35 results about "Artificial urine" patented technology

The invention discloses a water-absorption acrylate foam material and a preparation method and application thereof. The water-absorption acrylate foam material has certain toughness and has a tiny porous size; the average deionized water absorption rate, the average salt water absorption rate, the average artificial urine absorption rate and the average artificial blood absorption rate are larger than 15g/g; the water retention rate within half an hour is over 80 percent; the water-absorption acrylate foam material is suitable for dispersion and storage of water-containing fluid, so that a block-type soft water absorption material disclosed by the invention is very suitable to be applied in the field of toilet articles.

A water-absorbing goods having excellent absorption performance in practical use is to be provided at low price. A particulate water-absorbing agent provided by one aspect of the present invention is a particulate water-absorbing agent comprising a polyacrylate salt-type water-absorbing resin as a main component, and satisfying the following (a) and (b): (a) absorption capacity without load in artificial urine (A) is equal to or higher than 60 g/g; and (b) an increase rate of absorption capacity without load in artificial urine (B) relative to artificial urine (A) is equal to or larger than 20%. In addition, a particulate water-absorbing agent provided by another aspect of the present invention is a particulate water-absorbing agent comprising a polyacrylate salt-type water-absorbing resin as a main component, and satisfying the following (c) and (d): (c) absorption capacity without load in artificial urine (A) is equal to or higher than 60 g/g; and (d) weight average molecular weight (Mw) of the main chain of the water-absorbing resin is equal to or higher than 1,000,000 and molecular weight distribution (Mw/Mn) thereof is equal to or smaller than 3.3.

The invention discloses a water-absorbing acrylate foam material and a preparation method and application thereof. The prepared water-absorbing acrylate foam material has a certain toughness and is small in foam hole size and suitable for dispersing and storing waterborne fluid, the average deionized water absorption rate, average saline water absorption rate, average artificial urine absorption rate and average artificial blood absorption rate are larger than 15g/g, and the water retention rate within half an hour is over 80 percent. Therefore, the massive soft water-absorbing material is applied to the field of hygienic products.

The invention belongs to the field of biological macromolecular probes, and particularly relates to a fluorescent reagent and a method for measuring human albumin and efficiently and quickly identifying the human albumin and bovine serum albumin. A schiff base organic compound with a typical torsion intramolecular charge transfer feature is designed and synthesized on the basis of a triphenylamine and 15-crown-5 ester structure, and is used as the fluorescent reagent; protein is added into a neutral phosphate buffer solution, the human albumin can be quickly identified from several types of common proteins according to compound fluorescent spectrum features, and a standard curve is established to quantitatively measure the contents of serum proteins in a buffered saline solution and artificial urine. The concentration of the probe reagent is 50mu M, and the 5mu M human albumin can be identified; after quantitative detection, the range of the human albumin in the buffered saline solution is 0 to 5.6mu M, and the minimum detection limit is 0.112mg/L; the range of the human albumin in the artificial urine is 0 to 1.2mu M, and the minimum detection limit is 1.95mg/L.

The invention relates to an intelligent urine detector, a urinal and a urine detection method. The intelligent urine detector comprises: a feeding mechanism comprising a storage box and a pushing unit, wherein the storage box is filled with a plurality of test paper boxes, and the pushing unit is used for pushing the test boxes to a two-dimensional conveying mechanism; the two-dimensional conveying mechanism which is controlled to move along a first direction to realize feeding or discharging or is controlled to move along a second direction to realize urine taking or supplied urine information reading; a scanning mechanism used for reading the urine information in the test paper boxes; and a control mechanism connected with the feeding mechanism, the conveying mechanism and the scanning mechanism to control coordinative work of all the mechanisms in order to realize intelligent urine detection. The intelligent urine detector, the urinal and the urine detection method effectively overcome the disadvantages of artificial urine detection, and realize feeding, automatic urine taking, urine information reading and discharging through adopting the cooperation of the feeding mechanism, the two-dimensional conveying mechanism, the scanning mechanism and the control mechanism.

The invention provides a preparation method of a straw-base composite water-absorbing material. The method comprises the following steps: taking fresh straws, airing, pulverizing into fine powder, adding the fine powder into a composite-enzyme-containing phosphate buffer solution, heating for fumigation, mixing the activated straw fine powder, potassium persulfate, a silane coupling agent, water, dodecyl-sulfonate-modified starch and polyglycerol ricinoleate, carrying out reaction at 70-90 DEG C to obtain a graft, adding lecithin, gelatin, glyceryl triacetate and n-butyl titanate into the graft, dropwisely adding a NaOH solution, stirring, and carrying out reaction at 40-50 DEG C; and finally, filtering out the reaction product, cleaning and drying to obtain the water-absorbing material. The maximum water absorbency of the water-absorbing material is 633.33 g/g, the maximum salt absorbency is 133.33 g/g, and the maximum artificial urine absorbency is 133.33 g/g. The water-absorbing material has the advantages of high salt resistance, favorable water absorptivity and favorable water retention property.

The invention discloses a high-strength water-absorbing acrylate foam material as well as a preparation method and application thereof. The tensile strength of the prepared high-strength water-absorbing acrylate foam material is remarkably enhanced. The product is small in dimension of micropore, and the average deionized water absorption, the average saline absorption, the average artificial urine absorption and the average artificial blood absorption are greater than 15g/g, the water-retention rates within half an hour are over 80%, and the product is suitable for being dispersed and stored in water-containing fluids. Therefore, the bulky flexible water absorbing material disclosed by the invention is very suitable for being applied to the field of hygienic products.

The invention discloses a zinc-silver antimicrobial bibulous acrylic ester foam material as well as a preparation method and application thereof. The cellular size of the prepared foam material is micro; the average deionized water absorption rate, the average saline water absorption rate, the average artificial urine absorption rate and the average artificial blood absorption rate of the prepared foam material are respectively greater than 18g/g; the water retenticities of the indexes in one hour are over 85 percent respectively; the zinc-silver antimicrobial bibulous acrylic ester foam material is suitable for dispersing and storing water-containing fluid; in addition, by adding zinc-silver antibacterial particles, the foam material has good antibacterial performance; the antibacterial rates of the foam material for escherichia coli and staphylococcus aureus respectively reach over 95 percent. Therefore the block soft water-absorbing material disclosed by the invention is particularly suitable for the field of sanitation supplies.

The invention discloses a preparation method of a sequence-controllable supramolecular polymer. The method comprises the following steps: binding a guest molecule with aggregation-induced emission characteristics with CB[8] to generate a ternary complex; and by taking the ternary complex as a monomer, carrying out further self-classification polymerization to obtain the sequence-controllable supramolecular polymer. According to the invention, a sequence-controllable supramolecular polymer can be formed through host-guest interaction between a guest molecule with a simple structure and a CB[8]molecule, and the generated sequence-controllable fluorescent supramolecular polymer can be used for drug detection in urine, can detect morphine in artificial urine, and has good stability, sensitivity and accuracy.

The invention provides a rigid ureteroscope/flexible ureteroscope teaching mold which comprises a urinary system model; artificial urine can be injected into the urinary system model to simulate the urine internal environment of a urinary system; the urinary system model comprises a kidney model, a bladder model, a ureter module, a calculus model, a urethra model and a fixing device; the kidney model is provided with a water injection port; and the kidney model, the bladder model, the ureter model and the urethra model are made of rubber materials. The invention further provides preparation and operation methods of the rigid ureteroscope/flexible ureteroscope teaching mold. According to the rigid ureteroscope/flexible ureteroscope teaching mold and the preparation and operation methods thereof, the defects that a urinary system teaching mold used for operation of a traditional rigid ureteroscope/flexible ureteroscope is low in simulation performance, single in stone lesion characteristic and poor in operability are overcome.

The invention relates to testing equipment for a large-absorption-capacity paper diaper. The testing equipment comprises an experiment table, a urine supplying device, a pressurizing device, a measuring device and a feedback device. According to the testing equipment for the large-absorption-capacity paper diaper, the testing process is divided in detail, the urine supplying device can automatically and quantitatively spray artificial urine to the paper diaper, a timer can control the time of each experiment step, and a balance assembly can measure all needed experiment data; and a user and atester only need to start a testing device through a button, then the experiment data can be directly obtained on a display screen of the testing device, manual adding of an experiment reagent and time control are not needed, an intelligent experiment is realized, and the burden on the tester is relieved.

The invention discloses a silver antibacterial breathable water absorbing acrylic ester foam material and a preparation method and application thereof. The prepared foam foam material has small pore size, and average deionized water absorption rate, average salt water absorption rate, average artificial urine absorption rate and average artificial blood rate greater than 18 g/g, 1 h water retention higher than 85%, ans is applicable to dispersion and storage of aqueous fluid. In addition, due to the addition of silver antibacterial particles, the foam material has good antibacterial property, and has antibacterial rate on colibacillus and Staphylococcus aureus higher than 95%; due to the addition of light calcium carbonate, the material has gas transmission rate greater than 1.5*10<-2> cm<3> / (m2.Pa.d) and shows good permeability. Therefore, the massive soft water absorbing material is particularly applicable to the field of sanitary products.

The invention discloses an antibacterial, breathable and water-absorption silver-zinc acrylic ester foam material as well as a preparation method and application of the antibacterial, breathable and water-absorption silver-zinc acrylic ester foam material. The foam hole size of the prepared foam material is small, the average deionized water absorption rate, average saline water absorption rate, average artificial urine absorption rate and average artificial blood absorption rate of the prepared foam material are larger than 18g/g, and the water retention rate within 1 hour is larger than 85%, so that the foam material is suitable for dispersing and storing water-containing fluids; in addition, antibacterial silver-zinc particles are added, so that the foam material has favorable antibacterial performance, and the highest antibacterial rate for Escherichia coli and staphylococcus aureus is up to more than 95%; and due to the addition of light calcium carbonate, the gas permeation rate is larger than 1.5*10<-2> cm<3>/(m<2>.Pa.d), so that the air permeability is good. Therefore, the lumpy soft water-absorption material disclosed by the invention is particularly suitable for the field of hygienic products.

The invention discloses a method for measuring the air permeability of a paper diaper product, and relates to the technical field of hygienic product detection. The method comprises the following steps of: S1, placing a to-be-detected paper diaper product in an environment with constant temperature and humidity for at least 2 hours in advance; S2, preparing artificial urine for testing the paper diaper product; S3, enabling a preset amount of artificial urine to flow to the surface of the to-be-detected paper diaper product so as to form a to-be-detected sample; S4, detecting the air flow value of the to-be-detected sample by adopting a fabric air permeability tester; and S5, calculating the air permeability of the to-be-tested sample according to the air flow value. The measurement method is simple to operate and quick in response, can accurately measure the air permeability of the paper diaper product, greatly improves the measurement accuracy, and more intuitively reflects the air permeability of the paper diaper product in a moisture absorption state.

The invention discloses a preparation method of cassava residue/polyvinyl alcohol semi-penetrating network super absorbent microspheres. The manioc waste/polyvinyl alcohol semi-penetrating network super absorbent microsphere material is prepared by taking manioc waste and polyvinyl alcohol as raw materials, modified bentonite as an additive, acrylic acid and acrylamide as grafting monomers, tetramethylethylenediamine as a cross-linking agent and potassium persulfate as an initiator through an inverse emulsion method. The maximum deionized water absorption rate of the water absorption microspheres reaches 320 g/g, the water absorption rate can reach 80 g/g within 10 s, and the water absorption rate reaches saturation within 50 s; and the salt absorption rate reaches 65 g/g, water absorption saturation is achieved within 1 min, in addition, the absorption rate of artificial urine reaches 28 g/g, and the absorption rate of artificial blood reaches 42 g/g. The method is easy to operate, the process is controllable, raw materials are low in cost and easy to degrade, and the prepared microspheres are high in liquid absorption rate and good in salt tolerance and have wide application prospects in the fields of hygienic products for children and adults, agricultural water retention materials and the like.