US20180195233A1 - Scald-resistant synthetic leather and preparing method - Google Patents
Scald-resistant synthetic leather and preparing method Download PDFInfo
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- US20180195233A1 US20180195233A1 US15/917,526 US201815917526A US2018195233A1 US 20180195233 A1 US20180195233 A1 US 20180195233A1 US 201815917526 A US201815917526 A US 201815917526A US 2018195233 A1 US2018195233 A1 US 2018195233A1
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- silicone
- polysiloxane
- scald
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- 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
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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- 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
- D06N3/002—Asbestos fibres
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- 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
- D06N3/0022—Glass fibres
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/0045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by applying a ready-made foam layer; obtained by compressing, crinkling or crushing a foam layer, e.g. Kaschierverfahren für Schaumschicht
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- 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
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- 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
- D06N3/0065—Organic pigments, e.g. dyes, brighteners
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- 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
- D06N3/0095—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 inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- D06N2209/00—Properties of the materials
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- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Definitions
- the disclosure relates to a technical field of synthetic leather, and more particularly to a scald-resistant synthetic leather and a preparing method thereof.
- PU polyurethane
- PVC polyvinyl chloride
- PU and PVC synthetic leather further have shortcomings such as aging, temperature sensitiveness, easy hydrolyzation and contamination, etc.
- the scald-resistant synthetic leather and a preparing method are provided.
- the synthetic leather can resist high temperature and scald, and the preparing method is environmentally friendly and harmless to human with the better performance.
- a scald-resistant synthetic leather includes a silicone layer and a high-temperature resistant substrate disposed in sequence.
- a surface of the high-temperature resistant substrate facing away from the silicone layer is disposed with a silicone foam layer.
- the silicone layer, the high-temperature resistant substrate and the silicone foam layer are sequentially composite and connected together.
- the high-temperature resistant substrate is a glass fiber or a carbon fiber.
- a thickness of the silicone layer is 0.2-0.5 mm.
- the silicone layer is prepared by a silicone slurry, ingredients by weight of the silicone slurry are as follows: 45-70 vinyl polysiloxane, 1-10 polysiloxane containing hydrogen, 10-40 filler, 4-10 dyeing slurry, 0.01-1 platinum-group catalyst and 0.001-0.1 retarder.
- the vinyl polysiloxane is a polysiloxane with at least two vinyl groups directly connected to silicon (Si), and the at least two vinyl groups are located at an end of a main chain or a branched chain.
- the polysiloxane containing hydrogen is a polysiloxane with at least three hydrogen atoms directly connected to Si; the at least three hydrogen atoms are located at an end of a main chain or a branched chain of the polysiloxane containing hydrogen, or both ends of the main chain contain the at least three hydrogen atoms directly connected to Si; a mass ratio of the at least three hydrogen atoms in the polysiloxane containing hydrogen is 0.1 ⁇ 1.6%; the polysiloxane containing hydrogen is one or a mixture with more of a linear chained polysiloxane, a branched polysiloxane and an annular polysiloxane.
- the filler is one or a mixture with more of fumed silica, precipitated silica, silicone resin, silicon powders, calcium carbonate, aluminosilicate, diatomite, aluminum oxide, aluminum hydroxide, magnesium hydroxide and titanium dioxide.
- the dyeing slurry is a dyestuff with polysiloxane as a disperse medium.
- the platinum-group catalyst is one or a mixture with more of chloroplatinic acid isopropanol solution, chloroplatinic acid tetrahydrofuran solution, chloroplatinic acid-divinyl tetramethyl disiloxane coordination complex, and chloroplatinic acid-1,3,5,7-tetravinyl-1,3,5,7-tetramethyl-octamethylcyclotetrasiloxane coordination complex.
- a content of platinum (Pt) atoms in the platinum-group catalyst is 100 ⁇ 500000 ppm.
- the retarder is one or a mixture with more of methylbutynol, 1-ethynyl-1-cyclohexanol, maleic acid with an alkynyl group or derivatives thereof, fumaric acid with an alkynyl group or derivatives thereof, polyvinyl polysiloxane, pyridine, unsaturated amides, organic phosphine and sub phosphate ester.
- a preparing method of the scald-resistant synthetic leather includes following steps: step 1, coating and vulcanizating a silicone slurry on release paper for more than one time; step 2, after coating the silicone slurry, attaching the high-temperature resistant substrate and the silicone slurry and sending the attached materials to a drying tunnel for vulcanization to allow fixation of the silicone layer and the high-temperature resistant substrate; step 3, after the vulcanization, peeling the silicone layer and the release paper apart to obtain the scald-resistant synthetic leather.
- a thickness for a single coating is 0.02-3 mm; a total thickness for coating is 0.2-0.5 mm.
- the preparing method further can include: coating the silicone slurry with 0.01-0.1 mm thick evenly on a silicone foam whose thickness is 0.1-5 mm, then attaching the high-temperature resistant substrate to the silicone foam by a surface with the silicone slurry, vulcanizating at 80-180° C. to compose and connect the high-temperature resistant substrate and a silicone foam layer.
- the scald-resistant synthetic leather and a preparing method of the disclosure compared with the prior art, have following advantageous effects.
- the silicone slurry and the high-temperature resistant substrate used in the disclosure both are environmentally friendly and harmless materials.
- the high-temperature resistant substrate provides a fundamental framework, and the silicone slurry is the cover to enable the synthetic leather to own excellent scald resistance, as well as the inherent properties of silicone rubber products such as weathering resistance, contaminating resistance, hydrolyzing resistance, air permeability and the like.
- FIG. 1 is a schematic view of a preparing process of a scald-resistant synthetic leather of an embodiment 1 of the disclosure.
- FIG. 2 is a schematic view of a structure of the embodiment 1.
- 1 is a silicone layer
- 2 is a high-temperature resistant substrate
- 3 is a silicone foam layer.
- a scald-resistant synthetic leather as shown in FIG. 1 , includes a silicone layer 1 and a high-temperature resistant substrate 2 composite and connected together from top to bottom.
- the high-temperature resistant substrate 2 is the glass fiber or the carbon fiber.
- a thickness of the silicone layer 1 is 0.02-5 mm.
- the silicone layer 1 is prepared by the silicone slurry.
- the silicone layer includes following ingredients: vinyl polysiloxane, polysiloxane containing hydrogen, the filler, the dyeing slurry, the platinum-group catalyst, and the retarder.
- the vinyl polysiloxane is the polysiloxane with at least two vinyl groups directly connected to silicon (Si), and the at least two vinyl groups are located at an end of a main chain or a branched chain.
- the embodiment adopts 600 grams vinyl polysiloxane whose viscosity is 5000 est.
- the polysiloxane containing hydrogen is the polysiloxane with at least three hydrogen atoms directly connected to Si.
- the hydrogen atoms are located at a branched chain of an end of a main chain or the polysiloxane containing hydrogen, or both ends of the main chain contain the hydrogen atoms directly connected to Si.
- a content of the hydrogen atoms in the polysiloxane containing hydrogen is 0.1 ⁇ 1.6%; the polysiloxane containing hydrogen is one or a mixture with more of a linear chained polysiloxane, a branched polysiloxane and an annular polysiloxane.
- the embodiment employs 20 grams polysiloxane containing hydrogen with 0.75% hydrogen.
- the filler is one or more of fumed silica, precipitated silica, silicone resin, silicon powders, calcium carbonate, aluminosilicate, diatomite, aluminum oxide, aluminum hydroxide, magnesium hydroxide and titanium dioxide.
- the embodiment adopts 300 grams fumed silica whose specific surface area is 200 m 2 /g.
- the dyeing slurry is an optional additive for producing the synthetic leather with various colors, which is a dyestuff with polysiloxane as a disperse medium, and optimally is polysiloxane containing vinyl groups as the disperse medium.
- the embodiment adopts 70 grams dyeing slurry.
- the platinum-group catalyst is one or more of chloroplatinic acid isopropanol solution, chloroplatinic acid tetrahydrofuran solution, chloroplatinic acid-divinyl tetramethyl disiloxane coordination complex, chloroplatinic acid-1,3,5,7-tetravinyl-1,3,5,7-tetramethyl-octamethylcyclotetrasiloxane coordination complex.
- a content of Pt atoms in the platinum-group catalyst is 100 ⁇ 500000 ppm.
- the embodiment adopts 3 grams chloroplatinic acid isopropanol solution whose Pt content is 3000 ppm.
- the retarder is one or more of methylbutynol, 1-ethynyl-1-cyclohexanol, maleic acid with alkynyl groups or derivatives thereof, fumaric acid with alkynyl groups or derivatives thereof, polyvinyl polysiloxane, pyridine, unsaturated amides, organic phosphine and sub phosphate ester.
- the embodiment adopts 0.2 gram 1-ethynyl-1-cyclohexanol.
- a preparing method of a scald-resistant synthetic leather includes following steps.
- the silicone slurry is coated on the release paper for three times.
- a thickness of a first layer is 0.05 mm; the temperature of heating and vulcanization is 120° C., and the time for heating vulcanization is 5 minutes.
- a second layer is coated, and the thickness thereof is 0.1 mm; the temperature of heating and vulcanization is 120° C., and the time for heating vulcanization is 5 minutes.
- a third layer whose thickness is 0.15 mm is coated.
- the glass fiber is evenly attached to the third layer for heating and vulcanizating at 120° C. for 10 minutes.
- the synthetic leather and the release paper can be separated to obtain the required synthetic leather.
- the release paper can be replaced by the release film.
- the differences between the embodiment and the embodiment 1 are: as shown in FIG. 2 , the silicone layer 1 , the high-temperature resistant substrate 2 and a silicone foam layer 3 sequentially composite and connected together from top to bottom.
- the differences in preparing methods are: coating the silicone slurry whose thickness is 0.1 mm evenly on the silicone foam whose thickness is 0.4 mm, attaching one surface of the glass fiber thereon, heating and vulcanizating at 120° C. for 10 minutes to obtain the required synthetic leather. In vulcanization, the temperature is 80-180° C.
- the differences of the embodiment compared with embodiment 2 are: coating the silicone slurry on the release paper twice; the thickness of first coating is 0.05 mm, the temperature of heating and vulcanization is 120° C., and the time for heating and vulcanization is 5 minutes. Subsequently, a second layer whose thickness is 0.3 mm is coated, and the total thickness is 0.35 mm.
- the differences of the embodiment compared with embodiment 2 are: coating the silicone slurry on the release paper twice; the thickness of first coating is 0.2 mm, the temperature of heating and vulcanization is 120° C., and the time for heating and vulcanization is 5 minutes. Subsequently, a second layer whose thickness is 0.3 mm is coated, and the total thickness is 0.5 mm.
- the differences of the embodiment compared with embodiment 2 are: coating the silicone slurry on the release paper twice; the thickness of first coating is 0.02 mm, the temperature of heating and vulcanization is 120° C., and the time for heating and vulcanization is 5 minutes. Subsequently, a second layer whose thickness is 0.18 mm is coated, and the total thickness is 0.2 mm.
- the differences between the embodiment and the embodiment 2 are ingredients by weight of the silicone slurry as follows: 450 grams vinyl polysiloxane, 10 grams polysiloxane containing hydrogen, 400 grams filler, 100 grams dyeing slurry, 10 grams platinum-group catalyst and 1 gram retarder.
- the differences between the embodiment and the embodiment 2 are ingredients by weight of the silicone slurry as follows: 700 grams vinyl polysiloxane, 100 grains polysiloxane containing hydrogen, 100 grams filler, 40 grains dyeing slurry, 0.1 grams platinum-group catalyst (300000) and 0.01 gram retarder.
- the difference between the embodiment and the embodiment 1 is: replacing the glass fiber with microfiber cloth whose thickness is 0.8 mm.
- the difference between the embodiment and the embodiment 1 is: replacing the silicone slurry with PU slurry containing 25% solids.
- Embodiment Almost no influence on surface Thin and thorny 1 Embodiment Almost no influence on surface Plump and soft 2 Embodiment Almost no influence on surface Plump and soft 3 Embodiment Almost no influence on surface Plump and soft 4 Embodiment Almost no influence on surface Plump and soft 5 Embodiment Almost no influence on surface Plump and soft 6 Embodiment Almost no influence on surface Plump and soft 7 Comparative No damage on surface, but the surface Plump and soft example 1 is concave, the rear microfiber is scorched Comparative PU layer on the surface is scorched; no Thin and thorny example 2 difference on the rear
- the synthetic leather prepared by the method provided by the disclosure in the embodiments 1-7 have superior scald resistance, which can be adaptive for leather in daily application of home and the public.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
Description
- The disclosure relates to a technical field of synthetic leather, and more particularly to a scald-resistant synthetic leather and a preparing method thereof.
- Nowadays, polyurethane (PU) and polyvinyl chloride (PVC) are primary in the synthetic leather industry around the world, which release a large amount of harmful substances such as dimethylformamide, butanone, methylbenzene and the like both in production and usage; recycling and processing the waste thereof will generates decomposed products such as hydrogen chloride, dioxin, hydrogen cyanide and the like to harm the environment and creatures.
- PU and PVC synthetic leather further have shortcomings such as aging, temperature sensitiveness, easy hydrolyzation and contamination, etc.
- Aiming at the problem above, the scald-resistant synthetic leather and a preparing method are provided. The synthetic leather can resist high temperature and scald, and the preparing method is environmentally friendly and harmless to human with the better performance.
- A technical solution provided by the disclosure to solve the technical problem above is as follows.
- A scald-resistant synthetic leather includes a silicone layer and a high-temperature resistant substrate disposed in sequence.
- Preferably, a surface of the high-temperature resistant substrate facing away from the silicone layer is disposed with a silicone foam layer.
- Preferably, the silicone layer, the high-temperature resistant substrate and the silicone foam layer are sequentially composite and connected together.
- Preferably, the high-temperature resistant substrate is a glass fiber or a carbon fiber.
- Preferably, a thickness of the silicone layer is 0.2-0.5 mm.
- Preferably, the silicone layer is prepared by a silicone slurry, ingredients by weight of the silicone slurry are as follows: 45-70 vinyl polysiloxane, 1-10 polysiloxane containing hydrogen, 10-40 filler, 4-10 dyeing slurry, 0.01-1 platinum-group catalyst and 0.001-0.1 retarder.
- The vinyl polysiloxane is a polysiloxane with at least two vinyl groups directly connected to silicon (Si), and the at least two vinyl groups are located at an end of a main chain or a branched chain.
- The polysiloxane containing hydrogen is a polysiloxane with at least three hydrogen atoms directly connected to Si; the at least three hydrogen atoms are located at an end of a main chain or a branched chain of the polysiloxane containing hydrogen, or both ends of the main chain contain the at least three hydrogen atoms directly connected to Si; a mass ratio of the at least three hydrogen atoms in the polysiloxane containing hydrogen is 0.1˜1.6%; the polysiloxane containing hydrogen is one or a mixture with more of a linear chained polysiloxane, a branched polysiloxane and an annular polysiloxane.
- The filler is one or a mixture with more of fumed silica, precipitated silica, silicone resin, silicon powders, calcium carbonate, aluminosilicate, diatomite, aluminum oxide, aluminum hydroxide, magnesium hydroxide and titanium dioxide.
- The dyeing slurry is a dyestuff with polysiloxane as a disperse medium.
- The platinum-group catalyst is one or a mixture with more of chloroplatinic acid isopropanol solution, chloroplatinic acid tetrahydrofuran solution, chloroplatinic acid-divinyl tetramethyl disiloxane coordination complex, and chloroplatinic acid-1,3,5,7-tetravinyl-1,3,5,7-tetramethyl-octamethylcyclotetrasiloxane coordination complex. A content of platinum (Pt) atoms in the platinum-group catalyst is 100˜500000 ppm.
- The retarder is one or a mixture with more of methylbutynol, 1-ethynyl-1-cyclohexanol, maleic acid with an alkynyl group or derivatives thereof, fumaric acid with an alkynyl group or derivatives thereof, polyvinyl polysiloxane, pyridine, unsaturated amides, organic phosphine and sub phosphate ester.
- A preparing method of the scald-resistant synthetic leather includes following steps:
step 1, coating and vulcanizating a silicone slurry on release paper for more than one time;step 2, after coating the silicone slurry, attaching the high-temperature resistant substrate and the silicone slurry and sending the attached materials to a drying tunnel for vulcanization to allow fixation of the silicone layer and the high-temperature resistant substrate; step 3, after the vulcanization, peeling the silicone layer and the release paper apart to obtain the scald-resistant synthetic leather. - A thickness for a single coating is 0.02-3 mm; a total thickness for coating is 0.2-0.5 mm.
- The preparing method further can include: coating the silicone slurry with 0.01-0.1 mm thick evenly on a silicone foam whose thickness is 0.1-5 mm, then attaching the high-temperature resistant substrate to the silicone foam by a surface with the silicone slurry, vulcanizating at 80-180° C. to compose and connect the high-temperature resistant substrate and a silicone foam layer.
- The scald-resistant synthetic leather and a preparing method of the disclosure, compared with the prior art, have following advantageous effects.
- The silicone slurry and the high-temperature resistant substrate used in the disclosure both are environmentally friendly and harmless materials. The high-temperature resistant substrate provides a fundamental framework, and the silicone slurry is the cover to enable the synthetic leather to own excellent scald resistance, as well as the inherent properties of silicone rubber products such as weathering resistance, contaminating resistance, hydrolyzing resistance, air permeability and the like.
-
FIG. 1 is a schematic view of a preparing process of a scald-resistant synthetic leather of anembodiment 1 of the disclosure. -
FIG. 2 is a schematic view of a structure of theembodiment 1. - 1 is a silicone layer, 2 is a high-temperature resistant substrate, and 3 is a silicone foam layer.
- The accompanying drawing unrestrictedly discloses a structural schematic view of a preferred embodiment of the disclosure, and the technical solution of the disclosure will be illustrated in detail with reference to the accompanying drawing as follows.
- A scald-resistant synthetic leather, as shown in
FIG. 1 , includes asilicone layer 1 and a high-temperatureresistant substrate 2 composite and connected together from top to bottom. The high-temperatureresistant substrate 2 is the glass fiber or the carbon fiber. A thickness of thesilicone layer 1 is 0.02-5 mm. - The
silicone layer 1 is prepared by the silicone slurry. The silicone layer includes following ingredients: vinyl polysiloxane, polysiloxane containing hydrogen, the filler, the dyeing slurry, the platinum-group catalyst, and the retarder. - The vinyl polysiloxane is the polysiloxane with at least two vinyl groups directly connected to silicon (Si), and the at least two vinyl groups are located at an end of a main chain or a branched chain. The embodiment adopts 600 grams vinyl polysiloxane whose viscosity is 5000 est.
- The polysiloxane containing hydrogen is the polysiloxane with at least three hydrogen atoms directly connected to Si. The hydrogen atoms are located at a branched chain of an end of a main chain or the polysiloxane containing hydrogen, or both ends of the main chain contain the hydrogen atoms directly connected to Si. A content of the hydrogen atoms in the polysiloxane containing hydrogen is 0.1˜1.6%; the polysiloxane containing hydrogen is one or a mixture with more of a linear chained polysiloxane, a branched polysiloxane and an annular polysiloxane. The embodiment employs 20 grams polysiloxane containing hydrogen with 0.75% hydrogen.
- The filler is one or more of fumed silica, precipitated silica, silicone resin, silicon powders, calcium carbonate, aluminosilicate, diatomite, aluminum oxide, aluminum hydroxide, magnesium hydroxide and titanium dioxide. The embodiment adopts 300 grams fumed silica whose specific surface area is 200 m2/g.
- The dyeing slurry is an optional additive for producing the synthetic leather with various colors, which is a dyestuff with polysiloxane as a disperse medium, and optimally is polysiloxane containing vinyl groups as the disperse medium. The embodiment adopts 70 grams dyeing slurry.
- The platinum-group catalyst is one or more of chloroplatinic acid isopropanol solution, chloroplatinic acid tetrahydrofuran solution, chloroplatinic acid-divinyl tetramethyl disiloxane coordination complex, chloroplatinic acid-1,3,5,7-tetravinyl-1,3,5,7-tetramethyl-octamethylcyclotetrasiloxane coordination complex. A content of Pt atoms in the platinum-group catalyst is 100˜500000 ppm. The embodiment adopts 3 grams chloroplatinic acid isopropanol solution whose Pt content is 3000 ppm.
- The retarder is one or more of methylbutynol, 1-ethynyl-1-cyclohexanol, maleic acid with alkynyl groups or derivatives thereof, fumaric acid with alkynyl groups or derivatives thereof, polyvinyl polysiloxane, pyridine, unsaturated amides, organic phosphine and sub phosphate ester. The embodiment adopts 0.2 gram 1-ethynyl-1-cyclohexanol.
- A preparing method of a scald-resistant synthetic leather includes following steps.
- The silicone slurry is coated on the release paper for three times. A thickness of a first layer is 0.05 mm; the temperature of heating and vulcanization is 120° C., and the time for heating vulcanization is 5 minutes. Subsequently, a second layer is coated, and the thickness thereof is 0.1 mm; the temperature of heating and vulcanization is 120° C., and the time for heating vulcanization is 5 minutes. Then, a third layer whose thickness is 0.15 mm is coated. The glass fiber is evenly attached to the third layer for heating and vulcanizating at 120° C. for 10 minutes. The synthetic leather and the release paper can be separated to obtain the required synthetic leather. The release paper can be replaced by the release film.
- The differences between the embodiment and the
embodiment 1 are: as shown inFIG. 2 , thesilicone layer 1, the high-temperatureresistant substrate 2 and a silicone foam layer 3 sequentially composite and connected together from top to bottom. - The differences in preparing methods are: coating the silicone slurry whose thickness is 0.1 mm evenly on the silicone foam whose thickness is 0.4 mm, attaching one surface of the glass fiber thereon, heating and vulcanizating at 120° C. for 10 minutes to obtain the required synthetic leather. In vulcanization, the temperature is 80-180° C.
- The differences of the embodiment compared with
embodiment 2 are: coating the silicone slurry on the release paper twice; the thickness of first coating is 0.05 mm, the temperature of heating and vulcanization is 120° C., and the time for heating and vulcanization is 5 minutes. Subsequently, a second layer whose thickness is 0.3 mm is coated, and the total thickness is 0.35 mm. - The differences of the embodiment compared with
embodiment 2 are: coating the silicone slurry on the release paper twice; the thickness of first coating is 0.2 mm, the temperature of heating and vulcanization is 120° C., and the time for heating and vulcanization is 5 minutes. Subsequently, a second layer whose thickness is 0.3 mm is coated, and the total thickness is 0.5 mm. - The differences of the embodiment compared with
embodiment 2 are: coating the silicone slurry on the release paper twice; the thickness of first coating is 0.02 mm, the temperature of heating and vulcanization is 120° C., and the time for heating and vulcanization is 5 minutes. Subsequently, a second layer whose thickness is 0.18 mm is coated, and the total thickness is 0.2 mm. - The differences between the embodiment and the
embodiment 2 are ingredients by weight of the silicone slurry as follows: 450 grams vinyl polysiloxane, 10 grams polysiloxane containing hydrogen, 400 grams filler, 100 grams dyeing slurry, 10 grams platinum-group catalyst and 1 gram retarder. - The differences between the embodiment and the
embodiment 2 are ingredients by weight of the silicone slurry as follows: 700 grams vinyl polysiloxane, 100 grains polysiloxane containing hydrogen, 100 grams filler, 40 grains dyeing slurry, 0.1 grams platinum-group catalyst (300000) and 0.01 gram retarder. - The difference between the embodiment and the
embodiment 1 is: replacing the glass fiber with microfiber cloth whose thickness is 0.8 mm. - The difference between the embodiment and the
embodiment 1 is: replacing the silicone slurry with PU slurry containing 25% solids. - The results of comparing properties of the synthetic leather obtained in embodiments 1-6 and the comparative examples 1 and 2 are shown in the following table.
-
Project Scalding by tobacco for 5 minutes Touch Embodiment Almost no influence on surface Thin and thorny 1 Embodiment Almost no influence on surface Plump and soft 2 Embodiment Almost no influence on surface Plump and soft 3 Embodiment Almost no influence on surface Plump and soft 4 Embodiment Almost no influence on surface Plump and soft 5 Embodiment Almost no influence on surface Plump and soft 6 Embodiment Almost no influence on surface Plump and soft 7 Comparative No damage on surface, but the surface Plump and soft example 1 is concave, the rear microfiber is scorched Comparative PU layer on the surface is scorched; no Thin and thorny example 2 difference on the rear - The synthetic leather prepared by the method provided by the disclosure in the embodiments 1-7 have superior scald resistance, which can be adaptive for leather in daily application of home and the public.
- The preferred embodiments illustrated with reference to the accompanying drawing above purely are for depicting the disclosure rather than limiting the objective of the disclosure or contents of the claims. Any simple modification and equivalents obtained according to the disclosure should be included in the protective scope of the disclosure.
Claims (8)
Applications Claiming Priority (3)
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CN201610146739.2A CN105603768A (en) | 2016-03-15 | 2016-03-15 | Burn-resistant synthetic leather and production method |
CN201610146739.2 | 2016-03-15 | ||
PCT/CN2016/105894 WO2017157035A1 (en) | 2016-03-15 | 2016-11-15 | Scald-proof synthetic leather and manufacturing method |
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PCT/CN2016/105894 Continuation WO2017157035A1 (en) | 2016-03-15 | 2016-11-15 | Scald-proof synthetic leather and manufacturing method |
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Cited By (2)
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CN111058302A (en) * | 2019-12-31 | 2020-04-24 | 福建隆上超纤有限公司 | Polymer thermal insulation silica gel synthetic leather and preparation method thereof |
CN117552243A (en) * | 2024-01-11 | 2024-02-13 | 吴江市汉塔纺织整理有限公司 | Preparation method of anti-scalding fabric |
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CN105603768A (en) * | 2016-03-15 | 2016-05-25 | 惠州赛力珑新材料有限公司 | Burn-resistant synthetic leather and production method |
CN108203885A (en) * | 2017-12-28 | 2018-06-26 | 凤阳加松新型材料科技有限公司 | A kind of preparation method of heat-resistant, high strength degree macromolecule silicon materials synthetic leather |
CN108203881A (en) * | 2018-01-10 | 2018-06-26 | 广东天跃新材料股份有限公司 | A kind of the silicon rubber leather and its coating process of resistance to complications |
CN108130750A (en) * | 2018-01-10 | 2018-06-08 | 广东天跃新材料股份有限公司 | The silicon rubber leather and its coating process of a kind of halogen-free flameproof |
CN108034259A (en) * | 2018-01-10 | 2018-05-15 | 广东天跃新材料股份有限公司 | The silicon rubber leather and its coating process of a kind of good air permeability |
CN110776686A (en) * | 2019-11-12 | 2020-02-11 | 东莞市米儿塑胶原料有限公司 | Flame-retardant plastic particle |
CN111809402B (en) * | 2020-07-13 | 2021-09-21 | 四川大学 | Preparation method of cyano-modified organic silicon synthetic leather coating |
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- 2016-11-15 WO PCT/CN2016/105894 patent/WO2017157035A1/en active Application Filing
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CN105603768A (en) | 2016-05-25 |
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