19 results about "Polydicyclopentadiene" patented technology

The invention discloses a carbon fiber modified sizing agent as well as a preparation method and application thereof. The preparation method of the carbon fiber modified sizing agent comprises the following steps: (1) reacting 5-norbornene-2-methylamine with monofunctional epoxy resin to obtain slurry; and (2) dissolving the slurry prepared in the step (1) in an organic solvent to prepare the modified sizing agent. And then obtaining the modified carbon fiber through a dipping and sizing process. The method is simple in process, and the interface bonding strength of the carbon fibers and the polydicyclopentadiene can be greatly improved.

The application provides a polydicyclopentadiene / glass fiber felt composite material and a preparation method thereof. The method comprises the following steps: step (1): laying a glass fiber felt on a glass plate, sequentially laying a release cloth, a flow guide net and a vacuum bag, and performing vacuum pumping and pressure maintaining; step (2): pouring a cyclic olefin liquid into the vacuum bag in step (1), performing stage temperature rising and curing, and releasing a polydicyclopentadiene / glass fiber felt composite material. The cyclic olefin liquid is configured as follows: A1, uniformly mixing 100 parts by mass of DCPD and 5-20 parts by mass of a TCPD system to prepare a mixed solution; wherein the TCPD system comprises 10wt% of TCPD and 90wt% of DCPD; A2, dissolving 0.02-0.06 parts by mass of a Grubbs second-generation catalyst and 0.002-0.006 parts by mass of a retarder in 1-2 parts by mass of a high-boiling-point silane coupling agent, and adding the mixture into the mixed solution in step A1 to prepare a liquid. The method adopts a vacuum-assisted resin infusion molding (VARI) technology, has the characteristics of simple operation and rapid reaction, and the obtained composite material has high mechanical properties.

The application discloses a kind of functional polyether, polydicyclopentadiene composite material and its preparation method.Functional polyether with end group being norbornene structure is directly mixed with DCPD, filler and auxiliary agent, then segmented polymerization is carried out, the toughness and low temperature performance of matrix are fundamentally improved, meanwhile, the introduction of functional polyether effectively improves the dispersity and interface effect of filler in matrix, to achieve the purpose of reinforcing and toughening polydicyclopentadiene composite material;Meanwhile, the functional groups on the side chain of polyether make the obtained polydicyclopentadiene composite material have higher heat resistance, aging resistance, flame resistance and antibacterial property.The method has low production cost, short production cycle, simple preparation method, and the modified polydicyclopentadiene composite material meets various engineering material and special material application scenarios.

Disclosed herein are cyclic polymers comprising dicyclopentadiene (DCPD) and dicyclopentadiene derivatives without cross-linking that can act as chemical additives to enhance the application and texture of cosmetic compositions.

This invention discloses a polydicyclopentadiene material, prepared from dicyclopentadiene monomers and phenolic or amine compounds containing norbornene or norbornene structures under the catalysis of a main catalyst and a co-catalyst. The phenolic or amine compounds containing norbornene or norbornene structures not only possess antioxidant capabilities but can also undergo cross-linking reactions with dicyclopentadiene under the action of the dicyclopentadiene ring-opening metathesis polymerization system and the catalyst, forming a fully interpenetrating polymer network with dicyclopentadiene. This simultaneously achieves the purposes of reinforcement, toughening, and anti-aging, resulting in a polydicyclopentadiene material with high strength, toughness, and anti-aging properties, as well as good dielectric properties.

The invention discloses a compound, polydicyclopentadiene resin and a preparation method thereof, and the preparation method of the polydicyclopentadiene resin comprises the following steps: mixing dicyclopentadiene, a regulator, a Grubbs catalyst and a compound of formula (I), and reacting at a first temperature to obtain a product. The preparation method comprises the following steps: mixing a compound shown as a formula (I) with DCPD, a Grubbs catalyst and a regulator to form a composition, and controlling a polymerization process to prepare a material which has excellent mechanical strength and can be controllably degraded under the conditions of acid or alkali and the like. The phosphate group contained in the hydrogel can generate inorganic phosphate after being hydrolyzed, the hydrogel has good biocompatibility, pollution which cannot be degraded by traditional cross-linked macromolecules can be relieved, and degradation products still have good environment-friendly properties.

The present disclosure relates generally to in-mold coating compositions that can be adhered to a surface of an article that comprises a cycloolefin polymer, such as polydicyclopentadiene (PDCPD); the constituents, including crosslinkers and polyols, of in-mold coating compositions that can be adhered to a surface of an article that comprises a cycloolefin polymer; systems for adhering an in-mold coating composition to a surface of an article that comprises a cycloolefin polymer; methods for adhering an in-mold coating composition to a surface of an article that comprises a cycloolefin polymer; an in-mold coating layer adhered to a surface of an article that comprises a cycloolefin polymer; and articles comprising an in-mold coating layer adhered to a surface of an article that comprises a cycloolefin polymer.

This invention discloses a top edge beam assembly, comprising an A-pillar exterior trim panel sub-assembly and a top edge beam exterior trim panel sub-assembly connected to each other. The A-pillar exterior trim panel sub-assembly includes an A-pillar exterior trim panel body and an A-pillar exterior trim panel inner panel made of polydicyclopentadiene material. The A-pillar exterior trim panel body and the A-pillar exterior trim panel inner panel are fixedly connected by a first connecting structure, forming a cavity structure. The top edge beam exterior trim panel sub-assembly includes a top edge beam exterior trim panel body and a top edge beam exterior trim panel inner panel made of polydicyclopentadiene material. The top edge beam exterior trim panel body and the top edge beam exterior trim panel inner panel are fixedly connected by a second connecting structure, forming a cavity structure. In this invention, all major components are made of polydicyclopentadiene material, which itself has the characteristics of low density, high specific strength, and high specific modulus. Through optimized cavity structure design, significant weight reduction of the overall components can be achieved while ensuring structural rigidity and strength. This invention also discloses a vehicle.

Mounting frame for use in motor vehicle construction for defining a recess of a sunroof and for fastening and / or clamping a material of a headliner around the recess and / or a covering towards the recess, characterized in that the mounting frame is manufactured in one piece from rigid polymeric material, namely dicyclopentadiene (DCPD) or poly-dicyclopentadiene (PDCPD), using the Reaction Injection Moulding (RIM) process.

The invention provides a method for establishing a near infrared spectrum off-line analysis model and a method for measuring the content of tricyclopentadiene in a polydicyclopentadiene synthesis process, and belongs to the technical field of analysis and detection. The method comprises the following steps: collecting reaction liquid at a sampling point to obtain a sample; respectively carrying out gas chromatographic analysis and near-infrared detection on the samples to obtain a measured value of the content of tricyclopentadiene in each sample and a near-infrared spectrogram of each sample; carrying out association and model optimization on the measured values of the tricyclopentadiene content in part of the samples and the near infrared spectrograms of the corresponding samples to obtain a to-be-verified model; and verifying the to-be-verified model through the residual samples to finally obtain the near infrared spectrum off-line analysis model. The near infrared spectrum off-line analysis model is established by adopting the method disclosed by the invention, the rapid and accurate detection of the TCPD content can be realized, and the rapid quality screening requirement in the PDCPD production process is met.

The application belongs to the technical field of forming die materials, and particularly relates to a modified polydicyclopentadiene material and a preparation method and application thereof. Raw materials of the modified polydicyclopentadiene material include A component and B component; the A component includes the following raw material components in parts by weight: 100 parts of dicyclopentadiene, 8-12 parts of a methacryl cage type silsesquioxane, 4-6 parts of a butene-ethylene-styrene copolymer, and 2-3 parts of methylaluminoxane. The modified polydicyclopentadiene material provided by the application has high high-temperature stability, long service life and the like.

The invention discloses a preparation method of a carbon fiber felt reinforced polydicyclopentadiene composite material, and belongs to the technical field of carbon fiber reinforced composite materials. The carbon fiber felt material is prepared from low-cost and easy-to-recover modified chopped carbon fiber filaments and a certain proportion of thermoplastic resin by a suspension method, the carbon fiber felt material is subjected to hot-press setting, and the thermoplastic resin infiltrates the surface of the carbon fiber to improve the interface between the carbon fiber and PDCPD; the preparation method comprises the following steps: preparing a DCPD ring-opening polymerization catalyst into microcapsules by using a microcapsule technology, preparing the microcapsules and a DCPD monomer into a mixed solution, injecting the mixed solution into pores of a carbon fiber felt material by using a vacuum infusion technology, heating and curing, and finally preparing the carbon fiber / PDCPD composite material plate which has the advantage of low cost and high mechanical property. The requirements on the performance and cost of the composite material in the fields of sports, automobiles, buildings, ice and snow equipment and the like can be met.

The application provides a method for improving the interface bonding of polydicyclopentadiene and fibers, wherein the fibers are glass fibers or carbon fibers, and the method comprises the following steps: S1, preparing a polydicyclopentadiene / fiber composite material; S2, placing the composite material into a reaction kettle, vacuumizing, and heating to a temperature of 150-200 DEG C; S3, injecting an oxygen-containing atmosphere into the reaction kettle, maintaining the heating temperature at 150-200 DEG C, and performing an oxidation treatment on the composite material; in step S3, the oxygen content in the oxygen-containing atmosphere is not less than 20%, and the oxidation treatment time is 5-30 min. The application does not require any treatment on the glass fibers or carbon fibers and resin formula, the process is simple, is suitable for composite materials prepared by different processes, and can improve the interface bonding of polydicyclopentadiene and glass fibers or carbon fibers without complex devices and equipment.

This invention belongs to the field of polydicyclopentadiene products, specifically relating to a molding method for a high-filler polydicyclopentadiene composite material. The molding method includes the following steps: mixing and extruding a combination liquid A and a combination liquid B in a twin-screw extruder; the resulting liquid extrudate enters a mold cavity for polymerization molding; during the mixing and extrusion process, dicyclopentadiene polymerization does not occur in the combination liquid A and combination liquid B. This invention utilizes the characteristics of high-filler dicyclopentadiene, achieving shear mixing of the combination liquid A and combination liquid B through the forced mixing and compression action of the twin-screw extruder, achieving a material mixing effect essentially consistent with reaction injection molding. This allows for the production of high-filler polydicyclopentadiene composite material products without using reaction injection molding equipment, making the industrial production of polydicyclopentadiene composite material products with higher hardness and heat distortion properties possible.

A device including a core structure having a strike face and a back face. A first composite fiber laminate having a first plurality of composite fiber plies may be bonded to the strike face of the core structure. A second composite fiber laminate having a second plurality of composite fiber plies may be bonded to the back face of the core structure. Each composite fiber ply may be impregnated with a polydicyclopentadiene (PDCPD) resin matrix to enhance ballistic resistance.

The utility model discloses an automobile engine hood structure based on a PDCPD material, and relates to the technical field of automobile engine hoods, the automobile engine hood structure comprises an engine hood, a sealing frame is installed on the front face of the engine hood, a reinforcing net is installed on the front face of the sealing frame, the reinforcing net is installed on the inner side of the engine hood, supporting columns are installed on the front face of the engine hood, and connecting screw holes are formed in the inner sides of the supporting columns. According to the automobile engine hood, the polydicyclopentadiene lining is installed, the assembling shell fixes the polydicyclopentadiene lining on the outer side, the polydicyclopentadiene lining is installed on the inner side of the engine hood, the polydicyclopentadiene lining is made of polydicyclopentadiene materials, and the weight of an automobile body can be obviously reduced due to the low-density characteristic of the polydicyclopentadiene materials; according to the engine hood model, the engine hood model structure design is optimized through the analysis result, and the excellent impact resistance of the polydicyclopentadiene material can effectively protect the safety of a driver and passengers in the collision process.

This invention discloses a polydicyclopentadiene carbon fiber composite material and its preparation method, belonging to the field of composite material technology. Based on the steps of preparing carbon fiber felt, polydicyclopentadiene resin, carbon fiber reinforcement, and polydicyclopentadiene carbon fiber composite material, this invention proposes a method for preparing novel carbon fiber composite materials by combining multi-stage hot roll pre-pressing with vacuum infusion molding. The material, during preparation, simultaneously possesses the resin uniformity of vacuum infusion molding and the compactness of roll pressing, making it suitable for preparing composite materials using resins with high viscosity, poor flowability, and a tendency to generate bubbles during vacuum infusion as the base material. This method can effectively simplify the process, reduce costs, and produce advanced carbon fiber reinforced composite materials with high product quality stability and a low number of internal material defects.

The invention provides intrinsic antioxidant polydicyclopentadiene and a preparation method thereof, and belongs to the technical field of high polymer material synthesis. The preparation method of the intrinsic anti-oxidation polydicyclopentadiene comprises the following steps: carrying out double decomposition copolymerization reaction on dicyclopentadiene and an anti-oxidation monomer under the action of a double decomposition catalyst, and curing to obtain the intrinsic anti-oxidation polydicyclopentadiene, wherein the antioxidant monomer has at least one structure of A1 and M3, n in A1 is 0-2, and R1 and R2 are independently selected from C1-C4 alkyl groups. The intrinsic antioxidant polydicyclopentadiene prepared by the preparation method disclosed by the invention has excellent thermal oxidation stability, high compatibility and long-term durability. A1: and M3:.