Sandwich material for rescue facilities
FIELD: process engineering.
SUBSTANCE: invention relates to sandwich materials intended for making aircraft rescue hardware, particularly, to making sliding ways of rescue duckboards, mainly, to sandwich material for rescue means. It comprises textile substrate of synthetic threads with polyurethane coat with fire retardant applied thereon on face and back sides. Said textile substrate represents a polyester fabric. Said polyurethane coat comprises extra fluorine rubber. Face side includes additionally an electrically conducting layer. Said electrically conducting layer contains polyurethane, fluorine rubber and carbon filler. Carbon nanotubes are used as a carbon filler.
EFFECT: higher wear resistance and tensile strength.
5 cl, 1 tbl, 3 ex
The present invention relates to multilayer materials intended for the production of life-saving equipment in aviation, in particular, for the manufacture of track slip rescue ladders.
Known conductive fabric for products that reduce exposure to electromagnetic radiation containing interwoven basic and filling conductive and electrically insulating fibers (patent RF №2354766).
Also known tissue-based conductive fibers containing carbon particles used to track sliding emergency ladder and providing a swelling of the static electric charge (patent GB 1442711).
The disadvantage of this material is its low wear resistance, short life due to the low resistance of these materials to abrasion and bending.
Known conductive fabric for protection from electromagnetic radiation, which is a grid of metal (electrically conductive) threads (RF patent 2054064).
The disadvantage of this tissue are low corrosion resistance and resistance to abrasion and bending.
The closest in purpose and technical nature and adopted for the prototype, is a multilayer material for tracks slip rescue equipment, including a fabric base m is soy 160 g/m 2made from nylon yarns with a linear density of 210 denier and deposited on both sides of the layers of the coating based on thermosetting polyurethane elastomer containing as moderator of combustion of the flame retardant in the form of needle-shaped crystals with a length of grain ≤100 µm and bromine in an amount not less than 50%, and on the outer side of the material are coated, additionally containing aluminum powder (U.S. patent No. 5542629).
The disadvantages of this material are low tensile strength, low bond strength between the coating layers, insufficient conductivity, the complexity of the technological process of obtaining a homogeneous thermoplastic composition (polyurethane elastomer with added fire retardant product), forming layers of the coating and its application to a fabric base due to the use of needle flame retardant, which can greatly reduce the resistance of the material.
The technical object of the present invention is to provide a multilayer electrically conductive non-flammable, wear-resistant material having high tensile strength.
For the technical solution proposed multilayer material for rescue equipment, including a textile basis of synthetic fibres and deposited with the front and isanon the second side of the polyurethane coating with flame retardant, characterized in that the textile basis using polyester fabric, polyurethane coating further includes a fluoropolymer elastomer, the front side further comprises a conductive layer.
Conductive layer includes polyurethane, silicone elastomer and the carbon filler.
As a carbon filler used carbon nanotubes.
The weight ratio of textile base, front and back cover are respectively 1:(0,4-0,5):(0,3-0,4).
As a flame retardant use tetrabromodiphenylether, decabromodiphenyl oxide, antimony trioxide.
Used in the present invention the polyester fabric has compared to the cloth of nylon prototype advantage in heat resistance and relative strength: melting point polyester fibers is 260-265°C, temperature tensile strength of polyester - 248°C, loss of strength begins after 180°C; melting point polyamide fibers (including nylon) - 218-250°C, heating the polyamide fibers at temperatures above 100°C leads to the loss of their strength. In addition polyester yarns in comparison with polyamide has a higher resistance to the effects of light, water, chemicals and organic solvents, which is of great importance in the manufacture of the operation of the material.
Introduction in the coating composition of the silicone elastomer has improved such material properties as resistance, heat resistance, resistance to abrasion, weathering, to increase the service life of the coating.
The application of an additional conductive layer (coating) on the front side allows you to give to the material conductivity, necessary to ensure Oceania static electric charge from the track slip rescue ladder.
It is established that the application of the electroconductive layer (coating) of carbon nanotubes during combustion contributes not only to the formation of coke residue, but also increases the viscosity of the melt, provides its carbonation that makes it possible to solve the problem of reducing the smoke-forming ability, and exclude calipatria during combustion of the material.
In the absence of needle flame retardant mixture components in the preparation of polymeric compositions are produced by mixing roll mill or a mixer that enables you to evenly distribute the components in the mixture and provides a homogeneous composition.
Examples of implementation
On a textile base fabric polyester art. 5356 (TU 8378-134-35227510-2007) twill weave weighing 179 g/m2the direct method using acelnoolora put the wrong layer of polyurethane coatings based on rubber SKU-8A (TU 38 103209), fluoro SCF-32 (GOST 18376), flame retardant of tetrabromodiphenylether (TU 2494-409-04872688-99). Weight the wrong layer (weight of coating) amounted to 50 g/m
Next on textile basis of the direct method using a doctor knife struck the front layer of polyurethane coatings based on rubber SKU-8A, fluoro SCF-32, flame retardant of tetrabromodiphenylether. The weight of the front layer (the gain from cover) amounted to 33 g/m2.
Then on the front side of the material by a direct method using a doctor knife stabbed with a conductive layer containing rubber SKU-8A, fluoro SCF-32, and carbon nanotubes TAUNIT-M (TU 2166-002-02069289). Gain from the coverage amounted to 50 g/m2. The ratio of the textile base, front and back cover was: 1:0,5:0,3.
On a textile base fabric polyester art (TU 8378-118-35227510-2005) plain weave weighing 160 g/m2a direct method using a doctor knife stabbed the wrong layer of polyurethane coatings based on rubber SKU-8 TB (TU 38 103468), fluoro SCF-26 (GOST 18376), flame retardant antimony trioxide (TU 48-14-1). Weight the wrong layer (weight of coating) amounted to 70 g/m2.
Next on textile basis of the direct method using a doctor knife struck the front layer of polyurethane coatings based on rubber SKU-8 TB, fork is ucucha SCF-26, flame retardant antimony trioxide. The weight of the front layer (the gain from cover) amounted to 45 g/m2.
Then on the front side of the material by a direct method using a doctor knife stabbed with a conductive layer containing rubber SKU-8 TB, fluoro SCF-26 and carbon nanotubes TAUNIT-M (TU 2166-002-02069289). Gain from the coverage amounted to 35 g/m2. The ratio of the textile base, front and back cover was: 1:0,5:0,4.
On a textile base fabric polyester art (TU 8378-117-35227510-2006) twill weave weighing 176 g/m2a direct method using a doctor knife stabbed the wrong layer of polyurethane coatings based on rubber SKU-8A, fluoro GFR-264 (TU 2294-01-81-39-93-708-2004), flame retardants of decabromodiphenylethane (TU 6-47-49) and antimony trioxide (TU 48-14-1). Weight the wrong layer (weight of coating) amounted to 60 g/m2.
Next on textile basis using a doctor knife struck the front layer of polyurethane coatings based on rubber SKU-8A, fluoro-rubber GFR-264 flame retardants of decabromodiphenylethane and trioxide of antimony. The weight of the front layer (the gain from cover) amounted to 38 g/m2.
Then on the front side of the material by a direct method using a doctor knife stabbed with a conductive layer containing rubber SKU-8A, fluoro GFR-264 and carbon is haunted nanotubes TOUNIT) Gain from the coverage was 40 g/m2. The ratio of the textile base, front and back cover was: 1:0,4:0,3. Material properties are given in the table.
Test breaking load was carried out according to GOST 17316, abrasion - M 38.405-51/3-11-137-91, the value of electrical resistance - STF 1-595-19-362-2002, resistance to repeated bending - M 38405-712-90, Flammability - AP-25, app. F, part 1, smoke developed - according to GOST 24632.
|Name properties||Examples according to the invention||The placeholder|
|The breaking load, kg|
|on the basis of||220||195||247||12|
|on a duck||190||210||200||12|
|Resistance to IP is Irani, cycles||2490||1371||1505||720|
|The value of electrical resistivity (conductivity), Ohm||(4,7-4,8)*106||(1,3-1,8)·106||(4,7-7,7)·106||More than 4.0·107|
|Resistance to repeated bending, the number of cycles to failure||354150||230000||263250||150400|
|Flammability: Time residual burning, smoldering, s||1||0||1||2|
|Material classification||II Slightly smoky||II Slightly smoky||II Slightly smoky||III Medium fuming|
As can be seen from the table, the proposed material has a high breaking load (tensile strength) and exceeds the prototype 16-20 times on the basis of Yves 15-17 on a duck, the abrasion resistance of the material and resistance to repeated bending higher than about what atipa respectively 1.9-3.5 and 1.5 - 2.3 times. The material presented, unlike the prototype, has a high conductivity and can be classified as conductive materials, as this group includes materials having a value of electrical resistance of less than 107Om. The material has time residual burning, smouldering 0-1 sec. (prototype - 2 sec.), the smoke refers to the P group and the prototype - to W. Thus, the use of the proposed material for the tracks of the sliding passenger rescue ladder will increase the reliability of life-saving equipment to prevent static electricity and prolong the time of evacuation in extreme conditions.
1. Multilayer material for rescue equipment, including a textile basis of synthetic fibers deposited on front and back sides of the polyurethane coating with flame retardant, characterized in that the textile basis using polyester fabric, polyurethane coating includes a fluoropolymer elastomer, the front side further comprises a conductive layer.
2. Multilayer material for life-saving equipment according to claim 1, wherein the conductive layer includes polyurethane, silicone elastomer and the carbon filler.
3. Multilayer material for life-saving equipment according to claim 1, characterized in that, as in Narodnogo filler using carbon nanotubes.
4. Multilayer material for life-saving equipment according to claim 1, characterized in that the weight ratio of textile base, front and back cover are respectively 1:(0,4-0,5):(0,3-0,4).
5. Multilayer material for life-saving equipment according to claim 1, characterized in that as a flame retardant is used tetrabromodiphenylether, decabromodiphenyl oxide, antimony trioxide.
SUBSTANCE: in formula 1 , X denotes a negative charge which is localised on a fullerene skeleton, a chlorine atom bonded to a carbon skeleton or a hydrogen atom; the NR1R2 moiety denotes an amine residue, where R1 and R2 are hydrogen atoms or linear or branched alkyl radicals (CmH2m+1; n=1-20) that are substituted with protonated (NH3 +) or unprotonated (NH2) amine groups, or a piperazine residue of general formula 1c-1 , where R, R'1, R'2, R'3 and R'4 are hydrogen atoms or linear or branched alkyl (CmH2m+1; n=1-20) radicals, as well as residues of aliphatic alcohols -(CH2)nOH, ethers -(CH2)nOR'5, thiols -(CH2)nSH, acids -(CH2)nCOOH, esters thereof -(CH2)nCOOR'5 or amides -(CH2)nCONR'5R'6, for which n=0-20, R'5 and R'6 are hydrogen atoms or linear alkyl (CmH2m+1; n=1-20) radicals.
EFFECT: stronger or prolonged antibacterial action.
2 cl, 2 dwg, 2 tbl, 3 ex
SUBSTANCE: luminescent composite material contains a polymer base 1 made of an optically transparent polymer material and a phosphor-containing multilayer polymer film consisting of three layers: optically transparent polymer film 2; polymer composition 3, including an inorganic phosphor - cerium-doped yttrium-aluminium garnet, or cerium-doped gallium-gadolinium garnet; polymer composition 4 with dispersed semiconductor nanocrystals made of a semiconductor nucleus, first and second semiconductor layers, and emitting a fluorescent signal with fluorescence peaks in the wavelength range of 580-650 nm. Layers of the multilayer polymer film can also be arranged in the following order: polymer composition 3 containing a phosphor, polymer composition 4 with dispersed semiconductor nanocrystals, optically transparent polymer film 2. The light-emitting device contains a luminescent composite material situated away from a light source. The light source is in form of a light-emitting diode with radiation wavelength of 430-470 nm. The light-emitting devices have service life longer than 50000 h, luminous efficacy higher than 100 lm/W and correlated colour temperature of 2500-5000 K.
EFFECT: invention enables to obtain white light with colour rendering index of more than 80.
48 cl, 14 dwg
SUBSTANCE: invention relates to obtaining biocompatible magnetic nano-particles and can be applied for therapeutic purposes, in particular, for fighting cancer. Method of obtaining nano-particles, including iron oxide and silicon-containing casing and having value of specific absorption rate (SAR) 10-40 W per g of Fe with field strength 4 kA/m and frequency of alternating magnetic field 100 kHz, contains the following stages: A1) preparation of composition of at least one iron-containing compound in at least one organic solvent; B1) heating of composition to temperature in range from 50°C to temperature 50°C lower than temperature of reaction of iron-containing compound according to stage C1 for minimal period 10 minutes; C1) heating composition to temperature between 200°C and 400°C; D1) purification of obtained particles; E1) suspending purified nano-particles in water or water acid solution; F1) addition of surface-active compound to water solution, obtained according to stage E1); G1) processing of water solution according to stage F1) by ultrasound; H1) purification of water dispersion of particles, obtained according to stage G1); I1) obtaining dispersion of particles according to stage H1) in mixture of solvent from water and water-mixable solvent; J1) addition of alkoxysilane into dispersion of particles in mixture of solvent according to stage I1); and K1) purification of particles.
EFFECT: invention makes it possible to obtain biocompatible magnetic particles with high value of specific absorption rate (SAR).
42 cl, 3 dwg, 9 ex
SUBSTANCE: invention refers to medicine and may be used for tumour growth inhibition induction in experiment. For this purpose, the Pliss's lymphosarcoma cells 1 ml in the concentration of 20x106/ml proincubated for 30 min at 37°C with 100 mcl with a one-wall carbon nanotube suspension of the length of 100-200 nm functionalised by MH2-groups in the concentration of 10 mcg/ml. The tumour growth inhibition is specified as 97% for 20 days and prolonged life length is stated to increase in 1.68 times as compared to reference tumour carrier animals.
EFFECT: invention induces the tumour growth inhibition and prolongs life length of experimental animals ensured by the combined incubation of tumour cells and one-wall carbon nanotubes.
SUBSTANCE: invention relates to cosmetology, particularly a composition enriched with silver nanoparticles and a method of producing said composition. The composition is intended to replace water as the basic component for producing cosmetic products (shampoos, Balsams, masks, intimate hygiene agents, creams etc). The composition contains a dry 65% whey protein concentrate, a micellar solution of silver nanoparticles in form of an aqueous solution having concentration of 500 mg/l in amount of 0.01-0.5% and additionally water. The method of producing said composition involves heating water to temperature of 50-55°C, adding the whey protein concentrate to the heated water in portions, recirculating the obtained mixture for 15 minutes using a cam-driven pump, adding the micellar solution of silver nanoparticles to the stirred mixture and cooling the obtained mixture to 30°C.
EFFECT: invention enables to obtain cosmetic material which protects skin from inflammatory processes and ageing, controls and maintains the skin water-oil balance.
2 cl, 2 ex
FIELD: process engineering.
SUBSTANCE: invention relates to water treatment and can be used for water ozone treatment. Proposed device comprises water feed pipeline with strainer, water discharge pipeline, pipeline to feed ozone from ozone generator connected with ejector, means to discharge ozone-bearing gas, discharge pipeline, bypass pipeline with check valve, hydraulic lock, pump, filtration vessel with bed filter, drainage system level indicator, 1st, 2nd, 3rd and 4th shutoff devices, control unit connected with gages and control circuits of ozone generator, pump hydraulic lock and 1st, 2nd, 3rd and 4th shutoff devices. Note here that ozone feed pipeline is connected with ejector. Means to discharge ozone-bearing gas is composed of ozone destructor arranged atop filtration vessel and connected therewith via air shutoff valve. Flushing water discharge pipeline is connected with discharge from filtration vessel via hydraulic lock. 3rd shutoff valve is arranged in water feed line downstream of strainer to connect it with ejector and bypass line with check valve connected via 2nd shutoff valve and pump with drainage system outlet and, via 4th shutoff valve with water discharge line. 1st shutoff valve arranged in branch pipe of water feed line downstream of said strainer connects the latter with drainage system. Bed filter is composed of catalyst consisting of pelletised nano-structured based of natural green earth, thermally expanded graphite without extra binder. Sprayers are arranged at filtration vessel top part and connected with shutoff valve and pump and are automatically controlled along with ozone generator by control unit. Note here that sprayer nozzles are located: One at the center while others are arranged in concentric circles located in one plane, their number being defined by calculation.
EFFECT: higher quality of cleaning and efficient use of ozone.
SUBSTANCE: polarising film is a film of iodised polyvinyl alcohol with a mixture of carbon nanotubes and carbon nanofibres deposited on two sides by laser deposition using p-polarised radiation of a CO2 laser at wavelength 10.6 mcm, as well as orientation the deposited nanostructures in an electric field with strength of 50-200 V/m.
EFFECT: cheaper material for making polarising film, preserving transmission in the visible spectrum range and higher surface mechanical strength.
1 dwg, 1 tbl
SUBSTANCE: apparatus has a microscope attachment with an infinite optical system mounted on a support, an image recording unit, an illumination system and an image processing system, wherein the source for the illumination system is in form of a narrow-band light-emitting diode module; further, between the microscope attachment with an infinite optical system on the side of the optical output and the image recording unit there is a spectral filtration system, and between the illumination system and the image recording unit there is a signal time delay unit, the inputs of which are connected to outputs of the illumination system and the image processing system, and the outputs are connected to inputs of the illumination system, the image processing system and the image recording unit, wherein the spectral filtration system is provided with a set of variable band-pass optical filters with stepped variation of the transmission coefficient.
EFFECT: high sensitivity and information content of imaging.
3 cl, 4 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to welding. Proposed method comprises producing briquette-shape filling material. Briquettes consist of the mix of powders wherein nano-sized hardening particles make 0.1-0.4% of surfacing metal amount. Binding component represents 4-5%-water solution of carboxymethyl cellulose. Then, briquettes are dried to complete hardening. Briquette is placed onto facing surface. Then coating bead is built up by complete dissolution of filler briquette and, partially, of article metal with penetration depth of 0.1-0.5 mm. Every other briquette is placed on facing surface after dissolution of previous briquette. Now, bead after bead is built up to make two and more layers of coating.
EFFECT: higher efficiency owing to continuous surfacing without cooling.
3 cl, 1 tbl, 1 ex
SUBSTANCE: invention refers to a contrast agent for magnetic resonant and X-ray diagnostic agent for magnetic resonant tomography (MRT) and X-ray computed tomography (XRCT). The above agent contains complex ferric oxide in the concentration of 600 mg/ml, citric acid 2.4 mg/l for stabilising the particle size of complex ferric oxide within the range of 5-10 nm, sodium citrate 140 mg/ml for stabilising the contrast agent structure, polyethylene glycol in the concentration of 160 g/l and water for injections 460 mg/ml. The invention also refers to a method for preparing the above contrast agent wherein ferric salts are mixed with ammonium hydrate and citric acid added. That is followed by introducing polyethylene glycol with added water-dissolved sodium citrate while stirring thoroughly; non-dissolved sodium citrate is cooled and filtered.
EFFECT: group of the declared inventions provides more effective diagnostic study ensured by visualising with respect to relaxation time, as well as provides the lower concentration of the administered contrast agent.
3 cl, 1 dwg, 3 ex
FIELD: machine building.
SUBSTANCE: canopy control cylinder comprises a cylindrical body hingedly fixed with a hull, and a sliding hollow stem installed inside the hull and hingedly connected with the movable part of the canopy. The cylinder is equipped with a mechanism of stem uncoupling with emergency drop of the canopy and a pusher with a piston placed in the stem cavity. The uncoupling mechanism comprises coaxially installed a rod, a collet element, the first and second springs, a case and an eye. The pusher is installed as capable of contact with the rod. The first spring rests against the ledge of the pusher and a guide part of the collect element, tabs of which enter inside the ledge. Ledges of the tabs are placed in the case bore installed in the stem cavity. The expanded part of the rod is pressed to the tabs by the second spring placed between the expanded part of the rod and the ledge on the inner surface of the case. The rod stretches via the second spring beyond the ledge on the inner surface of the case and has a thread at the end, onto which a nut is screwed. The case is connected with an eye by a hole for connection with the movable part of the canopy.
EFFECT: elimination of powder gases breakthrough into the area of armchair flight in case of emergency drop of a canopy.
8 cl, 7 dwg
SUBSTANCE: invention relates to rescue equipment. Aircraft rescue system consists of rescue module, four rockets attached thereto, microprocessor to control rocket power output and seats for three parachutes. Said parachutes in separation of the module from aircraft in emergency and failure of one or several rockets can be ejected from their seats and released.
EFFECT: higher reliability.
4 cl, 4 dwg
SUBSTANCE: invention relates to aviation, particularly to aircraft emergency survival equipment. Aircraft comprises fuselage, wings, engines. Fuselage skin in the upper part consists of stacked together plates of 0.03-0.05 mm thickness, interconnected by elastic material. Fabric covering passenger seats is attached by its one end to lower skin plate and by its other end - to rigging lines. In emergency situation, plates and fabric are pushed out and form parachute.
EFFECT: higher safety of aircraft.
SUBSTANCE: aircraft 10 comprises fuselage 12 with top piloted section 10a and bottom detachable section 10B jointed to top section 10A in normal flight. Top wing 14A is jointed with fuselage top piloted section 10A while bottom wing 14B is jointed with bottom detachable fuselage section 10B. Split fasteners serves to joint bottom detachable section 10B with top section 10A. Split fasteners may be actuated in flight to allow detachment of top piloted section 10A from bottom detachable section 10B. Top piloted section 10A may perform controlled flight without bottom detachable section 10B.
EFFECT: lower weight and reduced production costs.
39 cl, 138 dwg
SUBSTANCE: invention relates to the field of devices for emergency rescue of air passengers. The device for emergency passengers rescue located in fuselage consists of facilities for separation of one part of fuselage from the other part, evacuation facilities and parachutes. The upper part of fuselage is separated from the lower part by means of parabrake. Upper and lower parts of fuselage are connected by disengageable hinges. The top element of each hinge by its cylindrical part enters the middle cut of bottom element cylindrical part and is fixed by pins secured on ring cable. Bottom elements of hinges are provided with cuts for cable passing for their common unlocking. In the front part of fuselage near cockpit, the ring cable is mounted on the bearing arc of command device power drive. Passenger seats consist of rigid parts fixed on passenger cab deck of bottom base fuselage part, and detachable cushioned seats installed on the rigid parts. The cushioned seats are executed in the form of boxes made of soft materials the front open parts of which are covered by safety screens.
EFFECT: higher flight safety.
2 cl, 8 dwg
SUBSTANCE: emergency exit opening system consists of a door and pneumatic cylinder connected with the door by means of a rod. The pneumatic cylinder is connected with one source of compressed air, as minimum, by pipeline through release mechanism. The release mechanism controls include a handle. The release mechanism contains one rocking mechanism coupled with the said handle and, as minimum, one pipeline cock, connected with the main rocking mechanism and retained in closed position of spring element. As minimum, there is one pyro-pusher in the release mechanism. The said pyro-pusher is installed so that rocking mechanism position can be changed when pusher is actuated. In addition, release mechanism controls include control element installed in the cabin and connected with the said pyro-pusher. Pneumatic cylinder is provided with rod fixing element in maximum door opening position.
EFFECT: increased reliability of door opening during flight opposite to flow and further door fixing.
8 cl, 2 dwg