13results about How to "High biodegradation rate" patented technology

The invention relates to a biodegradable hydraulic oil composition and a preparation method of hydraulic oil, and relates to the technical field of hydraulic oil compositions.The hydraulic oil composition comprises, by weight, 20-37% of ester oil, 5-10% of refined vegetable oil and 5-10% of a demulsifier, and the total weight of the ester oil, the refined vegetable oil and the demulsifier is 100%. The content of the refined vegetable oil is 62-79.9 wt%, the content of the demulsifier is 0.1-1 wt%, and the preparation method of the refined vegetable oil comprises the following steps: pre-loading a nanocapsule with an antioxidant as an inner core in activated clay, loading the activated clay pre-loaded with the nanocapsule into deacidified oil, and filtering to obtain the refined vegetable oil. The hydraulic oil composition disclosed by the invention has excellent biodegradability and also has the technical effects of relatively good oxidation stability and viscosity-temperature property.

This invention relates to the field of nitrile butadiene rubber (NBR) technology, and discloses a biodegradable NBR, its preparation method, and its application in gloves. The biodegradable NBR of this invention comprises 60-80 parts by weight of NBR, 3-6 parts by weight of filler, 1.2-1.8 parts by weight of vulcanizing agent, 20-40 parts by weight of polylactic acid (PLA), and 5-12 parts by weight of cyanopolyester. The cyanopolyester of this invention improves the compatibility between PLA and NBR, resulting in a thermoplastic PLA-NBR composite material with higher tensile strength and tear strength, exhibiting excellent mechanical properties. The cyanopolyester's main chain contains a large number of biodegradable ester groups, and the addition of biodegradable PLA further enhances the biodegradability of the NBR material, making it more environmentally friendly and suitable for practical applications in biodegradable gloves.

The invention relates to the field of composite soft plastic packaging, in particular to a dynamic self-repairing type high-toughness bio-based degradable film and a preparation method and application thereof. The film is composed of a lactic acid high polymer, a copolymer of butylene adipate and butylene terephthalate, a compatibilizer, a nucleating agent, a catalyst, an auxiliary agent and an antibacterial agent, the catalyst is formed by mixing a main catalyst and a co-catalyst, the main catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide, and the co-catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide. The cocatalyst is selected from any one of triethylamine, triphenylphosphine and aluminum acetylacetonate. The invention provides an effective scheme for solving the core contradiction that the strength, toughness, repairability and controllable degradability of a bio-based material are difficult to consider at the same time, is expected to replace traditional plastics in the fields of high-end environment-friendly packaging, intelligent agricultural mulching films and the like, and has great environmental benefits and industrialization prospects.

The present invention relates to the technical field of lubrication of extremely low temperature equipment, and specifically to an extremely low temperature energy-saving and environment-friendly hydraulic circulating oil and a preparation method thereof. The hydraulic circulating oil comprises, by weight, 5-20 parts of alkyl naphthalene; 64-80 parts of a functional fluid containing a low-viscosity, low-volatility poly-alpha olefin base material; 10-15 parts of a hydrocarbon polymer fluid containing an ester functional group; 0.8-1.5 parts of a composite additive; 0.03-0.1 parts of a demulsifier; and 0.01-0.05 parts of a defoamer. The hydraulic circulating oil greatly improves the flash point of the oil while ensuring low-temperature starting performance and low-temperature fluidity, effectively reduces the evaporation loss of the oil, effectively balances the low-temperature and high-temperature performances of the oil, expands the application field and lubrication reliability of the extremely low-temperature oil, can meet the lubrication requirements in an extremely low-temperature working environment, and has a good energy-saving effect.

The invention relates to the technical field of polyester resin, and discloses a preparation process of tin-free environment-friendly polyester resin, which is characterized in that dihydric alcohol, dibasic acid, a catalyst, an antioxidant, an acidolysis agent, a curing accelerator and the like are reacted to obtain the tin-free environment-friendly polyester resin. According to the invention, bismuth iso-octoate and 4-dimethylaminopyridine form a compound catalyst to replace a traditional organic tin catalyst, so that the tin-free environment-friendly polyester resin is obtained, and the blank of the tin-free environment-friendly polyester resin is filled. The toxic and side effects are effectively reduced, the environmental pollution is reduced, and the requirements of environment-friendly polyester resin are met. Meanwhile, tris (2-hydroxyethyl) benzene-1, 3, 5-triformate is added to participate in esterification polycondensation reaction, contains a plurality of hydroxyl crosslinking polymerization sites and a heat-resistant benzene ring structure, and is crosslinked into polyester resin molecules, so that the glass-transition temperature, the heat stability and the biodegradability of the resin can be improved.

The invention discloses lubricating grease for a gate hoist bearing and a preparation method of the lubricating grease. The lubricating grease comprises the following raw materials in percentage by mass: 60-85% of degradable vegetable oil, 8-15% of a thickening agent, 5-8% of a waterproof agent, 2-4% of an antioxidant and antiwear agent and 1-3% of an antirust agent. The prepared lubricating grease for the gate hoist bearing has high biodegradation rate, excellent waterproof performance and good antioxidant and antiwear performance, and can better meet the use requirements of the gate hoist bearing for the lubricating grease.

The application discloses a kind of high antioxidation composite ester insulating oil and synthesis method thereof, it is related to synthetic ester insulating oil technical field.The synthesis method includes the following steps: with neopentyl glycol and gallic acid as reactant under the action of catalyst, first esterification reaction is carried out, and intermediate is obtained;With the intermediate, n-octanoic acid and n-decanoic acid as reactant under the action of catalyst, vacuum esterification reaction is carried out, and the high antioxidation composite ester insulating oil is obtained.The product prepared by specific step-by-step reaction process and raw material selection in the application, while realizing very low viscosity (40 ℃ kinematic viscosity is as low as 8.16 mm 2 s ‑1 )Simultaneously, very high initial oxidation temperature (as high as 272.8 ℃) and very low dielectric loss (as low as 0.0026) are obtained, and the "low viscosity-high antioxidation-low dielectric loss" is realized.

The application provides a kind of biobased degradable industrial degreasing cleaning agent and its preparation method, it is related to the field of industrial degreasing cleaning agent, it includes biobased wetting penetration component, biological emulsification curling core component, natural plant solubilization component, non-phosphorus biological chelation component, natural corrosion inhibition dispersion buffer component, environmental protection bacteriostatic low-foam auxiliary agent, deionized water carrier, core function raw material is taken from plant fermentation, natural oil, microbial fermentation product, abandon petroleum-based non-degradable auxiliary agent, realize the biodegradation of all components, build wetting+permeation+solubilization+emulsification+curling+dispersion six-element synergistic degreasing system, overcome the industry pain point that traditional water-based cleaning agent is difficult to clean thick lithium / calcium / urea-based grease, heavy oil stain 10s rapid stripping effect.

The invention discloses an ecological flocculant based on cassava starch as well as a preparation method and application thereof, and belongs to the technical field of dredged soil treatment. The preparation method comprises the following steps: dispersing cassava starch in water, stirring until the cassava starch is completely dissolved, adding a sodium hydroxide solution under the conditions of water bath heating and stirring, and carrying out alkalization reaction to obtain a first mixed solution; dropwise adding a 3-chloro-2-hydroxypropyl trimethyl ammonium chloride solution into the first mixed solution, and continuously performing an etherification reaction under the conditions of water bath heating and stirring to obtain a second mixed solution; after the reaction is finished, standing and cooling the second mixed solution to room temperature, and adjusting the pH to be neutral to obtain a flocculant mother solution; precipitating the flocculant mother liquor, washing, filtering, drying to constant weight, and grinding into powder to obtain the cassava starch-based ecological flocculant. The cassava starch-based ecological flocculant used in the invention is rich in cationic groups, has good solubility, is easy to fully disperse in dredged soil slurry, and has excellent dredged soil flocculation capability.

The application discloses a paper-based high-barrier material with a water-based PHA coating and a PHA extrusion layer, and a preparation method and application thereof, and belongs to the technical field of biodegradable polymer materials and environment-friendly packaging. The scheme innovatively introduces a two-component system with a specific melting point difference to construct a water-based pre-coating layer, and utilizes a double mechanism of "micro-leveling + interface thermal fusion" to realize efficient closing and strong anchoring of a rough base material at a very low coating amount. Compared with a traditional thick-layer shower film process, the material realizes more excellent barrier integrity and oil resistance and moisture resistance performance with a thinner extrusion surface layer, significantly improves moisture resistance and oxygen resistance performance, and simultaneously solves the requirement of puncture resistance of dry and hard food packaging materials through a unique stress balance design of the double-layer system. The material does not contain fluorine-based additives, is completely biodegradable, and meets the high-standard requirement of food safety compliance.

The invention relates to the technical field of baby bottle detergents, and discloses a baby bottle fruit and vegetable detergent containing plant refined components, which comprises the following components: a phase A I, a phase B, a phase A II, a phase E, a phase C I, a phase A III, a phase A IV, a phase A V, a phase C II, a phase A VI, a phase C III, a phase C IV and a phase D. The preparation method of the infant feeding bottle fruit and vegetable cleaning agent containing the plant refined components comprises the following steps: preparing the infant feeding bottle fruit and vegetable cleaning agent. Compared with the prior art, the detergent has the advantages that the detergent has high adsorption selectivity and antibacterial effect, pesticide residues and bacteria on fruits and vegetables of the feeding bottle can be effectively removed, no adverse effect is caused to human bodies after long-term use, meanwhile, no pollution is caused to the environment, stains can be easily removed by using a small amount, and the detergent is saved. In addition, the fruit and vegetable cleaning agent for the baby feeding bottle is simple in preparation process, low in cost, high in biodegradation rate, green, environment-friendly and pollution-free.

The invention discloses a two-component degradable pressure-sensitive adhesive and a degradable pressure-sensitive adhesive tape. The two-component degradable pressure-sensitive adhesive comprises a component A and a component B. The component A comprises, by mass, 80-98 parts of a hydroxyl-terminated polyester copolymer, 2-15 parts of a micromolecule chain extender, 0.1-0.5 part of a catalyst and 1-5 parts of an auxiliary agent. The component B comprises a polyurethane prepolymer containing isocyanato; wherein the hydroxyl-terminated polyester copolymer is a copolymer of carboxyl-terminated poly (butylene succinate) and amorphous poly (propylene carbonate) glycol, and the number-average molecular weight of the hydroxyl-terminated polyester copolymer is 10000-20000; the polyurethane prepolymer containing isocyanato is a reactant of an alcoholysis product of polyhydroxyalkanoate and diisocyanate, and the number-average molecular weight of the polyurethane prepolymer containing isocyanato is 3000-10000; and the micromolecular chain extender is one or more of C2-C6 dihydric alcohols. The degradable two-component pressure-sensitive adhesive disclosed by the invention not only has a relatively high biological decomposition rate, but also realizes good holding power and peel strength, and meanwhile, has no adhesive residue; and meanwhile, the material also has good aging performance retention rate and excellent comprehensive performance.

The present invention relates to the technical field of non-ferrous metal casting, and in particular to an environmentally friendly demoulding agent for aluminum ingot casting and a preparation method thereof. The demoulding agent comprises 45-75 parts of trimethylolpropane stearate, 15-45 parts of synthetic saturated hydrocarbon polymers, 1.5-5 parts of antioxidants, 0.05-5 parts of anti-wear agents, and 0.02-0.2 parts of non-ferrous metal corrosion inhibitors, in parts by weight. The weight ratio of the trimethylolpropane stearate to the synthetic saturated hydrocarbon polymer is (1-5): 1. The demoulding agent of the present invention has excellent wetting, spreading, and permeability, excellent anti-wear performance, high ignition point, low oil smoke, low coking tendency, and excellent hydrolysis resistance, and can greatly reduce the influence of cooling water on demoulding quality, and can also effectively control the pollution of cooling water, and the demoulding agent also has a high biodegradability, can ensure the surface quality of the ingot, improve casting efficiency, and reduce pollution.