CN109263224B - Functional seamless wall cloth and preparation method thereof - Google Patents

Functional seamless wall cloth and preparation method thereof Download PDF

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Publication number
CN109263224B
CN109263224B CN201811338919.6A CN201811338919A CN109263224B CN 109263224 B CN109263224 B CN 109263224B CN 201811338919 A CN201811338919 A CN 201811338919A CN 109263224 B CN109263224 B CN 109263224B
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mass
cloth
parts
temperature
polyurethane tpu
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CN109263224A (en
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张文学
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Zhejiang Hongsheng Textile Technology Co ltd
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Zhejiang Hongsheng Textile Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels
    • B32B2607/02—Wall papers, wall coverings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
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    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • C—CHEMISTRY; METALLURGY
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K2201/011—Nanostructured additives
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica

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  • Polymers & Plastics (AREA)
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  • Laminated Bodies (AREA)
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Abstract

The invention discloses a functional seamless wall cloth and a preparation method thereof, and the functional seamless wall cloth comprises a surface layer cloth processed by plasma, a modified polyurethane TPU film and a bottom layer cloth processed by plasma which are sequentially pressed, wherein the modified polyurethane TPU film is prepared by the following method: uniformly mixing 70-80 parts by mass of polyurethane TPU, 6-9 parts by mass of low-density polyethylene LDPE, 6-9 parts by mass of nano silica, 4-6 parts by mass of nano silver powder and 4-6 parts by mass of calcium carbonate, and extruding and casting to form a film. According to the invention, the polyurethane TPU is modified by using the low-density polyethylene LDPE, the nano-silicon dioxide, the nano-silver powder and the calcium carbonate, so that the obtained seamless wall cloth product is soft and comfortable in hand feeling, has excellent waterproof, moistureproof and mildewproof performances, and is strong in bonding fastness. The fabric and the modified polyurethane TPU are compounded into a whole by hot pressing, and glue is not used, so that the energy-saving and environment-friendly effects are really achieved.

Description

Functional seamless wall cloth and preparation method thereof
Technical Field
The invention relates to wall cloth and a preparation method thereof, in particular to functional seamless wall cloth and a preparation method thereof.
Background
With the improvement of living standard, people pay more and more attention to interior decoration. Therefore, in recent years, many people have beautified indoor walls and ceilings by sticking wall cloths with various designs and colors to the indoor walls and ceilings. Most of the wall cloth is of a single-layer structure, only can beautify the wall cloth, cannot play a role in health care, and has few functions.
At present, the existing hot melt film composite wall cloth, called as hot composite wall cloth for short, is formed by hot pressing at the temperature of a hot roller, the melting point of a hot melt adhesive is about 60 ℃, but the melting point of the hot melt adhesive is high, so that the hot melt adhesive is not easy to be attached to a surface cloth, the manufacturing difficulty is high, and the hot melt film composite wall cloth has the advantages that: water-proof, moisture-proof and environment-friendly in a short time. The disadvantages are that: the product has high difficulty in attaching to the wall surface, is ironed by high-temperature ironing, has weak attaching force with the wall surface, and cannot be attached to the wall surface. The self-material selection of the wall surface is that a hot melt film with a low melting point is adopted and is easy to oxidize with climate change, and in addition, the hot melt film is directly attached to the wall surface, the alkalinity of the wall surface directly causes the oxidation and aging of the hot melt film to be quicker, the normal service life is about 5 years, and the maintenance is difficult to reach 10 years.
The market also shows that the wall cloth is formed by compounding a layer of health care material between two layers of fabrics, but the compounding needs glue. The glue contains more or less harmful substances, which are harmful to human health.
Disclosure of Invention
In order to solve the technical problems, the invention provides a functional seamless wall cloth and a preparation method thereof.
Specifically, on one hand, the invention provides functional seamless wall cloth, which comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment, which are sequentially pressed, wherein the modified polyurethane TPU film is prepared by the following method: uniformly mixing 70-80 parts by mass of polyurethane TPU, 6-9 parts by mass of low-density polyethylene LDPE, 6-9 parts by mass of nano silica, 4-6 parts by mass of nano silver powder and 4-6 parts by mass of calcium carbonate, and extruding and casting to form a film.
The surface layer cloth, the film and the bottom layer cloth in the functional seamless wall cloth are compounded together through a pressing process, and no glue is used, so that the energy conservation and the environmental protection are really realized. The modified polyurethane TPU film is compounded between the two layers of the shell fabric, and the main component of the polyurethane TPU film is an environment-friendly material, and has the characteristics of water resistance, air permeability, high tension, toughness, aging resistance and the like. The low-density polyethylene LDPE in the component has higher flexibility, extensibility, cold resistance and processability; has good chemical stability, and can resist acid, alkali, salt aqueous solution and the like. The nano silicon dioxide in the components has high temperature resistance, heat aging resistance and the like. The nano silver powder in the components has the antibacterial and deodorant effects. The calcium carbonate in the component is fine and uniform, and has good optical performance and sterilization and corrosion prevention functions. According to the invention, the polyurethane TPU is modified by using the low-density polyethylene LDPE, the nano silicon dioxide, the nano silver powder and the calcium carbonate, so that the obtained seamless wall cloth product is soft and comfortable in hand feeling, has excellent waterproof, moistureproof and mildewproof performances, is not influenced by weather, temperature and plum rain season in any area, is strong in bonding fastness and has a quality guarantee service life of more than 30 years.
Particularly preferably, the polyurethane TPU is a non-porous polyurethane TPU. The nonporous polyurethane TPU is composed of a soft segment and a hard segment, wherein the hard segment (isocyanate) can prevent water drops from passing through and plays a role in water resistance, and the soft segment is composed of hydrophilic molecules (polyether or polyester) and plays a role in air permeability and moisture permeability.
Particularly preferably, the particle size of the nano silicon dioxide is 10-50 nm, and the specific surface area is 250-300 m2/g。
Particularly preferably, the calcium carbonate is prepared from the following components in a mass ratio of 1-3: 1 and nano calcium carbonate with the grain diameter of 20-50 nm. The more regular the shape of the nano calcium carbonate is, the smaller the particles are, the more outstanding the reinforcing performance is, and the better the bonding performance is, but the larger the particle size is, the dispersibility of the product can be influenced; the light calcium carbonate is compounded, so that the mechanical property, the adhesive property and the antibacterial effect of the product are synergistically enhanced.
Particularly preferably, the mixture is uniformly mixed by using a high-speed mixer, wherein the high-speed stirring speed is 1000-1500 r/min, and the time is 6-10 min.
Particularly preferably, the extrusion casting film forming is carried out by using a casting machine, and the temperature of each zone of the casting machine is as follows: the temperature of the charging barrel is 180-200 ℃, the temperature of the filter screen is 190-205 ℃, the temperature of the elbow is 190-205 ℃, the temperature of the connecting pipe is 190-205 ℃, and the temperature of the die head is 190-200 ℃.
In a second aspect, the present invention also provides a method for preparing the above functional seamless wall cloth, which comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge;
(2) sequentially stacking the treated surface layer fabric, the modified polyurethane TPU film and the treated bottom layer fabric in sequence, and then feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine for compounding;
(3) and (5) conveying the compounded cloth into a cooling roller through a cloth guiding belt for cooling, thus obtaining the cloth.
After the surfaces of the surface layer shell fabric and the bottom layer shell fabric are activated by using oxygen plasma discharge, the roughness and the activated groups of the surfaces of the surface layer shell fabric and the bottom layer shell fabric are increased, and the adhesion with the polyurethane TPU film is enhanced.
In the step (1), the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, and during the treatment, the oxygen flow is 10-50 ccm, the cavity pressure is 100-800 mtorr, and the treatment time is 30-90 s. According to the invention, pure oxygen is adopted, oxygen element is introduced to the surface of the shell fabric, and carbonyl, carboxyl and other groups generated on the surface can be combined with free isocyanate in the TPU, so that the cohesiveness of the TPU film and the TPU film is enhanced.
Wherein, in the step (2), the temperature of the hot-pressing roller is 100-150 ℃, and the pressure is 5-6 Kpa. Softening the modified polyurethane TPU at 100-150 ℃, and bonding and compounding the modified polyurethane TPU with the shell fabric after applying certain pressure.
Wherein in the step (3), the cooling temperature of the cooling roller is 20-25 ℃.
Preferably, the bottom layer surface cloth and the surface layer surface cloth are textiles woven by intrinsic flame-retardant phosphorus-containing polyester, and the wall cloth has certain flame-retardant performance by using the surface cloth made of the materials.
According to the technical scheme, the modified polyurethane TPU film is compounded between the two layers of the surface cloth, and the polyurethane TPU is modified by using the low-density polyethylene LDPE, the nano silicon dioxide, the nano silver powder and the calcium carbonate, so that the obtained seamless wall cloth product is soft and comfortable in hand feeling, has excellent waterproof, moistureproof and mildewproof performances, is not influenced by the climate, temperature and plum rain season in any area, is strong in bonding fastness and has the quality guarantee service life of more than 30 years. After the surface layer surface cloth and the bottom layer surface cloth are activated, the modified polyurethane TPU film is compounded in the middle, and the surface layer cloth and the bottom layer cloth are hot-pressed and compounded into a whole, so that no glue is used, and the energy conservation and the environmental protection are really realized.
Detailed Description
The present invention will be described in detail below with reference to specific examples. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the invention, but is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the present invention is defined by the appended claims.
Unless otherwise specified, various reagents, starting materials, instruments and equipment used in the present invention are commercially available.
Example 1
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 75 parts by mass of non-porous polyurethane (TPU), 8 parts by mass of low-density polyethylene (LDPE), 8 parts by mass of nano silicon dioxide, 4 parts by mass of nano silver powder and 5 parts by mass of calcium carbonate by using a high-speed mixer, wherein the high-speed stirring speed is 1500r/min, and the time is 6 min; then, a casting machine is used for extruding, casting and film forming, and the temperature of each area of the casting machine is as follows: the temperature of the charging barrel is 180 ℃, the temperature of the filter screen is 190 ℃, the temperature of the elbow is 190 ℃, the temperature of the connecting head is 190 ℃ and the temperature of the die head is 190 ℃.
The particle size of the nano silicon dioxide is 10-50 nm, and the specific surface area is 250-300 m2(ii) in terms of/g. The calcium carbonate is prepared from the following components in percentage by mass of 2: 1 and nano calcium carbonate with the grain diameter of 20-50 nm.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge; the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, during the treatment, the oxygen flow is 30ccm, the cavity pressure of the oxygen plasma treatment instrument is 500mtorr, the treatment time is 60s, and the power is 200W;
(2) sequentially stacking the treated surface layer fabric, the modified polyurethane TPU film and the treated bottom layer fabric in sequence, and then feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine for compounding; the temperature of the hot-pressing roller is 120 ℃, and the pressure is 5 Kpa;
(3) and (3) feeding the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 25 ℃, and thus obtaining the cloth.
Example 2
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 70 parts by mass of non-porous polyurethane (TPU), 9 parts by mass of low-density polyethylene (LDPE), 9 parts by mass of nano-silica, 6 parts by mass of nano-silver powder and 6 parts by mass of calcium carbonate by using a high-speed mixer, wherein the high-speed stirring speed is 1000r/min, and the high-speed stirring time is 6 min; then, a casting machine is used for extruding, casting and film forming, and the temperature of each area of the casting machine is as follows: the cylinder temperature was 200 ℃, the screen temperature was 205 ℃, the elbow temperature was 205 ℃, the connection temperature was 205 ℃ and the die temperature was 200 ℃.
The particle size of the nano silicon dioxide is 10-50 nm, and the specific surface area is 250-300 m2(ii) in terms of/g. The calcium carbonate is prepared from the following components in percentage by mass of 1: 1 and nano calcium carbonate with the grain diameter of 20-50 nm.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge; the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, during the treatment, the oxygen flow is 10ccm, the cavity pressure of the oxygen plasma treatment instrument is 100mtorr, the treatment time is 90s, and the power is 300W;
(2) sequentially stacking the treated surface layer fabric, the modified polyurethane TPU film and the treated bottom layer fabric in sequence, and then feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine for compounding; the temperature of the hot-pressing roller is 100 ℃, and the pressure is 5 Kpa;
(3) and (3) conveying the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 20 ℃, and thus obtaining the cloth.
Example 3
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 80 parts by mass of non-porous polyurethane (TPU), 6 parts by mass of low-density polyethylene (LDPE), 6 parts by mass of nano silicon dioxide, 4 parts by mass of nano silver powder and 4 parts by mass of calcium carbonate by using a high-speed mixer, wherein the high-speed stirring speed is 1500r/min, and the time is 8 min; then, a casting machine is used for extruding, casting and film forming, and the temperature of each area of the casting machine is as follows: the temperature of the charging barrel is 180 ℃, the temperature of the filter screen is 190 ℃, the temperature of the elbow is 190 ℃, the temperature of the connecting head is 190 ℃ and the temperature of the die head is 190 ℃.
The particle size of the nano silicon dioxide is 10-50 nm, and the specific surface area is 250-300 m2(ii) in terms of/g. The calcium carbonate is prepared from the following components in percentage by mass of 3: 1 and nano calcium carbonate with the grain diameter of 20-50 nm.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge; the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, during the treatment, the oxygen flow is 40ccm, the cavity pressure of the oxygen plasma treatment instrument is 500mtorr, the treatment time is 30s, and the power is 100W;
(2) sequentially stacking the treated surface layer fabric, the modified polyurethane TPU film and the treated bottom layer fabric in sequence, and then feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine for compounding; the temperature of the hot-pressing roller is 150 ℃, and the pressure is 5 Kpa;
(3) and (3) feeding the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 25 ℃, and thus obtaining the cloth.
Example 4
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 75 parts by mass of non-porous polyurethane (TPU), 6 parts by mass of low-density polyethylene (LDPE), 8 parts by mass of nano-silica, 5 parts by mass of nano-silver powder and 6 parts by mass of calcium carbonate by using a high-speed mixer, wherein the high-speed stirring speed is 1500r/min, and the time is 6 min; then, a casting machine is used for extruding, casting and film forming, and the temperature of each area of the casting machine is as follows: the temperature of the charging barrel is 180 ℃, the temperature of the filter screen is 190 ℃, the temperature of the elbow is 190 ℃, the temperature of the connecting head is 190 ℃ and the temperature of the die head is 190 ℃.
The particle size of the nano silicon dioxide is 10-50 nm, and the specific surface area is 250-300 m2(ii) in terms of/g. The calcium carbonate is prepared from the following components in percentage by mass of 2: 1 and nano calcium carbonate with the grain diameter of 20-50 nm.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge; the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, during the treatment, the oxygen flow is 30ccm, the cavity pressure of the oxygen plasma treatment instrument is 400mtorr, the treatment time is 50s, and the power is 200W;
(2) sequentially stacking the treated surface layer fabric, the modified polyurethane TPU film and the treated bottom layer fabric in sequence, and then feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine for compounding; the temperature of the hot-pressing roller is 120 ℃, and the pressure is 6 Kpa;
(3) and (3) feeding the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 25 ℃, and thus obtaining the cloth.
Example 5
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 75 parts by mass of non-porous polyurethane (TPU), 6 parts by mass of low-density polyethylene (LDPE), 7 parts by mass of nano-silica, 6 parts by mass of nano-silver powder and 6 parts by mass of calcium carbonate by using a high-speed mixer, wherein the high-speed stirring speed is 1500r/min, and the time is 6 min; then, a casting machine is used for extruding, casting and film forming, and the temperature of each area of the casting machine is as follows: the temperature of the charging barrel is 180 ℃, the temperature of the filter screen is 190 ℃, the temperature of the elbow is 190 ℃, the temperature of the connecting head is 190 ℃ and the temperature of the die head is 190 ℃.
The particle size of the nano silicon dioxide is 10-50 nm, and the specific surface area is 250-300 m2(ii) in terms of/g. The calcium carbonate is prepared from the following components in percentage by mass of 2: 1 and nano calcium carbonate with the grain diameter of 20-50 nm.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge; the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, during the treatment, the oxygen flow is 40ccm, the cavity pressure of the oxygen plasma treatment instrument is 500mtorr, the treatment time is 50s, and the power is 300W;
(2) sequentially stacking the treated surface layer fabric, the modified polyurethane TPU film and the treated bottom layer fabric in sequence, and then feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine for compounding; the temperature of the hot-pressing roller is 125 ℃, and the pressure is 6 Kpa;
(3) and (3) feeding the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 25 ℃, and thus obtaining the cloth.
Comparative example 1
A functional seamless wall cloth comprises a surface layer cloth, a modified polyurethane TPU film and a bottom layer cloth which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 75 parts by mass of non-porous polyurethane TPU, 8 parts by mass of low-density polyethylene LDPE, 8 parts by mass of nano silica, 4 parts by mass of nano silver powder and 5 parts by mass of calcium carbonate by using a high-speed mixer, and then extruding and casting to form a film.
The rest is the same as in example 1.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) sequentially laminating the surface layer surface cloth, the modified polyurethane TPU film and the bottom layer surface cloth in sequence, and then feeding the laminated cloth into a hot pressing roller through a cloth guiding belt in a compound machine for compounding; the temperature of the hot-pressing roller is 120 ℃, and the pressure is 5 Kpa;
(3) and (3) feeding the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 25 ℃, and thus obtaining the cloth.
Comparative example 2
A functional seamless wall cloth comprises a surface layer cloth, a modified polyurethane TPU film and a bottom layer cloth which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: uniformly mixing 75 parts by mass of non-porous polyurethane TPU, 8 parts by mass of low-density polyethylene LDPE, 8 parts by mass of nano silica, 4 parts by mass of nano silver powder and 5 parts by mass of calcium carbonate by using a high-speed mixer, and then extruding and casting to form a film.
The rest is the same as in example 1.
The preparation method of the functional seamless wall cloth comprises the following steps:
(1) applying glue on the film surface through point transfer, wherein the glue is PUR glue, compounding surface layer cloth, a modified polyurethane TPU film and bottom layer cloth together, and then conveying the compound cloth into a hot pressing roller through a cloth guiding belt in the compound machine for compounding; the temperature of the hot-pressing roller is 120 ℃, and the pressure is 5 Kpa;
(3) and (3) feeding the compounded cloth into a cooling roller through a cloth guiding belt for cooling, wherein the cooling temperature of the cooling roller is 25 ℃, and thus obtaining the cloth.
Comparative example 3
A functional seamless wall cloth comprises a plasma-treated surface layer cloth, a polyurethane TPU film and a plasma-treated bottom layer cloth which are sequentially pressed.
The polyurethane TPU film is prepared by the following method: and extruding and casting 100 parts by mass of nonporous polyurethane TPU into a film by using a casting machine.
The preparation method is the same as that of example 1.
Comparative example 4
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: the preparation method comprises the steps of uniformly mixing 83 parts by mass of nonporous polyurethane (TPU), 8 parts by mass of nano silica, 4 parts by mass of nano silver powder and 5 parts by mass of calcium carbonate by using a high-speed mixer, and then extruding and casting to form a film.
The preparation method is the same as that of example 1.
Comparative example 5
A functional seamless wall cloth comprises a surface layer cloth subjected to plasma treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to plasma treatment which are sequentially pressed.
The modified polyurethane TPU film is prepared by the following method: the preparation method comprises the steps of uniformly mixing 83 parts by mass of non-porous polyurethane TPU, 8 parts by mass of low-density polyethylene LDPE, 4 parts by mass of nano-silver powder and 5 parts by mass of calcium carbonate by using a high-speed mixer, and then extruding and casting to form a film.
The preparation method is the same as that of example 1.
Effects of the embodiment
The wall cloth products of examples 1-5 and comparative examples 1-5 are tested according to GB/T4744-.
TABLE 1
Figure BDA0001861997150000101
As shown in Table 1, the results of the present invention in example 1 compared with comparative examples 1 and 2 show that the same viscosity strength as that of compounding with hot melt adhesive can be achieved by the hot press compounding method after the surface treatment according to the present invention, and the tensile strength and tensile elongation of the product can be improved. Compared with the comparative examples 3, 4 and 5, the embodiment 1 of the invention has the advantages that the polyurethane TPU is not modified in the comparative example 3, the low-density polyethylene LDPE is lacked in the modified component in the comparative example 4, and the nano silicon dioxide is lacked in the modified component in the comparative example 5, so that the mechanical property and the bonding strength of the product obtained by modifying the polyurethane TPU by using the components are obviously improved, and the product has good waterproof and antibacterial properties.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The functional hot-pressing composite seamless wall cloth is characterized by comprising a surface layer cloth subjected to oxygen plasma discharge treatment, a modified polyurethane TPU film and a bottom layer cloth subjected to oxygen plasma discharge treatment, which are directly hot-pressed and compounded in sequence, wherein the modified polyurethane TPU film is prepared by the following method: uniformly mixing 70-80 parts by mass of polyurethane TPU, 6-9 parts by mass of low-density polyethylene LDPE, 6-9 parts by mass of nano silica, 4-6 parts by mass of nano silver powder and 4-6 parts by mass of calcium carbonate, and extruding and casting to form a film;
the oxygen used for the oxygen plasma discharge treatment is 100% pure oxygen, during treatment, the oxygen flow is 10-50 ccm, the cavity pressure is 100-800 mtorr, and the treatment time is 30-90 s.
2. The functional thermo-compression composite seamless wall covering of claim 1, wherein the polyurethane TPU is a non-porous polyurethane TPU.
3. The functional hot-pressing composite seamless wall cloth according to claim 1, wherein the nano silica has a particle size of 10-50 nm and a specific surface area of 250-300 m2/g。
4. The functional hot-pressed composite seamless wall cloth according to claim 1, wherein the calcium carbonate is prepared from the following components in a mass ratio of 1-3: 1 and nano calcium carbonate with the grain diameter of 20-50 nm.
5. The functional hot-pressing composite seamless wall cloth according to claim 1, wherein a high-speed mixer is used for uniformly mixing, the high-speed stirring speed is 1000-1500 r/min, and the time is 6-10 min.
6. The functional hot-pressing composite seamless wall cloth according to claim 1, wherein a casting machine is used for extrusion casting film forming, and the temperature of each zone of the casting machine is as follows: the temperature of the charging barrel is 180-200 ℃, the temperature of the filter screen is 190-205 ℃, the temperature of the elbow is 190-205 ℃, the temperature of the connecting pipe is 190-205 ℃, and the temperature of the die head is 190-200 ℃.
7. A method for preparing the functional thermo-compression composite seamless wall cloth according to any one of claims 1 to 6, characterized in that the method comprises the following steps:
(1) activating the surfaces of the surface layer shell fabric and the bottom layer shell fabric by using oxygen plasma discharge;
(2) sequentially stacking the treated surface fabric, the modified polyurethane TPU film and the treated bottom fabric in sequence, and feeding the materials into a hot pressing roller through a cloth guiding belt in a compound machine
In the method, the base fabric and the modified polyurethane TPU film are directly compounded into a whole;
(3) and (5) conveying the compounded cloth into a cooling roller through a cloth guiding belt for cooling, thus obtaining the cloth.
8. The method for preparing a functional hot-pressing composite seamless wall cloth according to claim 7, wherein in the step (1), the oxygen used in the oxygen plasma discharge treatment is 100% pure oxygen, and during the treatment, the oxygen flow is 10-50 ccm, the cavity pressure is 100-800 mtorr, and the treatment time is 30-90 s.
9. The method for preparing functional hot-pressing composite seamless wall cloth according to claim 7, wherein in the step (2), the temperature of the hot-pressing roller is 100-150 ℃, and the pressure is 5-6 Kpa.
10. The method for preparing a functional seamless wall cloth according to claim 7, wherein in the step (3), the cooling temperature of the cooling roller is 20-25 ℃.
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