49 results about "Polynorbornen" patented technology

The invention provides a novel polynorbornene anion exchange ionomer containing a polar functional group as well as a preparation method and application of the novel polynorbornene anion exchange ionomer. The polynorbornene has excellent thermal stability and chemical stability. Meanwhile, the AEI main chain of the polynorbornene has no aryl group, so that the adsorption influence caused by the aryl group is avoided. The synthesized addition polynorbornene AEI in the form of quaternary ammonium salt can be dissolved in a low-boiling-point solvent, and it is ensured that a membrane electrode can be prepared through a solvent casting method. Besides the solubility of the AEI, the addition polynorbornene-based AEI in the form of quaternary ammonium salt is modified by utilizing a thiol-ene click reaction, an anion exchange ionomer containing a polar functional group can be prepared, the interaction between the AEI and an electrolytic catalyst is improved, the reaction is simple and easy to operate, the universality is high, and the method is suitable for industrial production. And the current density in the AEMWE system containing the AEI can be effectively improved.

The present invention relates to water-insoluble polymer membranes (AEM) on the basis of new side-chain functionalized copolymers on the basis of hydrogenated polynorbornenes and their use as alkaline anion exchange membrane materials, for example in alkaline water electrolyzers, fuel cells or flow batteries.

The invention discloses a polymer based on side-chain liquid crystal polynorbornene as well as a preparation method and application thereof, a monomer based on side-chain liquid crystal polynorbornene has a structure as shown in a general formula 1, and the polymer based on side-chain liquid crystal polynorbornene has a repeating unit as shown in a general formula 8. According to the monomer structure, a benzamide group is introduced into a side chain liquid crystal molecular structure, adjacent liquid crystal side chains generate hydrogen bond interaction after polymerization, on one hand, the mechanical property of the material is improved, on the other hand, stacking arrangement of a layered structure can be promoted during film preparation, and the gas barrier performance is improved.

The present disclosure belongs to the technical field of catalyst preparation, and provides a polynorbornene / carbon black-cross-linked three-dimensional network-immobilized bimetallic copper / gold (PNBI / CB-Cu / Au) nanocatalyst, and a preparation method and use thereof. Metallic copper and gold both exist in a form of nanoparticles in the catalyst and are uniformly dispersed, and further enhancing a catalytic performance. Moreover, the carrier is a polynorbornene / carbon black-cross-linked three-dimensional network, and a relative content of free hydroxyl groups in the catalyst is controlled by changing a monomer ratio to adjust a hydrophilic-lipophilic balance value of the catalyst, adapting to a reaction of an organic phase with an aqueous phase. Furthermore, the catalyst is insoluble in conventional solvents, and has a desirable effect in immobilizing nanoscale metallic copper, prolonging a service life of the catalyst.

The present invention provides an ionic polynorbornene crosslinked anion exchange membrane and a preparation method therefor and a use thereof. The membrane prepared in the present invention has a smooth and transparent surface, has excellent conductivity, stability and mechanical properties, and can be applied to the fields of fuel cells, electrolyzed water, electrodialysis, acid recovery, etc. The preparation method of the present invention is simple to operate, and fewer polymerization catalysts can be used when combined with a chain transfer agent, thereby reducing costs; and scale-up production and roll-to-roll continuous preparation can be achieved, providing a guarantee for industrial production and application of membranes.

The invention discloses and requests to protect a preparation method of high-purity norbornene alkyl silyl ether. Specifically, the invention discloses and requests to protect an industrial-scale preparation method of high-purity norbornene methyl silyl ether. The high purity monomers prepared according to the methods of the present invention can be used in a variety of applications, including but not limited to the preparation of high quality, high purity polynorbornene that can be used in a variety of electronics and other various applications.

The application belongs to the technical field of fuel cell application, and discloses a polynorbornene-based anion exchange ionomer with double-domain coupled ion channels, a preparation method and application thereof. The polynorbornene-based anion exchange ionomer simultaneously constructs an ion domain rich in cation groups and a synergistic functional domain rich in oxygen-containing functional groups at a molecular scale, the two types of domains are coupled with each other in the material and form a continuous double-domain ion transmission network, so that the ionomer can still maintain a stable and continuous hydrogen and oxygen ion transmission channel under the conditions of a thin layer state of a cathode catalyst layer and limited hydration, and effectively improves the ion transmission connectivity and catalyst utilization efficiency of the catalyst layer interface. The ionomer is suitable for being used as an ion-conducting bonding material of a cathode of an alkaline membrane fuel cell, can improve the oxygen reduction reaction performance of the cathode, and provides a new material and structural design idea for a low-noble metal loading and high-power density fuel cell electrode structure design.

The disclosure provides certain porous membranes comprised of cyclic polyolefin polymers, such as poly(norbornene)s. In one embodiment, a poly(norbornene) polymer is dissolved in tetrahydrofuran, cast into a film and subjected to solvent induced phase separation to provide a porous filter membrane (i.e., film).

A proton exchange polymer comprises a polynorbornene copolymer with hydrophobic and hydrophilic blocks that can be phosphonated to produce phosphonic acid functional groups for proton exchange. Also, the polymer may be crosslinked to form quaternary ammonium groups on the side chains. The polynorbornene copolymer may be acid doped to ionically bond phosphonic acids to the quaternary ammonium groups that may for ion pairs for proton exchange. The proton exchange polymer has high temperature stability with the phosphonic acid functional group and can be mechanically durable with cross linking. Proton exchange membranes may utilize the proton exchange membrane in fuel cell and electrolyzer applications.

This invention provides a temporary bonding adhesive, its preparation method, and its application. The raw materials for preparing the temporary bonding adhesive include the following components: modified polynorbornene resin, SEBS resin, antioxidant, and solvent. The raw materials for preparing the modified polynorbornene resin include: norbornene or its derivatives, maleimide derivatives, olefins or their derivatives, and an initiator. The temporary bonding adhesive provided by this invention, based on modified polynorbornene resin and low-modulus elastomer resin (SEBS resin), not only possesses excellent film-forming properties but also exhibits high modulus at high temperatures, ensuring strong adhesion between the chip and the temporary bonding adhesive.

The present invention relates to a photosensitive composition containing copolymers and terpolymers of PFAS-free polynorbornene, i.e., PNB, in combination with specific additives, which can be used to form microelectronic and / or optoelectronic devices and components thereof, and more particularly, to a composition which can be used to form microelectronic and / or optoelectronic devices and components thereof. The present invention relates to a composition containing PNB that does not contain PFAS, a specific polyfunctional cross-linking agent, and two or more phenolic compounds that are resistant to thermal oxidation chain degradation and exhibit improved mechanical properties.

The invention discloses a polymer for winding insulation and a preparation method and application thereof, and belongs to the technical field of electrical insulation materials and preparation thereof. According to the invention, the problem of low yield in the existing preparation of polynorbornene dianhydride is solved. According to the preparation method, the NBEA is polymerized by using DMF as a solvent, the high-performance polynorbornene dianhydride polymer is efficiently prepared by using the excellent dissolving capacity and low interference to the polymerization reaction of DMF, and the yield reaches 30%. Moreover, the prepared polynorbornene dianhydride contains two anhydride groups, the number of traps in the material is increased, the traps can capture and limit charge carriers and reduce charge flow, so that the insulating property of the material is improved, and after the two anhydride groups are introduced, the originally fragile polynorbornene becomes tough, so that the service life of the material is prolonged, and the service life of the material is prolonged. And the insulating material with high insulating property and excellent mechanical property is obtained.

A curable thermoset composition and a cured thermoset composition are provided. The thermoset composition may be prepared to have a low coefficient of thermal expansion (CTE) in the range of 0 to 100 degrees Celsius, a low dielectric constant (e.g., less than 2.5), a low dielectric loss tangent (e.g., less than 0.004 at 10 GHz), or a combination thereof. The curable thermoset composition contains an addition polymerized polynorbornene copolymer, a bismaleimide resin having a high level of hydrocarbon content, and a thermal radical initiator.

The disclosure provides certain porous membranes comprised of cyclic polyolefin polymers, such as poly(norbornene)s. In one embodiment, a poly(norbornene) polymer is dissolved in tetrahydrofuran, cast into a film and subjected to solvent induced phase separation to provide a porous filter membrane (i.e., film).

The application discloses an addition polynorbornene-based anion exchange ionomer, a preparation method and application thereof, and belongs to the technical field of ion exchange membranes. The application can improve the dispersibility of a raw material by using simple water as a solvent and adding water-soluble amine in water while completing the quaternization of the water-insoluble polymer raw material, and can ensure that the hydrophilic polymer after quaternization can be dissolved in an aqueous solution containing amine. The excess amine raw material and solvent water can be easily removed through a reduced pressure distillation treatment. The quaternization degree of the addition polynorbornene-based AEI in the form of a quaternary ammonium salt synthesized by the application is more than 90%, and the addition polynorbornene-based AEI is soluble in a low-boiling-point solvent, so that the solvent casting method for preparing a membrane electrode can be ensured. The synthesis method of the addition polynorbornene-based anion exchange ionomer is simple and easy to operate, does not use an organic solvent, and does not need complex sedimentation and centrifugation operations, and is suitable for large-scale production.

The present invention relates to water-insoluble polymer membranes (AEM) based on novel side-chain functionalized copolymers based on hydrogenated polynorbornenes and their use as alkaline anion exchange membrane materials, for example in alkaline water electrolyzers, fuel cells or flow batteries.

The invention provides a polynorbornene polymer and an application thereof. The polynorbornene polymer has a structure as shown in a formula I. A flexible film prepared from the polynorbornene polymer is used as a capacitor film, and when a dielectric property test is carried out, the breakdown field strength of the capacitor film at 150 DEG C is greater than or equal to 500MV / m; the dielectric constant is greater than 2.2 at the temperature of 150 DEG C and the frequency of 100Hz; the dielectric loss at 150 DEG C and 100 Hz is less than 1.0 * 10 <-3 >; the energy storage density is greater than 0.8 J / cm < 3 > at 150 DEG C and 300 MV / m; and the energy storage efficiency at 150 DEG C and 300 MV / m is greater than 90.0%. Therefore, when the flexible film prepared from the polynorbornene polymer provided by the invention is used as a capacitor film, the flexible film has high dielectric constant, low dielectric loss, high thermal stability and excellent energy storage property.

A multiblock, cationic-functionalized norbornene copolymer is formed by a process including performing a vinyl addition polymerization in the presence of a metal catalyst of a first norbornene monomer substituted with a first alkyl group and a second norbornene monomer substituted with a second alkyl group by adding a predetermined amount of the first norbornene monomer and a predetermined amount of the second norbornene monomer sequentially to the reaction to form blocks of an intermediate norbornene multiblock copolymer. The second alkyl group includes a substituent which undergoes a reaction with a precursor for a cationic group having a volume less than 0.25 cm3 / mol. The process further includes reacting the precursor for the cationic group with the intermediate norbornene multiblock copolymer to form the multiblock, cationic-functionalized norborene copolymer.

The present invention discloses a high-performance benzocyclobutene-based polynorbornene composite material and its preparation method. The structural formula of the benzocyclobutene-based polynorbornene composite material is shown in Formula I, where R1, R2, and R3 are independently selected from C1-C4 alkyl or oxy groups; x is in the range of 1-100; and y is in the range of 1-100. The novel material of the present invention exhibits excellent comprehensive properties in many aspects, including excellent thermal stability (thermal decomposition temperature T d5% >440°C), good hydrophobicity (contact angle greater than 100°), and excellent mechanical properties. The molecular design method provided by this invention paves the way for the development of new low-dielectric constant materials and demonstrates an effective strategy for improving the performance of electronic packaging technology. #imgabs0# Formula I.

The invention discloses polynorbornene imide for winding insulation as well as a preparation method and application of the polynorbornene imide, and belongs to the technical field of electrical insulation materials and preparation of the electrical insulation materials. The invention solves the problem of low polymerization degree of the existing polynorbornene imide. Compared with a traditional DCM solvent, the binary solvent system composed of DMF and ethyl acetate is used for preparing polynorbornene imide, the polymerization effect is obviously improved, and the polymer yield is as high as 17.3%. Compared with the polynorbornene, the polynorbornene imide film prepared by the preparation method has the advantages that an imide group is introduced, and the imide group has a relatively strong electron attraction effect, so that the electrophilic property of the polynorbornene is enhanced, and the breakdown field strength of the polynorbornene imide can reach 500MV / m. The preparation process provided by the invention is simple, feasible, pollution-free, low in required equipment cost and suitable for large-scale production, has important scientific research value, and also has huge application potential and market prospect.

The present invention discloses a bio-based high-damping rubber material and a preparation method thereof. The material comprises 100 parts of raw rubber; 3-10 parts of zinc oxide; 1-3 parts of stearic acid; 10-60 parts of a reinforcing filler; 2-20 parts of a plasticizer; 4-10 parts of an antioxidant; 2-15 parts of a damping material; and 1.5-6 parts of a vulcanization system. The rubber is itaconate rubber or a mixture of itaconate rubber and natural rubber, and the damping material includes polynorbornene rubber and a damping additive A. The rubber material of the present invention solves the problem that conventional damping rubbers cannot balance damping performance and fatigue performance, and suffer from unstable damping performance.

The invention belongs to the technical field of nanofiber membrane material preparation, and provides a preparation method of a polynorbornene spinning nanofiber adsorption separation membrane, which comprises the following steps: step 1, adding calcium hydride as a drying agent into a round-bottom flask, and adding dichloromethane with the content of more than 95%; step 2, adding 5-norbornene-2-carboxylic acid and anhydrous dichloromethane into the reaction flask, and introducing inert gas; step 3, dissolving the PNB-COOH polymer powder and PVDF powder in a DMF solution according to different mass ratios; according to the method, the stable performance and the consistent quality of the nanofiber membrane are ensured by accurately controlling the preparation process; after the polynorbornene is introduced, the selectivity and the adsorption capacity of the membrane on refractory pollutants such as organic dyes are remarkably improved; meanwhile, the steps are clear, operation is easy and convenient, industrial production is easy to achieve, an efficient and novel nanofiber membrane material is provided for the field of water treatment, and wide market application prospects are achieved.

The invention is suitable for the field of dielectric polymer materials, and provides a polynorbornene dielectric material and a preparation method and application thereof.The polynorbornene dielectric material is prepared from norbornene monomers with the structural formulas of Y1 and Y2, the molecular structure general formula of the polynorbornene dielectric material is # imgabs0 #, m and n are the degree of polymerization, m: n = 0.1 / 0.9-0 / 1, and the molecular formula of the polynorbornene dielectric material is shown in the description. Wherein m is equal to 0 under the condition that Y1 is homopolymerization. The invention provides a trifluoromethyl copolymerized alicyclic side chain intrinsic high-energy-storage-density polynorbornene dielectric material which is used at the temperature of 150-200 DEG C. The invention further provides a preparation method of the dielectric material. The method is simple in preparation process, mild in reaction condition, wide in universality and capable of being applied to large-scale production.

A method of synthesizing a mixed matrix membrane (MMM) film. The method includes: synthesizing a polymer including a polynorbornene or a polytricyclononene; synthesizing covalent-triazine frameworks (CTFs); preparing a polymer solution by dissolving the polymer in a first solvent; preparing a filler solution by dispersing the CTFs in a second solvent; adding the polymer solution to the filler solution while stirring the filler solution, forming a casting solution; pouring the casting solution into a membrane support; and drying the poured casting solution in the membrane support to form the MMM film including the CTFs.

The application provides a polynorbornene, a modified polynorbornene and a preparation method thereof, and belongs to the technical field of polymer materials. The polynorbornene is a random copolymer of norbornene, ethylidenenorbornene and phenylnorbornene. The polynorbornene provided by the application has a high molecular weight and a narrow molecular weight distribution, different functional groups can be introduced at different side chain positions of the same molecular chain, and the copolymer can be endowed with more new functions.

The invention discloses a polynorbornene-based composite anion exchange membrane and a preparation method and application thereof, the composite anion exchange membrane comprises polysulfone resin and ionic polynorbornene, or the composite anion exchange membrane comprises polybenzimidazole resin and ionic polynorbornene, or the composite anion exchange membrane comprises polybenzimidazole resin and ionic polynorbornene, or the composite anion exchange membrane comprises polybenzimidazole resin and ionic polynorbornene. The composite material comprises polysulfone resin, polybenzimidazole resin and ionic polynorbornene. According to the polynorbornene-based composite anion exchange membrane disclosed by the invention, the polysulfone resin or the polybenzimidazole resin is introduced into the ionic polynorbornene, so that the mechanical strength of the anion exchange membrane in a wet membrane state can be remarkably improved, the polynorbornene-based composite anion exchange membrane can be used for assembling a more stable water electrolysis device, and the durability is improved.

There is provided a polymeric nanoparticle comprising: a hydrophobic synthetic polymer core; and a hydrophilic bioactive shell, wherein the hydrophobic synthetic polymer core and hydrophilic bioactive shell are parts of a bioactive synthetic polymer with a poly(norbornene-dicarboximide) backbone having one or more repeating units selected from the group consisting of general formula (1), (2) and (3). Also provided are a composition comprising bioactive synthetic polymeric nanoparticles, bioactive synthetic polymers, macromolecules for preparing said bioactive synthetic polymers, related methods and uses.

The present invention constructs a FRET system of a binary copolymer with polynorbornene as the main chain, and belongs to the technical field of organic chemical synthesis and polymer materials. The present invention uses norbornene ring-opening metathesis polymerization to adjust the ratio of the donor and the acceptor, thereby obtaining a series of customized luminescent copolymers with FRET effect. In this invention, as the ratio of the donor and the acceptor decreases, we find that the system gradually changes from blue light to red light, and the efficiency of FRET transmission increases.

The invention discloses a polynorbornene imide film as well as a preparation method and application thereof, and belongs to the technical field of electrical insulating materials and preparation thereof. The problem that an existing polynorbornene imide-based material is poor in insulation performance at the high temperature is solved. According to the invention, norbornene dianhydride and an aniline derivative are subjected to an amidation reaction under the action of a catalyst to obtain a monomer, and the monomer is subjected to a ring-opening metathesis polymerization reaction to prepare the all-organic polynorbornene imide-based insulating polymer. According to the polymer, a polynorbornene imide side chain structure is changed, a methyl group with a high polarization characteristic is introduced to the para-position of a benzene ring to improve the dielectric property of an insulating medium, and strong electronegativity (-CF3,-F,-Cl and-Br) groups are introduced to the ortho-position and para-position of the benzene ring to improve the insulating property of a polynorbornene imide-based insulating medium; therefore, the dielectric property and the breakdown field strength of the insulating medium are improved, and the dielectric material for winding insulation with good insulating property is prepared.

The invention provides a perovskite cell, the perovskite cell comprises a transparent conductive substrate, a hole transport layer, a perovskite absorption layer, an electron transport layer and an electrode, and the hole transport layer comprises a hole transport material. The hole transport material is a polynorbornene hole transport material. On the basis of a polynorbornene main chain structure, two polynorbornene hole transport materials (PNB-Cz-O and PNB-Cz-S) are designed and synthesized by introducing a dimethoxytriphenylamine or dimethylthio triphenylamine substituted carbazole side chain unit, and the problems that hole transport materials in perovskite solar cells are low in hole mobility, high in hole transport efficiency and the like are solved. And the performance of the battery is influenced. The invention also provides a method for preparing the perovskite cell, and a laminated cell and a photovoltaic module comprising the perovskite cell.