CN115559124B - Polyurethane synthetic leather for electronic athletic seat and preparation method thereof - Google Patents
Polyurethane synthetic leather for electronic athletic seat and preparation method thereof Download PDFInfo
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- CN115559124B CN115559124B CN202211384226.7A CN202211384226A CN115559124B CN 115559124 B CN115559124 B CN 115559124B CN 202211384226 A CN202211384226 A CN 202211384226A CN 115559124 B CN115559124 B CN 115559124B
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 68
- 239000004814 polyurethane Substances 0.000 title claims abstract description 68
- 239000002649 leather substitute Substances 0.000 title claims abstract description 65
- 230000000386 athletic effect Effects 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 77
- 239000002344 surface layer Substances 0.000 claims abstract description 50
- 239000004744 fabric Substances 0.000 claims abstract description 49
- 238000001035 drying Methods 0.000 claims abstract description 36
- 239000012790 adhesive layer Substances 0.000 claims abstract description 31
- 229920001410 Microfiber Polymers 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000003658 microfiber Substances 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000004381 surface treatment Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 62
- 239000002002 slurry Substances 0.000 claims description 38
- 239000003063 flame retardant Substances 0.000 claims description 30
- 239000011248 coating agent Substances 0.000 claims description 29
- 238000000576 coating method Methods 0.000 claims description 29
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 230000007062 hydrolysis Effects 0.000 claims description 17
- 238000006460 hydrolysis reaction Methods 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229910001377 aluminum hypophosphite Inorganic materials 0.000 claims description 7
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 claims description 7
- 239000008188 pellet Substances 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 229920002545 silicone oil Polymers 0.000 claims description 7
- 239000012748 slip agent Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical compound CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 claims description 5
- 229920005749 polyurethane resin Polymers 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229910021384 soft carbon Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002740 effect on eyes Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- FJQXCDYVZAHXNS-UHFFFAOYSA-N methadone hydrochloride Chemical compound Cl.C=1C=CC=CC=1C(CC(C)N(C)C)(C(=O)CC)C1=CC=CC=C1 FJQXCDYVZAHXNS-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
- D06N3/0002—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
- D06N3/0004—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 ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
-
- 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
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic 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
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
-
- 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
- D06N3/128—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 silicon polymers
-
- 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
- D06N3/142—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 mixture of polyurethanes with other resins in the same layer
-
- 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
- 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
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses polyurethane synthetic leather for an electronic athletic seat and a preparation method thereof, and the polyurethane synthetic leather comprises the following steps: providing a base fabric, and carrying out surface pretreatment on the base fabric by adopting a TPU solution, wherein the base fabric is microfiber fabric; sequentially forming a surface layer, an intermediate layer and an adhesive layer; attaching TPU pretreated base cloth on the surface of the bonding layer at 160-180 ℃, and cooling to obtain polyurethane synthetic leather; and carrying out surface treatment on the polyurethane synthetic leather to obtain the polyurethane synthetic leather for the electronic athletic seat. The microfiber cloth is pretreated by adopting a low-temperature TPU solution with a softening point (lower than the attaching temperature), and then the TPU is softened at 160-180 ℃ and is combined with the fastness of the full-dry adhesive layer, so that the DMF content of the polyurethane synthetic leather is qualified at one time, the re-drying process or the process of multiple times of drying is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of polyurethane synthetic leather, and particularly relates to polyurethane synthetic leather for an electronic athletic seat and a preparation method thereof.
Background
The electronic athletic seat is a seat which is specially designed to ensure the comfort of the user and accords with the ergonomics and is convenient for the operation and experience of the user.
Among them, the fabric of the seat for electronic athletic is an important component affecting the use experience thereof. At present, the electronic athletic chair mainly uses more fabric electronic athletic chairs, and the fabric is easy to pollute and difficult to manage, has poor comfort and is easy to wrinkle and deform when the electronic athletic chair is used for a long time, although the air permeability is better. In addition, there are a small number of electronic contests with wet polyurethane synthetic leather as the surface fabric, but there are production inefficiency, environmental pollution high, energy consumption high grade defect in the course of processing of wet polyurethane synthetic leather, and its goods durable time is not long, physical and chemical properties are poor and the genuine leather feel is not strong, is difficult to satisfy the user demand of electronic contests chair.
The traditional dry polyurethane synthetic leather is prepared by adopting a semi-dry or wet pasting process, DMF is difficult to volatilize thoroughly, the residual quantity of DMF is high, and the leather has certain stimulation effect on eyes, skin and respiratory tract of a user and has certain damage on liver and kidney after being immersed in a body. Although the DMF content can be reduced by multiple bakings in an oven, this clearly leads to increased internal consumption and reduced efficiency.
Disclosure of Invention
In view of the above, the present invention is needed to provide a polyurethane synthetic leather for electronic athletic seats, which is characterized in that microfiber cloth is pretreated by a low-temperature TPU solution (the softening point of which is between 130 and 150 ℃), and then the TPU is softened by heating at 160 to 180 ℃ to be firmly combined with a full-dry bonding layer, so that the DMF content of the polyurethane synthetic leather is qualified at one time, the re-drying procedure is reduced, and the production efficiency is improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a preparation method of polyurethane synthetic leather for an electronic athletic seat, which comprises the following steps:
providing a base fabric, and carrying out surface pretreatment on the base fabric by adopting a TPU solution, wherein the base fabric is microfiber fabric;
Sequentially forming a surface layer, an intermediate layer and an adhesive layer;
Attaching TPU pretreated base cloth on the surface of the bonding layer at 160-180 ℃, and cooling to obtain polyurethane synthetic leather;
and carrying out surface treatment on the polyurethane synthetic leather to obtain the polyurethane synthetic leather for the electronic athletic seat.
Further, the pretreatment process specifically comprises the following steps: transferring the TPU solution to the surface of the base cloth through a 80-mesh surface roller, and drying for later use;
preferably, the TPU solution is obtained from 20 to 30 parts by weight of low temperature TPU pellets having a softening point of 130 to 150℃dissolved in 100 parts by weight of DMF.
Further, the microfiber cloth is non-flame-retardant microfiber cloth.
Further, the surface layer is obtained by coating surface layer slurry on the surface of release paper and drying; the surface layer slurry consists of, by weight, 70-90 parts of soft polycarbonate polyurethane resin, 40-50 parts of DMF (dimethyl formamide), 5-10 parts of silicon resin containing silicon-hydroxyl groups, 5-10 parts of polytetrafluoroethylene wax, 2-5 parts of a soluble phosphazene flame retardant, 2-5 parts of a curing agent and 6-8 parts of pigment color paste.
Further, the intermediate layer is obtained by coating the intermediate layer slurry on the surface of the surface layer and drying; the middle layer slurry consists of, by weight, 70-90 parts of soft high-elasticity high-solid low-viscosity hydrolysis-resistant resin, 40-50 parts of DMF (dimethyl formamide), 3-6 parts of aluminum hypophosphite, 3-6 parts of melamine cyanurate flame retardant, 2-5 parts of curing agent and 6-8 parts of pigment color paste.
Further, the adhesive layer is obtained by coating the adhesive layer slurry on the surface of the intermediate layer and drying; the adhesive layer slurry consists of, by weight, 70-90 parts of a two-component full-dry-paste hydrolysis-resistant resin, 20-40 parts of DMF, 3-6 parts of aluminum hypophosphite, 3-6 parts of a melamine cyanurate compound flame retardant, 2-5 parts of a curing agent and 6-8 parts of pigment color paste.
Further, the surface treatment adopts a hand feeling treating agent to treat the surface of the polyurethane synthetic leather.
Further, the hand feeling treating agent is an aqueous silicone oil type slip agent.
Further, the gap between the coated cutter heads forming the surface layer is 15-20 wires; the gap between the coated cutter heads forming the middle layer is 20-25 filaments; the gap between the coated cutter heads forming the bonding layer is 20-25 wires.
The invention further provides polyurethane synthetic leather for the electronic athletic seat, which is prepared by the preparation method.
The beneficial effects of the invention are as follows:
The invention combines a bi-component full-dry pasting process and a base cloth pretreatment process, pretreats the microfiber cloth by adopting a low-temperature TPU solution with the softening point of 130-150 ℃ (lower than the pasting temperature), and then softens the TPU at 160-180 ℃ and simultaneously combines the TPU with the full-dry pasting adhesive layer in fastness, so that the DMF content of the polyurethane synthetic leather is qualified at one time, the re-drying process or the process of multiple drying is reduced, and the production efficiency is improved.
Detailed Description
The following detailed description of embodiments of the invention is exemplary and is provided merely to illustrate the invention and is not to be construed as limiting 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.
The invention provides a preparation method of polyurethane synthetic leather for an electronic athletic seat, which comprises the following steps:
providing a base fabric, and carrying out surface pretreatment on the base fabric by adopting a TPU solution, wherein the base fabric is microfiber fabric;
Sequentially forming a surface layer, an intermediate layer and an adhesive layer;
Laminating TPU pretreated microfiber cloth on the surface of the bonding layer at 160-180 ℃ and cooling to obtain polyurethane synthetic leather;
and carrying out surface treatment on the polyurethane synthetic leather to obtain the polyurethane synthetic leather for the electronic athletic seat.
According to the invention, the TPU solution is adopted for pretreatment of the base fabric, and then the TPU pretreated microfiber fabric is attached to the bonding layer which is dried to be totally dry and basically free of DMF residues, specifically, the TPU on the surface of the microfiber fabric is softened at 160-180 ℃ and is attached to the totally dry bonding layer in a fastness manner, and the bonding layer is dried to be totally dry and has almost no DMF residues, so that the DMF content of a product is qualified once, and the procedures of re-drying or repeated drying are reduced.
The process of pretreating the base fabric is not particularly limited, and the TPU solution is transferred to the surface of the base fabric and dried for standby. According to the embodiment of the invention, the pretreatment process specifically comprises the following steps: transferring the TPU solution to the surface of the base cloth through a 80-mesh surface roller, and drying for later use. Further, it is understood that the TPU solution described herein is obtained by dissolving low temperature TPU pellets in a suitable solvent, the solvent herein is not particularly limited, any solvent capable of dissolving the low temperature TPU pellets in the art may be used, and in some specific embodiments of the present invention, the TPU solution is obtained by dissolving 20 to 30 parts by weight of low temperature TPU pellets in 100 parts by weight DMF, the low temperature TPU pellets having a softening point temperature below the bonding temperature, preferably, the low temperature TPU pellets having a softening point of 130 to 150 ℃, more preferably, 140 ℃.
The base fabric described herein is preferably a microfiber fabric, which may be flame retardant or non-flame retardant, and in some embodiments of the present invention, non-flame retardant microfiber fabric is preferred for cost reasons.
Further, the surface layer, the intermediate layer and the adhesive layer are not particularly limited, and may be adjusted according to the performance of the polyurethane synthetic leather, and according to the performance requirement of the polyurethane synthetic leather, different functional auxiliary agents are added to each layer to meet the performance requirement. Specifically, according to the embodiment of the invention, in order to improve the wear resistance, hydrolysis resistance and flame retardance of the electronic athletic seat, corresponding functional auxiliary agents are added into the surface layer, the middle layer and the bonding layer; and conventional auxiliaries in the art such as pigment paste can be added according to actual needs, and are not specifically described herein.
Further, the surface layer is obtained by coating surface layer slurry on the surface of release paper and drying; in some specific embodiments of the invention, the wear-resistant additive, the surface layer flame retardant and the like are added into the surface layer slurry to endow the polyurethane synthetic leather with wear resistance and flame retardant properties. The surface layer slurry consists of, by weight, 70-90 parts of soft polycarbonate polyurethane resin, 40-50 parts of DMF (dimethyl formamide) resin, 5-10 parts of silicon resin with silicon-hydroxyl groups, 5-10 parts of polytetrafluoroethylene wax, 2-5 parts of a soluble phosphazene flame retardant, 2-5 parts of a curing agent and 6-8 parts of pigment color paste. The soft carbon polyurethane resin can improve the comfort and durability of the synthetic leather; meanwhile, a silicon resin abrasion-resistant additive containing silicon-hydroxyl groups and polytetrafluoroethylene wax are added into the surface layer slurry to serve as an abrasion-resistant additive, wherein the silicon resin abrasion-resistant additive containing silicon-hydroxyl groups forms a low-modulus high-abrasion-resistant film under the action of a curing agent, and the abrasion resistance of polyurethane synthetic leather is improved by cooperation with the polytetrafluoroethylene wax, so that the Martindale abrasion resistance of a product can be met for 200 ten thousand times.
Further, the intermediate layer is obtained by coating the intermediate layer slurry on the surface of the surface layer and drying; in some specific embodiments of the invention, the middle layer slurry consists of, by weight, 70-90 parts of soft high-elasticity high-solid low-viscosity hydrolysis-resistant resin, 40-50 parts of DMF, 3-6 parts of aluminum hypophosphite, 3-6 parts of melamine cyanurate flame retardant, 2-5 parts of curing agent and 6-8 parts of pigment color paste. The intermediate layer adopts soft high-elasticity high-solid low-viscosity hydrolysis-resistant resin, so that the resin with high solid content can better coat the flame retardant added in the resin under certain viscosity, thereby better playing the flame retardant property of the synthetic leather.
Further, the bonding layer is obtained by coating the bonding layer slurry on the surface of the intermediate layer and drying; in some specific embodiments of the invention, the adhesive layer slurry comprises, by weight, 70-90 parts of a two-component full dry-paste hydrolysis-resistant resin, 20-40 parts of DMF, 3-6 parts of aluminum hypophosphite, 3-6 parts of melamine cyanurate flame retardant, 2-5 parts of a curing agent and 6-8 parts of pigment color paste. The hydrolysis-resistant resin is adopted in the bonding layer, so that the hydrolysis resistance and the wear resistance of the polyurethane synthetic leather can be improved.
According to some specific embodiments of the invention, because the non-flame-retardant microfiber cloth is easy to burn through and the defect of low coating amount by a full dry method is adopted, in order to ensure that the flame retardance of the polyurethane synthetic leather meets the English standard flame retardance, flame retardants are added into a dry surface layer, a middle layer and an adhesive layer in the embodiment of the invention, wherein the soluble phosphazene flame retardant is added into the surface layer, so that the flame retardance of the polyurethane synthetic leather meets the BS5852 PART 1 (0/1 fire source) flame retardance requirement by utilizing the synergistic effect of the flame retardants in three layers while the flexibility and scratch resistance of the polyurethane synthetic leather product are not influenced.
Further, the curing agents used for the surface layer, the middle layer and the adhesive layer may be conventional curing agents in the art, and in some specific embodiments of the present invention, the curing agents are low-temperature sealing curing agents, preferably, 90 ℃ low-temperature sealing curing agents are used, so that the prepared slurries of the layers can be stored for a long time, and the release paper is less damaged without a higher deblocking temperature.
Further, the surface treatment described herein is not particularly limited, and the polyurethane synthetic leather surface is treated with a corresponding surface treatment agent selected according to the requirements of the properties of a specific polyurethane synthetic leather product, thereby imparting the corresponding properties thereto. In some specific embodiments of the present invention, the surface treatment uses a hand feeling treatment agent for the polyurethane synthetic leather surface, preferably, the hand feeling treatment agent is an aqueous silicone oil type slip agent, so as to effectively improve the smoothness, i.e. touch feeling, of the polyurethane synthetic leather surface.
Further, the coating of the surface layer, the intermediate layer and the adhesive layer is not particularly limited, and the surface layer, the intermediate layer and the adhesive layer are coated by adopting a conventional technical means in the art, wherein according to the embodiment of the invention, the gap between the coated cutter heads forming the surface layer is 15-20 wires; the gap between the coated cutter heads forming the middle layer is 20-25 filaments; the gap between the coated cutter heads forming the bonding layer is 20-25 wires.
In another exemplary embodiment of the present invention, there is provided a polyurethane synthetic leather for an electronic athletic seat, which is manufactured using the manufacturing method as described herein. The polyurethane synthetic leather for the electronic athletic seat can ensure that the DMF content is less than or equal to 1000ppm after one-time preparation, greatly reduces the procedures of re-drying or multiple-time drying, and effectively improves the efficiency. According to the embodiment of the invention, different excellent characteristics such as wear resistance, hydrolysis resistance, flame retardance and the like can be endowed to the polyurethane synthetic leather for the electronic athletic seat by adjusting the components in the surface layer, the middle layer and the bonding layer, and the polyurethane synthetic leather can be specifically adjusted according to actual needs and is not specifically described herein.
The present invention will be illustrated by the following examples, which are given for illustrative purposes only and are not intended to limit the scope of the present invention in any way, and unless otherwise specified, the conditions or procedures not specifically described are conventional and the reagents and materials employed are commercially available.
The raw material information used in the following examples and comparative examples is specifically as follows:
Soft carbon polyurethane resin LT-8500N, viscosity of 30-60 Pa.s (25 ℃), solid content of 20+ -1%, 100% modulus of 4.5+ -1.0 Mpa, breaking strength of more than or equal to 30Mpa, elongation at break of more than or equal to 350%, softening point temperature of 200 ℃, and synthetic fertilizer of polyurethane new material Co., ltd;
the soft high-elasticity high-solid low-viscosity hydrolysis-resistant resin LT-8441 is polyether, the viscosity of the resin is 50-70 Pa.s (25 ℃), the solid content is 43+/-1%, the 100% modulus is 4.0+/-1.0 Mpa, the breaking strength is not less than 30Mpa, the elongation at break is not less than 450%, the softening point temperature is 210 ℃, and the polyurethane new material is available from Hefei Anli Co., ltd;
The double-component full-dry-patch hydrolysis-resistant resin LA-7020 is polyether type, the viscosity of the resin is 20-40 Pa.s (25 ℃), the solid content is 50+/-1%, the 100% modulus is 2.0+/-0.5 Mpa, the breaking strength is more than or equal to 8Mpa, the elongation at break is more than or equal to 550%, the softening point temperature is 115 ℃, and the polyurethane new material Co., ltd;
The semi-dry adhesive hydrolysis-resistant resin SA-25H is polyether type, the viscosity of the resin is 30-60 Pa.s (25 ℃), the solid content is 28+/-1%, the 100% modulus is 2.5+/-1.0 Mpa, the breaking strength is more than or equal to 25Mpa, the elongation at break is more than or equal to 400%, the softening point temperature is 150 ℃, and the polyurethane new material company is a compound fertilizer;
silicone SIC 6144F5 containing a silicon-hydroxyl group, molecular polymer limited, silhouette Ke Gao;
polytetrafluoroethylene wax PTFE-0104A, a new material technology company of nanjing Tianshi;
Flame retardant aluminum hypophosphite AFR-10, shenzhen Hongjingjingsu chemical materials Co., ltd;
Melamine cyanurate flame retardant MCA, shandong Thai New Material Co., ltd;
soluble phosphazene flame retardant SPB-100, japanese Ai Dike company;
TPU colloidal particles TL-8000, wanhua chemistry;
spray coating water-based silicone oil slip agent LK-511, hefei blue Kai chemical engineering Co., ltd;
Low temperature sealing curing agent MF-K60X, shenzhen Xiang run New Material Co., ltd;
The non-flame-retardant microfiber cloth has a thickness of 1.0+/-0.05 mm and a gram weight of 460+/-30 g/m 2, which are manufactured by Shanghai Huafeng microfiber materials Co.
Example 1
In this embodiment, the polyurethane synthetic leather sequentially includes four layers of structures of a surface layer, an intermediate layer, a bonding layer and a pretreatment base fabric, and the preparation method thereof specifically includes the following steps:
pretreatment of base cloth: transferring the TPU solution to the front surface of the non-flame-retardant microfiber cloth through a 80-mesh surface roller, and drying for standby, wherein the TPU solution is obtained by dissolving 30 parts of TPU granules through 100 parts of DMF;
forming a surface layer: coating surface layer slurry on the surface of release paper, coating cutter head gaps of 15-20 filaments, and heating and drying at 100 ℃;
forming an intermediate layer: coating the middle layer slurry on the surface of the surface layer, coating cutter head gaps of 20-25 wires, and heating and drying at 100 ℃;
Forming an adhesive layer: coating the adhesive layer slurry on the surface of the middle layer, coating cutter head gaps of 20-25 wires, and heating and drying at 100 ℃;
bonding the bonding layer and the TPU pretreated microfiber base cloth through a heated bonding roller at 160 ℃, and cooling to obtain a polyurethane synthetic leather semi-finished product;
Spraying a water-based silicone oil slip agent LK-511 on the surface of the semi-finished polyurethane synthetic leather, and then drying at 100 ℃ to obtain the finished polyurethane synthetic leather.
The specific compositions of the surface layer, the middle layer and the adhesive layer slurry are shown in table 1.
Table 1 composition of the surface layer, intermediate layer, and adhesive layer slurry in example 1 (parts by weight)
Example 2
In this embodiment, the polyurethane synthetic leather sequentially includes four layers of structures of a surface layer, an intermediate layer, a bonding layer and a pretreatment base fabric, and the preparation method thereof specifically includes the following steps:
Pretreatment of base cloth: transferring the TPU solution to the front surface of the non-flame-retardant microfiber cloth through a 80-mesh surface roller, and drying for standby, wherein the TPU solution is obtained by dissolving 20 parts of TPU granules in 100 parts of DMF;
Forming a surface layer: coating surface layer slurry on the surface of release paper, coating cutter head gaps of 15-20 filaments, and heating and drying at 110 ℃;
Forming an intermediate layer: coating the middle layer slurry on the surface of the surface layer, coating cutter head gaps of 20-25 wires, and heating and drying at 110 ℃;
Forming an adhesive layer: coating the adhesive layer slurry on the surface of the middle layer, coating cutter head gaps of 20-25 wires, and heating and drying at 110 ℃;
bonding the bonding layer and the TPU pretreated microfiber base cloth by a heated bonding roller at 170 ℃, and cooling to obtain a polyurethane synthetic leather semi-finished product;
Spraying a water-based silicone oil type slip agent LK-511 on the surface of the semi-finished polyurethane synthetic leather, and then drying at 110 ℃ to obtain the finished polyurethane synthetic leather.
The specific compositions of the surface layer, the middle layer and the adhesive layer slurry are shown in table 2.
Table 2 composition of the surface layer, intermediate layer, and adhesive layer slurries in example 2 (parts by weight)
Example 3
In this embodiment, the polyurethane synthetic leather sequentially includes four layers of structures of a surface layer, an intermediate layer, a bonding layer and a pretreatment base fabric, and the preparation method thereof specifically includes the following steps:
pretreatment of base cloth: transferring the TPU solution to the front surface of the non-flame-retardant microfiber cloth through a 80-mesh surface roller, and drying for standby, wherein the TPU solution is obtained by dissolving 25 parts of TPU granules through 100 parts of DMF;
Forming a surface layer: coating surface layer slurry on the surface of release paper, coating cutter head gaps of 15-20 filaments, and heating and drying at 120 ℃;
forming an intermediate layer: coating the middle layer slurry on the surface of the surface layer, coating cutter head gaps of 20-25 wires, and heating and drying at 120 ℃;
Forming an adhesive layer: coating the adhesive layer slurry on the surface of the middle layer, coating cutter head gaps of 20-25 wires, and heating and drying at 120 ℃;
Bonding the bonding layer and the TPU pretreated microfiber base cloth by a heated bonding roller at 180 ℃, and cooling to obtain a polyurethane synthetic leather semi-finished product;
Spraying a water-based silicone oil slip agent LK-511 on the surface of the semi-finished polyurethane synthetic leather, and then drying at 120 ℃ to obtain the finished polyurethane synthetic leather.
The specific compositions of the surface layer, the middle layer and the adhesive layer slurry are shown in table 3.
Table 3 composition of the surface layer, intermediate layer, and adhesive layer slurry in example 3 (parts by weight)
Example 4
This example uses the same implementation as example 2, except that: 14 parts of silicon-hydroxyl group silicone resin SIC 6144F5 and no polytetrafluoroethylene wax are added to the surface layer slurry.
Example 5
The present comparative example uses the same embodiment as in example 2, except that: 14 parts of polyethylene wax powder and silicon resin SIC 6144F5 without silicon-hydroxyl groups are added into the surface layer slurry.
Comparative example 1
The present comparative example uses the same embodiment as in example 2, except that: the base fabric was not pretreated with TPU solution. Other processes and parameters were the same as in example 2.
Comparative example 2
The present comparative example uses the same embodiment as in example 2, except that: the base cloth is not pretreated by TPU solution, the bonding layer and the base cloth are bonded by a conventional semi-dry bonding process in the field, and 80 parts of semi-dry bonding hydrolysis-resistant resin SA-25H is adopted in the bonding layer. Other processes and parameters were the same as in example 2.
The polyurethane synthetic leathers of examples 1 to 5 and comparative examples 1 to 2 were subjected to the relevant performance test, and the results are shown in Table 4.
TABLE 4 polyurethane synthetic leather Performance test results
Note that: the DMF content in Table 4 was determined by gas chromatography;
Flame retardant property-BS 5852 Part 1 0/1 fire source; hydrolysis-resistant-under 70 ℃ x 95% RH in a constant temperature and humidity cabinet.
As can be seen from the test results in Table 4, the DMF content of the polyurethane synthetic leather prepared in the embodiments 1-5 is obviously lower than that of market products, and the polyurethane synthetic leather can be endowed with the performances of wear resistance, scratch resistance, hydrolysis resistance and high flame retardance through adjusting the components in the surface layer, the middle layer and the bonding layer, so that the use requirement of the electronic competition seat is met.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. The preparation method of the polyurethane synthetic leather for the electronic athletic seat is characterized by comprising the following steps of:
Providing a base fabric, carrying out surface pretreatment on the base fabric by adopting a TPU solution, wherein the base fabric is microfiber fabric, the microfiber fabric is non-flame-retardant microfiber fabric, and the softening point of TPU granules in the TPU solution is 130-150 ℃;
Sequentially forming a surface layer, an intermediate layer and a full-dry adhesive layer, wherein the full-dry adhesive layer is obtained by coating the surface of the intermediate layer with full-dry adhesive layer slurry and drying; the full-dry adhesive layer slurry consists of, by weight, 70-90 parts of a double-component full-dry adhesive hydrolysis-resistant resin, 20-40 parts of DMF (dimethyl formamide), 3-6 parts of aluminum hypophosphite, 3-6 parts of a melamine cyanurate compound flame retardant, 2-5 parts of a curing agent and 6-8 parts of pigment color paste;
Attaching TPU pretreated base cloth on the surface of the all-dry adhesive layer at 160-180 ℃, and cooling to obtain polyurethane synthetic leather;
and carrying out surface treatment on the polyurethane synthetic leather to obtain the polyurethane synthetic leather for the electronic athletic seat.
2. The preparation method according to claim 1, wherein the pretreatment process specifically comprises: transferring the TPU solution to the surface of the base cloth through a 80-mesh surface roller, and drying for later use.
3. The process according to claim 2, wherein the TPU solution is obtained from 20 to 30 parts by weight of TPU pellets dissolved in 100 parts by weight DMF.
4. The preparation method of claim 1, wherein the surface layer is obtained by coating surface layer slurry on the surface of release paper and drying; the surface layer slurry consists of, by weight, 70-90 parts of soft polycarbonate polyurethane resin, 40-50 parts of DMF (dimethyl formamide), 5-10 parts of silicon resin containing silicon-hydroxyl groups, 5-10 parts of polytetrafluoroethylene wax, 2-5 parts of a soluble phosphazene flame retardant, 2-5 parts of a curing agent and 6-8 parts of pigment color paste.
5. The preparation method according to claim 1, wherein the intermediate layer is obtained by coating the surface of the surface layer with an intermediate layer slurry and drying; the middle layer slurry consists of, by weight, 70-90 parts of soft high-elasticity high-solid low-viscosity hydrolysis-resistant resin, 40-50 parts of DMF (dimethyl formamide), 3-6 parts of aluminum hypophosphite, 3-6 parts of melamine cyanurate flame retardant, 2-5 parts of curing agent and 6-8 parts of pigment color paste.
6. The method of claim 1, wherein the surface treatment is performed on the polyurethane synthetic leather surface with a hand treating agent.
7. The method of claim 6, wherein the hand treating agent is an aqueous silicone oil type slip agent.
8. The method of manufacturing according to claim 1, wherein the coated bit gap forming the face layer is 15-20 filaments; the gap between the coated cutter heads forming the middle layer is 20-25 filaments; the gap between the coated cutter heads forming the bonding layer is 20-25 wires.
9. A polyurethane synthetic leather for electronic athletic seats, characterized in that it is produced by the production method according to any one of claims 1 to 8.
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