426 results about "Poly(butylene succinate)" patented technology

A biodegradable polymer composite, a method of making the same and use for same are provided. The biodegradable polymer composite has about 30 to 99.5% by weight of a polymer selected from a group consisting of polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), and polycaprolactone (PCL) grafted with a compatibilizer selected from a group consisting of maleic anhydride, glycidyl methacrylate, pyromellitic anhydride, acrylic acid, polyacrylic acid, methylene diphenyl diisocyanate, poly(glycidyl methacrylate, copolymer(s) of glycidyl methacrylate; and about 0.5 to 50 % by weight a nano-filler or a micro-filler. The biodegradable polymer composite does not contain polylactic acid. Surfaces of the nano-filler or the micro-filler may be modified using a grafting agent so that the biodegradable polymer composite has enhanced mechanical properties, increased heat resistance, compostablity and / or improved processability. The biodegradable polymer composite may be used to make flexible articles, such as a freezer wrap and a farming sheet.

The invention aims to solve the manufacturing problem of a biodegradable air-conditioning film, and discloses a biodegradable air-conditioning film with a multilayer structure, the biodegradable air-conditioning film comprises a first surface layer, a middle layer and a second surface layer, the air-conditioning film is sequentially formed by the first surface layer, the middle layer and the second surface layer through a co-extrusion process, and the first surface layer and the second surface layer are prepared from polylactic acid (PLA), polycaprolactone (PCL), polylactic acid (PLA), polycaprolactone (PCL) and polylactic acid (PLA). The biodegradable plastic polyester is one or more of poly (butylene terephthalate) or butylene adipate (PBAT), poly (butylene succinate) (PBS) and polyhydroxyalkanoate (PHA), the functional master batch is used as an auxiliary material (the addition amount is greater than or equal to 1%), and a small amount of auxiliary agent (the addition amount is less than 1%) is added; the middle layer takes polycarbon dioxide (PPC) as a main material, takes functional master batch as an auxiliary material (the addition amount is greater than or equal to 1%), and is added with a small amount of auxiliaries (the addition amount is less than 1%). The composite film is produced through a three-layer film co-extrusion process, meanwhile, a co-blowing process can be carried out, in-mold compounding and out-mold compounding can be carried out, and operation is more convenient.

The invention discloses a degradable bamboo fiber express packaging bag and a preparation method thereof, and belongs to the technical field of express packaging. The packaging bag is prepared from, by mass, 32-42 parts of pretreated bamboo fibers, 22-28 parts of poly (butylene succinate), 9-14 parts of modified nano calcium carbonate, 12-16 parts of polycaprolactone, 6-11 parts of acetylated chitosan and the like, and the key raw materials are all treated through an exclusive pretreatment or modification process. The preparation method comprises the steps of raw material plasma activation, segmented high-speed mixing, vacuum drying, precise-parameter twin-screw extrusion granulation, secondary drying, precise film blowing, high-precision heat-sealing bag making and the like, and the technological parameters of all the steps are clear. The product disclosed by the invention can be efficiently degraded in a natural environment, has excellent tensile resistance, puncture resistance and impact resistance, is stable and controllable in processing process, and is adaptive to actual requirements of express packaging and industrial batch production.

The invention discloses an anti-shrinkage light, soft and elastic sole foaming material and a preparation method thereof, and belongs to the technical field of footwear products. The light, soft and elastic sole foaming material is formed by chemically foaming an EVA (Ethylene Vinyl Acetate) composite raw material, the EVA composite raw material is prepared from 50 to 70 parts of EVA, 20 to 40 parts of olefin thermoplastic elastomer, 10 to 20 parts of styrene elastomer, 1.5 to 3 parts of maleic anhydride grafted ethylene-octylene copolymer compatilizer, 0.4 to 0.8 part of peroxide cross-linking agent, 3 to 4 parts of foaming agent, 1 to 1.5 parts of zinc oxide, 1 to 1.5 parts of polyethylene wax substance and 0.5 to 1.5 parts of poly (butylene succinate). 0.3 to 1 part of polyamide 12 microspheres and 2 to 3 parts of nano montmorillonite. The foaming material can resist shrinkage when being used as a shoe sole part, and has good rebound performance and the like, so that the high-quality requirement of sneakers, the mass production stability and the like are met.

The invention belongs to the technical field of environment-friendly materials, and mainly relates to a high-strength express bag which comprises a polylactic acid material, a poly (butylene succinate) material, a fiber material and an additive, the mass percent of the polylactic acid material is X, and the unit is%; the mass percentage of the poly (butylene succinate) material is Y, and the unit is%; wherein X + Y = 70; considering that an existing degradable express bag does not have relatively high tensile strength, by adjusting the ratio of the polylactic acid material to the poly (butylene succinate) material, the performance of the express bag in the aspects of tensile strength, tear resistance, thickness, degradation time and the like is optimized, and the optimal effect is achieved; in addition, the precise proportion of natural fibers and specific additives is also fused, so that the comprehensive performance of the express bag is further improved; furthermore, the invention further discloses a preparation method of the high-strength express bag, and the performance of the express bag is further improved.

The invention relates to the technical field of biodegradable materials, and particularly discloses a BBM-added bamboo powder biodegradable material and application thereof in beer bottles. The BBM-added bamboo powder biodegradable material is prepared from the following raw materials in parts by mass: 10 to 20 parts of poly (butylene succinate), 10 to 30 parts of poly (butylene adipate-co-terephthalate), 10 to 20 parts of bamboo powder, 1 to 3 parts of dopamine hydrochloride, 0.1 to 0.5 part of n-butylamine, 1 to 2 parts of hexadecyl trimethyl ammonium bromide, 1 to 5 parts of tetraethyl orthosilicate and 1 to 2 parts of tetrabutyl titanate. 1-2 parts of 3-aminopropyltriethoxysilane, 1-2 parts of an antioxidant and 1-2 parts of a plasticizer. The BBM obtained by the invention has excellent mechanical properties, improves the anti-ultraviolet intensity of a degradable material to a certain extent, and has very good biodegradability.

The invention relates to the field of new materials, and discloses a method for preparing a composite material by filling PLA / PBS with fibers, and the composite material comprises the following raw materials by weight: 30-40 parts of polylactic acid, 10-20 parts of poly (butylene succinate), 40-50 parts of fibers, and 1-3 parts of maleic anhydride grafted polylactic acid. Comprising the following steps: S1, performing gradient modification on fibers: S101, pretreating the fibers by using a compound enzyme; s102, in a polylactic acid melt blending stage, adding maleic anhydride to carry out in-situ grafting compatibilization; s2, low-temperature high-shear dispersion: mixing the fibers modified in the step S1 with polylactic acid, poly (butylene succinate) and maleic anhydride grafted polylactic acid. Through a fiber gradient modification technology, bio-enzyme pretreatment and maleic anhydride in-situ grafting compatibilization are utilized, and an interpenetrating network structure of a polylactic acid chain segment is formed on the fiber surface, so that the tensile strength of the composite material is effectively improved to 80-90 MPa.

The invention discloses a high-barrier antibacterial packaging material, a preparation method thereof and a packaging bag, and belongs to the technical field of packaging, the packaging material comprises the following raw materials by weight: 75-85 parts of polylactic acid, 15-25 parts of poly (butylene succinate), 2-6 parts of epoxidized urushiol, and 1-3 parts of benzyl quaternary ammonium salt modified montmorillonite; the epoxidized urushiol is prepared by carrying out epoxidation reaction on urushiol and organic peroxy acid; the packaging material further comprises the following raw materials: 2-5 parts of sepiolite fiber loaded magnesium oxide; according to the invention, biodegradable polylactic acid and poly (butylene succinate) are taken as base materials, and epoxidized urushiol is taken as a reactive compatilizer, so that the compatibility between polylactic acid and poly (butylene succinate) is improved, and meanwhile, the binding property between a polymer matrix and benzyl quaternary ammonium salt modified montmorillonite and sepiolite loaded magnesium oxide is enhanced; the packaging material with good mechanical property, barrier property and antibacterial property is obtained.

The invention discloses a device for treating black and odorous water in a constructed wetland in the field of sewage treatment, comprising: a fuel cell assembly comprising a reaction container, a cathode zone, an anode zone and a buffer zone from top to bottom in the reaction container, the cathode zone comprising a catalytic filler, the anode zone comprising an oxidation filler, and the buffer zone comprising a buffer filler; the oxidation filler is a composite material; the water passing assembly is communicated with the anode area and is used for slowly introducing black and odorous water into the anode area, and a plurality of horizontal water outlet pipes are vertically arranged on the reaction container at intervals; the current collection assembly is electrically connected with the anode region and the cathode region; the invention further discloses a manufacturing method. The fuel cell has the beneficial effects that the composite material prepared from the poly (butylene succinate), the manganese oxide and the manganese dioxide is used as the anode filler of the fuel cell, so that the formation of black and odorous substances can be reduced, and the treatment effect of the fuel cell on a black and odorous water body is improved.

The biodegradable PBAT / bamboo charcoal master batch is prepared from the following raw materials in parts by mass: 100 parts of poly (butylene adipate-co-terephthalate) (PBAT), 20 to 30 parts of poly (butylene succinate), 10 to 30 parts of modified bamboo charcoal powder and 0.2 to 0.4 part of chain extender, the modified bamboo charcoal powder is obtained by sequentially carrying out persulfate treatment, microwave-assisted reaction and grafting agent modification on bamboo charcoal powder, and the grafting agent comprises polybasic acid and an epoxy compound. The bamboo charcoal powder is subjected to grafting modification, so that the interfacial compatibility with the PBAT base material and the matrix dispersity are remarkably improved, and the mechanical property of the composite material is improved. The modifier compounded according to a specific ratio improves the damp-heat aging resistance of the master batch composite material.

The present disclosure relates to a biodegradable multilayer film comprising stacked on each other in the following order: a) a first outer layer comprising a first polymer selected from the group consisting of poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), poly (butylene succinate-co-adipate) (PBSA), and mixtures thereof; b) a core layer comprising a blend of thermoplastic starch (TPS) and polybutylene adipate terephthalate (PBAT); c) a second outer layer comprising a second polymer selected from the group consisting of poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), poly (butylene succinate-co-adipate) (PBSA), and mixtures thereof. The present disclosure also relates to a disposable bag, a bioreactor and a container suitable for mixing, packaging, storing or transporting biopharmaceutical substances, wherein the disposable bag, bioreactor and container comprise the biodegradable multilayer film.

The invention relates to the technical field of 3D printing materials, and discloses a full-degradable bamboo-based composite material for 3D printing and a preparation method of the full-degradable bamboo-based composite material for 3D printing. 30%-50% of a bio-based thermoplastic material; the bio-based thermoplastic material is selected from at least one of polyhydroxyalkanoate (PHA), poly (butylene succinate) (PBS) or thermoplastic starch (TPS); 5%-10% of an interface modifier; the interface modifier is a compound of chitosan and citric acid, and the mass ratio of the chitosan to the citric acid is (1: 1)-(2: 1); 0.5%-2% of a functional auxiliary agent; the functional auxiliary agent comprises but is not limited to a natural antioxidant, a bio-based plasticizer and a halogen-free flame retardant. The bamboo fiber powder and the full-degradable bio-based material (PHA / PBS / TPS) are compounded according to a specific proportion, and the chitosan-citric acid composite interface modifier is combined, so that the interface bonding force is remarkably improved. Natural functional auxiliaries are added, and the requirements for oxidation resistance, plasticizing flowability and flame retardance are synchronously met.

The invention discloses a poly (butylene succinate) composite fiber and a preparation method thereof. The preparation method comprises the following steps: 1) dissolving the photochromic dye, the antioxidant A and the ultraviolet light absorber in an oil-soluble solvent to obtain an oil-phase solution; 2) adding the oil phase solution into an aqueous solution containing an emulsifier, and emulsifying to obtain an oil-in-water emulsion; adjusting the pH value of the emulsion to 3-8 and the temperature to 20-100 DEG C; (3) adding a capsule wall material and a magnetic substance into water, adding the mixture into the emulsion at a constant speed, putting the mixture into an external magnetic field with controllable strength, and keeping the temperature at 20-90 DEG C for 0.3-5 hours to obtain the photochromic microcapsule with a shell with a special structure; and 4) adding the photochromic microcapsule into a spinning solution of the poly (butylene succinate) fiber, and then spinning to obtain the poly (butylene succinate) composite fiber.

The invention relates to the field of textile materials, and discloses a multi-thread elastic knitted fabric and a preparation method thereof.The multi-thread elastic knitted fabric is prepared from, by weight, 30 parts of ternary polymerization elastic fibers; 70 parts of modified bamboo fiber; the ternary copolymerized elastic fiber is prepared from the following raw material components in parts by weight: 28-32 parts of polylactic acid; 38 to 42 parts of polytrimethylene terephthalate; 28 to 32 parts of poly (butylene succinate); 1 to 3 parts of graphene nanosheets; 0.5 to 1.5 parts of epoxidized soybean oil; 2 to 4 parts of beta-cyclodextrin; the modified bamboo fibers are subjected to enzymatic treatment, silane coupling agent modification, dopamine coating treatment and ultrasonic treatment. Through micro gradient structure design and multi-step functionalization treatment of the ternary polymerization elastic fibers and the modified bamboo fibers, unification of excellent elastic recovery, comfort, multifunctionality and durability is achieved.

The invention relates to the technical field of plugging materials, and provides a low-temperature temporary plugging agent for fracturing and a preparation method thereof. The low-temperature temporary plugging agent for fracturing is prepared from the following raw material components: polycaprolactone, polylactic acid, polyglycolic acid, poly (butylene succinate), triglycidyl isocyanurate and silicon dioxide. The silicon dioxide comprises silicon dioxide A and silicon dioxide B; the silicon dioxide A is nano silicon dioxide; the silicon dioxide B is nano silicon dioxide composite micron silicon dioxide. Through the technical scheme, the problem of low strength of the low-temperature temporary plugging agent in related technologies is solved.

The invention relates to an ultrahigh down-proof down jacket fabric and a preparation process thereof.The preparation process includes the steps that silk fibers, spinning auxiliaries and modified SiO2 precursor sol are evenly mixed in proportion to obtain spinnable sol, the spinnable sol is prepared into a modified SiO2 nanofiber membrane through an electrostatic spinning technology, and after the modified SiO2 nanofiber membrane is dried, an aerogel elastic membrane is obtained; the fabric is attached to base cloth, and the ultrahigh down-proof down jacket fabric is prepared; wherein the spinning auxiliary agent is at least one of a polyvinyl acetal solution and a poly (butylene succinate) solution. The prepared ultrahigh down-proof down jacket fabric has high air permeability and high down-proof performance, and is good in toughness, good in elasticity and washable, so that the high air permeability and the high down-proof performance of the fabric can be kept for a longer time.

The invention discloses a preparation method of a battery diaphragm with a thermal runaway prevention function. The preparation method comprises the following steps: dissolving an ethylene-vinyl acetate copolymer and poly (butylene succinate) in an organic solvent to serve as a fiber shell precursor solution; polyvinylidene fluoride is dissolved in an organic solvent to serve as a fiber inner core precursor solution; respectively pumping the inner core precursor solution and the outer shell precursor solution into an inner injector and an outer injector for electrostatic spinning; and drying after spinning to obtain the battery diaphragm with the thermal runaway prevention function. By constructing the spinning fiber shell with the gradient melting point, the diaphragm is partially closed at the shutdown temperature of 120 DEG C or below, and the high-temperature performance of the battery is reserved to the maximum extent; when the shutdown temperature is reached, the hole is quickly and completely closed to block reaction, thermal runaway is prevented in time, and the high-temperature performance of the battery is furthest reserved.

The invention relates to the technical field of high polymer materials, and discloses a preparation method of a modified master batch degradable material and application of the modified master batch degradable material in a packaging lunch box, and the modified master batch degradable material comprises the following components by mass: 75.0-93.8 parts of poly (butylene succinate); 5.0 to 20.0 parts of aliphatic series-aromatic copolyester; 1.0 to 4.0 parts of 1, 1 '-methylenebis-4, 1-phenylene-bismaleimide, and 1.0 to 4.0 parts of 1, 1'-methylenebis-4, 1-phenylene-bismaleimide; 0.5 to 2.0 parts of talcum powder; the method comprises the following steps: mixing dried poly (butylene succinate), aliphatic-aromatic copolyester, bismaleimide and talcum powder, performing reactive extrusion and melt mixing through a twin-screw extruder, and then cooling, pelletizing and drying the extrudate. Through specific components and a reactive extrusion process, a dynamic cross-linked network is formed by utilizing a Diels-Alder reaction, and the modified master batch degradable material of which the comprehensive mechanical property and the heat resistance are remarkably improved is prepared.

The invention relates to the technical field of reverse osmosis scale inhibitor preparation, and particularly discloses a concentrated water reverse osmosis scale inhibitor and a preparation method thereof.The scale inhibitor comprises 8-10 parts of pentaerythritol, 10-30 parts of acrylic acid, 10-30 parts of a triallyl borate monomer, 5-10 parts of a zinc acrylate monomer, 3-6 parts of a vinyl sulfonic acid monomer and 10-30 parts of a poly (butylene succinate) prepolymer. According to the reverse osmosis scale inhibitor, pentaerythritol serves as a central core, a good starting site is provided for construction of a dendritic structure, acrylic acid and pentaerythritol are subjected to an esterification reaction, each hydroxyl group reacts with acrylic acid to be connected with an acrylate branched chain, a first-generation dendritic structure is formed, and the first-generation dendritic structure is formed; the preparation method comprises the following steps: firstly preparing a dendritic polymer, then introducing a boron element, a zinc element and a sulfonic acid group through a copolymerization reaction to enhance the scale inhibition effect of the dendritic polymer, and finally performing condensation with a poly (butylene succinate) (PBS) chain segment to improve the biodegradability of the dendritic polymer.

The invention belongs to the technical field of degradable and high-barrier modified plastics, and particularly relates to an environment-friendly, high-oxygen-barrier and water-resistant modified plastic, a plastic alloy and a functional product of the environment-friendly, high-oxygen-barrier and water-resistant modified plastic and the plastic alloy. According to the material, polyvinyl alcohol is used as a main component and is blended with auxiliaries such as a plasticizer and a cross-linking agent through a twin-screw melt extrusion technology, and modified plastic (HB-PVOH) with excellent barrier property, water resistance and mechanical property is formed. In order to further enhance the performance, the HB-PVOH can be co-extruded with polymers such as polyhydroxyalkanoate, polymethyl ethylene carbonate, polylactic acid, poly (butylene succinate) and the like to prepare binary or ternary plastic alloy. The material can be widely applied to the fields of high-end packaging, oxygen barrier coatings, environment-friendly packaging and the like, plastic or paper-plastic composite products are prepared through a multi-layer co-extrusion-film blowing, curtain coating or film spraying technology, the sustainable development trend of aluminum reduction, plastic reduction and fluorine reduction is met, and the material is a green packaging solution which is high in cost performance, environmentally friendly and practical.

The invention relates to the technical field of papermaking, in particular to food waterproof and oilproof paper and a preparation method thereof.The food waterproof and oilproof paper is composed of base paper and a coating layer covering the surface of the base paper; the base paper is prepared from the following raw materials: sisal fibers, polylactic acid fibers, water glass, nano silicon dioxide, starch and polyacrylamide; preparing a coating layer: coating the surface of base paper with the coating liquid, and then drying and calendering to obtain the coating layer; the coating liquid is prepared from the following raw materials: modified fucoidin, poly (butylene succinate), modified nano cellulose, sorbitol, polysilicate aluminum sulfate, polyvinyl alcohol, sodium thiosulfate and water. Through matching and combination of the raw materials, the food waterproof and oil-proof paper has certain antibacterial property and strength while improving waterproof and oil-proof properties, and the food fresh-keeping effect is improved.

The invention belongs to the technical field of preparation of molecular materials and adhesive tapes, and discloses a degradable mylar adhesive tape and a preparation method thereof, the degradable mylar adhesive tape comprises a degradable base material layer and a degradable adhesive layer; the degradable base material layer is prepared from the following raw materials in parts by mass: 25-35 parts of poly (butylene succinate) (PBS), 20-30 parts of polylactic acid (PLA), 10-15 parts of polycaprolactone (PCL), 8-12 parts of modified bamboo fiber powder, 3-5 parts of a compatibilizer and 0.5-1 part of an antioxidant; the degradable adhesive layer is prepared from the following raw materials in parts by mass: 40 to 50 parts of a modified starch-based adhesive, 15 to 25 parts of poly (butylene adipate-co-terephthalate) (PBAT), 10 to 15 parts of polyhydroxyalkanoate (PHA), 5 to 8 parts of sodium alginate-chitosan composite gel, 5 to 8 parts of an epoxypropane modifier, 1 to 2 parts of a cross-linking agent and 0.3 to 0.5 part of a de-foaming agent; by optimizing the raw material composition and the preparation process of the base material and the adhesive, the full-life-cycle degradability of the adhesive tape is realized, and meanwhile, excellent mechanical properties, insulativity and temperature resistance are ensured.

The invention belongs to the technical field of packaging materials, and particularly relates to a packaging material with antibacterial activity and a preparation method thereof. The packaging material with antibacterial activity is prepared from the following raw materials in parts by weight: 60 to 70 parts of polylactic acid, 10 to 20 parts of poly (butylene succinate), 3 to 5 parts of modified montmorillonite, 0.5 to 1 part of a bacteriostatic agent, 0.5 to 1 part of a lubricating agent, 1 to 3 parts of a compatilizer and 1 to 1.5 parts of functional filler. The packaging material provided by the invention has excellent barrier property, antibacterial property and mechanical property, stable fixation and synergistic interaction of functional components such as the modified montmorillonite and the functional filler are realized, and the packaging material has important significance in promoting technical progress of the packaging industry and meeting the requirements of the market on high-performance packaging materials.

The invention provides an aerogel-based submarine cable material as well as a preparation method and application thereof.The submarine cable material is prepared from the following raw materials in parts by weight: 10-20 parts of modified aerogel, 20-25 parts of high-density polyethylene, 6-10 parts of a styrene-maleic anhydride copolymer, 4-6 parts of 2, 7-anthraquinone ethanesulfonic acid and 5-7 parts of modified poly (butylene succinate), 2 to 4 parts of acetyl triethyl citrate; the modified aerogel is prepared from silane modified aerogel and sulfydryl modified aerogel in a mass ratio of 1: (1-3). By compounding the raw materials, the comprehensive performance of the cable material is comprehensively improved, so that the cable material has excellent light weight, pressure resistance, low temperature resistance, corrosion resistance, flexibility, aging resistance and chemical stability, has good environmental adaptability, prolongs the service life of a cable in an extreme seabed environment, and has good social use value.

The invention discloses bamboo fiber full-biodegradable tableware which is prepared from the following components in parts by weight: 40-50 parts of poly (butylene succinate), 15-20 parts of bamboo fiber, 12-16 parts of sweet potato starch, 8-12 parts of sodium alginate and the like, the bamboo fiber is pretreated by a sodium hydroxide solution, and montmorillonite is modified by a silane coupling agent KH-570. The preparation method comprises the steps of high-speed mixing, twin-screw extrusion granulation, injection molding, drying, ultraviolet sterilization and the like, five temperature zones are set for twin-screw extrusion, and the injection molding temperature is controlled to be 165-175 DEG C. The hydrophobicity is improved without depending on silicone oil and the like, and the synergism of mechanics and degradability is better; high-temperature heating is not needed, energy consumption is lower, and antibacterial and mildew-proof functions are added. The 60-day biodegradation rate of the tableware is larger than or equal to 95%, the tensile strength is larger than or equal to 26 MPa, and the tableware has excellent water resistance and oil resistance and meets the requirements for environmental protection and use.

The invention belongs to the technical field of pressure-sensitive adhesives, and provides a biodegradable pressure-sensitive adhesive and a preparation method thereof. The biodegradable pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 50 to 60 parts of polybutylene succinate, 20 to 30 parts of degradable thermoplastic elastomer, 20 to 30 parts of tackifying resin, 6 to 12 parts of plasticizer, 0.5 to 1.5 parts of mildew preventive, 0.5 to 2 parts of antioxidant and 0.3 to 1 part of anti-aging agent, wherein the degradable thermoplastic elastomer is a polycaprolactone-polylactide segmented copolymer, the weight-average relative molecular mass of the degradable thermoplastic elastomer is 50000 to 70000, and the content of a polycaprolactone phase in the polycaprolactone-polylactide segmented copolymer is 65 to 80 percent. The biodegradable pressure-sensitive adhesive not only has excellent adhesive property, but also has excellent biodegradability, and can effectively overcome the defects of weak cohesion, poor adhesive property and poor degradability of the existing hot-melt pressure-sensitive adhesive containing the thermoplastic elastomer.

The invention discloses a low-cost polyester degradable plastic garbage bag and an extrusion blow molding process thereof. The garbage bag is prepared from a composite material with a specific formula comprising poly (butylene succinate) (PBS), polylactic acid (PLA), surface-modified nano calcium carbonate, a degradation aid, a compatilizer and an anti-blocking agent. The key of the preparation process is as follows: deep drying pretreatment of raw materials; uniform dispersion and compatibility of all the components are realized through high-speed mixing and twin-screw melt blending granulation; a single-screw extrusion film blowing machine provided with an internal cooling (IBC) system is adopted, and stable forming of film bubbles and preparation of an ultrathin film are achieved under the condition that the temperature, the blow-up ratio and the traction speed are accurately controlled. Through collaborative innovation of a material formula and a process, the technical problems that an existing degradable garbage bag is high in cost, insufficient in mechanical property, poor in processing stability, uncontrollable in degradation behavior and the like are successfully solved.

The invention relates to the technical field of high polymer materials, in particular to a degradable PHA tableware material and a preparation method thereof. The degradable PHA tableware material overcomes the problem that the degradable PHA tableware material is poor in mechanical property and antibacterial property. The preparation method comprises the following steps: drying polyhydroxyalkanoate, poly (butylene succinate), acetylated lignin, nano-zinc oxide, chitosan oligosaccharide and hexagonal boron nitride, carrying out melt extrusion on the dried materials, maleic anhydride grafted PHA, acetyl tributyl citrate and cinnamyl aldehyde in a double-screw extruder, carrying out injection molding, and carrying out plasma treatment activation. Polyurethane antibacterial slurry containing silver-loaded zeolite is sprayed, the tableware material with the body-surface synergistic enhancement function is finally obtained, and the impact strength, rigidity and antibacterial rate of the material are improved.

The present invention discloses a two-dimensional flexible temporary plugging agent for fracturing and a preparation method thereof, wherein step S1, a toughening agent is melt-blended with a biodegradable material to toughen and modify the biodegradable material, and the mixture is cooled to obtain a particle masterbatch; the toughening agent is selected from at least one of polycaprolactone PCL, a copolymer of butylene adipate and butylene terephthalate PBAT, polybutylene succinate PBS, and polyhydroxyalkanoate PHA; the biodegradable material is polylactic acid or polyglycolide or a mixture of the two; S2, the particle masterbatch is uniformly dispersed in a polyvinyl alcohol solution to obtain a mixed solution; S3, the mixed solution is spun to obtain fibers, the fibers are processed into cloth, and the woven cloth is cut into different shapes to obtain a two-dimensional flexible temporary plugging agent. The two-dimensional flexible temporary plugging agent, when in contact with water and reaching a certain temperature, can be flexibly deformed to wrap the temporary plugging agent particles and powder to form a composite temporary plugging steering, which significantly improves the temporary plugging effect.

The invention discloses a full-degradable high-temperature-resistant foaming material which comprises a low-density system, a medium-density system and a high-density system, the low-density system comprises the following components: stereocomplex polylactic acid formed by mixing poly-L-lactic acid and poly-D-lactic acid, poly (butylene succinate), surface radiation modified straw fibers, talcum powder, nano clay and supercritical carbon dioxide; the medium-density system comprises the following components: stereocomplex polylactic acid formed by mixing poly-L-lactic acid and poly-D-lactic acid, poly (butylene succinate), plasticized starch, an AC foaming agent, zinc oxide and citric acid; the high-density system comprises the following components: stereocomplex polylactic acid formed by mixing poly-L-lactic acid and poly-D-lactic acid, polyhydroxybutyrate, surface radiation modified straw fibers, sodium bicarbonate and a DCP dynamic cross-linking agent. The full-degradable high-temperature-resistant foaming material provided by the invention has the advantages of high temperature resistance, good mechanical property, complete degradation and the like.