CN112411196B - High-performance TPU coated fabric and preparation method thereof - Google Patents

High-performance TPU coated fabric and preparation method thereof Download PDF

Info

Publication number
CN112411196B
CN112411196B CN202011221488.2A CN202011221488A CN112411196B CN 112411196 B CN112411196 B CN 112411196B CN 202011221488 A CN202011221488 A CN 202011221488A CN 112411196 B CN112411196 B CN 112411196B
Authority
CN
China
Prior art keywords
adhesive
layer
tpu
drying
coated fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011221488.2A
Other languages
Chinese (zh)
Other versions
CN112411196A (en
Inventor
吴剑锋
苏文
苏海涛
王结良
同惊蛰
同苗苗
刘玉通
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pla 32182
Shaanxi Tonghua Electromechanical Co ltd
Original Assignee
Pla 32182
Shaanxi Tonghua Electromechanical Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pla 32182, Shaanxi Tonghua Electromechanical Co ltd filed Critical Pla 32182
Priority to CN202011221488.2A priority Critical patent/CN112411196B/en
Publication of CN112411196A publication Critical patent/CN112411196A/en
Application granted granted Critical
Publication of CN112411196B publication Critical patent/CN112411196B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • D06N3/145—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 two or more layers of 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/11—Compounds containing epoxy groups or precursors thereof
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/395—Isocyanates
    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0036—Polyester fibres
    • 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
    • D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • 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
    • D06N2209/1621—Water-soluble, water-dispersible
    • 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
    • D06N2209/1692—Weather resistance

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a high-performance TPU coated fabric and a preparation method thereof, wherein the method comprises the following steps: performing gum dipping and pre-drying treatment on the framework layer; performing deblocking and activating treatment on the framework layer subjected to gum dipping and pre-drying treatment, respectively blade-coating adhesive layers on two sides of the framework material subjected to deblocking and activating treatment, and then performing drying treatment; respectively blade-coating the two sides of the framework layer of the bonding layer for pre-drying treatment, and then respectively carrying out tape casting or calendaring on the TPU layers on the outer surfaces of the first side and the second side on the two sides of the material obtained in the step three; and (3) laminating the material obtained in the fourth step by using a laminating roller to obtain the high-performance TPU coated fabric. The TPU coated fabric prepared by the invention has excellent product performance, particularly has weather resistance, stripping strength and softening coefficient far higher than those of the same type of materials on the market, and can greatly reduce the cost.

Description

High-performance TPU coated fabric and preparation method thereof
Technical Field
The invention belongs to the technical field of rubber or coated fabrics, and particularly relates to a high-performance TPU coated fabric and a preparation method thereof.
Background
The TPU coated fabric is a composite material which takes polyester fabric or nylon fabric as a framework material and TPU (thermoplastic polyurethane) as a coating material, wherein the framework material is often called base cloth in the industry, and the TPU is often called surface coating. Because the TPU coated fabric has the advantages of light weight, high strength, sanitation, environmental protection, antibiosis and the like, the TPU coated fabric has wide application in the fields of kayaks, soft water storage, oil storage containers and the like. In order to save cost or limit processing and manufacturing level, the common performance of TPU coated fabrics on the market is not high, and the harness prepared by using the TPU coated fabrics is easy to damage and has short service life.
The most important performance criteria affecting the life of the above harness are the weatherability, peel strength, softening coefficient, etc. of the TPU coated fabric.
The test method for the weatherability of TPU coated fabrics is generally according to GB/T16422.2 plastics laboratory light exposure test method part 2: xenon arc lamp, which was irradiated for a certain time to examine the change in the surface state of the coated fabric. The weather resistance is poor, and the phenomena that the surface of the coated fabric is cracked, foamed and pulverized under the irradiation of the sun, so that the use of the harness is influenced are often shown.
The stripping strength refers to the bonding force between the TPU coating and the fabric on the surface of the coated fabric. The detection method is generally determined according to the adhesion strength of rubber and plastic coated fabric coatings of HG/T3052-2008. The higher the peeling strength is, the higher the hydrostatic pressure which can be borne by the harness is, the larger the amount of water (oil) which can be contained by the harness is, and on the contrary, the lower the peeling strength is, the harness may be cracked, leaked or oiled due to the peeling of the coating and the base cloth under the continuous action of the hydrostatic pressure of water.
The softening coefficient is the retention rate of the peeling strength, namely, the peeling strength of the coated fabric is gradually reduced when the coated fabric is continuously soaked in water, the softening coefficient is the ratio of the peeling strength after soaking in water to the initial peeling strength, the larger the softening coefficient is, the longer the service life of the coated fabric can be kept after the coated fabric is filled with water, and the smaller the softening coefficient is, the peeling strength can be rapidly degraded, and the coated fabric is cracked.
Since the performance indexes belong to professional knowledge, TPU coated fabrics do not pay much attention to the important indexes. From the results of pen workers' research, the weather resistance is not improved generally, or only about 500h xenon lamp aging does not crack and powdering requirements; the softening coefficient is usually required to be not less than 70 percent after being soaked in distilled water of 70 ℃ for one week. The peel strength often varies with the type of substrate, coating thickness and application of the harness.
Therefore, there is a great need in the art for a new technology for coating fabrics with high performance TPU having higher weatherability, peel strength and softening coefficient.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a preparation method of a high-performance TPU coated fabric, the TPU coated fabric prepared by the method has higher weather resistance, stripping strength and softening coefficient, and the harness prepared by the material has longer service life and storage life.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for preparing a high performance TPU coated fabric, comprising the steps of:
step one, performing gum dipping and pre-drying treatment on a framework layer;
step two, deblocking and activating the framework layer after gum dipping and pre-drying treatment;
step three, respectively blade-coating adhesive layers on two sides of the skeleton material subjected to deblocking and activation treatment, and then drying;
step four, pre-baking the framework layer with the two sides respectively coated with the adhesive layer, and then respectively casting or rolling TPU (thermoplastic polyurethane) layers on the outer surfaces of the first side and the second side on the two sides of the material obtained in the step three;
and step five, laminating the material obtained in the step four by using a laminating roller to obtain the high-performance TPU coated fabric.
Further, in the first step, the framework layer is subjected to dipping and pre-drying treatment, the adopted dipping solution is a mixed aqueous solution of closed isocyanate and glycerol diglycidyl ether, the mass of the closed isocyanate is 3% -4.5% of the dipping solution, the mass of the glycerol diglycidyl ether is 1.5% -3% of the dipping solution, the dipping and pre-drying mangling rate is not less than 40%, the dipping and pre-drying temperature is 150-160 ℃, and the pre-drying time is 2-3 minutes.
Further, in the second step, the framework layer after the dipping and pre-drying treatment is subjected to deblocking and activation treatment, wherein the deblocking and activation temperature is 210-220 ℃, and the time is 2-3 minutes.
Furthermore, the drying temperature in the third step is 150-165 ℃, and the drying time is 2-4 minutes.
Further, when the framework layer in the fourth step is subjected to pre-drying treatment, the pre-drying temperature is 160-170 ℃, and the pre-drying time is 8-12 s; and after the pre-drying treatment, respectively carrying out tape casting or calendering on the outer surfaces of the first surface and the second surface of the material obtained in the third step, wherein the temperature during tape casting is 180-200 ℃, and the press delay temperature is 170-190 ℃.
Further, in the fifth step, the material obtained in the fourth step is attached by using a laminating roller, the pressure of the laminating roller is 5-7 bar, and the temperature of the laminating roller is 80-100 ℃.
The invention also provides a high-performance TPU coated fabric, which comprises a first outer surface layer, a first bonding layer, a framework layer, a second bonding layer and a second outer surface layer which are sequentially laminated from top to bottom; the components of the first outer surface layer and the second outer surface layer are respectively composed of aromatic polyether type thermoplastic polyurethane, an antioxidant and a weather-resistant auxiliary agent, the first bonding layer and the second bonding layer are respectively obtained by coating an adhesive on a framework layer in a scraping mode and drying, the adhesive is composed of an adhesive, a curing agent, a diluent, an accelerant and a catalyst, and the framework layer is made of polyester plain woven fabric.
Further, the oxidant is one or more of an antioxidant 1010, an antioxidant 264 and an antioxidant 168; the weather-resistant auxiliary agent is one or more of UV-68, UV-90 and UV-320.
Further, the total weight of the adhesive layer is 30 to 100g/m 2 The adhesive is polyether polyurethane adhesive, and accounts for 60-75% of the total weight of the adhesive;
the curing agent is polyisocyanate, can be one or more of TDI (toluene diisocyanate), MDI (diphenylmethane diisocyanate), TPTI (triphenyl thiophosphate isocyanate) and the like, and accounts for 4-10% of the total weight of the adhesive;
the diluent is toluene and/or butanone, and accounts for 10-30% of the total weight of the adhesive;
the accelerator is an epoxy compound and can be one or more of glycidyl ethers, and accounts for 1-4% of the total weight of the adhesive;
the catalyst is a tertiary amine compound, can be one or more of triethylamine, diethylenetriamine, triethylenediamine and the like, and accounts for 0.5-1.5% of the total weight of the adhesive.
Further, the first outer surface is coated on the first bonding layer by a casting or calendering process; the second outer surface layer is coated on the second adhesive layer by a casting or calendering process.
The invention has the following beneficial effects:
the product of the invention has excellent performance, particularly has weather resistance, stripping strength and softening coefficient far higher than those of the same type of materials on the market, and reaches the standard.
The better weather resistance is mainly due to the good weather resistance of the TPU material of the outer surface layer, and the mechanism of the good weather resistance mainly comes from two aspects: firstly, the TPU layer on the outer surface is added with composite weather-resistant auxiliaries, including ultraviolet absorbers, antioxidants and the like, and different types of weather-resistant auxiliaries play a synergistic effect, so that the comprehensive weather resistance is more excellent; and secondly, the aromatic polyether type TPU is adopted, and the polyether type TPU has good water resistance, so that the comprehensive effect of photo aging and hydrolytic aging is reduced.
The good peeling strength is mainly due to two reasons and mechanisms, namely, firstly, the base fabric (namely the framework layer) is activated, the surface active groups of the polyester base fabric are few, and the combination effect with the TPU coating on the outer surface is poor in general conditions; the adhesive adopted by the invention is determined by multiple tests, wherein the adhesive, the curing agent, the accelerator and the like are obtained by multiple tests, the optimal proportion is obtained, and the larger peel strength can be obtained.
The better softening coefficient is mainly the reason and mechanism of three aspects, firstly, terylene in the framework layer is activated, the surface activating group of the terylene is hydroxyl, and the hydroxyl is a water-resistant group; the adhesive in the adopted adhesive is polyether adhesive, the main chemical bond in the polyether adhesive is ether bond, and the ether bond is single bond, so that the adhesive is not easily reacted by water and is waterproof; thirdly, the adopted curing agent, the accelerant and the adhesive react to form a net-shaped cross-linking structure, and the water resistance is further improved.
In addition, the product performance of the invention is obviously improved, the cost is improved a little, and the cost is improved by about 3 yuan per square meter compared with the traditional material and preparation method through measurement and calculation.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a high performance TPU coated fabric provided by the present invention;
the composite material comprises a base layer, a first outer surface layer, a second outer surface layer, a framework layer, a first adhesive layer, a second adhesive layer, a framework layer, a second adhesive layer and a third outer surface layer, wherein 1, the first outer surface layer, 2, the first adhesive layer, 3, the framework layer, 4, the second adhesive layer, 5 and the second outer surface layer are sequentially arranged.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1
A high performance TPU coated fabric comprising the steps of:
(1) And (3) performing gum dipping and pre-drying treatment on the framework layer, wherein gum dipping liquid is a mixed aqueous solution of closed isocyanate and glycerol diglycidyl ether, the mass fraction of the closed isocyanate is 3.25%, the mass fraction of the glycerol diglycidyl ether is 2%, the gum dipping and pre-drying mangling rate is 40%, the gum dipping and pre-drying temperature is 155 ℃, and the pre-drying time is 3 minutes.
(2) And (3) performing deblocking and activation treatment on the framework layer subjected to gum dipping and pre-drying treatment, wherein the deblocking and activation temperature is 190 ℃ and the time is 3 minutes. And (5) rolling and sealing for storage.
(3) Respectively coating adhesive layers on two sides of the activated framework material obtained in the step (2), and then drying at the temperature of 150-165 ℃ for 2-4 minutes;
(4) Pre-baking the framework layer at the temperature of 170 ℃ for about 2s to enable the base glue to be in an activated state, so that the subsequent stripping strength with the TPU layer on the outer surface is improved; and (3) respectively casting TPU layers on the outer surfaces of two sides of the material obtained in the step (3), wherein the casting delay temperature is 190 ℃.
(5) And (5) bonding the material obtained in the step (4) by using a laminating roller, wherein the pressure of the laminating roller is 5-7 bar, and the temperature of the laminating roller is 80 ℃. And (4) rolling after fitting to obtain the high-performance TPU coated fabric.
As shown in fig. 1, the high-performance TPU coated fabric prepared by the method of this embodiment includes a first outer surface layer 1, a first adhesive layer 2, a skeleton layer 3, a second adhesive layer 4, and a second outer surface layer 5, which are sequentially laminated from top to bottom; the first outer surface 1 and the second outer surface 5 are generally referred to as outer surface TPU layers and both comprise aromatic polyether type thermoplastic polyurethane, an antioxidant and a weather-resistant auxiliary agent, the first bonding layer 2 and the second bonding layer 4 are generally referred to as bonding layers and are obtained by coating a bonding agent on a framework layer in a scraping manner and drying, the bonding agent is composed of an adhesive, a curing agent, a diluent, an accelerator and a catalyst, and the framework layer 3 is a polyester plain weave fabric.
The main material of the outer surface TPU layer is aromatic polyether type thermoplastic polyurethane, the hardness is 80A, and the thickness of the outer surface TPU layer is 0.1mm.
The TPU layer on the outer surface is also added with an antioxidant 1010, and the using amount of the antioxidant 1010 is 0.5 percent of the mass of the aromatic polyether type thermoplastic polyurethane.
And weather-resistant auxiliary agent UV-90 is also added into the TPU layer on the outer surface, and the using amount of the weather-resistant auxiliary agent UV-90 is 0.4 percent of the mass of the aromatic polyether type thermoplastic polyurethane.
The outer surface TPU layer is coated on the framework layer and the bonding layer through a casting process.
The adhesive layer is obtained by coating an adhesive on the framework layer by blade coating and drying.
The adhesive consists of adhesive, curing agent, diluent, promoter and catalyst, and the total weight of the adhesive layer is 40-60 g/m 2 。
The adhesive is polyether polyurethane adhesive and accounts for 60% of the total amount of the adhesive.
The curing agent is polyisocyanate, can be one or more of TDI (toluene diisocyanate), MDI (diphenylmethane diisocyanate), TPTI (triphenyl thiophosphate isocyanate) and the like, and accounts for 8 percent of the total amount of the adhesive.
The diluent is toluene and accounts for 28.5 percent of the total amount of the adhesive.
The accelerator is glycerol diglycidyl ether epoxy accounting for 2.2 percent of the total weight of the adhesive
The catalyst was triethylenediamine and accounted for 1.3% of the total binder.
The framework layer is high-strength polyester plain weave fabric, the denier range of the polyester fabric is 500D, and the tensile strength is not less than 2300N.
Example 2
A high performance TPU coated fabric comprising the steps of:
(1) And (3) performing gum dipping and pre-drying treatment on the framework layer, wherein gum dipping liquid is a mixed aqueous solution of closed isocyanate and glycerol diglycidyl ether, the mass fraction of the closed isocyanate is 3.25%, the mass fraction of the glycerol diglycidyl ether is 2%, the gum dipping and pre-drying mangling rate is 45%, the gum dipping and pre-drying temperature is 160 ℃, and the pre-drying time is 3 minutes.
(2) And (3) performing deblocking and activating treatment on the framework layer subjected to gum dipping and pre-drying treatment, wherein the deblocking and activating temperature is 220 ℃, and the time is 2 minutes and 30 seconds. Rolling and sealing for storage.
(3) Respectively coating adhesive layers on two sides of the activated framework material obtained in the step (2), and then drying at the temperature of 150-165 ℃ for 2-4 minutes;
(4) Pre-drying the framework layer at the temperature of 160 ℃, wherein the pre-drying time is about 10s, so that the primer is in an activated state, and the subsequent stripping strength with the TPU layer on the outer surface is improved; and (3) respectively casting TPU layers on the outer surfaces of two sides of the material obtained in the step (3), wherein the casting temperature is 180-200 ℃.
(5) And (3) attaching the material obtained in the step (4) by using a laminating roller, wherein the pressure of the laminating roller is 5-7 bar, and the temperature of the laminating roller is 80 ℃. And (4) rolling after attaching to obtain the high-performance TPU coated fabric.
The main material of the outer surface TPU layer is aromatic polyether TPU, the hardness is 85A, and the thickness of the outer surface TPU layer is 0.1mm.
The TPU layer on the outer surface is also added with an antioxidant 1010, and the mass ratio is 0.5%.
And a weather-resistant auxiliary agent UV-90 is also added into the TPU layer on the outer surface, and the mass ratio of the weather-resistant auxiliary agent UV-90 is 0.4%.
The outer surface TPU layer is coated on the framework layer and the bonding layer through a casting process.
The adhesive layer is obtained by coating an adhesive on a base cloth in a scraping way and drying.
The adhesive consists of adhesive, curing agent, diluent, promoter and catalyst, and the total weight of the adhesive layer is 40-60 g/m 2 。
The adhesive is polyether polyurethane adhesive, and accounts for 70% of the total amount of the adhesive.
The curing agent is polyisocyanate, and can be one or more of TDI (toluene diisocyanate), MDI (diphenylmethane diisocyanate), TPTI (triphenyl thiophosphate isocyanate) and the like, and accounts for 4.3 percent of the total amount of the adhesive.
The diluent is toluene and accounts for 22.5 percent of the total weight of the adhesive.
The accelerator is glycerol diglycidyl ether epoxy which accounts for 2.1 percent of the total weight of the adhesive
The catalyst was triethylenediamine, making up 1.1% of the total binder.
The framework layer is high-strength polyester plain weave fabric, the denier range of the polyester fabric is 1000D, and the tensile strength is not less than 2300N.
Example 3
A preparation method of a high-performance TPU coated fabric comprises the following steps:
(1) And (3) performing gum dipping and pre-drying treatment on the framework layer, wherein the gum dipping solution is a mixed aqueous solution of closed isocyanate and glycerol diglycidyl ether, the mass fraction of the closed isocyanate is 3.25%, the mass fraction of the glycerol diglycidyl ether is 2%, the gum dipping and pre-drying mangling rate is 52%, the gum dipping and pre-drying temperature is 160 ℃, and the pre-drying time is 3 minutes.
(2) And (3) performing deblocking and activation treatment on the framework layer subjected to gum dipping and pre-drying treatment, wherein the deblocking and activation temperature is 220 ℃ and the time is 3 minutes. And (5) rolling and sealing for storage.
(3) Respectively blade-coating adhesive layers on two sides of the activated framework material obtained in the step (2), and then drying at the temperature of 150-165 ℃ for 2-4 minutes;
(4) Pre-drying the framework layer at 165 ℃ for about 20s to enable the primer to be in an activated state, so that the subsequent stripping strength with the TPU layer on the outer surface is improved; and (3) respectively casting TPU layers on the outer surfaces of two sides of the material obtained in the step (3), wherein the casting temperature is 180-200 ℃.
(5) And (5) bonding the material obtained in the step (4) by using a laminating roller, wherein the pressure of the laminating roller is 7bar, and the temperature of the laminating roller is 80 ℃. And (4) rolling after fitting to obtain the high-performance TPU coated fabric.
The main material of the outer surface TPU layer is aromatic polyether TPU, the hardness is 85A, and the thickness of the outer surface TPU layer is 0.15mm.
The TPU layer on the outer surface is also added with an antioxidant 1010, and the mass ratio is 0.5%.
And a weather-resistant auxiliary agent UV-90 is also added into the TPU layer on the outer surface, and the mass ratio of the weather-resistant auxiliary agent UV-90 is 0.5%.
The TPU layer on the upper outer surface is coated on the framework layer and the bonding layer through a casting process.
The adhesive layer is obtained by coating an adhesive on the framework layer by blade coating and drying.
The adhesive consists of adhesive, curing agent, diluent, promoter and catalyst, and the total weight of the adhesive layer is 40-60 g/m 2 。
The adhesive is polyether polyurethane adhesive and accounts for 75% of the total amount of the adhesive.
The curing agent is polyisocyanate, can be one or more of TDI (toluene diisocyanate), MDI (diphenylmethane diisocyanate), TPTI (triphenyl thiophosphate isocyanate) and the like, and accounts for 5.5 percent of the total amount of the adhesive.
The diluent is toluene and accounts for 17% of the total amount of the adhesive.
The accelerator is glycerol diglycidyl ether epoxy which accounts for 1.5 percent of the total weight of the adhesive.
The catalyst is triethylene diamine and accounts for 1 percent of the total adhesive.
The framework layer is high-strength polyester plain weave fabric, the denier range of the polyester fabric is 1500D, and the tensile strength is not less than 2300N.
Comparative example 1: (framework layer not activated)
The main difference between comparative example 1 and example 3 is that: and (3) not performing the step (2), namely after the framework layer is subjected to gum dipping and pre-drying treatment, performing deblocking and activating treatment on the framework layer subjected to gum dipping and pre-drying treatment, and directly blade-coating adhesive layers on two sides of the framework layer. The other steps were the same as in example 3.
Comparative example 2: (use of a commercially available polyester type adhesive)
The main difference between comparative example 2 and example 3 is that: the material of the composite adhesive used for the adhesive layer in comparative example 2 was different from that in example 3. The adhesive layer adopted in comparative example 2 consists of an adhesive, a curing agent and a diluent, and the total weight of the adhesive layer is 40 to 60g/m 2 . The adhesive is polyester polyurethane adhesive, specifically a Gaoding 6045H, and the mass ratio thereofThe content was 80%. The curing agent is a mixture of TDI and MDI, specifically CX800D, and the mass ratio of the curing agent is 5%. The diluent is butanone and the mass ratio of the butanone is 15%.
Comparative example 2 except that the material used for the adhesive layer was different, the preparation process and the amount of other materials were the same as those in example 3.
Comparative example 3 (surface coating with no weather resistance auxiliary)
The main difference between comparative example 3 and example 3 is that: the material used for the outer TPU layer in comparative example 3 was different from that in example 3. The TPU layer on the outer surface is a common TPU layer without adding a composite weather-resistant auxiliary agent, only an antioxidant 1010 is added, and the mass ratio is 0.8%.
Comparative example 3 except that the material used for the adhesive layer was different, the preparation process and the amount of other materials were the same as those in example 3.
The TPU coated fabrics prepared in examples 1-3 and comparative examples 1-3 were tested for weatherability, peel strength and softening coefficient at the same level of strength of the carcass material and the same thickness of the outer layer, and the results are shown in Table 1.
TABLE 1 results of the performance testing of TPU coated fabrics prepared in examples 1-3 and comparative examples 1-3
Figure BDA0002762195180000081
Figure BDA0002762195180000091
As can be seen from the above table: the TPU coated fabric prepared by the invention has excellent product performance, and the material has higher weather resistance, stripping strength and softening coefficient.
As can be seen from comparison of comparative example 1 and example 3, the polyester surface activation has a very significant effect on improvement of peeling strength and improvement of softening coefficient. As can be seen from comparison between comparative example 2 and example 3, the use of the polyester type adhesive is effective in improving the peel strength, but the softening coefficient is remarkably decreased due to the water-insoluble property of the polyester. As can be seen from comparison between comparative example 3 and example 3, the common aromatic polyether TPU is only added with antioxidant 1010 and is not added with other anti-aging auxiliary agents, so that the anti-aging performance of the coating is poor.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A preparation method of a high-performance TPU coated fabric is characterized by comprising the following steps:
step one, performing gum dipping and pre-drying treatment on a framework layer;
step two, performing deblocking and activating treatment on the framework layer subjected to gum dipping and pre-drying treatment;
step three, respectively blade-coating adhesive layers on two sides of the skeleton material subjected to deblocking and activation treatment, and then drying;
step four, respectively carrying out pre-drying treatment on the framework layer with the adhesive layers coated on the two sides, and then carrying out tape casting or calendaring on the surface TPU layers on the adhesive layers on the two sides of the framework layer;
fifthly, laminating the material obtained in the fourth step by using a laminating roller to obtain the high-performance TPU coated fabric;
performing gum dipping and pre-baking treatment on the framework layer in the first step, wherein the adopted gum dipping solution is a mixed aqueous solution of closed isocyanate and glycerol diglycidyl ether, the mass of the closed isocyanate is 3% -4.5% of the gum dipping solution, the mass of the glycerol diglycidyl ether is 1.5% -3% of the gum dipping solution, the gum dipping and pre-baking mangling rate is not less than 40%, the gum dipping and pre-baking temperature is minus 150 ℃ to 160 ℃, and the pre-baking time is 2 to 3 minutes;
in the second step, the framework layer after gum dipping and pre-baking is subjected to deblocking activation treatment, wherein the deblocking activation temperature is 210-220 ℃, and the time is 2-3 minutes;
the high-performance TPU coated fabric comprises a first outer surface layer, a first adhesive layer, a framework layer, a second adhesive layer and a second outer surface layer which are sequentially laminated from top to bottom; the components of the first outer surface and the second outer surface layer are respectively composed of aromatic polyether type thermoplastic polyurethane, an antioxidant and a weather-resistant auxiliary agent, the first bonding layer and the second bonding layer are respectively obtained by coating an adhesive on a framework layer in a scraping manner and drying, the adhesive is composed of an adhesive, a curing agent, a diluent, an accelerant and a catalyst, and the framework layer is a polyester plain weave fabric;
the antioxidant is one or more of antioxidant 1010, antioxidant 264 and antioxidant 168; the weather-resistant auxiliary agent is one or more of UV-68, UV-90 and UV-320;
the adhesive is polyether polyurethane adhesive and accounts for 60-75% of the total weight of the adhesive;
the curing agent is polyisocyanate and accounts for 4-10% of the total weight of the adhesive;
the diluent is toluene and/or butanone, and accounts for 10-30% of the total weight of the adhesive;
the accelerant is an epoxy compound and accounts for 1-4% of the total weight of the adhesive;
the catalyst is a tertiary amine compound and accounts for 0.5-1.5% of the total weight of the adhesive.
2. The method for preparing the high-performance TPU coated fabric as claimed in claim 1, wherein the temperature of the drying treatment in the third step is 150 to 165 ℃ and the drying time is 2 to 4 minutes.
3. The method for preparing the high-performance TPU coated fabric according to claim 1, wherein when the framework layers of the bonding layer are respectively coated on the two sides in the fourth step in a scraping manner and subjected to pre-drying treatment, the pre-drying temperature is 160 to 170 ℃, and the pre-drying time is 8 to 12s; and after the pre-baking treatment, casting or rolling TPU layers on the outer surfaces of the bonding layers on the two sides of the framework layer, wherein the casting delay temperature is 180-200 ℃, and the pressing delay temperature is 170-190 ℃.
4. The preparation method of the high-performance TPU coated fabric according to claim 1, wherein in the fifth step, the material obtained in the fourth step is bonded by a laminating roller, the pressure of the laminating roller is 5 to 7bar, and the temperature of the laminating roller is 80 to 100 ℃.
5. The method of claim 1, wherein the first outer surface is coated on the first adhesive layer by a casting or calendering process; the second outer surface layer is coated on the second adhesive layer by a casting or calendaring process.
CN202011221488.2A 2020-11-05 2020-11-05 High-performance TPU coated fabric and preparation method thereof Active CN112411196B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011221488.2A CN112411196B (en) 2020-11-05 2020-11-05 High-performance TPU coated fabric and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011221488.2A CN112411196B (en) 2020-11-05 2020-11-05 High-performance TPU coated fabric and preparation method thereof

Publications (2)

Publication Number Publication Date
CN112411196A CN112411196A (en) 2021-02-26
CN112411196B true CN112411196B (en) 2023-02-28

Family

ID=74827916

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011221488.2A Active CN112411196B (en) 2020-11-05 2020-11-05 High-performance TPU coated fabric and preparation method thereof

Country Status (1)

Country Link
CN (1) CN112411196B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105780521A (en) * 2016-05-23 2016-07-20 中纺新材料科技有限公司 TPU (Thermoplastic Polyurethane)-coated PE (Poly Ethylene) mesh-cloth composite fabric and manufacture method thereof
CN106142796A (en) * 2016-07-19 2016-11-23 中纺新材料科技有限公司 A kind of preparation method of oil storage bag TPU composite
CN107700220A (en) * 2017-10-18 2018-02-16 江苏太极实业新材料有限公司 A kind of preparation method of fibre framework materials dipping solution
CN109082893A (en) * 2018-08-16 2018-12-25 联新（开平）高性能纤维有限公司 A kind of environmental protection fiber framework material dipping solution and its preparation process and application
CN110511459A (en) * 2019-09-02 2019-11-29 北京化工大学 A kind of fibre framework materials dipping solution, preparation method and dipping method
CN111395001A (en) * 2020-03-30 2020-07-10 联新（开平）高性能纤维有限公司 Conductive dipping solution, preparation method and application thereof, dipped cord and preparation method and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6908528B2 (en) * 2001-08-02 2005-06-21 Reeves Brothers, Inc. Laminate composite fabric
CA2732694C (en) * 2008-08-06 2018-03-13 Lubrizol Advanced Materials, Inc. Films and articles made with thermoplastic block copolymers
CN104527190B (en) * 2014-12-09 2016-06-29 福州大学 A kind of oil storage bag TPU composite

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105780521A (en) * 2016-05-23 2016-07-20 中纺新材料科技有限公司 TPU (Thermoplastic Polyurethane)-coated PE (Poly Ethylene) mesh-cloth composite fabric and manufacture method thereof
CN106142796A (en) * 2016-07-19 2016-11-23 中纺新材料科技有限公司 A kind of preparation method of oil storage bag TPU composite
CN107700220A (en) * 2017-10-18 2018-02-16 江苏太极实业新材料有限公司 A kind of preparation method of fibre framework materials dipping solution
CN109082893A (en) * 2018-08-16 2018-12-25 联新（开平）高性能纤维有限公司 A kind of environmental protection fiber framework material dipping solution and its preparation process and application
CN110511459A (en) * 2019-09-02 2019-11-29 北京化工大学 A kind of fibre framework materials dipping solution, preparation method and dipping method
CN111395001A (en) * 2020-03-30 2020-07-10 联新（开平）高性能纤维有限公司 Conductive dipping solution, preparation method and application thereof, dipped cord and preparation method and application thereof

Also Published As

Publication number Publication date
CN112411196A (en) 2021-02-26

Similar Documents

Publication Publication Date Title
EP1481033B1 (en) Environmentally preferred high solids, low viscosity flock adhesives
KR101384907B1 (en) Adhesive agent composition and laminated body
CN111100592B (en) Latent single-component polyurethane hot melt adhesive, preparation method thereof and adhesive film
WO2022007613A1 (en) Solvent-free single-component moisture-curing polyurethane adhesive for use on wood and preparation method therefor
Hashim et al. Effects of cold setting adhesives on properties of laminated veneer lumber from oil palm trunks in comparison with rubberwood
CN109082893B (en) Environment-friendly fiber framework material impregnation liquid and preparation process and application thereof
CN112322241B (en) High initial adhesion polyurethane composite adhesive and preparation method and application thereof
CN110776869A (en) High-temperature-resistant high-strength polyurethane structural adhesive and preparation method thereof
CN112126403A (en) Bonding composition for solar back panel and adhesive thereof
EP4253478A1 (en) Epoxy resin composition and transparent composite material comprising same, and laminated board
CN112411196B (en) High-performance TPU coated fabric and preparation method thereof
CN104327696A (en) Polycarbonate polyol type spraying polyurea elastomer coating and preparation method
CN106142796B (en) A kind of preparation method of oil storage bag TPU composite material
EP2551321A1 (en) Curing agent composition for epoxy resin based adhesive, and adhesive for porous materials
CN112318976A (en) High-weather-resistance TPU composite material
CN111826113A (en) Paper-plastic film-coated moisture curing reaction type polyurethane hot melt adhesive and preparation method thereof
CN113831830B (en) High-barrier polyurethane self-repairing composition and preparation method thereof
CN113881386B (en) Composite hot melt adhesive and composite board using same
CN112812728B (en) Polyurethane adhesive and preparation method and application thereof
US11981767B2 (en) Solventless adhesive composition and process for making and use in forming a laminate
US6720401B2 (en) Coating composition
CN111021068B (en) Impregnation treatment technology for impregnated aramid fiber ropes for polyurethane synchronous belt
CN110511327B (en) Fluorine-containing tackifying resin and preparation and application thereof
CN112778959A (en) High-strength damp-heat resistant bi-component PU adhesive and preparation method thereof
CN114801250A (en) Continuous machine-made glass fiber reinforced plastic with friendly bonding interface and preparation process thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant