5427 results about "Polycarbonate" patented technology

The invention relates to a process for recovery of rubber-modified vinyl(co)polymer from a polycarbonate resin or an optionally shredded molded part made thereof and the use of the recovered rubber-modified vinyl(co)polymer for the production of molded parts as well as blend partner in polycarbonate blends. Further optional aspects are the recovery of aromatic and / or aliphatic diol and the use of this diol for the production of polycarbonates.

The invention relates to the technical field of polypropylene, and discloses a high-strength polypropylene composite material as well as a preparation method and application thereof in an automobile bumper. The high-strength polypropylene composite material comprises the following components in parts by weight: 70-90 parts of polypropylene resin, 10-30 parts of polycarbonate resin, 25-40 parts of glass fibers, 3-10 parts of an allyl carbonate grafted polypropylene compatilizer and the like. The compatilizer contains carbonate groups similar to polycarbonate, so that the compatibility between polypropylene resin and polycarbonate resin is improved, and the compatilizer has higher mechanical properties. Moreover, the compatilizer contains carboxyl and can form interaction with the surface of the glass fiber, so that the compatibility between the glass fiber and the polypropylene resin is improved, the glass fiber has a better reinforcing effect, the tensile strength, the impact strength and the bending strength of the composite material are remarkably improved, and the compatilizer has good practical application in the aspects of automobile bumpers and the like.

The preparation method comprises the following steps: treating sepiolite serving as a raw material with 3-aminopropyltriethoxysilane to prepare aminated sepiolite, ultrasonically blending the aminated sepiolite and a modified filler, then treating with phytic acid to prepare a flame-retardant filler, melting bisphenol A polycarbonate, blending with the flame-retardant filler, and carrying out extrusion molding to obtain the flame-retardant fireproof plastic. When the flame-retardant fireproof plastic is combusted, the flame-retardant filler is subjected to evaporation of hot water molecules to cause structural expansion and form an isolation layer, meanwhile, evaporation of the water molecules can take away heat, released ammonia gas can reduce the content of smoke so as to achieve the flame-retardant effect, and generated inorganic acid and phosphate ester are dehydrated and carbonized, so that the flame-retardant fireproof plastic has a good flame-retardant effect. The carbon layer with large interlayer spacing is formed through cooperation with the isolation layer, an organic silicon structure is contained, Si-C can be formed, then the density of the carbon layer is increased, aluminum oxide and magnesium oxide can be formed after internal aluminum ions and magnesium ions are combusted at high temperature, then the flame retardance of the carbon layer is improved, and the flame-retardant and fireproof effects of the plastic are improved.

The invention discloses a biodegradable paper-plastic composite material and a preparation method thereof. The biodegradable paper-plastic composite material is prepared from the following components in parts by mass: 70-90 parts of poly (butylene adipate-co-terephthalate), 10-30 parts of carbon dioxide-based polyester-polycarbonate and 0.2-0.5 part of a processing aid. Polybutylene adipate terephthalate (PBAT) not only has better mechanical properties, but also has higher ductility and elongation at break, but has the defects of low modulus, easiness in curl deformation, higher melt viscosity, easiness in adhesion to equipment and poor barrier property. PPCP belongs to an amorphous polymer, is high in tensile strength and excellent in barrier property, but is low in elongation at break (-5%), is a brittle polymer and is poor in melt strength, and the higher the temperature is, the poorer the melt strength is. Therefore, the PPCP is ingeniously used for modifying the PBAT blown film, the obtained film combines the properties of the two plastics, the good ductility and elongation at break are kept, the modulus of the film is also improved, and meanwhile, the melt strength is also easy to process.

RF absorbing structures include a dielectric layer, such as polycarbonate, and one or more layers of a carbon resistive material, such as carbon ink. The RF absorbing structures can further include one or more layers of a conductive material, such as silver ink.

The invention relates to the technical field of flame retardance, and discloses a flame-retardant coating and a preparation method thereof.The flame-retardant coating is obtained by adding phenolic resin, polycarbonate, phosphorus-containing modified phenolic resin, boric acid-containing benzoxazine, an organic silicon resin defoaming agent, a propylene glycol film-forming agent and water into a stirrer and stirring. The flame-retardant coating contains a large amount of anacardol, long chains in the anacardol can also be crosslinked to form a net-shaped structure, a net-shaped carbon skeleton structure is formed under high-temperature carbonization, degradation products are inhibited during combustion, and the flame-retardant coating has good fire resistance; wherein oxazolidinone generated by reaction of an epoxy group of epoxidized phenolic resin and an isocyanate group of hexamethylene diisocyanate is a heterocyclic ring with very high heat resistance and also plays a role in synergistic fire resistance; the flame-retardant coating contains a large amount of phosphorus elements, sulfur elements and nitrogen elements, has a good flame-retardant effect, and achieves a synergistic flame-retardant effect.

The invention discloses a fluoride-free environment-friendly flame-retardant PC (polycarbonate) material and a preparation method thereof. The fluoride-free environment-friendly flame-retardant PC material is prepared from the following raw materials in parts by weight: 68-99.98% of polycarbonate resin; 0.01 to 25% of a flame retardant; 0.01 to 5% of a synergistic flame retardant; and 0-2% of a processing aid. The flame retardant does not contain any flame retardant, does not generate toxic gas or smoke in the combustion process and is harmless to the environment and human bodies, the components of the flame-retardant PC material meet the PFAS environment-friendly requirement, the flame-retardant PC material belongs to an environment-friendly material, and the prepared fluoride-free environment-friendly flame-retardant PC material is applied to the fields of the automobile industry, the electric appliance and instrument industry, the mechanical industry and the like.

The invention belongs to the technical field of polymeric membrane materials, and particularly discloses a polycarbonate / cellulose acetate blended ultrafiltration membrane as well as a preparation method and application thereof. The polycarbonate / cellulose acetate blended ultrafiltration membrane is prepared by blending cellulose acetate and polycarbonate, and has the advantages of simple preparation method, low cost, low energy consumption, good stability and the like; meanwhile, the double advantages of polycarbonate and cellulose acetate are combined, remarkable hydrophilic enhancement and efficient permeability are shown, the purpose of separation and purification can be achieved, and the composite material has huge potential application prospects in the fields of seawater desalination, sewage treatment, rainwater collection and treatment and the like.

The invention discloses a polycarbonate material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials, and the polycarbonate material is prepared from the following raw materials in parts by weight: 40-80 parts of polycarbonate, 20-60 parts of silicon copolymerized polycarbonate, 0.1-0.5 part of a sulfonate flame retardant, 0.1-0.5 part of a compound flame retardant, 0.3-0.8 part of an anti-dripping agent, 0.1-0.4 part of an antioxidant and 0.2-0.8 part of a lubricant. The compound flame retardant is an organic silicon flame retardant with free radicals of nitrogen and oxygen in structure. The material still has better impact resistance in a low-temperature environment of minus 40 DEG C; the compound flame retardant not only has an efficient flame retardant effect, but also has excellent weather resistance; under the action of a sulfonate flame retardant and a compound flame retardant, the flame retardant can meet the flame retardant requirement of 0.5-0.8 mm ultrathin parts, and is especially suitable for the field of electronic and electrical appliances such as middle-and-high-end notebook computers, electronic book shells and the like.

The invention discloses a high dimensional stability glass fiber reinforced halogen-free flame retardant PBT / PC alloy material, and relates to the technical field of PBT / PC alloy preparation, the raw materials comprise the following components by mass: 35-60 parts of PBT, 30-40 parts of PC, 2-10 parts of a modified heat resistant agent, 1-15 parts of an antioxidant, 0.1-6 parts of a heat stabilizer, 0.2-3 parts of a lubricant, 0.2-3 parts of a halogen-free flame retardant, 2-6 parts of mica, and 5-40 parts of glass fiber. The glass fiber reinforced PBT / PC alloy material is processed and prepared according to a set proportion and a set preparation sequence, the PBT / PC material with high dimensional stability is finally obtained, diisocyanate, hydroxyalkyl terminated polydimethylsiloxane and a hexaalkoxy silane coupling agent are compounded according to a certain proportion to prepare a modified heat-resistant agent, and the modified heat-resistant agent is added into the glass fiber reinforced PBT / PC alloy material to prepare the glass fiber reinforced PBT / PC alloy material. According to the PBT / PC alloy material disclosed by the invention, the overall heat resistance of the PBT / PC alloy material is improved while the interfacial compatibility among different materials is improved, and the prepared PBT / PC alloy material has better dimensional stability at different temperatures due to the proportion of PBT and PC and is not easy to change in size.

A polyester polycarbonate polyol having a repeating unit represented by specific formula (1) and a repeating unit represented by specific formula (2), having a hydroxyl value of 35 to 85 mgKOH / g, having a hydroxyl group at a terminal, and being in the form of a liquid at ordinary temperature.

The invention relates to the technical field of films, in particular to a flexible film special for a handwriting board and a preparation method of the flexible film. The flexible film is obtained by coating a release film with coating slurry and carrying out thermocuring, wherein the coating slurry contains modified polyurethane, a flatting agent, a defoaming agent and ethyl acetate. According to the modified polyurethane, polycarbonate diol, isophorone diisocyanate and other raw materials are subjected to a reaction, and a nano particle chain extender containing disulfide bonds is added. The nano particle chain extender containing disulfide bonds is prepared by modifying nano silicon dioxide and grafting cystamine dihydrochloride and diamino polyethylene glycol. Through nanoparticle surface modification and dynamic disulfide bond network construction, molecular-level coupling of a rigid reinforced phase and a flexible substrate, inhibition of nanoparticle aggregation and balance of strength and toughness are realized, the dynamic disulfide bond network can self-repair microcracks, and a high-quality special flexible film solution is provided for a high-performance handwriting board.

The invention discloses a method for recovering bisphenol A and cyclic carbonate by coupling polycarbonate with an epoxy compound, and belongs to the technical field of depolymerization and recovery of high polymer materials. The method comprises the following steps: constructing a reaction system comprising bisphenol A polycarbonate, an epoxy compound, Lewis acid, alkali and ionic liquid; placing the reaction system at the temperature of 70-150 DEG C in an air atmosphere, and carrying out a reaction for more than or equal to 10 min to obtain bisphenol A and cyclic carbonate; wherein the epoxy compound comprises at least one of styrene oxide, 1, 2-epoxypropane, 1, 2-epoxybutane, 1, 2-epoxydodecane, n-butyl glycidyl ether, epoxy propyl phenyl ether, 2-toluene glycidyl ether and 3-(1-naphthyloxy)-1, 2-epoxypropane, and the epoxy compound comprises at least one of styrene oxide, 1, 2-epoxypropane, 1, 2-epoxybutane, 1, 2-epoxydodecane, n-butyl glycidyl ether, epoxy propyl phenyl ether, 2-toluene glycidyl ether and 3-(1-naphthyloxy)-1, 2-epoxypropane; the alkali is inorganic alkali or organic alkali; the method is mild in reaction condition, high in resource utilization efficiency, good in operation safety and high in chemical monomer yield, and has a wide application prospect in the field of waste plastic treatment.

The invention relates to the field of composite materials, in particular to a low-temperature-resistant polycarbonate abrasive material and a preparation method thereof. The low-temperature-resistant polycarbonate abrasive material is prepared from the following raw materials in parts by weight: 75 to 85 parts of polycarbonate, 15 to 20 parts of organic silicon-polycarbonate copolymer, 3 to 6 parts of flexibilizer, 12 to 15 parts of modified wear-resistant glass fiber, 1 to 1.5 parts of coupling agent, 0.3 to 0.5 part of antioxidant and 0.3 to 0.5 part of compatilizer. By optimizing a formula and a process, the low-temperature-resistant polycarbonate abrasive material with excellent mechanical properties, low-temperature-resistant toughness, wear resistance and environmental protection performance is prepared, and the low-temperature-resistant polycarbonate abrasive material has a wide application prospect and an important technical value.

A polyester copolymerized polycarbonate belongs to the technical field of polycarbonate materials, and has the following structure: a molecular chain is a randomly distributed multi-block structure of a polycarbonate segment and a polyester segment, the polycarbonate segment is a polymerized chain segment of an epoxy compound, carbon dioxide and any cyclic anhydride, and the polyester segment comprises one or more of PCL, PGA, PBAT, PHA and PBS. The material integrates the advantages of polycarbonate and various polyesters, the variety and proportion of polyester segments can be adjusted according to different application requirements, performance customization is achieved, and the material has good biocompatibility, degradability, weather resistance and mechanical property.

The invention discloses a preparation method and application of a heat-resistant halogen-free flame-retardant modified polycarbonate film, and belongs to the technical field of polycarbonate films. Comprising the following raw materials in parts by weight: 80-97 parts of a polycarbonate raw material, 0.05-2 parts of a dispersing agent, 0.3-0.6 part of a sulfonate flame retardant, 0.5-2 parts of an organic silicon flame retardant, 0.2-0.5 part of an anti-dripping agent, 0.05-0.2 part of a dispersing agent, 0.1-1 part of a release agent, 0.05-1 part of an antioxidant and 1-4 parts of black masterbatch. Wherein the dispersing agent and the release agent can improve the processing stability and film forming; the antioxidant can play a synergistic role, so that the oxidation resistance of the film is improved; the black master batch ensures that the film product is lightproof; the organic silicon flame retardant can improve the heat resistance and mechanical property of the film, can play a synergistic role with the sulfonate flame retardant and the anti-dripping agent, enhances the flame retardant property of the film, is stable in performance and not prone to falling off, and has application value in the new energy battery and energy storage industry.

The invention belongs to the technical field of high polymer materials, and particularly relates to a high laser transmittance black glass fiber reinforced PBT composite material and a preparation method thereof, the high laser transmittance black glass fiber reinforced PBT composite material comprises, by weight, 35-46 parts of PBT resin, 10-25 parts of polycarbonate, 30 parts of rectangular cross section glass fiber, 0.2-0.6 part of a lubricant, 0.2-0.6 part of an antioxidant, 0.05-0.2 part of a transesterification inhibitor, and 0.1-0.5 part of black powder. The PBT resin, the polycarbonate, the lubricant, the antioxidant, the ester exchange inhibitor and the black powder are added into a high-speed stirrer according to the proportion to be mixed for 1-2 minutes, and a premix is obtained; and adding the premix into a double-screw extruder through a main hopper and a sanitary hopper, adding rectangular cross section glass fibers at a side feeding position, and carrying out melting, pelletizing and extrusion to obtain the black laser welding glass fiber reinforced PBT composite material. The flat glass fiber and the compound black powder are adopted, so that the light transmittance is remarkably improved, and meanwhile, the impact performance is improved through PC.

The present invention relates to a composition containing A) 60 to 93 wt. % of at least one aromatic polycarbonate, polyester carbonate or mixtures thereof, B) 2 to 20 wt. % of a polyester on the basis of an aromatic or cycloaliphatic dicarboxylic acid or mixtures thereof and cyclohexane dimethanol and optionally an additional aliphatic diol, and C) 1 to 20 wt. % of at least one phosphorus-containing flame retardant. The invention also relates to a component that contains the composition and to the use of components B and C in the indicated quantities in order to improve CTI and flame retardancy of polycarbonate compositions.

The invention discloses a continuous production process of a CO2-based multipolymer, and belongs to the technical field of polycarbonate synthesis. The technological process comprises the following steps: firstly, preparing an auxiliary agent, a solid-state monomer, a liquid-state reaction monomer and any solvent into a mixed solution in a premixer (1); continuously feeding carbon dioxide and the mixed solution into a multi-stage continuous reactor for mixing and heating to initiate a reaction, wherein the total reaction residence time of the materials in the multi-stage continuous reactor is controlled to be 10 minutes to 5 hours; and after the reaction is completed, carrying out post-treatment to complete the continuous production of the CO2-based multipolymer. The process particularly optimizes the effective continuous polymerization of high-molecular and high-viscosity materials of the CO2-based multipolymer. Through accurate control of the multi-stage tubular reactor, appropriate reaction viscosity is realized, further reaction uniformity of materials in the screw extrusion reactor is ensured, and reaction efficiency is improved.

A polyurethane resin composition containing an isocyanate-terminated urethane prepolymer (E) or a reaction product of an isocyanate-terminated urethane prepolymer (E) and a chain extender (G), and a neutralizing agent (F), wherein the isocyanate-terminated urethane prepolymer (E) includes a reaction product of: a polyol (A1) including a polycarbonate polyol (B1) having an ester bond and an average hydroxyl group functionality of more than 2; an organic acid (C); and a polyisocyanate (D), and wherein the content of the polycarbonate polyol (B1) or the content of urea groups derived from the chain extender (G) satisfies a specific condition.

The invention relates to a multi-layer body, comprising (I) a carrier layer made of a special thermoplastic polycarbonate molding compound and (II) a metal layer which has one or more recesses. The invention also relates to a lighting or display unit, comprising the multi-layer body and a light source, to a method for producing the multi-layer body, and to the use of the special thermoplastic polycarbonate molding compound as a carrier layer of such a multi-layer body.

The invention provides impact-resistant high-toughness plastic as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by weight: 35-45 parts of hydroxyl-terminated hyperbranched polycarbonate, 15-25 parts of LDPE (Low-Density Polyethylene) resin, 8-12 parts of inorganic filler, 4-6 parts of isocyano ethyl methacrylate, 1-3 parts of bis (1-vinyl imidazole-2-) ketone, 1-3 parts of bis (trimethylsilylated) vinyl phosphate, 1-3 parts of 1, 3, 5-triglycidyl-S-triazinetrione, 1-3 parts of 3, 3 '-diamino-4, 4'-diphenyl-1, 3, 4-triazole-2-ketone, 1-3 parts of 1, 3, 5-triazole-2-ketone, 1-3 parts of 1, 3 '-trimethylsilylated vinyl phosphate, 1-3 parts of 2, 3'-diphenyl-1, 3, 4, 5- The material is prepared from the following components in parts by weight: 1-3 parts of 4, 4 '-difluorodiphenyl sulfone, 2-4 parts of a coupling agent, 0.5-1.5 parts of an antioxidant, 0.8-1.2 parts of a compatilizer, 0.7-1 part of a catalyst and 0.8-1 part of an initiator. The plastic has the advantages of favorable mechanical properties, favorable heat aging resistance, favorable impact toughness, favorable flame retardancy and favorable environmental friendliness.

The invention discloses a flame-retardant impact-resistant composite acrylic plate and a preparation method thereof, belongs to the technical field of acrylic plate processing, and aims to solve the technical problem that the flame retardance and impact resistance of an acrylic plate in the prior art need to be further improved. The acrylic plate comprises the following raw materials in parts by weight: 80-100 parts of flame-retardant modified PMMA, 40-60 parts of polycarbonate, 25-35 parts of a modified toughening agent and 10-15 parts of an auxiliary additive, and is prepared by the following steps: putting the flame-retardant modified PMMA, the polycarbonate, the modified toughening agent and the auxiliary additive into a twin-screw extruder, carrying out melt extrusion, pouring into a mold, and carrying out post-treatment to obtain the acrylic plate. The flame retardant property and the impact resistance of the acrylic plate are improved, and the mechanical property of the acrylic plate is also improved.

The invention discloses a gasket structure capable of eliminating real-shot stray light, which comprises the following steps of: S1, designing a chamfering structure, namely, accurately setting the thickness of an ultra-thin gasket to be 0.022 / 0.033 mm, manufacturing the chamfering structure in an inner hole, and performing rigorous optical simulation and experimental optimization; s2, material selection and surface treatment are coordinated, material screening focuses on the characteristics of low reflectivity and high optical stability, and optical-grade polycarbonate has good optical transparency, low refractive index and excellent mechanical performance. The light propagation path is changed through unique design, and the influence of stray light on imaging is reduced to the maximum extent. By effectively eliminating the stray light, the image contrast of the imaging system is improved, the definition is obviously improved, more image details can be clearly presented, and the application scene requirement harsh for the imaging quality is met. The reduction of stray light interference helps to reduce the noise level of an optical system, improves the stability and reliability of the system, reduces the equipment fault and maintenance frequency caused by the stray light problem, and reduces the use cost.

The invention discloses a graphene antistatic PC composite material and a preparation method thereof, and belongs to the technical field of composite materials. 150-160 parts of polycarbonate resin, 10-20 parts of modified graphene, 2-5 parts of light stabilizer, 2-5 parts of ultraviolet absorber, and 2-5 parts of lubricant are weighed by weight and added to a high-speed mixer, and sent into a twin-screw extruder after mixing evenly, and after melt extrusion, cooled and pelletized to obtain a graphene antistatic PC composite material. The modified graphene contains graphene, quaternary ammonium salt structure and hindered phenol structure, and the modified graphene contains lipophilic benzene ring and long carbon chain, so the modified graphene has good compatibility with the polycarbonate resin containing benzene ring and other raw materials, and the modified graphene can be evenly dispersed in the composite material, and is not easy to agglomerate, so that the modified graphene can fully play a role, giving the composite material excellent antistatic, antibacterial and anti-aging properties.

The present invention relates to a method for producing a piece of reinforced laminated glass (1) comprising: a piece of curved glass (1a), which has a first surface (2), a second surface (3) and an edge (4); at least one polycarbonate sheet (5); and at least one adhesive film (6), wherein the method comprises the following steps: subjecting the at least one polycarbonate sheet (5) to a shaping process such that it adopts the curvature of the curved glass (1a); forming an assembly (10) by placing the at least one adhesive film (6) between one of the surfaces (2, 3) of the curved glass (1a) and the at least one polycarbonate sheet (5) and, where appropriate, between contiguous polycarbonate sheets (5); subjecting the assembly (10) to a prelamination process and to a lamination process such that at least one of the surfaces (2, 3) of the curved glass (1a) is joined to one or more polycarbonate sheets (5), the sheets being joined together.

The invention discloses a preparation method and application of a composite catalyst for preparing carbon dioxide-based polycarbonate, and belongs to the technical field of catalysts, and the composite catalyst is a binary catalytic system obtained by combining double metal cyanide and activated zinc carboxylate according to a certain proportion. After zinc carboxylate is activated by water or ethanol, the catalytic activity is greatly improved. The activity of the composite catalyst for catalyzing ring-opening copolymerization of carbon dioxide and epoxypropane is greater than 1500g polymer / g catalyst, the number-average molecular weight of the obtained product polycarbonate is greater than 150,000, and the selectivity is greater than 98%. Compared with single use of double metal cyanide or zinc carboxylate, the composite catalyst has remarkable advantages, and is simple in synthesis process, relatively low in cost and very suitable for industrial production of carbon dioxide-based polycarbonate.

The invention is suitable for the technical field of chemical industry, and provides a method for preparing polycarbonate diol by using a titanate catalyst, which comprises the following steps: step 1, transesterification: mixing dimethyl carbonate and 1, 6-hexanediol according to a molar ratio of 1.1-1.5: 1, adding isopropyl titanate which accounts for 0.01-2% of the total raw material amount as a catalyst, and reacting at the temperature of 50-60 DEG C for 1-3 hours; carrying out transesterification on the mixture; step 2, carrying out condensation polymerization to obtain a polycarbonate diol crude product; and step 3, carrying out reduced pressure purification, and removing the small molecular polymer and the residual titanium isopropoxide catalyst to obtain the high-purity polycarbonate diol. According to the present invention, the efficient titanium isopropoxide catalyst is used under the normal pressure, such that the preparation of the high-purity and narrow-molecular-weight-distribution polycarbonate diol is achieved, the operation condition is mild, the production efficiency is high, the cost is low, and the catalyst has characteristics of low boiling point, easy removal and environmental protection.

The invention discloses a preparation method of a graphene oxide sodium alginate composite membrane for extracting ocean osmotic energy. The preparation method specifically comprises the following steps: step 1, preparing a sodium alginate solution; step 2, preparing a graphene oxide solution; 3, putting the sodium alginate solution into the graphene oxide solution, and carrying out electromagnetic stirring to obtain a mixed dispersion liquid; step 4, taking a polycarbonate film, taking the polycarbonate film as a substrate, putting the polycarbonate film into a trace suction flask, taking the mixed dispersion liquid, and performing vacuum suction filtration on the mixed dispersion liquid in the trace suction flask to obtain a polycarbonate film covered with a graphene oxide sodium alginate composite film; step 5, stripping the polycarbonate film covered with the graphene oxide and sodium alginate composite film, and naturally drying to obtain the graphene oxide and sodium alginate composite film for extracting the ocean osmotic energy. The invention further discloses the graphene oxide and sodium alginate composite membrane for extracting the ocean osmotic energy. The prepared composite membrane has the advantages of being high in power density, good in stability and high in economic value.

The invention provides a preparation method of a sintered anode foil, the sintered anode foil and an aluminum electrolytic capacitor, and the preparation method comprises the following steps: (1) mixing a dispersant and a binder, fully dissolving, adding aluminum powder, and uniformly dispersing to obtain slurry; the binder comprises at least one of aliphatic polycarbonates shown in the following general formula I: # imgabs0 #, m is an integer from 1 to 10, and n is an integer from 100 to 2000; (2) respectively coating two sides of a base material foil with the slurry, and drying to obtain a coated foil; (3) sintering the coated foil to obtain a sintered foil; and (4) forming the sintered foil to obtain the sintered anode foil. According to the preparation method disclosed by the invention, the aliphatic polycarbonate as shown in the general formula I is used as a binder, has a relatively good dispersion effect on micron-sized aluminum powder, and is easier to remove in a sintering stage, so that the sintered anode foil with low carbon residue and leakage current is prepared, and the preparation energy consumption is reduced.