8results about How to "High softening point" patented technology

The present application relates to a preparation process of isotropic pitch and high softening point coating pitch, which uses aromatic oil as raw material oil, and bio-tar or / and bio-pitch as co-carbonization agent. The pre-polymer material is obtained by pre-polymerization reaction of the bottom into the pre-polymerization reactor under the induction of oxygen-containing linear polymer. The photosensitive oxidation crosslinking agent is added to the pre-polymer material, the material distribution tray in the middle of the oxidation crosslinking reaction tower is fed, and the oxidation crosslinking gas enters from the lower part of the crosslinking reaction tower through the gas distributor. The obtained crosslinking pitch product is discharged from the bottom of the reaction tower. The crosslinking pitch then enters the middle of the polymerization reactor, and the polycondensation reaction occurs under the induction of high-energy electron beam irradiation. The polycondensation pitch product is obtained from the lower part of the polymerization reactor. The polycondensation pitch product enters the upper part of the extraction separation tower, and the sub / supercritical solvent enters the lower part of the extraction separation tower. The two-phase countercurrent contact extraction separation is carried out, and the isotropic pitch and high softening point coating pitch are obtained after the extraction solvent is separated.

The invention discloses an asphalt mixture additive as well as a preparation method and application thereof. The asphalt mixture additive comprises the following components in parts by weight: 100 parts of base asphalt; 1-10 parts of a modifier; 1-10 parts of a performance regulator; the performance regulator is obtained by modifying nano silicon dioxide with an accelerant, and the accelerant is a phosphate ester substance. The asphalt mixture additive disclosed by the invention is used in the asphalt mixture mixing process, and the use performances of high temperature resistance, stripping resistance, rutting resistance and the like of the asphalt mixture can be improved.

This invention relates to a conductive silver paste-specific glass powder for automotive rear window defroster lines, its preparation method, and its application. The glass powder comprises the following components in the indicated mass ratios: Bi₂O₃: 45-65%, SiO₂: 15-30%, B₂O₃: 5-12%, Al₂O₃: 1-5%, K₂O: 2-8%, Li₂O: 1-5%, CaO: 0.5-3%, and Sb₂O₃: 0.5-3%. It is processed according to the following steps: raw material selection, pretreatment, precise mixing, high-temperature melting, rapid water quenching, fine processing, and grading. Compared with existing technologies, this invention has advantages such as adaptability to high-temperature short-time sintering, high acid resistance, low sheet resistance, high welding strength, and high adhesion.

The invention relates to the technical field of refractory thermal insulation materials, in particular to a high-temperature-resistant marine rock wool product and a preparation method thereof. The high-temperature-resistant marine rock wool product specifically comprises the following components in parts by weight: 85-95 parts of a rock wool material, 1-10 parts of an adhesive, 2-4 parts of a silane coupling agent and 3-5 parts of a water repellent. According to the invention, through a high Al2O3 rock wool skeleton, Na2O and K2O are introduced as fluxing components, and the fire resistance, heat preservation, hydrophobicity and mechanical properties of the marine rock wool are synergistically improved by using the multi-element modified phenolic resin, so that the marine rock wool has a good application prospect.

The invention relates to the field of coal chemical industry, and discloses a method for preparing hard asphalt by solvent extraction of coal tar. The method comprises the following steps: mixing a first solvent with coal tar, heating and stirring, standing for a period of time, separating a first extract liquor on the upper layer, adding the first solvent into the raffinate again, heating, stirring, standing and circularly extracting to obtain a first raffinate, wherein the first solvent is selected from methanol or ethanol; and mixing a second solvent with the first raffinate, heating, stirring, standing, and separating an upper-layer second extract, the raffinate being the hard asphalt component, and the second solvent being selected from toluene or xylene. According to the method, high-quality hard asphalt is obtained by extracting coal tar step by step through two solvents, the softening point of the high-quality hard asphalt is high, and the content of toluene insoluble substances and quinoline insoluble substances is relatively high; the selected solvent is low in toxicity, low in boiling point and good in extraction effect, the extraction process is simple, the extraction temperature is low, and the solvent can be recycled; the method has the advantages of low energy consumption, less investment, stable quality of the hard asphalt product and less discharge of three wastes.

The invention provides a steel wire rope lubricating grease composition as well as a preparation method and application thereof, and belongs to the technical field of lubricating grease. The steel wire rope lubricating grease composition comprises the following components in percentage by mass: 30-60% of high-viscosity base oil, 10-35% of low-viscosity base oil, 1-10% of microcrystalline wax, 0.5-10% of a polymer, 1-5% of a softening point improver, 1-10% of a water repellent agent, 1-10% of a metal surface adhesive and 0.1-3% of an antirust agent. The dropping point of the steel wire rope lubricating grease composition reaches 110 DEG C or above, the low-temperature performance reaches-30 DEG C or below, and the steel wire rope lubricating grease composition has the advantages of excellent adhesion, corrosion resistance, heat and humidity resistance, long-term usability and the like, is suitable for protection and lubrication of steel wire ropes in environments with large temperature difference, high salt mist, high heat and humidity and strong corrosion, and has a very good industrial application prospect.

The application relates to the technical field of waterproof coiled materials, and discloses a high-molecular pre-paved waterproof coiled material for tunnels, which comprises, from top to bottom, a magic tape hook surface layer, a magic tape hair surface layer, a high-molecular sheet layer, a glue-adhesive waterproof layer and an anti-adhesive layer; the glue-adhesive waterproof layer is hot-melt pressure-sensitive glue; the hot-melt pressure-sensitive glue comprises the following components by weight: 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene block copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer; the addition amount of the naphthenic oil is less than that of the polyisobutylene. The above technical scheme solves the problem of insufficient peeling strength of the glue-adhesive waterproof layer of the high-molecular pre-paved waterproof coiled material for tunnels in the related art due to the addition of the naphthenic oil.

This invention discloses a super-viscous, high-permeability reducing thin-layer tack coat oil, its preparation method, and its application, relating to the field of road engineering technology. The tack coat oil is made from the following raw materials in parts by weight: 60 parts of oil slurry asphalt composition, 5-8 parts of modifier, 30-35 parts of regenerator, 2-5 parts of surfactant, and 0.6-1.2 parts of compatibilizer. The tack coat oil of this invention not only has high initial and forming strength and permeability, but also improves construction efficiency, eliminating the need for pre-spraying and waiting for emulsion breaking. It also has a regeneration and restoration effect on old pavements, activating the activity of oxidized asphalt and repairing bonding failures. Furthermore, this tack coat oil has strong adaptability to the construction environment, making it less likely for subsequent paving machinery tires to lift it, and eliminating the need for a dedicated paver.