38results about How to "Rapid and complete biodegradation" patented technology

The invention provides a composite of vegetable insulating oil and modified nano powder and application and preparation method thereof. The composite comprises vegetable insulating oil and nano powder, and the composite is used for preparing insulating oil. The preparation method includes the following steps: surface treatment is carried out on the nano powder; vegetable insulating oil subject towater removal and gas removal is mixed with the nano powder subject to surface treatment; the mixed insulating oil is subject to ultrasonic oscillation; and mixture obtained by oscillation treatment is added into a planet ball mill, and wet grinding is carried out. In the invention, nano powder is added into vegetable insulating oil, nano liquid dielectric medium can be formed, not only the dielectrical property of insulating oil can be improved, but also heat dissipation function of transformer winding coil can be improved; and the nano powder is far smaller than foreign particle in the insulating oil and can form stable sol system with the liquid dielectric medium, and a breakdown bridge can not be formed under the action of external electric field, thus improving the dielectrical strength of insulating oil.

The invention provides environment-friendly insulating oil which takes vegetable oil as the raw material, and has high flash point and anti-oxidation stability, consists essentially of triglyceride and antioxidant, and also contains a metal deactivator in the further technical proposal. The environment-friendly insulating oil is prepared by refinement by taking vegetable oil as the raw material, does not contain toxic substances, dose not cause damage to environment and human body, and can be rapidly and thoroughly biodegraded, is environment-friendly insulating liquid, and can be applied in places with requirement of high fireproof performance as the flash point and the fire point thereof are both higher than 300 DEG C; the risk of fire and explosion is far lower than that of the traditional transformer oil; and all other performance indexes fully conform to the national standard GB 2536-90 of mineral transformer oil.

The invention provides a glass cleaner for automobiles and a preparation method thereof. The raw materials of the glass cleaner include solvents, anionic surfactants, nonionic surfactants, spices, additives, preservatives, corrosion inhibitors, dyes , a pH adjuster and water. Existing car glass cleaners use a large amount of flammable liquids as solvents, which have a low flash point and are easy to volatilize. Such glass cleaners can easily cause fires during production, storage, transportation and use. or an explosion accident. In order to solve this problem, the present invention uses high-flash point, low-residue raw materials for compounding. On the premise that the flash point of the product is higher than 61°C and the freezing point is lower than ‑8°C, it can effectively clean the glass without corrosion and low residue. Leaves no trace.

The invention discloses a solid-liquid phase change heavy oil dirt cleaning agent packaged by a porous medium and a preparation method thereof. The weight ratio of a solid phase of the cleaning agent to a liquid phase of the cleaning agent is 1:5; the solid phase is a first-level expanded perlite with the particle size of 60-80 mesh and the expansion times of more than 20 times; the liquid phase comprises 1-10 % by mass of an anionic surfactant, 1-10% by mass of an non-ionic surfactant, 1-3% by mass of triethanolamine, 1-3% by mass of trisodium citrate, a little amount of an auxiliary agent, and the balance being water. The anionic surfactant is a mixture of two or three of sodium alpha-olefin sulfonate, sodium dodecyl benzene sulfonate and fatty methyl ester sulfonate. The non-ionic surfactant is fatty alcohol-polyoxyethylene ether, cocamidopropyl betaine or a mixture thereof. The cleaning agent has both solid cleaning agent characteristics and liquid cleaning agent characteristics, is non-toxic, and has good biodegradability; and the preparation method has the advantages of simple operation and low cost, and has broad market prospects.

The invention discloses a water-base oil dirt cleaning agent and a preparation method thereof, wherein the water-base oil dirt cleaning agent has the characteristics of being strong in cleaning capability, excellent in biodegradation, low in preparation cost, environmentally-friendly, efficient and the like, and is specifically suitable for cleaning heavy oil dirt on the road pavement. The water-base oil dirt cleaning agent consists of the following components in weight proportion: 2-7% of anionic surfactant, 2-8% of nonionic surfactant, 1.5-3% of triethanolamine, 1-3% of trisodium citrate and the balance of water, wherein the anionic surfactant is preferably selected from two or three of alpha-vinyl sodium sulfonate (AOS), sodium dodecyl benzene sulfonate (LAS) and sulfonate of fatty acid methyl ester ethoxylate (FMES); and the nonionic surfactant is preferably selected from one or two of fatty alcohol-polyoxyethylene ether (AEO-9) and cocamidopropyl betaine (CAB).

The invention provides a preparation method of insulating oil taking vegetable oil as raw material, which comprises the following steps of: 1) neutralizing the vegetable oil with alkali; 2) conducting reduced pressure distillation on the vegetable oil after being neutralized with alkali; 3) hydrogenating the vegetable oil after the reduced pressure distillation; 4) conducting deep refinement to the hydrogenated vegetable oil: adding citric acid which accounts for 0.3 to 1.0 percent of the weight of the vegetable oil to the hydrogenated vegetable oil, conducting reduced pressure distillation for 1 to 2 hours at the pressure of 20 to 50 mmHg and the temperature of 80 to 90 DEG C; and then adding bentonite which accounts for 0.1 to 0.3 percent of the weight of the vegetable oil, conducting reduced pressure distillation for 1 to 2 hours at the pressure of 20 to 50 mmHg and the temperature of 80 to 90 DEG C; 5) conducting reduced pressure distillation again to the vegetable oil after the deep refinement; and 6) adding an additive to the vegetable oil being treated with the reduced pressure distillation again.