25results about How to "Improve aging performance" patented technology

The invention discloses a glass fiber reinforced nylon material with high alcoholysis resistance, and relates to the technical field of glass fiber reinforced nylon materials. Raw materials of the high-strength and high-toughness composite material comprise the following components in parts by weight: 30-43 parts of PA46, 20-25 parts of PA66, 15-7 parts of PA115, 3-5 parts of bio-based nylon, 20-45 parts of alkali-free glass fibers, 1-3 parts of polyethylene, 0.5-3 parts of an antioxidant, 0.2-3 parts of a heat stabilizer, 0.1-5 parts of a compatilizer, 1-5 parts of a flexibilizer, 0.2-0.5 part of a hydrolysis-resistant agent, 1-2 parts of an ultraviolet light absorber, 0.1-2 parts of a silane coupling agent, 0.1-0.5 part of a nucleating agent, 1-5 parts of hollow glass beads and 3-8 parts of mica. The glass fiber reinforced nylon material is prepared by mixing the raw materials according to the set proportion and sequence, the glass fiber reinforced fiber material with high alcoholysis resistance is finally obtained, a small amount of mica is added into the matrix raw materials, the insulativity and heat resistance of the prepared glass fiber reinforced nylon material are improved to a certain extent, and the service life of the glass fiber reinforced nylon material is prolonged. The range of products made of the material is expanded, the stability of the products is improved, and the products can resist corrosion of strong acid and strong alkali.

The invention belongs to the technical field of polyurethane self-skinning foam, and particularly relates to an anti-aging high-flame-retardant polyurethane self-skinning foam material as well as a preparation method and application thereof. The aging-resistant high-flame-retardant polyurethane self-skinning foam material is prepared from a component A and a component B according to the mass ratio of 100: (45-55), the component A comprises polyether polyol 1, polymer polyol, a silane coupling agent, a chain extender, a flame retardant A, a flame retardant B, a foaming agent, a foam stabilizer and a composite catalyst, and the component B comprises polyether polyol 2, a composite antioxidant, pure MDI and liquefied MDI. A product prepared from the anti-aging high-flame-retardant polyurethane self-skinning foam material disclosed by the invention has excellent high temperature resistance, damp heat resistance, low temperature resistance, hydrophobicity and flame-retardant effect, so that the polyurethane self-skinning foam material can cope with different environmental changes; the invention further provides a preparation method and application thereof, the preparation process is simple, and the prepared product can be applied to various occasions.

The invention discloses a modified radix asparagi polyurea intermediate paint for a hydroelectric dam steel gate as well as a preparation method and application thereof. The intermediate paint is prepared by mixing a component A and a component B according to a mass ratio of (3-5): 1; the component A comprises epoxy modified polyaspartic acid ester resin A, epoxy modified polyaspartic acid ester resin B, pigment, filler, a mixed solvent, a dispersing agent, a defoaming agent and a rheological additive; and the component B comprises an isocyanate mixture, a reactive diluent PEC and butyl acetate. The invention further discloses the preparation method of the modified polyaspartic polyurea intermediate paint for the hydroelectric dam steel gate. The modified radix asparagi polyurea intermediate paint for the hydroelectric dam steel gate is low in odor, the construction solid content is larger than 90%, the modified radix asparagi polyurea intermediate paint belongs to an environment-friendly green product, compared with an existing common thick-build epoxy intermediate paint, the drying speed is high, the ultraviolet aging resistance is good, the all-weather construction requirement of the wet-on-wet spraying technology can be met, and therefore the construction efficiency is greatly improved, and the construction cost is reduced. And a formed paint film is good in drawing adhesive force and excellent in mechanical property.

The invention discloses a high-performance, weather-resistant and yellowing-resistant polyurethane adhesive as well as a preparation method and application thereof. The high-performance, yellowing-resistant and weather-resistant polyurethane adhesive is prepared from the following raw materials in parts by weight: 10 parts of isocyanurate polyol, 18 to 32 parts of isocyanate, 198 to 689 parts of polymer polyol, 37 to 90 parts of polyisocyanate, 26 to 164 parts of plasticizer and 1.3 to 8.2 parts of catalyst. The isocyanate adopted by the invention is aliphatic and / or alicyclic isocyanate and a polymer thereof, no anti-yellowing agent or light stabilizer is added, the problem of yellowing of polyurethane can be thoroughly solved, the high-activity micromolecular isocyanurate polyol reacts with excessive isocyanate, and the yellowing resistance of the polyurethane is improved. Reacting the obtained isocyanate oligomer with excessive polymer polyol under the assistance of a small amount of catalyst, so that the isocyanate is completely reacted to obtain a hydroxyl-terminated polyurethane prepolymer; and reacting with excessive polyisocyanic acid to obtain the weather-resistant and yellowing-resistant polyurethane adhesive with a certain structure, and keeping excellent physical and mechanical properties at the same time.

The invention belongs to the technical field of road asphalt, and particularly relates to composite high-viscosity modified asphalt and a preparation method thereof, and the composite high-viscosity modified asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 2-15 parts of a macromolecular copolymer, 3-8 parts of a petroleum resin modifier, 5-10 parts of a cosolvent, 0-5 parts of polyethylene, 0.1-0.4 part of a stabilizer and 0.2-0.5 part of a coupling agent. According to the technical scheme, modifiers such as the petroleum resin and the polyethylene are compounded and modified with the matrix asphalt, so that the compatibility problem can be solved, the segregation phenomenon is avoided, and the performance stability of the asphalt is effectively improved on the basis of keeping respective basic characteristics; the novel composite modified high-viscosity asphalt with enhanced or optimized characteristics is obtained.

The invention discloses a core-shell toughening agent as well as a preparation method and application thereof, and the preparation method of the core-shell toughening agent comprises the following steps: obtaining styrene-butadiene latex with double particle size distribution; grafting: mixing water, an emulsifier, acrylate, methyl methacrylate, a cross-linking agent, an initiator, sodium formaldehyde sulfoxylate and styrene-butadiene latex for first-step grafting, then adding sodium formaldehyde sulfoxylate and a monomer mixture containing the initiator, the cross-linking agent and styrene, and performing second-step grafting to obtain an emulsion; and demulsifying, namely demulsifying the emulsion by adopting inorganic salt to produce sand, and filtering and drying to obtain the core-shell toughening agent. The modified plastic has the advantages of effectively improving the low-temperature impact resistance and yellowing resistance of the plastic when being applied to the plastic, and the like.

The invention relates to the technical field of photovoltaic cables, in particular to a waterproof and anti-aging photovoltaic cable and a preparation technology thereof.The preparation technology comprises the following steps that LDPE, LLDPE, modified EVA, inorganic filler, a photoinitiator, a cross-linking agent and auxiliaries are blended and mixed, and an insulating material is obtained; and extruding, heating and irradiating the insulating material to form an insulating layer, thereby obtaining the photovoltaic cable. The modified EVA is obtained by alcoholysis of EVA and reaction with acyl chloride compounds, and the acyl chloride compounds comprise trimethyl heptanoyl chloride and trimethyl hexanoyl chloride. According to the invention, trimethylhexanoyl chloride, trimethylheptanoyl chloride and an EVA alcoholysis product are subjected to a reaction, such that modified EVA is prepared. The tertiary carbonic ester isononanoate and the neodecanoate have branched chains, so that the tertiary carbonic ester isononanoate and the neodecanoate have higher hydrolytic stability, and the water resistance of the insulating layer is effectively improved; and the barrier effect of a water channel is improved, permeation of water can be prevented, slippage of the water under extrusion force is reduced, and the water tree branch aging resistance of the insulating layer is improved.

The invention relates to the technical field of heat stabilizers, in particular to the field of IPC C08K5, and more particularly relates to a PVC heat stabilizer and application thereof. The invention relates to a high-temperature-resistant flame retardant, which is prepared from the following components in percentage by weight: 5 to 20 percent of organic acid zinc salt, 2 to 15 percent of beta-diketone, 1 to 5 percent of polyhydric alcohol, 0.5 to 2 percent of nucleating agent, 1 to 10 percent of fatty acid lubricant and the balance of ternary hydrotalcite. When the modified PVC crystal plate is applied to the PVC crystal plate, the initial whiteness is considered, the long-term heat resistance and color fastness are prolonged, and meanwhile, the lasting heat resistance can be increased.

The present application relates to the field of degradable tapes, and in particular to a degradable tape and its preparation method and application. The degradable tape comprises a degradable base layer, a degradable adhesive layer on the surface of the degradable base layer, and a release layer having a protective effect on the other side of the degradable adhesive layer. The raw materials of the degradable base layer, in parts by mass, include: 100-150 parts of base resin, 40-60 parts of filler, 5-10 parts of lubricant, 20-40 parts of filler, and 1-10 parts of auxiliary agent. The degradable tape prepared in the present application can greatly improve its waterproof, mechanical and aging resistance properties while ensuring its excellent adhesion, effectively solving the performance problems of the degradable tapes on the existing market, having a very excellent market prospect, and further broadening the application field and use environment of the degradable tape. The preparation method is simple and easy to implement, providing a solution basis for subsequent large-scale production.

The present invention provides a flexible cable for energy storage batteries and its production process, the cable includes a main wire core, a power storage wire core, and a cable outer sheath; wherein the main wire core and the power storage wire core are arranged side by side; the cable outer sheath is arranged outside the main wire core and the power storage wire core; the power storage wire core is composed of a plurality of wire cores twisted together and then wrapped with non-woven fabric; each of the wire cores is composed of a power storage conductor, a graphene fiber layer, a metal composite layer, a power storage protective layer, and a power storage outer sheath from the inside to the outside. The structural design and material selection of the present invention fully meet the battery acid resistance, aging resistance, weather resistance, moisture resistance, and UV resistance of the cable for the energy storage battery system, and has outstanding characteristics such as high life, high insulation, and softness. Under certain circumstances, it can be used as an energy storage device to store a small amount of electrical energy for use in instrument control circuits.

The invention discloses an anti-aging cable and a preparation method thereof, and relates to the technical field of cables. According to the preparation method, graphene oxide is treated firstly, so that the dispersity of graphene in a linear low-density polyethylene matrix is enhanced, meanwhile, the compatibility between polyethylene and polyimide is improved, thermal motion of a polyethylene molecular chain is hindered, the mechanical property and low expansion property of the cable are enhanced, and then water tree aging resistance is achieved; according to the present invention, the composite material is used as the insulating material and the sheath material to coat the wire core and the wire made of the conductive alloy, the coupling plasma treatment is performed on the insulating layer, and the surface chemical composition reconstruction is performed, such that the surface hydrophobicity can be achieved through the insulating layer after the long-time work of the cable so as to enhance the water tree aging resistance of the cable;

The present invention provides a metal conductive silver paste and a preparation method and application thereof. The metal conductive silver paste of the present invention comprises the following components: a silver conductive paste, a silver source, a reducing agent and a stabilizer; wherein the silver valence in the silver source is zero or +1. The present invention adds a silver source to the traditional silver-coated cheap metal conductive paste, and under the action of the reducing agent, a new silver protective film can be formed on the surface of the cheap metal, thereby ensuring the conductivity of the silver and meeting the requirements of the later aging, solving the problem that the leaked cheap metal cannot be coated, thereby greatly improving the conductivity and aging performance of the paste.

The application discloses a biochar-mediated polyethylene microplastic photoaging method, and belongs to the technical field of microplastic degradation. The method comprises the following steps: taking biochar as an aging medium, degrading and aging polyethylene microplastics through a photoaging light source, and the mass ratio of the biochar to the polyethylene microplastics is 1:1.5-2.5. The method can effectively improve the aging effect of the polyethylene microplastics.

This invention discloses an impact-resistant polyethersulfone composite material and its preparation method. A modified polymer and a modified filler are melt-blended, and a pretreated film is prepared using a blown film process. The pretreated film and a modified nonwoven fabric are then laminated and hot-pressed to obtain the impact-resistant polyethersulfone composite material. The modified polyethersulfone is formed by the stepwise polymerization of 4,4'-difluoro-diphenyl sulfone and a dihydroxy monomer, and then hindered amine structures are grafted onto the molecular side to obtain the modified polymer. The hindered amine structures can capture free radicals, improving the material's anti-aging properties, while the disulfide bond structure can absorb energy when the material is impacted, enhancing its impact resistance. A modified filler is prepared by coating a composite filler formed from TiO2 and CeO2 with silica, which can efficiently absorb and convert ultraviolet light, improving the material's anti-aging properties. Simultaneously, the interlayer nonwoven fabric structure effectively prevents cracks from directly penetrating to adjacent layers, enhancing the material's impact resistance.

The present invention discloses a probe aging method, device, medium and equipment for a nitrogen oxygen sensor, the method comprising: generating multiple aging concentration intervals of the aging process according to the test range of the nitrogen oxygen sensor; selecting a target aging concentration interval from the multiple aging concentration intervals to generate an initial aging strategy; placing multiple nitrogen oxygen sensor probes to be aged into a preset gas pipeline, introducing aging gas into the preset gas pipeline, controlling the current concentration of the aging gas according to the initial aging strategy, and adjusting the aging time of each aging stage in real time according to the detection deviation change state of the nitrogen oxygen sensor in each aging stage until the aging process ends, so as to achieve a stable detection state of the nitrogen oxygen sensor probe. The present invention is more targeted in setting the concentration of the aging gas, and can flexibly adjust the actual aging time of each aging stage according to the aging state, thereby improving the aging efficiency and aging effect as well as the accuracy and stability of the nitrogen oxygen sensor in practical applications.

The utility model provides a laser packaging clamp, and relates to the technical field of laser packaging. The laser packaging clamp comprises a fixed operation table, radiating fins and a cooling liquid pipe, the bottom of the fixed operation table is fixedly connected with cooling fins. The cooling fins are fixedly connected with the cooling liquid pipe, and the cooling fins penetrate through the cooling liquid pipe and extend to the bottom of the cooling liquid pipe; wherein the heat dissipation fins are partially exposed in the air, and the heat dissipation rate of the heat dissipation fins is improved by increasing the heat dissipation area of the bottom of the fixed operation table; the heat dissipation fins are partially immersed in the cooling liquid, and the heat exchange rate of the heat dissipation fins and the cooling liquid is higher than that of air, so that the heat dissipation rate of the heat dissipation fins is improved by increasing the heat dissipation area of the bottom of the fixed operation table and increasing the heat exchange rate. By arranging the heat dissipation fins, the heat dissipation rate of the fixed operation table can be improved, meanwhile, the temperature of the fixed operation table can be accurately controlled, and the aging effect is improved.

The invention provides high-adhesion LED-UV metal printing ink and a preparation method thereof, and belongs to the technical field of ink. The preparation method comprises the following steps: preparing the surface modified nano composite powder; preparing a composite anti-aging agent; preparing an acrylate prepolymer; preparing a modified prepolymer; mixing to prepare the printing ink. The preparation method comprises the following steps: preparing nano-composite powder with ultraviolet resistance from tetrabutyl titanate and zinc nitrate hexahydrate as raw materials, blending the nano-composite powder into slurry, adding a sodium silicate solution and cerous sulfate, carrying out a reaction, carrying out surface modification on the nano-composite powder, inhibiting the photocatalytic activity of the nano-composite powder, and carrying out surface modification on the nano-composite powder. After the anti-aging agent is added into the ink, the anti-aging performance of the ink can be effectively improved, and the anti-discoloration performance of the ink can be improved.

The invention discloses a polyurethane adhesive with high weather resistance and yellowing resistance as well as a preparation method and application of the polyurethane adhesive. The polyurethane adhesive is prepared from the following components in parts by weight on the basis of 10 parts of isocyanate: 72 to 457 parts of polymer polyol, 36 to 111 parts of isocyanate oligomer, 30 to 385 parts of polyacrylate polyol, 15 to 191 parts of plasticizer and 0.8 to 9.5 parts of catalyst. The isocyanate adopted by the invention is aliphatic and / or alicyclic isocyanate and oligomer thereof, and no anti-yellowing agent or light stabilizer is added, so that the problem of yellowing of polyurethane can be thoroughly solved. The preparation method comprises the following steps: reacting aliphatic / alicyclic isocyanate with excessive polymer polyol under the assistance of a small amount of a catalyst, so that the low-activity aliphatic / alicyclic isocyanate is completely reacted to obtain a hydroxyl-terminated polyurethane prepolymer; then reacting with an isocyanate oligomer to completely react a terminal hydroxyl group to obtain a polyurethane prepolymer; and then carrying out chain extension by using polypropylene ester polyol to obtain the polyurethane adhesive with a certain structure and excellent weather resistance and yellowing resistance, and the polyurethane adhesive is widely applied to outdoor sports field materials.

The present invention provides a test device for an anti-corrosion layer of an isolation fence, which relates to the technical field of anti-corrosion layer testing of isolation fences, and comprises: a supporting frame and an anti-corrosion layer test unit B; a mounting unit is installed on the top of the supporting frame, and a row of isolation fence steel wires to be tested is arranged on the mounting unit; an anti-corrosion layer test unit A is installed on the supporting frame; a linkage unit is installed on the top of the mounting unit; two groups of anti-corrosion layer test units B are provided, and two groups of anti-corrosion layer test units B are installed on the supporting frame; two circular mounting shafts are provided, and the two circular mounting shafts are rotatably installed on four rectangular mounting blocks; according to the present invention, the two rows of rectangular fixed blocks can slightly rotate a certain angle under the force after the isolation fence steel wire is bent, thereby ensuring the bending effect of the isolation fence steel wire after the test; the problem that the isolation fence steel wire usually does not have a rotation function after being fixed, resulting in inaccurate bending test of the isolation fence steel wire is solved.

The invention relates to the technical field of rubber, in particular to vulcanized rubber and a preparation method thereof. The vulcanized rubber provided by the invention is prepared from the following raw materials in parts by mass: 100 parts of deproteinized natural latex; 2.5 to 20 parts of a vulcanization accelerator; 0.05 to 5 parts of a functional auxiliary agent; 0.2 to 3 parts of sulfur; 2-7 parts of zinc oxide; the nitrogen content of the denitrified white natural latex is 0.02 to 0.2 wt.%; the functional additive comprises one or more of serine, arginine, lysine and glutamic acid. In the invention, the functional additive is beneficial to promoting Zn ions to form a complex and promoting dispersion and solubility of the complex in a rubber matrix, and the formed amine-containing complex can promote ring opening and activation of a sulfur element, so that the utilization rate of zinc oxide and sulfur is increased, construction of a rubber matrix network is promoted, and network defects are reduced; therefore, the tensile property and the aging property of the deproteinized natural latex are improved.

The invention provides a rubber material and a preparation method thereof, and a packer rubber cylinder based on the rubber material, the rubber material comprises the following components by mass: 100 parts of hydrogenated nitrile rubber, 60-70 parts of carbon black, 2 parts of an anti-aging agent, 0.5 part of a plasticizer, and 6.5-7.0 parts of a peroxide vulcanizing agent; the anti-aging agent is RD (TMQ) or a mixture of the RD (TMQ) and styrenated phenol. According to the rubber material, the anti-aging agent RD (TMQ) or the mixture of RD (TMQ) and styrenated phenol is added, a very good anti-aging effect can be achieved, especially when RD (TMQ) and SP are combined for use, the aging performance of the rubber material can be further improved, it is indicated that when RD (TMQ) and SP are combined for use, a certain synergistic effect can be achieved, and the overall performance of the rubber material meets related standard requirements. When the rubber material provided by the invention is used for preparing the packer rubber cylinder, productization of high-cost-performance and high-resistance rubber cylinders can be realized.

The invention belongs to the technical field of railway turnout fasteners, and provides a high-strength low-rigidity rubber elastic base plate under an iron base plate and a preparation method thereof. The rubber composition comprises the following raw materials in parts by weight: 65-75 parts of natural rubber, 25-35 parts of butadiene rubber, 38-46 parts of carbon black, 22-28 parts of white carbon black, 5-7 parts of zinc oxide, 2-4 parts of stearic acid, 3-5 parts of an anti-aging agent, 2-6 parts of a coupling agent, 1-3 parts of microcrystalline wax, 3-5.4 parts of an accelerant and 1-3 parts of masterbatch S-80. The coupling agent is prepared from the following components in parts by weight: 1 to 3 parts of 3-octanoylthio-1-propyltriethoxysilane and 1 to 3 parts of ethyltrimethoxysilane. By means of the method, the production cost of the elastic base plate is reduced, and meanwhile the elastic base plate has the advantages of being high in strength and low in rigidity.

The invention relates to the field of drilling in the petroleum industry, and discloses a gel polymer, a preparation method and application thereof, and a water-based drilling fluid. The polymer contains a structural unit A, a structural unit B, a structural unit C and a structural unit D, the structural unit A is a structural unit with a structure as shown in a formula (1); the structural unit B is a structural unit with a structure as shown in a formula (2); the structural unit C is a structural unit with a structure as shown in a formula (3); the structural unit D is a structural unit with a structure as shown in a formula (4). The gel polymer provided by the invention can realize temperature-responsive expansion, and after the gel polymer is applied to the drilling fluid, the plugging effect and aging performance of the drilling fluid on macropores can be effectively improved. # imgabs0 #

The present invention provides a polymer functional filler prepared from coal gasification slag, a preparation method and application thereof, and belongs to the field of comprehensive utilization of solid waste. The present invention uses coal gasification slag as raw material, and performs micronization treatment on the coal gasification slag by dry ball milling or wet grinding, which can reduce the particle size of the coal gasification slag and improve its surface activity. At the same time, by using a surface modifier to perform surface modification treatment on the coal gasification slag, the polymer functional filler can have a good improvement effect on the mechanical processing performance, aging performance and adsorption performance of the polymer; the method provided by the present invention has a short process flow, and no acid dissolution or other processes are required in the preparation process, no waste slag is generated, and the preparation process is environmentally friendly and pollution-free.

The invention provides a stainless steel foil surface waterproof roll and a preparation method and application thereof, and belongs to the technical field of waterproof materials. The stainless steel foil surface waterproof coiled material sequentially comprises a stainless steel foil, an epoxy modified bonding transition layer, a modified glass fiber base, modified asphalt and a high-molecular polymer film from top to bottom, and the modified glass fiber base is obtained by modifying the glass fiber base through an epoxy modified bonding agent. Through a multi-layer composite structure of the stainless steel foil, the epoxy modified bonding transition layer, the modified glass fiber base, the modified asphalt and the high-molecular polymer film, a chemically compatible and physically entangled reinforced interface is constructed, and the key problems that a traditional metal surface waterproof roll is weak in interlayer bonding and easy to peel off are cooperatively solved; the overall performance of the waterproof roll is remarkably improved.