13results about How to "Improved performance against UV aging" patented technology

The invention discloses an anti-corrosion matte PE high polymer material and application thereof in wind power and photovoltaic power generation, and belongs to the technical field of PE high polymer materials, the anti-corrosion matte PE high polymer material comprises the following components by weight: 100 parts of a polyethylene resin matrix; 0.5-3 parts of a composite anti-aging system; 5-30 parts of a multifunctional synergistic matting anti-corrosion filler; 0.1 to 1.5 parts of a rare earth complex weather-resistant synergist; 0.5-2 parts of a processing aid; the polyethylene resin matrix is high-density polyethylene, linear low-density polyethylene or a blend of the high-density polyethylene and the linear low-density polyethylene, and the melt flow rate of the polyethylene resin matrix is 0.5-5g / 10min under the condition of 190 DEG C / 2.16 kg. The surface double-modified layered silicate and the basic zinc phosphate are compounded to serve as the multifunctional synergistic matting corrosion-resistant filler, the material is endowed with excellent corrosion resistance, the good matting effect and weather resistance are achieved, meanwhile, the special structure of the filler can effectively inhibit corrosion medium permeation, and the corrosion resistance of the material is improved. And the service life of the material in a severe environment is prolonged.

The application discloses a kind of preparation methods for high transparent polyethylene film additive, belong to polyethylene technical field, to solve the technical problems of high transparent polyethylene film in prior art, high production cost, aging resistance performance needs to be further provided, including nucleating agent grafting quaternary ammonium salt modified nanosilica and low-density polyethylene are mixed, initiator is added, by melt grafting reaction in twin-screw extruder, reaction is finished, extrusion, cooling, granulation, obtain intermediate I;Intermediate I, antioxidant 168, antioxidant 1076, zinc stearate, antistatic agent 1800 and mustard acid amide are mixed, to obtain high transparent polyethylene film additive;The high transparent polyethylene film additive prepared in the application is mixed with low-density polyethylene, and the processing performance is good, to obtain the high transparent polyethylene film with lower cost;This film not only has good transparency and tensile property, but also has good aging resistance.

This invention discloses a high-temperature resistant honeycomb core paper, its preparation method, and its application. The paper has a three-layer composite structure, including two outer layers and an intermediate layer. The two outer layers are identical in composition, consisting of high-temperature resistant chopped fibers and high-temperature resistant resin. The intermediate layer, located between the two outer layers, comprises high-temperature resistant micro / nano fibers, high-temperature resistant pulp fibers, high-temperature resistant chopped fibers, and high-temperature resistant resin. The high-temperature resistant micro / nano fibers are fibrillated PBO fibers. The high-temperature resistant pulp fibers are PBO pulp fibers. The mass ratio of the high-temperature resistant micro / nano fibers, high-temperature resistant pulp fibers, and high-temperature resistant chopped fibers is 3–15:15–35:50–75. Through material structure design, this invention effectively improves the paper's high-temperature resistance (>250℃) and UV aging resistance.

The present application provides a kind of UV reinforced polyvinyl butyral modified asphalt and its preparation method.The modified asphalt is based on matrix asphalt, polyvinyl butyral, photoinitiator and crosslinking aid are added, and the uniform dispersion and crosslinking reaction of polyvinyl butyral in asphalt system are promoted by UV light, so as to improve the ultraviolet aging resistance, bonding strength and weather resistance of asphalt.The preparation steps include: heating the matrix asphalt to 140-190℃, adding polyvinyl butyral shear stirring, then adding photoinitiator and crosslinking aid, and continuing to stir under UV light to form a uniform modified asphalt system.The method can significantly improve the aging resistance, high temperature stability and low temperature crack resistance of modified asphalt, and is suitable for road paving, bridge waterproofing and other high durability engineering fields, and has good industrial application prospect.

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 utility model discloses a modularly-assembled corrosion-resistant injection-molded shell which comprises an injection-molded shell main body, an assembling module mechanism is arranged in the injection-molded shell main body, an injection-molded cover plate is arranged on the upper surface of the injection-molded shell main body, and symmetrical positioning plates are installed on the outer surface of the injection-molded shell main body. Symmetrical adaptive mounting holes are formed in the upper surfaces of the two positioning plates correspondingly, a locking mechanism is arranged on the outer surface of the injection molding shell body, the injection molding shell body comprises two first positioning frames, and two sets of second positioning frames are installed in the injection molding shell body. And sealing gaskets are arranged in the two first positioning frames and the two groups of second positioning frames. According to the device, through cooperation of the assembly plate and the positioning frame, modular assembly can be conveniently conducted on the interior of the injection molding shell body, the applicability of the injection molding shell body is improved, the acid and alkali resistance of the surface of the injection molding shell body can be improved through the nanometer titanium dioxide coating, and the oleophobicity of the surface of the injection molding shell body is improved.

This invention relates to the field of polymer molding materials. A functional color-printed composite packaging film of ultra-high molecular weight polyethylene is disclosed, which is formed by curing a polyethylene film substrate, p-hydroxybenzoic acid, polyethylene glycol diacrylate, laccase, and acrylate ink monomers. The film is formed by covalently coupling quinone radicals generated from p-hydroxybenzoic acid and polyethylene glycol diacrylate under laccase catalysis to the substrate surface, forming a polyethylene glycol grafted interlayer. Subsequently, ultraviolet light-initiated polymerization is performed on the surface of the interlayer to form a cross-linked and cured ink layer. This method utilizes the covalently bonded grafted interlayer to block the rearrangement of non-polar molecular chains of the substrate to the surface, maintaining surface polarity stability, and enabling the ink layer and substrate to possess the highest standard peel strength, with no blistering or peeling of the ink layer under boiling water conditions.

This invention discloses a waterproof mesh film for plastic greenhouses, relating to the technical field of high-toughness, UV-resistant polymer compositions. The waterproof mesh film for plastic greenhouses is prepared from raw materials comprising the following parts by weight: 60-80 parts polyolefin resin, 15-35 parts polyolefin elastomer, 10-25 parts filler and reinforcing agent, 0.3-1.5 parts light stabilizer, 0.2-0.8 parts antioxidant, and 0.5-2 parts processing aid. The addition of light stabilizer and antioxidant, and their synergistic effect, effectively prevents the photo-oxidation reaction and thermal oxidative degradation of polymer materials under ultraviolet radiation, significantly improving the UV aging resistance of the waterproof mesh film and reducing problems such as material performance deterioration, discoloration, fading, and decreased waterproof performance caused by long-term outdoor use. The waterproof mesh film of this invention exhibits significant advantages in flexibility and impact resistance, making it less prone to tearing and damage when facing harsh weather, frequent folding, or contact with sharp objects, thus extending its service life.

The application relates to the paint technology field, and discloses an environment-friendly anti-aging automobile repair paint and a preparation method thereof; the operation steps are as follows: water-based polyurethane is added into deionized water and uniformly mixed; a defoaming agent, a leveling agent, an anti-aging agent and color paste are continuously stirred and uniformly mixed; and a water-based isocyanate curing agent is added to obtain the environment-friendly anti-aging automobile repair paint. In the scheme, the lignin is introduced into the water-based polyurethane and the anti-aging agent respectively, the dispersity of the lignin in the environment-friendly anti-aging automobile repair paint is improved, and the anti-aging property and the environmental protection property of the automobile repair paint can be effectively improved.

The invention relates to the technical field of high-weather-resistance epoxy coatings, and discloses a high-weather-resistance epoxy coating and a preparation method thereof.The high-weather-resistance epoxy coating is prepared from 100 parts of modified epoxy resin, 20-40 parts of pigment, 0.5-2 parts of ultraviolet absorbent, 0.5-2 parts of antioxidant, 0.5-1.5 parts of dispersing agent, 0.2-0.8 part of defoaming agent, 10-20 parts of solvent, 30-60 parts of curing agent and 1-5 parts of accelerant. According to the scheme, an organic silicon-epoxy resin compound is used as matrix resin, and meanwhile, an organic silicon unit is introduced into an epoxy resin main chain by utilizing a molecular grafting technology, so that an aromatic ether bond easy to photodecompose in the epoxy resin can be shielded, and the ultraviolet aging resistance of the coating is further improved; meanwhile, after the modified epoxy resin is mixed with the pigment, the ultraviolet absorbent, the antioxidant, the dispersing agent, the defoaming agent, the solvent, the curing agent and the accelerant according to the proportion, the weather resistance of the coating is obviously improved compared with that of a common epoxy coating.

The utility model discloses a kind of steel bridge deck pavement structures, belong to bridge engineering technical field.The structure includes metal plate, first bonding layer, concrete layer, polymer fiber web, second bonding layer, pitch layer, polymer fiber web is laid above concrete layer, and is connected with the storage tank being set in bridge deck one side, light stabilizer aqueous solution is stored in storage tank, polymer fiber web is adsorbed and evenly dispersed to entire pavement layer by capillary action.Light stabilizer is continuously supplemented, the anti-ultraviolet aging performance and service life of pavement material are significantly improved, especially suitable for high ultraviolet radiation area, with good engineering application prospect.

This invention relates to the field of cable technology and discloses a composite insulated weather-resistant wire. The composite insulated weather-resistant wire of this invention is composed of a conductor core, a first insulation layer, a heat dissipation buffer layer, a second insulation layer, and a polyvinyl chloride (PVC) sheath material. The PVC sheath material includes 100 parts by weight of PVC, 35-50 parts by weight of plasticizer, 3-12 parts by weight of cyanolignin, and 5-20 parts by weight of filler, etc. The cyanolignin contains a large number of phenolic hydroxyl groups, which can capture oxygen free radicals, hydroxyl free radicals, etc. generated by the photo-oxidation free radical chain reaction, thereby terminating the photo-oxidation process and exhibiting excellent UV resistance. At the same time, the lignin introduces cyano groups, which can absorb ultraviolet light energy, transition from the ground state to the excited state, and return to the ground state, releasing energy. It also has excellent ultraviolet absorption performance. Under the synergistic effect, the UV aging resistance of PVC is significantly improved.

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.