52results about How to "Resistant to organic solvents" patented technology

Compositions and methods for a melt processable semicrystalline poly(aryl ether ketone) incorporating phthalazinone and 4,4′-biphenol as comonomer units are described herein. The polymers are resistant to and insoluble in common organic solvents and liquids as well as in aggressive organic solvents such as chloroform and chlorinated liquids. The polymers are melt processable via techniques such as extrusion, injection molding, and compression molding. The semicrystalline poly(aryl ether ketone) containing phthalazinone comonomer units have properties which make them suitable for manufacturing high temperature resistant molded systems and other articles.

The invention discloses a super-hydrophobic surface of a metal copper micron array and a preparation method thereof. The method comprises the steps of firstly, building a coarse structure of micro-size copper on a metal substrate by chemical deposition; then carrying out hydrophobic treatment on the surface of a self-assembled low-surface energy matter to cover a layer of hydrophobic film on the coarse structure, so as to obtain the super-hydrophobic metal copper surface. The metal copper surface prepared by the method disclosed by the invention has an excellent super-hydrophobic property; the contact angle with water drops can achieve 156 degrees; the rolling angle is smaller than 1 degree; meanwhile, the copper hydrophobic surface has a good surface structure stability, has excellent performances such as acid resistance, alkali resistance, organic solvent resistance, low temperature resistance, and high temperature resistance, and can meet the requirements of the industrial field on the metal copper super-hydrophobic surface. The technique has the advantages that any template is not needed; complicated equipment is not needed; and the super-hydrophobic surface has no special requirements on the shape of a substrate and is suitable for industrial mass production.

The invention discloses a copper-silver micro-nano multi-stage structure super-hydrophobic surface formed on a metal base surface. The copper-silver micro-nano multi-stage structure super-hydrophobic surface comprises a copper-sliver micro-nano multi-stage structure and a hydrophobic film. The hydrophobic film is self-fitted on the surface of the copper-sliver micro-nano multi-stage structure. The copper-sliver micro-nano multi-stage structure comprises a plurality of copper-sliver micro-nano cones which longitudinally grow perpendicular to a metal base and which are tightly arranged. The hydrophobic film is self-composed of low surface energy material. Compared with common self-assemblies, the copper-silver micro-nano multi-stage structure super-hydrophobic surface has the advantages that sulfydryl of hydrophobe long-chain mercaptan and outermost silver ions of the copper-sliver micro-nano multi-stage structure form a coordinate bond having a large stable constant, and accordingly, the copper-silver micro-nano multi-stage structure super-hydrophobic surface is well stable, resistant to acid, alkali, organic solutions, high temperature and low temperature.

The present invention relates to a polyacrylonitrile-based hollow carbon fibre membrane and its production method. The composition of said membrane formula is (wt%) 70-80% of polyacrylonitrile, 5-15% of methyl methacrylate and 5-15% of polyvinylpyrrolidone, and its production method includes the membrane-casting liquor preparation process, spinning process, stretching process, after-treatment process, preoxidation process and carbonizing process, and it is characterized by that the temp. of proxidation process is 240-300 deg.C, temp.-rising speed is 2-8 deg.C / min, heat-insulating time is 0.5-2 hr, then continuously temp.-rising to make carbonizing process, carbonizing temp. is 750-1000 deg.C, temp.-rising speed is 8-15 deg.c / min, heat-insulating time is 1-3 hr.

The invention belongs to the field of collagen peptide, and discloses bovine bone collagen peptide and a production method thereof. The production method of the bovine bone collagen peptide comprisesthe steps of impurity removal, smashing and cooking on bovine bone, oil-water separation for cooking liquid, high-efficiency compounding of enzymic preparations, enzymolysis on the condition that thepH value is not adjusted and the temperature condition is not controlled, filtering of an inorganic nanofiltration ceramic membrane to remove components which are easily dissolved and components whicheasily absorb moisture, high-temperature and high-pressure treatment, concentration and drying for powder preparation. According to the method, the enzymolysis pH value does not need to be adjusted,the enzymolysis temperature does not need to be controlled, the enzymolysis time is short, the enzyme addition amount is small, and the enzymatic products are low in molecular weight and are centralized; meanwhile, the prepared bovine bone collagen peptide powder is excellent in water re-dissolubility, and does not easily absorb moisture or get caked in the storage process.

Compositions and methods for a melt processable semicrystalline poly(aryl ether ketone) incorporating phthalazinone and 4,4′-biphenol as comonomer units are described herein. The polymers are resistant to and insoluble in common organic solvents and liquids as well as in aggressive organic solvents such as chloroform and chlorinated liquids. The polymers are melt processable via techniques such as extrusion, injection molding, and compression molding. The semicrystalline poly(aryl ether ketone) containing phthalazinone comonomer units have properties which make them suitable for manufacturing high temperature resistant molded systems and other articles.

The invention relates to a method for preparing immobilized enzymes and immobilized strains, belonging to the field of biotechnology. The method for preparing immobilized enzymes and immobilized strains comprises the steps of preparing an enzyme solution and a strain solution, adsorbing enzymes and strains by using a ceramic membrane, inoculating the ceramic membrane on which enzymes and strains are adsorbed to a polyethyleneimine crosslinking agent solution to soak, and filtering and drying the obtained product so as to obtain immobilized enzymes and immobilized strains. The method disclosed by the invention is high in activity of prepared enzymes and strains, simple in extraction process, low in production cost and less in equipment investment, and easily expands the scale of production.

A thermosetting resin composition capable of providing a molding, such as a resin sheet, that excels in not only dielectric characteristics but also dimensional stability at high temperature and even after exposure to high temperature thermal history, exhibits little dimensional change by the thermal history, namely, exhibiting low linear expansion coefficient. There are further provided a resin sheet and resin sheet for insulated substrate produced from the thermosetting resin composition. In particular, there is provided a thermosetting resin composition comprising an epoxy resin of 100 to 2000 epoxy equivalent, an epoxy resin hardening agent consisting of a phenolated compound, and a layered silicate, and are further provided a resin sheet comprised of the thermosetting resin composition and a resin sheet for insulated substrate comprised of the resin sheet.

The invention discloses a preparation method of cationic waterborne polyurethane resin with high solid content. The preparation method comprises the following steps: adding polyester dihydric alcohol, micromolecular dihydric alcohol, polyhydric alcohols and bis-hydroxyl polyethylene oxide ether into a reactor to heat, and dehydrating in vacuum; introducing nitrogen gas to protect, and dropwise adding diisocyanate at 60-80 DEG C; cooling to 45-55 DEG C, and dropwise adding hydrophilic monomer after adding a catalyst; keeping the reaction temperature to 45-50 DEG C and stopping heating until the content of isocyanate is detected to reach a theoretical end point; regulating the viscosity by using acetone, neutralizing by using acetic acid at 40 degrees until the pH value is 6-7; adding deionized water and a chain extender to stir and disperse at a high speed, and removing acetone under reduced pressure to obtain the cationic waterborne polyurethane resin. While being used as a leather finishing agent, the cationic waterborne polyurethane resin shows relatively firm adhesion with leather due to positive charges; while woodware is coated with the cationic waterborne polyurethane resin, tannic acid is fixed by virtue of electric charge effects to prevent the tannic acid from migrating, so that a wood plate is flat and smooth, and has gloss and good sealing effects.

The invention relates to a lightweight ceramic material, which is prepared from magnesium soil and pore former through the steps of proportioning, ball grinding, squeezing, forming, drying and sintering. The material has the advantages of light weight, quench resistance, high intensity, strong corrosion stability, non-deformation, good heat-insulating property, and sound insulation performance.

The invention belongs to the field of mechanical conveying of corrosive liquid chemicals, and particularly relates to an anti-corrosion nested type gear and a gear pump filling machine. The anti-corrosion nested type gear comprises an inner tooth ring and an outer tooth ring, wherein the outer tooth ring is nested at the outer part of the inner tooth ring; an axial hole is formed in the center of the inner tooth ring; multiple first tooth threads are arranged on the outer circumferential surface of the outer tooth ring; the outer tooth ring is made of anti-corrosion plastic. The anti-corrosion nested type gear disclosed by the invention has the beneficial effects that not only can a gear be simply and efficiently disassembled, assembled and replaced, but also a working environment for conveying the corrosive liquid chemicals by the gear pump filling machine can be well adapted, and meanwhile, the service life of the gear is prolonged.

The invention discloses a preparation method of chebulagic acid, particularly a method for extracting chebulagic acid by ultrasonic-extraction-assisted bioenzyme enzymolysis. The method comprises the following steps: raw material treatment, enzymolysis, ultrasonic extraction, purification, vacuum concentration and freeze-drying to obtain the chebulagic acid. The method has the advantages of simple technique, mild reaction conditions, high selectivity, high chebulagic acid purity and the like.

The invention provides a high-corrosion-resistance composite coating for the surface of a metal workpiece and a preparation method. The high-corrosion-resistance composite coating for the surface of the metal workpiece and the preparation method are characterized in that the composite coating comprises an aluminum triphosphate corrosion-resistant layer and an epoxy resin coating material layer, and the preparation method of the composite coating comprises the following steps that a first step, an aluminum triphosphate coating material is smeared on the surface of the workpiece, and surface drying is conducted; a second step, an epoxy resin coating material is smeared on the surface of the workpiece, and high temperature curing is conducted; and a third step, infrared laser is adopted to scan the surface of the workpiece. The aluminum triphosphate coating material is suspension liquid formed by dispersing a superfine aluminum triphosphate powder, a nano-scale silica dioxide powder, a superfine calcium oxide powder and zinc stearate, and the components of the epoxy resin coating material comprise bisphenol A epoxy resin, cyanuric acid triglycidyl epoxy resin, m-phenylenediamine, polyether polyamine, xylene and high boiling-point gasoline. An infrared laser scanning technology is that the power is 1-3 kW, the scanning speed is 8-12 mm / s, and the power density is 1-5 kJ / cm<2>.

A membrane separation device with a cleaning function comprises a membrane separation unit, a water inlet pipeline and a water outlet pipeline connected with the membrane separation unit and a water suction pump communicated with the water outlet pipeline. The membrane separation unit comprises a first chamber communicated with the water inlet pipeline and a second chamber communicated with the water outlet pipeline, and a plurality of globular hairbrushes are arranged in the membrane separation unit. According to the membrane separation device with the cleaning function, the plurality of the globular hairbrushes are arranged between adjacent porous membranes in the second chamber, cleaning liquid is added into the second chamber to be reacted with the outer walls of the porous membranes by controlling a jet flow pipeline, and gas is transmitted into the second chamber by controlling a gas transmission pipeline, the plurality of the globular hairbrushes collide mutually to slightly brush over the outer walls of the porous membranes under the action of the gas; accordingly, the porous membranes are cleaned and prevented from plugging; a pressure detecting meter used for detecting pressure of the outer walls of the porous membranes is arranged in the second chamber, the cleaning process is performed when the pressure achieves a certain value.

The invention belongs to the field of collagen peptide, and discloses deep-sea fish collagen peptide and a production method thereof. The production method includes successively performing soaking treatment on deep-sea fish skin particles by adopting a NaOH solution and a HCl solution; adding water and utilizing a colloid mill to prepare into a crude collagen solution; performing heating processing, and performing enzymatic hydrolysis by using a high efficiency compound enzyme preparation under a natural condition of adjusting pH values and controlling temperatures; filtering and removing components which are not easy to dissolve and easy to absorb moisture through an inorganic nanofiltration ceramic membrane; and performing high temperature and high pressure treatment, concentration and drying to prepare powder. The method is short in enzymatic hydrolysis time, less in enzyme addition, and low and concentrated in molecular weight of enzymatic hydrolysate without adjusting the pH valueof enzymatic hydrolysis and controlling enzymatic hydrolysis temperatures; and the prepared deep-sea fish collagen peptide powder is excellent in water re-solubility, and is not easy to absorb moisture and cake during storage.

The invention belongs to the technical field of coatings and particularly relates to a colorful LED-UV glass coating and a preparation method thereof. The coating is prepared from modified aliphatic acrylate, modified epoxy acrylate, modified polyester acrylate, a glass surface adhesion promoter, a compound photoinitiator, nano zirconia, a boiling resistant aid, a defoaming agent, a leveling agent, graphene, pigment and a diluent. The glass surface adhesion promoter capable of improving glass surface adhesion as well as resin, the initiator and various aids capable of improving boiling resistance of cured films are added to the colorful LED-UV glass coating, these substances are crosslinked through reactions and are instantly cured to form a film under irradiation of an LED-UV lamp, the adhesion to the glass surface is enhanced, the performance of the glass coating is greatly improved, and the formed film has the characteristics of high gloss, high hardness, high adhesion, freezing resistance, boiling resistance, organic solvent resistance, acid-base resistance and salt mist resistance. The preparation method is simple and feasible.

The invention discloses a deep eutectic solvent, an environment-friendly adhesive and a preparation method thereof. The deep eutectic solvent is formed by mixing a hydrogen bond donor and a hydrogen bond acceptor, and the hydrogen bond donor is citric acid, One of malic acid and tartaric acid, the hydrogen bond acceptor is cyclodextrin; the cyclodextrin is one of α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin; the Malic acid is L-(-)-malic acid; said tartaric acid is L-(+)-tartaric acid. The preparation method of the environment-friendly adhesive is prepared by using any of the above-mentioned deep eutectic solvents as raw materials. The deep eutectic solvent provided by the present invention can be used to prepare environment-friendly adhesives, and the prepared environment-friendly adhesives are environmentally friendly, strong in viscosity, simple in preparation method, readily available in raw materials, strong in applicability, and resistant to organic solvents etc., so it has great potential as an adhesive.

The invention discloses a water treatment device and a water treatment system. The water treatment device comprises a plurality of sets of water treatment rooms which are sequentially arranged from left to right, an electrode plate is arranged on each of the inner sides of the left side wall and the right side wall of each water treatment room; two filter membranes are arranged between the two electrode plates in each water treatment room; a partition is arranged between the two filter membranes in each water treatment room, as well as between the adjacent filter membranes and electrode plates; the adjacent electrode plates and filter membranes in each water treatment room and the partitions between the electrode plates and the filter membranes form a concentrated water room; the two filter membranes in each water treatment room and the partition between the two filter membranes form a fresh water room. The water treatment system comprises a primary water treatment device, a water desalination system and a water concentration system. The water treatment device and the water treatment system have the advantages of being resistant to high temperature, acid and alkali and organic solvents, are low in price and greatly reduce the water treatment cost.

The invention belongs to the field of micronano-electronic material, and relates to a method for preparing a two-layer flexible copper-clad lamination. The preparation method obtains the two-layer flexible copper-clad lamination through modifying surface of a flexible polyester substrate and self-assembling a chemical copper plating, and comprises the following steps: hydroxylating and sulfhydrylating surface of the flexible polyester substrate, and self assembling the chemical copper plating to obtain the flexible copper-clad lamination. A copper film and the substrate are connected through a chemical bond, and are generated in situ, so the prepared copper-clad lamination has the advantages of lightness and thinness, high tractility, high bonding strength, high conductivity, high flatness, acid resistance, alkali resistance, organic solvent resistance and the like, and can be widely applied to flexible circuit boards and flexible electronic devices, such as a flexible field effect transistor, a flexible solar cell, a flexible light emitting diode and the like.

The invention discloses a warp beam dyeing system and a warp beam dyeing method. The warp beam dyeing system comprises a dyeing vat, a pump, a creel, a plurality of beams and water drain barrels, wherein the water drain barrels are sealed, the creel is arranged in the dyeing vat, the plurality of beams are connected onto the creel, the beams are hollow shafts, chambers of the beams are formed inside the hollow shafts, a plurality of through holes for a dyeing liquid to pass are formed in side walls of the beams, and the water drain barrels are arranged in the chambers of the beams. By the aid of the warp beam dyeing system, water consumption, steam consumption and chemical material consumption can be reduced.

The invention discloses a preparation method of cationic waterborne polyurethane resin with high solid content. The preparation method comprises the following steps: adding polyester dihydric alcohol, micromolecular dihydric alcohol, polyhydric alcohols and bis-hydroxyl polyethylene oxide ether into a reactor to heat, and dehydrating in vacuum; introducing nitrogen gas to protect, and dropwise adding diisocyanate at 60-80 DEG C; cooling to 45-55 DEG C, and dropwise adding hydrophilic monomer after adding a catalyst; keeping the reaction temperature to 45-50 DEG C and stopping heating until the content of isocyanate is detected to reach a theoretical end point; regulating the viscosity by using acetone, neutralizing by using acetic acid at 40 degrees until the pH value is 6-7; adding deionized water and a chain extender to stir and disperse at a high speed, and removing acetone under reduced pressure to obtain the cationic waterborne polyurethane resin. While being used as a leather finishing agent, the cationic waterborne polyurethane resin shows relatively firm adhesion with leather due to positive charges; while woodware is coated with the cationic waterborne polyurethane resin, tannic acid is fixed by virtue of electric charge effects to prevent the tannic acid from migrating, so that a wood plate is flat and smooth, and has gloss and good sealing effects.

The invention discloses a non-calcium ion dependent alpha- amylase AmySL3 with extreme halophilic and surfactant resistance and a coding gene amySL3 of a genome encoding the alpha- amylase, a recombinant vector and a recombinant strain including the gene. The optimum pH of the alpha-amylase AmySL3 is 7.5. The optimum reaction temperature is 45 DEG C. The enzyme is extremely salt-tolerant, has thehighest activity and is very stable in the presence of 5.0 M NaCl. The enzyme belongs to the non-calcium ion dependent alpha-amylase. High concentration of calcium ion has inhibitory effect on the enzyme. Besides, the enzyme has good tolerance to common surfactants and organic solvents. The alpha- amylase of the non-calcium ion dependent alpha- amylase with the extreme halophilic and surfactant resistance is characterized by being extremely halophilic, resistant to the surfactants and the organic solvents, and non-calcium ion dependent, which can be widely used in the industrial fields of pickled food, seafood, detergent and drug synthesis.

Thermostabilization of a protein where the protein contains access routes and wherein at least one amino acid in the bottleneck of the access route is mutated, includes identifying the amino acids of the bottleneck and the amino acids control exchange of the solvent between a buried protein core and surrounding environment and / or in the packing of the amino acids inside the access route. Modification of the amino acids are determined so that the packing of the amino acids inside the tunnel is improved and the access route prevents access of undesired solvent molecules to the protein core, while allowing passage of the compounds necessary at the protein core to enable the protein to perform its biological function.

The invention discloses and provides an AGV (automated guide vehicle) visual navigation color zone characterized by wear resistance, oil stain resistance, strong ground adhesion, withstanding of repeated vehicle rolling and wide applicability, and a manufacturing method thereof. According to the invention, the AGV visual navigation color zone comprises a release agent layer (1), a substrate layer(2) and an adhesive layer (3) that are disposed from top to bottom in order. The AGV visual navigation color zone provided by the invention is applicable to the AGV navigation material field.

The invention discloses an oral liquid used for zinc supplementation, and a preparation method thereof, and belongs to the technical field of traditional Chinese medicine health product. The oral liquid used for zinc supplementation comprises ingredients, which can be taken as both health care products and drugs, such as pseudostellaria root, prepared rehmannia root, Radix Polygoni Multiflori Preparata, and bighead atractylodes rhizome, and ingredients, which can be taken as both food and drugs, such as licorice, Poria cocos, and dried orange peel. Pseudostellaria root is taken as the sovereign drug, Radix Polygoni Multiflori Preparata is taken as the ministerial drugs, bighead atractylodes rhizome, Poria cocos, dried orange peel, and prepared rehmannia root are taken as the conductant drugs; licorice is adopted for harmonizing the above drugs. The preparation method comprises four steps including smashing, decocting, single syrup preparation, and oral liquid preparation. The preparation method is capable of extracting the effective components fully, avoiding destroy of the effective components caused by long term decoction. The oral liquid is composed of the traditional Chinese medicine components which can be taken as both health care products and drugs, or food and drugs, no antiseptic is added, traditional Chinese medicine concepts and syndrome differentiation and treatmentare taken as the principles; the oral liquid is capable of nourishing both spleen and kidney, nourishing both Qi and blood, strengthening the spleen in transportation, improving digestion functions,adjusting internal organs functions, realizing natural zinc supplementation without supplying zinc, and adjusting the integral internal organs functions.

The formula of light ceramic material used in chemically filling material, catalyst carrier, filtering equipment, heat-insulating equipment, sound-insulating equipment and radiation equipment includes magnesium clay, piaozhu, pearlite powder, pore-forming agent and adhesive, and its preparation process includes the steps of mixing, materials ball-grinding, press-drying, forming stove-drying and sintering to obtain the invented product which can be substituted for ceramic, wood, metal and plastic products.

Novel siloxane copolymers have a structure as shown below. They can be applied and heat treated at relatively low temperatures into cured resin coatings which have satisfactory solvent resistance, durability, and good adhesion and bond to metal substrates such as copper even under humid conditions.