585 results about "Monomer" patented technology

The invention discloses a single-chain nanoparticle composite reinforced and toughened plastic material and a preparation method thereof, and belongs to the technical field of polymer plastics. The reinforced and toughened plastic material is prepared from the following raw materials in parts by weight: 10 to 20 parts of polymer monomer, 0.004 to 0.005 part of initiator, 0.05 to 0.06 part of chain transfer agent, 8 to 12 parts of solvent and 0.1 to 0.2 part of functional filler, the preparation method specifically comprises the following steps: (1) weighing the raw materials; (2) uniformly mixing the raw materials, and performing nitrogen atmosphere replacement and polymerization reaction; and (3) re-precipitating, and drying in vacuum to obtain the product. The reinforced and toughened plastic material disclosed by the invention not only has excellent performance in the aspect of tensile property, but also shows excellent mechanical response under a bending-resistant load, and is suitable for engineering plastic application scenes with relatively high requirements on structural stability and use safety.

The application provides a crosslinked polyethylene insulating material with intrinsic self-repairing and recyclable characteristics, a preparation method and application thereof, and relates to the technical field of cable materials.The crosslinked polyethylene insulating material with intrinsic self-repairing and recyclable characteristics is prepared from the following components in parts by weight: 99.7 parts by weight of low-density polyethylene, 1.0-2.6 parts by weight of peroxide, 0.1-0.5 parts by weight of antioxidant, 5-20 parts by weight of maleimide monomer, 0.35-0.7 parts by weight of catalyst, 0.5-3.0 parts by weight of ligand and 0.5-3.0 parts by weight of furan-based small molecule.The low-density polyethylene is functionally modified through catalytic amination reaction, so that the chain breaking and crosslinking in the modification process are avoided, and the mechanical properties, insulating properties and dielectric properties of the crosslinked polyethylene are enhanced through the post-absorption of the introduced peroxide.Meanwhile, the dynamic reversible Diels-Alder reaction introduced by the post-absorption of the furan-based small molecule enables the polyethylene insulating material to have good intrinsic self-repairing effect on mechanical damage and electrical damage.

The invention relates to a polymer property prediction method and device based on substructure and knowledge enhancement. The method comprises the following steps: obtaining a polymer monomer SMILES to be predicted; adopting a rule-based BRICS algorithm to cut a polymer monomer SMILES to be predicted, and obtaining a substructure SMILES; converting the SMILES of the polymer monomer to be predicted and the SMILES of the substructure into a molecular image, and matching a property influence flag bit for the molecular image of the substructure based on a pre-constructed labeling dictionary; utilizing an improved double-flow ResNet network to respectively extract feature vectors of a polymer monomer molecular image to be predicted and a substructure molecular image to be predicted; respectively polymerizing the feature vector and the property influence flag bit of the substructure, and splicing the feature vector and the feature vector of the polymer monomer to be predicted to obtain a target feature vector to be predicted; and inputting the to-be-predicted target feature vector into a pre-trained multi-layer perceptron model to obtain the property of the to-be-predicted polymer monomer. Compared with the prior art, the prediction precision and generalization ability of polymer property prediction are remarkably improved.

The invention provides polyester and a preparation method and application thereof, the polyester comprises a structural unit derived from the following monomer components: at least one monomer component I selected from hydroxybenzoic acid or hydroxynaphthoic acid; and at least one monomer component II, wherein the monomer component II is selected from p-hydroxybenzoic acid containing a substituent group. A small amount of the monomer component II is introduced into the polyester material, interaction points are provided for chain segments of the polymer, the chain segments are promoted to form a branched structure, and therefore the melt strength of the polymer is well improved.

The invention discloses a high-performance PEEK composite material and application thereof in a robot skeleton, and belongs to the technical field of special engineering plastics, the PEEK composite material comprises the following components by weight: 50-80 parts of PEEK, 10-20 parts of an elastomer, 15-30 parts of carbon fiber, and 5-10 parts of a compatilizer, monomers 1-4 are copolymerized to obtain a hyperbranched polyaryletherketone copolymer, the hyperbranched polyaryletherketone copolymer is terminated by polysiloxane and modified by maleic anhydride, the monomer 1 is 4, 4 ', 4'-trihydroxy-3, 3 ', 3'-trimethoxytriphenylmethane, the monomer 2 is isopropyl hydroquinone, the monomer 3 is hydroquinone, and the monomer 4 is 4, 4 '-difluorobenzophenone. According to the high-performance PEEK composite material and the application of the high-performance PEEK composite material in the robot skeleton, the self-made compatilizer is added, so that the PEEK and carbon fiber composite material has the characteristics of high strength, good interfacial compatibility, good bending fatigue performance and the like.

The invention discloses a dual-curing solvent-free high-temperature-resistant epoxy resin structural adhesive as well as a preparation method and application thereof. The structural adhesive comprises the following components in percentage by weight: 1.5-5% of a latent curing agent, 2-5% of a high-heat-resistant curing agent, 1-5% of nano filler, 0.1-0.3% of a curing accelerator and the balance of epoxy resin. By accurately screening epoxy resin monomers, optimizing a dual curing agent system and introducing the high-temperature-resistant nanofiller, room-temperature stability, medium-temperature rapid curing and gelling and high-temperature complete curing are realized, and the final heat-resistant temperature is greater than or equal to 300 DEG C. Through the synergistic effect of the epoxy resin, the medium-temperature curing agent and the high-temperature curing agent, the crosslinking stability at different temperature stages is ensured. In addition, through introduction of the inorganic nano filler, the high-temperature mechanical property and the heat-resistant stability of the material are further improved. The preparation method does not need to use a solvent, and the prepared epoxy resin structural adhesive has excellent heat resistance and mechanical strength and is suitable for the fields of high-temperature structural adhesives, aerospace composite materials, high-temperature-resistant coatings and the like.

The invention belongs to the field of high polymer materials, and discloses a POSS (Polyhedral Oligomeric Silsesquioxane) modified monomer as well as a preparation method and application thereof. According to the POSS modified monomer, a vinyl POSS (T8-POSS) basic framework with a T8 structure is adopted, a hydrophobic perfluoroalkyl chain (SF) and a thermosensitive benzocyclobutenyl (Si-B) unit are introduced to an inorganic cage, when the POSS modified monomer is subjected to thermocuring to form a multifunctional coating, a hybrid network structure can be constructed by adjusting the content of the SF and the content of the Si-B unit, and therefore the multifunctional coating is formed. The effects of controlling the optical, mechanical, thermal and surface wettability of the coating are achieved, and the coating has high mechanical strength and environment barrier efficiency. Meanwhile, the invention also discloses a preparation method of the POSS modified monomer and a coating prepared from the POSS modified monomer.

The invention provides a polymerizable monomer with the refractive index larger than 1.7 and a preparation method and application thereof.The polymerizable monomer has the structure shown in the formula G1 or G2 or G3 or G4 or G5 or G6, the refractive index of the polymerizable monomer is 1.7 or above, and therefore a holographic recording medium has various excellent characteristics such as high sensitivity, high diffraction efficiency and high refractive index modulation degree; the holographic recording medium is used for a holographic grating, so that the holographic grating has high diffraction efficiency and high refractive index modulation degree.

A resin composition and an article made therefrom are provided. The resin composition includes: (A) 100 parts by weight of an unsaturated bond-containing polyphenylene ether resin; (B) 20 parts by weight to 150 parts by weight of a copolymer, the copolymer having a structural unit formed by a monomer of Formula (1) and a structural unit formed by a monomer of Formula (2), and the content of the structural unit formed by the monomer of Formula (2) in the copolymer is 55 wt % to 90 wt %; and (C) 10 parts by weight to 40 parts by weight of an unsaturated bond-containing crosslinking agent. The resin composition may be used to make various articles, such as a prepreg, a resin film, a laminate or a printed circuit board, and at least one of the following properties can be improved, including glass transition temperature, Z-axis ratio of thermal expansion, multi-layer board heat resistance, interconnect stress test, dissipation factor aging rate, temperature coefficient of dielectric constant, temperature coefficient of dissipation factor and branch-like pattern at laminate edges.

A method for producing modified polytetrafluoroethylene including: polymerizing tetrafluoroethylene and a modifying monomer in an aqueous medium in the presence of a polymer (I) containing a polymerization unit (I) based on a monomer represented by the following general formula (I) to obtain a modified polytetrafluoroethylene:wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more. Also disclosed is a composition containing the modified polytetrafluoroethylene and the polymer (I).

The invention discloses an optical monomer and a preparation method thereof, a composition, a resin material and a preparation method thereof. The optical monomer provided by the invention comprises a quaternary carbon structure and a side chain connected with the quaternary carbon structure through an ester bond. The side chain comprises a thioether chain segment connected with an ester bond, an aromatic group connected with the thioether chain segment and an epoxy group connected with the thioether chain segment. The optical monomer provided by the embodiment of the invention takes a quaternary carbon structure as a core skeleton, and a side chain sequentially comprises an aromatic group, a thioether chain segment and a terminal epoxy group. A thioether structure with high polarizability and an aromatic group are introduced into the molecular design of the optical monomer, so that the refractive index and the optical transparency of a resin material are remarkably improved. And the rigidity of the epoxy aromatic ring is beneficial to improving the thermal stability and mechanical strength of the resin material. The epoxy group at the tail end can react with conventional epoxy resin to form a compact network structure, so that the stability of the resin material is improved, and the yellowing tendency is reduced.

The invention discloses a surface lipophilic modified barite weighting material as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The surface lipophilic modified barite weighting material comprises barite and a surface modifier, and the surface modifier comprises a copolymer formed by polymerizing a monomer A, a monomer B, a monomer C and a monomer D. According to the invention, the lipophilicity of the barite is chemically modified by the surface modifier, and all monomers have a synergistic effect, so that when the grafted and modified barite weighting material is used as the weighting agent of the oil-based drilling fluid, the dispersity and the stability of particles in the oil-based drilling fluid can be improved, and the rheological property, the plugging property and the high-temperature resistance of the drilling fluid can be adjusted.

The invention relates to the technical field of photovoltaic packaging materials, and discloses a butyl sealant for a self-repairing photovoltaic module and a preparation method of the butyl sealant. The butyl sealant is prepared from the following substances in parts by weight: 40 to 60 parts of modified butyl rubber, 20 to 35 parts of inorganic filler, 5 to 15 parts of tackifying resin, 2 to 8 parts of plasticizer, 0.5 to 2 parts of anti-aging agent, 0.3 to 1.0 part of bifunctional crosslinking monomer, 0.08 to 0.25 part of composite catalyst, 2 to 5 parts of microcapsule type repairing agent and 3 to 10 parts of drying agent. According to the invention, through the dual-mechanism design of a'sulfydryl-amino-silicon oxygen bond 'dynamic network and the microcapsule type repairing agent, the self-repairing performance and the aging resistance are synchronously and remarkably improved, and the contradiction that'the self-repairing performance and the aging resistance of a traditional material are difficult to consider at the same time' is solved. Tests show that the 12h repair rate of the sealant for 3mm scratches at 50 DEG C is greater than or equal to 98%, the tensile strength retention rate is greater than or equal to 92% after the sealant is subjected to damp-heat aging at 85 DEG C / 85% RH for 1000 h, and the sealant is superior to existing similar products.

To provide a non-fluorinated dispersant capable of achieving dispersibility equivalent to that of a fluorinated dispersant in a dispersion containing dispersed fluorinated resin particles.SOLUTION: There is provided a dispersant for fluorinated resin particles for dispersing fluorinated resin particles in a liquid, the dispersant comprising: (1) a non-fluorinated copolymer containing, as repeating units, (a) a Si-O-bond-containing monomer having one polymerizable functional group in a single molecule, the polymerizable functional group being a (meth)acryloyl group, and (b) a (meth)acryloyl-group-containing monomer having one polymerizable functional group in a single molecule, the polymerizable functional group being a (meth)acryloyl group, except that the Si-O-bond-containing monomer is excluded; and (2) an organic solvent.SELECTED DRAWING: None

The present disclosure provides a drag reducing agent. In an embodiment, the drag reducing agent includes a polymer and a liquid carrier. The polymer is composed of one or more C6-C14 α-olefin monomers. The polymer includes a residual amount of zirconium. The polymer has an absolute weight average molecular weight (Mw(Abs)) greater than 1,300,000 g / mol and a (Mw(Abs) / Mn(Abs) from 1.3 to 3.0.

A material design apparatus includes a learned model that has learned a correspondence between input information about a blend proportion of a monomer and output information about physical property values of a polymer by machine learning. Each unit of the material design apparatus is configured to: receive as input a blend proportion range of at least one monomer; receive required ranges of physical property values of a polymer; generate a comprehensive analysis point of a polymer polymerized from multiple monomers, the multiple monomers including, within the blend proportion range, at least one monomer of which the blend proportion range is input; input the generated comprehensive analysis point into the learned model to calculate physical property values of a polymer, to create a data set, and to store the created data set; and select a polymer within the required ranges of the physical property values from the data set.

The invention relates to the technical field of functional materials, in particular to a supramolecular aggregate modified vinyl resin material and a preparation method thereof. The supramolecular aggregate modified vinyl resin material is prepared from the following raw materials in parts by weight: 1.3 to 4.6 parts of aliphatic isocyanate monomer, 5 to 15 parts of micromolecular polyol, 0.8 to 2.9 parts of ureido pyrimidone monomer, 1 to 3 parts of curing agent, 50 to 100 parts of vinyl resin and 0.5 to 2.3 parts of accelerant, so that the modified vinyl resin material has reversible dynamic mechanical property; good damping vibration attenuation performance can be provided; and the material has good mechanical properties and excellent impact toughness, and can be widely applied to various fields as a high-performance functional material.

Provided are a rubber composition capable of giving vulcanized molded objects having a satisfactory balance among oil resistance, freeze resistance, and flex fatigue resistance, and a vulcanizate and a vulcanized molded object which have a satisfactory balance among oil resistance, freeze resistance, and flex fatigue resistance.According to the present invention, there is provided a rubber composition including a chloroprene-based rubber and an epichlorohydrin-based rubber, wherein the rubber composition contains 5 to 95 parts by mass of the chloroprene-based rubber and 5 to 95 parts by mass of the epichlorohydrin-based rubber, per 100 parts by mass of rubbers contained in the rubber composition, and the chloroprene-based rubber has a content of an unsaturated nitrile monomer unit of less than 25% by mass.

A resin composition contains a resin that includes a monomer unit derived from (A) an acetoacetic acid ester compound including two or more acetoacetic acid ester groups in a molecule and a monomer unit derived from (B) an amine compound including two or more primary amino groups in a molecule, and that has a three-dimensional crosslinked structure in which an acetoacetic acid ester group of the (A) acetoacetic acid ester compound and a primary amino group of the (B) amine compound are condensation bonded.

The invention provides a polymer composition, a polymer film material, a holographic grating, a preparation method of the holographic grating, an optical film material and display equipment. The polymer composition comprises a first polymerizable monomer, a second polymerizable monomer and a film-forming resin. The first polymerizable monomer is a non-liquid crystal monomer; the second polymerizable monomer is a liquid crystal monomer, the second polymerizable monomer comprises an active group, and the second polymerizable monomer can be subjected to a copolymerization reaction with the first polymerizable monomer through the active group under illumination. The refractive index modulation degree of the optical film material can be improved by using the polymer composition.

Provided is a water repellent composition comprising (A) a polymer and (B) a silicone compound, wherein the polymer (A) contains a repeating unit derived from a hydrocarbon group-containing monomer (a) having a hydrocarbon group having 2-40 carbon atoms; the silicone compound (B) is composed of a non-resin-based silicone and a resin-based silicone; in a GPC chart of the silicone compound (B), there is a peak top in a region in which the molecular weight is 1500 or more; a component having a molecular weight of 1500 or more in the silicone compound contains the non-resin-based silicone excluding amino-modified silicones; and the amount of the silicone compound (B) is 1%-49% by weight with respect to the total amount of the amount of the polymer (A) and the amount of the silicone compound (B). The water repellent composition according to the present disclosure can provide a water repellent composition that can impart good water repellency and good chalk mark properties to a base (in particular, a fiber product).

The invention belongs to the technical field of high polymer materials, relates to the technical field of adhesives, and particularly relates to a high-adhesion, low-modulus and high-damping polymer reversible interlocking network adhesive film as well as a preparation method and application thereof. The polymer reversible interlocking network adhesive film provided by the invention comprises a strong bonding single network A containing a dynamic covalent bond and a low modulus single network B containing a dynamic covalent bond. Wherein a polar group in the strong adhesion single network A endows an adhesion interface with adhesiveness, a low-modulus monomer introduced into the low-modulus single network B enables the adhesive to present lower modulus, and an interlocking network structure endows the adhesive with higher cohesiveness and interface adhesion performance. Meanwhile, the adhesive is endowed with the high damping characteristic through slippage and other motions among molecular chains of the interlocking network, and the adhesive film can be endowed with self-repairing performance and recoverability through dynamic bonds in the polymer reversible interlocking network adhesive film. Therefore, the reversible interlocking network adhesive film provided by the invention synergistically realizes three key performances of strong adhesion, low modulus and high damping.

A borate compound-containing composition soluble in hydrocarbon solvents. A composition containing base A, or a compound having a total carbon number of not less than 8 and represented by the formula (5):wherein R and R′ are each independently an optionally substituted C1-30 alkyl group, an optionally substituted C3-15 cycloalkyl group, or an optionally substituted C6-14 aryl group; anda borate compound represented by the following formula (1):wherein R1, R2, R3 and R4 are each independently a C6-14 aryl group substituted by one or more fluorine atoms or fluoro C1-4 alkyl groups; and[A-H]+ is a base A-derived cation. A method for producing a polymer, by polymerizing at least one kind of monomer selected from the group consisting of olefins and dienes by using the composition A as a cocatalyst.

Binder compositions for fibrous materials, fibrous materials, and methods of forming fibrous materials are provided. Binder compositions for fibers materials include a beta-hydroxy alkyl amide crosslinked with a monomeric or polymeric polycarboxylic acid. Binder compositions exhibit a cure rate of greater than or about 4 MPa / C at 160° C.

The invention provides a thermosetting adhesive composition, a thermosetting adhesive as well as a preparation method and application of the thermosetting adhesive. The thermosetting adhesive composition comprises the following components in parts by weight: 55-90 parts of an acrylate prepolymer; 10 to 50 parts of a first acrylate monomer; 1-10 parts of a thermal initiator; 5-30 parts of a filler; and 0.5-5 parts of an auxiliary agent. The thermosetting adhesive has relatively strong bonding force and electrolyte resistance, and the sizing thickness of the thermosetting adhesive is controllable, so that the performance of the battery is not influenced by overlarge thickness during bonding.

A resin composition exhibiting excellent adhesive strength when used as an adhesive and a cured product using the same are provided. Further, a laminate using the cured product and a method for producing the laminate are provided.A resin composition including: 1,1-dicyanoethylene (A), a polymerizable monomer (B) represented by general formula (I) below, and a polymerizable monomer (C) represented by general formula (II) below:CH2═CR1R2  (I)CHR6═CR7R8  (II)

The present invention provides a fluorine-containing polymer comprising tetrafluoroethylene units (1) and a fluorine-containing polymer derived from the general formula (2): CF2=CF(CF2) n The monomer unit (2) of the perfluorodiene shown in CF=CF2 (where n represents an integer from 2 to 10) has a content of tetrafluoroethylene unit (1) of 98.0 mol% to 99.999 mol% or more relative to all monomer units constituting the fluoropolymer, and a content of monomer unit (2) of 0.001 mol% to 2.0 mol% relative to all monomer units constituting the fluoropolymer.

An aqueous binder composition is disclosed that includes 5.0% by weight to 50.0% by weight of a monomeric polyol having at least four hydroxyl groups, based on the total solids content of the aqueous binder composition; and at least 50.0% by weight of a cross-linking agent comprising a polymeric polycarboxylic acid having at least two carboxylic acid groups, based on the total solids content of the aqueous binder composition. The aqueous binder composition includes a ratio of molar equivalents of carboxylic acid groups to hydroxyl groups is between 0.15 / 1.0 and 2.23 / 1 and has a pH of 2.2 to 4.0 and a viscosity at 40% solids and 25° C. of 10 cP to 60 cP.

Provided is a novel resin which exhibits a high refractive index and excellent heat resistance. The present invention relates to a resin having a repeating unit represented by formula (I). In formula (I),-S-Z-S-represents a structural unit derived from a monomer represented by formula (II), and L represents a single bond or a divalent group. In formula (II), n represents an integer of 0-3, and a plurality of n may be the same as or different from each other. R represents a monovalent substituent, and if a plurality of R are present, the plurality of R may be the same as or different from each other. The two-SH groups in formula (II) are bonded to the 1-position and 6-position, or the 2-position and 7-position of the naphthalene ring.

Provided are: a biodegradable resin composition which maintains good mechanical strength and has excellent melt fluidity; and a molded article which uses the biodegradable resin composition. The biodegradable resin composition contains a polyester (PE) containing a structural unit (A) derived from a monomer represented by general formula (1) and a structural unit (B) derived from a monomer represented by general formula (2), and a polyester carbonate (PEC). The polyester carbonate (PEC) contains a structural unit (A) derived from a monomer represented by general formula (1) and a structural unit (B) derived from a monomer represented by general formula (2). In general formula (1), n represents an integer of 4-16.