1607 results about "Masterbatch" patented technology

This case relates to a self-healing optical film and its preparation method. The optical film is made by adding a nanoparticle suspension to PET masterbatch as the main material during its melt extrusion process, resulting in a cast sheet. After biaxial stretching, a self-healing coating liquid is coated online, followed by shaping and cooling. The nanoparticle suspension includes nano-titanium oxide, MAH-PET polymer, ATO nanoparticles, and titanate coupling agent. The self-healing coating liquid is produced by core-shell emulsion polymerization, forming a nano-silica hard core and an acrylate functional monomer polymer soft shell. This invention adds the nanoparticle suspension by in-situ feeding in the middle of the extruder, reducing steps, improving dispersion uniformity, and making the film surface smoother. Then, the self-healing coating liquid is applied online after longitudinal stretching and before transverse stretching, forming a film on the film surface, improving the hardness and scratch resistance of the film material, enabling rapid self-healing at room temperature, strong stability, and avoiding the occurrence of rainbow patterns.

The invention discloses a talcum powder filled regenerated polypropylene composite material and a preparation method thereof, and relates to the technical field of regenerated polypropylene. The talcum powder filled regenerated polypropylene composite material comprises the following raw materials in parts by mass: 100 parts of regenerated polypropylene, 15-18 parts of a nucleating agent, 8-10 parts of a cross-linking agent, 0.1-0.3 part of an initiator, 0.5-1 part of an antioxidant, 0.5-0.7 part of a light stabilizer and 1-2 parts of a lubricant. The regenerated polypropylene comprises a regenerated polypropylene master batch and a modified polypropylene master batch in a mass ratio of 1: (1-2); the nucleating agent comprises modified talcum powder and an organic carboxylate nucleating agent in a mass ratio of 50: (1-2). According to the regenerated polypropylene composite material provided by the invention, the mechanical property of regenerated polypropylene is remarkably improved, and the generation of volatile irritant gas after processing is reduced.

The invention relates to a polyethylene and silica gel mixed material, a preparation method thereof and application of the polyethylene and silica gel mixed material in a composite optical cable silicon core tube. The composite material comprises the following components in parts by weight: high-density polyethylene, an ethylene-siloxane copolymer elastomer, a maleic anhydride grafted polyolefin elastomer, hydroxylated nano silicon dioxide, liquid paraffin, a crystallization nucleating agent, an ultraviolet light absorber, an auxiliary stabilizer, a processing aid and color master batch. The liquid paraffin is formed by blending dual-molecular-weight paraffin with different carbon chain lengths, and part of the liquid paraffin is grafted and modified by polybutylene so as to enhance the anchoring capacity of the lubricating phase; in addition, nano cellulose crystals grafted by a PEG-PCL (Polyethylene Glycol-Polycaprolactone) block copolymer are introduced, so that the dimensional stability and the interface structure integrity of the material are synergistically enhanced. The composite material has excellent low friction, thermal oxidation stability, creep resistance and ultraviolet aging resistance, and is suitable for preparation of a high-performance composite optical cable silicon core tube.

This invention discloses a PETG co-extruded composite sheet and its preparation method. The method involves adding extruder and APET masterbatch to an extruder, then layering and combining the extruder melt and APET masterbatch melt to form a composite melt with an upper and lower layer of extruder and a middle layer of APET masterbatch. This is then shaped by roller pressing to obtain the PETG co-extruded composite sheet. During the blending process of modified polyester and modified filler, the epoxy group structure in the modified polyester molecule can react with the secondary amine in the modified filler, resulting in mild cross-linking and increasing the strength of the polyester material. The modified polyester molecular chain contains polysiloxane segments, and also has polysiloxane segments branched onto its side links. When impacted, the flexible polysiloxane segments absorb and dissipate a large amount of energy through violent movement, rotation, and entanglement. Furthermore, the nano-reinforcing points formed by the cage-like silsesquioxane structure within the molecule contribute to the excellent scratch resistance of the prepared composite sheet.

The invention discloses an antistatic PET dust-free film and a preparation method thereof, and relates to the technical field of high polymer materials. When the antistatic PET dust-free film is prepared, firstly, 6-bromohexanoic acid reacts with 4-imidazole-1-butyric acid, and then is subjected to ion exchange with potassium hexafluorophosphate to prepare diacid imidazole hexafluorophosphate ionic liquid; the preparation method comprises the following steps: enabling montmorillonite to react with tetraethoxysilane, 3-aminopropyltriethoxysilane and dodecyl triethoxysilane, so as to obtain modified montmorillonite; carrying out copolycondensation on terephthalic acid, the diacid imidazole hexafluorophosphate ionic liquid, ethylene glycol and the modified montmorillonite to prepare a modified polyester master batch; and carrying out melt blending on the modified polyester master batch and a chain extender, and carrying out blow molding to obtain the antistatic PET dust-free film. The prepared antistatic PET dust-free film has the advantages of being antistatic, flame-retardant, super-hydrophobic and low in dust adhesion rate.

The invention belongs to the technical field of crossing of high polymer materials and artificial intelligence, and discloses a method for optimizing the proportion of a nano-composite flame-retardant master batch in engineering plastic based on machine learning. The method is used for solving the problems that a traditional experience trial and error method is low in efficiency in multi-target performance collaborative optimization, high-dimensional nonlinear parameter space search is difficult, and microscopic coupling effect modeling is missing. According to the method, a multi-dimensional input feature set containing material composition and process parameters is constructed, six key performance indexes are combined to form training data, a mixed model formed by cascading a multi-layer perceptron and Gaussian process regression is trained, an improved non-dominated sorting genetic algorithm (NSGA-II) is adopted for multi-target global optimization, and an optimal ratio meeting preset constraints is obtained. The method is an industrial internet technology system service, and solves the technical problem that multi-target performance is difficult to collaboratively optimize due to the fact that a traditional experience trial-and-error method cannot perform modeling and searching on a high-dimensional nonlinear parameter space of a nano-composite flame-retardant system.

The invention relates to a biaxially oriented polypropylene composite film for a capacitor and a preparation method of the biaxially oriented polypropylene composite film. The biaxially oriented polypropylene composite film is of an ABA three-layer structure; wherein the layer A is prepared from the following raw materials: PP, a nucleating agent and a composite filler of MAH-g-PP and nanoparticles; the layer B is prepared from the following raw materials: PET master batch, modified silicon dioxide and a brush polymer. According to the preparation method, the three-layer structure composite film is prepared, the layers are firmly combined through covalent bonds, hydrogen-bond interaction and the like, and the interlayer peel strength is remarkably improved; a nano particle filler with a high dielectric constant is introduced into the A-layer structure, so that the dielectric strength of the film is improved, and meanwhile, the film has relatively high anti-breakdown strength; and the layer B effectively improves the mechanical stability of the film material, and has higher mechanical property and material rigidity compared with the traditional PP film.

Described herein are compositions comprising a polymer / plastic carrier and potassium metabisulphite for imparting antimicrobial activity to a plastic material. Methods for making the same, and uses of the same for microbial control, are also disclosed.

The invention relates to a preparation method of a high-elastic wear-resistant rubber sole. Comprising the following steps: S1, uniformly mixing 50-60 parts by weight of epoxy resin, 10-20 parts by weight of a polyurethane-acrylate copolymer, 20-30 parts by weight of an elastic complex, 3-5 parts by weight of stearic acid, 1-4 parts by weight of zinc oxide, 3-5 parts by weight of zinc stearate and 2-4 parts by weight of zinc oxide; the preparation method comprises the following steps: uniformly mixing 1-3 parts by weight of magnesium oxide and 1-3 parts by weight of an AC foaming agent in an internal mixer at the temperature of 60-70 DEG C, internally mixing for 30-60 minutes, continuously mixing for 15-20 minutes at the temperature of 90-95 DEG C, granulating after open milling, and standing for 20-24 hours at room temperature to obtain a molding master batch; s2, putting the molding master batch into a foaming mold for compression molding, controlling the mold closing pressure to be 15-25MPa, then heating to 180-190 DEG C together with the foaming mold, performing vulcanization treatment for 8-15 minutes, cooling, and performing standing treatment at room temperature for 20-24 hours to obtain the high-elasticity wear-resistant rubber sole. According to the high-elastic wear-resistant rubber sole, the preparation method and the damping shoe, a good damping effect is achieved, and certain mechanical strength is achieved.

The invention relates to the field of film preparation, in particular to a high-filling anti-aging flame-retardant polypropylene film and a preparation method thereof.The high-filling anti-aging flame-retardant polypropylene film is prepared from, by mass, 20.6-36.3% of homo-polypropylene resin, 20.6-36.3% of flame retardant, 0.3-0.5% of antioxidant, 0.3-0.5% of lubricant, 0.3-0.5% of lubricant 53.3 to 60% of halogen-free intumescent flame retardant master batch; 10%-18% of an anti-dripping auxiliary agent master batch; 0.1 to 0.4 percent of an antioxidant; and 0-1% of black master batch. According to the invention, the halogen-free intumescent flame retardant and the anti-dripping auxiliary agent are respectively added in the form of master batch, so that good dispersion and uniform distribution of the flame retardant powder in polypropylene resin are realized, the appearance of the flame-retardant polypropylene film is qualified, the tensile strength is higher, the elongation at break is increased, the flame-retardant PP film with the thickness of 0.43 mm and 0.25 mm can reach the V-0 grade, and the flame-retardant PP film with the thickness of 0.43 mm and 0.25 mm can reach the V-0 grade. And the flame retardant property of the film is not degraded after long-period room-temperature storage and high-temperature and high-humidity aging.

The invention relates to the technical field of plastic films, in particular to an antibacterial degradable film and a preparation method thereof. The problem that a traditional degradable film is poor in antibacterial property and mechanical property is solved. The film is prepared from the following raw materials: PLA, PBS, PHA, PCL, modified nanocellulose, an antibacterial agent, composite antibacterial particles and maleic anhydride grafted PLA. The preparation method comprises the following steps: preparing functional master batches from silane coupling agent modified nano-crystalline cellulose and PLA, preparing antibacterial master batches from ZIF-8 loaded tea polyphenol antibacterial agent, mesoporous silica loaded chitosan composite antibacterial particles and PBS, adding the rest of matrix resin, functional master batches, antibacterial master batches and compatilizer into an extruder step by step, and carrying out extrusion molding to obtain the composite antibacterial material. And after mixing, plasticizing and exhausting, blow-molding to form a film, thereby obtaining the antibacterial degradable film. The mechanical property is enhanced through the functional master batch, and the composite antibacterial system has synergistic interaction, so that the film has excellent antibacterial property and mechanical property on the basis of degradability.

The invention provides a heat-conducting and electromagnetic-shielding composite functional master batch as well as a preparation method and application thereof. The heat conduction / electromagnetic shielding composite functional master batch comprises engineering plastic, heat conduction electromagnetic shielding filler and a toughening agent, and the heat conduction electromagnetic shielding filler comprises heat conduction resistance type electromagnetic shielding filler and heat conduction magnetic loss type electromagnetic shielding filler, the heat-conducting resistance type electromagnetic shielding filler comprises a one-dimensional carbon filler and a two-dimensional carbon filler, and comprises engineering plastic, a flexibilizer and a heat-conducting electromagnetic shielding filler. Under the action of the composite force field module under the combined action of stretching and shearing, uniform dispersion of the engineering plastic and the functional filler is realized, and synchronous improvement of heat conduction and electromagnetic shielding performance of the engineering plastic is realized.

The invention relates to a mildew-proof and odor-resistant textile material produced from conjugated fibers and a preparation method of the mildew-proof and odor-resistant textile material, and belongs to the technical field of textiles. According to the invention, the antibacterial color fixing agent is prepared, the antibacterial color fixing agent is used for carrying out ester exchange modification on PTT to obtain the modified PTT master batch, and then the master batch is used as an'island 'component to prepare the sea-island conjugated fiber, so that the technical defect that a functional auxiliary agent is dissolved in a solvent together with the'sea' component when the sea-island conjugated fiber is prepared is effectively overcome; the sea-island conjugated fiber textile material has good antibacterial performance, still has good retention rate after being washed with water, has good moisture regain and color fastness, is skin-friendly and breathable, and effectively improves the wearing comfort of the PTT-based textile material.

The invention belongs to the technical field of polyester fibers, and particularly provides a flame-retardant polyester fiber and a preparation method thereof.The polyester fiber is prepared from, by weight, 50-70 parts of polyester chips, 6-10 parts of flame-retardant polyester master batch and 1-2 parts of antioxidant; wherein the flame-retardant polyester master batch is obtained by extruding and granulating a montmorillonite-based flame retardant and polyester powder. According to the invention, the montmorillonite-based flame retardant is introduced into the polyester fiber, so that the polyester fiber has excellent flame retardance and anti-dripping effect.

The invention provides a degradable breathable composite film based on a gradient microporous structure and a preparation method and application thereof, and belongs to the field of protective materials.The preparation method comprises the steps that PLA, PBAT, ADR, CaCO3 and modified master batches are subjected to melt blending in proportion, a three-layer casting film is prepared through three-layer casting film forming equipment, the three-layer casting film is formed through a stretching technology, and a gradient breathable film is obtained; a PLA non-woven fabric is prepared through a melt-blowing or spun-bonding technology; and compounding the gradient breathable film with a PLA non-woven fabric to obtain the degradable breathable composite film based on the gradient microporous structure. The three-layer casting co-extrusion process is adopted, the gradient porosity breathable film and the hydrophilic / hydrophobic design are combined, the comprehensive performance of the protective material is effectively improved, the moisture permeation amount of the material is increased, the hydrostatic pressure of the material is improved, and therefore the barrier property and comfort of the material are enhanced. The blocking layer is made of a porous membrane material formed by stretching PLA and PBAT composite CaCO3, the comfortable layer is made of a PLA spunbond / melt-blown non-woven fabric material, and full degradation of the protective material is achieved.

The invention provides a high-performance nylon material and a preparation method thereof. The high-performance nylon material comprises the following components in parts by weight: 30-65 parts of polyamide 66; 5 to 25 parts of special nylon resin; 30 to 35 parts of glass fiber; 0.2 to 0.4 part of an antioxidant; 0.4 to 0.8 part of a lubricant; 1 to 3 parts of compatilizer; 5-15 parts of a wear-resistant auxiliary agent; 0.6 to 1.0 part of a weather-proof auxiliary agent; and 0.3 to 0.7 part of black master batch. The nylon material prepared by the invention is suitable for performance requirements of outdoor precision bearings, and has excellent performances of low friction coefficient, low abrasion, high strength, high modulus, long-period weather resistance, long-period high temperature and high humidity resistance and the like.

The invention discloses BR-g-MAH, a vulcanized rubber composition with metal adhesiveness and a method for improving the adhesiveness of rubber and metal. The BR-g-MAH is prepared by the following steps: adding preparation raw materials including butadiene rubber and maleic anhydride into an internal mixer, and plastifying to obtain the BR-g-MAH. The invention provides a vulcanized rubber composition with metal adhesiveness. The vulcanized rubber composition is prepared from masterbatch, BR-g-MAH, sulfur, a vulcanization accelerator and a scorch retarder. The invention provides a method for improving adhesiveness of rubber and metal. The method comprises the steps that 1, activation pretreatment is conducted on the surface of the metal; 2, taking the raw material components according to the formula of the vulcanized rubber composition, mixing on a double-roller open mill, and discharging to obtain rubber sheets; 3, the activated metal and the rubber sheet are subjected to hot pressing vulcanization, and the vulcanized rubber-metal compound is obtained. According to the invention, the bonding of metal and rubber can be realized under the condition of no other bonding agent.

The invention discloses a preparation method of a composite current collector base film based on flame-retardant and aging-resistant modified PP and a composite current collector, the method comprises the following steps: 1) preparation of a modified PP master batch: mixing 100 parts by weight of PP resin, 0.5-1.8 parts by weight of a lubricant and 10-25 parts by weight of a flame-retardant and aging-resistant composite filler, and stirring at 100-135 DEG C for 0.5-2 h to obtain the modified PP master batch; (2) carrying out melt extrusion, tape casting and sheet casting to obtain an intermediate sheet; 3) biaxial stretching; and 4) carrying out heat setting, rolling and slitting to obtain the composite current collector base film. The invention provides the PP base film with excellent flame-retardant and aging-resistant performance and good mechanical strength; furthermore, based on the PP base film, the composite current collector is obtained after copper layers are formed on the two surfaces of the PP base film by adopting a conventional water electroplating process, and the copper layers and the PP base film in the composite current collector have high bonding strength, so that the service life of the composite current collector can be effectively prolonged.

The invention discloses a multi-layer composite polypropylene color master batch and a preparation method thereof.The multi-layer composite polypropylene color master batch comprises an inner layer, a middle layer and an outer layer, the inner layer is coated with the middle layer, the middle layer is coated with the outer layer, matrix resin, a composite toughening agent and an interface modifier are subjected to melt blending in a double-screw extruder, nano reinforcing filler is added, extrusion granulation is performed, and the multi-layer composite polypropylene color master batch is obtained. Carrier resin, hyperbranched polyesteramide and a toner pre-dispersion body are mixed at a high speed and then uniformly coated on the outer surface of the inner layer through fluidized bed equipment, and a mixture of a weather-proof additive and a lubricant is attached to the outer surface of the middle layer by adopting an electrostatic spraying process to form the outer layer. According to the multi-layer composite color master batch, the matrix resin and the composite toughening agent have a synergistic effect, so that the impact strength of the color master batch is improved, the cavity structure of hyperbranched polyesteramide is coated with the toner, the silane is used for treating the nano filler to reduce agglomeration and chromatic aberration, the outer layer delays aging, the lubricant reduces the extrusion torque, and the multi-layer composite color master batch is adaptive to a high-speed pipe production line.

The invention discloses a moisture-absorbing breathable polyamide fiber fabric and a preparation method thereof, and relates to the technical field of polyamide fiber fabrics. The method comprises the following steps: preparing a nano silicon dioxide composite template agent, and blending the nano silicon dioxide composite template agent with chinlon slices to prepare modified master batches; after special-shaped hollow spinning and weaving, a pore-foaming agent is dissolved out through hot water treatment, and a porous structure is constructed in the fiber; then carrying out plasma activation on the fabric, and grafting monomers such as acrylic acid, acrylamide and stearyl methacrylate on the surface and in pores of the fiber by adopting a radiation grafting method to form a hydrophilic-hydrophobic dual-channel structure; then, pre-crosslinked composite particles prepared from chitosan, beta-cyclodextrin and the like are loaded in micropores of the fabric through a vacuum-positive pressure circulation process; and finally, treating by using a finishing liquid containing blocked isocyanate, and carrying out heat setting. The prepared fabric has high moisture absorption rate, large moisture absorption capacity and excellent wet air permeability, is washable and anti-yellowing, and is suitable for high-performance sports and outdoor clothes.

The invention discloses a fire-resistant flame-retardant PP composite material for a new energy battery shell and a preparation method thereof, belongs to the technical field of PP composite materials, and aims to solve the technical problem that the mechanical strength, flame retardance, heat aging resistance and corrosion resistance of the PP composite material in the prior art need to be further improved. The glass fiber reinforced polypropylene composite material specifically comprises the following components in parts by weight: 30-50 parts of polypropylene, 3-8 parts of polypropylene grafted master batch, 20-50 parts of glass fiber, 15-30 parts of a composite flame retardant, 1-3 parts of modified nano zinc oxide, 6-10 parts of a composite reinforcing agent and 1-5 parts of an additive. The polypropylene grafted master batch, the composite flame retardant, the modified nano zinc oxide and the composite reinforcing agent are added into the polypropylene base material, so that the mechanical strength, the flame retardance, the heat aging resistance and the corrosion resistance of the PP composite material are further optimized.

The automatic material changing device comprises at least two material barrels provided with pneumatic valves, a connecting plate, a rack, an air cylinder, a collecting barrel and an industrial personal computer, the connecting plate is connected to the rack in a sliding mode and located below a feeding mechanism, the material barrels are installed on the connecting plate, and the air cylinder is installed on the connecting plate. The collecting barrel is installed on the connecting plate and located below the connecting plate, the air cylinder is arranged on the rack to drive the connecting plate to slide, and the industrial personal computer is in communication connection with the air cylinder and the pneumatic valve. The device has the beneficial effects that residual raw materials are used up, and waste of the raw materials is reduced; the equipment is automatically driven to replace the color masterbatch, so that the production efficiency is improved, and the influence of shutdown and startup lifting speed on the product quality is improved; and the manual operation cost is reduced.

The invention relates to the technical field of high polymer materials, in particular to an anti-aging thread gluing material and a preparation process thereof. Comprising the following steps: preparation of aluminum-doped zinc oxide, tannic acid modified aluminum-doped zinc oxide, ferulic acid modified nylon fiber and modified nylon master batch preparation of the thread gluing. According to the invention, groups of tannic acid and aluminum ions and zinc ions of aluminum-doped zinc oxide are driven by heat energy of a reflux reaction to simultaneously generate chelation-dehydration condensation to form a five-membered ring chelate, so that a compact coating layer is formed on the surface, and the coating layer is simple in component and has very stable chemical bonds; the ultraviolet light stability of aluminum-doped zinc oxide is enhanced, the layer can generate hydrogen bond / pi-pi interaction with nylon amido bonds, the interface bonding strength is improved, the particle size is kept at the level of no filter pressure fluctuation in the spinning process, and the volume resistivity of nylon fibers is reduced.

The invention discloses a preparation method of a high-performance electric-breakdown-resistant capacitor base film, which comprises the following steps: S1, preparing modified polypropylene master batch: mixing polypropylene, a cycloolefin copolymer, a barium titanate-carbon nanotube modified composite filler and an antioxidant, and carrying out melt blending, extrusion and granulation to obtain the modified polypropylene master batch; s2, carrying out melt extrusion on the modified polypropylene master batch, cooling and casting; s3, carrying out two-way stretching and heat setting on the obtained casting piece to obtain a polypropylene film; and S4, performing plasma treatment on the surface of the polypropylene film to obtain the high-performance electric-breakdown-resistant capacitor base film. The high-performance electric-breakdown-resistant capacitor base film prepared by the method has excellent electric breakdown resistance, mechanical strength, flame retardance and heat resistance, has a long-acting flame retardant effect, is excellent in comprehensive performance and has a wide market application prospect.

This invention provides a novel thermal insulation fabric and its preparation method. The preparation method uses polyester material as the polymer matrix, Cs x Wo3NPs, as a photothermal conversion material, is melt-blended and extruded to obtain a composite masterbatch, which is then melt-spun into composite polyester fibers. These fibers are subsequently knitted with a certain proportion of spandex filaments to create a novel thermal insulation fabric. This fabric not only possesses excellent light absorption and heat generation properties, but also addresses the technical issues of easy coating peeling and short service life in finished textiles by encapsulating inorganic nanoparticles with organic polymers. This ensures the stability and safety of the photothermal conversion nanoparticle material. Furthermore, the fabric has a silky smooth feel, good elasticity, and excellent dyeing properties.

The full-automatic color master batch mixing machine comprises a mixing bin, a controller and three feeding bins are installed on the mixing bin, the three feeding bins are all communicated with the mixing bin, the top ends of the three feeding bins are all communicated with material barrels, fixing mechanisms are all arranged on the three feeding bins, and smashing and feeding mechanisms are all arranged on the three feeding bins. A crushing mechanism is arranged in the mixing bin, a discharging groove is formed in the bottom end of the mixing bin, and a blocking mechanism used for blocking the discharging groove is arranged on the mixing bin. Corresponding materials can be smashed and conveyed to the mixing bin to be mixed according to the preset mixing proportion and the automatically-calculated rotating speed through the smashing and feeding mechanism, when the mixing bin is full of the materials, the smashing mechanism can conduct secondary smashing, and finally it can be guaranteed that solid particles are smashed into the needed specification.

The embodiment of the invention discloses an injection-molded long carbon fiber reinforced polyether-ether-ketone alloy composite material and a preparation method thereof. Nano filler modified polyether-ether-ketone alloy powder is prepared from polyether-ether-ketone, modified resin and a nano modifier; preparing soft and hard sizing agent hybrid modified long carbon fibers from continuous carbon fibers and the prepared sizing solution; nano-filler modified polyether-ether-ketone alloy powder, a deionized water solution containing a surfactant and a thickening agent and soft and hard sizing agent mixed modified long carbon fibers are adopted to prepare long carbon fiber master batches; and carrying out injection molding on the long carbon fiber master batch by adopting an optimized injection molding process to prepare the long carbon fiber reinforced polyether-ether-ketone alloy composite material. The mechanical properties, electric conduction, heat conduction and friction properties of the composite material are greatly improved, and the defects of a polymer material in the aspect of functionality are further made up; moreover, the effective retention length of fibers in the injection molding master batch is greatly increased, the organic solvent is prevented from damaging molecular chain segments of a resin matrix, and the injection molding master batch is more environment-friendly.

Provided herewith is a micro-sized foaming pellets masterbatch composition for a weight-reduced controlled micro-foaming plastic product, which includes a thermoplastic carrier resin, a bi-component micro-foaming agent comprising a gas carrier and an acid carrier, an amphiphilic stabilizing agent selected from a fatty acid-modified salt, glycerol monostearate, or a combination thereof, and an adsorbing dispersant. The masterbatch composition is compatible with a broad processing temperature range to cater to the manufacture of a wide variety of plastic types with various base plastic resins, while allowing controlled micro-sized foaming in the plastic products, thereby enabling facile manufacture of microfoam plastic products with lower weight and good mechanical strength retention with low cost, high flexibility and regulatory compliance.

The invention discloses a preparation method of a woven bag, and the preparation method comprises the following steps: nano reinforced phase pretreatment and master batch preparation, woven cloth layer production, functional layer film co-extrusion, multi-layer compounding process, post-treatment and bag making. In the preparation method, modified nano silicon dioxide and nano calcium carbonate are introduced, so that the tensile strength of the woven bag is improved; wherein the surface of the modified nano silicon dioxide is treated by a coupling agent, strong interface bonding is formed between the modified nano silicon dioxide and a polypropylene matrix, and rigid nano particles effectively bear and disperse stress; nano calcium carbonate is dispersed in polypropylene as a rigid filler, molecular chain slippage is hindered, the material rigidity is improved, and meanwhile the impact resistance of the woven bag is improved through reinforcing phase modification and composite structure design.

The embodiment of the invention discloses a degradable filling plastic master batch and a preparation method thereof. The degradable filling plastic master batch comprises the following components: a bio-based material, an accelerant, a lubricant, a modifier, an antioxidant, a cross-linking agent and a coupling agent, wherein the bio-based material is polylactic acid; the accelerant is modified starch; the plastic modified material is calcium carbonate; the modifying agent comprises pe wax and / or ebs; the lubricant comprises zinc stearate and POE (Polyolefin Elastomer); the antioxidant is a composition of lignin and phosphite ester; the cross-linking agent is triallyl isocyanate, and / or epoxidized soybean oil; the coupling agent is a silane coupling agent or an aluminic acid coupling agent, can provide the strength of the degradable filling master batch, is not prone to deformation during stretching, has an anti-oxidation effect, is more reinforced and durable, and can achieve the purpose of rapid degradation after waste treatment.