124025 results about "Polymer chemistry" patented technology

An organic molecule is disclosed comprising:a first chemical moiety with a structure of formula I,andtwo second chemical moieties, each at each occurrence independently from another consisting of a structure of formula II,wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

To provide a laminate, a tube container and a tube container with a cap capable of improving recyclability while maintaining a desired performance.SOLUTION: There is provided a laminate 10 which has a first sealant layer 11 constituting an outer surface 101, a second sealant layer 12 constituting an inner surface 102, a base material layer 13 provided between the first sealant layer 11 and the second sealant layer 12 and a barrier layer 17 provided between the first sealant layer 11 and the base material layer 13 or between the base material layer 13 and the second sealant layer 12. The first sealant layer 11 and the second sealant layer 12 each contain an unstretched polypropylene resin having a density of 0.88 g / cm3 or moe and 0.90 g / cm3 or less. The base material layer 13 is a stretched polypropylene film. The barrier layer 17 is a vapor deposition layer composed of an inorganic oxide.SELECTED DRAWING: Figure 2A

The invention relates to the field of matt films, in particular to a BOPP matt film suitable for a direct coating process and a preparation method of the BOPP matt film. The BOPP matt film suitable for the direct coating process comprises an upper surface layer, a middle core layer and a lower surface layer which are sequentially arranged, the upper surface layer is an extinction layer and comprises polypropylene random copolymer, 40-51 wt% of high-density polyethylene, 2-3 wt% of n-alkyl chain modified hyperbranched polyester and 5-8 wt% of maleic anhydride-styrene melt grafted polypropylene random copolymer; the middle core layer comprises homo-polypropylene; and the lower surface layer comprises homo-polypropylene. According to the matt film, the roughness of the matt layer can be improved by optimizing the components of the matt layer, the problem of whitening'hard spots' on the surface of the matt film in a direct coating process is solved, and then the quality of a coated matt film product is improved, so that the appearance quality of products such as laminated paper, paper boxes and labels which are subsequently laminated is ensured.

A composite can include cellulose fiber and foam binding the cellulose fiber. A method for manufacturing a composite can comprise mixing a plurality of ingredients to form a pre-foam mixture, foaming the pre-foam mixture to produce a foam, mixing the foam with cellulose fiber to form a composite material, and curing the composite material.

The invention relates to the field of preparation of novel compounds, and discloses a glycoside group-containing compound as well as a preparation method and application thereof. The glycoside group-containing compound has a structure as shown in a formula (1). The polymer obtained by polymerizing the compound can improve the water-drive recovery efficiency of conventional oil reservoirs and common heavy oil reservoirs. # imgabs0 #

A graphene-infused fabric is provided as a sound reducing acoustic layer for object such as a pickleball paddle. The graphene-infused fabric is made from polymer fibers, at least one of which is a graphene-infused polymer fiber. Graphene is blended into a polymer material, and fibers are manufactured from said material such as by extrusion. The graphene-infused polymer is combined with other fibers to be made into a woven or non-woven fabric.

The invention relates to the field of electric heating materials, and provides a graphene-based heating coating and a preparation method thereof. The coating is prepared from functionalized graphene, a surface modified bismuth telluride nanobelt, polyaniline, bisphenol A epoxy acrylate, polyurethane acrylate, a dispersing agent, a flatting agent, a silane coupling agent, a defoaming agent and a propylene glycol methyl ether acetate / N-methyl pyrrolidone mixed solvent. The functionalized graphene is obtained by modifying a hyperbranched polyolefin-acryloyl-POSS copolymer, and carrying out ultrasonic stripping, centrifugal separation, gradient washing and vacuum drying; the surface-modified bismuth telluride nanobelt is modified by an amino silane coupling agent, so that the interfacial compatibility is improved. The preparation method comprises the steps of solvent premixing, nanofiller dispersion, ultrasonic homogenization, coupling agent modification, ultraviolet curing and thermocuring. The heating coating provided by the invention has high conductivity, excellent thermal stability and adhesive force, and can be widely applied to heating electric appliances and intelligent temperature control equipment.

The invention provides a polymer additive and application thereof. The polymer additive is prepared from the following components in parts by mass: 30 to 90 parts of diethyl phosphinate, 0.01 to 3 parts of ethyl phosphonate, 5 to 67 parts of dialkyl phosphinate and 0.01 to 5.5 parts of alkyl phosphinate. The dialkyl phosphinate has a structure as shown in a formula I, and the alkyl phosphinate has a structure as shown in a formula II. According to the invention, through design and compounding synergy of various phosphonates, the flame-retardant effect can be obviously improved, so that the polymer additive has excellent and efficient flame retardance. The polymer additive is used in a polymer material, and a polymer composition containing the polymer additive can have excellent flame retardant property, good toughness, high impact strength and excellent mechanical property and humidity and heat resistance under the condition that the addition amount is small.

One aspect is a method for producing a first intermediate product. A feedstock is provided that comprises a first polyester. The first polyester is contacted with a further organic compound in a volume section V3 to obtain a further initial mixture. A weight average molar mass of the first polyester is reduced in the volume section V3 to obtain a first intermediate mixture. The first intermediate mixture comprises a first intermediate product and the further organic compound. First particulated material is added to the first intermediate mixture in a volume section V4. A filtering means is pre-coated with the first particulated material. At least one impurity is at least partially removed from the first intermediate mixture using the filtering means. The first particulated material has a median pore diameter in the range of 5 mm to 20 mm.

The invention discloses a pure bio-based polyhydroxyalkanoate adhesive as well as preparation and application thereof, and belongs to the technical field of degradable adhesives. According to the adhesive, polyhydroxybutyrate valerate or polyhydroxybutyrate hexanoate is used as a matrix, and the acid value reaches 2-15 mg KOH / g through molten end group activation; a reactive emulsifier with a hydrophilic-lipophilic balance value of 9-12 is introduced into a water phase, and the stable aqueous dispersion is prepared through phase inversion high-shear emulsification. The Z-average particle size of the dispersion is 0.12-0.30 [mu] m, and the content of the free surfactant is not higher than 30wt%. After the tackifying resin, the plasticizer and the vegetable wax are compounded, the bio-based carbon content of the obtained adhesive is not lower than 95%, and the volatile organic compound content is not higher than 100 mg / kg. The paper / paper heat sealing strength of the adhesive is not lower than 7.0 N / 15mm, the 180-degree peel strength is not lower than 7.5 N / 25mm, and the adhesive can pass repulping evaluation.

The invention belongs to the technical field of fiber materials, and particularly relates to a modified aramid nanofiber as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing an aramid nanofiber dispersion liquid; (2) modifying the aramid nanofiber by using POSS; and (3) carrying out in-situ polymerization on polypyrrole on the surface of the aramid nanofiber. POSS (polyhedral oligomeric silsesquioxane) has a relatively large volume exclusion effect, the template effect of long-chain alkyl quaternary ammonium salt can be influenced by scattered adhesion of POSS on the surface of aramid nanofiber, uneven polymerization of pyrrole monomers is caused, and formation of a rough structure on the surface of the fiber is facilitated. According to the invention, the polypyrrole-coated aramid nanofiber with a coarse structure is used as a polyolefin modified material, so that the problem of low interfacial force existing in a common filler is solved, and the polyolefin resin composite material with high strength and antistatic property is obtained and can be widely applied to the fields of pipes, plates, grouting equipment parts, grouting bags and the like.

One aspect is a method for producing a first intermediate product. A feedstock is provided that comprises a first polyester. The first polyester is contacted with a further amount of a first organic compound in a volume section V2. At least one impurity is present in the volume section V2, and the volume section V2 has a first zone and a further zone. The first polyester is contacted with a further organic compound in a volume section V3 to obtain a further initial mixture. A weight average molar mass of the first polyester is reduced in the volume section V3 to obtain a first intermediate mixture. The first intermediate mixture comprisesa first intermediate product; andthe further organic compound.A relative ratio of a particle count per area of the at least one impurity in the first zone to a particle count per area of the at least one impurity in the further zone is equal to or greater than 10.

The invention belongs to the technical field of polymer preparation, and particularly relates to a curved-surface polyaniline modified 3D printing polyurethane material and application thereof. According to the preparation method, an ice crystal hard template method and a polyether glycol soft template method are combined, so that the microstructure of polyaniline is adjusted, and the curved polyaniline with regular morphology is prepared. The curved-surface arc-shaped structure has a large specific surface area, can form more contact sites with resin when being directly melt-blended with the resin, is beneficial to construction of a conductive path, and is not easy to agglomerate due to the curved-surface structure. The polyaniline with the arc-shaped structure is of a three-dimensional space structure and is directly blended with the resin to form a randomly arranged conductive network structure, so that the composite material is not easy to break when being impacted, and can be better embedded between the resin to form a stress transfer channel, and a complex three-dimensional network structure is constructed; the mechanical property and the antistatic capability of the product are improved.

The invention discloses high-toughness ultra-high performance concrete and a preparation method thereof, and relates to the technical field of polymer modified materials thereof. The concrete is composed of a cementitious material composite system, a fiber-reinforced system and a polymer modifier, the cementitious material comprises Portland cement, nano-silica, a rice hull ash-based auxiliary cementitious material and gradient grading quartz powder, and the fiber system adopts steel fiber / basalt fiber / polypropylene fiber multi-scale composite reinforcement. And a polyurethane emulsion interface modifier is matched. During preparation, a dry mixing-fiber dispersion-wet mixing three-stage process is combined with a microfluidization emulsification and segmented polymerization technology, so that uniform dispersion of fibers and matrix-fiber interface reinforcement are realized. The scheme has high strength, high toughness and industrial feasibility, and is suitable for harsh engineering scenes such as bridge joints and explosion-proof structures.

The invention discloses a high-bio-based PHA-acrylate emulsion paint as well as a preparation method and application thereof, and belongs to the technical field of water-based paints. The film former of the latex paint comprises 60% to 90% of polyhydroxyalkanoate (PHA) with a moderate crystallinity of 40% to 60%, and 10% to 40% of a specific bio-based acrylate copolymer with a Tg of not higher than 5 DEG C. According to the invention, a core-shell microstructure in which a rigid PHA phase is wrapped by a flexible acrylate phase is constructed through a key process including ultrasonic treatment. According to the structure, low-temperature film forming can be achieved without a VOC coalescing agent, the bio-based content of an obtained paint film is higher than 70%, the VOC content is lower than 0.5 g / L, the scrub resistance is larger than 7000 times, and the technical problem that high bio-based content and high performance of a PHA coating are difficult to achieve at the same time is solved.

An internally reinforced thermoplastic container has a body manufactured using rotational molding. Prior to molding, attachment elements are releasably attached to the interior surface of parts of a mold, and an initially separate tension member is connected between the attachment elements. The mold is closed and a body of the container molded such that the attachment elements are integrated into the walls of the body. After molding, the attachment elements are released from the mold. The attachment elements and the tension member define a tension structure to resist outward bulging of the container walls. The tension member may be tensioned prior to or after molding of the container body. The attachment elements may take the form of eyelets having a base incorporated into the wall of the container body. The method enables the formation of a hollow thermoplastic container with integrally formed internal reinforcement.

The invention provides a photosensitive resin composition containing a photobleaching aminomethyl anthracene photosensitizer and application thereof.The structural main body anthracene ring of the photosensitizer introduces an aminomethyl functional group to the 9th and / or 10th site: through introduction of the aminomethyl functional group, while the electron cloud density of polycyclic aromatic hydrocarbon is maintained, the maximum absorption wavelength is subjected to red shift, and the photosensitive resin composition is especially suitable for a 405nm illumination system; the initiation efficiency is obviously improved; the exposure energy is reduced; compared with an existing DBA type photoinitiator, the problem of alkoxy carbon-oxygen bond breakage caused by p-pi conjugation of DBA is avoided, generation of small molecule fragments is effectively inhibited, defects are reduced, and the yield is increased. In addition, compared with DPHA and DAcOA, the photosensitizer also shows better solubility and formula compatibility. The preparation method has the characteristics of simple preparation process and low cost, and can be widely applied to the photocuring fields of dry films, paints, coatings, printing inks, forming materials and the like.

To provide a new technique, related to a workpiece processing preparation method before thinning processing, and a workpiece processing method prepared by the same.SOLUTION: A workpiece processing preparation method includes a first resin supply step of laying a first resin on a sheet S, a resin layer formation step of pressing a first plate-like object and solidifying the first resin, then peeling the first plate-like object, and forming a first resin layer 31, a plate-like object installation step of installing a second plate-like object 20 on the upper surface of the first resin layer 31, a second resin supply step of laying a resin 25 on the second plate-like object 20, a second laminate formation step of making a plate-like workpiece W face the resin 25 laid on the upper surface of the second plate-like object 20, pressing and integrating the workpiece W and the resin 25, solidifying the resin 25 by external stimulation, and forming a second laminate 42, and a third laminate formation step of removing the first resin layer 31 and the sheet S from the second laminate 42, and forming a third laminate.SELECTED DRAWING: Figure 5

The invention discloses spherical aluminum oxide and a silicone rubber heat conduction composite material thereof, and belongs to the technical field of functional polymer materials. The spherical aluminum oxide is subjected to surface modification through an amphiphilic fluorosilicone heat conduction interface synergist; comprising the following raw materials in parts by weight: 100-200 parts of vinyl silicone oil, 1-6 parts of side hydrogen-containing silicone oil, 1-6 parts of end hydrogen-containing silicone oil, 0.2-2 parts of a platinum catalyst, 0.01-0.1 part of an inhibitor and 2500-6000 parts of amphiphilic fluorine-silicon heat-conducting interface synergistic spherical aluminum oxide powder. Through surface modification of spherical aluminum oxide, the prepared silicone rubber heat-conducting composite material realizes synergistic gain of heat conduction, insulation and flexibility, and can meet the requirements of multiple fields such as power battery pack heat dissipation gaskets, high-frequency circuit packaging and wearable equipment.

The invention relates to the technical field of low-dielectric heat-conducting functional materials, in particular to a nano silicone rubber composite material as well as a preparation method and application thereof. According to the preparation method, a modified vinyl silsesquioxane coupling agent is taken as a bridge, and boron nitride nanosheets, silicon carbide nanowires and the modified vinyl silsesquioxane coupling agent are covalently connected through hydrolysis reaction, so that a heterostructure is constructed, and the nano heat-conducting filler is obtained; the preparation method comprises the following steps: dispersing a nano heat-conducting filler in vinyl silicone oil, and constructing a covalent cross-linked network through addition cross-linking reaction and curing treatment to obtain the nano composite silicone rubber material. According to the processing method, the filling amount, the dielectric constant and the dielectric loss can be reduced, meanwhile, the heat conduction capacity is improved, and the problems that in the prior art, the dielectric constant and the dielectric loss are low due to simple mixing of the boron nitride nanosheets and the silicon carbide nanowires are solved.

The invention discloses a PHA / PVA nano-scale paper-based barrier emulsion as well as a preparation method and application thereof. The water-based emulsion comprises PHA particles with the average particle size ranging from 100 nanometers to 300 nanometers and PVA, the PHA and the PVA are blended according to a specific proportion, and the PVA serves as a main film forming component and a barrier property contribution component and is blended with the PHA to form the nano-emulsion. The preparation method comprises the following steps: mixing PHA particles with an initial average particle size of 1-100 microns with a PVA aqueous solution, and carrying out high-pressure homogenization and other nanocrystallization means to obtain the nano-emulsion. The emulsion can be coated on the surfaces of paper-based materials such as paper and paperboards, and a barrier coating is formed after the emulsion is dried. The obtained emulsion is small in particle size, good in stability and good in leveling property, a uniform and compact barrier film is easily formed on a paper base, the film has excellent water vapor, oxygen and grease barrier performance, and the material is bio-based, biodegradable and environmentally friendly.

The present invention is used in the technical field of functional textile materials. Disclosed are a composite fiber-based protective material, and a preparation method therefor and the use thereof. The composite fiber-based protective material comprises a unidirectional moisture-guiding fiber membrane, a bacteriostatic sweat-absorbing layer and a waterproof moisture-permeable membrane, which are sequentially stacked, wherein the unidirectional moisture-guiding fiber membrane comprises a hydrophobic fiber membrane and a hydrophilic fiber membrane sandwiched between the hydrophobic fiber membrane and the bacteriostatic sweat-absorbing layer, and the average pore size of the hydrophobic fiber membrane is larger than the average pore size of the hydrophilic fiber membrane. The average pore size of the hydrophobic fiber membrane is 10-18 μm; and the average pore size of the hydrophilic fiber membrane is 1.0-2.3 μm. The composite fiber-based protective material is prepared from the unidirectional moisture-guiding fiber membrane, the bacteriostatic sweat-absorbing layer and the waterproof moisture-permeable membrane by means of a lamination process. In addition to waterproofness and moisture penetrability, the composite fiber-based protective material also has biodegradability and a bacteriostatic effect.

The invention discloses a metallocene polyethylene material, a composite mulching film and a preparation method thereof, and the metallocene polyethylene material comprises the following raw materials by mass: 75-85 parts of metallocene polyethylene resin, 15-25 parts of high density polyethylene, 0.05-0.2 part of a main antioxidant, 0.1-0.25 part of an auxiliary antioxidant, 1-2 parts of silane coupling agent modified nano zinc oxide, and 1-2 parts of silane coupling agent modified mica powder. And 0.05 to 0.2 part of a slipping agent. The prepared metallocene polyethylene composition has the advantages of excellent processability, tensile strength, mechanical strength, aging resistance and the like.

Disclosed in the present invention are a PET release film base film having low surface roughness and a preparation method therefor. The release film base film comprises three layers which are stacked: a core layer and two surface layers located on both sides of the core layer. The release film base film is obtained via three-layer co-extrusion by means of taking an auxiliary extrusion resin as a raw material of the two surface layers and a primary extrusion resin as a raw material of the core layer; the auxiliary extrusion resin is obtained by mixing an anti-blocking agent PET masterbatch and a PET base material in a mass ratio of 1:5-1:15; and the primary extrusion resin is a pure PET base material. The release film base film of the present invention has low surface roughness, low haze and excellent overall performance. Since large-particle benzoic acid-modified nano aluminum oxide has the refractive index very close to that of PET base films, the present invention can effectively avoid adverse visual impacts caused by a difference in the refractive index at interfaces between nanoparticles having large particle diameters and resin matrixes, thus effectively reducing the haze.

A coating composition comprises: a fluoro-aliphatic group-containing copolymer comprising a repeating unit A corresponding to a fluoro-aliphatic group-containing monomer, and a repeating unit B corresponding to at least one monomer, wherein each of the I / O values of said at least one monomer constituting the repeating unit B is 1.0 or less.

This application relates to an EPP material and a folding mat using this EPP material, which relates to the field of EPP material technology. The EPP material is formed into a plate by welding EPP particles, and the surface of the plate is coated with a hydrophobic antibacterial paint. The raw materials for preparing the EPP particles include 80-100 parts by weight of polypropylene resin, 1-3 parts by weight of a nucleating agent, 6-8 parts by weight of a modified graphene composite material, 5-10 parts by weight of a flame retardant, 5-15 parts by weight of a reinforcing agent, and 0.5-1.5 parts by weight of a surfactant. The raw materials for preparing the modified graphene composite material include hydrophobic modified graphene oxide, hydrophobic antibacterial nano-zinc oxide, and a modified ammonium polyphosphate coupling agent. The folding mat using this EPP material includes an EPP material, a surface layer, and a sewing thread, and the surface layer and the EPP material are fixedly connected by the sewing thread. This application has the effect of improving the flame retardancy, waterproofness, and antibacterial properties of EPP material, and the resulting tatami mat is environmentally friendly, comfortable, and has a good user experience.

An ink jet textile printing method according to one embodiment of the present disclosure includes a reaction solution attaching step of attaching a reaction solution containing an aggregating agent that aggregates components in an ink, and water to a fabric using an ink jet method, a transparent ink attaching step of attaching a transparent ink composition containing anionic resin particles and water to a fabric using the ink jet method, and a colored ink attaching step of attaching a colored ink composition containing a pigment, resin particles, and water onto a region, to which the transparent ink composition is attached, using the ink jet method, in which the reaction solution attaching step and the transparent ink attaching step include Step 1, and in Step 1, a range of a minimum value of a total attachment amount of the reaction solution and the transparent ink composition per unit area / per unit time is 34 mg / (s·inch2) or more, Step 1: applying the reaction solution and the transparent ink composition to the same region in the fabric in a single scanning of an ink jet head.

An antenna assembly may include a housing including a radome having at least an outer layer made of a melt-processable fluoropolymer material. The antenna assembly may further include an antenna system disposed within the housing.

The application pertains to an artificial turf monofilament comprising a sheath comprising a virgin polyolefin polymer, a core comprising recycled polyolefin polymer obtained from recycled artificial turf. Furthermore, the application pertains to an artificial turf comprising said monofilament as well as a process for manufacturing said monofilament.

The invention discloses an embolism part for peripheral arteriovenous vessels, the embolism part comprises an anchoring part and a blocking part fixedly connected with the anchoring part, the blocking part adopts polyurethane shape memory foam, the expansion rate of the polyurethane shape memory foam is 50-100 times, and a preparation method of the polyurethane shape memory foam comprises the following steps: step 1, preparing a polyurethane shape memory foam material; the preparation method comprises the following steps: preparing a polyurethane acrylate prepolymer from macromolecular polyol, diisocyanate, a chain extender containing disulfide bonds, other micromolecular chain extenders and an acrylate end-capping reagent; and 2, uniformly mixing the polyurethane acrylate prepolymer, a foaming agent, a foaming promoter and a photoinitiator to obtain a foaming solution, and sequentially carrying out light curing and foaming on the foaming solution to obtain the polyurethane shape memory foam. According to the embolism part, the polyurethane shape memory foam is adopted as the blocking part, the blocking part applies radial acting force to the wall of the blood vessel all the time based on the expansion trend of the blocking part, and the blocking part and the anchoring part jointly act and can be stably maintained in the blood vessel.