CN114687076A - Temperature-adjusting non-woven fabric and preparation method thereof - Google Patents

Temperature-adjusting non-woven fabric and preparation method thereof Download PDF

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Publication number
CN114687076A
CN114687076A CN202210253472.2A CN202210253472A CN114687076A CN 114687076 A CN114687076 A CN 114687076A CN 202210253472 A CN202210253472 A CN 202210253472A CN 114687076 A CN114687076 A CN 114687076A
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temperature
woven fabric
phase
change material
microcapsule
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顾军
莫诗蕙
陈明情
陈凤珍
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Guanhe Sanitary Products Co ltd
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Guanhe Sanitary Products Co ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/12—Processes in which the treating agent is incorporated in microcapsules
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups

Abstract

The invention provides a temperature-regulating non-woven fabric and a preparation method thereof, wherein the temperature-regulating non-woven fabric is composed of non-woven fabric and phase-change microcapsules. The non-woven fabric can be a double-layer or three-layer composite body and consists of polypropylene, a slipping agent and a polyolefin elastomer, the phase-change microcapsule is a phase-change material, the capsule wall of the phase-change microcapsule is polyurethane resin, melamine modified urea resin or melamine formaldehyde resin, and the capsule core is paraffin or gelatin. The temperature-adjusting non-woven fabric prepared by the invention can adjust the temperature and the humidity of a microenvironment within a certain range, increase the comfort of a human body and reduce the sensitivity of skin.

Description

Temperature-adjusting non-woven fabric and preparation method thereof
Technical Field
The invention belongs to the technical field of textile materials, and particularly relates to a temperature-regulating non-woven fabric and a manufacturing method thereof.
Background
The non-woven fabric is made of chemical fiber as basic material and through chemical or hot melting adhesion. The non-woven fabric is also called non-woven fabric because the non-woven fabric is not woven, and the non-woven fabric is formed by directly utilizing high polymer slices, short fibers or filaments to form a net through air flow or machinery, then carrying out spunlace, needle punching or hot rolling reinforcement, and finally carrying out later finishing.
The human body temperature is gradually reduced from inside to outside, the temperature feeling of people depends on the microenvironment temperature of each part, and the human body discomfort can be caused by supercooling and overheating. The general fabrics only have the heat preservation function, do not have cooling and function that adjusts the temperature, and when ambient temperature was higher, traditional fabrics can not guarantee that the human body is in comfortable temperature range. Along with the improvement of living standard and the continuous development of science and technology in recent years, the requirements of people on various textiles are higher and higher, for example, people hope that the baby diaper and the sanitary towel for women have higher heat and humidity comfort and the like. Particularly, the skin of an infant is more sensitive, the microenvironment created by the paper diaper has an important influence on the sensitive skin of the infant, the problem of 'red fart' caused by the fact that damp and heat in the infant diaper cannot be rapidly dissipated becomes a difficulty for preventing the further development of the infant diaper, the comfort of the microenvironment created by the paper diaper depends on the temperature and cold feeling, the wetting and stuffiness feeling, and in recent years, people optimize material selection and product structure, improve the wetting and stuffiness feeling, but pay less attention to the temperature and cold feeling.
The temperature-regulating principle of the temperature-regulating non-woven fabric is that the form of the temperature-regulating non-woven fabric changes at a certain temperature, for example, the form is converted from a solid state into a liquid state or from the liquid state into the solid state, and the change process of the form is accompanied by heat absorption and heat release processes, so that the phase-change material has the use value that the phase-change material absorbs and releases a large amount of heat energy, thereby keeping the temperature constant in a certain range, namely the temperature-regulating function. The temperature regulation function is spontaneous, and no special energy supply means, namely, no artificial energy source is needed.
Therefore, the temperature-adjusting non-woven fabric can automatically adjust and control the temperature of the high-temperature and high-humidity environment under the condition of not needing artificial energy, so that the feeling of a human body, particularly a baby, is mild, and the discomfort caused by the temperature change is relieved or eliminated.
Disclosure of Invention
Based on the prior art, the invention aims to provide the temperature-adjusting non-woven fabric and the preparation method thereof.
In order to achieve the above purpose, the invention adopts the technical scheme that:
the temperature-adjusting non-woven fabric is composed of a non-woven fabric and a phase-change microcapsule, the non-woven fabric can be a double-layer or three-layer complex, the phase-change microcapsule is a phase-change material, and the phase-change material is composed of a capsule wall and a capsule core.
In order to better realize the invention, the non-woven fabric composite body consists of polypropylene, a slipping agent and a polyolefin elastomer, wherein the polypropylene raw material accounts for 50-70% by mass, the slipping agent raw material accounts for 1-4% by mass, and the rest raw material is the polyolefin elastomer.
In order to better realize the invention, the capsule wall of the phase-change material is one of polyurethane resin, melamine modified urea resin or melamine formaldehyde resin, and the capsule core is one of paraffin or gelatin, wherein the capsule wall raw material accounts for 60-80% of the mass fraction of the phase-change material, and the capsule core raw material accounts for 20-40% of the mass fraction of the phase-change material.
In order to better realize the invention, the grain diameter of the capsule core of the phase-change material is 0.5-2.0 μm, and the enthalpy value is more than or equal to 150 kJ/kg.
The invention also provides a preparation method of the temperature-regulating non-woven fabric, which comprises the following steps:
step 1, preparing a non-woven fabric complex by a spun-bonding method;
step 2, preparing phase-change material microcapsule powder;
step 3, preparing the phase-change material into a microcapsule solution;
step 4, putting the non-woven fabric complex into a microcapsule solution for soaking;
step 5, removing excessive liquid on the surface after the dipping is finished and taking out, and drying and heat setting;
and 6, checking and coiling.
In order to better realize the invention, further, a non-woven fabric complex is prepared by a spun-bond method in the step 1, and a high polymer is polymerized under the solvent-free condition of 120-160 ℃; granulating, and slicing at a constant temperature, wherein the slicing temperature is 55-70 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the obtained product into a screw press for heating at the temperature of 200-220 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling at the temperature of 10-30 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, performing hot rolling reinforcement through a pre-pressing roller and a rolling mill at the temperature of 130-160 ℃ and under the pressure of 4-10 Mpa, and winding and forming for later use.
In order to better realize the invention, further, the phase change material microcapsule powder is prepared by an in-situ polymerization method in the step 2, the capsule core, the emulsifier Tween 20 and distilled water are mixed according to the ratio of 1:0.04:4, stirred at the temperature of 60-80 ℃, stirred at the rotating speed of 600-1000 rpm and emulsified for 20-30 min; and slowly adding a capsule wall water solution with the mass fraction of 30-50%, adjusting the pH to 2-4 by using 6M hydrochloric acid, controlling the process temperature to be 60-80 ℃, heating to 90 ℃ after forming the microcapsule, keeping the temperature for 1-2 hours, washing for 2-3 times by using distilled water, performing suction filtration, and performing vacuum drying at the drying temperature of 60-80 ℃.
In order to better realize the invention, the mass concentration of the microcapsule solution prepared in the step 3 is 10-30%.
In order to better realize the method, the dipping time in the step 4 is further 5-10 s, and the gram weight of the phase-change material is controlled to be 10-50 gsm.
In order to better realize the method, the drying temperature in the step 5 is 80-120 ℃.
Advantageous effects
The invention has the following beneficial effects:
(1) the invention adopts the microcapsule technology containing the phase-change material, wherein the phase-change material refers to a substance which changes the form along with the change of temperature and can provide latent heat. The process of a phase change material changing from a solid state to a liquid state or from a liquid state to a solid state is called a phase change process, and when the phase change material absorbs or releases a large amount of latent heat, the temperature of the phase change material itself is almost kept constant. After the microcapsule technology is combined with the phase-change material, the leakage of the gaseous or liquid phase-change material is avoided; easy to be compounded with fiber, fabric or foam; the influence on the final performance of the finished product is reduced; the finished product can be normally nursed within the shelf life; reducing the influence of external environment, such as oxidation, hydrolysis, volatilization and the like; the area of heat transfer is increased.
(2) The invention combines the phase-change material and the non-woven fabric by adopting an impregnation method, has simple process, safety, high efficiency and attractive appearance, does not influence the pattern and the structure of the original non-woven fabric, can automatically select the surface shaping pattern and reduces the environmental pollution.
(3) The temperature-adjusting non-woven fabric prepared by the invention has good temperature-adjusting performance, and particularly has excellent performance at 20-45 ℃, so that the comfortableness of a microenvironment when the temperature-adjusting non-woven fabric is close to the skin can be controlled, and the moist cold and stuffy feeling are improved through the regulation and control of the temperature feeling, so that the discomfort caused by the temperature change can be alleviated or eliminated.
Drawings
FIG. 1 is a high power scanning electron microscope image of the microcapsule of example 1 of the present invention.
FIG. 2 is a comparative graph showing the temperature control of example 1 of the present invention and a comparative example.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The embodiment provides a temperature-adjusting non-woven fabric, which is composed of a non-woven fabric and a phase-change microcapsule, wherein the non-woven fabric can be a double-layer or three-layer composite body, the composite body is composed of polypropylene, a slipping agent and a polyolefin elastomer, the polypropylene raw material accounts for 60% by mass, the slipping agent raw material accounts for 2% by mass, and the rest raw material is the polyolefin elastomer.
The phase-change microcapsule is made of a phase-change material, the phase-change material comprises a capsule wall and a capsule core, the capsule wall is made of polyurethane resin, the capsule core is made of paraffin, the particle size is 1.0 mu m, and the enthalpy value is more than or equal to 150 kJ/kg. Wherein the capsule wall raw material accounts for 60 percent of the mass fraction of the phase-change material, and the capsule core raw material accounts for 40 percent of the mass fraction of the phase-change material.
The embodiment also provides a preparation method of the temperature-regulating non-woven fabric, which comprises the following steps:
step 1, preparing a non-woven fabric complex by a spun-bonding method: polymerizing the high polymer under 140 ℃ without solvent; granulating, and slicing at a constant temperature, wherein the slicing temperature is 60 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the slices into a screw press for heating at the heating temperature of 210 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling the filament tows at the cooling air temperature of 20 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, passing through a pre-press roller, and performing hot rolling reinforcement through a rolling mill at the temperature of 140 ℃ and the pressure of 6MPa, and winding and forming for later use;
step 2, preparing phase change material microcapsule powder by an in-situ polymerization method: mixing the capsule core, emulsifier Tween 20 and distilled water at a ratio of 1:0.04:4, stirring at 80 deg.C and 900rpm, and emulsifying for 30 min; slowly adding 50% of capsule wall aqueous solution, adjusting pH to 3 with 6M hydrochloric acid, controlling the process temperature to 80 ℃, heating to 90 ℃ after forming microcapsules, keeping the temperature for 1h, washing with distilled water for 3 times, performing suction filtration, and performing vacuum drying at the drying temperature of 60 ℃;
step 3, preparing the phase-change material into a microcapsule solution with the mass concentration of 30%;
step 4, putting the non-woven fabric composite into a microcapsule solution for soaking for 10s, and controlling the gram weight of the phase-change material to be 50 gsm;
step 5, removing excessive liquid on the surface after the dipping is finished and the surface is taken out, drying and heat setting treatment are carried out, wherein the drying temperature is 90 DEG C
And 6, checking and coiling.
Example 2
The embodiment provides a temperature-adjusting non-woven fabric, which is composed of a non-woven fabric and a phase-change microcapsule, wherein the non-woven fabric can be a double-layer or three-layer composite body, the composite body is composed of polypropylene, a slipping agent and a polyolefin elastomer, the polypropylene raw material accounts for 50% by mass, the slipping agent raw material accounts for 1% by mass, and the rest raw material is the polyolefin elastomer.
The phase-change microcapsule is made of phase-change materials, each phase-change material comprises a capsule wall and a capsule core, the capsule wall is made of polyurethane resin, the capsule core is made of paraffin, the particle size is 2.0 mu m, and the enthalpy value is more than or equal to 150 kJ/kg. Wherein, the capsule wall raw material accounts for 65 percent of the mass fraction of the phase-change material, and the capsule core raw material accounts for 35 percent of the mass fraction of the phase-change material.
The embodiment also provides a preparation method of the temperature-regulating non-woven fabric, which comprises the following steps:
step 1, preparing a non-woven fabric complex by a spun-bonding method: polymerizing the high polymer under the condition of 160 ℃ without a solvent; granulating, and slicing at a constant temperature, wherein the slicing temperature is 70 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the slices into a screw press for heating at 220 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling the filament tows at 30 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, performing hot rolling reinforcement through a pre-press roller and a rolling mill at 160 ℃ and 4MPa, and winding and forming for later use;
step 2, preparing phase change material microcapsule powder by an in-situ polymerization method: mixing the capsule core, emulsifier Tween 20 and distilled water at a ratio of 1:0.04:4, stirring at 75 deg.C, stirring at 1000rpm, and emulsifying for 30 min; slowly adding 45 mass percent of capsule wall aqueous solution, simultaneously adjusting the pH value to 4 by using 6M hydrochloric acid, controlling the process temperature to be 75 ℃, after forming microcapsules, heating to 90 ℃, keeping the temperature for 1h, washing with distilled water for 3 times, then performing suction filtration, and performing vacuum drying at the drying temperature of 75 ℃;
step 3, preparing the phase-change material into a microcapsule solution with the mass concentration of 30%;
step 4, putting the non-woven fabric composite into a microcapsule solution for soaking for 5s, and controlling the gram weight of the phase-change material to be 40 gsm;
step 5, removing excessive liquid on the surface after the dipping is finished, drying and heat setting, wherein the drying temperature is 120 DEG C
And 6, checking and coiling.
Example 3
The embodiment provides a temperature-adjusting non-woven fabric, which is composed of a non-woven fabric and a phase-change microcapsule, wherein the non-woven fabric can be a double-layer or three-layer composite body, the composite body is composed of polypropylene, a slipping agent and a polyolefin elastomer, wherein the polypropylene raw material accounts for 55% by mass, the slipping agent raw material accounts for 2% by mass, and the rest raw material is the polyolefin elastomer.
The phase-change microcapsule is made of a phase-change material, the phase-change material comprises a capsule wall and a capsule core, the capsule wall is made of melamine modified urea-formaldehyde resin, the capsule core is made of paraffin, the particle size is 1.5 mu m, and the enthalpy value is more than or equal to 150 kJ/kg. Wherein, the capsule wall raw material accounts for 70 percent of the mass fraction of the phase-change material, and the capsule core raw material accounts for 30 percent of the mass fraction of the phase-change material.
The embodiment also provides a preparation method of the temperature-regulating non-woven fabric, which comprises the following steps:
step 1, preparing a non-woven fabric complex by a spun-bonding method: polymerizing the high polymer under the condition of 150 ℃ without a solvent; granulating, and slicing at a constant temperature, wherein the slicing temperature is 65 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the slices into a screw press for heating at 215 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling the filament tows at 30 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, performing hot rolling reinforcement through a pre-press roller and a rolling mill at 150 ℃ and 5MPa, and winding and forming for later use;
step 2, preparing phase change material microcapsule powder by an in-situ polymerization method: mixing the capsule core, emulsifier Tween 20 and distilled water at a ratio of 1:0.04:4, stirring at 70 deg.C and stirring speed of 800rpm, and emulsifying for 25 min; slowly adding 35% of capsule wall aqueous solution, adjusting pH to 3 with 6M hydrochloric acid, controlling process temperature to 70 ℃, heating to 90 ℃ after forming microcapsules, keeping the temperature for 1.5h, washing with distilled water for 3 times, performing suction filtration, and performing vacuum drying at 70 ℃;
step 3, preparing the phase-change material into a microcapsule solution with the mass concentration of 20%;
step 4, putting the non-woven fabric composite into a microcapsule solution for soaking for 10s, and controlling the gram weight of the phase-change material to be 30 gsm;
step 5, removing excessive liquid on the surface after the dipping is finished and the surface is taken out, drying and heat setting treatment are carried out, wherein the drying temperature is 110 DEG C
And 6, checking and coiling.
Example 4
The embodiment provides a temperature-adjusting non-woven fabric, which is composed of a non-woven fabric and a phase-change microcapsule, wherein the non-woven fabric can be a double-layer or three-layer composite, the composite is composed of polypropylene, a slipping agent and a polyolefin elastomer, wherein the polypropylene is 65% in mass percentage, the slipping agent is 3% in mass percentage, and the rest is the polyolefin elastomer.
The phase-change microcapsule is made of a phase-change material, the phase-change material comprises a capsule wall and a capsule core, the capsule wall is made of melamine formaldehyde resin, the capsule core is made of gelatin, the particle size is 1.0 mu m, and the enthalpy value is more than or equal to 150 kJ/kg. Wherein, the capsule wall raw material accounts for 75 percent of the mass fraction of the phase-change material, and the capsule core raw material accounts for 25 percent of the mass fraction of the phase-change material.
The embodiment also provides a preparation method of the temperature-regulating non-woven fabric, which comprises the following steps:
step 1, preparing a non-woven fabric complex by a spun-bonding method: polymerizing the high polymer under the condition of 130 ℃ without a solvent; granulating, and slicing at a constant temperature, wherein the slicing temperature is 60 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the slices into a screw press for heating at the heating temperature of 205 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling the filament tows at the cooling air temperature of 20 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, passing through a pre-press roller, and performing hot rolling reinforcement through a rolling mill at the temperature of 140 ℃ and the pressure of 8MPa, and winding and forming for later use;
step 2, preparing phase change material microcapsule powder by an in-situ polymerization method: mixing the capsule core, emulsifier Tween 20 and distilled water at a ratio of 1:0.04:4, stirring at 65 deg.C and stirring speed of 700rpm, and emulsifying for 20 min; slowly adding 40% of capsule wall aqueous solution, adjusting pH to 2 with 6M hydrochloric acid, controlling the process temperature to 6 ℃ to form microcapsules, heating to 90 ℃, keeping the temperature for 2 hours, washing with distilled water for 2 times, performing suction filtration, and performing vacuum drying at the drying temperature of 6 ℃;
step 3, preparing the phase-change material into a microcapsule solution with the mass concentration of 20%;
step 4, putting the non-woven fabric composite into a microcapsule solution for soaking for 5s, and controlling the gram weight of the phase-change material to be 20 gsm;
step 5, removing redundant liquid on the surface after the dipping is finished and the surface is taken out, and drying and heat setting the surface, wherein the drying temperature is 100 ℃;
and 6, checking and coiling.
Example 5
The embodiment provides a temperature-adjusting non-woven fabric, which is composed of a non-woven fabric and a phase-change microcapsule, wherein the non-woven fabric can be a double-layer or three-layer composite body, the composite body is composed of polypropylene, a slipping agent and a polyolefin elastomer, the polypropylene raw material accounts for 70% by mass, the slipping agent raw material accounts for 4% by mass, and the rest raw material is the polyolefin elastomer.
The phase-change microcapsule is made of a phase-change material, the phase-change material comprises a capsule wall and a capsule core, the capsule wall is made of polyurethane resin, the capsule core is made of gelatin, the particle size is 0.5 mu m, and the enthalpy value is more than or equal to 150 kJ/kg. Wherein, the capsule wall raw material accounts for 80 percent of the mass fraction of the phase-change material, and the capsule core raw material accounts for 20 percent of the mass fraction of the phase-change material.
The embodiment also provides a preparation method of the temperature-regulating non-woven fabric, which comprises the following steps:
step 1, preparing a non-woven fabric complex by a spun-bonding method: polymerizing the high polymer under the condition of 120 ℃ without a solvent; granulating, and slicing at a constant temperature, wherein the slicing temperature is 55 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the slices into a screw press for heating at the heating temperature of 200 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling the filament tows at the cooling air temperature of 10 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, passing through a pre-press roller, and performing hot rolling reinforcement through a rolling mill at the temperature of 130 ℃ and the pressure of 10MPa, and winding and forming for later use;
step 2, preparing phase change material microcapsule powder by an in-situ polymerization method: mixing the capsule core, emulsifier Tween 20 and distilled water at a ratio of 1:0.04:4, stirring at 60 deg.C and 600rpm, and emulsifying for 30 min; slowly adding a capsule wall aqueous solution with the mass fraction of 30%, adjusting the pH to 2 by using 6M hydrochloric acid, controlling the process temperature to be 60 ℃, heating to 90 ℃ after forming microcapsules, keeping the temperature for 1h, washing with distilled water for 3 times, then performing suction filtration, and performing vacuum drying at the drying temperature of 60 ℃;
step 3, preparing the phase-change material into a microcapsule solution with the mass concentration of 10%;
step 4, putting the non-woven fabric composite into a microcapsule solution for soaking for 5s, and controlling the gram weight of the phase-change material to be 10 gsm;
step 5, removing redundant liquid on the surface after the dipping is finished and taking out, and drying and heat setting at the drying temperature of 80 ℃;
and 6, checking and coiling.
Comparative example
The non-woven fabric is a composite body and comprises 50% of polypropylene, 1% of slipping agent and polyolefin elastomer, wherein the polypropylene is used as a raw material, and the polyolefin elastomer is used as the rest raw material.
The non-woven fabric is prepared by adopting a spun-bonding method: polymerizing the high polymer under the condition of 160 ℃ without a solvent; granulating, and slicing at a constant temperature, wherein the slicing temperature is 70 ℃; slicing, cleaning, removing impurities, drying, dehydrating, heating in a screw press at 220 deg.C to obtain a solution, extruding filaments through a spinneret plate, cooling the filaments in a cold box at 30 deg.C, cooling, drafting, uniformly laying the drafted filaments on a web former, hot rolling and reinforcing with a pre-press roller and a rolling mill at 160 deg.C and 4MPa, and winding.
The temperature-regulating nonwoven fabrics prepared in the above examples 1 to 5 and comparative examples were tested for performance according to the evaluation of the phase-change temperature-regulating microcapsules for weaving and their application functions in T/CTES 1005-2017, and the test results are as follows:
TABLE 1 endothermic temperature Change
Figure BDA0003547915520000071
TABLE 2 evaluation of effects
Figure BDA0003547915520000072
Figure BDA0003547915520000081
As can be seen from tables 1 and 2, the temperature-adjusting non-woven fabric prepared by the embodiment of the invention has excellent performance at 20-45 ℃, has good heat absorption effect, and can maintain the temperature at a relatively constant level due to the heat absorption effect when the body surface temperature is high; the temperature adjusting performance of the phase-change microcapsules is related to the effective content, the performance is better when the temperature adjusting performance is more than 30gsm, and the performance is poorer when the temperature adjusting performance is less than or equal to 20 gsm.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The temperature-regulating non-woven fabric is characterized by comprising the non-woven fabric and a phase-change microcapsule, wherein the non-woven fabric can be a double-layer or three-layer complex, the phase-change microcapsule is a phase-change material, and the phase-change material consists of a capsule wall and a capsule core.
2. The temperature-regulating non-woven fabric according to claim 1, wherein the non-woven fabric composite consists of 50-70% of polypropylene, 1-4% of slipping agent and polyolefin elastomer as the rest raw materials.
3. The temperature-regulating non-woven fabric according to claim 1, wherein the capsule wall of the phase-change material is one of polyurethane resin, melamine-modified urea resin or melamine-formaldehyde resin, and the capsule core is one of paraffin or gelatin, wherein the capsule wall raw material accounts for 60-80% of the mass fraction of the phase-change material, and the capsule core raw material accounts for 20-40% of the mass fraction of the phase-change material.
4. The temperature-adjusting non-woven fabric according to claim 1, wherein the grain diameter of the phase-change material capsule core is 0.5-2.0 μm, and the enthalpy value is greater than or equal to 150 kJ/kg.
5. The preparation method of the temperature-regulating non-woven fabric is characterized by comprising the following steps of:
step 1, preparing a non-woven fabric complex by a spun-bonding method;
step 2, preparing phase-change material microcapsule powder;
step 3, preparing the phase-change material into a microcapsule solution;
step 4, putting the non-woven fabric complex into a microcapsule solution for soaking;
step 5, removing excessive liquid on the surface after the dipping is finished and taking out, and drying and heat setting;
and 6, checking and coiling.
6. The preparation method of the temperature-regulating non-woven fabric according to claim 5, wherein in the step 1, a non-woven fabric composite is prepared by a spun-bond method, and a high polymer is polymerized in the absence of a solvent, wherein the polymerization condition is 120-160 ℃; granulating, and slicing at a constant temperature, wherein the slicing temperature is 55-70 ℃; cleaning and removing impurities after slicing, drying and dehydrating, feeding the obtained product into a screw press for heating at the temperature of 200-220 ℃ to prepare a solution, extruding filaments through a spinneret plate, passing the filament tows through a cold box, cooling at the temperature of 10-30 ℃, cooling and drafting, uniformly laying the drafted filaments on a web former, performing hot rolling reinforcement through a pre-pressing roller and a rolling mill at the temperature of 130-160 ℃ and under the pressure of 4-10 Mpa, and winding and forming for later use.
7. The preparation method of the temperature-regulating non-woven fabric according to claim 5, wherein the phase-change material microcapsule powder in the step 2 is prepared by an in-situ polymerization method, and the capsule core, the emulsifier Tween 20 and distilled water are mixed according to a ratio of 1:0.04:4, stirred at a temperature of 60-80 ℃, stirred at a rotating speed of 600-1000 rpm, and emulsified for 20-30 min; and slowly adding a capsule wall water solution with the mass fraction of 30-50%, adjusting the pH to 2-4 by using 6M hydrochloric acid, controlling the process temperature to be 60-80 ℃, heating to 90 ℃ after forming the microcapsule, keeping the temperature for 1-2 hours, washing for 2-3 times by using distilled water, performing suction filtration, and performing vacuum drying at the drying temperature of 60-80 ℃.
8. The preparation method of the temperature-regulating non-woven fabric according to claim 5, wherein the mass concentration of the microcapsule solution prepared in the step 3 is 10-30%.
9. The preparation method of the temperature-regulating non-woven fabric according to claim 5, wherein the dipping time in the step 4 is 5-10 s, and the gram weight of the phase-change material is controlled to be 10-50 gsm.
10. The preparation method of the temperature-regulating non-woven fabric according to claim 5, wherein the drying temperature in the step 5 is 80-120 ℃.
CN202210253472.2A 2022-03-15 2022-03-15 Temperature-adjusting non-woven fabric and preparation method thereof Pending CN114687076A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233342A (en) * 2005-02-22 2006-09-07 Miki Riken Kogyo Kk Heat storage microcapsule suitable for fiber treatment and fiber using the same
CN102677471A (en) * 2012-05-29 2012-09-19 东华大学 Method for preparing temperature regulation textile by sol-gel technology
CN103806285A (en) * 2013-10-11 2014-05-21 天津市中科健新材料技术有限公司 Method for manufacturing constant-temperature non-woven cloth for sanitary product
CN110042671A (en) * 2019-04-24 2019-07-23 中原工学院 A kind of preparation method of the non-woven cloth with heat-accumulation temperature-adjustment and antibacterial functions
CN110965335A (en) * 2019-12-27 2020-04-07 江苏华峰超纤材料有限公司 Polyurethane resin immersion liquid and microfiber base fabric for intelligent temperature-adjusting clothes and preparation method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233342A (en) * 2005-02-22 2006-09-07 Miki Riken Kogyo Kk Heat storage microcapsule suitable for fiber treatment and fiber using the same
CN102677471A (en) * 2012-05-29 2012-09-19 东华大学 Method for preparing temperature regulation textile by sol-gel technology
CN103806285A (en) * 2013-10-11 2014-05-21 天津市中科健新材料技术有限公司 Method for manufacturing constant-temperature non-woven cloth for sanitary product
CN110042671A (en) * 2019-04-24 2019-07-23 中原工学院 A kind of preparation method of the non-woven cloth with heat-accumulation temperature-adjustment and antibacterial functions
CN110965335A (en) * 2019-12-27 2020-04-07 江苏华峰超纤材料有限公司 Polyurethane resin immersion liquid and microfiber base fabric for intelligent temperature-adjusting clothes and preparation method

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