38results about How to "Strong resistance to hydrolysis" patented technology

The invention provides a preparation method of a plant straw plate. The preparation method takes full components of dried corn straws, rice straws, wheat straws, sunflower straws, rapeseed straws and cotton straws as raw materials and utilizes a special adhesive of polyether polyol and a prepolymer of isocyanate, so that the water-resisting capability is strong, and the inner bonding intensity of a product is improved; the related indexes of the produced plant straw plate are equal to or better than quality standards of national standards (GB/T4897-92) of a wood artificial plate. The indexes including the inner bonding intensity, the static bending strength, the formaldehyde releasing amount, the water absorption thickness expansion rate and the like. The production process is simplified and the production cost is reduced.

The invention discloses a micromolecule synthesized anti-microbial peptide, as well as a preparation method and application thereof. The sequence of a cationic anti-microbial peptide is SQ1: R-W-W-R-F-NH2 (Arg-Arg-Trp-Trp-Arg-NH2), and the preparation method is the solid-phase chemosynthesis method. The micromolecule synthesized anti-microbial peptide has broad-spectrum cytotoxicity to gram-positive bacteria and gram-negative bacteria, has stronger bactericidal activity than a natural anti-microbial peptide, is simple in structure, convenient for artificial synthesis without any modification and connection, has the advantages of small hemolytic toxicity and no poison effects on animal and plant cells, and has an important value in development and application of antimicrobial agents.

The invention discloses a nano-composite polymer and a temperature-resistant and salt-resistant profile control agent containing the nano-composite polymer, the nano-composite polymer is mainly formedby inorganic nano sol and a temperature-resistant and salt-resistant polymerization monomer through polymerization, and the components of the temperature-resistant and salt-resistant profile controlagent comprise the nano-composite polymer. According to the profile control agent disclosed by the invention, a functional polymer formed by polymerizing a temperature-resistant and salt-resistant polymerization monomer and inorganic nano sol is introduced; the profile control agent has high stability, temperature resistance and salt resistance, the anti-aging time reaches 100 days or above underthe conditions that the temperature is 150 DEG C or above and the salt concentration is 300,000 mg/L, and the strength of the profile control agent is improved through inorganic matter nano sol.

The invention discloses a well drilling waste brick making method. The well drilling waste brick making method comprises the following steps that dirt elimination and desiccation treatment is conducted on well drilling waste to be treated with a dirt elimination and desiccation agent; a construction binding material and a construction aggregate are added to the well drilling waste, to be treated, obtained after dirt elimination and desiccation treatment, even mixing is conducted, and then a brick making mixture is obtained; the brick making mixture is solidified and pressed to be green bricks with the density not smaller than 80% by means of a static pressure type brick making machine; strength maintenance is conducted on the green bricks; the green bricks obtained after strength maintenance is completed are sprinkled or coated with waterborne waterproof coating or dipped in the waterborne waterproof coating, so that an environment-friendly blocking layer with the thickness being 1-10 mm is formed on the surfaces of the green bricks obtained after strength maintenance is completed, and then the finished bricks are made. By the adoption of the well drilling waste brick making method, the well drilling waste can be processed into the brick making raw material which is loose and dry and meets relative environment-friendly standard at a low cost, the brick making raw material can be finally made into the finished bricks which are ideal in compressive strength, ageing resistance, hydrolysis resistance, freezing-thawing resistance, corrosion resistance and environmental protection stability, and therefore harmless and resourceful treatment of the well drilling waste is achieved.

The invention relates to a temperature-resistant and salt-resistant copolymer and a preparation method thereof, and mainly solves a problem that polyacrylamide has high possibility of hydrolysis under the conditions of high temperature and high mineralization degree in a conventional technology for improving the recovery efficiency by tertiary oil recovery. According to the technical scheme, the temperature-resistant and salt-resistant copolymer NWKY-PAN has a general formula shown in the specification, wherein p is the number of -CH2- , and is 1 to 3; x, y and m are the structural unit mole numbers of acrylamide, hydrolyzed acrylamide and lactam monomers respectively, x is 95 to 15, y is 4 to 40, and m is 1 to 45; the molecular weight of the copolymer NWKY-PAN is 12,000,000 to 18,000,000; the problem in the prior art is better solved; the temperature-resistant and salt-resistant copolymer can be used for the industrial production of an oil displacement agent for oil recovery in an oilfield.

The invention relates to amido boron phosphate, which comprises the following ingredients: organic amine, dibutyl phosphite, formaldehyde and bononizing agents according to a ratio being 1:(2-3):(2-3):1. A preparation method of the amido boron phosphate comprises the following steps that a, the dibutyl phosphite and the formaldehyde are added into a reaction kettle, then, the organic amine is completely dripped into the reaction kettle under a stirring condition, the temperature in the reaction kettle is controlled to be smaller than or equal to 30 DEG C, and the stirring is continuously carried out for 1 to 2 hours when the temperature in the kettle is not raised; b, the bononizing agents are added into the reaction kettle, a water distribution device is started, temperature is raised to 110 to 130 DEG C through heating, the backflow reaction is carried out for 3 to 5 hours, the reaction is completed when the liquid surface of water in the water distribution device is not increased, cooling is carried out to the room temperature, and a target product is obtained. The synthetized amido boron phosphate belongs to a B-N-P type multifunctional Y lubricating oil additive, when the amido boron phosphate is added into water-base metal processing liquid, the anti-corrosion performance and the anti-rust performance of the processing liquid can be improved, and the lubricating performance of the water-base metal processing liquid can also be improved.

The invention discloses a flexible series-parallel imbricated photovoltaic module and a manufacturing method thereof, and belongs to the technical field of photovoltaic power generation. The photovoltaic module comprises a front plate, a front adhesive film, an imbricated battery piece group, a rear adhesive film and a back plate, wherein the imbricated battery piece group is packaged between thefront plate and the back plate, the front adhesive film is arranged between the front plate and the imbricated battery piece group, the back adhesive film is arranged between the imbricated battery piece group and the back plate, the front surface and the back surface of each battery piece in the imbricated battery piece group are respectively provided with an electrode, and the front plate and the back plate are flexible plates. The front plate and the rear plate are made of flexible materials, and the conductive adhesive is a silicon-based conductive silver adhesive; after being packaged, the conductive adhesive has excellent elasticity after being cured; the series-parallel imbricated photovoltaic module has the advantages that the partial stress of the series-parallel battery pieces isreduced, the problem of subfissure of the battery pieces can be well solved, the foundation settlement resistance is high, the combination with a building is good, the high-power advantage of the series-parallel imbricated photovoltaic module can be exerted in various occasions, and the application range of the series-parallel imbricated photovoltaic module is expanded.

To prepare a polyester polyol in which a lactone is ring-opening addition polymerized with the compound represented by formula (I).

(wherein each of A¹ and A² represents an alkylene group having not less than 2 carbon atoms, A³ represents an alkylene group, X represents a cationic component, and each of n and m represents an integer of not less than 1.)

The polyester polyol has a high hydrophilic group and high solubility in a solvent (particularly, a low-boiling organic solvent used in the production of a polyurethane) and can design an aqueous polyurethane desirably and produce the aqueous polyurethane.

The invention relates to a method for preparing a milt-functional metal surface treatment additive containing boride diethanolamine phosphates, which comprises steps: diethanolamine and phosphate esterification agents are added into a reaction kettle to react, are hydrolysed and concentrated to obtain a viscous liquid, a water-carrying agent is added into the viscous liquid, a boriding agent is added to react by stirring, and the water-carrying agent is boiled up by decompressing to obtain a target product. The milt-functional metal surface treatment additive which is prepared through the method comprises 30-60% boride diethanolamine phosphates and 20-60% diethanolamine double phosphate esters. The method for preparing the milt-functional metal surface treatment additive containing the boride diethanolamine phosphates has the beneficial effects that the milt-functional metal surface treatment additive containing the boride diethanolamine phosphates has excellent antifriction, antioxidant, rust-proof and lubrication performance and the like because phosphates which are used as main components in the milt-functional metal surface treatment additive containing the boride diethanolamine phosphates contain active elements such as N, P and B and the like, is strong in anti-hydrolytic property, can improve lubricity and anti-rust property of a water-base metal working fluid by being added into the water-base metal working fluid, also can improve extreme pressure property and prolongs service life of the water-base metal working fluid simultaneously, and is an excellent multi-functional water-soluble additive.

The invention belongs to the technical field of polymer materials, and particularly relates to a weatherproof glass fiber reinforced PA66 high-speed rail sleeve material and a preparation method thereof. The material comprises, by weight, the following components: 44.0-58.3% of PA66 resin, 5.0-10.0% of PA6T resin, 0.3-0.5% of antioxidant 1000, 0.3-0.5% of antioxidant 1098, 0.3-0.5% of lubricant, 5.0-10.0% of inorganic filler, 0.5-1% of toughening agent and 0.3-0.5% of weatherproof agent, 30-33% of glass fiber. The material has the advantages of low cost, high strength, strong toughness, fatigue resistance, stable size, good aging resistance, good weatherproof performance and the like, and can meet the high standard requirement of a high-speed rail sleeve.

The invention discloses a long-acting antibacterial material, a dental diaphragm and a long-acting invisible appliance. The long-acting antibacterial material comprises PETG (polyethylene terephthalate glycol) resin and modified tourmaline, wherein the mass ratio of the PETG resin to the modified tourmaline is (10-50):1. The preparation method of the modified tourmaline comprises the following steps: S1, treating nano tourmaline with concentrated sulfuric acid to obtain porous nano tourmaline; S2, treating the porous nano tourmaline with glycerin to obtain hydroxylated porous nano tourmaline; and S3, grafting the hydroxylated porous nano tourmaline with limonin to obtain the modified tourmaline. According to the antibacterial material and the preparation method thereof, the PETG resin and the modified tourmaline are combined to prepare the antibacterial material which is safe and non-toxic, has a strong antibacterial effect and can resist bacteria for a long time, and the antibacterial material is also applied to dental diaphragms and invisible orthodontic appliances.

The invention relates to the technical field of coatings, in particular to a water-resistant acrylate emulsion adhesive and a preparation method thereof. The preparation method of the water-resistant acrylate emulsion adhesive comprises the following steps: mixing polystyrene methyl methacrylate, methyl acrylate, hydroxyethyl acrylate, hydroxyethyl methylacrylate, hexyl acrylate, 2-ethylhexyl acrylate and methyl methacrylate, stirring and dissolving for 60-80 minutes at the temperature of 45-50 DEG C; adding a defoaming agent, a thickening agent and a surfactant for continuous reaction, wherein the reaction temperature is 50-55 DEG C, and the reaction time is 25-35 minutes; and adding an emulsifying agent and deionized water for emulsifying at the emulsifying temperature of 55-60 DEG C for 25-35 minutes, and stopping heating to obtain the water-resistant acrylate emulsion adhesive. According to the preparation method, the reaction temperature and the reaction time in the preparation process can be effectively reduced, so that the energy consumption is effectively reduced, the production efficiency is improved, and the problems of high energy consumption and low production efficiency in the preparation process of the existing adhesive are solved.

Belonging to the technical field of macromolecular materials, the invention in particular relates to a weatherproof glass fiber reinforced PA66 common railway track gauge block material and a preparation method thereof. The weatherproof glass fiber reinforced PA66 common railway track gauge block material provided by the invention includes the following components by weight percentage: 39.0-52.8%of PA66 resin, 5.0-10.0% of PA6T resin, 0.6-1.0% of an antioxidant, 0.3-0.5% of a lubricant, 5.0-10.0% of inorganic filler, 1.0-2.0% of a toughening agent, 0.3-0.5% of a weathering agent, and 35-37% of glass fiber. The weatherproof glass fiber reinforced PA66 common railway track gauge block material provided by the invention has the characteristics of low cost and excellent comprehensive performance, and meets the high standard requirements of track gauge blocks. The weatherproof glass fiber reinforced PA66 common railway track gauge block material provided by the invention has low water absorption, good water resistance and excellent dimensional stability, and improves the product lifetime.

The invention discloses a preparation method of a flame-retardant composite over-rust antirust paint, belonging to the technical field of antirust paint preparation. The preparation method comprises the following steps: drying and pulverizing tung seeds and Maofeng, mixing with lime water to regulate the pH value, standing, filtering, airing the filter residue, adding distilled water, grinding into slurry, heating to keep the temperature under ultrasonic actions, mixing with n-hexane, filtering to obtain the filtrate while keeping the temperature, stirring and mixing with hectorite, talcum powder and the like, adding zinc oxide, keeping the temperature, respectively adding polyurethane, iron oxide and barium sulfate, stirring and mixing, and keeping the pressure, thereby obtaining the flame-retardant composite over-rust antirust paint. The method has the advantage of simple preparation steps. The obtained product has the advantages of favorable adhesive force, favorable uniformity and compactness, favorable flowability, high shock strength (greater than 50kg.cm) and high hydrolysis resistance. After being immersed in water for 140-145 hours, the paint film does not shed or discolor, and does not generate the bubble phenomenon; the water resistance, alkali resistance, rust resistance and flame retardancy are effectively enhanced; and the paint film can resist the high temperature of 130 DEG C for 6080-7100 hours.

The invention discloses a production method of cube sugar. The method is characterized by comprising the following steps: with sucrose as a raw material, transforming the sucrose into isomaltulose under catalysis of sucrose isomerase, and assisting with sucralose; firstly, adding 0.1%-2.0% of sucralose to the isomaltulose, and fully mixing evenly; adding a little of purified water to form wet sugar with the moisture content of 1.5%-2.5%; drying until the moisture content is less than 0.5%, so as to prepare the cube sugar. The production method of the cube sugar disclosed by the invention does not cause increase of blood glucose and insulin, has low GI value and II value, has high tolerance, is free of any peculiar smell, and pure and natural in sweetness, has a good peculiar smell shielding effect, is very stable in structure, high in hydrolysis resistance and relatively high in chemical inertness, has non-hygroscopicity and a special brain strengthening function, and is an excellent bifidobacterium multiplication factor.

The invention discloses a polymer cement coating containing inorganic powder in a liquid material. The coating is prepared from a liquid material component A and a powder material component B. The liquid material component A contains polymer emulsion, inorganic powder with chemical activity on the surface, silane or siloxane, and can contain or do not contain other inorganic filler. The powder material component B contains cement and other components. The mass ratio of the polymer solid to the inorganic material in the coating obtained by uniformly mixing and stirring the liquid material component A and the powder material component B according to a certain proportion is 1:1-1:5.

The invention discloses an anti-corrosion glass fiber bush and a preparation method thereof, and relates to the technical field of glass fiber bushes. The anti-corrosion glass fiber bush comprises thefollowing components in parts by weight: 30-50 parts of polyhexamethylene terephthalamide resin, 40-50 parts of quartz sand, 20-40 parts of fly ash, 25-35 parts of barium sulfate powder, 10-20 partsof antioxidant, 8-10 parts of flexibilizer, 15-20 parts of weather-proof agent, 10-30 parts of glass fiber, 10-15 parts of glycerol tri(1,2- epoxy) propyl ether, 8-10 parts of defoaming agent and 30-40 parts of glass fiber bush. According to the glass fiber bush beneficial to corrosion prevention and the preparation method of the glass fiber bush, glass fibers with a certain particle size are added into a prepared grouting material, so that the prepared grouting material has excellent impact resistance; and by adding a polyhexamethylene terephthalamide resin, quartz sand, fly ash and barium sulfate powder, the prepared grouting material has good processability and mechanical strength, strong hydrolysis resistance and excellent comprehensive performance, so that when the grouting material is used on a glass fiber bush, the corrosion resistance and the stability of the grouting material are remarkably improved.

The embodiment of the invention discloses a preparation method of bis(2,4-dicumylphenyl)pentaerythritol diphosphite. Add phosphorus trichloride dropwise to pentaerythritol, amine hydrochloride catalyst, and aromatic hydrocarbon solvent at a reaction temperature of 5-10°C and slightly reduced pressure, then raise the temperature to 85-90°C in stages, and react under reduced pressure for 1 hour After stopping the decompression, fill with nitrogen protection to obtain the dichloropentaerythritol diphosphite reaction solution; add the above reaction solution dropwise to the aromatic hydrocarbon solvent of 2,4-dicumylphenol heated to 90-100°C, and depressurize Reflux reaction for 4 hours, feed nitrogen, add mixed amine to adjust the reaction system to be alkaline, cool down to room temperature, and filter to obtain bis(2,4-dicumylphenyl)pentaerythritol diphosphite. The invention finally obtains a high-performance product with high yield, narrow melting range, low acid value and excellent hydrolysis resistance through strict control of reaction conditions, such as temperature, pressure, time, catalyst, feeding sequence and post-treatment.