistic effect of the antistatic agent and the flame retardant is realized, so that the fiber has better spinnability and mechanical property, and meanwhile, the long-term effect and durability of the function are ensured.

This utility model discloses a flat, fire-resistant, silicone rubber flame-retardant cable, relating to the field of cable technology. It includes a cable core composed of multiple sets of parallel-distributed wire cores, each core comprising a conductor, an insulation layer, and a shielding layer. A fire-resistant layer, a flame-retardant layer, and an outer sheath are sequentially disposed outside the cable core. The fire-resistant layer consists of a hardened inner layer and a high-temperature resistant outer layer. The hardened inner layer is a ceramicized silicone rubber layer, and the high-temperature resistant outer layer is a mica tape wrapping layer. The flame-retardant layer consists of a buffer layer and a flame-retardant outer coating layer. The buffer layer is aluminum hydroxide-filled silicone rubber, and the flame-retardant outer coating is an intumescent flame-retardant coating. This solution solves the problems of unstable cable operation in high-temperature environments and performance degradation in complex environments.

The application discloses a kind of polypropylene flame-retardant plastic and its preparation method and application, it is related to high polymer material technical field.A kind of polypropylene flame-retardant plastic, by following mass parts of raw materials composition: polypropylene 70-80 parts, halogen-free flame retardant 15-25 parts, flame-retardant synergist 1-5 parts, toughening agent 5-15 parts, antioxidant 0.1-0.5 parts, lubricant 0.5-2 parts.The application adopts specific structure halogen-free flame retardant, collocates flame-retardant synergist, can form dense stable carbon layer on polypropylene matrix surface, effectively insulates heat and oxygen, inhibits combustible gas release, to significantly improve flame-retardant performance, reduce combustion spread speed, improve vertical combustion grade.

The utility model relates to the technical field of fireproof doors, and discloses a fireproof door structure with good fireproof performance, which comprises a mounting frame, a hinge is fixedly connected to one side of the outer wall of the mounting frame, a fireproof shell is fixedly connected to one side of the outer wall of the hinge, and a door closer is fixedly connected to one side of the outer wall of the fireproof shell. One side of the door closer is arranged on one side of the outer wall of the mounting frame, an anti-theft assembly is mounted in the fireproof shell, and a sealing assembly is mounted on one side of the outer wall of the fireproof shell; the sealing assembly comprises a fireproof frame, and one side of the outer wall of the fireproof frame is fixedly connected to one side of the outer wall of the fireproof shell. According to the fireproof door, the door body is made of high-temperature-resistant materials such as the ceramic fibers, the cold-rolled steel sheets and the aluminum-titanium alloy coatings, so that the fire resistance is greatly improved; the ceramic fibers can isolate flames and heat, delay temperature rise and prevent fire spreading; and the cold-rolled steel sheet and the aluminum-titanium alloy coating enhance the strength and corrosion resistance of the door body, ensure the structural stability, prolong the service life and provide high-quality fireproof protection.

The invention discloses a high-thermal-conductivity carbon black composite material and a preparation method thereof, and relates to the technical field of polymer composites.The high-thermal-conductivity carbon black composite material is prepared from, by weight, 20-40 parts of modified thermal conductive filler, 40-60 parts of matrix resin, 5-10 parts of dynamic flexibilizer, 2-5 parts of weather-proof stabilizer, 0.5-2 parts of curing agent and 15-25 parts of solvent; wherein the modified heat-conducting filler has a three-dimensional hierarchical structure, and is composed of substrate carbon black, a two-dimensional nanosheet heat-conducting bridging layer grown on the surface of the substrate carbon black, and an organic functional grafting layer grafted on the surfaces of the two-dimensional nanosheet heat-conducting bridging layer and the substrate carbon black. The prepared high-thermal-conductivity carbon black composite material is good in mechanical property and high in thermal conductivity.

This utility model relates to the field of casual shoe processing technology, and in particular to a hot-melt device for a casual shoe toe heat fusion machine. It includes a base plate, a lower mold, and an upper mold. The upper end of the outer wall of the base plate is fixedly connected to the lower mold via a bracket. A casual shoe toe pressing and hot-melt structure is provided in the middle of the upper end of the outer wall of the base plate, and a shoe last support structure is provided in the middle of the lower end of the outer wall of the lower mold. This hot-melt device for a casual shoe toe heat fusion machine utilizes the casual shoe toe pressing and hot-melt structure. Two motors start simultaneously, driving a spool to rotate within the housing via bearings. The spool then winds up a cable. During this process, the cable pulls a vertical rod to slide downwards within the lower mold, which in turn moves the upper mold downwards. The motor-driven spool rotates to wind up the cable, causing the mold to adhere to the shoe toe on the lower mold. This avoids the need for manual pressing of the mold to heat-melt the casual shoe toe in existing technologies, thus effectively improving practicality.

This invention relates to the field of coating technology, and more specifically, to an exposed hydrophobic flame-retardant fireproof coating, comprising the following steps: preparation of caffeic acid-intercalated calcium aluminum lanthanum hydrotalcite, preparation of a water-resistant flame-retardant composite, preparation of modified sodium lignosulfonate, and preparation of the exposed hydrophobic flame-retardant fireproof coating. The water-resistant flame-retardant composite effectively utilizes the flame-retardant properties of the caffeic acid-intercalated calcium aluminum lanthanum hydrotalcite. During high-temperature combustion, the caffeic acid-intercalated calcium aluminum lanthanum hydrotalcite forms a dense composite char layer structure, effectively isolating heat and oxygen, thus improving the flame-retardant properties of the fireproof coating. Simultaneously, it also possesses good hydrophobic protective properties, enhancing the hydrophobic properties of the exposed hydrophobic flame-retardant fireproof coating. The modified sodium lignosulfonate effectively improves the UV resistance of the exposed hydrophobic flame-retardant fireproof coating, extending the coating's UV aging resistance life.

This disclosure relates to a liquid sealing system for a roasting machine. The system includes: a sealing groove, a sealing plate, and a sealing plate flipping assembly; the sealing groove is disposed on the side wall of the roasting machine's bellows and / or furnace hood, for holding a sealing liquid; the sealing plate is disposed on the trolley of the roasting machine, for immersing itself in the sealing liquid when the sealing plate enters the sealing groove, thereby sealing the roasting machine's bellows and / or furnace hood; the sealing plate flipping assembly includes an arc-shaped guide rail, for causing the sealing plate to flip and bend along the arc-shaped guide rail when the sealing plate enters or leaves the sealing groove, and for allowing the sealing plate to enter or leave the sealing groove after flipping and bending. The liquid sealing system for a roasting machine according to embodiments of this disclosure can reduce air leakage rate, improve heat utilization efficiency and fan utilization efficiency, and the sealing liquid can be an ordinary liquid, does not need to be magnetic, and the sealing effect is not affected by high temperatures. It can also simplify the construction of the sealing system and the trolley, reducing costs.

The invention belongs to the technical field of functional textiles, and relates to a flame-retardant electric heating fabric as well as a preparation method and application thereof. The preparation method comprises the following steps: placing a flame-retardant fabric in a silane coupling agent solution for modification treatment to obtain a modified flame-retardant fabric; dispersing the carbon material in water, and adding copper salt to prepare a mixed dispersion liquid; repeatedly carrying out dipping treatment on the modified flame-retardant fabric in the mixed dispersion liquid, and then drying until the mixed dispersion liquid is completely treated on the modified flame-retardant fabric, so as to obtain a carbon material / copper ion fabric; and placing the carbon material / copper ion fabric in a solution containing a reducing agent to react, so that the conductive material uniformly coats the fibers to form a continuous and complete conductive network, thereby obtaining the flame-retardant electric heating fabric. The flame-retardant electric heating fabric prepared by the invention has excellent conductivity and flame retardance, and can be applied to flexible outdoor heating devices, medical hot compress supplies and flexible heating devices.

This invention relates to an environmentally friendly PET material and its preparation method, belonging to the field of recycled environmentally friendly materials technology. The PET environmentally friendly material comprises: 12-16 wt% reinforcing filler, 4.2-5.8 wt% toughening agent, 8.2-10.5 wt% flame retardant regenerator, 2.4-3 wt% lubricant, and 0.13-0.17 wt% antioxidant, with the balance being recycled PET. The flame retardant regenerator is modified by replacing butyl glycolate and 7-octenyltrichlorosilane to form a modified carrier with a branched ester structure and alkenyl groups, followed by double bond addition with DOPO to introduce a functional flame-retardant structure. The introduction of the flame retardant regenerator achieves a balance between high-efficiency flame retardancy and toughening of recycled PET. Its environmental friendliness, performance advantages, and low processing cost align with the trends of circular economy and green manufacturing.

The invention relates to flame-retardant and high-temperature-resistant polyvinyl chloride and a preparation method thereof, and belongs to the technical field of polyvinyl chloride. The polyvinyl chloride comprises the following components in parts by weight: 100 parts of polyvinyl chloride resin, 12-25 parts of organic silicon-zinc hybrid flame retardant, 2-8 parts of reactive compatibilizer and 5-15 parts of core-shell functional filler. According to the organic silicon-zinc hybrid flame retardant, acrylic acid and aminopropyltrimethoxysilane are subjected to condensation to generate acrylamide silane, then the acrylamide silane is coordinated with zinc acetate to form a crystal structure, and silicon and zinc synergistic flame retardance is achieved; the core-shell functional filler takes zinc hydroxystannate as a core and zinc borate as a shell, and has smoke suppression and catalytic char formation functions; and the reactive compatibilizer is a copolymer containing an epoxy group, so that the interfacial compatibility of the flame retardant and the filler with PVC is improved, the safety performance of the material is improved, and the material is suitable for manufacturing cable sheaths.