22 results about "Reactive compatibilization" patented technology

The invention relates to the technical field of packaging materials, and discloses a high-barrier long-acting antibacterial composite environment-friendly packaging material and a preparation method thereof, and the high-barrier long-acting antibacterial composite environment-friendly packaging material is formed by compounding an inner-layer film, a middle-layer film and a surface-layer film. The inner-layer film is prepared from low-density polyethylene, metallocene linear low-density polyethylene and the like; the middle-layer film is a reactive compatibilization layer and comprises an ethylene-vinyl alcohol copolymer, polybutylene terephthalate adipate and a styrene glycidyl methacrylate copolymer, and compatibility and toughness are improved through an in-situ reaction; a surface film is a functional layer, phytic acid and bifunctional modified montmorillonite are utilized to construct a hybrid network, and the sedum sarmentosum extract and the chitosan quaternary ammonium salt are anchored. By adopting a step-by-step film preparation and hot-pressing compounding process, the obtained material has the characteristics of high barrier, high strength and long-acting bacteriostasis, and the glue-free compounding process is environment-friendly and safe.

The invention discloses a self-assembled spherical lignin particle (LN) / poly (butylene adipate-co-terephthalate) (PBAT) composite material and a preparation method thereof, and relates to the field of polymer composite materials. The preparation method comprises the following steps: preparing a ternary green deep eutectic solvent (DES) from choline chloride / 1, 4-butanediol / aluminum chloride according to a molar ratio of 25: 50: 1, extracting lignin from bamboo powder, and preparing self-assembled spherical lignin particles LN through an ethyl acetate emulsion solvent evaporation method; and carrying out melt blending on LN and PBAT according to a ratio of 5-20wt%: 95-80wt%, and carrying out panel vulcanization shaping to obtain the composite material. Lysine diisocyanate (LDI), comb-shaped SG or cage-shaped POSS can also be added as a reactive compatibilizer. The method is green and environment-friendly, the elasticity modulus of the prepared composite material can reach up to 125 MPa, the tensile strength can reach up to 30 MPa, and the composite material is excellent in ultraviolet resistance and aging resistance and suitable for the fields of green packaging and intelligent agricultural films.

The invention belongs to the technical field of compositions of high-molecular compounds, and relates to a high-barrier antibacterial rubber-plastic composite material and a preparation method thereof. The material is composed of 45%-65% of polyvinyl fluoride, 20%-35% of a bio-based polyester elastomer, 1.5%-4.0% of silver-loaded zirconium phosphate, 0.8%-2.5% of a bismaleimide compatibilizer and the balance of a processing aid. Wherein the side chain of the elastomer contains carboxyl or epoxy group, the elastomer and the polyvinyl fluoride form a covalent bond interface through in-situ reaction, and the antibacterial agent is anchored on the interface through silane coupling treatment. The preparation method comprises the steps of pretreatment, primary mixing, reactive extrusion and granulation molding. According to the invention, a bio-based polyester elastomer with reaction activity is introduced through molecular design, and a rubber-plastic composite material system with high barrier property, high toughness, long-acting antibacterial property and good processability is successfully constructed in combination with reactive compatibilization and interface directional anchoring antibacterial strategies; and a reliable material solution is provided for the fields of functional packaging, medical protective films, intelligent flexible devices and the like.

The invention provides a bio-based degradable foaming material and a preparation method thereof, and relates to the technical field of biodegradable materials. The invention aims to solve the problems that the existing PBAT / TPS foaming material is thick and large in foam hole, deteriorated in mechanical property, unstable in foaming process and the like due to poor interfacial compatibility and insufficient melt strength. According to the method, PBAT and TPS are used as matrixes, maleic anhydride grafted PBAT is added as a reactive compatibilizer, nanoparticles are added as a physical reinforcing and nucleating agent, and a chemical foaming agent AC and a catalyst ZnO are matched. The foaming material is prepared through a high-speed mixing and hot-pressing foaming one-step forming process. The composite material comprises the following raw materials in percentage by weight: 10-40% of TPS, 60-90% of PBAT, 1-5% of a foaming agent, 1-5% of a compatilizer, 0-3% of a catalyst and 0.5-5% of a nanoparticle nucleating agent. The prepared foaming material has high foaming ratio and good compression strength and rebound resilience, can be completely biodegraded, and is suitable for the fields of logistics packaging, electronic product protection and the like.

The invention relates to the technical field of high polymer material processing and biodegradable plastic, in particular to a preparation method of biodegradable polylactic acid plastic. The invention discloses a preparation method of biodegradable polylactic acid plastic. The polylactic acid plastic is composed of a polylactic acid matrix, an elastomer toughening phase, a nanocellulose enhancer, a reactive compatibilizer and a three-layer core-shell structure microencapsulated enzyme preparation. The preparation method comprises the steps of raw material pretreatment and master batch preparation, reactive melt blending, multi-stage hot stretching orientation and cooling forming, the microencapsulated enzyme preparation sequentially comprises a pH response layer, a temperature response layer and a polymer protection outer layer from inside to outside, and intelligent control over the material degradation behavior is achieved through a synergistic triggering mechanism. The product prepared by the invention has the characteristics of high tensile strength, high elongation at break, high impact strength, high thermal deformation temperature and controllable biodegradability, and effectively solves the technical problem that the toughness, heat resistance and controllable degradability of the polylactic acid material are difficult to consider at the same time.

This invention belongs to the field of knitted fabric technology, specifically relating to a breathable and UV-protective polyester fabric and its preparation method. The preparation method of the breathable and UV-protective polyester fabric includes: preparing an organic-inorganic hybrid composite modifier by in-situ polymerization of alkenyl-modified nano-zinc oxide, an organic UV absorber containing double bonds, and a hydroxyl-containing monomer; melt-blending and granulating this modifier with PET resin and polyethylene glycol diglycidyl ether to obtain a modified masterbatch; further blending with PET resin and melt-spinning to obtain FDY filaments; knitting to obtain a base fabric; and finally impregnating and heat-setting with a polyurethane finishing agent to obtain the finished fabric. This invention achieves nanoscale stable dispersion and long-lasting fixation of functional components in the fiber through chemical bonding and reactive compatibilization, endowing the fabric with highly efficient and broad-spectrum UV protection, excellent washability, and good breathability and moisture permeability, while also providing a soft and skin-friendly feel and excellent overall performance.

The invention relates to the technical field of high polymer material and fiber manufacturing, discloses a preparation method of a water-soluble polyester sea-island fiber, and aims to solve the problems of unstable spinning process and uneven fiber structure caused by weak interface bonding force of sea and island in the existing sea-island fiber preparation. According to the method, a synergistic system consisting of a latent catalyst, an acid trapping agent and a reactive compatibilizer containing hydrophilic ions and epoxy groups is introduced into a system containing ionic water-soluble copolyester (marine phase) and thermoplastic polyester (island phase). By controlling the temperature difference between the sea phase melt and the island phase melt, the latent catalyst is promoted to be decomposed at the two-phase interface, and the compatibilizer enriched at the interface is catalyzed in situ to generate grafting reaction, so that chemical bond connection is formed between the sea phase and the island phase. By constructing the stable chemical interface layer, the stability of the spinning process is remarkably improved, and the structural uniformity of the obtained fiber is improved.

The application discloses a microporous membrane and a preparation method thereof, and a separation membrane. The raw material for preparing the microporous membrane comprises the following components: 12-26% of polyolefin, 3-7% of a polymer pore-forming agent, 3-10% of a reactive compatibilizer, and 57-82% of a diluent. The reactive compatibilizer comprises at least one of a polar monomer grafted modified polyolefin, a polyolefin hydrolysis modifier, a polyolefin ionization modifier and a polyolefin sulfonation modifier. Through the synergistic effect of the components, a porous membrane structure with uniform pore size and excellent connectivity is finally formed. Meanwhile, the hydrophilic functional groups of the reactive compatibilizer anchored on the pore channel interface can be long-acting retained in the microporous membrane matrix, and the polyolefin microporous membrane is endowed with stable bulk hydrophilicity, so that the defects of traditional polyolefin microporous membranes, such as hydrophobicity and easy pollution, are solved, and the pure water flux and hydrophilic durability of the microporous membrane are greatly improved.

The invention discloses a preparation method and application of a full-biodegradable composite material with high bamboo fiber content, the composite material is prepared from a degradable resin matrix, fine bamboo powder, inorganic mineral filler, an interface modifier and a processing aid, the mesh number of the fine bamboo powder is 100-1200, and the filling amount can reach 60%. According to the invention, a reverse coating two-step process based on a continuous mixing technology is adopted: firstly, a melting additive is used for preferentially wetting bamboo powder to form a microcosmic skin-core structure master batch, and then dilution and reactive compatibilization are carried out through twin-screw extrusion. The calcium sulfate whiskers and the bamboo powder are introduced to construct a microscopic synergistic framework, and a double-peak particle size compounding technology is adopted, so that the problems that the high-content bamboo powder is difficult to disperse, easy to agglomerate and poor in processing fluidity in hydrophobic resin are effectively solved. The prepared material is low in cost and completely biodegradable, has high rigidity and high toughness, and is suitable for the fields of film blow molding, injection molding, sheet extrusion and the like.

The invention belongs to the field of food packaging materials, and particularly relates to a reactive compatibilization active polylactic acid packaging material as well as a preparation method and application thereof. The reactive compatibilization active antioxidant antibacterial polylactic acid material is prepared from polylactic acid, tannic acid and a polylactic acid and maleic anhydride grafted copolymer through blending and melt extrusion processes, and the polylactic acid and maleic anhydride grafted copolymer is prepared from polylactic acid, maleic anhydride and an initiator through blending and melt extrusion processes. The packaging film can be used for packaging food or flowers, effectively delaying browning, inhibiting microbial growth, maintaining hardness and quality and prolonging shelf life. The raw materials are green and degradable, the process is simple and continuous, the method is suitable for industrial production, and a new way is provided for development of active functional packaging.

The invention belongs to the technical field of high polymer materials, and particularly relates to a wear-resistant environment-friendly plastic for children's toys and a preparation method of the wear-resistant environment-friendly plastic for children's toys, and the wear-resistant environment-friendly plastic for children's toys comprises the following components: 100 parts of polylactic acid; 15 to 40 parts of polycaprolactone; 6-25 parts of a composite wear-resistant agent; 5 to 15 parts of a reactive compatibilizer; 0.2 to 1 part of an antioxidant; and 0.2 to 1 part of a lubricant. The preparation method of the wear-resistant environment-friendly plastic for the children's toys comprises the following steps: mixing the weighed materials at a high speed to obtain a uniform premix; the premix is subjected to melt blending extrusion, and the extruded material is subjected to water cooling, bracing, pelletizing and drying to obtain the wear-resistant environment-friendly plastic for the children's toys. The plastic disclosed by the invention can form a chemical bonding network in a polylactic acid and polycaprolactone blending system, and meanwhile, excellent wear resistance and impact resistance are realized.

This invention relates to the field of artificial turf technology, specifically to a high-strength artificial turf and its production method. The cross-section of the high-strength artificial turf, from the inside out, comprises a high-strength core layer, an interface-compatible transition layer, and a highly adhesive skin layer. The high-strength core layer comprises a polyamide copolymer, a thermotropic liquid crystal polymer, and nano-rigid particles, forming a multi-scale distributed in-situ microfiber reinforcement structure. The interface-compatible transition layer comprises polyolefin, polyamide, a dual-functional group graft, and a multi-functional group epoxy crosslinking agent. The highly adhesive skin layer comprises a polyolefin substrate, a polysiloxane-polyurethane block copolymer, and a dynamic covalent crosslinking agent. This invention, through a triple synergistic technology concept of high-strength core layer micro-nano hierarchical reinforcement, in-situ reactive compatibilization of the interface-compatible transition layer, and dynamic crosslinking self-healing of the highly adhesive skin layer, enables the turf to simultaneously achieve excellent levels in three key performance indicators: tensile strength, initial pull-out force, and pull-out force retention rate after damp heat aging.

The invention relates to the technical field of polyester degradable materials, in particular to a pasteurization-resistant non-stick milk packaging film based on polyester degradable plastics. According to the invention, the chaos mixing-reactive compatibilization synergistic online thermal annealing process is adopted, so that the problems of low strength and high brittleness of conventional polyester melt are solved, and the balance of rigidity and toughness of the material is realized; by combining asymmetric surface modification and an interlayer reactive compatibilization system, the problems of contradiction between smoothness of an inner layer and adhesion of an outer layer and weak interlayer binding force are solved; dispersion of the inorganic nano-filler is optimized through a compatibilization system, and the conflict between addition of the functional filler and optical transparency is solved; the coarse structure of the inner layer is cooperated with a migration biological water repellent agent and an on-line rapid crystallization process, so that the extreme liquid repellency and the high-temperature size stability are realized, the pasteurization requirement is met, and food residues and packaging failure are avoided.

The invention discloses a high-toughness heat-resistant full-biodegradable composite material Pick ball and a preparation method thereof. The invention discloses a high-toughness heat-resistant full-biodegradable composite material Pick ball. The material is prepared from the following raw materials in parts by weight through the steps of raw material drying, reactive blending, injection molding and sphere welding: 50-75 parts of polylactic acid, 20-45 parts of poly (adipic acid) / butylene terephthalate, 0.1-3 parts of an epoxy functionalized chain extender, 2-10 parts of a biomass reinforcing filler, 0.1-2 parts of a nucleating agent and 0.1-1 part of an anti-hydrolysis agent. According to the invention, PBAT is used for replacing PPC, and the nucleating agent is combined to promote rapid crystallization of PLA, so that the Vicat softening temperature of the Pick ball exceeds 100 DEG C, and the high-temperature rebound stability is improved; in-situ reactive compatibilization of PLA and PBAT is realized through an epoxy functionalized chain extender, and a micron-sized sea island structure is constructed in combination with MFI difference value control, so that the impact toughness and durability are greatly improved; the high-length-diameter-ratio biomass reinforcing filler is adopted, the density is low, the efficiency is improved, the sphere is endowed with better hand feeling and flight performance, 100% biomass sources are adopted, and the environment friendliness is better.

The present application relates to high voltage and ultra-high voltage power cable insulation material and cable manufacturing technical field, concretely relates to a kind of electrical insulation cable and preparation method thereof.The present application discloses a kind of electrical insulation cable and preparation method thereof, the cable includes conductor, conductor shield layer, insulation layer, insulation shield layer and sheath layer, the surface of conductor is equipped with micron level annular groove that can adapt to different line diameter, conductor shield layer fills groove and forms embedded anchor, and realizes interface fusion with insulation layer by homologous material.Insulation material includes polypropylene, polyolefin elastomer, reactive compatibilizer, functionalized nanohybrid particle, reactive voltage stabilizer and antioxidant, functionalized nanohybrid particle is hexagonal boron nitride as core, polydopamine as intermediate layer, and beta nucleating agent as functional layer.The present application is enhanced by embedded anchor and chemical anchor, and the interface bonding strength and operation reliability of cable are improved.

The application discloses a preparation method of an ultraviolet-resistant photovoltaic PVC pipe and relates to the field of plastic part preparation. The preparation method specifically comprises the following steps: preparing dry mixed materials a, b, c and d according to dry mixed material bases; the dry mixed material a comprises a conductive agent, the dry mixed material c comprises a reactive compatibilizer, and the dry mixed material d comprises an ultraviolet shielding agent; the dry mixed materials a and b are respectively melted and then co-extruded to obtain a base pipe a with a double-layer structure; then, hot melt adhesive is coated on the surface of the base pipe a to obtain a base pipe b; melt c and melt d comprising mixed liquids are respectively obtained according to the dry mixed materials c and d; then, the melt c and the melt d are sequentially coated on the surface of the base pipe b in a co-extrusion mode to obtain a composite pipe blank a; and the composite pipe blank a is sequentially subjected to high-temperature treatment, cooling and setting and post-treatment to obtain the ultraviolet-resistant photovoltaic PVC pipe. The application solves the problems of insufficient interlayer bonding force and mismatched thermal expansion coefficients.

The application discloses a composite film for polycrystalline silicon packaging, which is formed by one-time co-extrusion of an inner contact layer, a middle barrier layer and an outer protective layer; the inner contact layer is composed of low-density polyethylene, phosphotungstic acid nanoparticles and amino silane coupling agent; the middle barrier layer is composed of ethylene-vinyl alcohol copolymer, maleic anhydride grafted polyethylene, nano montmorillonite and alkyl quaternary ammonium salt; and the outer protective layer is composed of polylactic acid, nano kaolin, nano cellulose and 2-octenyl succinic anhydride. The composite film realizes high and persistent cleanliness by adopting reactive compatibilization co-extrusion.

The invention provides a bio-based flame-retardant toughening agent as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a bio-based intermediate AA from arginine and amino trimethylene phosphonic acid through an ionic reaction; then, AA and tannic acid react in a water phase, the hydroxyl content and the P / N ratio of a product are controlled by adjusting the mass ratio of AA to TA, and a flame retardant AT is prepared; and finally, blending AT and the epoxy modifier through a solvent to prepare the bio-based flame-retardant toughening agent. The prepared bio-based flame-retardant toughening agent integrates flame-retardant, toughening and reactive compatibilization functions and is introduced into a polylactic acid (PLA) matrix, dynamic vulcanization is achieved through molecular-level synergistic integration of a phenol structure, reactive compatibilization is achieved through an epoxy group, and the synergistic flame-retardant effect of P / N is achieved. In conclusion, the defects of flammability and intrinsic brittleness of the polylactic acid composite material are effectively overcome, the raw materials are green and renewable, and the polylactic acid composite material has a good application prospect.

The invention relates to the technical field of hot melt adhesives, in particular to an oil-resistant and heat-resistant hot melt adhesive for an end cover of an automobile filter and a preparation method of the hot melt adhesive. The hot melt adhesive is mainly prepared from the following components in parts by mass: 1000 parts of copolyamide hot melt adhesive resin, 120-180 parts of maleic anhydride grafted ethylene propylene diene monomer, silanized zinc oxide composite powder preloaded by two types of stearic acid in a specific proportion, zinc stearate and an antioxidant. The preparation method comprises the following steps: preparing the modified rubber and the functional filler, and carrying out melt blending on the modified rubber and the functional filler and resin under specific process conditions. Through the synergistic effect of the reactive compatibilization and the functional filler, the problems that a traditional pouring sealant is prone to thermal creep, swelling and interface adhesion attenuation under long-term soaking of high temperature and hot oil in an engine compartment are solved, and the hot melt adhesive is endowed with excellent high-temperature creep resistance, oil resistance and aging resistance.

The invention relates to the technical field of biodegradable material processing, and discloses a functional full-biodegradable mulching film with a multi-layer composite structure and a preparation method thereof, the mulching film has a three-layer co-extrusion structure, and an outer layer and an inner layer take poly (adipic acid) / butylene terephthalate resin as a matrix; the core layer comprises poly (butylene adipate / terephthalate), polypropylene carbonate, surface-activated fine plant fibers, a reactive compatibilizer containing an epoxy group and an endothermic foaming agent. According to the preparation method, a differential temperature co-extrusion process is adopted, the extrusion temperature of the core layer is set to be higher than that of the outer layer and the inner layer, and a compatibilizer at an interface is activated by temperature difference to initiate a chemical bonding reaction between the core layer and the surface layer. According to the invention, through cooperation of in-situ reaction compatibilization and micro-foaming technologies, the technical problems of mechanical property reduction and interlayer stripping of the high-filling mulching film are solved, and low cost, light weight and high strength of the mulching film are realized.

The invention relates to the technical field of high polymer materials, in particular to a preparation method of a reactive compatibilization-crosslinking type PMMA / PC optical composite material, which comprises the following steps: mixing a PMMA matrix, a PC matrix, a reactive compatibilizer, an ultraviolet light crosslinking agent, an antioxidant and an ultraviolet absorbent in proportion; fully and uniformly mixing by a high-speed stirrer; extruding and granulating through a double-screw extruder, and preparing a standard sample sheet through extrusion casting; and carrying out ultraviolet irradiation reaction on the standard sample wafer to obtain the reactive compatibilization-crosslinking PMMA / PC optical composite material. A traditional PMMA / PC blend is poor in compatibility, so that a phase separation structure is caused, the haze is increased, and the light transmittance is reduced.