40 results about "Water absorption coefficient" patented technology

Disclosed is an induction heating type pure water heating apparatus capable of heating pure water with efficiency and without contaminating pure water. The apparatus is characterized by including a susceptor formed of glassy carbon with a water absorption coefficient of 0.5 mass % or less, and capable of contacting with pure water, a container made of a magnetic flux transmissive material, and formed so as to accommodate the susceptor and so as to allow pure water to pass therethrough, and an induction coil disposed in such a state as to surround the container or as to be adjacent to the container.

The invention provides phase change thermal storage-based novel energy-storing and heat-insulating mortar and a preparation method thereof. The preparation method comprises the following steps: adsorbing an organic phase change material into micropores of expanded perlite through vacuum impregnation, and coating an encapsulant on the surface of phase change energy-storing aggregate through secondary vacuum impregnation; and replacing partial expanded perlite fine aggregate by the composite phase change energy-storing aggregate to prepare the energy-storing and heat-insulating mortar. The phasechange thermal storage-based novel energy-storing and heat-insulating mortar prepared does not generate macroscopic liquid phase when performing phase change, obstructs the influence of an alkaline environment on an acid phase change material, ensures better combination of the phase change material and the expanded perlite heat-insulating aggregate, has good thermal storage and heat insulation performance, can effectively improve thermal comfort of buildings, and also has the advantages of low hygroscopic coefficient and good water resistance.

The invention provides bismaleamic acid, bismaleimide and cured product thereof. Particularly, the invention provides a bismaleimide having high heat resistance, a low dielectric constant, a low water absorption coefficient and excellent solvent solubility, a bismaleamic acid capable of generating the above bismaleimide, a cured resin composition containing the above bismaleimide and a cured product obtained by curing the above resin composition. Bismaleamic acid, bismaleimide, the cured resin composition containing the bismaleimide and the cured product obtained by curing the resin composition are obtained by reaction between diamine of bifunctional phenylene ether oligomer and maleic anhydride, wherein the diamine of bifunctional phenylene ether oligomer is obtained by introducing aromatic amino into two terminals of the bifunctional phenylene ether oligomer.

An insulated wire includes a conductor and an insulating layer formed on an outer periphery of the conductor, and the insulating layer is composed essentially of a polyimide resin having a repeating unit A represented by Formula (1) as a part of a molecular structure, in which a water absorption coefficient is not greater than 2.8% after 24 hours under condition at temperature of 40° C. and humidity of 95%

A touch panel that includes a polarizing plate, and used as an input device of a display unit of a personal computer, a word processor, an electronic notebook and the like is structured by one or more films that have a low heat contraction coefficient and a low water absorption coefficient, which remarkably suppress occurrence of concave deformations of the polarizing plate after exposure to a high temperature and soaking in water, avoiding short circuits.

The invention relates to a long optical path sea water absorption coefficient measuring device and a working method thereof. The device comprises a control and data acquisition module (1), a long optical path field measurement module (2), a cleaning and laboratory measurement module (3), wherein the control and data acquisition module (1) is respectively connected with the long optical path field measurement module (2) and the cleaning and laboratory measurement module (3). The working method of the long optical path sea water absorption coefficient measuring device comprises a cleaning mode, a field in-site measurement mode and a laboratory measurement mode. The invention has simple structure, simple and convenient operation as well as low power consumption, and can meet the application demands of ultraviolet band 200-400nm spectral analysis and high-sensitivity measurement need in sea water absorption coefficient measurement.

A polycarbonate resin composition comprising a polycarbonate resin and 0.001 to 1 parts by weight of an N—R type (R represents an alkyl group) hindered amine-based optical stabilizer per 100 parts by weight of the polycarbonate resin, wherein the polycarbonate resin comprises 40 mol % or more of a recurring unit (A) represented by the following formula and satisfies the following formulas (i) to (v), and the resin composition has excellent heat resistance, a low water absorption coefficient and high transparency, and suppresses deterioration during long-term use:(i) a metal compound comprising a negative ion represented by the following formula (B) and a positive ion constituted by a metal is used as a polymerization catalyst in an amount of 1×10−9 to 1×10−5 molar equivalent relative to the total diol compounds used for polymerization;(ii) the specific viscosity measured with a methylene chloride solution at 20° C. is 0.23 to 0.60;(iii) the glass transition temperature is 100° C. to 160° C.;(iv) the saturated water absorption coefficient is 2.5% or less; and(v) the relationship between the glass transition temperature (Tg° C.) and the saturated water absorption coefficient (Wa %) satisfies the following formula (I):2.5≦TW value=Tg×0.04−Wa  (I)wherein R1 is an alkylene group, a cycloalkylene group, or an arylalkylene group which has 1 to 22 carbon atoms and may be linear or branched.

An object of the present invention is to provide an adhesion-preventing material which is capable of effectively preventing the surfaces of organs from adhesion, and which can be absorbed in the body with high safety and produced with ease and has high practical utility, as well as to a process for preventing adhesion by using the adhesion-preventing material.The present invention provides (1) an adhesion-preventing material comprising a crosslinked water absorbent poly-γ-glutamic acid as an effective ingredient; (2) the adhesion-preventing material described above, wherein the crosslinked water absorbent poly-γ-glutamic acid is in the form of powder having a water absorption coefficient in the range of 800-2000; (3) a process for preventing organ from adhesion, comprising a step of bringing the adhesion-preventing material described above into contact with the surface of a local organ; and (4) the process for preventing adhesion described above, wherein the surface of the local organ is in wet state.

A wet paper conveyance belt (1) comprises a wet paper side layer (31) containing hydrophilic fibers (30), and a machine side layer (32). A basic cloth (33) provided in the belt is composed by laminating a first woven cloth (34) arranged on the wet paper (W) side, and a second woven cloth (35) arranged on the press roll (10) side. A part of the hydrophilic fibers (30) is exposed to the surface (37) of the wet paper side layer (31). The weft (36) of the first woven cloth (34) and the second woven cloth (35) is a yarn of low water absorption coefficient. When the hydrophilic fibers (30) are formed in the wet paper side layer (31) of the belt (1) by needle punch, the dimensional extension of the belt width due to water absorbing action of the hydrophilic fibers (30) can be suppressed.

The invention relates to an array light source light splitting device and method. The device comprises a seed source for inputting signal light, fiber amplifiers connected with the seed source, and a light splitter connected with the fiber amplifiers, wherein the light splitter is provided with N paths of fibers, the N is a natural number, and the signal light of the seed source is split by the light splitter into N paths which are outputted. According to the device, the signal light of the seed source is split by the light splitter into the N paths which are outputted, the N paths of signal light are amplified through the amplifier of each branch for power amplification, and multiple paths of signal light are outputted; repetition frequency of 1550 nanometer laser can reach megahertz, so the laser has a relatively high water absorption coefficient, when the laser in with the wave band radiates to eyes, an eye damage threshold is relatively high, but the wave band laser of the device has eye safety characteristics; a synchronization work mode can be employed in a light source, and the device has wide application prospects in the automatic driving and 3D scanning field.

A copolycarbonate having a low water absorption coefficient and excellent heat resistance, low temperature characteristics and surface hardness.The copolycarbonate (Z) of the present invention contains a unit (A) represented by the following formula and a unit (B) represented by the following formula (B) as main recurring units, the (A / Bn=1) molar ratio of the unit (A) and the unit (Bn=1) being 40 / 60 to 99 / 1. The unit (Bn=1) is a single unit constituting a block.(R1) is an alkylene group or cycloalkylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. R2 is an alkylene group, cycloalkylene group or arylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. “r” and “s” are each independently an integer of 0 to 4 “l” is 0 or 1. “m” is 0 or 1. “n” is an integer of 1 to 100.)

The invention discloses a method for immobilizing microorganisms and repairing the defects of cement-based materials by adopting sodium carboxymethyl cellulose, in particular to a method for filming protection by utilizing the enzymatic conversion action of microorganisms, adhering strains to the surface of cement stone to grow, and mineralizing the surface of the cement stone to deposite a calcium carbonate layer. By adopting the method, a continuous, compact and hard calcium carbonate protection layer is generated and tightly combined with the surface of a substrate. Due to the tight adhesion of the continuous and compact calcium carbonate layer on the surface, the capillary water-absorbing coefficient of a cement stone test piece is obviously decreased from original 1688g / (m2*hl / 2) to 298.6g / (m2*hl / 2) after covering a film so that the amplitude is reduced by over 80%, and the protection effect is remarkable. The invention has rich resources, clean environment, low cost and simple process.

The invention provides a doped optical fiber amplifier and a work method thereof. The amplifier comprises a seed source inputting signal light, a first isolator connected to the seed source, a coupler connected to the first isolator, a pump laser, a doped optical fiber, a second isolator connected to the doped optical fiber, an optical splitter connected to the second isolator and a joint connected to the optical splitter, wherein the pump laser and the doped optical fiber are connected to the coupler. The joint outputs signal light of the seed source. In the invention, an optical fiber doped with a rare earth element is used to realize 1550 nanometer signal light amplification under an effect of the pump laser. A repetition frequency of 1550 nanometer laser can reach megahertz. The laser possesses a high water absorption coefficient. When laser of a wave band radiates eyes, a damage threshold to the eyes is high so that the laser of the wave band possesses an eye safety characteristic. A light source adopts a standard pluggable-type optical module packaging form, and a wide application prospect is possessed in automatic driving, 3D scanning and other fields.

The invention discloses transformer-used insulation paper with a low water absorption coefficient and a small shrinking percentage. The insulation paper is prepared from, by weight, 0.6-0.7 part of a silane coupling agent kh 550, 6-8 parts of mica, 1-1.5 parts of glycine, 0.3-0.4 part of a silane coupling agent kh 570, 0.1-0.2 part of emulgator OP-10, 0.2-0.3 part of sodium dodecyl sulfate, 2-3 parts of E44 epoxy resin, 0.5-0.6 part of polyacrylamide, 500-550 parts of pulp boards, 2.8-3.4 parts of silicon carbide fibers, 1-1.5 parts of magnetization calcium, 1.2-1.5 parts of steelmaking slag powder, 3.2-3.5 parts of polyacrylonitrile fibers and a proper amount of deionized water. The preparation method of the insulation paper is simple, and the prepared insulation paper has a low water adsorption property and small shrinking percentage, is not prone to deformation, has good prospect when used for transformers, lowers potential safety hazards and is worthy of popularization.

The invention relates to a method for detecting quality of traditional Chinese medicine decoction by means of a relative density, and can effectively solve the problem of traditional Chinese medicine decoction quality detection. The method comprises the steps of: measuring a water absorption coefficient of traditional Chinese medicine decoction pieces; calculating a water adding amount during the decoction of the traditional Chinese medicine decoction, and measuring a traditional Chinese medicine decoction piece conversion relative density platform value; measuring a decocting rate of the traditional Chinese medicine decoction; calculating a relation between the decocting rate of the traditional Chinese medicine decoction and a prescription dosage; and detecting the relative density of the traditional Chinese medicine decoction, wherein a theoretical relative density of the decoction can be calculated when total weight of a prescription, dosages of the decoction pieces in the prescription and unit conversion relative density platform value are known, and whether the quality of the traditional Chinese medicine decoction meets the requirement can be determined by comparing the actual measured relative density with the theoretical relative density. The method provided by the invention is novel and unique, easy in operation and stable and reliable, has good detection effect, is high in accuracy rate, and is the innovation in quality detection of the traditional Chinese medicine decoction.

The invention discloses a segmented light path-based water absorption coefficient measuring device. The segmented light path-based water absorption coefficient measuring device comprises a light source unit, a sample pond unit, a detecting unit, a sealing unit, a control unit and the like, wherein the light source unit is used for emitting light; the sample pond unit is composed of a light incident window, a diaphragm group, a semi-transparent lens group and a light collector sequentially arranged in an incident light path; diaphragms and semi-transparent lenses are distributed in an alternatemode; the detecting unit comprises optical couplers, optical fibers, a photoswitch and a spectrograph; the reflecting light path of every semi-transparent lens is provided with one optical coupler, and every optical coupler is connected with the photoswitch and the spectrograph through the corresponding optical fiber; the light source unit, the photoswitch and the spectrograph are connected withthe control unit. Compared with traditional water absorption measuring devices, the segmented light path-based water absorption coefficient measuring device achieves light detection on signals of different absorption lengths, thereby expanding the absorption coefficient measurement range.

The invention provides a device for testing a water absorption coefficient of a material and a method for measuring the water absorption coefficient of the material. The device includes a constant temperature water bath, a temperature control water tank and a test water tank, wherein the constant temperature water bath is used for providing constant temperature water for the temperature control water tank; the temperature control water tank is connected to the constant temperature water bath through a water pipe and used for storing the constant temperature water, wherein a closed space can beformed by the temperature control water tank, and a bracket for supporting a test water tank is arranged at the bottom of an inner side of the temperature control water tank; and the test water tankis placed on the bracket and used for storing test water, wherein a support for supporting a test piece is arranged at the bottom of an inner side of the test water tank, the test water tank is partlyimmersed in the water in a control water tank, and the test water tank is made of a heat conduction material. An experimental device for constructing a test microenvironment and controlling temperature by circulation of constant temperature water is proposed, so that the water absorption coefficient of the material is further measured accurately. The temperature of the test environment can be changed by adjusting the temperature of circulating water to study changes of the water absorption coefficient of the material at the temperature. In addition, temperature control is more accurate compared with the prior art, and the temperature can be adjusted and controlled in a wider range.

The invention discloses a method for calculating and controlling the amount of water added to decoction, comprising: an intelligent terminal acquires and outputs the name and weight data of each single Chinese medicinal material that needs to be decocted in a prescription of traditional Chinese medicine, and a cloud computing platform receives the data of each single Chinese medicinal material Name and weight data, and match the name of the Chinese herbal medicine with the pre-stored data of the water absorption coefficient of the single Chinese herbal medicine, and retrieve the water absorption coefficient data of each single herbal medicine in the Chinese medicine prescription that needs to be decocted, and decoct according to the needs The water absorption coefficient data and weight data of each single Chinese medicinal material in the traditional Chinese medicine prescription are calculated by using the pre-stored water addition function calculation formula to obtain the water addition data, and output; the intelligent terminal receives and displays to the user; the invention also discloses correspondingly A calculation and control system for the amount of water added to decoction, a cloud computing platform, and an intelligent terminal; cloud computing technology is used to realize intelligent calculation control for the calculation of the amount of water added in the decoction process, which brings convenience to patients.

A novel aromatic diamine compound obtained by introducing aromatic amino groups into both terminals of a specific bifunctional phenylene ether oligomer and a novel aromatic dinitro compound obtained by introducing aromatic nitro groups into both terminals of a specific bifunctional phenylene ether oligomer, these compounds being used as raw materials for obtaining high molecular weight materials having high heat resistance, a low dielectric constant, a low dielectric loss tangent and a low water absorption coefficient.

The invention discloses an automatic water adding method for decoction of traditional Chinese medicine decoction pieces. The automatic water adding method comprises the following steps: obtaining thename and the weight of each medicinal material in a recipe; inquiring the water absorption coefficient of the medicinal materials according to the name of the medicinal materials; calculating the water adding quantity for decoction of the recipe according to the water absorption coefficient and the weight of each medicinal material and the dose number of the recipe, wherein the dose number is thenumber of parts divided after decoction of the recipe; and controlling water addition of a water adding device according to the water adding quantity. According to the automatic water adding method disclosed by the invention, a method of scientifically controlling the water adding quantity for decoction through the water absorption coefficient of single medicinal materials is adopted, so that thewater adding quantity of the automated water adding device can be guided to be closer to the practical water adding quantity, and collected liquid medicines required for decoction can be met.

A novel aromatic diamine compound obtained by introducing aromatic amino groups into both terminals of a specific bifunctional phenylene ether oligomer and a novel aromatic dinitro compound obtained by introducing aromatic nitro groups into both terminals of a specific bifunctional phenylene ether oligomer, these compounds being used as raw materials for obtaining high molecular weight materials having high heat resistance, a low dielectric constant, a low dielectric loss tangent and a low water absorption coefficient.

A 1216-nm all-solid Raman laser structurally comprises a 1079-nm fundamental frequency light resonant cavity front cavity mirror, Nd:YAP crystals, a 1079-nm quarter-wave plate, KD*P electro-optical modulation Q crystals, a Raman resonant cavity front cavity mirror, Raman crystals Ba(NO3)2 and a coupling output mirror which are all arranged in sequence to have the same optical axis. Pumping sources are placed on the two sides of the Nd:YAP crystals. Because the side pumping mode is adopted for the 1216-nm all-solid Raman laser, the output power of the Raman laser can be substantially promoted; meanwhile, because the inner cavity type Raman laser structure is adopted, the high power and the high density of pumping light in the cavity can be fully utilized, and the threshold of the inner cavity type Raman laser is lower. Because the water absorption coefficient at the 1210-nm waveband is small and meanwhile CH2-rich fat has stronger absorption at the waveband than epithelial cells, lasers at the waveband can be used for imaging of subcutaneous fat, and the 1216-nm all-solid Raman laser has certain market prospects.

A polyimide demonstrates low coefficient of hygroscopic expansion and low water absorption coefficient when used as an insulation film. The polyimide is derived from a tetracarboxylic acid dianhydride containing ester group expressed by the general formula below, and a polyester imide precursor:wherein R is independent and represents a straight or branched-chain alkyl group with 1 to 6 carbon atoms or straight or branched-chain alkoxyl group with 1 to 6 carbon atoms, n is an integer of 0 to 4, and m is an integer of 2 to 4, but wherein, if m =2, n is an integer of 1 to 4.

The invention discloses a traditional Chinese medicine decoction piece decoction water addition calculation method. The method comprises the following steps of acquiring the name and the weight of each medicinal material in a prescription; according to the name of the medicinal material, acquiring the water absorption coefficient of the medicine material; and according to the water absorption coefficient of each medicine material, the weight and a prescription dosage, calculating the decoction water addition of the prescription, wherein the dosage is the number of the divided parts of prescription decoction. The invention also discloses a computer readable storage medium and an intelligent terminal. In the invention, through the water absorption coefficient of each medicine material, the decoction water addition is scientifically controlled so that liquid medicine which needs to be collected during decoction is satisfied and a phenomenon that the amount of the decoction liquid medicineis not stable is greatly reduced.

The invention discloses a testing device and method for an absorption coefficient of a concrete type material. The testing device comprises a digital display dynamometer, a rope, a hook, a water inlet pipe, a computer, a test piece and a water container; the upper part of the rope is connected with the digital display dynamometer, the digital display dynamometer is connected with the computer, and the lower part of the rope is connected with the upper part of the test piece via the hook; when the test piece is lifted via the hook and the rope, the surface of the lower part of the test piece and the upper edge of the water container are located on the same height, or the surface of the lower part of the test piece is slightly lower than the upper edge of the water container. The testing device disclosed by the invention is simple in structure, all the parts are easy and feasible to assemble. In the invention, the computer is used for monitoring and obtaining a value of tensile force borne in real time by the test piece, absorption heights corresponding a continuous time can be obtained through calculation, and thus, a more accurate absorption coefficient is obtained. By using the method, a plurality of test pieces can be tested at the same time, the computer is used for monitoring the change of a value of the force in real time, and more accurate experimental data can be obtained while time and labor are saved.

A polycarbonate resin composition comprising a polycarbonate resin and 0.001 to 1 parts by weight of an N—R type (R represents an alkyl group) hindered amine-based optical stabilizer per 100 parts by weight of the polycarbonate resin, wherein the polycarbonate resin comprises 40 mol % or more of a recurring unit (A) represented by the following formula, a metal compound comprising a negative ion represented by the following formula (B) and a positive ion constituted by a metal is used as a polymerization catalyst in an amount of 1×10−9 to 1×10−5 molar equivalent relative to the total diol compounds used for polymerization, and the resin composition has excellent heat resistance, a low water absorption coefficient and high transparency, and suppresses deterioration during long-term use,wherein R1 is an alkylene group, a cycloalkylene group, or an arylalkylene group which has 1 to 22 carbon atoms and may be linear or branched.

The invention provides an intelligent washing machine control device based on materials. The device comprises a clothes material determination module which is used for determining the water absorption coefficient of clothes, and determining the clothes material according to the water absorption coefficient; an experimental data acquisition module which is used for acquiring operation parameters of a plurality of washing machines of the same type from the cloud end, summarizing the operation parameters according to geographic positions, calculating the statistical magnitude of each operation parameter corresponding to each address position, and uploading the statistical magnitude to the cloud end; a geographic position acquisition module which is used for acquiring the current geographic position, setting driving parameters of the intelligent washing machine according to the statistical magnitude corresponding to the current geographic position and the clothing material, storing and curing the statistical magnitude of the current geographic position and the driving parameters of the clothing material, and uploading the driving parameters to the cloud; and a control module which is used for controlling washing of the clothes according to the driving parameters. Materials and geographic positions of clothes are considered, so that the washing process is more targeted, and clothes are used for washing.