CN111139656A - High-strength degradable TPU textile composite material and preparation method thereof - Google Patents
High-strength degradable TPU textile composite material and preparation method thereof Download PDFInfo
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- CN111139656A CN111139656A CN201911231863.9A CN201911231863A CN111139656A CN 111139656 A CN111139656 A CN 111139656A CN 201911231863 A CN201911231863 A CN 201911231863A CN 111139656 A CN111139656 A CN 111139656A
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000004753 textile Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000004744 fabric Substances 0.000 claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 25
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003822 epoxy resin Substances 0.000 claims abstract description 23
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 23
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 8
- 238000007634 remodeling Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000004049 embossing Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000009832 plasma treatment Methods 0.000 abstract description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 101
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 101
- 230000015556 catabolic process Effects 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009264 composting Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004970 Chain extender Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010096 film blowing Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/001—Treatment with visible light, infrared or ultraviolet, X-rays
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1607—Degradability
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/10—Clothing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/266—Ships
Abstract
The invention discloses a high-strength degradable TPU textile composite material and a preparation method thereof, which adopts TPU particles, triethanolamine and epoxy resin as raw materials to prepare a modified TPU material, and effectively improves the performance of the traditional TPU material. The production process of combining the base fabric with the modified TPU material after the base fabric is subjected to plasma treatment by air containing a small amount of ozone, effectively improves the mechanical property of the composite fabric, and avoids the undesirable phenomena of curling, deformation and the like generated after the TPU composite fabric is stored for a long time. Meanwhile, the sprayed fabric is treated by ultraviolet irradiation, so that the bonding strength among all layers of the TPU textile composite material is improved, and the durability of the product is improved. The prepared high-strength degradable TPU textile composite material has good biodegradability and mechanical property, and is suitable for manufacturing inflatable life jackets, inflatable boats, massage airbags and the like.
Description
Technical Field
The invention relates to the technical field of textile materials, in particular to a high-strength degradable TPU textile composite material and a preparation method thereof.
Background
By degradable textile material is meant a textile material that, under defined environmental conditions, over a period of time and including one or more steps, results in a significant change in the chemical structure of the material with the loss of certain properties (such as integrity, molecular mass, structure or mechanical strength) and/or breakage. The chemical meaning of degradation means that the number of carbon atoms in the molecules of the organic compound is reduced, the molecular weight is reduced, and the macromolecules of the macromolecular compound are decomposed into smaller molecules.
TPU (thermoplastic polyurethanes), thermoplastic polyurethanes, are linear block copolymers composed of soft segments of oligomeric polyols and hard segments of diisocyanate-chain extenders. The TPU can be made into a film by casting, film blowing, rolling or coating, and has the superior characteristics of good elasticity, toughness, wear resistance, good cold resistance, environmental protection and no toxicity. The TPU composite fabric is a novel material formed by bonding and laminating one or more layers of textile materials, non-woven materials and other functional materials. There are two methods for preparing the TPU composite fabric, one is called post-sticking: firstly preparing a TPU film, then gluing and fitting the TPU film with a fabric, and compounding the TPU film and the fabric in an online manner: coating glue or not on the fabric, and directly casting TPU on the fabric to prepare TPU composite fabric or sandwich mesh fabric. The traditional TPU composite fabric is prepared by directly sticking a TPU film on a common fabric through an adhesive, the method is simple and efficient, but has a difference with a high-strength textile material in mechanical property, and meanwhile, the traditional TPU film can be degraded in the environment for a long time and is not in accordance with the current trend of green textile and ecological textile.
Disclosure of Invention
Based on the problem that the mechanical property and the degradation property of the current TPU composite material cannot meet the requirements of consumers, the invention provides a high-strength degradable TPU textile composite material and a preparation method thereof.
The high-strength degradable TPU textile composite material is prepared from a base fabric and a modified TPU material sprayed on the surface of the base fabric, wherein the raw materials of the modified TPU material comprise TPU particles, triethanolamine and epoxy resin.
The modified TPU material is prepared from the raw materials of TPU particles, triethanolamine and epoxy resin, so that the performance of the traditional TPU material is effectively improved, and although the materials are not firstly applied to textile materials, the materials are combined according to a certain proportion and reacted under certain conditions to prepare the modified TPU material, so that the improvement of the degradation performance of the TPU material is brought, and the technical effect of the invention is realized.
Further, the preparation method of the modified TPU material comprises the following steps:
(1) mixing TPU particles, triethanolamine and epoxy resin, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500-1600 rpm, raising the temperature in the stirring reaction kettle to 130-135 ℃, and fully reacting for 8-10 minutes to obtain a modified TPU mixture;
(2) and putting the modified TPU mixture into a plastic refining machine, plasticizing at 145-150 ℃, and then heating the plasticized TPU mixture to 165-175 ℃ for high-temperature remodeling to obtain the modified TPU material.
Further, the mass ratio of the TPU particles, the triethanolamine and the epoxy resin is 25:3: 2.
The invention also provides a preparation method of the high-strength degradable TPU textile composite material, which comprises the following steps:
(1) mixing TPU particles, triethanolamine and epoxy resin, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500-1600 rpm, raising the temperature in the stirring reaction kettle to 130-135 ℃, and fully reacting for 8-10 minutes to obtain a modified TPU mixture;
(2) putting the modified TPU mixture into a plastic refining machine, plasticizing at 145-150 ℃, and then heating the plasticized TPU mixture to 165-175 ℃ for high-temperature remodeling to obtain a modified TPU material;
(3) placing the base fabric in a plasma processor, introducing air containing a small amount of ozone, keeping the air pressure at 150Pa, processing for 15-20 minutes under the power of 130-150W, then adjusting the air pressure to 50Pa, processing for 6-8 minutes under the power of 220-230W, then increasing the surface temperature of the base fabric to 155-160 ℃ by adopting an infrared heating mode, and uniformly spraying the modified TPU material in the step (2) on the surface of the base fabric in a spraying mode;
(4) cooling the sprayed fabric to room temperature, and irradiating the fabric by using ultraviolet rays, wherein the wavelength of the ultraviolet rays is 330-350 nm, the irradiation degree is 2.2-2.4W/square meter, and the irradiation time is 150-200 minutes;
(5) and embossing, washing, drying and coiling the fabric subjected to ultraviolet irradiation treatment to obtain the high-strength degradable TPU textile composite material.
The production process of combining the base fabric with the modified TPU material after the base fabric is subjected to plasma treatment by air containing a small amount of ozone, effectively improves the mechanical property of the composite fabric, and avoids the undesirable phenomena of curling, deformation and the like generated after the TPU composite fabric is stored for a long time. Meanwhile, the sprayed fabric is treated by ultraviolet irradiation, so that the bonding strength among all layers of the TPU textile composite material is improved, and the durability of the product is improved.
Further, the mass ratio of the TPU particles, the triethanolamine and the epoxy resin is 25:3: 2.
The high-strength degradable TPU textile composite material prepared by the preparation method has good degradation performance, is durable in use, and is suitable for manufacturing inflatable life jackets, inflatable boats, massage airbags and the like.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The starting materials and reagents used in the following examples are all commercially available common starting materials and reagents.
The high-strength degradable TPU textile composite material is prepared from a base fabric and a modified TPU material sprayed on the surface of the base fabric, wherein the raw materials of the modified TPU material comprise TPU particles, triethanolamine and epoxy resin.
Compared with the common TPU material, the modified TPU material has the advantages that the molecular structure of the modified TPU material is changed, because the triethanolamine and the epoxy resin are reacted with oligomer polyol and isocyanate in the TPU particles on the molecular layer under certain reaction conditions, and the linear block structure of the conventional TPU is changed. More specifically, the basic structure that the soft segment part and the hard segment part of the TPU molecular chain alternately exist is kept, so that the TPU molecular chain is more easily decomposed by microorganisms in the environment, and the degradation performance of the TPU film is effectively improved.
In a preferred embodiment, the process for preparing the modified TPU material comprises the steps of:
(1) mixing TPU particles, triethanolamine and epoxy resin, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500-1600 rpm, raising the temperature in the stirring reaction kettle to 130-135 ℃, and fully reacting for 8-10 minutes to obtain a modified TPU mixture;
(2) and putting the modified TPU mixture into a plastic refining machine, plasticizing at 145-150 ℃, and then heating the plasticized TPU mixture to 165-175 ℃ for high-temperature remodeling to obtain the modified TPU material.
In a preferred embodiment, the mass ratio of the TPU particles, triethanolamine, and epoxy resin is 25:3: 2.
A preparation method of a high-strength degradable TPU textile composite material comprises the following steps:
(1) mixing TPU particles, triethanolamine and epoxy resin, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500-1600 rpm, raising the temperature in the stirring reaction kettle to 130-135 ℃, and fully reacting for 8-10 minutes to obtain a modified TPU mixture;
(2) putting the modified TPU mixture into a plastic refining machine, plasticizing at 145-150 ℃, and then heating the plasticized TPU mixture to 165-175 ℃ for high-temperature remodeling to obtain a modified TPU material;
(3) placing the base fabric in a plasma processor, introducing air containing a small amount of ozone, keeping the air pressure at 150Pa, processing for 15-20 minutes under the power of 130-150W, then adjusting the air pressure to 50Pa, processing for 6-8 minutes under the power of 220-230W, then increasing the surface temperature of the base fabric to 155-160 ℃ by adopting an infrared heating mode, and uniformly spraying the modified TPU material in the step (2) on the surface of the base fabric in a spraying mode;
(4) cooling the sprayed fabric to room temperature, and irradiating the fabric by using ultraviolet rays, wherein the wavelength of the ultraviolet rays is 330-350 nm, the irradiation degree is 2.2-2.4W/square meter, and the irradiation time is 150-200 minutes;
(5) and embossing, washing, drying and coiling the fabric subjected to ultraviolet irradiation treatment to obtain the high-strength degradable TPU textile composite material.
The preparation method adopts a production process that the base fabric is subjected to plasma treatment by air containing a small amount of ozone and then is sprayed and combined with the modified TPU material, so that the mechanical property of the composite fabric is effectively improved, and the adverse phenomena of curling, deformation and the like generated after the TPU composite fabric is stored for a long time are avoided. Meanwhile, the sprayed fabric is treated by ultraviolet irradiation, so that the bonding strength among all layers of the TPU textile composite material is improved, and the durability of the product is improved.
In a preferred embodiment, the mass ratio of the TPU particles, triethanolamine and epoxy resin in step (1) is 25:3: 2.
The invention is further illustrated by the following examples. It is to be noted that the invention is not limited to the described embodiments only.
Example 1
The TPU particles are commercially available common TPU particles, triethanolamine and epoxy resin are commercially available chemical pure reagents, the stirring reaction kettle is an XHS212-80L double-layer glass reaction kettle from Shanghai Campsiham, the plasticator is an electrical heating open mill from Jiangdu city Jingzhuo SK-160, and the plasma processor is a plasma surface processor from Preris PLS-CX 06.
(1) Mixing TPU particles, triethanolamine and epoxy resin according to a mass ratio of 25:3:2, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500 rpm, raising the temperature in the stirring reaction kettle to 130 ℃, and fully reacting for 8 minutes to obtain a modified TPU mixture;
(2) putting the modified TPU mixture into a plastic refining machine, plasticizing at 145 ℃, and then heating the plasticized TPU mixture to 165 ℃ for high-temperature remodeling to obtain a modified TPU material;
(3) placing the base fabric in a plasma processor, introducing air containing a small amount of ozone, keeping the air pressure at 150Pa, treating for 15 minutes under the power of 130W, then adjusting the air pressure to 50Pa, treating for 6 minutes under the power of 220W, then increasing the surface temperature of the base fabric to 155 ℃ in an infrared heating mode, and uniformly spraying the modified TPU material in the step (2) on the surface of the base fabric in a spraying mode;
(4) cooling the sprayed fabric to room temperature, and irradiating the fabric by using ultraviolet rays, wherein the wavelength of the ultraviolet rays is 330nm, the irradiation degree is 2.2W/square meter, and the irradiation time is 150 minutes;
(5) and embossing, washing, drying and coiling the fabric subjected to ultraviolet irradiation treatment to obtain the high-strength degradable TPU textile composite material.
Example 2
The TPU particles are commercially available common TPU particles, triethanolamine and epoxy resin are commercially available chemical pure reagents, the stirring reaction kettle is an XHS212-80L double-layer glass reaction kettle from Shanghai Campsiham, the plasticator is an electrical heating open mill from Jiangdu city Jingzhuo SK-160, and the plasma processor is a plasma surface processor from Preris PLS-CX 06.
(1) Mixing TPU particles, triethanolamine and epoxy resin according to a mass ratio of 25:3:2, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1600 revolutions per minute, raising the temperature in the stirring reaction kettle to 135 ℃, and fully reacting for 10 minutes to obtain a modified TPU mixture;
(2) putting the modified TPU mixture into a plastic refining machine, carrying out plasticizing treatment at the plasticizing temperature of 150 ℃, and then heating the plasticized TPU mixture to 175 ℃ for high-temperature remodeling to obtain a modified TPU material;
(3) placing the base fabric in a plasma processor, introducing air containing a small amount of ozone, keeping the air pressure at 150Pa, treating for 20 minutes under the power of 150W, then adjusting the air pressure to 50Pa, treating for 8 minutes under the power of 230W, then increasing the surface temperature of the base fabric to 160 ℃ by adopting an infrared heating mode, and uniformly spraying the modified TPU material in the step (2) on the surface of the base fabric in a spraying mode;
(4) cooling the sprayed fabric to room temperature, and irradiating the fabric by using ultraviolet rays, wherein the wavelength of the ultraviolet rays is 350nm, the irradiation degree is 2.4W/square meter, and the irradiation time is 200 minutes;
(5) and embossing, washing, drying and coiling the fabric subjected to ultraviolet irradiation treatment to obtain the high-strength degradable TPU textile composite material.
Comparative example
The raw materials and preparation method of the high-strength degradable TPU textile composite material of the comparative example are basically the same as those of example 1, except that only the TPU particles are reacted independently under the same conditions in step (1), and triethanolamine and epoxy resin are not added.
Performance testing
The textile materials prepared in examples 1-2 and comparative example were subjected to a performance test according to the general test method in the relevant national standard, wherein the degradation rate was measured by measuring the biological decomposition rate of the textile material after composting for 30d using the bio-composting method.
TABLE 1 product Performance testing
| Rate of degradation | Flex resistance/MPa | Tensile strength/MPa | |
| Example 1 | 8.0% | 53 | 63 |
| Example 2 | 8.1% | 51 | 62 |
| Comparative example | 3.6% | 52 | 63 |
| Commercially available TPU materials | 3.7% | 47 | 55 |
The test results are shown in the table above, the high strength degradable TPU textile composite materials of examples 1-2 have a very significant improvement in degradation performance compared to the comparative examples; compared with the common TPU material sold in the market, the mechanical property of the comparative example is also obviously improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The high-strength degradable TPU textile composite material is prepared from a base fabric and a modified TPU material sprayed on the surface of the base fabric, and is characterized in that the raw materials of the modified TPU material comprise TPU particles, triethanolamine and epoxy resin.
2. The high strength degradable TPU textile composite of claim 1 wherein the process for preparing the modified TPU material comprises the steps of:
(1) mixing TPU particles, triethanolamine and epoxy resin, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500-1600 rpm, raising the temperature in the stirring reaction kettle to 130-135 ℃, and fully reacting for 8-10 minutes to obtain a modified TPU mixture;
(2) and putting the modified TPU mixture into a plastic refining machine, plasticizing at 145-150 ℃, and then heating the plasticized TPU mixture to 165-175 ℃ for high-temperature remodeling to obtain the modified TPU material.
3. The high strength degradable TPU textile composite of claim 2 wherein the mass ratio of TPU particles, triethanolamine, epoxy resin is 25:3: 2.
4. A preparation method of a high-strength degradable TPU textile composite material is characterized by comprising the following steps:
(1) mixing TPU particles, triethanolamine and epoxy resin, putting the mixture into a stirring reaction kettle, stirring at a high speed of 1500-1600 rpm, raising the temperature in the stirring reaction kettle to 130-135 ℃, and fully reacting for 8-10 minutes to obtain a modified TPU mixture;
(2) putting the modified TPU mixture into a plastic refining machine, plasticizing at 145-150 ℃, and then heating the plasticized TPU mixture to 165-175 ℃ for high-temperature remodeling to obtain a modified TPU material;
(3) placing the base fabric in a plasma processor, introducing air containing a small amount of ozone, keeping the air pressure at 150Pa, processing for 15-20 minutes under the power of 130-150W, then adjusting the air pressure to 50Pa, processing for 6-8 minutes under the power of 220-230W, then increasing the surface temperature of the base fabric to 155-160 ℃ by adopting an infrared heating mode, and uniformly spraying the modified TPU material in the step (2) on the surface of the base fabric in a spraying mode;
(4) cooling the sprayed fabric to room temperature, and irradiating the fabric by using ultraviolet rays, wherein the wavelength of the ultraviolet rays is 330-350 nm, the irradiation degree is 2.2-2.4W/square meter, and the irradiation time is 150-200 minutes;
(5) and embossing, washing, drying and coiling the fabric subjected to ultraviolet irradiation treatment to obtain the high-strength degradable TPU textile composite material.
5. The preparation method of the high-strength degradable TPU textile composite material according to claim 4, wherein the mass ratio of the TPU particles, the triethanolamine and the epoxy resin in the step (1) is 25:3: 2.
Priority Applications (1)
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