31results about How to "Easy for large-scale industrial production" patented technology

The invention discloses a method for preparing polyacrylamide, belonging to the technical field of synthesis of water-soluble macromolecular materials. According to the method, polyacrylamide with the molecular weight being over 1 million can be prepared by adopting inorganic nano-silica and ammonium persulfate as a compound initiator, carrying out low-temperature and low-pressure reaction, then drying and crushing. Due to the compound initiator, acrylamide is promoted to be polymerized on the surfaces of nanoparticles; compared with the traditional preparation methods, the method has the advantages that the preparation process is simple, the conditions are easily controlled, the large-scale industrial production is facilitated, and the molecular weight of a product is about 1.7 million.

The invention relates to a preparation method of a polycondensation catalyst, the polycondensation catalyst prepared by the preparation method, and a method used for preparing PBS and PBS copolymer by using the polycondensation catalyst. According to the preparation method, on the one hand, activity of titanium is controlled, and dosage of titanium is reduced by taking advantage of coordination effect of a surfactant compound, and controlling hydrolysis speed of titanium silicon; and on the other hand, catalytic action of the catalyst on side reaction of polycondensation and thermal oxidative degradation is inhibited for a certain degree, and physical and mechanical properties and the color of polyester products are improved by controlling the surfactant compound and active center titanium.

The invention relates to a yeast protein concrete foaming agent and a preparation method thereof. The preparation method comprises the following steps: separating yeast protein from beer, wine and soy sauce fermentation industrial waste, or preparing the yeast protein by steps of inoculation, culture, impurity and odor removal, centrifugal precipitation and the like, adding NaOH or Ca(OH)2 aqueous solution, mixing in a reaction kettle, hydrolyzing at a temperature of between 50 and 100 DEG C for 3 to 6 hours, and filtering to prepare mother solution of a yeast protein foaming agent; and compounding and evenly mixing according to a weight ratio of the mother solution of the yeast protein foaming agent to a stabilizing agent to a dispersing agent to a preservative to water being 50-150:1-6:5-10:0.1-1:10-50 to prepare the concrete foaming agent. The foaming agent has the advantages of low price, good environmental protection, excellent foaming performance, and easily obtained raw materials or easy mass production; and prepared foam concrete has light weight and heat insulation, and meets the requirement of an energy-saving wall on the performance of the foam concrete.

The invention belongs to the technical field of preparing and processing additives, and discloses a walnut green seedcase phenol natural antioxidant and a preparing method and application thereof. The preparing method includes the steps that fresh walnut green seedcase is used as a raw material, selected, washed, dried, broken, extracted through ultrasound and microwave synergic assistance, filtered with a millipore filtering film, purified with macroporous resin, and freeze-dried in vacuum to obtain the walnut green seedcase phenol natural antioxidant. The phenol content in the obtained product is 85.25% or more, and the antioxidant activity retention rate is 95% or more. The prepared phenol antioxidant product is natural and nontoxic, has higher free radical scavenging capacity and antioxidant activity than Vc and BHT and can be widely used in the fields of food, healthcare products, medicine, cosmetics and daily necessities.

The invention relates to a metal titanium surface titanium oxide nano-wire film and a preparation method thereof. The component of the prepared film can be titanate, titanic acid or titanium dioxide, the diameter of each nano-wire is between 10 nm to 100 nm, the nano-wires are interlaced and wound to form a great amount of large holes and mesopore networks, and the pore space is between 20 nm to 500 nm. The preparation method comprises the following main steps: firstly, pickling cleaning is performed to the metal titanium surface; secondly, a mixed oxidizing solution of strong alkali and oxydol is used to oxidize the metal titanium surface and form the titanate nano-wire film; thirdly, acid soaking is adopted to exchange alkaline metal ions to form the titanic acid nano-wire film; and fourthly, the titanium dioxide nano-wire film is formed through high temperature roasting. The invention has the advantages that the preparation method of the metal titanium surface titanium oxide nano-wire film is simple, the cost is low, the method is suitable for large-scale industrial production, and the prepared titanium oxide has broad application prospect in photochemical catalysis related field and the electrochemistry sensing related field.

The invention discloses a pea protein concrete foaming agent and a preparation method thereof. The preparation method is characterized by comprising the steps of: mixing 10 weight parts of pea protein, 0.1 to 1 weight part of papain and 200 weight parts of water, carrying out hydrolysis reaction for 0.5 to 24 hours under the temperature of 10 DEG C to 100 DEG C, deactivating enzyme, and filtering, wherein filtering liquid is a prepared mother solution of the pea protein concrete foaming agent; and uniformly mixing 30 to 200 weight parts of the mother solution of the pea protein concrete foaming agent, 1 to 10 weight parts of stabilizing agent, 1 to 10 weight parts of dispersing agent, 0.1 to 5 weight parts of preservative according to weight proportion to prepare the pea protein concrete foaming agent. The preparation method disclosed by the invention has advantages of readily available raw materials, low production cost, and favorable environmental friendliness, and is easy for realizing large-scale industrial production. A foaming process is simple, and the pea protein concrete foaming agent can efficiently enhance the foaming capacity, foaming stability and concrete consistencyand also efficiently enhance various performances of foaming concrete.

The invention provides a polymer fire-proof and moisture-proof sealing agent and its preparation method and application, and relates to the technical field of fire-proof and moisture-proof sealing materials. The polymer fire-proof and moisture-proof sealing agent includes the following raw materials in parts by mass: vinyl 80-120 parts of silicone oil, 0.3-0.5 parts of the first silane coupling agent, 0.3-1.2 parts of the second silane coupling agent, 2-5 parts of platinum complex and 1-3 parts of hydrogen-containing silicone oil solve the problem of traditional plugging The material is easy to crack, the fireproof and moistureproof effect is poor, the fluidity is weak, the leveling effect is poor, and the technical problems of secondary construction are difficult. The polymer fireproof and moistureproof sealing agent provided by the invention not only has excellent fireproofness, moistureproofness and fluidity And water repellency, it can block the cable gap in all directions without dead ends and achieve excellent fireproof, moistureproof and small animal effects, and it has no corrosion to contact cables and box materials, has certain flexibility, and is easy for secondary construction , the weather resistance will remain unchanged for 20 years, and the blocked parts can be used again. The application market is huge and the prospect is good.

The invention provides a highly oriented cellulose airgel and a preparation method thereof, and relates to the field of polymer functional materials. The preparation method of the highly oriented cellulose aerogel comprises the following steps: (a) adding Chemical cross-linking agent, chemical cross-linking, to obtain chemical cross-linked cellulose hydrogel; (b) pre-stretching and alcohol solution replacement of chemical cross-linked cellulose hydrogel, drying, to obtain highly oriented cellulose airgel The material solves the technical problem that the traditional preparation method cannot prepare highly oriented nanofiber structure and transparent cellulose airgel. The preparation method of the highly oriented cellulose airgel provided by the invention uses an alcohol coagulation bath to freeze the orientation, and at the same time The replacement of hydrogel with alcohol gel greatly reduces the replacement time and alcohol consumption, and improves the preparation efficiency of airgel.

The invention provides a Campanulaceae kimchi and a production process and application thereof, and relates to the technical field of pickles. The Campanulaceae Kimchi comprises the following raw materials in parts by mass: 400-600 parts of Campanulaceae, 10-30 parts of kimchi salt, antioxidant plants 5-20 parts of extract, 5-35 parts of lactic acid bacteria and 800-1200 parts of water, solve the problems of uncontrollable fermentation results, long production cycle, unstable product quality, weak antioxidant activity and nitrite content of traditional natural fermentation of Campanula kimchi High technical problem, the platycodon kimchi provided by the present invention not only has high product quality, strong antioxidant activity, low nitrite content, but also easy to control fermentation process, fermentation time At the same time, the production process of platycodon kimchi is simple, the operation is simple, the large-scale industrial production is easy, and the application prospect is good.

The invention belongs to the technical field of biology, in particular relates to the technical field of biomedicine and in particular relates to a cell culture method for enabling human somatic cells to perform reversion differentiation for producing human blood derived auto-retina stem cells as well as a kit and application. The preparation method comprises the following steps: taking somatic cells as raw cells, sequentially culturing the raw cells through a cell culture solution A1, a cell culture solution A2 and a cell culture solution A3, thereby obtaining the blood derived auto-retina stem cells. The human blood cells serve as the raw cells, and the raw cells are subjected to reversion differentiation so as to produce the human blood derived auto-retina stem cells. A cell culture solution formula composed of small molecular substances is used, and the human blood cells are rapidly subjected to reversion differentiation so as to produce the human blood derived auto-retina stem cells under the conditions that the human somatic chromosome DNA sequence is not changed and any foreign gene or DNA fragment is not inserted. The production speed, yield and purity in the invention are obviously superior to those in the prior art.

The invention discloses a hydrogen storage electrode alloy for a Ni-MH secondary battery and a preparation method thereof. The chemical formula is: RE1-xMgxTiyNizAlmSin; m≤0.15, 0.05≤n≤0.15. In addition to lanthanum, rare earth elements must also contain at least one of samarium, yttrium, neodymium, and praseodymium. The preparation method is to adopt induction heating and smelting under the protection of inert gas, inject the molten alloy directly into a water-cooled copper mold, and cool down to room temperature with the furnace under the protection of inert gas to obtain alloy ingots, which are uniformly annealed in a vacuum heat treatment furnace; in the alloy of the present invention Add titanium and silicon to improve the corrosion resistance of the alloy and improve the electrochemical cycle stability of the alloy. Make full use of rare earth elements, so that the alloy has good comprehensive electrochemical performance. The preparation process of the alloy is easy to master and is suitable for large-scale production.