Procedure for production of heat sensing devices on base of polymers

FIELD: textile, paper, polymer fibre.

SUBSTANCE: invention refers to production of heat sensing devices on base of polymers and can be implemented for control over temperature in various industrial processes and in household use. Here is disclosed the procedure for production of heat sensing devices on base of polymers by means of polymer treatment with solution of dye; further polymer is dried at temperature below temperature of glass transition. As polymer there is used a polymer item of elongated shape, such as film, fibre, band, pipe, or rod, fabricated of plasticised or non-plasticised amorphous or amorphous-crystallised polymer drawn into adsorption active medium at temperature below temperature of polymer glass transition. As dye there is used not thermo-chromic dye chosen from a group including Rodamin 6 ZH, Methyl green and Methylene blue; also polymer is treated with dye solution at temperature below temperature of polymer glass forming.

EFFECT: facilitating simplified procedure for production of heat-sensing devices on base of polymers, expands range of implementation, also produced heat-sensing devices with irreversible mode of operation.

6 cl, 2 ex

 

The invention relates to the field of sensors based on polymers and can be used for temperature control in various industrial processes and everyday life.

A method of obtaining temperature sensors based on polymers by introducing microspheres crystal polystyrene (PS) poly-N-izopropilakrilamid with the subsequent receipt of the above mixture films (Dps)that changes color when heated due to a change in the diffraction of light in the visible region of the spectrum (Weissman J.M., Sunkara H.B., Tse A.S., S.A. Asher Thermally switchable periodicities and diffraction from mesoscopically ordered materials. Science 1996, v. 274, N 5289, p.959-963).

The disadvantage of this method is the narrow scope of its application is only for a single polymer poly-N-isopropylacrylamide and the only concrete additives spherical particles of crystalline PS. In addition, this method makes it possible to obtain only reversible sensor that does not allow registration of temporary temperature increase in the absence of an observer.

A method of obtaining temperature sensors based on polymers by polymerization of 3-domaintype with the formation of a polymer having a reversible thermochromic properties (Wang Y., N. Archambault, A. Marold, Weng L., B.L. Lucht, W.B. Euler Observation of Two-Step Thermochromism in Poly (3-docosylthiophene): DSC and Reflection Spectroscopy. Macromolecules 2004, v. 37, p.5415-5422).

The disadvantages of this method which are of sufficient complexity and narrow its scope only for a single polymer. In addition, this method makes it possible to obtain only reversible sensor that does not allow registration of temporary temperature increase in the absence of an observer.

Closest to the claimed is a method of obtaining temperature sensors based on polymers by processing the polymer polyvinyl alcohol (PVA) solution of one of the dyes crisologo red or 2,6-diphenyl-4-(2,4,6-triphenylpyridinium)phenolate, with consequent impacts on the polymer, comprising introducing into the reaction system linking agent Na2B4O10x10H2O (Seeboth, A., J. Kriwanek, Vetter R. The first example of thermochromist of dyes in transparent polymer gel networks. J. Mater. Chem. 1999, v. 9, p.2277-2278) prototype.

The disadvantage of this method is its sufficient complexity, the narrow scope of the method only for the specific polymer PVA and one of the two used for these purposes dyes and thermal reversibility of this sensor that does not allow registration of temporary temperature increase in the absence of an observer.

An object of the invention is to simplify the known method of obtaining temperature sensors based on polymers, extending the scope of its application by spreading at different initial polymers and various dyes used, as well as the development of the way the floor is ing sensors, action which is irreversible.

This technical result is achieved by the fact that in the known method of obtaining temperature sensors based on polymers by treatment of the polymer with the dye solution, with consequent impacts on the polymer in the polymer used as the polymer product of an elongated shape, made of plasticized or unplasticized, amorphous or amorphous-crystalline polymer, stretched in an adsorption-active medium (AAS) at a temperature below the glass transition temperature (Tgof the polymer, as the dye used heterochrony dye, processing of the polymer solution of the dye is carried out at temperatures below Tgpolymer, and the effects include drying of the polymer at temperatures below Tgthe polymer. The polymer elongated shape can be used Dps, fibers, tapes, tubes and rods.

This method is based on the phenomenon of crazing of polymers elongated shape with their hood in specially selected AAS, leading to the formation of porous structures in polymers.

In the proposed method as AAS can be used various organic compounds such as alcohols, ketones, hydrocarbons and so on, as well as binary and multicomponent solutions, including aqueous solutions. As AAS can also b is to be used organic or aqueous solutions of ionic or nonionic surfactants, the concentration of which can be varied within wide limits. In addition, as AAS you can use a pair of liquid compounds having the properties of adsorption activity.

We have found that the polymeric product is elongated, initially at a temperature below Tgpolymer subjected to extraction in AAS, then at temperatures below Tgpolymer solution treated heterochromia dye and dried at temperatures below Tgpolymer acquires the ability to change the color in those areas of the product, which was subjected to heat treatment at temperatures below Tgpolymer, i.e. the polymer may function as a sensor. In these conditions, some dyes are also observed a sharp increase in fluorescence intensity colored polymer. This phenomenon can also be used as the working principle of sensors.

When implementing this method can be used as plasticized polymers with different content of the plasticizer (which allows you to vary Tgpolymer)and unplasticized polymers. The polymers may be amorphous and amorphous-crystalline. As such polymers can be used, for example, polyvinyl chloride (PVC), polymethylmethacrylate, PS, etc. Polymers mo the ut to be undirected, partially oriented or fully oriented. In the latter case, extraction of the polymer, for example Square or tape should be in a direction not coinciding with the direction of a preliminary orientation. Can be used as homopolymers and copolymers, with srednevekovoy molecular mass (Mwand the thickness of the polymer can be varied within wide limits, for example from 10 to several thousand kilodaltons and from 5 to 1000 microns (μm), respectively.

Extraction of the polymer can be carried out in a wide temperature range, for example from freezing temperature used AAS before boiling point in the case, if the temperature is below Tgthe polymer. Extraction of the polymer can be carried out with different speeds, for example from 1×10-2up to 1×105mm/min Degree of extraction can be varied within wide limits, for example from 2% to rupture of the polymer. Geometrical dimensions of the elongated object can be anything. The hood can be done using manual stretching device, and in continuous mode.

In the proposed method, it is possible to use various soluble heterochromia dyes, such as rhodamine 6g, methylene blue, methyl green, etc. processing of the extruded polymer, the dye solution can be implemented in a wide tempo of the temperature interval, for example from the freezing temperature of the solvent to a temperature below Tgthe polymer. Initial concentration of dye in the solution may vary within wide limits. The processing of the extruded polymer solution heterochromia dye may also vary within wide limits. It is desirable previously extruded polar polymers treated with the dye solution in a nonpolar solvent, as previously elongated non-polar polymers treated with the dye solution in the polar solvent.

Drying of the polymer after extraction can be conducted in the free state, and in isometric conditions at atmospheric pressure and under vacuum in a wide temperature range, for example from the freezing temperature of the solvent to a temperature below Tgthe polymer. Drying of the polymer can be held during a different time, depending on the process temperature, the boiling point of the AAS, the chemical nature of the polymer and the thickness of the polymer.

The response time of the proposed sensors for temperature treatment can vary widely from a few seconds to several minutes and depends on the temperature effects on the sensor exceeds Tgthe polymer. Local thermal effects on the proposed sensor which allows you to register your place, subjected to heating at a temperature greater than or equal to Tgthe polymer.

It should be noted that the hood polymer injection, treatment of the polymer with the dye solution and drying of the polymer may be carried out at temperatures below Tgthe polymer. Conducting at least one of these stages at higher temperatures is not possible to obtain polymers having the property of temperature-sensitive element.

For the convenience of practical use of the proposed sensor can be subjected to additional heat treatment at temperatures below Tgpolymer, for example, by touching the surface of the sensor heated object, which will result in a color change on the part of the sensor. In this case, this site will serve as a reference color for practical use of the sensor.

When using the proposed sensors polymer can be either in a free state, and in isometric conditions, and the color change in the polymer is irreversible and may persist indefinitely. After heat treatment of the polymer, its mechanical characteristics are not impaired. With repeated thermal processing changed color plots polymer further color change does not occur, that is, the action of the sensor is disposable.

The advantages of the proposed CSP is both illustrated by the following examples.

Example 1

Partially oriented Square size h mm and a thickness of 180 μm amorphous-crystalline PVC with a degree of crystallinity 7% with Mw=25 kilodaltons and Tg74°C are secured in the clamps manual stretching devices, are then pulled out at room temperature for 15% with a speed of 15 mm/min in AAS, which use isopropanol. Elongated Square handle in isometric conditions at room temperature with 0.3%aqueous solution heterochromia dye rhodamine 6g for 30 min, then PL is dried in isometric conditions at room temperature for 30 minutes Get PL red-crimson color. Thermal processing of PL in isometric conditions is carried out for 10 min at 90°C. Receives a yellow-orange Square. Thus, the heat treatment is changing color Square with red-crimson to yellow-orange, which proves the possibility of using the obtained PL as the temperature sensor. In addition, PL see an increase in the fluorescence intensity of 40 times, that can also be used for operating principle of the sensor. The color change is saved on the Square for a long time (years) and limited only by photostatically dye.

Example 2

Tape size 200×10 mm with a thickness of 100 μm amorphous PS with Mw200 kilodaltons and T g90°C fixed in the clamps manual stretching devices, are then pulled out at a temperature of 40°C 20% at a speed of 2 mm/min in AAS, which use ethanol. An elongated tape removed from the clamps of the tensile device is treated at room temperature with 0.1%solution heterochromia dye methyl green in ethanol for 20 min, then dried for 20 min at 40°C at a residual pressure of 10-1Torr. Get colored ribbon light blue color. Thermal processing tape in a free state is carried out at 100°C for 10 minutes While watching the changing colors of the ribbon with light blue to dark blue, which proves the possibility of using the obtained tape as the temperature sensor. The color change is saved on tape for a long time (years) and limited only by photostatically dye.

1. The method of receiving sensors, based polymers by treatment of the polymer with the dye solution, with consequent impacts on the polymer, characterized in that the polymer used as the polymer product of an elongated shape, made of plasticized or unplasticized, amorphous or amorphous-crystalline polymer, stretched in an adsorption-active medium of a number of alcohols at a temperature below temperaturestable polymer, followed by treatment of the aqueous or alcoholic solution heterochromia dye selected from the group comprising rhodamine 6g, methyl green and methylene blue at a temperature below the glass transition temperature of the polymer and drying the polymer at a temperature below the glass transition temperature of the polymer.

2. The method according to claim 1, characterized in that the quality of the polymer product of an elongated shape use film.

3. The method according to claim 1, characterized in that the polymer product is elongated using fiber.

4. The method according to claim 1, characterized in that the polymer product is elongated in shape, use the tape.

5. The method according to claim 1, characterized in that the quality of the polymer product of an elongated shape is used up.

6. The method according to claim 1, characterized in that the polymer product is elongated in shape, use the rod.



 

Same patents:

FIELD: physics.

SUBSTANCE: described is a method of recording information on polymers through thermal action on a polymer, involving local thermal processing of a polymer at temperature below its glass transition point. The polymer used is a polymer object with a prolate form (film, fibre, tape, pipe, rod), made from plasticised or unplasticised, amorphous or amorphous-crystalline polymer, initially subjected to stretching in a adsorption-active medium from alcohols at temperature below glass transition point of the polymer, and then treated with a solution of non-thermochromic dye selected from a group comprising Rhodamine 6G, methyl green and methylene blue at temperature below glass transition point of the polymer and drying at temperature below glass transition point of the polymer.

EFFECT: invention simplifies the method of recording information on polymers.

6 cl, 2 ex

The invention relates to the creation of materials for optical information recording

FIELD: physics.

SUBSTANCE: described is a method of recording information on polymers through thermal action on a polymer, involving local thermal processing of a polymer at temperature below its glass transition point. The polymer used is a polymer object with a prolate form (film, fibre, tape, pipe, rod), made from plasticised or unplasticised, amorphous or amorphous-crystalline polymer, initially subjected to stretching in a adsorption-active medium from alcohols at temperature below glass transition point of the polymer, and then treated with a solution of non-thermochromic dye selected from a group comprising Rhodamine 6G, methyl green and methylene blue at temperature below glass transition point of the polymer and drying at temperature below glass transition point of the polymer.

EFFECT: invention simplifies the method of recording information on polymers.

6 cl, 2 ex

FIELD: textiles, paper.

SUBSTANCE: invention is related to the field of polymer materials dyeing technology with application of waves of various physical nature. Device is described for continuous dyeing of polymer materials, including spray-apparatuses for dyeing and reservoirs of ultrasonic, electromagnet-acoustic and hydroacoustic activation of waves, excessive static pressure and intense hydrodynamic field.

EFFECT: proposed device provides for reduction of dyeing composition consumption, reduced time of dyeing, fixation of dye on material and drying, and also efficient treatment of drainage water from suspended matter and colloid particles by a relatively simple method and possibility of its reuse in production.

1 cl, 7 dwg, 1 ex

FIELD: textiles, paper.

SUBSTANCE: invention is related to the field of dyeing-finishing production, namely to steam-phase dyeing of textile materials or natural suede. Proposed method of dyeing includes generation of unsaturated vapors of dye in process of dye evaporation in combination with thermoplastic polymer with their mass ratio of 1:3-1:5 at the temperature of 250-600°C and pressure of 5-10-4 - 5-10-7 mm of mercury column and simultaneous dyeing in mixture of generated dye vapors and thermoplastic polymer.

EFFECT: method makes it possible to improve extent of dye fixation on material with preservation of material physical and mechanical properties due to elimination of undesirable structural changes of polymer material in process of steam-phase dyeing.

1 cl, 2 tbl, 23 ex

FIELD: dye-finishing production.

SUBSTANCE: the present innovation deals with delivering dyeing composition heated up to about 35-40°C into the tank with ultrasound emitter at frequency being 104-106 Hz followed by the impact upon it for the period of about 1-5 min; guiding it into the tank for dyeing supplied with ultrasound emitter at frequency ranged 104-106 Hz with a substrate located in it, which was pre-subjected for ultrasound impact in this tank in the mentioned frequency range; availability of a substrate in the mentioned activated dyeing composition at excessive pressure of about 0.5-1.0 atm for the period of about 3-15 min followed by washing with water subjected to ultrasound impact in the tank for water activation in frequencies ranged 104-106 Hz followed by drying. Waster water should be guided into the tank for water purification supplied with ultrasound emitter at frequency being 104-106 Hz at excessive pressure ranged 2.5-5.0 atm with subsequent return of the purified water into the cycle of dyeing process. The innovation provides intensification of dyeing process and shortened expenses of dyestuff and supplementary substances.

EFFECT: higher efficiency.

5 dwg, 1 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of modifying polymer materials and can be used in technology of finishing polymer materials. Invention provides process and composition for dyeing and texturing polymer surface, which resides in that polymer surface, preferably based on polyethylene-polyamine-hardened dian epoxide resin, is coated with composition of exothermic mixture of organic compound powders containing bensenesulfonic acid chloroamide sodium salt trihydrate (chloramine B) and 8-hydroxyquinoline taken in molar ratio (0.25-3.0):1, respectively. Mixture is then locally initiated and components react in a mode of wave self-propagating high-temperature synthesis.

EFFECT: reduced polymer surface modification time, avoided use of organic solvents, simplified equipment, and enabled obtaining homogenous or spectrum-gradient intensive color, resistant to light and atmospheric effects.

5 cl, 2 tbl, 8 ex

FIELD: production of painted optically transparent polymeric films used in microelectronics, quantum electronics and opto-electronics.

SUBSTANCE: method for adding dye to polymers comprises steps of drawing polymer in adsorption-active liquid medium containing dissolved dye; further drying of polymer and annealing it; using as polymer non-oriented polymeric film of amorphous polymer; annealing polymer in temperature range beginning from temperature of polymer vitrifying till temperature of chemical decomposition of polymer with dye. Polymer is dried and annealed without holding it in tensioned state in direction of drawing.

EFFECT: possibility of realizing simplified process for producing optically transparent painted polymeric films.

4 ex

FIELD: physical method for leather staining.

SUBSTANCE: claimed simplified method includes spraying of dyeing composition, containing (mass %): diphenylamine 0.3-2.0; tetrabromomethan 5.0-10.0; α-naphthol 0.01-0.03; and balance: methyl methacrylate-based varnish, onto the leather face, followed by ultraviolet exposure with wave-length of 300-400 nm at 25-300C for 0.5-1.0 min. Ferrocene and/or indole may be added in dyeing composition to complete color variety.

EFFECT: leather with improved hydrophobicity and physicochemical resistance.

2 cl, 2 tbl, 3 ex

The invention relates to dyeing and finishing production of the textile industry and can be used for dyeing fibers

The invention relates to a process of dyeing containing cellulose textile materials, in particular to a method for producing dyed containing cellulose textile materials

FIELD: physical method for leather staining.

SUBSTANCE: claimed simplified method includes spraying of dyeing composition, containing (mass %): diphenylamine 0.3-2.0; tetrabromomethan 5.0-10.0; α-naphthol 0.01-0.03; and balance: methyl methacrylate-based varnish, onto the leather face, followed by ultraviolet exposure with wave-length of 300-400 nm at 25-300C for 0.5-1.0 min. Ferrocene and/or indole may be added in dyeing composition to complete color variety.

EFFECT: leather with improved hydrophobicity and physicochemical resistance.

2 cl, 2 tbl, 3 ex

FIELD: production of painted optically transparent polymeric films used in microelectronics, quantum electronics and opto-electronics.

SUBSTANCE: method for adding dye to polymers comprises steps of drawing polymer in adsorption-active liquid medium containing dissolved dye; further drying of polymer and annealing it; using as polymer non-oriented polymeric film of amorphous polymer; annealing polymer in temperature range beginning from temperature of polymer vitrifying till temperature of chemical decomposition of polymer with dye. Polymer is dried and annealed without holding it in tensioned state in direction of drawing.

EFFECT: possibility of realizing simplified process for producing optically transparent painted polymeric films.

4 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of modifying polymer materials and can be used in technology of finishing polymer materials. Invention provides process and composition for dyeing and texturing polymer surface, which resides in that polymer surface, preferably based on polyethylene-polyamine-hardened dian epoxide resin, is coated with composition of exothermic mixture of organic compound powders containing bensenesulfonic acid chloroamide sodium salt trihydrate (chloramine B) and 8-hydroxyquinoline taken in molar ratio (0.25-3.0):1, respectively. Mixture is then locally initiated and components react in a mode of wave self-propagating high-temperature synthesis.

EFFECT: reduced polymer surface modification time, avoided use of organic solvents, simplified equipment, and enabled obtaining homogenous or spectrum-gradient intensive color, resistant to light and atmospheric effects.

5 cl, 2 tbl, 8 ex

FIELD: dye-finishing production.

SUBSTANCE: the present innovation deals with delivering dyeing composition heated up to about 35-40°C into the tank with ultrasound emitter at frequency being 104-106 Hz followed by the impact upon it for the period of about 1-5 min; guiding it into the tank for dyeing supplied with ultrasound emitter at frequency ranged 104-106 Hz with a substrate located in it, which was pre-subjected for ultrasound impact in this tank in the mentioned frequency range; availability of a substrate in the mentioned activated dyeing composition at excessive pressure of about 0.5-1.0 atm for the period of about 3-15 min followed by washing with water subjected to ultrasound impact in the tank for water activation in frequencies ranged 104-106 Hz followed by drying. Waster water should be guided into the tank for water purification supplied with ultrasound emitter at frequency being 104-106 Hz at excessive pressure ranged 2.5-5.0 atm with subsequent return of the purified water into the cycle of dyeing process. The innovation provides intensification of dyeing process and shortened expenses of dyestuff and supplementary substances.

EFFECT: higher efficiency.

5 dwg, 1 ex

FIELD: textiles, paper.

SUBSTANCE: invention is related to the field of dyeing-finishing production, namely to steam-phase dyeing of textile materials or natural suede. Proposed method of dyeing includes generation of unsaturated vapors of dye in process of dye evaporation in combination with thermoplastic polymer with their mass ratio of 1:3-1:5 at the temperature of 250-600°C and pressure of 5-10-4 - 5-10-7 mm of mercury column and simultaneous dyeing in mixture of generated dye vapors and thermoplastic polymer.

EFFECT: method makes it possible to improve extent of dye fixation on material with preservation of material physical and mechanical properties due to elimination of undesirable structural changes of polymer material in process of steam-phase dyeing.

1 cl, 2 tbl, 23 ex

FIELD: textiles, paper.

SUBSTANCE: invention is related to the field of polymer materials dyeing technology with application of waves of various physical nature. Device is described for continuous dyeing of polymer materials, including spray-apparatuses for dyeing and reservoirs of ultrasonic, electromagnet-acoustic and hydroacoustic activation of waves, excessive static pressure and intense hydrodynamic field.

EFFECT: proposed device provides for reduction of dyeing composition consumption, reduced time of dyeing, fixation of dye on material and drying, and also efficient treatment of drainage water from suspended matter and colloid particles by a relatively simple method and possibility of its reuse in production.

1 cl, 7 dwg, 1 ex

FIELD: physics.

SUBSTANCE: described is a method of recording information on polymers through thermal action on a polymer, involving local thermal processing of a polymer at temperature below its glass transition point. The polymer used is a polymer object with a prolate form (film, fibre, tape, pipe, rod), made from plasticised or unplasticised, amorphous or amorphous-crystalline polymer, initially subjected to stretching in a adsorption-active medium from alcohols at temperature below glass transition point of the polymer, and then treated with a solution of non-thermochromic dye selected from a group comprising Rhodamine 6G, methyl green and methylene blue at temperature below glass transition point of the polymer and drying at temperature below glass transition point of the polymer.

EFFECT: invention simplifies the method of recording information on polymers.

6 cl, 2 ex

FIELD: textile, paper, polymer fibre.

SUBSTANCE: invention refers to production of heat sensing devices on base of polymers and can be implemented for control over temperature in various industrial processes and in household use. Here is disclosed the procedure for production of heat sensing devices on base of polymers by means of polymer treatment with solution of dye; further polymer is dried at temperature below temperature of glass transition. As polymer there is used a polymer item of elongated shape, such as film, fibre, band, pipe, or rod, fabricated of plasticised or non-plasticised amorphous or amorphous-crystallised polymer drawn into adsorption active medium at temperature below temperature of polymer glass transition. As dye there is used not thermo-chromic dye chosen from a group including Rodamin 6 ZH, Methyl green and Methylene blue; also polymer is treated with dye solution at temperature below temperature of polymer glass forming.

EFFECT: facilitating simplified procedure for production of heat-sensing devices on base of polymers, expands range of implementation, also produced heat-sensing devices with irreversible mode of operation.

6 cl, 2 ex

Up!