CN114763677A - Imitation leather and preparation method and application thereof - Google Patents

Imitation leather and preparation method and application thereof Download PDF

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Publication number
CN114763677A
CN114763677A CN202110042187.1A CN202110042187A CN114763677A CN 114763677 A CN114763677 A CN 114763677A CN 202110042187 A CN202110042187 A CN 202110042187A CN 114763677 A CN114763677 A CN 114763677A
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China
Prior art keywords
layer
foaming
imitation leather
parts
leather
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CN202110042187.1A
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Inventor
万虎
冯先强
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
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Priority to CN202110042187.1A priority Critical patent/CN114763677A/en
Publication of CN114763677A publication Critical patent/CN114763677A/en
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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
    • D06N3/12—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
    • D06N3/0043—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
    • D06N3/005—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 blowing or swelling agent
    • 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
    • D06N3/0095—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
    • 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
    • D06N2209/14—Properties of the materials having chemical properties
    • D06N2209/142—Hydrophobic
    • 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
    • D06N2209/14—Properties of the materials having chemical properties
    • D06N2209/143—Inert, i.e. inert to chemical degradation, corrosion resistant
    • 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
    • D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

Abstract

The invention provides imitation leather which sequentially comprises a base cloth layer, a foaming layer and a surface layer from bottom to top; the foaming layer covers one surface of the base cloth layer, and the surface layer covers the foaming layer; the surface layer comprises a surface layer sizing material and an antibacterial agent; the surface sizing material is organic silicon resin. One Si in the molecule of the organic silicon resin corresponds to 3-CH3The arrangement of the foaming layer enables the leather to have hydrophobicity, can prevent moisture from further penetrating, enables the surface of the imitation leather to keep dry in the long-term use process, and the surface layer completely covers the foaming layer, seals through holes generated in the processing process of the foaming layer, prevents the moisture from permeating into the foaming layer, enables the imitation leather to have excellent effects of moisture resistance, surface hydrophobicity and the like, and can solve or delay the problems of leather degumming, surface foaming, leather grain cracking and the like; the organic silicon resin takes siloxane bonds as a framework, so that the organic silicon resin has good thermal stability, has the advantages of weather resistance, solvent resistance and the like, and can be used for preparing a coating for a printed circuit boardThe use performance of the imitation leather is improved.

Description

Imitation leather and preparation method and application thereof
Technical Field
The invention belongs to the technical field of modified leather, and particularly relates to imitation leather as well as a preparation method and application thereof.
Background
The imitation leather is an artificial material product similar to genuine leather in appearance and touch, and is widely applied based on rapid increase of market demand and promotion of consciousness of people on animal protection. In the field of consumer electronics, the use of imitation leather has led to a new round of design tide, such as imitation leather-like mobile phone back covers, sound enclosures, etc.
The imitation leather not only meets the design requirements, but also meets certain functional requirements. The quality of life of consumers is gradually improved at present, the antibacterial requirement of daily used products is stronger and stronger, and the imitation leather with antibacterial performance has great market prospect. The flat electronic products are easy to breed and transfer bacteria when being contacted with hands of people for a long time in the using process, so that the flat shell material is required to have excellent antibacterial performance. In addition, the application scenes of the imitation leather are rich, the difference of the use environments is large, and especially in the harsh environments of humidity, high temperature, high humidity and the like in the house life, the degumming, the surface foaming, the grain cracking and the like of the imitation leather become the common aging problems of the imitation leather material. According to market research, the imitation leather material with the antibacterial function, the moisture-proof performance and the surface hydrophobic performance is fresh and has great significance in the research work in the field.
Disclosure of Invention
The embodiment of the invention provides imitation leather which has good hydrophobic property, moisture resistance and antibacterial property, good thermal stability, weather resistance, solvent resistance and other advantages, and the service performance of the imitation leather is improved.
The embodiment of the invention is realized by the following technical scheme: an imitation leather comprises a base cloth layer, a foaming layer and a surface layer from top to bottom in sequence; the foaming layer covers one surface of the base cloth layer, and the surface layer covers the foaming layer; the surface layer comprises a surface layer sizing material and an antibacterial agent; the surface layer sizing material is organic silicon resin.
According to the imitation leather provided by the embodiment of the invention, the surface sizing material is organic silicon resin and has hydrophobicity, and one Si in a molecule corresponds to 3-CH3The surface layer completely covers the foaming layer, through holes generated in the processing process of the foaming layer are sealed, the moisture is further prevented from permeating into the foaming layer, the imitation leather has an excellent moisture-proof effect, and the imitation leather can effectively achieve the moisture-proof effect The problems of leather glue failure, surface blistering, leather grain cracking and the like are solved or delayed; and secondly, the organic silicon resin takes siloxane bonds as a framework, so that the organic silicon resin has good thermal stability, has the advantages of weather resistance, solvent resistance and the like, and greatly improves the service performance of the imitation leather.
Furthermore, the organic silicon resin is modified organic silicon resin, so that the aging resistance of the imitation leather can be enhanced.
The base cloth layer is arranged on the base cloth layer, and the base cloth layer is arranged on the base cloth layer. After the release film is uncovered, the imitated leather can be stuck to a use position through the adhesive layer to form the leather appearance, and the use is convenient.
Further, the skin layer also includes a skin layer plasticizer, an antioxidant, and a colorant. The surface layer is formed into a leather appearance by processing using a surface layer plasticizer, an antioxidant and a colorant.
Further, the surface layer comprises 50-600 parts by weight of surface layer rubber material, 0.1-5 parts by weight of antibacterial agent, 1-5 parts by weight of surface layer plasticizer, 0.1-6 parts by weight of antioxidant and 0-3 parts by weight of colorant, and the service performance of the imitation leather is enhanced through reasonable proportion.
Further, the foaming layer comprises a foaming layer rubber material, a chemical foaming agent and a foaming layer plasticizer, and resilience and soft touch feeling are formed through the foaming layer.
Further, the foaming layer sizing material comprises at least one of polyethylene, polyvinyl chloride, polyurethane or organic silicon resin; the chemical foaming agent comprises at least one of azo compounds, sulfonyl hydrazine compounds and nitroso compounds; the foaming layer plasticizer comprises at least one of di (2-ethylhexyl) phthalate, butylene phthalate and dibutyl phthalate. This is a specific embodiment, and a better leather-like soft touch is formed by foaming.
Further, the foaming layer comprises 50-600 parts by weight of foaming layer rubber material, 3-15 parts by weight of chemical foaming agent and 1-5 parts by weight of foaming layer plasticizer, and the foaming effect of the imitation leather is enhanced through proper proportion.
The embodiment of the invention also provides a preparation method of the imitation leather, which comprises the following steps: s1: pretreating the base cloth layer; preparing slurry of a foaming layer and slurry of a surface layer; s2: coating the slurry of the foaming layer on one surface of the base cloth layer, and heating and foaming; s3: coating the surface layer slurry on the surface of the foaming layer, heating and plasticizing, and performing post-treatment; s4: and coating the bonding layer on the other surface of the base cloth layer, and coating a release film on the surface of the bonding layer.
According to the preparation method of the imitation leather provided by the embodiment of the invention, the imitation leather comprising the base cloth layer, the foaming layer, the surface layer, the adhesive layer and the release film is prepared, and the imitation leather has antibacterial performance, soft touch and moisture resistance.
The embodiment of the invention also provides application of the imitation leather in the field of electronic product shells. Because the imitation leather has excellent moisture resistance and antibacterial property, has soft touch and appearance visual effect similar to natural leather, has good comprehensive use performance, is suitable for environments of humidity, high temperature, high humidity and the like, and can be applied to the field of electronic product shells.
For a better understanding and practice, the following examples are presented to illustrate the present invention.
Detailed Description
The embodiment of the invention provides imitation leather which sequentially comprises a base cloth layer, a foaming layer and a surface layer from bottom to top; the foaming layer covers one surface of the base cloth layer, and the surface layer covers the foaming layer; the surface layer comprises a surface layer sizing material and an antibacterial agent; the surface sizing material is organic silicon resin.
According to the imitation leather provided by the embodiment of the invention, the surface sizing material is organic silicon resin, the surface sizing material has hydrophobicity, and one Si in a molecule corresponds to 3-CH 3Is arranged to have hydrophobicity and weak water absorption after film formation, and is rapidly released to be restored to its original shape even if moisture is absorbed, so that it is possible to prevent moisture from penetrating further, to keep the surface of the imitation leather dry during long-term use, and to keep the surface layer dryThe imitation leather completely covers the foaming layer, so that through holes generated in the processing process of the foaming layer are sealed, moisture is prevented from permeating into the foaming layer, the imitation leather has excellent effects of moisture prevention, surface hydrophobicity and the like, and the problems of leather glue failure, surface foaming, leather grain cracking and the like can be effectively solved or delayed; and secondly, the organic silicon resin takes siloxane bonds as a framework, so that the organic silicon resin has good thermal stability, has the advantages of weather resistance, solvent resistance and the like, and greatly improves the service performance of the imitation leather.
Preferably, the organic silicon resin is modified organic silicon resin, so that the ageing resistance of the imitation leather can be enhanced.
The base cloth layer comprises at least one of woven cloth, knitted cloth, non-woven cloth and laminated cloth.
The foaming layer comprises a foaming layer rubber material, a chemical foaming agent and a foaming layer plasticizer, and resilience and soft touch feeling are formed through the foaming layer.
The foaming layer sizing material comprises at least one of polyethylene, polyvinyl chloride, polyurethane and organic silicon resin, wherein when the foaming layer sizing material is organic silicon resin, the modified organic silicon resin is preferably used for enhancing the ageing resistance; the chemical foaming agent comprises at least one of azo compounds, sulfonyl hydrazide compounds and nitroso compounds; the foaming layer plasticizer comprises at least one of di (2-ethylhexyl) phthalate, butylene phthalate and dibutyl phthalate. This is a specific embodiment, and a better leather-like soft touch is created by foaming.
The foaming layer comprises 50-600 parts by weight of foaming layer rubber material, 3-15 parts by weight of chemical foaming agent and 1-5 parts by weight of foaming layer plasticizer, and the foaming effect of the imitation leather is enhanced through proper proportion.
The skin layer further comprises a skin layer plasticizer, an antioxidant and a colorant; the antibacterial agent includes at least one of an inorganic antibacterial agent, an organic antibacterial agent or a natural antibacterial agent. The surface layer is processed by using a surface layer plasticizer, an antioxidant and a coloring agent to form the appearance of leather and has an antibacterial effect.
The surface layer comprises 50-600 parts of surface layer rubber material, 0.1-5 parts of antibacterial agent, 1-5 parts of surface layer plasticizer, 0.1-6 parts of antioxidant and 0-3 parts of colorant by weight, and the use performance of the imitation leather is enhanced by reasonable proportion.
The antibacterial agent includes at least one of an inorganic antibacterial agent, an organic antibacterial agent or a natural antibacterial agent. The inorganic antibacterial agent is prepared by loading at least one metal ion of silver, zinc, copper and the like on phosphate or silicate or soluble glass carrier. The organic antibacterial agent comprises at least one of quaternary ammonium salt, organic metal and pyrrole. The natural antibacterial agent comprises at least one of chitosan and derivatives thereof, and chitin.
The surface layer plasticizer comprises at least one of di (2-ethylhexyl) phthalate, dibutyl phthalate and diethyl phthalate.
The antioxidant comprises at least one of a main antioxidant 1010, a main antioxidant 1076, a main antioxidant 245, an auxiliary antioxidant 168, an auxiliary antioxidant PEP36 or other hindered phenol antioxidants and phosphite auxiliary antioxidants.
The imitation leather further comprises a release film and a bonding layer, the bonding layer covers the other side of the base cloth layer, and the release film covers the bonding layer. After the release film is uncovered, the imitated leather can be stuck to a use position through the adhesive layer to form the leather appearance, and the use is convenient. The bonding layer is made of at least one of acrylic, polyurethane and epoxy resin to realize the bonding function.
The embodiment of the invention also provides a preparation method of the imitation leather, which comprises the following steps:
s1: pretreating the base cloth layer; preparing slurry of a foaming layer and slurry of a surface layer; the surface sizing agent comprises a surface sizing agent and an antibacterial agent;
s2: coating the slurry of the foaming layer on one surface of the base cloth layer, and heating and foaming;
s3: coating the surface layer slurry on the surface of the foaming layer, heating and plasticizing, and then carrying out post-treatment;
s4: and coating the bonding layer on the other surface of the base cloth layer, and coating a release film on the surface of the bonding layer.
Specifically, the preparation method of the imitation leather comprises the following steps:
s1: rinsing the base cloth layer material, and drying; preparing slurry of a foaming layer, and uniformly mixing a foaming agent rubber material, a chemical foaming agent and a plasticizer in limited parts by weight for later use; preparing surface sizing agent, and uniformly mixing the surface sizing agent, the antibacterial agent, the plasticizer, the antioxidant and the colorant in limited parts by weight for later use;
s2: uniformly coating the slurry of the foaming layer on one surface of the base cloth layer, flowing through a macro-channel foaming section, and heating and foaming;
s3: uniformly coating the surface layer slurry on the surface of the foaming layer, heating and plasticizing, performing rolling embossing treatment, and cooling;
S4: and coating the other side of the base cloth layer with an adhesive, and coating a release film on the surface of the adhesive layer to obtain the imitation leather.
The embodiment of the invention also provides application of the imitation leather in the field of electronic product shells. Because the imitation leather has excellent moisture resistance and antibacterial property, has soft touch and appearance visual effect similar to natural leather, has good comprehensive use performance, can adapt to environments of humidity, high temperature, high humidity and the like, and can be applied to the field of electronic product shells.
Example 1
This embodiment 1 provides an imitation leather, imitation leather from the bottom up includes in proper order from type membrane, adhesive linkage, base cloth layer, foaming layer and top layer.
The adhesive layer is made of acrylic glue.
The base cloth layer is made of non-woven fabric.
The foaming layer comprises 300 parts by weight of polyurethane, 5 parts by weight of diisopropyl azodicarboxylate and 3 parts by weight of dibutyl phthalate.
The surface layer comprises 200 parts by weight of modified organic silicon resin, 3 parts by weight of silver/zinc compound antibacterial agent, 2 parts by weight of dibutyl phthalate, 1 part by weight of 1010/168 antioxidant and 0.5 part by weight of colorant.
The simulated leather of example 1 was prepared as follows:
S1: rinsing and drying the non-woven fabric material to obtain a base fabric layer;
s2: preparing foaming layer slurry, and uniformly mixing 300 parts by weight of polyurethane, 5 parts by weight of azo foaming agent diisopropyl azodicarboxylate and 3 parts by weight of dibutyl phthalate plasticizer according to the limited parts by weight in the formula for later use;
s3: uniformly coating the slurry of the foaming layer prepared in the S2 on the base fabric layer, flowing through a drying tunnel type foaming section, and heating and foaming;
s4: preparing slurry of a surface layer, and uniformly mixing 200 parts by weight of modified organic silicon resin, 3 parts by weight of silver/zinc compound antibacterial agent, 2 parts by weight of dibutyl phthalate plasticizer, 1 part by weight of 1010/168 antioxidant and 0.5 part by weight of coloring agent according to the limited parts by weight in the formula for later use;
s5: uniformly coating the surface layer slurry obtained in the step S4 on the surface of the foaming layer obtained in the step S3, heating and plasticizing, performing rolling embossing treatment, and cooling;
s6: an acrylic adhesive layer was coated on the surface of the antibacterial leather base cloth obtained in S5, and a release film was coated on the surface of the adhesive layer to obtain a leather-like imitation.
Example 2
This embodiment 2 provides an imitation leather, imitation leather from the bottom up includes in proper order from type membrane, adhesive linkage, base cloth layer, foaming layer and top layer.
The bonding layer is epoxy glue.
The base cloth layer is made of non-woven fabric.
The foaming layer comprises 250 parts by weight of polyvinyl chloride, 7 parts by weight of dimethyl azodicarboxylate and 3 parts by weight of dibutyl phthalate.
The surface layer comprises 300 parts by weight of modified organic silicon resin, 2 parts by weight of quaternary ammonium salt organic antibacterial agent, 3 parts by weight of dibutyl phthalate plasticizer, 0.5 part by weight of 1010/168 antioxidant and 1 part by weight of coloring agent.
The simulated leather of this example 2 was prepared as follows:
s1: rinsing and drying the non-woven fabric material to obtain a base fabric layer;
s2: preparing foaming layer slurry, and uniformly mixing 250 parts by weight of polyvinyl chloride, 7 parts by weight of azo foaming agent diethyl azodicarboxylate and 2 parts by weight of diethyl phthalate plasticizer according to the limited parts by weight in the formula for later use;
s3: uniformly coating the slurry of the foaming layer prepared in the S2 on the base fabric layer, flowing through a drying tunnel type foaming section, and heating and foaming;
s4: preparing slurry of a surface layer, and uniformly mixing 300 parts by weight of modified organic silicon resin, 2 parts by weight of quaternary ammonium salt organic antibacterial agent, 3 parts by weight of dibutyl phthalate plasticizer, 0.5 part by weight of 1010/168 antioxidant and 1 part by weight of coloring agent according to the limited parts by weight in the formula for later use;
S5: uniformly coating the surface layer slurry obtained in the step S4 on the surface of the foaming layer obtained in the step S3, heating and plasticizing, performing rolling embossing treatment, and cooling;
s6: an acrylic adhesive layer was coated on the surface of the antibacterial leather base cloth obtained in S5, and a release film was coated on the surface of the adhesive layer to obtain a leather-like imitation.
Example 3
This embodiment 3 provides an imitation leather, imitation leather from the bottom up includes in proper order from type membrane, adhesive linkage, base cloth layer, foaming layer and top layer.
The adhesive layer is made of acrylic glue.
The base cloth layer is made of knitted fabric.
The foaming layer comprises 50 parts by weight of polyethylene, 3 parts by weight of diisopropyl azodicarboxylate and 1 part by weight of dibutyl phthalate.
The surface layer comprises 50 parts by weight of modified organic silicon resin, 0.1 part by weight of silver/zinc compound antibacterial agent, 1 part by weight of dibutyl phthalate, 0.1 part by weight of 1010/168 antioxidant and 3 parts by weight of colorant.
The simulated leather of example 3 was prepared as follows:
s1: rinsing and drying the knitted fabric to be used as a base fabric layer;
s2: preparing foaming layer slurry, and uniformly mixing 50 parts by weight of polyethylene, 3 parts by weight of diisopropyl azodicarboxylate and 1 part by weight of dibutyl phthalate according to the limited parts by weight in the formula for later use;
S3: uniformly coating the slurry of the foaming layer prepared in the S2 on the base fabric layer, flowing through a drying tunnel type foaming section, and heating and foaming;
s4: preparing slurry of a surface layer, and uniformly mixing 50 parts by weight of modified organic silicon resin, 0.1 part by weight of silver/zinc compound antibacterial agent, 1 part by weight of dibutyl phthalate, 0.1 part by weight of 1010/168 antioxidant and 3 parts by weight of colorant according to the limited parts by weight in the formula for later use;
s5: uniformly coating the surface layer slurry obtained in the step S4 on the surface of the foaming layer obtained in the step S3, heating and plasticizing, performing rolling embossing treatment, and cooling;
s6: an acrylic adhesive layer was applied to the surface of the antibacterial leather base fabric obtained in S5, and a release film was applied to the surface of the adhesive layer to obtain an imitation leather.
Example 4
This embodiment 4 provides an imitation leather, imitation leather from the bottom up includes in proper order from type membrane, adhesive linkage, base cloth layer, foaming layer and top layer.
The adhesive layer is made of acrylic glue.
The base cloth layer is made of laminated cloth.
The foaming layer comprises 600 parts by weight of modified organic silicon resin, 15 parts by weight of diisopropyl azodicarboxylate and 5 parts by weight of dibutyl phthalate.
The surface layer comprises 600 parts by weight of modified organic silicon resin, 5 parts by weight of silver/zinc compound antibacterial agent, 5 parts by weight of dibutyl phthalate and 6 parts by weight of 1010/168 antioxidant.
The simulated leather of example 4 was prepared as follows:
s1: rinsing and drying the laminated cloth to be used as a base cloth layer;
s2: preparing foaming layer slurry, and uniformly mixing 600 parts by weight of modified organic silicon resin, 15 parts by weight of diisopropyl azodicarboxylate and 5 parts by weight of dibutyl phthalate according to the limited parts by weight in the formula for later use;
s3: uniformly coating the slurry of the foaming layer prepared in the S2 on the base fabric layer, flowing through a drying tunnel type foaming section, and heating and foaming;
s4: preparing slurry of a surface layer, and uniformly mixing 600 parts by weight of modified organic silicon resin, 5 parts by weight of silver/zinc compound antibacterial agent, 5 parts by weight of dibutyl phthalate and 6 parts by weight of 1010/168 antioxidant according to the limited parts by weight in the formula for later use;
s5: uniformly coating the surface layer slurry obtained in the step S4 on the surface of the foaming layer obtained in the step S3, heating and plasticizing, performing rolling embossing treatment, and cooling;
s6: an acrylic adhesive layer was coated on the surface of the antibacterial leather base cloth obtained in S5, and a release film was coated on the surface of the adhesive layer to obtain a leather-like imitation.
The results of the tests of the antibacterial performance, the water drop angle, the storage at high temperature and high humidity, the cold and hot shock resistance, the ultraviolet ray resistance, and the like of examples 1 to 4 of the present invention, the commercially available leather 1, the commercially available leather 2, and the commercially available antibacterial leather 3 are shown in table 1. As can be seen from Table 1, the imitation leathers of examples 1-4 have an antibacterial rate of 99%, a water drop angle of over 100 degrees, a surface hydrophobic effect, and excellent comprehensive properties as tested by high temperature and high humidity, cold and heat shock, ultraviolet resistance, etc.
TABLE 1 Performance testing of imitation leather
Figure BDA0002895735470000111
Figure BDA0002895735470000121
According to the imitation leather provided by the embodiment of the invention, a multi-layer material composite structure design is carried out, and the release film, the bonding layer, the base cloth layer, the foaming layer and the surface layer can synergistically improve the comprehensive performance of the imitation leather. Imitated leather from the type membrane cover on the tie coat, take off from direct attached in the position of use of accessible tie coat behind the type membrane, the base cloth layer can make during the time the leather possesses imitated leather and possesses better mechanical strength, and the foaming layer can make imitated leather has resilience and soft sense of touch, possesses bacterinertness and moisture resistance the top layer cover in foaming layer upper surface can seal the through-hole that the foaming layer produced in the course of working avoids the moisture infiltration. The imitation leather provided by the embodiment of the invention has a surface water drop angle larger than 100 degrees, has excellent hydrophobicity, can effectively prevent liquid substances from staying on the surface of the imitation leather, and further improves the protection performance and dirt resistance of the imitation leather. Meanwhile, the surface layer uses the organic silicon resin as a sizing material, and the organic silicon resin takes siloxane bonds as a framework, so that the artificial leather has good thermal stability, weather resistance, solvent resistance and the like, and the service performance of the artificial leather is improved.
The embodiments of the present invention are not limited to the above-described embodiments, and various modifications or variations of the embodiments of the present invention are intended to be included within the scope of the claims and the equivalent techniques of the embodiments of the present invention, provided they do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. An imitation leather characterized by:
the base cloth layer, the foaming layer and the surface layer are sequentially arranged from bottom to top; the foaming layer covers one surface of the base cloth layer, and the surface layer covers the foaming layer;
the surface layer comprises a surface layer sizing material and an antibacterial agent, and the surface layer sizing material is organic silicon resin.
2. The imitation leather of claim 1, wherein:
the organic silicon resin is modified organic silicon resin.
3. The imitation leather of claim 1, wherein:
the cloth base is characterized by further comprising a release film and a bonding layer, the bonding layer covers the other side of the base cloth layer, and the release film covers the bonding layer.
4. The imitation leather of claim 1, wherein:
the skin layer also includes a skin plasticizer, an antioxidant, and a colorant.
5. The imitation leather of claim 1, wherein:
The surface layer comprises 50-600 parts of surface layer rubber material, 0.1-5 parts of antibacterial agent, 1-5 parts of surface layer plasticizer, 0.1-6 parts of antioxidant and 0-3 parts of colorant.
6. The imitation leather of claim 1, wherein:
the foaming layer comprises a foaming layer sizing material, a chemical foaming agent and a foaming layer plasticizer.
7. The imitation leather of claim 6, wherein:
the foaming layer sizing material comprises at least one of polyethylene, polyvinyl chloride, polyurethane or organic silicon resin; the chemical foaming agent comprises at least one of azo compounds, sulfonyl hydrazine compounds and nitroso compounds; the foaming layer plasticizer comprises at least one of di (2-ethylhexyl) phthalate, butylene phthalate and dibutyl phthalate.
8. The imitation leather of claim 6, wherein:
the foaming layer comprises 50-600 parts by weight of foaming layer rubber material, 3-15 parts by weight of chemical foaming agent and 1-5 parts by weight of foaming layer plasticizer.
9. A method for producing imitation leather according to any of claims 1 to 8, characterized in that:
the method comprises the following steps:
s1: pretreating the base cloth layer; preparing slurry of a foaming layer and slurry of a surface layer;
S2: coating the slurry of the foaming layer on one surface of the base cloth layer, and heating and foaming;
s3: coating the surface layer slurry on the surface of the foaming layer, heating and plasticizing, and then carrying out post-treatment;
s4: and coating the bonding layer on the other surface of the base cloth layer, and coating a release film on the surface of the bonding layer.
10. Use of the imitation leather of any of claims 1-8 in the field of housings for electronic products.
CN202110042187.1A 2021-01-13 2021-01-13 Imitation leather and preparation method and application thereof Pending CN114763677A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145266A (en) * 1976-12-21 1979-03-20 Honny Chemicals Co., Ltd. Simulated leather materials and electrolytic process for making them
JP2003225338A (en) * 2002-02-05 2003-08-12 Kineshio:Kk Golf glove and method for manufacturing the same
CN2593491Y (en) * 2003-01-15 2003-12-17 广东丰达高科技有限公司 Cladded facsimile apparatus receiver
CN202467089U (en) * 2012-03-05 2012-10-03 福建万华实业有限公司 Leather wood floor
CN107604680A (en) * 2017-08-02 2018-01-19 浙江蓝威汽车附件有限公司 A kind of direction indicators cover leather and its processing technology
US20200340175A1 (en) * 2019-04-24 2020-10-29 Honda Motor Co., Ltd. Foamed resin layer and synthetic leather

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4145266A (en) * 1976-12-21 1979-03-20 Honny Chemicals Co., Ltd. Simulated leather materials and electrolytic process for making them
JP2003225338A (en) * 2002-02-05 2003-08-12 Kineshio:Kk Golf glove and method for manufacturing the same
CN2593491Y (en) * 2003-01-15 2003-12-17 广东丰达高科技有限公司 Cladded facsimile apparatus receiver
CN202467089U (en) * 2012-03-05 2012-10-03 福建万华实业有限公司 Leather wood floor
CN107604680A (en) * 2017-08-02 2018-01-19 浙江蓝威汽车附件有限公司 A kind of direction indicators cover leather and its processing technology
US20200340175A1 (en) * 2019-04-24 2020-10-29 Honda Motor Co., Ltd. Foamed resin layer and synthetic leather
CN111851085A (en) * 2019-04-24 2020-10-30 本田技研工业株式会社 Foamed resin layer and synthetic leather

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