39results about How to "Slow water absorption" patented technology

The invention discloses a method for preparing micro-capsulized superfine red phosphorus, boiling the superfine red phosphorus with vitriol, sodium cyanide solution and sodium hydroxide solution, separately, filtering, eliminating impurities, and drying, and storing by sealing; blending and dissolve metal compound, depositing with ammonia, centrifuging and adding water to dilute, raising temperature, dropping in aluminum nitrate, vitriol or HCl and making metal hydroxide sol; mixing propylene acylamide monomers and N, Ní»-methylene dipropylene acylamide with ammonium persulphate, raising temperature and reacting to form high molecular network gel; adding the high molecular network gel into the metal hydroxide sol, raising the temperature and reacting to form high molecular network gel of metal hydroxide, mixing the high molecular network gel of metal hydroxide with the processed superfine red phosphorus, blending and placing still so that the sol takes the red phosphorus as the center to make surface absorption to form gel and coating a layer of colloid membrane on the red phosphorus surface, so as to obtain the micro-capsulized superfine red phosphorus. The advantages of the invention: it improves the stability, invariability and surface activity of the red phosphorus, improving processing property.

The invention provides a preparation method of a concrete internal curing agent. The preparation method comprises the following steps: mixing acrylamide, a hydrophobic monomer, ethanol, a crosslinking agent and an initiating agent uniformly, heating until the temperature is 50-70 DEG C, then carrying out reaction for 4-10 hours, and carrying out conventional after treatment on a generated gel to obtain a shell material with a hydrophobic structure; mixing deionized water, acrylic acid and sodium hydroxide uniformly, controlling the neutralization temperature to be lower than 30 DEG C, then sequentially adding a crosslinking agent and an initiating agent, and mixing uniformly to obtain a core solution; and soaking the shell material with the hydrophobic structure in the core solution for 30-60 minutes, putting the shell material after filtration into a drying oven for reaction for 1-3 hours at 60-80 DEG C, and finally carrying out conventional after treatment to obtain the concrete internal curing agent. According to the preparation method, the preparation process is simple and convenient, the chemical structure is easy to control, an outer layer hydrophobic structure of the prepared internal curing agent enables the water absorbing rate to be relatively slow and can significantly reduce the influence of the water absorbing rate on the workability of concrete, and an inner layer hydrophilic structure can improve the early autogenous shrinkage reduction effect to solve the difficult problem of concrete early cracking.

Water is slowly added to dry grain having a water content previously adjusted to 10% to 15% at a water addition rate of 0.5% to 2.0%/h, in order to provide a water content of 20% to 30%, and thereafter, the grain is placed into a tank, followed by tempering for 2 to 15 hours.

The invention discloses a preparation method of fruit and vegetable crisps. The preparation method comprises the following steps of performing film painting treatment on fruit and vegetable blanks after being subjected to vacuum freezing and drying with a film painting solution which is prepared in advance, and performing drying after film painting, so as to obtain the fruit and vegetable crisps.Compared with the prior art, the preparation method has the beneficial effects that the method for performing film painting treatment on the fruit and vegetable blanks after being subjected to vacuumfreezing and drying is used, so that the effect of slowing the moisture absorption rate of the fruit and vegetable crisps can be realized; a film painting layer is used for packing the fruit and vegetable crisps, and the fruit and vegetable crisps are separated from air, so that moisture regain time is slow, the texture of the fruit and vegetable crisps is not liable to soften, and the texture ismaintained; and thereof, the shelf life of the frozen-fried fruit and vegetable crisps is prolonged. The fruit and vegetable crisps disclosed by the invention are subjected to film painting treatment,and film painting on the surface has the protective effect, so that the moisture absorption is not liable to cause, and the business application value of the frozen-dried fruits and vegetables is greatly increased.

The invention provides a controlled release preparation for doxazosin or salts thereof, wherein, the controlled release preparation comprises a drug containing layer and a boosting layer which have the weight ratio of 1 : 0.5 to 3. The drug containing layer comprises the doxazosin or salts thereof and a carrier, and the carrier is vinylpyrrolidone polymers which occupy 40 percent and 99 percent of the weight of the drug containing layer; the boosting layer at least comprises permeability promoting polymers occupying 10 percent to 80 percent of the weight of the boosting layer, 10 percent to 80 percent water insoluble polymers and 3 percent to 60 percent osmotic pressure accelerators; a controllable speed release drug of the doxazosin or the salts which can be accepted by the doxazosin in pharmacy causes the preparation to achieve the purpose that the doxazosin or the salts which can be accepted by the doxazosin in pharmacy can be released within about 24 h through once drug feeding daily.

The invention, which belongs to the technical field of kitchen cooking utensil control, discloses an reserved cooking method of a cooking utensil, thereby solvinga problem that in the prior art, excessive water absorption of rice grains is easily caused when the cooking utensil cooks rice under a reserved cooking function. The reserved cooking method comprises a reservation stage and a cooking stage including a water absorption stage and a heating stage. After the cooking utensil enters the cooking stage, the actual water absorption time of the water absorption stage is adjusted according to preset water absorption time and the reservation time of the reservation stage. The water absorption stage is no longer carried out according to the solidification time of the programbut is automatically adjusted according to the reservation time of the reservation stage, so that the excessive water absorption of rice grains in the water absorption stage in the reservation cooking function is avoided.

The present invention discloses a preparation method of a high water absorption composite body. The preparation method comprises: carrying out plasma etching treatment on an ES fiber hot air nonwoven fabric to produce a defective active catalytic site, adhering a high water absorption polymerization liquid to the ES fibers in an ultrasonic spraying manner, and carrying out in situ polymerization cross-linking on the surface of the hot air nonwoven fabric in a microwave reaction heating manner to form high water absorption resin particles so as to prepare the high water absorption composite body. The high water absorption composite body of the present invention is mainly used in paper diaper, sanitary napkin, products for incontinence, pet urine pads, and other absorption core bodies.

A powdered coal ash brick with high compression strength and no shrinking and cracking is proportionally made up of powdered coal ash, slags, gypsum, lime, and the mixture of concrete additive and water through pulverizing, proportional mixing, adding said mixture as cross-linking agent, die pressing and curing.

The invention provides a rubidium salt hemostatic sponge and application thereof. The rubidium salt hemostatic sponge comprises rubidium salt, collagen and a plasticizer, and the mass ratio of the rubidium salt, the collagen and the plasticizer is (1-8): 100: (1-5). The rubidium salt hemostatic sponge provided by the invention can be used as a trauma emergency hemostatic material, has good tissueadhesion, can rapidly stop bleeding and promote tissue healing, has no immunogenicity, sterility, no toxicity and no stimulation, has good biocompatibility and absorbability and degradability, and hasno side effect on the body. Meanwhile, the hemostatic wound protection bandage is simple to operate and convenient to use, is suitable for hemostasis of gunshot wounds and explosive wounds of all parts of the chest and abdomen and the whole body, and can also be conveniently used for hemostasis of special parts, such as neck, armpit and groin, of limb joints where a tourniquet is difficult to use.

The invention discloses a small multi-functional motorcycle. The small multi-functional motorcycle comprises a motorcycle body and a fire extinguishing system, the fire extinguishing system comprises a water supply unit fixed on the motorcycle body, a high-pressure self-sucking pump arranged in the water supply unit, and a straightway pump fixed on the water supply unit, the water inlet of the high-pressure self-sucking pump is connected with a spray pipe joint on the water supply unit while the water outlet is connected with a water inlet joint on the water supply unit, the water outlet of the straightway pump is connected with a high-pressure water pipe, the high-pressure water pipe is connected with the water inlet of the high-pressure self-sucking pump through an inlet valve, and the water inlet of the straightway pump is connected with a straightway pump water pipe. The small multi-functional motorcycle is smart, convenient to use, convenient to run on a narrow road and fast in pumping speed.

The invention discloses a rice processing method with good edible taste, which comprises the steps of: using the difference in aerodynamic properties of the rice and impurities to perform winnowing to remove the impurities mixed in the rice to achieve the purpose of purifying the rice; The selected rice is subjected to the treatment of removing the husk, and the hulled matter is removed to obtain the hulled rice, which includes brown rice, rice husk and bran; for the rice feed obtained in step (2), the The whitening room is used for rice milling, and the finished rice is obtained from the output. The whitening room includes a roller, a rice sieve and a rice polishing room to realize the combination of rice milling and rice polishing. Through the above method, the rice processing method with good eating taste of the present invention can ensure that the degree of fatty acid oxidation of the rice is low, the water absorption speed is slow in the process of making rice, and the obtained rice has good appearance, high freshness, good eating quality and good taste.

The invention provides an artificial cell membrane coating microcarrier for cell culture and a preparation method thereof. The microcarrier provided by the invention takes konjac glucomannan microspheres as a matrix, and an artificial cell membrane coating microsphere is made by a biomimetic new material. The preparation method of the microcarrier comprises the following steps: respectively washing the matrix microspheres with petroleum ether and absolute ethyl alcohol, and drying for later use; dissolving 2-methacryloyloxyethyl phosphate choline (MPC) and n-butyl methacrylate in ethanol, polymerizing into an artificial cell membrane material under the effect of an initiator azodiisobutyronitrile (AIBN), diluting to 2 percent concentration for later use; adding the washed konjac glucomannan microspheres to an artificial cell membrane ethanol solution and soaking, and drying by a rotary evaporator in a vacuum, thus obtaining a microcarrier product. The artificial cell membrane materialcovers the surface of the microcarrier evenly and is connected firmly, has the advantages of avirulence, good cell adhesion, degradability, capability of easily eluting cells without adhesion, and thelike, the cost of the prepared microcarrier is low, the production process is simple, and the period is shorter, thus being beneficial for industrial production.