1350 results about "Soybean oil" patented technology

The invention relates to the technical field of high polymer material preparation, and discloses a bamboo fiber graft modified full-biodegradable composite membrane material preparation process which comprises the following steps: firstly, performing hot mixing and cooling on dried bamboo fiber powder, anhydrous citric acid, choline chloride, activated zinc oxide and pentaerythritol to prepare a bamboo fiber modified premix; then mixing the biodegradable polyester resin with the premix; adding the mixture into an extruder, injecting epoxidized soybean oil into a barrel through a liquid metering device, and performing melt extrusion granulation under a vacuum exhaust condition; and finally carrying out blow molding to form the film. Through in-situ reaction extrusion of multi-component synergism, surface grafting of bamboo fibers, chain extension of a polyester matrix and interface chemical bonding of the bamboo fibers and the polyester matrix are achieved, interface compatibility is effectively improved, degradation of the material in the processing process is inhibited, and the mechanical property and thermal stability of the composite film material are remarkably improved; the process is efficient and environment-friendly, and the cost is controllable.

The invention discloses a high-cold-resistance environment-friendly PVC decorative material and application thereof, belongs to the technical field of PVC preparation, and is used for solving the technical problem that the low temperature resistance and the environmental protection property of a PVC material in the prior art need to be further improved. The high-cold-resistance environment-friendly PVC decorative material specifically comprises the following raw materials in parts by weight: 80-100 parts of composite PVC, 8-10 parts of a bio-based plasticizer and 6-10 parts of an auxiliary additive; the preparation method comprises the following steps: modifying montmorillonite by using a silane coupling agent, loading magnesium hydroxide to prepare a composite filler, carrying out ring-opening polymerization, amine end capping and oxidation on cyclotrisiloxane to generate a low-temperature-resistant agent containing an epoxy group, introducing trimethoxysilane into PVC through sulfydryl substitution, carrying out hydrolytic condensation to form a Si-O-Si cross-linked network, and covalently binding the Si-O-Si cross-linked network with the filler and the low-temperature-resistant agent to obtain the low-temperature-resistant PVC composite material. And reacting the epoxidized soybean oil with glycine, and carrying out calcium coordination to generate a bio-based plasticizer, thereby finally preparing the PVC decorative material.

The invention relates to the technical field of plant breeding, in particular to a molecular marker related to oil content and protein content of soybean and application of the molecular marker. The molecular marker is constructed on the basis of SNP sites; based on a genome version number Wm82. A2. V1, the SNP site is located at the 8605814th site of the No.8 chromosome of the soybean, and the polymorphism is A / G. The application comprises the following steps: (1) predicting or detecting the oil content or protein content of soybeans; (2) identifying or cultivating soybean varieties with high oil content or protein content; (3) soybean molecular marker assisted breeding; (4) soybean variety improvement related to oil content or protein content; and (5) soybean germplasm resource improvement. The molecular marker related to the soybean oil content and the protein content is obtained through research and screening, and the molecular marker can be applied to cultivation of soybean varieties with high oil content and high protein content and has important value in the field of soybean breeding.

The invention relates to a high-thermal-conductivity epoxy resin conductive adhesive containing a composite conductive filler and a preparation method of the high-thermal-conductivity epoxy resin conductive adhesive. The high-thermal-conductivity epoxy resin conductive adhesive containing the composite conductive filler comprises 6-16% of graphene oxide modified epoxy resin, 0.6-3% of a curing agent, 0-1% of a curing accelerator, 2-7% of epoxidized soybean oil modified single-layer / multi-layer carbon nanotubes, 3-7% of carbon fibers, 3-7% of nano silver powder, 40-70% of micron silver powder, 5.0-15.0% of a surface treating agent, 0.3-2.7% of a coupling agent, 0.5-1.5% of a dispersing agent, 0.1-0.3% of an antioxidant and 0.1-0.3% of a lubricant. 0.5% and the balance of a solvent. The graphene oxide modified epoxy resin and the epoxidized soybean oil modified single-layer / multi-layer carbon nanotubes are utilized to improve the dispersion stability of the filler, the modified single-layer / multi-layer carbon nanotubes are adopted as a short-range conductive additive, the carbon fibers are adopted as a long-range conductive additive, and the graphene oxide modified epoxy resin and the epoxidized soybean oil modified single-layer / multi-layer carbon nanotubes and the carbon fibers cooperate to improve the conductivity. The conductive adhesive disclosed by the invention is high in heat conductivity, low in volume resistivity and high in tensile strength and bending strength, and has a wide application prospect in the fields of automotive electronics, wind power photovoltaics, LEDs (Light Emitting Diode), LCDs (Liquid Crystal Display) and the like.

The invention belongs to the technical field of functional Pickering emulsion preparation, and particularly discloses a silk fibroin nanoparticle-stabilized biphase drug-loaded Pickering emulsion and an antibacterial application thereof. The curcumin-loaded silk fibroin nanoparticles Cur-SFNPs with uniform form and size are prepared by using an anti-solvent precipitation method. In order to improve the antibacterial effect of the Pickering emulsion, the Cur-SFNPs is utilized to stabilize the soybean oil loaded with resveratrol, and the oil-in-water type Pickering emulsion is prepared. The Pickering emulsion prepared by taking Cur-SFNPs as a stabilizer has the characteristics of small particle size, uniform distribution, storage stability, heating stability, freeze-thaw stability, food safety and environmental friendliness. And as a two-phase drug-loaded emulsion, two natural hydrophobic active drugs are loaded at the same time, so that the solubility and bioavailability of the emulsion can be enhanced, the loaded active substances play a synergistic antibacterial and antioxidant role, and the emulsion can be applied to food preservation.

The invention discloses a sheath material for a saline-alkaline-resistant dragging cable, a preparation method of the sheath material, the cable and the sheath material. The sheath material is prepared from the following raw materials in parts by weight: 40 to 45 parts of chlorinated polyethylene, 1.5 to 2.0 parts of dicumyl peroxide vulcanizing agent, 2 to 2.5 parts of triisocyanate vulcanizing agent, 0.1 to 0.3 part of ethylene thiourea accelerant, 0.05 to 0.15 part of anti-aging agent RD, 4 to 5 parts of metal oxide, 1 to 1.5 parts of paraffin, 8 to 10 parts of calcium carbonate, 15 to 21 parts of reinforcing agent, 1 to 1.5 parts of lead stearate, 0.5 to 1 part of lead sulfate tribasic, 1 to 1.5 parts of ultraviolet light absorber, 3 to 5 parts of epoxidized soybean oil and 8 to 8 parts of chlorinated paraffin. 9 parts of antimony trioxide and 3-4 parts of antimony trioxide. The cable has the advantages of ultraviolet resistance, no salt deposition, water resistance, tensile resistance, cold resistance and the like, can be used for a long time in a special operating environment, has the service life of at least more than 3 years, and avoids frequent replacement of the cable by a user.

The invention is applicable to the technical field of daily cleaning chemicals, and provides a double-shell probiotic microcapsule which comprises probiotics, a fat-soluble plant extract, cellulose nanocrystals, a polyacrylic acid-chitosan compound, a surfactant, diisocyanate, polyethylene glycol and ethyl acetate. A wall material of the microcapsule is formed by compounding a polyacrylic acid-chitosan compound and a fat-soluble plant extract, the particle size D50 is smaller than or equal to 5 microns, the microcapsule is stable in an environment with the pH being 8-10, and the microcapsule is broken to release probiotics when the pH is smaller than or equal to 6. The outer layer is polyacrylic acid / chitosan compound / polyurethane crosslinking (pH response), the inner layer is coconut oil and soybean oil (fat-soluble core), meanwhile, the material preparation process is simple, the controllable degree is high, and the material is suitable for batch preparation.

The invention relates to the technical field of polyurethane, in particular to a bio-based polyurethane buffer material. The material is prepared by foaming and curing a bio-based polyurethane prepolymer. The bio-based polyurethane prepolymer is prepared by the following steps: modifying attapulgite with branched polyol containing quaternary ammonium salt and polytetrahydrofuran ether glycol, and then reacting with raw materials such as soybean oil-based polyol, polytetrahydrofuran ether glycol, isophorone diisocyanate and the like. The bio-based polyurethane buffer material provided by the invention has high compression strength and compression modulus, the hysteresis loss rate is lower than 20%, the elastic recovery rate is higher than 99%, and the bio-based polyurethane buffer material shows excellent rebound resilience and energy absorption capacity, and has excellent adaptability and durability in the fields of high rebound resilience and lightweight design.

The invention relates to the technical field of feed formulas, and particularly discloses a natural mixed feed additive and a preparation method thereof. The natural mixed feed additive comprises the following raw materials in parts by mass: 4-7 parts of vitamin E, 5-15 parts of beta-carotene, 10-16 parts of soybean oil, 20-35 parts of deionized water, 5-8 parts of modified probiotic microcapsules and 1-5 parts of an emulsifier, wherein the modified probiotic microcapsules contain sodium alginate-pectin composite microencapsulated probiotics; the preparation method comprises the following steps: heating 10-16 parts of soybean oil to 35-45 DEG C, then adding 4-7 parts of vitamin E and 5-15 parts of beta-carotene, and stirring; adding 1-5 parts of an emulsifier into 20-35 parts of deionized water, heating to 45-55 DEG C, stirring, and then slowly adding into the mixed solution obtained in the step S1; 5-8 parts of modified probiotic microcapsules are added, and stirring is conducted for 8-12 min under the condition of 100-200 r / min. The natural mixed feed additive disclosed by the invention has the advantage that the defect that the feed additive still has defects in the aspect of reducing intestinal diseases of animals can be overcome.

The invention discloses a KASP molecular marker for identifying the soybean oil content and application, and relates to the technical field of biology and application of an SNP locus, the SNP locus takes a soybean Wm82. A2. V1 genome sequence as a reference genome, the SNP is the 6562032th SNP on a soybean 20 # chromosome, and the SNP is the 6562032th SNP on the soybean 20 # chromosome. Corresponding to the 20th basic group from the 5'terminal of the sequence shown in SEQ ID NO: 1, when the site is GG homozygosis, the corresponding genotype is A; when the site is AA homozygous, the corresponding genotype is B; according to the application, soybeans with different oil contents are screened or screened in an auxiliary mode, and the different oil contents of the soybeans are as follows: the soybean with the homozygous genotype A is higher than the soybean with the homozygous genotype B or the soybean with the homozygous genotype B in a candidate mode. The invention has important theoretical significance and economic value for molecular marker-assisted selection of soybean germplasm or breeding progeny materials with high oil content.

The invention belongs to the technical field of high polymer materials, and particularly relates to bio-based light-cured polyurethane acrylate resin as well as a preparation method and application thereof. The preparation method of the bio-based light-cured polyurethane acrylate resin comprises the following steps: (1) mixing a catalyst, a first polymerization inhibitor, first hydroxyl acrylate and itaconic acid, stirring and reacting at 90-120 DEG C for 6-9 hours to obtain a reaction product, then adding epoxidized soybean oil, and stirring at 90-120 DEG C for 3-5 hours to obtain a prepolymer; and (2) cooling the prepolymer obtained in the step (1) to room temperature, dropwise adding second acrylic hydroxyl ester and diisocyanate, and then stirring and reacting at 30-60 DEG C for 1.5-4 hours until an NCO infrared peak value disappears, thereby obtaining the polyurethane acrylate. The resin is high in bio-based content, moderate in viscosity, good in flexibility, high in hardness, strong in adhesive force, high in glossiness, small in smell and good in storage stability, and is suitable for being applied to preparation of UV curing coatings, UV curing printing ink, UV curing adhesives, 3D printing materials and nail polish glue.

The invention discloses a moxidectin pouring solution and a preparation method thereof, and belongs to the technical field of veterinary drug preparations. Every 500 ml of the moxidectin pouring solution comprises 0.1%-10% of moxidectin, an antioxidant, a penetrating agent, a tackifier, a cosolvent, a coloring agent and the balance of a fat solvent, and preferably, soybean oil is used as the fat solvent. The preparation method comprises the following steps: mixing and dissolving the components according to a specific sequence, filtering and sub-packaging. The moxidectin pouring solution disclosed by the invention has the advantages of low cost, convenience in preparation, good quality stability, no influence on impurity detection and the like, effectively solves a plurality of problems of the moxidectin pouring solution in the prior art, and has a good application prospect.

The invention discloses an HPVC power cable protection pipe and a preparation method thereof, and relates to the technical field of cable protection pipes. The HPVC power cable protection tube is at least prepared from the following raw materials in parts by weight: 100 parts of high-strength polyvinyl chloride, 35 to 45 parts of epoxy acrylate rubber, 5 to 8 parts of vinyl chloride-g-acrylate copolymer, 8 to 12 parts of epoxidized soybean oil, 3 to 5 parts of calcium-zinc composite stabilizer, 5 to 15 parts of modified hydrotalcite, 0.1 to 0.5 part of beta-diketone, 0.8 to 1.5 parts of calcium stearate and 10 to 20 parts of flame retardant. 12 to 15 parts of modified nano calcium carbonate, 5 to 8 parts of talcum powder, 0.6 to 1.2 parts of antioxidant, 1 to 2 parts of anti-aging agent 4010 and 0.5 to 1.5 parts of ultraviolet light absorber UV531; the modified hydrotalcite is obtained by adding a mixed solution of calcium nitrate and lanthanum nitrate, a sodium hydroxide solution and a sodium bicarbonate solution into a lauryl sodium sulfate solution, mixing and aging, and then carrying out a post-treatment process. The HPVC power cable protection tube prepared by the invention has relatively high strength, good mechanical properties, weather resistance and cold resistance, and long service life.

The invention belongs to the technical field of coatings, and particularly relates to an epoxy heavy-duty coating as well as a preparation method and application thereof. The coating comprises a component A and a component B, the component A comprises epoxy resin, a reactive diluent, a reactive flexibilizer and an auxiliary agent; the component B comprises epoxidized soybean oil, alicyclic amine and organic phenol; the reactive flexibilizer contains an epoxy group. The epoxy curing agent with good flexibility and corrosion resistance can be obtained by carrying out graft modification on alicyclic amine by adopting the epoxidized soybean oil, and then the epoxy curing agent reacts with the epoxy resin and the reactive toughening agent at the same time for curing, so that the epoxy coating is modified by the epoxidized soybean oil. And the reaction type flexibilizer and the epoxidized soybean oil with the flexible long chain participate in the reaction, so that the flexibility of the coating is improved while the chemical resistance and the mechanical property of the coating are not reduced, the brittle failure of the coating in the use process is better avoided, and the anti-corrosion life of the coating is prolonged.

The invention relates to the technical field of pipes, and discloses an environment-friendly high-strength corrosion-resistant PE pipe production process which comprises the following steps: raw material pretreatment: mixing high-density polyethylene, low-density polyethylene, borate, polyvinylidene fluoride, epoxidized soybean oil and an antioxidant in proportion, and performing melting pretreatment to form a uniform mixture; dynamic cross-linking extrusion molding: carrying out dynamic cross-linking extrusion on the pretreated mixture in a three-zone temperature control extruder, wherein three zones are respectively a dynamic bond activation zone, a chain orientation induction zone and a dynamic locking zone; and carrying out on-line molecular chain orientation stretching: heating the extruded semi-cured pipe, and carrying out one-way or two-way stretching under a constant-temperature condition. Through a dynamic boron-oxygen cross-linked network extrusion process, an on-line molecular chain orientation stretching technology, a partitioned cooling process and a synergistic effect of a polyvinylidene fluoride thin layer coated on the surface, high strength, toughness and balanced inner and outer layer performance of the pipe are effectively realized.

The invention relates to the field of building waterproof materials, and discloses a composition for a modified asphalt coating material, the modified asphalt coating material, a preparation method and application of the modified asphalt coating material, an energy-saving waterproof coiled material and application of the energy-saving waterproof coiled material. The composition contains a main agent and an auxiliary agent, wherein the main agent comprises matrix asphalt, epoxidized soybean oil, star-shaped SBS, a thermoplastic polyurethane elastomer, butadiene styrene rubber, hydrogenated butadiene-acrylonitrile rubber and a first component; on the basis of the total weight of the composition, the content of the matrix asphalt is 40-55 wt%, the content of the epoxidized soybean oil is 5-10 wt%, the content of the star-shaped SBS is 3-5 wt%, the content of the thermoplastic polyurethane elastomer is 1-8 wt%, the content of the styrene butadiene rubber is 1-5 wt%, the content of the hydrogenated butadiene-acrylonitrile rubber is 5-10 wt%, and the content of the plasticizer is 1-5 wt%. And the content of the first component is 1-2wt%. The modified asphalt waterproof coiled material provided by the invention has the advantages of strong adhesion, good stretchability and weather resistance and the like.

The invention discloses environmentally degradable plastic as well as a preparation method and application thereof, and belongs to the technical field of degradable plastic. The degradable modified plastic is prepared from the following raw materials: polylactic acid, poly (butylene terephthalate)-adipate, modified thermoplastic starch, modified cellulose, poly (butylene succinate), epoxidized soybean oil, polyvinyl alcohol, glycerol monolaurate and ethylenediaminetetraacetic acid. Wherein the modified thermoplastic starch is obtained by thermoplastic modification of starch through a plasticizer and modification of castor oil and toluene diisocynate; the modified cellulose is obtained by modifying cellulose acetate with chitosan. By regulating and controlling the types and proportions of the raw materials for preparing the plastic, the plastic with excellent degradation performance and mechanical performance can be obtained, the shopping bag is prepared from the plastic, the loading capacity can be remarkably improved, the plastic is easily degraded by microorganisms in the environment after being discarded, and environmental pollution is avoided.

The invention discloses a cold-resistant and anti-freezing cable and a preparation method thereof, and relates to the technical field of cables. The cold-resistant and anti-freezing cable sequentially comprises a sheath layer, an insulating layer and a conductive core layer from outside to inside, the sheath layer is prepared from a sheath material, and the sheath material comprises polyvinyl chloride resin, dioctyl terephthalate, modified polyurethane, epoxidized soybean oil, aluminum hydroxide, magnesium hydroxide, a calcium-zinc stabilizer and modified halloysite. The sheath material prepared by the invention has good mechanical properties, antibacterial properties and anti-aging properties, and is suitable for cold-resistant and anti-freezing cables.

The invention discloses a molecular marker for identifying or assisting in identifying soybean oil content and application, and relates to the technical field of biology and application of an SNP (Single Nucleotide Polymorphism) locus, the SNP locus takes a soybean Wm82. A2. V1 genome sequence as a reference genome, the SNP is the 41859817th SNP on a soybean chromosome 5, and the SNP is the 41859817th SNP on the soybean chromosome 5. Corresponding to the 20th basic group from the 5'terminal of the sequence shown in SEQ ID NO: 1, when the site is TT homozygosis, the corresponding genotype is A; when the site is GG homozygous, the corresponding genotype is B; according to the application, soybeans with different oil contents are screened or screened in an auxiliary mode, and the different oil contents of the soybeans are as follows: the soybean with the homozygous genotype A is higher than the soybean with the homozygous genotype B or the soybean with the homozygous genotype B in a candidate mode. The invention has important theoretical significance and economic value for molecular marker-assisted selection of soybean germplasm or breeding progeny materials with high oil content.

The invention discloses a full-biodegradable material based on bamboo fibers and a preparation method of the full-biodegradable material, and belongs to the technical field of composite materials. The preparation method comprises the following steps: firstly, mixing epoxidized soybean oil and kaolin, and performing ultrasonic treatment to obtain a dispersed material; secondly, crushing and dehydrating bamboo fibers, adding the bamboo fibers into an aqueous solution of an ammonium fluoride compound and imidazolium salt, mixing, heating, refluxing, filtering, collecting insoluble substances, washing and drying to obtain modified bamboo fibers; and finally, mixing the modified bamboo fiber, the dispersed material, polylactic acid, calcium carbonate, ethylene bis-stearamide, glycerol triacetate and sorbitol, putting the mixture into a double-screw extruder, controlling the temperature and extrusion process parameters, and cooling and shaping by a vacuum mold to obtain the full-biodegradable material. Compared with the prior art, the material disclosed by the invention can be quickly decomposed under a composting condition, so that the influence on the environment is reduced, meanwhile, the surface characteristics of the material are optimized, and the application range of the material is expanded.

The invention belongs to the technical field of biodegradable high polymer materials, and particularly discloses a PLA / PPC degradable spinning material and a preparation method thereof. The PLA / PPC degradable spinning material is prepared from the following raw materials in parts by weight: 65 to 75 parts of terminated polypropylene carbonate, 15 to 20 parts of polylactic acid, 1 to 2 parts of epoxidized soybean oil, 7 to 10 parts of composite Na-montmorillonite, 3 to 5 parts of light calcium carbonate, 6 to 9 parts of rice straw fiber, 0.6 to 0.8 part of cross-linking agent, 0.2 to 0.5 part of antioxidant, 1 to 2 parts of maleic anhydride grafted PLA compatilizer, 0.07 to 0.01 part of catalyst and 0.3 to 0.5 part of silicone. Various raw materials are mixed, so that the mechanical property of the material is remarkably improved, the material has good strength and toughness, and the comprehensive performance of the material is improved.

The invention relates to the technical field of wires and cables, and particularly discloses a mining extrusion-resistant wear-resistant cable with a tensile enhancement layer and a preparation method thereof. The invention relates to a mining extrusion-resistant wear-resistant cable with a tensile enhancement layer. The mining extrusion-resistant wear-resistant cable comprises a wire core conductor, an insulating layer, an inner sheath, the tensile enhancement layer and an outer sheath from inside to outside, the outer sheath and the inner sheath are made of the same raw material; the inner sheath comprises the following raw materials: high-density polyethylene, epoxidized soybean oil, a compound lubricant, a compound wear-resistant filler, a flame retardant, an antioxidant and an ultraviolet light absorber; the compound lubricant is a compound of calcium stearate and oxidized polyethlene wax; the compound wear-resistant filler is a compound of nano polytetrafluoroethylene and silicon carbide. According to the extrusion-resistant and wear-resistant cable for the mine, the tensile strength and the elongation at break can reach 24.9 MPa and 450% to the maximum extent, the wear resistance is 96 mm < 3 > to the minimum extent, and the wear resistance and the pressure resistance of the extrusion-resistant and wear-resistant cable for the mine are improved.

The invention relates to a preparation method of soybean oil base polyhydric alcohol, in particular to a method for preparing soybean oil base polyhydric alcohol by directly using soybean oil. The soybean oil diluted by using a solvent reacts with hydrogen peroxide with the weight percentage being 30% for 2-5 hours at the temperature of 60-70 DEG C under catalysis of a catalyst with the weight percentage being 3-5%; vacuum distillation is conducted after the reaction is ended, and the solvent is evaporated; then low alcohol is added in a reactor to be subjected to a reaction for 4-6 hours under the pressure of 0.3-0.4 MPa and at the temperature of 70-80 DEG C, then the reaction is stopped, and the soybean oil base polyhydric alcohol is obtained. The method saves the using amount of hydrogen peroxide, reduces the post-treatment steps, and simplifies the production procedures, and accordingly the product cost is declined directly.

The invention provides an environment-friendly heat-resistant photovoltaic cable and a preparation method thereof. The environment-friendly heat-resistant photovoltaic cable comprises a conductor, an insulating layer and a sheath layer, the insulating layer is prepared from the following component raw materials: 20 to 30 percent of polylactic acid, 10 to 20 percent of polyhydroxyalkanoate, 25 to 35 percent of halogen-free flame-retardant crosslinked polyethylene, 5 to 15 percent of phosphate esterified lignin microspheres, 3 to 8 percent of quaternary ammonium salt chitosan nanofiber, 1 to 3 percent of modified graphene, 2 to 6 percent of epoxidized soybean oil, 1 to 5 percent of modified montmorillonite and 0.5 to 1.5 percent of nano silicon dioxide aerogel. The invention discloses an anti-aging agent which is prepared from the following components in percentage by weight: 2-4% of sodium alginate microcapsules, 0.5-1.5% of polydimethylsiloxane, 0.1-0.8% of a silane coupling agent and 0.1-0.8% of a plant polyphenol antioxidant. The sheath layer comprises the following raw material components: 45-55% of halogen-free flame-retardant crosslinked polyethylene, 10-20% of lignin-based carbon nanotubes, 5-15% of sulfonated chitosan / sodium alginate microspheres, 1-6% of graphene, 5-15% of epoxidized soybean oil, 2-8% of nano silicon dioxide, 1-3% of polydimethylsiloxane, 1-3% of peppermint oil microcapsules, 1-3% of a silane coupling agent and 0.1-0.8% of an antioxidant. And 0.1-0.8% of an ultraviolet light absorber. The photovoltaic cable disclosed by the invention has the advantages of flame retardance and difficulty in generating drippings after combustion.

The invention discloses a bamboo powder reinforced and replaced biodegradable plastic and a preparation method thereof, and belongs to the technical field of biodegradable plastics. Comprising the following raw materials in parts by weight: 10-20 parts of modified bamboo powder, 45-55 parts of PBAT resin, 30-40 parts of polylactic acid, 3-5 parts of modified humic acid filler, 5-8 parts of epoxidized soybean oil, 0.3-0.5 part of an antioxidant, 0.3-0.6 part of a light stabilizer, 4-6 parts of a compatilizer and 0.3-0.5 part of an epoxy chain extender. According to the bamboo powder reinforced and replaced biodegradable plastic and the preparation method thereof, the modified bamboo powder and the humic acid filler are compounded with the PBAT, the polylactic acid and other raw materials, so that the cost is reduced and the environmental protection property is improved by utilizing the bamboo powder, the humic acid and other renewable resources, and the compatibility with a matrix is enhanced through modification; the antioxidant, the light stabilizer and the like are matched, so that the mechanical property is improved, and multiple advantages of low cost, high performance and degradability are realized.

The invention discloses a high-strength, low-temperature-resistant and aging-resistant polymer rubber material and a preparation method thereof in the technical field of rubber materials. The high-strength, low-temperature-resistant and aging-resistant polymer rubber material comprises the following components in parts by weight: 100-120 parts of a rubber matrix, 44-62.5 parts of an interface auxiliary agent, 8-15 parts of a vulcanization system, 4-5 parts of a protection system and 8-12 parts of a toughening agent. According to the invention, a multi-component synergistic system is constructed by the multifunctional reinforcer, amino-terminated polysiloxane, amino-terminated polybutadiene and epoxidized soybean oil, and meanwhile, a carbon black / Si-69 interface assistant and a protection / vulcanization system are optimized, so that the synergistic improvement of mechanical properties, low temperature resistance and aging resistance is achieved; the technical problems that traditional rubber is single, excellent in performance and unbalanced in comprehensive performance are solved.

The invention discloses a calcium-zinc stabilizer for PVC and a preparation method and application thereof, and relates to the technical field of calcium-zinc stabilizers. The calcium-zinc stabilizer for PVC comprises calcium-zinc composite soap, modified attapulgite, a beta-diketone stabilizer, graphene oxide, an antioxidant, a lubricant and a chelating agent, the calcium-zinc composite soap is formed by compounding calcium stearate, zinc stearate, epoxy soybean calcium oleate and epoxy soybean zinc oleate; the modified attapulgite is prepared by the following steps: dispersing pretreated attapulgite in an ethanol solution of a silane coupling agent, stirring, washing and drying; dispersing in a metal salt solution of titanium and zinc, stirring, centrifugally washing and calcining; by adding the modified attapulgite, the strength of the PVC is improved, titanium / zinc ions distributed in porous gaps in the attapulgite can play a role in capturing free radicals in the PVC and are not easy to separate out to influence the performance of the PVC, and the thermal stability of the PVC is remarkably improved when the titanium / zinc ions are matched with the calcium-zinc composite soap for use.

The invention discloses a cable insulation material preparation method, which comprises: S1, pre-mixing modified nanoparticles and epoxidized soybean oil to form a mixture; s2, 30 to 50 parts of mixed resin, 15 to 20 parts of a mixture, 0.1 to 0.4 part of an antioxidant, 0.2 to 0.6 part of a cross-linking agent and 1 to 2 parts of a toughening agent are weighed; s3, respectively adding the mixed resin, the mixture, the antioxidant, the cross-linking agent and the flexibilizer into a double-screw extruder, and carrying out partitioned temperature control to obtain a molten resin matrix. The invention belongs to the technical field of cable insulation material preparation, and aims to solve the problems that in the prior art, the intermolecular toughness is relatively small, so that the cable insulation material becomes more brittle, and the cable insulation material is easy to crack during bending. The cable insulation material has the technical effects that the intermolecular toughness of the cable insulation material can be remarkably improved, and then the problems that the brittleness is increased and the cable insulation material is easy to crack when being bent due to large internal stress generated in the cable insulation material can be effectively avoided.

The invention belongs to the technical field of electronic sealants, and relates to preparation of a lipoic acid modified epoxy resin-based sealant and a circuit board sealing and unsealing process method thereof. The preparation method comprises the following steps: mixing epoxidized soybean oil and a lipoic acid monomer, stirring and reacting at 50-90 DEG C for 20-40 minutes to prepare a precursor, pouring the precursor into a mold, and curing at 50 DEG C for 8 hours to obtain the sealant. And sealing the circuit board by using the precursor, keeping at 50 DEG C for 8 hours, and finally soaking the sealed circuit board in absolute ethyl alcohol at 50 DEG C for 72 hours to realize unsealing. The method adopts a solvent-free method, and is simple in process, low in cost and environment-friendly. The prepared sealant can adhere to various base materials, is stable in air and underwater and has excellent transparency, weather resistance and detachability, a new thought is provided for design and preparation of the bio-based electronic sealant, and meanwhile, the epoxidized soybean oil can be replaced to construct various functional sealants.

The invention relates to the technical field of cables, in particular to a flame-retardant crosslinked polyethylene cable sheath material and a preparation method thereof. The sheath material is composed of low-density polyethylene, a modified magnesium hydroxide flame retardant, an ethylene-vinyl acetate copolymer, a vulcanizing agent and an auxiliary agent, wherein the modified magnesium hydroxide flame retardant is prepared through a three-step modification process: firstly, sorbitol and epoxidized soybean oil are synthesized into polyhydric alcohol, and then the polyhydric alcohol reacts with branched polyethyleneimine to form a modified adhesive; finally, magnesium hydroxide modification is realized through in-situ synthesis. A three-dimensional network structure of branched polyethyleneimine is creatively adopted to enhance the interfacial compatibility, so that the flame retardant is uniformly dispersed in a matrix, and the flame retardance is improved by forming a stable carbonized layer. The product has excellent flame retardance, mechanical property and processability, is halogen-free and environment-friendly, and meets the technical requirements of high-end cable sheath materials.