424 results about "Polymer architecture" patented technology

The invention relates to a preparation method of a high-hardness and high-sulfate-radical water quality scale inhibitor, and belongs to the technical field of water treatment.The preparation method comprises the steps that sodium carboxymethyl cellulose-sulfur quantum dots are prepared by using carboxymethyl cellulose as a stabilizer and then subjected to a copolymerization reaction with 2-acrylamido-2-methylpropanesulfonic acid and itaconic acid, and the high-hardness and high-sulfate-radical water quality scale inhibitor is obtained. The preparation method comprises the following steps: carrying out a reaction on sodium carboxymethyl cellulose and sulfur quantum dots to obtain modified sodium carboxymethyl cellulose-sulfur quantum dots, and carrying out a reaction on polysuccinimide, 4-amino phthalic acid and 2-aminoethanesulfonic acid to obtain a polyaspartic acid derivative; the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative are mixed to serve as the scale inhibitor, the scale inhibition rate of the scale inhibitor is remarkably increased through the synergistic effect of the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative, and meanwhile, due to the fact that a large number of new hydrogen bonds are generated between the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative, the scale inhibition rate of the scale inhibitor is increased. The stability of a polymer structure is improved, so that the temperature resistance of the scale inhibitor is improved. The scale inhibitor is green and environment-friendly, and has excellent scale inhibition efficiency on high-hardness and high-sulfate-radical water.

According to the anion exchange polymer, the anion exchange membrane, the method and the device provided by the invention, a cationic group with high alkali resistance is introduced into a polyaryl polymer structure, and meanwhile, a cationic side chain is introduced, so that the ionic conductivity and the alkali-resistant stability of the anion exchange polymer are synchronously improved; the anion exchange membrane prepared from the anion exchange polymer has the advantages of excellent ionic conductivity and alkali-resistant stability, can stably operate for a long time in a high pH value environment, and is not easy to degrade or reduce the performance. Therefore, the anion exchange membrane has remarkable advantages in electrochemical processes such as water electrolysis hydrogen production, so that the anion exchange membrane has a wide application prospect in electrochemical devices such as a water electrolysis reactor and the like.

A user support includes a hood structure that is supported by a back frame structure of the user support. The hood structure may comprise a one-piece homogeneous polymer structure that is formed by an additive process. The hood structure may include solid structures and at least one porous lattice matrix that is integrally formed with the solid structures.

The invention relates to a diamond wire saw sanding additive and a preparation method and application thereof, the diamond wire saw sanding additive is a polymer with the weight-average molecular weight (Mw) of 1000-7000, and the diamond wire saw sanding additive is shown as a structural formula (I) or a structural formula (II), in the formula I, R1 and R2 are-CH3,-CH2CH3,-CH2CH2CH3 and-CH2CH2CH2CH3 respectively, and n and m are independently 2-30; in the formula II, R3 is H,-CH3,-CH2CH3,-CH2CH2CH3 or-CH2CH2CH2CH3, and z is 1 or 2. In the sanding process of the carborundum activated by the additive, the production speed of a fretsaw can be remarkably increased under the condition that the product quality requirements that the cutting rate is 120-150 grains / mm, the height is larger than 3.8 microns, the breaking force is larger than 5.5 N and the stacking diameter is smaller than 12 microns can be met. And the speed can be increased from 30m / min without addition of the additive to 60m / min or above at most, so that the production efficiency is obviously improved.

Methods include pumping a fracturing pad fluid into a subterranean formation under conditions of sufficient rate and pressure to create at least one fracture in the subterranean formation, the fracturing pad fluid including a carrier fluid and a plurality of bridging particles, the bridging particles forming a bridge in a fracture tip of a far field region of the formation. Methods further include forming a first plurality of fibers in situ into the subterranean formation to form a low permeability plug with the bridging particles, and pumping a proppant fluid comprising a plurality of proppant particles.

The invention discloses a preparation method of alkyl modified silicone oil single-phase immersed coolant and application of the alkyl modified silicone oil single-phase immersed coolant in data center cooling, and belongs to the technical field of coolants.The preparation method comprises the steps that firstly, long-chain alpha olefin is used for modifying tetramethylcyclotetrasiloxane to obtain long-chain alkyl tetramethylcyclotetrasiloxane; then, long-chain alkyl tetramethyl cyclotetrasiloxane and octamethyl cyclotetrasiloxane serve as monomers, modified double-long-chain alkyl tetramethyl disiloxane serves as an end-capping reagent, copolymerization is conducted, and the long-chain alkyl end-capped single-long-chain alkyl monomethyl siloxane / dimethyl siloxane copolymer is obtained. By adopting the method disclosed by the invention, a copolymer product with relatively low steric hindrance can be prepared, a side chain alkyl group and a polymer structure can be accurately regulated and controlled, silicon-hydrogen bonds and olefin are not remained in the obtained product, and the product can be used as a single-phase cooling liquid of an immersed liquid cooling system of a data center to be applied to immersed cooling of the data center and has a wide application prospect.

A 3D printed, complex polymer structure can include a seed layer on the polymer structure. A thin film can be disposed on the seed layer. The seed layer can be an oxide, a nitride, or an oxynitride. The thin film can be an oxide, dielectric, semiconductor, or conductor. The polymer structure can be a lattice structure, cantilever, beam, or other shapes.

The invention relates to a composition for use in a manufacture of paper, board or the like. The composition comprises a mixture of cationic starch having amylopectin content of at least 85%, and an amphoteric polymeric structure comprising structural units originating from non-ionic monomers, preferably (meth)acrylamide, anionic groups and cationic groups, the polymeric structure comprising cationic groups at least 0.2 mol-%.

The invention discloses a polymer structural formula identification method and system, electronic equipment and a storage medium, and belongs to the technical field of image analysis technologies. The polymer structural formula identification method comprises the following steps: acquiring a training sample from a data set; inputting the training sample into a visual large language model, and updating model parameters of the visual large language model by using a loss function so as to iteratively train the visual large language model; wherein the visual large language model comprises a visual encoder, a text encoder, an alignment module and a full-connection neural network; the trained visual large language model is deployed; and if a recognition task is received, determining an unknown polymer chemical structure image corresponding to the recognition task, and generating an SMILES character string of a polymer structural formula of the unknown polymer chemical structure image by using the visual big language model. According to the invention, the structural formula of the polymer can be efficiently and accurately identified from the image.

The invention discloses a coinitiator-added gold nanocluster photoresist and a method, and belongs to the technical field of micro-nano processing and manufacturing and photosensitive materials. The photoresist comprises the following components in percentage by mass: 0.01 wt%-30 wt% of gold nanoclusters, 1 wt%-10 wt% of a coinitiator, 95 wt%-70 wt% of a polymerization active monomer and 0.1 wt%-5 wt% of an organic solvent, and the coinitiator is mercaptan or amine. According to the invention, mercaptan or amine is added into the gold nanocluster photoresist, so that the solubility and the light transmittance can be remarkably improved, and the photoresist and the gold nanoclusters generate special interaction, and the photoresist has ultrahigh sensitivity, an ultralow threshold value and an excellent printing effect; the ultra-low power processing of the metal-polymer 3D structure can be realized, and meanwhile, the ultraviolet curing can also be realized.

The invention provides a cationic conjugated polymer as well as a preparation method and application thereof. The structural formula of the cationic conjugated polymer is shown in the specification. The preparation method comprises the following steps: reacting tris (4-bromophenyl) amine and N, N-dimethyl-4-(4, 4, 5, 5-tetramethyl-1, 3, 2-dioxaborolane-2-yl) aniline in an organic solvent under the action of a catalyst and an initiator to obtain a first intermediate; the cationic conjugated polymer is prepared from the first intermediate, the second intermediate and the third intermediate under the action of a catalyst and an initiator. The cationic conjugated polymer shows good photo-thermal and photodynamic performance under the irradiation of near-infrared light with the wavelength of 980 nm, so that the effect of inhibiting the growth of bacteria is realized. # imgabs0 #

According to embodiments, a method predicting at least one property of a polymer includes acquiring data from sources to produce experimental data relating to the polymer, performing a second number of molecular simulations, and combining the experimental data and the simulation data into a model for predicting the property of the polymer. The at least one property of the polymer may be a glass transition temperature (Tg). The experimental data provides high fidelity data while simulation data provides low fidelity data. The multi-fidelity model may be a machine learning model. Selecting design alternatives for polymer structures based on the predicted value of at least one property made by the model. The model may be a linear gaussian process surrogate model. A quantitative measure of prediction uncertainty of the model may be calculated, allowing the determination of optimal locations in a design space of the polymer for further experimentation or simulation.

An electronic device may have a display mounted in a housing. The display may have a display panel with an array of pixels on a flexible substrate. A display cover layer may overlap the display panel. The flexible substrate may have a protruding portion that forms a tail. When the display is mounted in the housing, the tail may be bent back on itself to create a bend. The bend may be embedded in molded polymer. The device may have structures that help prevent the display cover layer from being compressed inwardly towards the rear of the housing such as frame structures embedded in the molded polymer and / or housing sidewall structures. Optical components and optical waveguides may be embedded within the molded polymer. Mating chamfers on the display cover layer and housing may help seat the display cover layer in the housing.

A user support includes a hood structure that is supported by a back frame structure of the user support. The hood structure may comprise a one-piece homogeneous polymer structure that is formed by an additive process. The hood structure may include solid structures and at least one porous lattice matrix that is integrally formed with the solid structures.

The invention discloses a preparation method of a self-repairing layer coating liquid, and particularly relates to a preparation method of a self-repairing layer coating liquid with high elongation at break, which comprises the following steps: 1) synthesizing a polyurethane prepolymer solution A terminated by double isocyanate groups; (2) synthesizing a single-side double-bond end-capped polyurethane prepolymer; (3) synthesizing a bottle-brush-shaped polymer; and 4) preparing the self-repairing layer coating liquid with high elongation at break. Meanwhile, the invention also relates to a paint surface protective film. The invention solves the technical problem of providing a high-elongation-at-break self-repairing layer with rigidity and ductility and applying the high-elongation-at-break self-repairing layer to a paint surface protective film. According to the self-repairing layer coating liquid prepared through the method, polyurethane with the self-repairing performance serves as the basis, by introducing a bottle-brush-shaped polymer structure, the ductility of a self-repairing layer after curing is improved, the elongation at break of a coating is improved, it is predicted that the elongation at break can be increased from 100% to 300% or above, and then the problem of coating cracking is effectively avoided.

A connection component for an electrical conductor includes: at least one component body formed, at least in portions, by a plastics material. The plastics material includes a flame retardant. The plastics material is free of perfluorinated or polyfluorinated alkyl compounds. The flame retardant includes a polymer structure of the plastics material and / or an additive incorporated in the polymer structure of the plastics material that substitutes for the perfluorinated or polyfluorinated alkyl compounds, and / or an outer layer formed on the component body.

The present invention provides a dental implant or subperiosteal implant having a porous polymer structure and its use in methods of treatment of periodontal diseases, conditions and symptoms.

A composite separator comprises at least one base film layer and a self-healing functional layer laminated on a surface of the base film layer, wherein the self-healing functional layer contains a thermally cyclopolymerizable precursor material, and / or after the self-healing functional layer has self-healed, the precursor material forms a crosslinked polymer structure. The surface of the base film layer of the composite separator of the present application is provided with a self-healing functional layer, and the composite separator functions to isolate the positive electrode plate from the negative electrode plate and conduct lithium ions while blocking electrons when the secondary battery is under normal working conditions. When overheating or thermal runaway occurs inside the secondary battery, the precursor material in the self-healing functional layer undergoes a thermal polymerization reaction to generate a high-temperature-resistant and high-mechanical-strength crosslinked polymer.

Aspects of the present disclosure include methods for making a polymeric structure having one or more microchannels. Methods according to certain embodiments include conveying a polymerizable composition through a conduit into a space between a build elevator and a build surface of a liquid interface production module, irradiating the polymerizable composition positioned between the build elevator and the build surface to generate a polymerizable composition having a first polymerized region of the polymerizable composition having a microchannel in contact with the build elevator and a first non-polymerized region of the polymerizable composition in contact with the build surface, displacing the build elevator away from the build surface, irradiating the first non-polymerized region of the polymerizable composition to generate a second polymerized region of the polymerizable composition in contact with the first polymerized region and a second non-polymerized region in contact with the build surface and repeating one or more steps in a manner sufficient to generate a polymeric structure having one or more microchannels positioned within the polymeric structure. Systems having a conduit for conveying a polymerizable composition to a liquid interface polymerization module having a build elevator and a build surface configured are also described. Polymer structures having a predetermined fluidic microchannel network prepared by the subject methods and non-transitory computer readable storage medium for practicing the subject methods are also provided.

The invention provides a multifunctional monomer and a preparation method thereof, a solid electrolyte, a lithium ion battery and electric equipment. The polyfunctional monomer has a structure as shown in a formula (1), when the polyfunctional monomer is used as a reactant raw material and is subjected to in-situ curing in electrolyte to form the solid electrolyte, the functionality of the polyfunctional monomer is relatively high, and the polyfunctional monomer can form a highly cross-linked polymer network structure in a polymerization reaction process; the structure endows the polymer with excellent mechanical properties, such as high strength and high modulus, so that the polymer can maintain better structural stability when bearing external stress, the high voltage resistance of the polymer structure is improved, the solid electrolyte is not easy to decompose or crack and lose efficacy, the structural damage of the electrolyte material in the charging and discharging process is inhibited, and the service life of the electrolyte material is prolonged. The electrochemical stability of the electrolyte material is maintained, so that the service life and the safety of the battery are prolonged, and the charge-discharge performance of the battery is maintained.

An intrinsically-safe battery assembly for field devices, the intrinsically-safe battery assembly includes an intrinsically-safe battery and polymeric chassis. In an example, the polymeric chassis is removably coupled to the intrinsically-safe battery and has at least one retention mechanism configured to engage the intrinsically-safe battery. In another example, the polymeric structure has at least one battery ejection mechanism configured to eject the intrinsically-safe battery. A field device is also provided.

The invention relates to the field of fiber membrane preparation, in particular to a preparation and test method of a microfiltration composite fiber membrane, which comprises the following steps: preparing a PVA (Polyvinyl Alcohol) solution; accurately and respectively weighing CA and GO, and respectively adding the CA and the GO into the prepared PVA solution to obtain a PVA / CA / GO spinning solution; assembling SVF base cloth on an unwinding mechanism, coating the front end of the base cloth on the surface of a metal mesh curtain above a solution tank, then pouring a spinning solution into the solution tank, and performing electrostatic spinning after adjusting spinning conditions to obtain a composite fiber membrane; the composite fiber membrane is subjected to hot pressing treatment, so that carboxyl on a cross-linking agent citric acid and hydroxyl of a PVA chain are subjected to an esterification reaction, water resistance is improved through structural regulation and control of a PVA polymer, and the microfiltration composite fiber membrane is obtained. According to the invention, the contact area of the cross-linking agent citric acid and PVA is greatly increased, so that the cross-linking effect is more sufficient, and the fiber membrane can maintain a good fiber form after working in water for a long time.

Switchable light modulator suppresses aperture and array diffraction, reducing blurring of images viewed through films. The light modulator includes a first light-transmissive substrate, a first electrode on one side of the first light-transmissive substrate, a second light-transmissive substrate, a second electrode on one side of the second light-transmissive substrate, a light-transmissive polymeric structure between the first electrode and the second electrode, and an electro-optic medium contained in cells in the polymeric structure. The polymeric structure includes a base and a wall structure defining the cells. Each cell includes wells on the base. The wall structure includes pillar structures and linking wall elements connecting adjacent pillar structures. The pillar structures include distal surfaces parallel to the base arranged with the wells in a given pattern. Application of a driving voltage between the first and second electrodes causes the electro-optic medium to switch between a light-absorbing state and a light-transmissive state.

The invention discloses a high-temperature-resistant environment-friendly drilling fluid filtrate reducer based on humic acid and sodium alginate and a preparation method of the high-temperature-resistant environment-friendly drilling fluid filtrate reducer, and belongs to the technical field of petroleum drilling engineering oil fields. On the premise that a sulfonic acid group is not introduced, humic acid and sodium alginate are selected as main raw materials of the filtrate reducer, and a stable polymer structure is constructed by grafting acrylamide and N-vinyl pyrrolidone 4-acryloylmorpholine, so that the filtrate loss control capability at high temperature is effectively improved, the filtrate reducer does not contain sulfonic acid groups, and the filtrate reducer is environment-friendly and pollution-free. The environment-friendly property and the degradability are excellent. Compared with the existing filtrate reducer, the filtrate reducer provided by the invention has obvious advantages in the aspects of raw material source, synthesis cost, thermal stability, environmental protection performance and the like, is particularly suitable for high-temperature and high-salt complex working conditions of a green drilling fluid system, and has good popularization and application prospects.

The application belongs to the technical field of polymer medicine synthesis, and particularly relates to a polymer for inducing tumor immunogenic cell death, a preparation method and application. The polymer for inducing tumor immunogenic cell death provided by the application has a structure as shown in formula I: in formula I, m is an integer of 110-120; n is an integer of 70-75; p is an integer of 21-79; and R is one of a tertiary amine group, a sulfide group and a tertiary amine sulfide group. The polymer provided by the application has pH responsiveness, can be self-assembled to obtain a polymer nanovesicle, can load drugs, can induce tumor immunogenic cell death (ICD) after application to form an in-situ tumor vaccine, can realize controllable release of a hydrophobic immunoadjuvant, can polarize tumor-associated macrophages (TAMs), and is suitable for tumor immunotherapy application.

A method, in accordance with one aspect of the present invention, includes, during performance of an additive manufacturing process that includes photocuring of a resin, monitoring light output generated by a fluorophore in the resin that exhibits aggregation-induced emission (AIE) behavior. The method also includes outputting an indication of an extent of photocuring based on the monitored light output. The method also includes adjusting in real time a parameter of the additive manufacturing process based on the output indication. A method, in accordance with another aspect of the present invention, includes analyzing at least one mechanical property of a polymeric structure formed by an additive manufacturing process based on light output generated by a fluorophore in the structure.

An intrinsically-safe battery assembly (200) for field devices, includes an intrinsically-safe battery (206) and polymeric chassis (204). In an example, the polymeric chassis (204) is removably coupled to the intrinsically-safe battery (206) and has at least one retention mechanism (224, 226) configured to engage the intrinsically-safe battery (206). In another example, the polymeric structure (204) has at least one battery ejection (228) mechanism configured to eject the intrinsically-safe battery (206). A field device (100) is also provided.

The invention belongs to the field of electrochromic materials, and relates to a preparation method of a colorless-orange red reversible switching electrochromic material based on phenothiazine. The method comprises the following steps: functionalization of phenothiazine micromolecules, introduction of polymerizable functional groups on a phenothiazine structure, ring-opening polymerization in which phenothiazine derivatives participate, dehydration of cyclization polymerization intermediates, and preparation of the electrochromic material. Due to the conjugated electron-rich structure of phenothiazine, phenothiazine has advantages as an electroactive group of an electrochromic material; in addition, a plurality of active sites provide synthesis advantages for polymer structure regulation and control. A non-coplanar propeller configuration and a polymeric monomer are introduced into a phenothiazine skeleton through a synthesis reaction, and the electrochromic film prepared after polymerization has the electrochromic characteristics of reversible switching between colorless color and orange red color, good stability and the like, and has huge application potential in the fields of intelligent windows, camouflage materials and the like.

The invention provides a super-long slow-release slump retaining agent suitable for low-carbon cement as well as a preparation method and application thereof. The slump retaining agent is obtained by carrying out a Graft From grafting reaction on a prepolymer main chain and a side chain with a block structure, the main chain of the prepolymer is of a polymer structure with a plurality of modifiable hydroxyl groups, and is obtained by free radical polymerization of unsaturated enol monomers in the presence of an initiator and a chain transfer agent; the side chain is obtained by polymerization reaction of a monomer A, a monomer B, a monomer C and a monomer D; the monomer A is hydrophobic alkyl acrylate, the monomer B is unsaturated acid, the monomer C is hydroxyl ester, and the monomer D is polyoxyethylene ether. An ATRP initiator of a main chain initiates generation of a multi-branched side chain structure, a side chain contains carboxylic acid and hydroxyl ester at the same time, an ester bond between the main chain and the side chain can be hydrolyzed to release a side chain slump retaining component, and the released slump retaining component can continue to be hydrolyzed through a small monomer to gradually release adsorption groups; and the cement particles can be continuously and slowly adsorbed on the cement particles so as to prolong the slurry fluidity retention time.

The invention discloses an ultra-microporous branched polyaryl piperidinyl anion exchange membrane material as well as a preparation method and application thereof, and relates to the field of anion exchange membrane materials for producing hydrogen by electrolyzing water. According to the ultra-microporous branched polyaryl piperidinyl anion exchange membrane material, a four-functionality branching agent with a structure shown in a formula I is introduced into a polymer structural unit of polyterphenyl piperidone, and a polyaryl piperidinyl compound with a four-branch norbornene bis-benzocyclobutane structure is formed. By adopting the technical scheme, the structural rigidity of a polymer skeleton is improved, the formation of a large number of ultra-microporous structures is promoted, the ionic conductivity of the membrane material is effectively improved, and meanwhile, the problem of relatively poor dimensional stability caused by excessive water absorption of the membrane material is solved; the prepared anion exchange membrane has a wide application prospect in the field of hydrogen production by water electrolysis.