17results about How to "Promote carbonization" patented technology

The invention discloses a method for preparing a sodium-ion battery hard carbon negative electrode material by modifying industrial waste activated carbon. Industrial waste activated carbon is used as a raw material, a high-molecular polymer is used as a modifier, water or an organic solvent is used as a solvent, and the sodium-ion battery hard carbon negative electrode material is obtained through process treatment of firstly mixing, then carrying out medium-low temperature pretreatment and finally carrying out high-temperature carbonization. The method disclosed by the invention is simple and environment-friendly in process, waste utilization of the waste activated carbon generated in the field of waste gas treatment in the electronic industry, the shoemaking industry or the printing industry can be realized, and the prepared hard carbon has the characteristics of high yield, good electrochemical performance and low cost.

The invention relates to the technical field of building materials, in particular to magnesium oxide carbonized foundation solidified soil and a preparation method and application thereof.Soil is adopted as filler, active magnesium oxide is adopted as a cementing material, and meanwhile microorganisms capable of generating carbonic anhydrase are added, so that the carbon sequestration capacity is improved; and a self-developed reinforcing agent is added to reinforce the solidified soil, so that the carbon dioxide absorption amount is synergistically improved, and the prepared solidified soil is high in mechanical property and carbon sequestration capacity and can be used as a foundation raw material for construction.

The invention discloses a brominated flame-retardant polyamide composition capable of improving air trapping. The brominated flame-retardant polyamide composition comprises the following components in percentage by mass: 30.0-80.0 wt% of aliphatic polyamide; 10 to 30.0 wt% of a brominated flame retardant; 3.0 to 10.0 wt% of a flame retardant synergist; 0.3 to 5.0 wt% of aromatic zinc carboxylate; or also comprises the following components: 5.0-50.0 wt% of a reinforcing agent; the sum of all the components is 100 wt%, and the composite material is prepared by melt blending and processing through a single-screw or double-screw extruder. According to the brominated flame-retardant polyamide composition disclosed by the invention, the defect that the fire resistance of a thermoplastic composition is influenced by an acid remover and zinc oxide is avoided by utilizing the aromatic zinc carboxylate, the air trapping phenomenon can be obviously improved, and the brominated flame-retardant polyamide composition has stable flame retardance and excellent mechanical property.

The invention discloses a flame-retardant and wear-resistant low-smoke halogen-free material and a preparation method thereof, and belongs to the technical field of polyacrylate processing.The preparation method comprises the following steps that cured polyacrylate, flame-retardant capsules and auxiliary materials are added into a double-screw extruder to be subjected to melt extrusion, and the flame-retardant and wear-resistant material is obtained; the flame-retardant capsule is prepared and cross-linked with a modified polyacrylate chain segment, so that the wear resistance of the material is remarkably enhanced, the material structure damage is repaired at room temperature, the shell layer is decomposed to release water at high temperature, and the shell layer and a core layer monomer are synergistically matched to form a flame-retardant layer; the prepared flame-retardant curing agent reacts with a flame-retardant polyacrylate chain segment to form a five-membered ring structure to enhance the wear resistance of the material, and the flame-retardant structure cooperates with flame-retardant groups on a flame-retardant capsule, a five-membered ring and an organic chain segment to enhance the flame retardance of the material.

The invention discloses a system and a method for accelerating carbonization or mineralization of a cement base material through energization, the system utilizes a carbon dioxide pressure detector to reflect a carbon dioxide pressure value in real time, and the carbon dioxide concentration is supplemented and adjusted in time by controlling the opening and closing states of a valve, so that the stability of the required carbonate ion concentration during the operation of the device and the system is maintained; therefore, the CO2 concentration and pressure in the whole device can be controlled; according to the system, carbonate ions are directionally migrated by utilizing an electromigration method, quickly enter a cement-based test piece and chemically react with alkaline components such as calcium hydroxide and hydrated calcium silicate in the test piece to generate a compact substance, so that carbonization is accelerated. According to the system, carbonate ions are migrated into a test piece with a certain water content and can directly react with alkaline components such as calcium hydroxide and hydrated calcium silicate, no special requirements on various test conditions exist, and the whole operation process is simpler and more convenient.

The application relates to a preparation and application of a molybdenum and indium co-modified cobalt-based catalyst for carbon dioxide hydrogenation synthesis of low-carbon alcohol, belonging to the field of catalysis. Co is used as an active component, In and Mo components are introduced, an alkali metal K additive is introduced, an In and Mo co-modified Co-based oxide precursor is created by adopting a sol-gel method, the precursor is reduced by hydrogen, and is further activated by CO2+H2, so that the In and Mo co-modified Co2C catalyst is obtained; the catalyst is used in a reaction of carbon dioxide hydrogenation for preparing low-carbon alcohol, under the condition that the reaction temperature is 340 DEG C and the reaction pressure is 3 MPa, the carbon dioxide conversion rate is more than 35%, and the low-carbon alcohol selectivity is close to 20%.

The invention discloses a wear-resistant tensile composite material for rubber gloves and a preparation method thereof, and belongs to the technical field of new materials, the wear-resistant tensile composite material comprises the following raw materials by weight: 80-100 parts of modified rubber, 10-15 parts of a filler, 3-5 parts of a plasticizer, 1-2 parts of an antioxidant, 2-3 parts of a heat stabilizer, 2-3 parts of a lubricant and 5-8 parts of a vulcanizing agent; the prepared expanded particles serve as polymerization base points of modified polyborosilicate rubber, promote fracture of disulfide bonds in modified ternary rubber and serve as radiation absorption centers to promote crosslinking of the expanded particles and the modified ternary rubber, the mechanical performance of the material is improved, a glassy protective layer is generated by a silicon-boron structure of the expanded particles in the combustion process and covers the surface of the material, and the service life of the material is prolonged. And carbonization of organic matters is promoted, so that the material forms a heat-insulating carbon layer, and the flame retardant property of the material is improved.

This invention discloses a porous carbon-supported copper catalyst, its preparation method, and its application, belonging to the field of catalyst preparation technology. The invention uses three-dimensional interconnected ordered porous carbon (NCP) with a large-pore structure as a support, tetraphenylporphyrin copper(II) and tetraphenylporphyrin as nitrogen and copper sources, and KOH or NaOH as activators. An NCP precursor adsorbed with tetraphenylporphyrin copper(II), tetraphenylporphyrin, and an alkaline component is obtained through a two-step adsorption process. This precursor is then pyrolyzed at 600-900℃ under nitrogen protection, cooled to room temperature, and washed with water to obtain the porous carbon-supported copper catalyst (NCP@NC-Cu). This catalyst retains a three-dimensional interconnected porous structure, with the active component (copper species) mainly distributed within the pores of the NCP support, and possesses a large specific surface area and abundant nitrogen. The catalyst was applied to the N-formylation reaction of amines with CO2 and H2 to prepare formamide compounds, exhibiting excellent catalytic activity, recyclability, and good substrate versatility, showing promising application prospects.

The invention relates to the technical field of fabrics, in particular to an aerogel chemical fiber cotton fabric production process which comprises the following steps: (1) washing and drying a chemical fiber cotton fabric, and then performing normal-pressure dielectric barrier discharge plasma modification treatment to obtain a modified chemical fiber cotton fabric; (2) adding water into the nano silicon dioxide aerogel powder, stirring and performing ultrasonic treatment while adding water to obtain a nano silicon dioxide aerogel aqueous solution, and continuously adding waterborne polyurethane glue and a coupling agent while stirring and performing ultrasonic treatment to obtain nano silicon dioxide aerogel finishing glue; (3) immersing the modified chemical fiber cotton fabric into the nano silicon dioxide aerogel finishing glue, and rolling and drying to obtain the aerogel chemical fiber cotton fabric. A layer of aerogel covering body is formed on the fiber surface of the chemical fiber cotton fabric, so that the chemical fiber cotton fabric with multiple effects of heat preservation, flame retardance and hydrophobicity is obtained.

The invention is applicable to the technical field of adhesives for artificial boards, and provides a formaldehyde-free flame-retardant adhesive, a preparation method thereof and application of the formaldehyde-free flame-retardant adhesive in the artificial boards. According to the formaldehyde-free flame-retardant adhesive, formaldehyde-free and non-toxic PEI and phytic acid are used as raw materials, the formaldehyde-free adhesive is prepared through precise regulation and control of the proportion, multiple bonding effects between PEI and phytic acid and cross-linking modification of a cross-linking agent, and the formaldehyde-free flame-retardant adhesive not only can endow an artificial board with good mechanical properties, but also can endow the artificial board with an excellent flame-retardant effect; according to the present invention, the added value is improved, the purpose of dual purposes with one agent is achieved, the adhesive is expected to replace the traditional trialdehyde adhesive, has good wood bonding strength, can replace the traditional urea-formaldehyde resin adhesive, and has characteristics of no toxicity, no formaldehyde and good environmental protection. The prepared adhesive can be used for preparing environment-friendly and flame-retardant artificial boards, and the added value and the application field of the environment-friendly and flame-retardant artificial boards are improved.

The utility model provides a cable head insulation paste reinforcement type cable, which relates to the technical field of power construction, and comprises a main body shell and a waterproof and fireproof mechanism, a connecting sheet is arranged on the outer side of the main body shell, the waterproof and fireproof mechanism is arranged on one side of the connecting sheet, and the cable is placed in the main body shell through the arrangement of the waterproof and fireproof mechanism. Then the two connecting pieces are attached to each other, the bolts are screwed into the connecting pieces, the bolts are tightly fixed to the connecting pieces through the nuts, the sealing layers are tightly attached to form a closed space, moisture is prevented from permeating along gaps of the shell, and the cable fireproof wrapping tape can serve as a physical barrier; according to the fireproof cable, the contact between the cable and external or internal flames is isolated, the development speed of fire behavior is delayed, the fireproof blanket is not easy to burn in the flames or is quickly carbonized after burning to form a heat-insulating carbonized layer, the cable is maintained to continue working within a certain time as much as possible, and personnel evacuation and emergency rescue in an emergency are facilitated.

This invention belongs to the field of fire-resistant composite material preparation technology, and provides a nano-aerogel ceramicized silicone rubber composite material, its preparation method, and fire-resistant cables. A silicon carbide layer is deposited on the surface of nano-silica aerogel using atomic layer deposition technology, enhancing the mechanical stability and high-temperature oxidation resistance of the aerogel. A silane coupling agent is used to chemically modify the aerogel surface, improving its interfacial compatibility. An Al-doped ceramicized precursor is prepared by reacting polynitrosilane with various functional silanes and metal compounds, enabling the material to form a dense ceramic protective layer at high temperatures. A phosphorus-containing silicon polymer is synthesized with DOPO as the core, further enhancing the flame-retardant properties of the material. By introducing the modified aerogel, Al-doped ceramicized precursor, and phosphorus-silicon polymer into phenyl silicone rubber and methylphenyl silicone resin, followed by vulcanization and ceramicization, a nano-aerogel / ceramized silicone rubber composite material is obtained for application in the field of fire-resistant cables.

The invention discloses a wear-resistant and high-temperature-resistant composite polypropylene material for automobile decoration and a preparation method thereof, belongs to the technical field of high polymer materials, and aims to solve the technical problem that the wear resistance and flame retardance of a polypropylene material in the prior art need to be further improved. The modified polypropylene material comprises the following raw materials in parts by weight: 80-100 parts of modified polypropylene, 15-20 parts of a flame-retardant nucleating agent, 3-5 parts of an antioxidant, 3-5 parts of a heat stabilizer and 2-5 parts of a light stabilizer, according to the invention, the prepared modified carbon spheres are used as a filling material and also used as a polymerization center to participate in the preparation of a modified polypropylene matrix, the anti-ultraviolet and wear-resistant modified polypropylene material is prepared by selecting monomers, and the flame-retardant cross-linking agent is prepared in the melt extrusion process of the composite polypropylene material, so that the flame-retardant performance of the composite polypropylene material is improved. The composite polypropylene material with beta crystal form arrangement is generated.

The invention relates to a preparation method of a porous vermicular CoO-PS composite material, the vermicular CoO-PS composite material prepared by the method and application of the vermicular CoO-PS composite material. The method comprises the following steps: adding an acetic acid solution of a metal compound into a halogenated hydrocarbon solution of polystyrene, heating to 50-80 DEG C, uniformly stirring to obtain a mixed liquid, and keeping the temperature for a period of time; and cooling the mixed liquid to normal temperature, and carbonizing the precipitate obtained by filtering at high temperature to obtain the porous wormlike CoO-PS composite material. The method is simple in process step, mild in reaction condition and low in material consumption and energy consumption, and the prepared porous wormlike CoO-PS composite material is large in specific surface area and high in adsorption capacity and can be used as an adsorption material or a photocatalytic material.

The invention discloses a low-density flame-retardant PP mesh cable filling rope, and belongs to the technical field of filling rope processing. The technical problem that in the prior art, the flame retardant property of a PP net-shaped cable filling rope and the utilization rate of a foaming agent potassium bicarbonate need to be further improved is solved. The preparation method comprises the following steps: preparing modified polypropylene resin of which the side chain has a char-forming dehydration group, siloxane and a foaming agent, and preparing a foaming nucleating agent which takes amidated graphene oxide as a substrate material and is internally filled with mixed powder modified by an aluminate coupling agent in an intercalation manner, the foaming nucleating agent promotes heterogeneous nucleation of the modified polypropylene resin and releases gas at the same time, so that the density of the modified polypropylene resin material is reduced, the mechanical property of the modified polypropylene resin material is enhanced, and in the combustion process, the foaming nucleating agent is matched with functional groups of side chains of the modified polypropylene resin to improve the flame retardant property of the modified polypropylene resin material; finally, the wear-resistant, low-density, high-temperature-resistant and flame-retardant net-shaped PP filling rope is prepared.

The invention discloses a hexagonal boron nitride-guanazole-sodium hexametaphosphate flame-retardant resin coating which is prepared by the following steps: by taking BNGS, combined urea and formaldehyde as main raw materials, taking dioctyl phthalate (DOP) as a plasticizer and taking tannic acid (TA) as a curing agent, carrying out three-stage reaction to prepare UF-BNGS; the BNGS is prepared from the following raw materials: hexagonal boron nitride (BN), 3, 5-diamino-1, 2, 4-triazole (GZ) and sodium hexametaphosphate (SHMP) which are taken as bio-based flame-retardant components; the temperature is 228.9 + / -1.1 DEG C when the UF-BNGS decomposition mass is 5%, the temperature is 301.47 + / -1.5 DEG C when the UF-BNGS decomposition mass reaches the maximum decomposition rate, and the carbon residue amount is 39.95 + / -0.5 wt.% at the temperature of 800 DEG C; and a compact carbon residue layer can be formed. The preparation method comprises the following steps: 1, preparing the BNGS flame retardant; 2, preparing a modified urea-formaldehyde resin emulsion UF; when being used as a wood flame-retardant coating, the flame-retardant coating has a flame-retardant property, and a continuous compact carbon residue layer is formed; a UL-94V-0 grade test is passed; and the heat release rate HRR is 55.73 + / -1.25 kW / m < 2 >.

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.