34 results about "Polydicyclopentadiene" patented technology

The invention relates to the technical field of engineering plastics, and discloses a polydicyclopentadiene / carbon nanofiber composite material and a preparation method and application thereof.The method comprises the steps that DCPD, ENB and MNA are mixed to be uniform, CNF is added and subjected to ultrasonic dispersion, a Grubbs second-generation catalyst is added and subjected to ultrasonic dispersion after freezing, finally, mixed liquid is poured into a mold, and the polydicyclopentadiene / carbon nanofiber composite material is obtained. And heating and curing to obtain the high-performance PDCPD / CNF composite material. According to the preparation method, the interaction between PDCPD and CNF can be remarkably improved, so that the mechanical property of the composite material is improved, the used raw material DCPD has low viscosity and high reaction activity, and rapid forming can be realized; meanwhile, the whole production process of the modified PDCPD composite material is green and environment-friendly, the process is simple, complicated chemical modification is not involved, and the feasibility of large-scale industrial production is achieved.

The invention discloses fast-curing modified polydicyclopentadiene resin as well as a preparation method and application thereof. The preparation method comprises the following steps: preparation of a polydicyclopentadiene resin system: dissolving a Grubbs second-generation catalyst and tributyl phosphite in cyclohexylbenzene to prepare a catalyst solution, and mixing the prepared catalyst solution with a dicyclopentadiene or norbornene-dicyclopentadiene mixed solution; preparing an epoxy resin system: adding an anhydride curing agent and an accelerant into epoxy resin and fully mixing; and mixing and stirring the epoxy resin system and the polydicyclopentadiene resin system, uniformly mixing, and storing at room temperature to obtain the modified polydicyclopentadiene resin. The curing degree of the modified PDCPD resin can reach 90-95% within 3-5 minutes under the condition of 60-90 DEG C. The modified PDCPD resin has good interface bonding with carbon fibers, glass fibers and basalt fibers, and the prepared composite material has excellent mechanical properties and high heat resistance.

The present application relates to the technical field of colored tire rubber, and specifically discloses an anti-discoloration rubber composition for colored tires and its preparation method. An anti-discoloration rubber composition for colored tires is prepared by first preparing modified colored silica, then using solution-polymerized styrene-butadiene rubber, natural rubber, and EPDM as the rubber matrix, adding modified colored silica for coloring and reinforcement, and then adding polydicyclopentadiene resin, titanium dioxide, YDH-151 silane coupling agent, zinc oxide, stearic acid, sulfur and TBBS accelerator, protective wax, AFS / LG antioxidant, antistatic agent and other auxiliary agents to prepare the anti-discoloration rubber composition for colored tires. The anti-discoloration rubber composition for colored tires prepared in this application has the advantages of stable color, aging resistance, good tensile strength, strong wear resistance, and strong weather resistance.

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 invention relates to the technical field of engineering plastics, and discloses a polydicyclopentadiene / carbon fiber felt composite material and a preparation method and application thereof, and the preparation method comprises the following steps: dispersing nanoparticles and norbornene dicarboxylic acid in a methanol solution to prepare a dispersion liquid; immersing the carboxylated modified carbon fiber felt into the dispersion liquid to obtain a modified carbon fiber felt; and mixing dicyclopentadiene, ethylidene norbornene and a Grubbs second-generation catalyst, immersing the mixture into the modified carbon fiber felt, and carrying out hot-pressing curing molding to obtain the composite material. By constructing an HCFF-NPA-PDCPD covalent interface system, a synergistic modification strategy of a physical effect (NP increases the surface roughness and provides reaction sites) and chemical bonding (NDA serves as a bridge to connect fibers and a matrix) is realized; the production process of the obtained composite material has the characteristic of being green and environment-friendly, waste water, waste gas or dust emission is avoided, the energy consumption is relatively low, and the requirement of the modern industry for sustainable development is met.

1. The name of this design product: Side skirt (made of polydicyclopentadiene). 2. Application of this design product: used for automobile side skirts. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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.

The invention relates to a polydicyclopentadiene thermotropic shape memory material with excellent heat resistance and a preparation method and application thereof.The polydicyclopentadiene thermotropic shape memory material is obtained by conducting ring-opening metathesis polymerization on dicyclopentadiene under catalysis of a Grubbs second-generation catalyst, the Tg of the polydicyclopentadiene thermotropic shape memory material ranges from 136 DEG C to 164 DEG C, the gel content ranges from 95.21% to 98.97%, the shape fixing rate at 220 DEG C is larger than or equal to 97%, and the polydicyclopentadiene thermotropic shape memory material has excellent heat resistance. The shape recovery rate is greater than or equal to 95%, and the shape recovery rate reaches 95% or above within 10 min at the temperature of 220 DEG C. The polydicyclopentadiene thermotropic shape memory material provided by the invention is high in Tg temperature, good in heat resistance, good in shape memory performance and relatively low in cost, the application range of the thermotropic shape memory material can be expanded, and the polydicyclopentadiene thermotropic shape memory material has good economic value.

The wind generating set cover body comprises a polydicyclopentadiene shell, the wind generating set cover body is used for at least partially shielding the wind generating set, and the wind generating set cover body comprises the shell and a framework. The shell is a polydicyclopentadiene shell, and the shell comprises a plurality of shell modules. The framework is a metal framework and comprises a plurality of beams, and the beams are connected to form a criss-cross grid type framework. The connecting structure between the beams is at least one of welding connection, bolt connection or rivet connection. At least part of the shell modules in the multiple shell modules are bonded with the multiple beams. At least part of the shell modules are connected with the beams through bolts or rivets.

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 present invention discloses a solid depilatory wax and a preparation method thereof, relating to the technical field of depilatory wax. The solid depilatory wax comprises the following raw material components by mass fraction: 30-70% natural resin, 5-20% fatty alcohol, 3-20% natural wax, 2-10% tackifier, 0.2-5% natural plant oil, 0.2-5% anti-inflammatory, soothing and repairing agent, 0.2-3% skin conditioner, 0.2-3% antioxidant, and 0.2-2% stabilizer; wherein the tackifier is selected from at least one of polyisobutylene, hydrogenated polydicyclopentadiene, hydrogenated (styrene / methylstyrene / indene) copolymer, and hydrogenated (styrene / butadiene) copolymer; and the anti-inflammatory, soothing and repairing agent comprises component A and component B, wherein component A is guaiacyl ether, and component B is peppermint oil, purslane extract, golden chamomile extract, houttuynia cordata extract, and scutellaria baicalensis extract. The depilatory wax provided by the present invention has a low melting point and a good depilatory effect, and can improve the damaged skin barrier function caused by hair plucking, thereby preventing skin or skin follicle inflammation caused by hair removal.

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.

According to the fiber-reinforced polydicyclopentadiene base material and the preparation method thereof provided by the invention, solvent pretreatment, alkali washing and silane coupling agent treatment are carried out on chopped fibers or fiber powder of selected aramid fibers, carbon fibers or glass fibers, so that the wettability of the fibers and a dicyclopentadiene feed liquid is improved; and fully infiltrating the fiber reinforced polydicyclopentadiene base material with dehydrated and pour point depressed dicyclopentadiene to finally prepare the fiber reinforced polydicyclopentadiene base material. Through subsequent material liquid preparation and reaction molding detection, compared with a common polydicyclopentadiene base material, the tensile strength and bending strength of fiber-reinforced polydicyclopentadiene prepared from the fiber-reinforced polydicyclopentadiene base material prepared by the method are greatly improved, the impact strength is improved by about 104.67%, and the bending strength is improved by about 65.98%.

The present invention discloses an insulating rod material based on modified epoxy material and a preparation method thereof, belonging to the technical field of insulating rods. The insulating rod material comprises the following raw materials in parts by weight: 70-90 parts of bisphenol epoxy resin, 15-25 parts of polydicyclopentadiene, 10-20 parts of modified glass fiber, 1-3 parts of curing accelerator, 4-12 parts of antioxidant, and 2-4 parts of lubricant. The prepared insulating rod material uses bisphenol epoxy resin as a matrix to give the insulating rod material excellent insulation and corrosion resistance; the antioxidant can greatly enhance the antioxidant performance of the insulating rod material; the modified glass fiber can not only promote the curing of the epoxy resin, but also significantly enhance the flame retardancy, mechanical properties and a certain degree of heat resistance of the insulating rod material, and the performance is long-lasting and stable; therefore, the insulating rod material prepared by the present invention has good insulation and corrosion resistance, stable and efficient flame retardancy, mechanical properties, antioxidant and a certain degree of heat resistance, and is halogen-free and flame retardant, and is environmentally friendly.

The invention belongs to the technical field of novel materials, and particularly relates to a high-strength low-odor polydicyclopentadiene composite material and a preparation method thereof. The raw materials comprise a component A and a component B, the component A is prepared by mixing the following raw materials in parts by weight: 40-50 parts of a functional monomer prepolymerization solution, 0.5-1 part of a main catalyst and 1-3 parts of an antioxidant; and the component B is prepared by mixing the following raw materials in parts by weight: 80-90 parts of dicyclopentadiene, 1-3 parts of a cocatalyst and 5-10 parts of an auxiliary agent. The preparation method comprises the following steps: mixing a functional monomer prepolymerization solution, a main catalyst and an antioxidant to obtain a reaction solution A; mixing dicyclopentadiene, a cocatalyst and an auxiliary agent to obtain a reaction liquid B; mixing the reaction liquid A and the reaction liquid B under the protection of nitrogen, injecting the mixture into a mold, performing reaction injection molding, and demolding to obtain a finished product. The prepared composite material is short in forming period, high in mechanical strength, low in odor, environmentally friendly and suitable for industrial production.

The application relates to the technical field of rubber materials, and particularly discloses a high-wear-resistance composite rubber material and a preparation method thereof. The high-wear-resistance composite rubber material comprises the following components in parts by weight: 30-55 parts of natural rubber, 30-55 parts of high-cis polybutadiene composite rubber, 15-30 parts of solution-polymerized styrene-butadiene rubber, 5-7 parts of polydicyclopentadiene resin, 2-4 parts of liquid polyisoprene rubber, 0.5-1.5 parts of modified graphene oxide, 30-40 parts of carbon black, 10-15 parts of wear-resistant filler, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-3 parts of sulfur, 0.8-1.6 parts of a coupling agent, 0.5-2.5 parts of an antioxidant and 0.5-2.5 parts of an accelerator. The application adopts a natural rubber / high-cis polybutadiene composite rubber / solution-polymerized styrene-butadiene rubber blending system, uses polydicyclopentadiene resin and liquid polyisoprene rubber as plasticizers, has high crosslinking density and good compatibility, and achieves the purpose of improving the wear resistance of the rubber material.

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 application discloses a controllable polymerization forming method of electric heating temperature-controlled polydicyclopentadiene, and the method is characterized by the following steps: controlling a multi-path electric heating temperature control mechanism in a mold through a program, setting a controllable temperature gradient zone, forming a controllable temperature gradient from top to bottom and from high temperature to low temperature in a workpiece zone of a forming cavity, setting a compensation zone near a low-temperature zone of the temperature gradient zone, and then adding dicyclopentadiene glue liquid into the workpiece zone in the mold cavity until the glue liquid fills 95% of the volume of the cavity, and then starting a heater of an initiation heating zone to induce PDCPD polymerization reaction to develop in the direction of the temperature gradient, and finally forming a single-crystal polymerization workpiece. The application relates to the technical field of controllable polymerization, and the controllable polymerization forming method of electric heating temperature-controlled polydicyclopentadiene can realize perfect fitting of a polydicyclopentadiene forming piece to a mold shape, and the mechanical properties of the forming piece are stable and uniform.

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.