24results about How to "Lower surface resistivity" patented technology

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-temperature-resistant high-impedance pressure-sensitive adhesive, a supporting film and a preparation method of the supporting film. A styrene-butadiene-styrene block copolymer (SBS) is used as a main body material, an acrylic copolymer with high carboxyl content is grafted in a solvent in a thermal initiation mode, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained after the high-temperature-resistant and high-impedance pressure-sensitive adhesive is compounded with tackifying resin, a curing agent and an antioxidant, and after optical-grade PET is coated with the high-temperature-resistant and high-impedance pressure-sensitive adhesive, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained. According to the novel supporting film, the polarity of the SBS main body material is low, the excellent electrical insulation performance is provided, the supporting film body has the characteristic of high impedance, and therefore the requirement for high impedance of the supporting film in a copper bar friction experiment is met; in addition, after the acrylic copolymer with high carboxyl content is grafted, a large number of crosslinking points can be provided, and the overall crosslinking degree is greatly increased after thermocuring, so that the high-temperature modulus of the adhesive layer is improved, and the adhesive layer is endowed with the characteristic of high-temperature deformation resistance.

The invention discloses a high-strength cold-resistant fiber and a preparation method thereof, and relates to the field of fibers. When the high-strength cold-resistant fiber is prepared, diphenylphosphine sequentially reacts with triallylmethoxysilane and nickel bromide, and a silicon-phosphorus-nickel complex is prepared; the preparation method comprises the following steps: reacting an alkene mixed solution, azodiisobutyronitrile, a hydrochloric acid solution and a silicon mixed solution, diluting with 4-methyl cyclohexanone, and reacting with zinc bromide to prepare a pre-modified polyacrylate emulsion; the preparation method comprises the following steps: carrying out a batch reaction on graphene oxide and 1-aminopyrrole to prepare modified graphene oxide; the modified graphene oxide, 2, 5-dihydroxy terephthalaldehyde and the pre-modified polyacrylate emulsion react and then electrostatic spinning is conducted, and the high-strength cold-resistant fiber is prepared. The high-strength cold-resistant fiber prepared by the invention has antibacterial, anti-aging, flame-retardant and antistatic capabilities.

The invention relates to the technical field of plate electrodes, in particular to a plate electrode based on a polymer and a conductive micro-nano material and a preparation method of the plate electrode, the plate electrode comprises the polymer and the conductive micro-nano material, the polymer is one or two of a polymer plate and a polymer emulsion, and the particle size of the conductive micro-nano material is one or more of 40 nm to 10 [mu] m. According to the plate electrode based on the polymer and the conductive micro-nano material and the preparation method of the plate electrode, the plate electrode prepared from the conductive micro-nano materials with different particle sizes has relatively low surface resistivity and relatively high oxygen evolution potential, and can meet application requirements of specific places such as water treatment, electrochemical preparation of graphene and the like.

The invention discloses a low-VOC (volatile organic compound) and high-conductivity thermoplastic resin composite material and a preparation method thereof. The thermoplastic resin composite material consists of the following components in parts by weight: 90-110 parts of thermoplastic resin, 10-16 parts of functional filler and 0.1-0.5 part of antioxidant, the functional filler is a doped mesoporous magnesium oxide / polyaniline composite material. The functional filler is adopted to modify the thermoplastic resin, so that small molecular substances in VOC can be adsorbed, and the VOC performance of the thermoplastic resin composite material is improved. The formation of a polyaniline gel conductive network structure can be promoted, and the conductivity of the thermoplastic resin composite material is enhanced. The material can be used in the fields of automobile and household appliance materials, and has excellent application prospects.

The invention relates to the technical field of ABS (Acrylonitrile Butadiene Styrene) composite materials, and discloses an anti-static ABS composite material based on a carbon nanotube and a preparation method of the anti-static ABS composite material. The anti-static ABS composite material prepared by the invention is prepared from the following raw materials in parts by weight: 70 to 90 parts of ABS resin, 8 to 15 parts of polycarbonate resin, 5 to 12 parts of composite conductive filler, 1 to 3 parts of lubricant, 5 to 10 parts of modified heat-resistant agent and 0.2 to 0.4 part of antioxidant, aBS resin is used as matrix resin, and polycarbonate resin is added to improve the comprehensive performance of the composite material; a carbon nano tube is used as a substrate, a composite conductive filler is prepared through modification, the conductivity of the substrate is improved, and then the antistatic performance, the mechanical performance and the impact strength of the substrate are improved; and the heat resistance of the matrix is improved by adding the modified heat-resistant agent.

The invention discloses a special conductive PVC (polyvinyl chloride) resin and a preparation method thereof, and the method comprises the following steps: adding vinyl chloride monomer, deionized water, a composite initiator, a composite emulsifier and a PH value regulator into a polymerization kettle in a uniform dispersion manner after high-rotating-speed mechanical shearing, and heating with hot water to start polymerization reaction at the polymerization temperature of 49 + / -0.2 DEG C to obtain polyvinyl chloride latex; adding a viscosity reducer and a defoaming agent into the polymerization kettle; the obtained latex enters a discharging groove after being recycled, a conductive additive is added into the discharging groove, and the latex is evenly stirred in the discharging groove; dehydrating by a spray type drying tower, and physically crushing by a hammer type grinding machine to obtain the finished product polyvinyl chloride resin. The surface resistivity of the prepared conductive PVC special resin is below 107 ohms. Compared with the prior art, the conductive additive is added in the polymerization production process, so that the distribution of the conductive additive is more uniform, the construction of a conductive network is firmer, and the surface resistivity of the resin is easier to reduce.

The invention discloses a high-flame-retardant EVA (Ethylene Vinyl Acetate) foaming material and a preparation method thereof, and relates to the technical field of high polymer materials. The high-flame-retardant EVA foaming material is prepared from a coated functional filler, a nitrogen-doped graphene-like carbon / cobalt nano composite material, EVA, stearic acid, zinc stearate, zinc oxide, a foaming agent AC and dicumyl peroxide, a core-shell combined filler composed of a coated functional filler and a nitrogen-doped graphene-like carbon / cobalt nano composite material is uniformly distributed in an EVA three-dimensional network cross-linked matrix to form a porous material with a uniform closed cell structure, so that the flame retardant property is improved by virtue of a physical barrier effect and a catalytic carbon formation mechanism, and an efficient and stable conductive network is also constructed; the antistatic performance is optimized, and the application range of the EVA foaming material is widened.

The utility model belongs to the technical field of printing paper, and particularly relates to anti-adhesion printing paper for digital printing, which comprises a basic paper layer, a water absorption auxiliary layer arranged at the top of the basic paper layer, an antistatic layer arranged inside the basic paper layer, and an anti-adhesion functional layer arranged at the top of the water absorption auxiliary layer. The bottom of the base paper layer is provided with the blocking layer, the edge of the base paper layer is provided with a tearing line and a positioning hole, the interior of the water absorption auxiliary layer is communicated with a pore structure so that water in digital printing ink can be rapidly absorbed, ink fixation can be accelerated, and the adhesion risk caused by water residue can be reduced; the anti-adhesion functional layer forms a continuous film layer, stable adhesion of anti-adhesion particles is ensured, the blocking layer prevents ink on the front side from permeating to the back side, the blocking layer is matched with the anti-adhesion functional layer on the front side to achieve the double-sided anti-adhesion effect, meanwhile, when the paper is torn, the paper is broken along a hole line, and the edge is neat and free of burrs; and accurate alignment during paper conveying is ensured.

The invention discloses an antistatic photocureable coating and a preparation method and application thereof, and belongs to the technical field of photocureable paints.The preparation method comprises the following steps that S1, a single-walled carbon nanotube, a polymeric dispersant and a connecting agent are placed in a defoaming machine, mixed defoaming is conducted under the vacuum condition, then photocureable resin is added into the defoaming machine, and the mixture is stirred to be uniform; mixing and defoaming under a vacuum condition to obtain a mixture; s2, transferring the mixture into a three-roller grinding machine, and grinding and dispersing for 1-3 times at the rotating speed of 500rpm, so as to obtain the anti-static light-cured resin; s3, uniformly mixing anti-static light-cured resin, a light-cured monomer, an initiator and an auxiliary agent to obtain an anti-static light-cured coating; the preparation method disclosed by the invention is simple and efficient, low in production cost and easy to realize large-scale production; the prepared coating is good in anti-static effect, high in light transmittance and low in haze, can meet various application scenes of optical thin films, and has extremely high commercial value.

The invention relates to the technical field of adhesive tapes, and discloses a high-viscosity anti-static double-sided glass fiber adhesive tape and a preparation method thereof.The adhesive is obtained by polymerizing prepared dicarboxyl quaternary ammonium salt diphenol, 4, 4-dichlorodiphenyl sulfone and bisphenol A and then mixing the mixture with bisphenol A epoxy resin, epoxidized carbon nanotubes and the like; and uniformly coating the glass fiber cloth subjected to low-temperature plasma treatment to obtain the high-viscosity anti-static double-sided glass fiber adhesive tape. The carbon nanotubes can form an infinite continuous conductive network on the surface of the adhesive tape, and the quaternary ammonium salt groups can absorb moisture in air, so that leakage of electrostatic charges and enhancement of antibacterial performance are promoted; dicarboxyl contained in dicarboxyl quaternary ammonium salt polysulfone can generate chemical crosslinking reaction with epoxy resin and epoxy groups of the epoxidized carbon nanotubes to form a three-dimensional crosslinking structure of an interpenetrating network, so that the adhesive tape matrix is endowed with better impact resistance, and the effects of strengthening and toughening are achieved.

The invention discloses a carbon nanotube antistatic protective film and a preparation method thereof, and belongs to the technical field of silicone rubber antistatic protective films. The preparation method of the carbon nanotube antistatic protective film comprises the following steps: adding a CM (at) CNTs-PDA antistatic agent and 1-2 parts of a cross-linking agent into silicone rubber, uniformly stirring and mixing, adding a carbon nanotube antistatic silicone rubber material into a grinding machine, grinding for 9-12 times under the condition that the pressure between rollers is 4.5-5.5 kg, and then cooling to room temperature to obtain the carbon nanotube antistatic protective film. And curing the coating film at normal temperature to obtain the carbon nanotube antistatic protective film. According to the invention, CM (at) CNTs-PDA is adopted as an antistatic agent to be doped with low-viscosity silicone rubber, and the dispersity of the carbon nanotubes in a silicone rubber system is improved, so that the prepared organosilicon-based protective film has fewer carbon dots, glue dots and foreign matters, has permanent antistatic performance, good stability, excellent high-temperature resistance and low surface resistivity, and effectively meets the use requirements.

The present invention relates to the technical field of ABS composite materials, and discloses an anti-static ABS composite material based on carbon nanotubes and a preparation method thereof. The anti-static ABS composite material prepared by the present invention comprises the following raw materials in parts by weight: 70-90 parts of ABS resin, 8-15 parts of polycarbonate resin, 5-12 parts of composite conductive filler, 1-3 parts of lubricant, 5-10 parts of modified heat-resistant agent, and 0.2-0.4 parts of antioxidant; it uses ABS resin as a matrix resin, and adds polycarbonate resin to improve the comprehensive performance of the composite material; uses carbon nanotubes as a substrate, and prepares composite conductive fillers by modification to improve the conductivity of the matrix, thereby improving the antistatic performance, mechanical properties and impact strength of the matrix; the addition of the modified heat-resistant agent improves the heat resistance of the matrix.

The invention relates to the technical field of high polymer materials, and discloses an antistatic polyolefin master batch and a production process thereof. The polyolefin master batch is prepared from the following raw materials in parts by weight: 80 to 100 parts of polyolefin resin, 15 to 25 parts of a composite antistatic agent, 5 to 10 parts of a modified toughening agent, 1.5 to 3.5 parts of an antioxidant and 2 to 4 parts of a lubricating agent, according to the master batch, polyolefin resin is adopted as matrix resin, the antistatic property of the master batch is improved by adding the composite antistatic agent, and the mechanical property of the master batch is improved by adding the modified flexibilizer; wherein the composite antistatic agent adopts an organic-inorganic combination mode, so that the master batch has permanent antistatic performance; the modified toughening agent is obtained by modifying maleic anhydride grafted polyethylene, so that the mechanical property of the master batch is improved.

This invention relates to the field of polymer materials technology and discloses an antistatic PC / ABS composite material and its preparation method. The PC / ABS composite material of this invention comprises the following raw materials in parts by weight: 45-65 parts PC resin, 15-25 parts ABS resin, 5-10 parts composite macromolecular antistatic agent, 4-8 parts toughening agent, 1-3 parts antioxidant, 0.5-1.5 parts lubricant, 3-7 parts inorganic filler, and 1-2 parts coupling agent. The composite macromolecular antistatic agent added to this composite material differs from the addition of traditional small-molecule antistatic agents and conductive fillers, possessing a permanent antistatic effect, good compatibility, and minimal impact on mechanical properties.

The present invention relates to the technical field of pipeline material production, and in particular to a heat-insulating HDPE pipeline material and production equipment. Technical problem: HDPE pipelines are prone to generate static electricity, which may cause the inner wall of the pipeline to absorb particles or powders in the liquid, affecting the material transportation efficiency. The production steps of the heat-insulating HDPE pipeline are as follows: Step 1: Put high-density polyethylene resin, antioxidant, UV stabilizer, pigment, lubricant and flame retardant into a stirring kettle and stir until mixed; Step 2: Put the mixed material into an extruder, further stir and melt the material through the extruder, and then extrude to form an HDPE pipeline and cool it; Step 3: Use an adhesive to bond the polyurethane insulation layer to the outer protective layer of the HDPE pipeline in step 2. The present invention reduces the surface resistivity of the HDPE pipeline and accelerates the dissipation of static charge by adding an antistatic agent to the middle of the high-density polyethylene resin, thereby effectively preventing the accumulation of static electricity and the occurrence of static electricity discharge.

The invention discloses a ceramic coating as well as a preparation method and application thereof. The ceramic coating is prepared from the following raw materials in parts by weight: 40 to 70 parts of chromic oxide; 20-50 parts of manganese oxide and / or zinc oxide; 3-4 parts of silicon oxide; and 2-3 parts of calcium oxide. Chromium oxide with low secondary electron emission coefficient and manganese oxide or zinc oxide with low surface resistivity are combined to prepare the ceramic coating, and after the ceramic coating is sprayed on the surface of the aluminum oxide ceramic, the defects of high secondary electron emission coefficient, low vacuum surface flashover voltage and the like of the aluminum oxide ceramic are overcome; more importantly, the power loss caused by the coating obtained by utilizing the ceramic coating cannot be obviously improved, so that the ceramic coating is applicable to microfocus X-ray tubes and high-power broadband gyrotron traveling wave tubes as a functional coating.

The invention discloses a preparation method of a natural growth type titanium metal bipolar plate for electrolysis of water. The preparation method comprises the following operation steps: pretreatment of a titanium plate: removing stains on the surface of the titanium plate; coating and calcining with butyl titanate: coating the titanium plate subjected to coating treatment with the butyl titanate solution for 12 times, putting the titanium plate into a tubular furnace, calcining at 550 DEG C, cooling to obtain a titanium oxide layer, and cutting the calcined sample into a proper size; and (4) taking out the sample in the step (3), directly putting the sample into a tubular furnace, introducing hydrogen, and setting the reaction parameter to be 930 DEG C / 10min and the temperature rising rate to be 10 DEG C / min, thereby obtaining the high-temperature-resistant carbon nanotube. The surface resistivity of the titanium substrate prepared by the process is reduced, the conductivity is improved, and the problems of low conductivity and short service life of a pure titanium substrate of a bipolar plate in hydrogen production by electrolysis of water are solved.

A display device is provided, comprising a cover layer and an adhesive layer disposed on the cover layer. The adhesive layer has a size of less than 5 × 10⁻⁶. 13 Surface resistivity of Ω / square and less than 4×10 10 The volume resistivity is Ω-meter, and the adhesive layer is essentially free of any non-polymer ionic compounds. Advantageously, the adhesive layer reduces electrostatic charge buildup on the cover layer while also reducing electronic bright spots along the edges of the display device or near the aperture features of the display device.

The invention relates to the technical field of antistatic compositions, and discloses an antistatic composition and a preparation method thereof. The antistatic composition is prepared by taking the polyolefin resin as matrix resin, adding the conductive filler, the macromolecular antistatic agent and other functional aids and carrying out melt blending, so that the antistatic performance of the composition is improved, and the comprehensive performance of the composition is also improved; wherein the conductive filler forms a conductive network in a matrix through the synergistic effect of MOF, MoS2 QDs and polydopamine, so that the surface resistivity of the matrix material is reduced, and the antistatic performance of the matrix is further improved; the macromolecular antistatic agent has a synergistic effect with the conductive filler and the carbon black to improve the antistatic performance of the matrix, and during melt blending processing, the macromolecular antistatic agent can be grafted in the matrix resin by utilizing the initiator, so that the antistatic performance and the wear resistance of the matrix are further improved.

This invention relates to a high-impact polyethylene composite modified plastic and its preparation method, belonging to the field of polyethylene plastics technology. The invention involves creating a self-made modifier and using this modifier to modify chlorinated polyethylene to obtain modified chlorinated polyethylene. This modified chlorinated polyethylene is then blended with polyethylene and silica to obtain a composite modified plastic. The siloxane groups at the end of the modifier can combine with the hydroxyl groups on the silica surface, improving the interfacial bonding between the filler and the polymer, and enhancing the mechanical properties of the material. The pyridine ring forms a stable conjugated π-electron system with benzotriazole, synergistically expanding the ultraviolet absorption range of the material, thereby enhancing its ultraviolet absorption performance. The quaternary ammonium salt structure formed by the combination of the modifier and chlorinated polyethylene can form ion-conducting channels in the polymer matrix, reducing surface charge accumulation and lowering surface resistivity, thus endowing the material with excellent antistatic properties.

The invention relates to the technical field of adhesive tapes, and discloses a high-viscosity antistatic double-sided glass fiber adhesive tape and a preparation method thereof. Prepared dicarboxyl quaternary ammonium salt diphenol is polymerized with 4,4-dichlorodiphenyl sulfone and bisphenol A, and then mixed with bisphenol A epoxy resin, epoxidized carbon nanotubes and the like to obtain an adhesive, which is uniformly coated on a glass fiber cloth treated with low-temperature plasma to obtain the high-viscosity antistatic double-sided glass fiber adhesive tape; the carbon nanotubes can form an infinitely continuous conductive network on the surface of the adhesive tape, the quaternary ammonium salt group can absorb moisture in the air, promote the leakage of static charge and enhance antibacterial performance; the dicarboxyl group contained in the dicarboxyl quaternary ammonium salt polysulfone can produce a chemical crosslinking reaction with the epoxy resin and the epoxy group of the epoxidized carbon nanotube to form a three-dimensional crosslinking structure of an interpenetrating network, thereby giving the adhesive tape matrix better impact resistance and playing a role of strengthening and toughening.

The application discloses a weakly conductive polypropylene composite material and a preparation method thereof, which is prepared from 0.1-1 parts of carbon nanotubes, 5-25 parts of inorganic fillers, 0.3-0.9 parts of antioxidants, 0.1-0.5 parts of processing aids, 49-85 parts of polypropylene, 5-10 parts of polyethylene, 3-10 parts of toughening agents and 2-6 parts of compatilizers according to weight parts; the carbon nanotubes are treated at a high temperature above 1200 DEG C. The weakly conductive effect is achieved by adding the carbon nanotubes, the adding amount is very low, the surface resistivity of the polypropylene can be reduced, and the mechanical property of the material is less affected.

The invention relates to the technical field of PET, and discloses a preparation method of an antistatic wear-resistant protective film material, 100 parts by weight of polyethylene glycol terephthalate and 5-15 parts by weight of a hydrophobic polyaniline grafted polyester antistatic agent are blended, extruded and stretched to obtain the antistatic wear-resistant protective film material. The antistatic agent contains a main chain of a terephthalic acid glycol copolyester molecule, has good similar compatibility with PET polyester and does not influence the mechanical property of the PET protective film, and meanwhile, a side chain contains a large amount of polyaniline conductive polymer which is uniformly dispersed in a PET matrix, so that the surface resistivity of the PET protective film is remarkably reduced, the antistatic performance is improved, and the antistatic effect is good. The film has good practical application in the aspects of vehicle body protection films, display screen protection films, LED lamps and the like.

The invention relates to the technical field of pre-oxidized fibers, and particularly discloses a cotton spinning pre-oxidized fiber and a preparation method thereof. The preparation method comprises the following steps: mixing a polyacrylonitrile precursor with a first modified oil agent to obtain a pretreated precursor; the first modified oil agent comprises polytetrafluoroethylene dispersion liquid, nano aluminum oxide and a silane coupling agent; carrying out gradient pre-oxidation on the pre-treated precursor in an air atmosphere under the conditions that the temperature is 215-255 DEG C and the tension is 1650-2100 cN, so as to obtain a pre-oxidized fiber; immersing the pre-oxidized fiber into a second modified oiling agent for oiling and curling to obtain a cotton spinning pre-oxidized fiber; the second modified oiling agent comprises an antistatic agent, a bundling agent and a moisture absorption friction increasing agent. According to the invention, the structural stability and antistatic property of the fiber are improved by controlling the condition parameters of pre-oxidation and optimizing the components and proportion of the first modified oil agent and the second modified oil agent, so that the spinnability of the cotton spinning pre-oxidized fiber is improved, and high-quality and large-scale cotton spinning processing of the pre-oxidized fiber is realized.