38results about How to "Improve poor compatibility" patented technology

The invention relates to modified polyphenyl ether resin and application thereof. The modified polyphenyl ether resin has a long carbon chain structure which contains at least one group of hydrocarbon group with carbon element greater than or equal to 3. The modified polyphenyl ether resin adopts the structure comprising at least one group of hydrocarbon group with carbon element greater than or equal to 3, so the compatibility between the polyphenyl ether and other resin can be enhanced, the split-phase 'island' phenomenon of a resin system is remarkably improved, the dielectric constant and the loss of a laminated plate can be reduced, the viscosity of the resin system on a metal foil can be improved, and the heat resistance of the plate is maintained.

The invention belongs to the technical field of polymer auxiliaries and particularly relates to an amphiphilic pectinate composite type polymer light stabilizer and a preparation method thereof. A molecular side chain of the composite type polymer light stabilizer contains diphenyl ketone type ultraviolet light absorber functional groups, hindered amine type free radical catcher groups, a lipophilic group acrylate, a hydrophilic group methoxy polyethylene glycol molecular chain, and the like at the same time. With two functional monomers, namely an ultraviolet light absorber and a free radical catcher, the light stabilizer disclosed by the invention has dual light-stability effects and a high thermal decomposition temperature, is amphiphilic and especially suitable for light stabilization of a wood-plastic composite material. The light stabilizer is synthesized by adopting free radical solution polymerization, simple in preparation method and suitable for industrial production.

The invention discloses an epoxy nanocomposite based on polyhedral oligomeric silsesquioxanes (POSS) and a preparation method of the epoxy nanocomposite based on the POSS and relates to the epoxy nanocomposite with a controllable phase structure capable of improving effect and based on the POSS. The preparation method includes the following steps of allocating a POSS monomer, a chain transfer agent and an initiating agent in a solution according to the measuring amount through a reversible addition-fragmentation chain transfer (RAFT) method, conducting freeze thaw and degassing through liquid nitrogen, charging argon shield to enable the mixture to react, and obtaining PMAiBuPOSS; further allocating PMAiBuPOSS, Methl Methacrylate monomer (MMA) and an initiating agent in a solution, and obtaining POSS base block copolymer , namely, PMAiBuPOSS-b-PMMA, through the RAFT; conducting melt blending on the POSS monomer, epoxy resin, the prepared POSS base block copolymer to obtain blend precursor of the POSS and the epoxy, adding in a curing agent, fully stirring, dissolving the mixture the curing agent, pouring the blend into a die, conducting temperature programming and curing, and obtaining the nanocomposite with the controllable phase structure and based on the POSS.

The invention discloses a method for preparing antibacterial polyamide fiber through in-situ polymerization, and belongs to the technical field of modified polyamide materials. Zr(HPO4)2 is adopted to load polyfurfuryl alcohol to wrap antibacterial nano metal powder microspheres, polyvinylpyrrolidone (PVP) and metal powder are subjected to high-speed ball milling to prepare nano metal powder with good dispersity, and then the nano metal powder and furfuryl alcohol are subjected to a polymerization reaction to prepare polyfurfuryl alcohol wrapped antibacterial nano metal powder microspheres, so that the agglomeration of the nano metal powder is avoided; hydrogen bonds between hydroxyl of organic polyfurfuryl alcohol and P-OH of Zr(HPO4)2 interact to realize loading of the antibacterial nano metal powder, wherein the metal powder is copper powder, zinc powder, nickel powder, copper-zinc alloy powder or copper-iron alloy powder; and the polyfurfuryl alcohol can have good compatibility with polyamide, and a prepared antibacterial polyamide fiber material has good antibacterial property, thermal stability and fiber strength.

The invention discloses a polyvinyl chloride-graphene composite material and a preparation method and application thereof, and belongs to the technical field of nano material production processes. Thepreparation method comprises the following steps: preparing phenyl dicarboxylate modified graphene, mixing the phenyl dicarboxylate modified graphene with polyvinyl chloride resin and a matching aidto obtain a mixture, and carrying out mixing and molding processes on the mixture to obtain the polyvinyl chloride-graphene composite material. According to the polyvinyl chloride-graphene composite material disclosed by the invention, the phenyl dicarboxylate plasticizer and the graphene have an adsorption effect, and the phenyl dicarboxylate modified graphene and the polyvinyl chloride resin have a compatibilization effect so that the compatibility of a graphene phase and a polyvinyl chloride phase in the composite material is improved. Therefore, the invention discloses a preparation methodwhich is low in cost, free of solvent pollution and simple in process, and the polyvinyl chloride-graphene composite material graphene prepared by the preparation method has good compatibility and further has excellent antistatic performance, physical and mechanical properties and other material properties.

The invention discloses a preparation method of an epoxy resin curing agent. The epoxy resin curing agent is prepared by carrying out a reaction on a biphenyl-type phenol liquid crystal element and abifunctional epoxy compound, and in the preparation process, the liquid crystal element is introduced into the epoxy resin curing agent. When the epoxy resin curing agent provided by the invention isused for curing epoxy resin, heat conductivity of a cured product can be improved, and meanwhile, the problem of poor compatibility of the biphenyl-type phenol liquid crystal element and an epoxy resin matrix is solved. In addition, the preparation method of the epoxy resin curing agent is simple and is easy to operate, and production is convenient. The raw materials used in the preparation process are wide, cost is low, and the preparation method is easy for wide popularization and use.

The invention discloses a flame-retardant quartz plate. The flame-retardant quartz plate is prepared from the following components in percentage by mass: 25 to 30 percent of quartz powder, 40 to 45 percent of a particular raw material, 10 to 15 percent of ceramic powder, 1 to 2 percent of a silane coupling agent, 1 to 2 percent of a curing agent, 0.5 to 1 percent of ammonium ferrous sulfate, 0.5 to 1 percent of tert-butyl hydroquinone, 1 to 3 percent of a flame retardant and 10 to 15 percent of unsaturated polyester resin. According to the flame-retardant quartz plate disclosed by the invention, the ammonium ferrous sulfate and the tert-butyl hydroquinone are added, so that the compatibility between an inorganic flame retardant and unsaturated resin can be improved, all raw materials can be uniformly mixed, the interfacial adhesion property is strong, an internal gap is smaller, and the bonding is closer; the obtained flame-retardant quartz plate has excellent abrasion resistance and also has excellent mechanical performance and higher bending strength, and meanwhile, the flame-retardant quartz plate has good flame retardant effect and lower water absorption.

The invention discloses an oil-resistant low-temperature-resistant rubber material for vacuum braking hoses, made from, by weight, 100-200 parts of a main material, 40-80 parts of KTC stronWi, 25-75 parts of lightweight calcium carbonate, 10-50 parts of white carbon black, 5-20 parts of Cabot carbon black N550, 5-15 parts of indirect zinc oxide, 2-5 parts of calcium oxide, 6-18 parts of silane coupling agent, 50-70 parts of a plasticizer, 2-6 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 2-8 parts of N-isopropyl-N'-phenyl-p-phenylenediamine, 1.5-4.5 parts of N-(1,3-dimethyl)butyl-N'-p-phenylenediamine, 0.5-6 parts of microcrystalline wax, and 2-6 parts of a crosslinking agent. The oil-resistant low-temperature-resistant rubber material for vacuum braking hoses has excellent elongation at break, good mechanical properties, excellent ozone resistance and aging resistance, and good oil resistance and low temperature resistance.

The invention discloses a motor with multiple communication addresses, a site selection method, electrical equipment and a communication method.The motor can serve as slave equipment to be in networking communication with external host equipment, the motor comprises a motor body and a motor controller, the motor controller comprises a circuit board, and a microprocessor, an inverter circuit and a network communication module are integrated on the circuit board; the microprocessor of the motor is in networking communication with external host equipment through the network communication module, and is provided with a plurality of different communication addresses at the same time; according to different communication modes of the microprocessor of the motor and the external host equipment, the corresponding communication address is selected to realize networking communication between the motor serving as the slave equipment and the external host equipment, so that the motor can adapt to various different application scenes, the compatibility of the motor is improved, management disorder is avoided, and the service life of the motor is prolonged. Moreover, the management cost can be reduced, the functions of the motor are increased, the motor is suitable for different application scenes of a user side, and the application range of the motor is expanded.

The invention discloses a preparation method of large-particle size melamine cyanurate. The preparation method comprises the following steps: (1) uniformly mixing melamine and cyanuric acid, adding water, heating, keeping temperature, and removing moisture; (2) carrying out prepolymerization reaction on caprolactam and a catalyst, then adding a cocatalyst, and uniformly mixing; and (3) adding a prepolymer obtained from the step (2) to a system obtained from the step (1) for polymerization reaction, after the polymerization reaction is finished, cooling, and discharging. MCA prepared through the method disclosed by the invention has large particle size, is coated with nylon 6 on a surface and can be used for improving the problem of poor compatibility of the MCA and a matrix when applied to plastic modification and nylon modification especially. The preparation method disclosed by the invention is green and environment-friendly. The MCA can reduce the phenomenon of dust reduction by being taken as a raw material of downstream plastic processing.

The invention discloses a high-performance PBO paper-based material and a preparation method thereof. The method comprises the following steps: dipping PBO raw paper in a PBO precursor solution, drying, and then carrying out hot pressing and heat treatment to obtain the high-performance PBO paper-based material. The PBO and the PBO derivative are used for enhancing the PBO paper for the first time. The similarity of the chemical structure improves the problem of poor compatibility between the traditional resin and the PBO fiber, and the interface interaction is improved; the stress transfer between interfaces is also improved due to similar moduli, so that the PBO paper-based material with excellent performance can be prepared, and the application requirements in the fields of aerospace, national defense and military, electricity, transportation and the like can be met.

The present invention belongs to the technical field of modified asphalt, and in particular relates to polystyrene hybrid material modified asphalt and a preparation method thereof. The polystyrene hybrid material is a polystyrene silica hybrid material, and on the basis of the weight of asphalt as a benchmark, the polystyrene hybrid material dopping content is 1-8wt%. Compared with the prior art, the polystyrene hybrid material modified asphalt has the following advantages: poor polystyrene and asphalt compatibility problem is improved, first the hybrid material is ultrasonically dispersed in a solvent, and subsequently mixed with asphalt, in the mixing process, the solvent is volatilized so as to ensure the modifying effect of the polystyrene hybrid material; in the modified asphalt preparation process, preparation temperature is low, and only is 100-130 DEG C, while the conventional polystyrene modified asphalt preparing temperature is about 180 DEG C, energy is saved, serious asphalt aging is prevented to ensure good performance of the modified asphalt; high and low temperature properties of the prepared asphalt mixture are improved significantly compared with an ordinary polystyrene modified asphalt mixture.

The invention discloses a dispersion system of SBS modified emulsified asphalt, a coating and a preparation method. According to the dispersion system, the coating and the preparation method of the SBS modified emulsified asphalt, the o-tolyl glycidyl ether and the nano-zinc oxide are compounded and added into the raw materials, the o-tolyl glycidyl ether can reduce the viscosity so as to improve the defects of high viscosity and difficult emulsification when the SBS is high in mixing amount, and the molecular chain of the o-tolyl glycidyl ether contains an epoxy group, so that the SBS modified emulsified asphalt has a good dispersion property. The SBS can react with carboxyl in asphalt to generate a covalent bond, namely the poor compatibility of SBS and asphalt molecules is improved by utilizing chemical group bonding with asphalt. Nano-zinc oxide has the characteristics of large specific surface area, large surface free energy and good dispersion effect, forms non-bonding interaction with asphalt to form a more stable structure, and can disperse SBS in the asphalt more uniformly, so that the storage stability of the SBS modified emulsified asphalt is effectively improved.