12results about How to "Good anti-aging performance" patented technology

This invention pertains to compositions of polymeric compounds, specifically a recycled rubber powder modified asphalt based on a renewable composite activator, its preparation method, and its application. The recycled rubber powder modified asphalt comprises a base asphalt and activated rubber powder in a mass ratio of 1:(0.2~0.3). The activated rubber powder comprises waste tire rubber powder and a composite activator in a mass ratio of 10:(0.8~1.5). The composite activator comprises an organic phase and an inorganic phase in a mass ratio of (1.5~3):1. The organic phase is a chitosan-amino acid derivative, and the inorganic phase is a layered bimetallic hydroxide. Compared with existing technologies, the rubber powder modified asphalt prepared by this invention exhibits good high-temperature storage stability and interfacial structural integrity, demonstrating excellent anti-aging properties and high-temperature rutting resistance during long-term service.

The application belongs to the technical field of modified asphalt materials, and particularly relates to high-viscosity and high-elasticity modified asphalt for ultra-thin surface and a preparation method thereof. The high-viscosity and high-elasticity modified asphalt comprises the following components in parts by weight: 100 parts of base asphalt, 7-15 parts of SBS thermoplastic elastomer, 2-4 parts of tackifier, 4-8 parts of plasticizer, 3-6 parts of polyolefin elastomer grafted glycidyl methacrylate, and 1-2 parts of diaryl disulfide. The polyolefin elastomer grafted glycidyl methacrylate, the specific tackifier and the plasticizer are used to synergistically modify the SBS modified asphalt, so that the anti-segregation performance, low-temperature crack resistance, high-temperature stable anti-rutting capability and anti-aging property of the obtained modified asphalt can be simultaneously improved.

This invention belongs to the field of building materials technology and relates to a radiation-cooled paving brick and its preparation method. The radiation-cooled paving brick comprises, from bottom to top, a base layer, a functional layer, and a surface layer. The functional layer comprises, by weight, the following raw material components: 20-50 parts cement-based binder, 20-50 parts radiation-cooling functional filler, 0-30 parts aggregate, 0.5-2.5 parts admixture, and 0.1-0.5 parts reinforcing fiber. Both the functional layer and the base layer of this invention are cement-based materials, resulting in strong bonding. Through the synergistic effect of the functional filler in the functional layer and the cement hydration products with radiation-cooling function, and with the surface coated with an inorganic nano-high-hardness self-cleaning surface layer, a highly efficient and long-lasting radiation-cooling effect can be achieved.

This invention proposes a novel steel structure seismic-resistant block, fixedly installed at the bottom of a steel box girder and on the inner side of the pier support. It includes a damping plate and a stiffening plate. The damping plate is fixedly mounted on a fixed frame composed of stiffening plates, facing the pier support. The fixed frame is fixedly mounted at the bottom of the steel box girder. The damping plate includes a plate bearing and evenly distributed nails on the plate bearing. Both the plate bearing and the nails are made of neoprene rubber. This invention achieves its damping function by using a neoprene rubber damping plate instead of the original elastic structure. It serves as a primary energy-dissipating structure, with a stiffening plate behind the damping plate acting as a secondary energy-dissipating structure. This multi-layered energy-dissipating structure results in better overall damping performance, effectively absorbing and attenuating vibrations, and reducing the impact of lateral slippage of the superstructure on the pier.

The utility model discloses a kind of six-prong block solid stone slope protection structures, including multiple six-prong blocks, multiple six-prong blocks inside are provided with up and down through grass planting cavity;Multiple six-prong blocks are provided with at least 6 through holes at height direction 1 / 3 along horizontal direction through;Multiple through hole is through with steel wire A and steel wire B reinforcement fixed;Multiple six-prong blocks are laid along box culvert boundary boundary line and cut-off flood drainage channel top boundary line respectively, six-prong block inside located in edge area is filled with concrete by concrete filling cavity, to form boundary reinforcement area.The six-prong block solid stone slope protection structure of the utility model not only improves the structural stability and ecological performance of slope protection, also has the advantages such as convenient construction, cost benefit is high, durability is strong and water permeability is good.

The present application relates to a kind of glass microsphere fillers with coal gasification fine slag as raw material and its preparation method, method includes taking coal gasification fine slag dilution with water into 20-40 wt% coal gasification fine slag slurry, after sufficient stirring to slurry, through 300 mesh sieve, collect sieve under composite slurry, solid-liquid separation is carried out to material, filter cake is dried, then calcined at 700 DEG C and carbon is removed, obtain glass microsphere filler;The filler of the present application can be directly used in the preparation of plastic products without organic modification, play the role of reinforcing agent in the obtained plastic products, improve the strength, hardness, anti-aging, high temperature stability of product.

This invention relates to the field of plastics technology, specifically to a high-oxygen-barrier plastic bottle and its preparation method. The invention involves uniformly mixing polyethylene, ethylene-vinyl alcohol copolymer, nylon oligomer, compatibilizer, and high-performance barrier material to obtain a mixture; the mixture is then melt-extruded and injection-molded to obtain a preform; the preform is then placed in a blow molding die, inflated, and cooled to obtain the finished plastic bottle. This finished plastic bottle possesses excellent barrier properties, antioxidant properties, and antibacterial properties, thus having broad application prospects in the field of plastics technology.

This invention discloses a waterproof and breathable polyurethane material and its preparation method, relating to the field of polyurethane material technology. The waterproof and breathable polyurethane material includes a base layer, a middle layer, and a top layer; the thickness ratio of the base layer, middle layer, and top layer is (5-10):(6-10):(4-8); the base layer is selected from regenerated cellulose fiber and synthetic fiber; the middle layer, by weight, contains the following components: 100 parts of waterborne polyurethane resin, 0.01-0.5 parts of wetting and leveling agent, 1-5 parts of foam stabilizer, and 0.01-0.5 parts of isocyanate curing agent; the top layer, by weight, contains the following components: 100 parts of waterborne polyurethane resin, 0.01-0.2 parts of scratch-resistant agent, 0.01-0.5 parts of wetting and leveling agent, 1-5 parts of foam stabilizer, and 0.01-0.5 parts of isocyanate curing agent. The waterproof and breathable polyurethane material of the present invention has good waterproof and breathable properties, anti-aging properties, a comfortable surface feel, and a high yield rate; moreover, the preparation method is simple and easy to operate, which is convenient for large-scale production.

The application provides a preparation and application of an anti-aging starch-based emulsifier, wherein the preparation method comprises five steps of amorphization, oxygen-free pyrolysis, low-temperature gelatinization, centrifugal separation and spray drying; the amorphization and overheated steam treatment are combined, the pyrolysis efficiency and solubility of starch are improved, and browning and peculiar smell are prevented; the starch granules after pyrolysis are subjected to low-temperature gelatinization and centrifugal separation to obtain a soluble starch solution with suitable molecular weight and chain length distribution, and the starch granules form granular molecular clusters in water, adsorb and stabilize the oil-water interface; due to strong adsorption force, the starch molecular clusters are difficult to be widely crosslinked, and the aging of the starch emulsifier is effectively inhibited; the starch-based emulsifier provided by the application has the characteristics of anti-aging and pure naturalness, and is suitable for food, pharmaceutical and other industries.

The application discloses an overhead line with intelligent monitoring and lightning protection functions and a preparation process thereof, and belongs to the technical field of cables. The overhead line adopts an integrated layered structure of a conductor core-insulation layer-lightning protection layer-protection cover, a monitoring module is embedded between the insulation layer and the lightning protection layer, and a signal transmission unit is matched. The conductor core is a copper alloy stranded wire with added silver and tin elements, and the stranded wire has both electric conductivity and corrosion resistance; the insulation layer is made of cross-linked polyethylene material containing a flame retardant and an anti-aging agent, and weather resistance is improved; the lightning protection layer is a galvanized steel stranded wire spirally wound and filled with silicone insulation sealant, and efficient lightning protection and waterproof are realized; the monitoring module integrates temperature, humidity, tension and lightning stroke detection sensors; the signal transmission unit supports LoRa / Wi-Fi dual-mode communication and GPS / Beidou dual-mode positioning, and can transmit monitoring data and fault positioning information in real time; and the protection cover is provided with anti-skid textures and drainage grooves, and environmental adaptability is enhanced.

The invention provides a polyamide hot melt adhesive, a preparation method thereof and a double-wall heat-shrinkable sleeve, and the polyamide hot melt adhesive comprises the following components in parts by mass: 100 parts of polyamide; 0.01 to 0.1 part of an initiator; 1-10 parts of a reactive monomer; 0.5 to 3 parts of an antioxidant; and 2-10 parts of a tackifier. The polyamide hot melt adhesive realizes efficient and reliable adhesion of silicone rubber, simplifies the production process, improves the production efficiency, and has excellent comprehensive performance.