31results about How to "Strong resistance to organic solvents" patented technology

The invention relates to an abrasion resistant cast tube with a high temperature oxidation resistant anticorrosive coating. An abrasion resistant cast tube body is produced through centrifugal casting and is subjected to quenching, high-temperature tempering, solution strengthening thermal treatment and twice tempering dispersion hardening thermal treatment, then a rustproof coating is coated on the outer wall of the tube through electrostatic spraying, finally a water glass nanometer composite coating prepared through testing is sprayed on the inner wall of the tube, and a high temperature oxidation resistant anticorrosive coating film inner layer is obtained after high temperature curing and cooling. The obtained metal tube has high hardness and abrasion resistance, and the anticorrosive coating of the metal tube has excellent waterproof performance, antifouling effect and high temperature resistance.

The invention relates to a preparation method of a wear-resistant cast pipe with a high-temperature oxidation resistant corrosion-resistant layer. The preparation method is characterized by manufacturing a wear-resistant pipeline body through centrifugal casting, carrying out the processes of quenching, high-temperature tempering, solid solution strengthening thermal treatment and double tempering and dispersion hardening thermal treatment, then electrostatically spraying a rust-resistant coating on the outer wall of the pipeline, finally coating a water glass nano-composite coating prepared through tests on the inner wall of the pipeline, and carrying out cooling after high-temperature curing, thus obtaining a high-temperature oxidation resistant corrosion-resistant film-coated inner layer. The prepared metal pipeline has higher hardness and wear resistance, and the corrosion-resistant coating of the metal pipeline has excellent water resistance, antifouling effect and high temperature resistance.

The invention relates to an anti-corrosion, high-temperature-resisting and wear-resisting cast pipe. A wear-resisting pipeline body is manufactured by means of centrifugal casting; after the steps of quenching, high-temperature tempering, solid solution strengthening heat treatment and two times of tempering dispersion hardening heat treatment, the inner wall of the pipeline body is coated with a water glass nanometer composite coating configured by a test; and then, the coating is cooled after being cured at a high temperature, so that a high-temperature-oxidation resisting anti-corrosion coating inner layer is obtained. The manufactured metal pipeline has high hardness and high wear-resisting performance. The anti-corrosion coating has excellent water-resisting performance, an excellent antifouling effect and good high-temperature-resisting performance.

The invention discloses a technique for preparing antimicrobial peptide by using Bacillus subtilis, belonging to the technical field of bioengineering. By using Bacillus subtilis BRT39 capable of generating broad-spectrum high-efficiency antimicrobial peptide as a production strain, liquid seed preparation, fermentation liquid preparation, fermentation liquid pretreatment, antimicrobial peptide extraction and refinement, antimicrobial peptide dry powder preparation and other techniques are carried out to prepare the high-purity antimicrobial peptide finished product, wherein the activity recovery rate is up to higher than 43.5%. The invention has the advantages of simple technique, high yield of antimicrobial peptide, and high purity; the prepared antimicrobial peptide dry powder belongs to a natural antimicrobial agent and has no toxic or side effect, and thus, can be used as a food preservative, feed additive, agricultural biological control agent or animal disease preventing agent; and the antimicrobial peptide has the advantages of no toxicity, no residue, no drug resistance and high safety.

The invention provides a high-temperature resistant, anti-sticking and anticorrosive thermoplastic coating for inner walls of metal pipelines and a preparation method thereof, belonging to the technical field of coatings. The coating comprises thermoplastic polyether sulfone resins, high-temperature resistant fluororesins, thixotropic agents, anticorrosion pigments, functional fillers, a complex solvent and auxiliaries in a mass ratio of (10-20):(6-15):(0-2):(2-15):(0-30):(40-78):(0-2). The preparation method is characterized by mixing the thermoplastic polyether sulfone resins, high-temperature resistant fluororesins, thixotropic agents, functional fillers, anticorrosion pigments, complex solvents and auxiliaries and then stirring the mixture at a linear velocity of 15m / s for 15-30 minutes and then sanding the mixture for 2-6 hours. The coating provided by the invention has the characteristics that the coating has good adhesion with metal substrates, has usage temperature up to 260 DEG C, has low surface energy, is oleophobic and lyophobic, prevents contamination and scaling and has strong acid, alkali and corrosion resistance capacities and thin coat. The preparation method is simple, the production process is easy to control and the production equipment is easy to achieve.

The invention discloses an automotive interior decorative plate prepared by utilizing a waste polypropylene material. The preparation method comprises the steps: cleaning and crushing a waste polypropylene material and then adding an adjuvant such as resin and rare earth oxide, fully mixing, heating and compression molding to obtain a composite plate for automotive interior decoration. The prepared plate has the advantages of strong anti-acid resistance capacity, strong organic solvent resistance capacity, high temperature resistance, and uneasiness in oxidation and aging.

The invention relates to an anti-corrosion, high-temperature-resisting and wear-resisting cast pipe. A wear-resisting pipeline body is manufactured by means of centrifugal casting; after the steps of quenching, high-temperature tempering, solid solution strengthening heat treatment and two times of tempering dispersion hardening heat treatment, the inner wall of the pipeline body is coated with a water glass nanometer composite coating configured by a test; and then, the coating is cooled after being cured at a high temperature, so that a high-temperature-oxidation resisting anti-corrosion coating inner layer is obtained. The manufactured metal pipeline has high hardness and high wear-resisting performance. The anti-corrosion coating has excellent water-resisting performance, an excellent antifouling effect and good high-temperature-resisting performance.

The invention discloses a lipase gel granule and a preparation method thereof; the lipase gel granule provided by the invention consists of a nucleus and a nucleocapsid; wherein, the nucleus is lipase, the nucleocapsid is polymer material which is formed by the polymerization of vinyl monomers, and the nucleus and the nucleocapsid are connected by chemical bonds. The lipase gel granule of the invention has high activity, strong heat stability, strong organic solvent resistance, small granular size, high specific surface area and no mass transfer and diffusion resistance, etc.; as a nano-enzyme preparation with high performance, the lipase gel granule has wide application prospect in the field of nanoscience and biotechnology; the preparation method of the lipase gel granule of the invention is characterized in that the reaction condition is simple and moderate and the prepared gel granule can be controlled and is easy to be implemented industrially and expanded.

The invention relates to a silicon surface treatment solution and particularly relates to an organic silicon surface treatment solution. The organic silicon surface treatment solution is prepared from the following raw materials in parts by weight: 45-60 parts of diphenyldimethoxysilane, 10-15 parts of vinyl, 1-5 parts of methyl ethyl ketone, 5-8 parts of ethoxyethanol, 0.5-0.8 part of ferric oxide, 0.5-1 part of a catalyst and 5-15 parts of dimethylpropane. The organic silicon surface treatment solution provided by the invention can be cured at room temperature, is short in curing time, has a good bonding force, can be used for bonding various materials, and is strong in organic solvent resistance and good in sealing property.

The invention relates to a preparation method of an anti-corrosion high-temperature-resistant wear-resistant casting pipe. The preparation method comprises the following steps of: preparing a wear-resistant pipeline body by centrifugal casting, treating the wear-resistant pipeline by processes of quenching, high-temperature tempering, solid-solution strengthening heat treatment and twice quenching-dispersing-hardening heat treatment, then coating an anti-rusting coating layer on the outer wall of the pipeline by electrostatic spraying, finally coating water-glass nano composite coat prepared by test on the inner wall of the pipeline, cooling after high-temperature curing, and obtaining a high-temperature-oxidation-resistant anti-corrosion film-plated inner layer. The prepared metal pipeline is high in hardness and wear resistance, and the anti-corrosion coating layer is excellent in water resistance, antifouling effect and high-temperature resistance.

The invention relates to an anti-corrosive and wear-resistant pipeline for delivering minerals. A wear-resistant pipeline body is fabricated by centrifugal casting; quenching, high temperature tempering, solid solution strengthening heat treatment and a double tempering dispersion hardening heat treatment technology are performed; an outer wall of the pipeline is coated with a water glass nano composite coating subjected to test configuration; high temperature solidifying and then cooling are performed; a high-temperature-resistant, oxidized and anti-corrosive filming inner layer is obtained; and finally an inner wall of the pipeline is coated with a wear-resistant coating. The fabricated metal pipeline has higher hardness and wear-resistant property; the anti-corrosive outer coating of the pipeline has excellent water resistance, anti-fouling effect and high-temperature-resistant property; and the anti-corrosive inner coating of the pipeline has excellent wear-resistant property.

The invention relates to a fabrication method of an anti-corrosive and wear-resistant pipeline for delivering minerals. The method comprises the steps that a wear-resistant pipeline body is fabricated by centrifugal casting; quenching, high temperature tempering, solid solution strengthening heat treatment and a double tempering dispersion hardening heat treatment technology are performed; an outer wall of the pipeline is coated with a water glass nano composite coating subjected to test configuration; high temperature solidifying and then cooling are performed; a high-temperature-resistant, oxidized and anti-corrosive filming inner layer is obtained; and finally an inner wall of the pipeline is coated with a wear-resistant coating. The fabricated metal pipeline has higher hardness and wear-resistant property; the anti-corrosive outer coating of the pipeline has excellent water resistance, anti-fouling effect and high-temperature-resistant property; and the anti-corrosive inner coating of the pipeline has excellent wear-resistant property.

The invention relates to a Nocardia globerula R-9, which was preserved in the "General Microorganism Center of China Microbiological Culture Collection Management Committee" on July 29, 2002, and its preservation number is CGMCC NO.0781. The strain's liquid culture, immobilized cells, resting cells in non-growth period and crude enzyme extract can remove heterocyclic sulfur in sulfur-containing organic compounds through oxidative cleavage of C-S bonds. The strain specifically removes heterocyclic sulfur in fuel without destroying the C-C skeleton of organic compounds, without reducing the combustion calorific value of fuel, and has broad industrial application potential.

The invention discloses a hollow plate full-ceramic filter membrane element. The hollow plate full-ceramic filter membrane element comprises a plate ceramic membrane ceramic plug formed by coating a ceramic membrane solution on a hollow plate ceramic membrane supporting body and an inorganic adhesive between a membrane and the ceramic plug, wherein the hollow plate full-ceramic filter membrane element is prepared and combined according to the following methods and steps: firstly, manufacturing the hollow plate ceramic membrane supporting body according to the following substeps, then preparing the membrane solution and manufacturing the plate ceramic membrane and the ceramic plug, adhering the ceramic plug and the plate ceramic membrane by using the inorganic adhesive to be manufactured into an integrated component, carrying out high-temperature firing on the integrated component, thus manufacturing the hollow plate full-ceramic filter membrane element. The hollow plate full-ceramic filter membrane element gives play to the advantages of good stability and high strength of ceramic materials, strong high-temperature resistance, corrosion resistance and organic solvent resistance and convenience in high-pressure backwashing of the plate ceramic membrane and the like, and can be well used for treating special water quality of various organic solvents, high temperature and strong acid and alkali, so that the application range of the plate ceramic membrane can be greatly widened.

The invention discloses a preparation method of a bionic super-hydrophobic composite organic pigment. The preparation method comprises the following steps: activating meerschaum by an acid, using meerschaum to adsorb an organic pigment, and using organic silane to modify meerschaum. According to the preparation method, ethyl n-silicate is used to form a rough outer surface on the surface of an organic composite pigment taking modified meerschaum as the carrier; the thickness of the rough surface can be controlled by controlling the concentration of ethyl n-silicate; at the same time, a silanization agent is added to modified the composite pigment so as to form alkyl groups on the outer surface of the composite pigment, the surface energy of the composite pigment is reduced, and the meerschaum composite organic pigment has a super-hydrophobic property therefore. The synthesis equipment is simple, no pollution is generated, and the investment is little. The obtained super-hydrophobic composite organic pigment has a bright color and luster, also has a super-hydrophobic and self-cleaning function, does not dissolve in liquid acid or alkali, and has a strong performance on resisting organic solvents, heat, and UV aging.

The invention provides a surface coating for a building decoration material. The surface coating is prepared from the following raw materials in parts by weight: 10-30 parts of microlite stone, 20-60 parts of octamethylcyclotetrasiloxane, 5-15 parts of paraffin, 10-35 parts of ethyl chlorosilane, 15-28 parts of methyl ethyl ketone, 0.5-5 parts of titanium dioxide, 0.5-5 parts of catalyst, 5-12 parts of adhesive, 2-8 parts of stearic acid and 15-30 parts of dimethyl propane. The surface coating for the building decoration material can be solidified at a room temperature, is short in solidifying time, has good bonding power, can bond various materials, and has strong organic solvent resistance and good sealability.

The invention discloses a frozen gel embedding method for an enzyme. The frozen gel embedding method comprises the steps of: (1) dissolving enzyme powder in a buffer solution to prepare an enzymic solution with the concentration of 0.2-5g / L; (2) uniformly mixing the enzymic solution with a polymerized monomer water solution, a crosslinking agent and an initiator, placing a mixture in a container,and standing for 1-5h at the temperature of minus 15-minus 40 DEG C to obtain a frozen solid; and (3) irritating the frozen solid in ultraviolet light for 2-6min to obtain gel, soaking obtained gel with distilled water, changing the distilled water for a plurality of times, and carrying out vacuum drying to obtain the frozen gel embedded enzyme. According to the method disclosed by the invention,the frozen gel embedded enzyme achieves the advantages of high catalytic activity, strong stability, small mass transfer resistance, strong organic solvent resistance and the like which cannot be obtained by using other methods; in addition, the method is simple in process and mild in conditions, and the obtained immobilized enzyme is high in recovery rate and wide in applicable environmental range.

The invention relates to an abrasion resistant cast tube with a high temperature oxidation resistant anticorrosive coating. An abrasion resistant cast tube body is produced through centrifugal casting and is subjected to quenching, high-temperature tempering, solution strengthening thermal treatment and twice tempering dispersion hardening thermal treatment, then a rustproof coating is coated on the outer wall of the tube through electrostatic spraying, finally a water glass nanometer composite coating prepared through testing is sprayed on the inner wall of the tube, and a high temperature oxidation resistant anticorrosive coating film inner layer is obtained after high temperature curing and cooling. The obtained metal tube has high hardness and abrasion resistance, and the anticorrosive coating of the metal tube has excellent waterproof performance, antifouling effect and high temperature resistance.