Non-destructive preparation method of pile materials, down and fur raw materials and semi-finished product sample for the analysis and device for its implementation
FIELD: technological processes.
SUBSTANCE: device for non-destructive preparation of the pile materials, down and fur raw materials and semi-finished products sample for analysis includes the base and movable probes. The probes are made in the form of two parallel plates, each of which contains the working and fixing zone on one of the ribs. The mounting area of each plate is fixed on the basis forming the rotating couple, with ability to move apart the plates into different directions, and the rib plates form the gap with the base in the working area. The distance between the plates corresponds to the width of the analysed material blank specified sample. The plates working area length is at least half of the material sample maximum size. The method is concluded in placing the analysed material in the gap between the movably fastened between each other the base and the probes. The plate are moved apart in different directions and remove the hairs or pile, attached to the allocated area, into the opposite directions. Allocate the material sample for the analysis.
EFFECT: improvement of the quality, convenience and accuracy of sampling, its safety and integrity from the pile materials samples, down and fur raw materials and semi-finished product.
3 cl, 4 dwg
SUBSTANCE: safety of articles made of phenol-formaldehyde plastic is evaluated using a multichannel gas analyser (MAG-8) with 8 piezo-quartz resonators, the electrodes of which are modified by applying solutions of polydiethylene glycol succinate, polyethylene glycol sebacate, polyethylene glycol phthalate, polyphenyl ether, trioctylphosphine oxide, bee glue, beeswax and a composite sorbent - bee glue with iron (III) chloride. The mass of the sorbent film is 15-20 mcg after removing the solvent at 40-50°C for 15-20 min. The modified piezo-quartz resonators are then placed in the closed detection cell of the MAG-8 and held for 5 min to establish a stable zero signal. Further, 5.00 g of a ground sample of phenol-formaldehyde plastic is placed in a sampler which is then tightly closed with a polyurethane plug and held at 20±1°C for 15 min to saturate the gas phase with phenol vapour. Further, 3 cm3 of the equilibrium gas phase is collected through the polyurethane plug and injected into the closed cell of the MAG-8, followed by measuring the change in the oscillation frequency of the piezo-sensors for 120 s and calculating the area of the "visual print" Sv.p., Hz·s, using the formula Sv.p.=f(Cph), S=1959·Cph+35. For the calculation, a calibration curve of Sv.p., Hz·s versus phenol concentration Cph, mg/dm3 is plotted first. If the area Sv.p.≥130±10 Hz·s, the concentration of free phenol in the equilibrium gas phase over the phenol-formaldehyde plastic Cph>0.05 mg/dm3 exceeds the recommended level for food plastics, and if Sv.p.>260 Hz·s or higher, high content of phenol and formaldehyde is recorded.
EFFECT: invention provides fast evaluation of safety of articles made of phenol-formaldehyde plastic.
2 dwg, 1 ex
SUBSTANCE: invention relates to forecast of ageing processes of the synthetic polymer materials (SPM) depending on duration of their operation or storage. Analysis of the volatile organic compounds (VOC) migrating from SPM is performed by active sampling for sorbent, with further thermal desorption and gas chromatographic analysis. Forecast of the ageing processes of the material and estimation of toxicity of the gas discharge are performed as per dynamic of the qualitative and quantitative composition of gas discharge components in SPM initial state, and during artificial climatic thermal-humidity ageing. Dynamics analysis of the total gas discharge (ΣT) from each material is performed for all substances migrating from studied SPMs. Change of toxicity is estimated and forecast of the material ageing is performed as per developed indices of total gas discharge (ΣT) and as per hygienic index P=(ΣTinitial/ΣTn)/V, where Tinitial and Tn are indices of toxicity of gas discharge of each substance in initial state and after ageing, respectively, and ΣTinitial and ΣTn are total indices of toxicity of gas discharge of all components of SPM in initial state and after ageing, V is duration of ageing (year, month).
EFFECT: invention ensures high accuracy of the method of VOC qualitative and quantitative composition determination in gas discharge during materials ageing and the analysis results repeatability.
FIELD: machine building.
SUBSTANCE: invention relates to devices and method of the vibration protection of vehicles, in particular to shock-absorbing gaskets under bases of rails or bars of the pointworks, as well as for vibration protection of the construction structures and industrial equipment. Method of shock-absorber stiffness regulation includes addition of the synthetic polypropylene fibre from 0.1 to 12 wt % to wet porous rubber mixture based on unsaturated rubber or mixture of rubbers, as calculated to weight of the rubber mixture with further creation and vulcanisation of the produced products. At that amount of the polypropylene fibre is calculated as per the preliminary obtained by tests relationship between the shock-absorber stiffness and content of fibre within the specified range and ensuring the required stiffness.
EFFECT: method produces the porous shock-absorber with set Young's modulus characterised, in principle, by the linear relationship of the Young's modulus and content of the specified polypropylene fibre.
18 cl, 1 dwg, 8 tbl
SUBSTANCE: marker used is a soluble form of adhesion molecules of the family ICAM - sICAM-1, sICAM-2, sICAM-3. If observing sICAM-1 decrease from 29-37.2 to 23-24, sICAM-2 decrease from 19.1-21.1 to 13-14, sICAM-3 decrease from 23-30.7 to 14-17, the nutritional support is considered to be effective.
EFFECT: method enables increasing the assessment accuracy of the efficacy of the nutritional support accompanying ulcerative colitis.
FIELD: measurement equipment.
SUBSTANCE: invention relates to analytical chemistry of food production facilities. The method to assess safety of packing polymer materials for thermal processing of vacuumised food products includes formation of a polymer material in the form of a packet, its vacuumising, sealing and thermal processing, after which the packet is thermostatted at room temperature, 5.0 cm3 of dried air is pierced into it with a syringe, and in 5 minutes, not taking the syringe out, they take 3.0 cm3 of air. The produced sample is introduced into a tight cell of detection in a "piezoelectronic nose" device, which comprises an array of seven mass-sensitive piezosensors. They record variation of signals of piezosensors in pairs of equilibrium gas phase of the sample for 60 s with the interval of 1 s, the highest responses of piezosensors are formed into a mass-aromogram of maxima, the area of the mass-aromogram is calculated. Under identical conditions they analyse the standard sample of the polymer material. Assessment of safety of the polymer material is carried out by comparison of the area of mass-aromograms of the analysed sample and the standard sample. Difference of the area of mass-aromograms by more than 30.0±1.0% certifies non-compliance of the sample with the standard of the polymer package.
EFFECT: invention makes it possible to assess the level of possible emission of highly volatile compounds from polymer materials in process of thermal processing with increased accuracy and reduction of analysis time.
2 dwg, 1 tbl
FIELD: test equipment.
SUBSTANCE: invention refers to material test methods. Essence of the invention: a sample is first strained to the maximum set deformation, held in this deformation for a given time, compressed to the initial unloaded state, left in it for a given time, with further cyclic deformation with delays in each deformation stage of compression and tension, where at each tension cycle the set deformation is less than at the previous cycle, and the set deformation at each unloading cycle is larger than in the previous cycle.
EFFECT: more information on material properties from a sample test, new information represented by equilibrium stress-strain curve, dissipation loss, material softening after each tension/compression cycle, and relaxation curves together with material structure recovery curves for various deformations.
2 cl, 1 dwg
FIELD: measurement equipment.
SUBSTANCE: invention relates to measurement equipment, in particular, to devices for measurement of profile of surfaces of low-modular viscoelastic sheet materials of light industry, namely, man-made and natural leathers, etc. A device to detect profile of materials in deformed condition, comprising a base, a counting unit, a locating element, installed as capable of rotation around its axis, differing by the fact that the locating element is made in the form of a semi-cylinder with a hollow semi-cone and two limiting plates to fix a sample; the device comprises an additional counting unit fixed on the semi-cylinder, to detect bending radius of the investigated sample, arranged in parallel to the semi-cone guide, at the same time the main counting unit is made as combined, capable of displacement along the axis of rotation of the locating element and comprises a strain gauge motion sensor and a digital optical microscope.
EFFECT: device makes it possible to study hidden defects of natural leather and man-made materials, to determine variation of material relief under bending deformation.
2 cl, 1 dwg
SUBSTANCE: disclosed is a method of determining the glass-transition point of tetrazole-based polymer composite materials based, according to which the glass-transition point is determined from the change of slope of a curve of temperature versus the inverse of dielectric constant 1/ε'=f(T).
EFFECT: high accuracy and reliability of determining the glass-transition point of tetrazole-based polymer composite materials.
4 dwg, 1 tbl
SUBSTANCE: invention refers to medicine, namely to oncology, and can be used for recognising synchronous multifocal colorectal carcinoma. Substance of the invention consists in measuring preoperative blood follicle-stimulating hormone both in male and female patients suffering from colorectal carcinoma. If its concentration falls within the range of 26.01 to 60.91 IU/l in the females and of 2.71 to 5.67 IU/ml in the males, a single tumour is diagnosed in the patients, and if the hormone concentration is from 2.70 to 5.50 IU/ml in the females and from 12.88 to 52.04 IU/l in the males, the presence of synchronous colorectal new growths are stated. The method can be implemented at the preoperative stage; it is easily reproducible in the oncology hospital environment.
EFFECT: stating the presence of synchronous multifocal colorectal carcinoma.
SUBSTANCE: invention relates to field of producing carbon-carbon composite materials for various purposes, and is intended for comparative characteristic of impregnation of carbon fibre (CF) braids with melts of pitches, and can be used in improvement of technologies of producing carbon-carbon composite materials, possessing various properties, by modification or replacement of pitch binder and/or carbon fibre, for instance, in research laboratories, in particular, in carrying out laboratory work. To determine degree of impregnation of carbon fibre braids with pitches, carbon fibre braid is placed into glass tube in such a way that the end of braid protrudes from glass tube, and carbon fibres in braid are oriented along glass tube axis, with braid thickness being selected in such a way that it tightly fits glass tube, protruding end of carbon fibre braid is brought in contact with melted pitch and keep in such position, after which carbon fibre braid is extracted from tube and height of impregnation of carbon fibre braid with pitch is determined.
EFFECT: simplification and acceleration of determination are achieved.
1 ex, 3 dwg
FIELD: measurement equipment.
SUBSTANCE: digital height gage is fitted with the pointer indicator, on a base surface a gaging rod is placed, the indication of the pointer indicator is zeroed, the indication of the information unit of the height gage is zeroed, the gaging rod is replaced by a detail to be measured, the indication of the pointer indicator is zeroed and the indication of the information unit of the height gage is registered, and the linear size of a detail is determined by the linear size of the gaging rod and the algebraic sum of the fixed indication of the information unit of the height gage or the difference of the linear size of the gaging rod and the fixed indication of the information unit of the height gage.
EFFECT: improvement of accuracy of measurements and possibility of execution of measurements on a sloped bearing surface.
FIELD: measurement equipment.
SUBSTANCE: invention relates to the field of mechanical means of measurement, namely, to accessories for measurement of certain parameters of parts (length, width, thickness, etc.), specifically - to sets of gauge rods, and may be used in different areas of machine building, for instance, in production of tools, in assembling for measurement of gaps, in tuning of pointer-type measuring instruments, etc. In the universal set of gauge rods, comprising five groups of elements, dimensions of all elements of the set are subject to dependences (1)
EFFECT: improved manufacturability of sets, convenience (efficiency) in operation.
FIELD: measurement equipment.
SUBSTANCE: invention relates to measurement equipment and is designed for measurement of length of flexible lengthy materials, such as belt wires, and other materials of flat belt type of rectangular cross section with thickness of 0.1…2 mm and width 4…25 mm, with maximum external diameter of a roll equal to 130 mm. It is used for convenience of measurement of length of rolls of a belt wire during incoming inspection when accounted and accepted from a supplier. The device for measurement of length of flexible lengthy materials comprises a base 1, a length counter 6, on the output shaft of which there is a metering wheel 7, a master disc 15, a disc 12, from which the material is wound, a clamp, guide rolls 10, a reducer 13 with a step-up single-stage conical gear, on the master disc 15 there is a slider 16, having one extent of freedom, on the disc 12, from which the material is wound, there is a detachable left disc 28, and on the master disc 15 there is a detachable right disc 29, in the clamp the clamping element is a ball single-row bearing 19.
EFFECT: higher accuracy of measurement, simplified process of materials detachment and installation.
FIELD: textile, paper.
SUBSTANCE: method includes fibre sampling, mechanical test of fibres and detection of average length. According to invention, during mechanical test, work is identified, which is required to pull a part of fibres previously fixed in a clamp from their overall mass, and the average length of the fibre is calculated depending on the value of spent work.
EFFECT: speeding up tests in detection of average length and provision of the possibility to automate the testing process and to analyse produced results.
FIELD: textile, paper.
SUBSTANCE: method involves sampling the fiber, preparation a strip made of it, mechanical testing of fibers and determination of average length. According to the invention, a sliver in the mechanical testing is delivered through a gradual entry into one of the ends of the tube, from the second end of which the air is removed; weight of the cut-off section of strip is determined, and the average length of fiber is calculated depending on this weight.
EFFECT: acceleration of tests for determining the average length and enabling of automation of test and analysis of the results obtained process.
FIELD: measurement equipment.
SUBSTANCE: invention relates to mechanical measurement equipment, in particular - to devices for measurement of certain parametres of components (length, width, thickness, angle value etc) and may be used in different machine building sectors. In the set of end measures consisting of a group of elements with the first one containing a single element with the minimum measurement size while the other groups containing elements differing from each other in terms of size by a certain value. In the second group each element differs from the next one by a value equal to the difference between the size of the first element of the second group and the size of the element of the first group with the sizes of the elements of different groups interconnected and the elements designed so that to enable their confrication to each other. The sizes of the first element of the third and the following groups are equal to the sum of values of size of the last element of the previous group and the value of the difference between the values of sizes of the last element of the previous group and the first element of the group preceding the previous one. The sizes of the second and the following elements in groups beginning with the third one are equal to the sum of the values of the size of the previous elements and a constant value valid for each group which is equal to the sum of the value of the difference between the values of sizes of the last element of the previous group and the first element of the group preceding the previous one and the difference between the sizes of the neighbouring elements of the previous group. The number of elements in group 2 and further is subject to the dependencies connecting the number of elements in groups, total number of measures in a set and the number of groups in the set equal to 6.
EFFECT: improved characteristics and enhanced manufacturability of the sets.
FIELD: physics; measurement.
SUBSTANCE: invention is related to method, and also to device for measurement of component amount coming from surrounding gas atmosphere and received by parts in process of thermochemical treatment of metal parts. Sample, lengthwise size of which considerably exceeds its cross size, is exposed to gas atmosphere impact. Change of sample length in time in lengthwise direction is measured, being the result of component transfer from gas atmosphere, and measured change of length is used for determination of component amount that was transferred from gas atmosphere to sample. Method is performed isothermally or at changing temperature, at that change of length resulted from temperature change is compensated in calculations. In order to realise the method, device is used that incorporates clamp for sample used in method, system of length measurement for registration of sample length change in time in longitudinal direction, and also computing unit. Method provides possibility to obtain much more accurate data on amount of component coming from gas atmosphere and received by parts.
EFFECT: obtainment of much more accurate data on amount of component coming from gas atmosphere and received by parts.
14 cl, 11 dwg, 1 ex
FIELD: physics, measurement.
SUBSTANCE: invention is related to measuring equipment and is intended for measurement of heights of internal ribs (corrugations) of annular articles. Device for measurement of internal ribs heights consists of assembled casing, on which the following components are installed: measuring indicator with tip, basic supports and clamp with the possibility of displacement. At that casing is equipped with guide lines, in which clamp is installed arranged in the form of wheel installed in slider, basic supports are arranged in the form of generatrices of rotary bodies with the same diameter, have common axis of rotation and are installed in the casing with provision of clearance between ends that is symmetrical to axis of indicator tip. At that axis of indicator tip, axis of basic supports rotation, axis of wheel rotation and axis of guidelines symmetry are installed in one plane, and axes of wheel and basic supports rotation are parallel to each other and perpendicular to indicator tip axis.
EFFECT: provision of possibility of measurement of height and height difference of annular article rib along the whole perimeter.
4 cl, 3 dwg
FIELD: measuring technique.
SUBSTANCE: assemble comprises several groups of members including first group with the member of minimum size and several groups (second, third and so on) of members whose sizes differ by a given value.
EFFECT: expanded functional capabilities.
FIELD: engineering of measuring equipment, namely, engineering of incrementing means for measuring linear displacements.
SUBSTANCE: photoelectric incrementing bitmap transformer has body, measuring rod, guiding rod, bitmap mating device, consisting of measuring and indicating bitmaps with emitters and photo-detectors, platform, held on measuring rod, spring. On opposite ends of guiding rod rollers of same diameter are mounted - upper one and lower one, respectively, and inside the guiding rod longitudinal, through aperture is made, wherein with a gap relatively to its axis a spring is positioned, ends of which, rounding the rollers, are symmetrically held at both sides of platform, while axis of spring in place of ends holding is parallel to axis of guiding rod, also, lower roller is positioned in the hollow made in the body.
EFFECT: engineering of photo-electric bitmap transformer with compact position of constructive elements and extended functional capabilities.
FIELD: the invention refers to textile industry particularly to means of controlling parameters of textile packing of cross reeling.
SUBSTANCE: the arrangement has a movable carriage with a hermetic cavity, filled with liquid. The cavity is connected with a pipe with a scale. In the carriage the re openings in which mobile probing rods are located. At moving the carriage one end of the mobile probing rod is leaned against the butt-end of surface of the controlling textile packing and with the other end the liquid is squeezed out of the cavity into the pipe. The volume of the squeezed liquid is inversely proportionate to the deviation of the form of the butt-end surface from stated. On each probing rod there are electrical contacts located in such a manner that in the extreme position of any probing rod a locking of its contact with the contact located on the carriage takes place. At that the ends of the probing rods are leaned against the controlling surface over the flexible tape movably fixed on the extreme probing rods.
EFFECT: the invention increases quality of production at operative controlling of parameters at the expense of receiving a generalized parameter characterizing the deviation of the form of the butt-end from stated.