Soft light-blocking NANO polymer fabric and preparation process therefor

Abstract

The present invention relates to the technical field of high polymer fabrics, in particular to a soft light-blocking nano polymer fabric and a preparation process therefor. According to the preparation process, a chemical fiber cloth is selected as a base cloth layer, and after white coating and black coating, a layer of chemical fiber cloth is also polymerized on the other surface by means of hot pressing, such that both the front and back surfaces of the light-blocking fabric are chemical fiber cloths. Compared with a hard rubber layer coated on a surface of light-blocking fabrics in the related technology, the soft light-blocking nano polymer fabric prepared according to the present invention has advantages such as a soft feel, resistance to abrasion, resistance to thermal contraction, good lightfastness in the sun, and a low likelihood of fading in sunlight. Moreover, the chemical fiber cloth is polymerized by means of a high temperature and high pressure, such that a second high polymeric foamed white-coating layer and a chemical active functional group of the chemical fiber cloth undergo a polymerization reaction, thus firmly connecting the chemical fiber cloths on the front and back surfaces by means of chemical polymerization, and thus providing the soft light-blocking nano polymer fabric with an advantage of excellent tearing strength.

Description

Nanometer soft polymeric sunshade fabric and preparation process thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of high-molecular polymeric fabric, in particular to a nanometer soft polymeric sunshade fabric and a preparation process thereof. BACKGROUND

[0002] Sunshade fabric, also known as sunshade fabric, has the characteristics of blocking light and changing light environment, and is a functional auxiliary fabric. In places such as bedrooms and theaters where light blocking requirements are high, good performance sunshade fabric is usually required.

[0003] The existing sunshade fabric includes coated sunshade cloth, multi-layer woven sunshade cloth, and jacquard sunshade cloth. Among them, the coated sunshade cloth blocks the gap between the yarns of the fabric by coating to achieve the sunshade effect. The multi-layer woven sunshade cloth has a black silk layer in the middle layer to reduce the sunshade rate of the fabric, but the weaving process is relatively complex. The jacquard sunshade cloth improves the sunshade performance of the fabric by increasing the tightness of the fabric and reducing the porosity, but the tightness of the yarns decreases after washing, and the sunshade performance decreases.

[0004] At present, the coated sunshade cloth is more commonly used among the above-mentioned sunshade fabrics. However, the coated sunshade cloth in the prior art has the defects of hard feeling, poor scratch resistance, poor wear resistance, poor cold shrinkage resistance, easy scratching or abrasion, and poor sunlight fastness due to the hard glue layer on the surface. When the sunshade fabric is irradiated for a long time, light fading and other phenomena are prone to occur. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the first object of the present application is to provide a preparation process of a nanometer soft polymeric sunshade fabric, which has the advantages of soft feeling, scratch resistance, wear resistance, cold shrinkage resistance, good sunlight fastness, and no light fading and other phenomena.

[0006] The second object of the present application is to provide a nanometer soft polymeric sunshade fabric, which has the advantages of soft feeling, scratch resistance, wear resistance, and good sunlight fastness, and is not prone to light fading and other phenomena.

[0007] In order to achieve the first object of the present application, the technical solution adopted by the present application is as follows:

[0008] The present application provides a preparation process of a nanometer soft polymeric sunshade fabric, comprising the following steps:

[0009] S1, selecting a chemical fiber cloth as a base fabric layer;

[0010] S2, coating a nano high molecular foaming white coating emulsion on one side of the chemical fiber cloth, and forming a first high molecular foaming white coating layer after drying;

[0011] S3, coating a nano high molecular foaming black coating emulsion on the surface of the first high molecular foaming white coating layer, and forming a first high molecular foaming black coating layer after drying;

[0012] S4, coating a high molecular foaming white coating emulsion on the surface of the first high molecular foaming black coating layer, and forming a second high molecular foaming white coating layer after drying;

[0013] S5, polymerizing the chemical fiber cloth: polymerizing a layer of chemical fiber cloth on the surface of the second high molecular foaming white coating layer through hot pressing, so as to obtain the nano soft feeling polymerized shading fabric.

[0014] The preparation process of the nano soft feeling polymerized shading fabric of the application selects chemical fiber cloth as the base cloth layer, and after coating white and black, a layer of chemical fiber cloth is also polymerized on the other side through hot pressing, so that the front and back of the shading fabric are both chemical fiber cloth. Compared with the hard glue layer on the surface of the shading fabric in the prior art, the nano soft feeling polymerized shading fabric of the application has the advantages of soft hand feeling, scratch and wear resistance, cold shrinkage resistance, good sunlight fastness, and less light fading and other phenomena. In addition, the second high molecular foaming white coating layer and the chemical active functional groups of the chemical fiber cloth of the base cloth layer are polymerized through high temperature and high pressure, and at the same time, the chemical active functional groups of the first high molecular foaming white coating layer and the chemical fiber cloth of the base cloth layer are further polymerized under the condition of high temperature and high pressure, so that the chemical fiber cloth on the front and back is firmly connected through chemical polymerization, and the nano soft feeling polymerized shading fabric has the advantage of excellent tear resistance.

[0015] Further, between S3 and S4, S3-2, coating a nano high molecular foaming black coating emulsion on the surface of the first high molecular foaming black coating layer again, and forming a second high molecular foaming black coating layer after drying;

[0016] The second high molecular foaming white coating layer is coated on the surface of the second high molecular foaming black coating layer.

[0017] Among them, by coating the second high molecular foaming black coating layer, the nano soft feeling polymerized shading fabric can be ensured not to leak light and have better shading performance.

[0018] Further, after the step S5, S6, the nano soft feeling polymerized shading fabric obtained is subjected to steam setting; and / or

[0019] The temperature of the steam setting is 120℃-130℃, and the time of the steam setting is 15min-20min.

[0020] Further, the fabric is subjected to steam setting, which can enhance the strength, durability and wrinkle resistance of the nano-soft polymer sunshade fabric, thereby making the sunshade fabric have better shape stability and mechanical properties.

[0021] Further, in the S5 step of polymerizing the chemical fiber cloth, the hot-pressing polymerization is performed under high temperature and high pressure to press the chemical fiber cloth onto the surface of the second high-molecular foamed white coating layer, so that the surface of the chemical fiber cloth is connected to the surface of the second high-molecular foamed white coating layer through polymerization reaction.

[0022] Further, the temperature of the hot-pressing polymerization is 180-200℃, the time of the hot-pressing polymerization is 1-2min, and the pressure of the hot-pressing polymerization is 30-60 tons.

[0023] Further, the chemical fiber cloth comprises one or a combination of two or more of polyester, spandex, nylon, polypropylene, acrylic or polyester fiber. The chemical fiber cloth contains chemical active functional groups including hydroxyl, amino, carbonyl, etc.

[0024] Further, the nano high-molecular foamed white coating emulsion is prepared by mixing 45-55 parts by weight of polyacrylic acid, 20-30 parts by weight of polyvinyl acetate adhesive, 15-20 parts by weight of titanium white slurry and 20-30 parts by weight of water; and / or

[0025] The nano high-molecular foamed black coating emulsion is prepared by mixing 45-55 parts by weight of polyacrylic acid, 20-30 parts by weight of polyvinyl acetate adhesive, 5-10 parts by weight of titanium white slurry, 10-15 parts by weight of carbon black and 20-30 parts by weight of water.

[0026] Further, the nano high-molecular foamed white coating emulsion and the nano high-molecular foamed black coating emulsion both contain polyacrylic acid and polyvinyl acetate adhesive high-molecular compounds, thereby making the formed high-molecular foamed white coating layer and the high-molecular foamed black coating layer have good cross-linking strength, and enabling the high-molecular foamed white coating layer to be chemically polymerized with the chemical fiber cloth under high temperature and high pressure to be firmly connected.

[0027] Further, the nano high-molecular foamed white coating emulsion and the nano high-molecular foamed black coating emulsion have a particle size of 1-100nm. The nano-particle size high-molecular foamed white coating emulsion and the high-molecular foamed black coating emulsion have better stability and coating performance.

[0028] Further, the polyacrylic acid has a molecular weight of 140,000-160,000; the polyacrylic acid with the molecular weight can cross-link with the polyvinyl acetate adhesive to form a good network structure, and the network structure can be firmly combined with the chemical fiber cloth through high-temperature and high-pressure chemical polymerization.

[0029] and / or

[0030] The polyvinyl acetate adhesive has a molecular weight of 110,000-130,000; the polyvinyl acetate adhesive with the molecular weight can cross-link with the polyacrylic acid to form a good network structure, and the network structure can be firmly combined with the chemical fiber cloth through high-temperature and high-pressure chemical polymerization.

[0031] Further, the drying temperature in the S2, S3 and S4 steps is 150-160 DEG C, and the drying time is 1-2 min; the drying temperature and time conditions can make the polyacrylic acid cross-link with the polyvinyl acetate adhesive to form a good network structure coating.

[0032] To achieve the second object of the present application, the technical scheme adopted by the present application is as follows:

[0033] The present application provides a kind of nano soft feeling polymer sunscreen fabric, which is prepared by the preparation process of the nano soft feeling polymer sunscreen fabric described above. The nano soft feeling polymer sunscreen fabric has the advantages of soft hand feeling, scratch and wear resistance, good sunlight fastness, and is not easy to appear light fading and other phenomena.

[0034] Compared with the prior art, the present application has the following advantages:

[0035] (1) The preparation process of the nano soft feeling polymer sunscreen fabric of the present application uses chemical fiber cloth as the base cloth layer, and after coating white and black, another layer of chemical fiber cloth is polymerized on the other side through hot pressing, so that the front and back of the sunscreen fabric are both chemical fiber cloth. Compared with the hard glue layer on the surface of the sunscreen fabric of the prior art, the nano soft feeling polymer sunscreen fabric of the present application has the advantages of soft hand feeling, scratch and wear resistance, and cold shrinkage resistance. In addition, due to the good chemical stability of the chemical fiber cloth, the nano soft feeling polymer sunscreen fabric has the advantages of good sunlight fastness and is not easy to appear light fading and other phenomena.

[0036] (2) The preparation process of the nano soft feeling polymerized shading fabric, a layer of chemical fiber cloth is polymerized on the surface of the second high polymer foaming white coating layer through high temperature and high pressure, so that the chemical active functional groups of the second high polymer foaming white coating layer and the chemical fiber cloth occur polymerization reaction, at the same time, the chemical active functional groups of the first high polymer foaming white coating layer and the chemical fiber cloth of the base cloth layer further occur polymerization reaction under the high temperature and high pressure, and then the chemical fiber cloth on the front and back sides is firmly connected through chemical polymerization, and the nano soft feeling polymerized shading fabric has the advantage of excellent tear resistance.

[0037] (3) The preparation process of the nano soft feeling polymerized shading fabric, since the foaming white emulsion and the foaming black emulsion are both nano polymers, good stability and good crosslinking strength are achieved, and the high polymer foaming white coating layer can be firmly connected with the chemical fiber cloth through chemical polymerization under high temperature and high pressure.

[0038] (4) The preparation process of the nano soft feeling polymerized shading fabric has the characteristics of simple preparation method, high production efficiency and suitability for large-scale production.

[0039] (5) The nano soft feeling polymerized shading fabric has the advantages of soft hand feeling, scratch and wear resistance, good sunlight fastness, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0040] Fig. 1 is a screenshot of the outsourcing test of the tensile strength of the nano soft feeling polymerized shading fabric prepared in Example 1.

[0041] Fig. 2 is a screenshot of the outsourcing test result report of the tensile strength of the nano soft feeling polymerized shading fabric prepared in Example 1. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0043] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0044] In the embodiments of the present application, the preparation process of the nano soft feeling polymerized shading fabric includes the following steps:

[0045] S1, selecting a chemical fiber cloth as a base cloth layer;

[0046] S2, coating a nano high molecular foaming white coating emulsion on one side of the chemical fiber cloth, and forming a first high molecular foaming white coating layer after drying;

[0047] S3, coating a nano high molecular foaming black coating emulsion on the surface of the first high molecular foaming white coating layer, and forming a first high molecular foaming black coating layer after drying;

[0048] S4, coating a high molecular foaming white coating emulsion on the surface of the first high molecular foaming black coating layer, and forming a second high molecular foaming white coating layer after drying;

[0049] S5, polymerizing the chemical fiber cloth: polymerizing a layer of chemical fiber cloth on the surface of the second high molecular foaming white coating layer by hot pressing, thereby obtaining the nano soft feeling polymerized shading fabric.

[0050] The preparation process of the nano soft feeling polymerized shading fabric in the embodiment, since the chemical fiber cloth is selected as the base cloth layer, and after the white coating and the black coating, a layer of chemical fiber cloth is also polymerized on the other side by hot pressing, so that the front and back sides of the shading fabric are both chemical fiber cloth. Compared with the hard glue layer on the surface of the shading fabric in the prior art, the nano soft feeling polymerized shading fabric has the advantages of soft hand feeling, scratch and wear resistance, cold shrinkage resistance, good sunlight fastness, and less light fading and the like. In addition, the second high molecular foaming white coating layer and the chemical fiber cloth of the base cloth layer are polymerized by high temperature and high pressure, so that the chemical active functional groups of the second high molecular foaming white coating layer and the chemical fiber cloth of the base cloth layer are polymerized, and at the same time, the chemical active functional groups of the first high molecular foaming white coating layer and the chemical fiber cloth of the base cloth layer are further polymerized under the condition of high temperature and high pressure, thereby the chemical fiber cloth on the front and back sides is firmly connected by chemical polymerization, and the nano soft feeling polymerized shading fabric has the advantage of excellent tear resistance.

[0051] In some embodiments, between S3 and S4, S3-2, coating a nano high molecular foaming black coating emulsion on the surface of the first high molecular foaming black coating layer again, and forming a second high molecular foaming black coating layer after drying;

[0052] The second high molecular foaming white coating layer is coated on the surface of the second high molecular foaming black coating layer.

[0053] The second high molecular foaming black coating layer is coated on the surface of the second high molecular foaming white coating layer.

[0054] In some embodiments, after S5, S6, the nano soft feeling polymerized shading fabric is subjected to steam setting; and / or

[0055] The temperature of the steam setting is 120℃-130℃, and the time of the steam setting is 15min-20min.

[0056] Further steam setting of the fabric can enhance the strength, durability and wrinkle resistance of the nano soft-feeling polymer sunscreen fabric, thereby making the sunscreen fabric have better morphological stability and mechanical properties.

[0057] In some embodiments, in the S5 step of polymerizing the chemical fiber cloth, the hot-press polymerization is to press the chemical fiber cloth onto the surface of the second high-molecular foam white coating layer under high temperature and high pressure, so that the surface of the chemical fiber cloth and the surface of the second high-molecular foam white coating layer are connected by polymerization reaction.

[0058] In some embodiments, the temperature of the hot-press polymerization is 180℃-200℃, the time of the hot-press polymerization is 1min-2min, and the pressure of the hot-press polymerization is 30 tons-60 tons.

[0059] In some embodiments, the chemical fiber cloth comprises one or a combination of two or more of polyester, spandex, nylon, polypropylene, acrylic or polyester fiber. The chemical fiber cloth contains chemical active functional groups including hydroxyl, amino, carbonyl, etc.

[0060] In some embodiments, the nano high-molecular foam white coating emulsion is prepared by mixing 45-55 parts by weight of polyacrylic acid, 20-30 parts of polyvinyl acetate adhesive, 15-20 parts of titanium white slurry, and 20-30 parts of water; and / or

[0061] The nano high-molecular foam black coating emulsion is prepared by mixing 45-55 parts by weight of polyacrylic acid, 20-30 parts of polyvinyl acetate adhesive, 5-10 parts of titanium white slurry, 10-15 parts of carbon black, and 20-30 parts of water.

[0062] The nano high-molecular foam white coating emulsion and the nano high-molecular foam black coating emulsion both contain polyacrylic acid and polyvinyl acetate adhesive high-molecular compounds, thereby making the formed high-molecular foam white coating layer and the high-molecular foam black coating layer have good cross-linking strength, and enabling the high-molecular foam white coating layer to be chemically polymerized with the chemical fiber cloth under high temperature and high pressure to be firmly connected.

[0063] The particle size of the nano high-molecular foam white coating emulsion and the nano high-molecular foam black coating emulsion is 1nm-100nm. The nano-particle-size high-molecular foam white coating emulsion and the high-molecular foam black coating emulsion have better stability and coating performance.

[0064] In some embodiments, the molecular weight of the polyacrylic acid is 140,000-160,000; the polyacrylic acid with the molecular weight can cross-link with the polyvinyl acetate adhesive to form a good network structure, which can be firmly combined with the chemical fiber cloth through high-temperature and high-pressure chemical polymerization.

[0065] and / or

[0066] The molecular weight of the polyvinyl acetate adhesive is 110,000-130,000. The polyvinyl acetate adhesive with the molecular weight can cross-link with the polyacrylic acid to form a good network structure, which can be firmly combined with the chemical fiber cloth through high-temperature and high-pressure chemical polymerization.

[0067] In some embodiments, the drying temperature in the S2, S3 and S4 steps is 150-160℃, and the drying time is 1-2 min. The drying temperature and time conditions can make the polyacrylic acid cross-link with the polyvinyl acetate adhesive to form a good network structure coating.

[0068] In the embodiment of the present application, a nano-soft polymeric shading fabric is prepared by the preparation process of the nano-soft polymeric shading fabric. The nano-soft polymeric shading fabric has the advantages of soft hand feeling, scratch and wear resistance, good sunlight fastness, and is not easy to appear light fading and the like.

[0069] The following will be described in conjunction with specific embodiments.

[0070] Embodiment 1

[0071] A preparation process of a nano-soft polymeric shading fabric, characterized by comprising the following steps:

[0072] S1, selecting a chemical fiber cloth as a base cloth layer;

[0073] S2, coating a nano-molecular foaming white emulsion on one side of the chemical fiber cloth, and forming a first molecular foaming white layer after drying at 155℃ for 1.5 min;

[0074] S3, coating a nano-molecular foaming black emulsion on the surface of the first molecular foaming white layer, and forming a first molecular foaming black layer after drying at 155℃ for 1.5 min; in the embodiment, the nano-molecular foaming black emulsion is prepared by mixing and homogenizing 50 parts of polyacrylic acid, 25 parts of polyvinyl acetate adhesive, 8 parts of titanium white slurry, 13 parts of carbon black and 25 parts of water.

[0075] S4, coating a nano-molecular foaming white emulsion on the surface of the first molecular foaming black layer, and forming a second molecular foaming white layer after drying at 155℃ for 1.5 min;

[0076] In the embodiment, the nano high polymer foaming white coating emulsion is prepared by mixing and homogenizing 50 parts of polyacrylic acid, 25 parts of polyvinyl acetate adhesive, 18 parts of titanium white slurry and 25 parts of water;

[0077] In the embodiment, the molecular weight of the polyacrylic acid is 150,000; and the molecular weight of the polyvinyl acetate adhesive is 120,000.

[0078] S5, polymerizing the chemical fiber cloth: polymerizing a layer of chemical fiber cloth on the surface of the second high polymer foaming white coating layer by hot pressing, to obtain the nano soft polymer shading fabric. The hot pressing polymerization in this step is to press the chemical fiber cloth on the surface of the second high polymer foaming white coating layer under high temperature and high pressure, so that the surface of the chemical fiber cloth is connected to the surface of the second high polymer foaming white coating layer by polymerization reaction. In the embodiment, the temperature of the hot pressing polymerization is 190°C, the time of the hot pressing polymerization is 1.5 min, and the pressure of the hot pressing polymerization is 45 tons.

[0079] In the embodiment, the chemical fiber cloth comprises a combination of polyester and spandex.

[0080] Embodiment 2

[0081] A preparation process of a nano soft polymer shading fabric, characterized in that it comprises the following steps:

[0082] S1, selecting a chemical fiber cloth as the base cloth layer;

[0083] S2, coating a nano high polymer foaming white coating emulsion on one side of the chemical fiber cloth, and forming a first high polymer foaming white coating layer after drying at 150°C for 2 min;

[0084] S3, coating a nano high polymer foaming black coating emulsion on the surface of the first high polymer foaming white coating layer, and forming a first high polymer foaming black coating layer after drying at 150°C for 2 min. In the embodiment, the nano high polymer foaming black coating emulsion is prepared by mixing and homogenizing 45 parts of polyacrylic acid, 20 parts of polyvinyl acetate adhesive, 5 parts of titanium white slurry, 10 parts of carbon black and 20 parts of water.

[0085] S3-2, coating the nano high polymer foaming black coating emulsion again on the surface of the first high polymer foaming black coating layer, and forming a second high polymer foaming black coating layer after drying at 150°C for 2 min;

[0086] S4, coating a nano high polymer foaming white coating emulsion on the surface of the second high polymer foaming black coating layer, and forming a second high polymer foaming white coating layer after drying at 150°C for 2 min;

[0087] In the embodiment, the nano high polymer foaming white coating emulsion is prepared by mixing and homogenizing 45 parts of polyacrylic acid, 20 parts of polyvinyl acetate adhesive, 15 parts of titanium white slurry and 20 parts of water;

[0088] In the embodiment, the molecular weight of the polyacrylic acid is 140,000; and the molecular weight of the polyvinyl acetate adhesive is 110,000.

[0089] S5, polymerizing the chemical fiber cloth: polymerizing a layer of chemical fiber cloth on the surface of the second high polymer foaming white coating layer by hot pressing, to obtain the nano soft polymer shading fabric. The hot pressing polymerization in this step is to press the chemical fiber cloth on the surface of the second high polymer foaming white coating layer under high temperature and high pressure, so that the surface of the chemical fiber cloth is connected to the surface of the second high polymer foaming white coating layer by polymerization reaction. In the embodiment, the temperature of the hot pressing polymerization is 180°C, the time of the hot pressing polymerization is 2 minutes, and the pressure of the hot pressing polymerization is 60 tons.

[0090] In the embodiment, the chemical fiber cloth is made of a combination of polyester, spandex and nylon.

[0091] Embodiment 3

[0092] A preparation process of a nano soft polymer shading fabric, characterized in that it comprises the following steps:

[0093] S1, selecting a chemical fiber cloth as the base cloth layer;

[0094] S2, coating the nano high polymer foaming white coating emulsion on one side of the chemical fiber cloth, and forming the first high polymer foaming white coating layer after drying at 160°C for 1 minute;

[0095] S3, coating the nano high polymer foaming black coating emulsion on the surface of the first high polymer foaming white coating layer, and forming the first high polymer foaming black coating layer after drying at 160°C for 1 minute. In the embodiment, the nano high polymer foaming black coating emulsion is prepared by mixing and homogenizing 55 parts of polyacrylic acid, 30 parts of polyvinyl acetate adhesive, 10 parts of titanium white slurry, 15 parts of carbon black and 30 parts of water.

[0096] S4, coating the nano high polymer foaming white coating emulsion on the surface of the first high polymer foaming black coating layer, and forming the second high polymer foaming white coating layer after drying at 160°C for 1 minute;

[0097] In the embodiment, the nano high polymer foaming white coating emulsion is prepared by mixing and homogenizing 55 parts of polyacrylic acid, 30 parts of polyvinyl acetate adhesive, 20 parts of titanium white slurry and 30 parts of water.

[0098] In the embodiment, the molecular weight of the polyacrylic acid is 160,000; and the molecular weight of the polyvinyl acetate adhesive is 130,000.

[0099] S5, polymerizing the chemical fiber cloth: polymerizing a layer of chemical fiber cloth on the surface of the second high-molecular foaming white coating layer by hot pressing, so as to obtain a nano-soft polymer shading fabric. The hot pressing polymerization in this step is to press the chemical fiber cloth on the surface of the second high-molecular foaming white coating layer under high temperature and high pressure, so that the surface of the chemical fiber cloth is connected to the surface of the second high-molecular foaming white coating layer by polymerization reaction. In this embodiment, the temperature of the hot pressing polymerization is 200°C, the time of the hot pressing polymerization is 1 min, and the pressure of the hot pressing polymerization is 30 tons.

[0100] S6, steam setting the nano-soft polymer shading fabric obtained; in this embodiment, the temperature of the steam setting is 125°C, and the time of the steam setting is 18 min.

[0101] In this embodiment, the chemical fiber cloth includes a chemical fiber cloth made of a combination of polyester and polyester fiber.

[0102] Embodiment 4

[0103] A preparation process of a nano-soft polymer shading fabric, characterized in that it comprises the following steps:

[0104] S1, selecting a chemical fiber cloth as a base cloth layer;

[0105] S2, applying a nano high-molecular foaming white coating emulsion on one side of the chemical fiber cloth, and forming a first high-molecular foaming white coating layer after drying at 152°C for 1.8 min;

[0106] S3, applying a nano high-molecular foaming black coating emulsion on the surface of the first high-molecular foaming white coating layer, and forming a first high-molecular foaming black coating layer after drying at 152°C for 1.8 min; in this embodiment, the nano high-molecular foaming black coating emulsion is prepared by mixing and homogenizing 48 parts of polyacrylic acid, 26 parts of polyvinyl acetate adhesive, 6 parts of titanium white slurry, 14 parts of carbon black, and 23 parts of water.

[0107] S3-2, applying the nano high-molecular foaming black coating emulsion again on the surface of the first high-molecular foaming black coating layer, and forming a second high-molecular foaming black coating layer after drying at 152°C for 1.8 min;

[0108] S4, applying a nano high-molecular foaming white coating emulsion on the surface of the second high-molecular foaming black coating layer, and forming a second high-molecular foaming white coating layer after drying at 152°C for 1.8 min;

[0109] In this embodiment, the nano high-molecular foaming white coating emulsion is prepared by mixing and homogenizing 47 parts of polyacrylic acid, 24 parts of polyvinyl acetate adhesive, 16 parts of titanium white slurry, and 28 parts of water;

[0110] The polyacrylic acid has a molecular weight of 145,000 in the embodiment, and the polyvinyl acetate adhesive has a molecular weight of 115,000.

[0111] S5, polymerizing the chemical fiber cloth: a layer of chemical fiber cloth is polymerized on the surface of the second high-molecular foam white coating layer by hot pressing, so as to obtain a nano-soft polymer sunscreen fabric. The hot pressing polymerization in this step is to press the chemical fiber cloth on the surface of the second high-molecular foam white coating layer under high temperature and high pressure, so that the surface of the chemical fiber cloth is connected to the surface of the second high-molecular foam white coating layer by polymerization reaction. In the embodiment, the hot pressing polymerization temperature is 185°C, the hot pressing polymerization time is 1.8 min, and the hot pressing polymerization pressure is 50 tons.

[0112] S6, steam setting the nano-soft polymer sunscreen fabric obtained; in the embodiment, the steam setting temperature is 120°C, and the steam setting time is 20 min.

[0113] In the embodiment, the chemical fiber cloth is a chemical fiber cloth made of polyester.

[0114] Embodiment 5

[0115] A preparation process of a nano-soft polymer sunscreen fabric, characterized in that it comprises the following steps:

[0116] S1, selecting a chemical fiber cloth as a base cloth layer;

[0117] S2, applying a nano high-molecular foam white coating emulsion on one side of the chemical fiber cloth, and forming a first high-molecular foam white coating layer after drying at 157°C for 1.2 min;

[0118] S3, applying a nano high-molecular foam black coating emulsion on the surface of the first high-molecular foam white coating layer, and forming a first high-molecular foam black coating layer after drying at 157°C for 1.2 min; in the embodiment, the nano high-molecular foam black coating emulsion is prepared by mixing and homogenizing 52 parts of polyacrylic acid, 24 parts of polyvinyl acetate adhesive, 8 parts of titanium white slurry, 13 parts of carbon black, and 29 parts of water.

[0119] S3-2, applying the nano high-molecular foam black coating emulsion again on the surface of the first high-molecular foam black coating layer, and forming a second high-molecular foam black coating layer after drying at 157°C for 1.2 min;

[0120] S4, applying a nano high-molecular foam white coating emulsion on the surface of the second high-molecular foam black coating layer, and forming a second high-molecular foam white coating layer after drying at 157°C for 1.2 min;

[0121] In the embodiment, the nano high polymer foaming white coating emulsion is prepared by mixing and homogenizing 46 parts of polyacrylic acid, 27 parts of polyvinyl acetate adhesive, 16 parts of titanium white slurry and 28 parts of water;

[0122] In the embodiment, the molecular weight of the polyacrylic acid is 155,000; and the molecular weight of the polyvinyl acetate adhesive is 125,000.

[0123] S5, polymerizing the chemical fiber cloth: a layer of chemical fiber cloth is polymerized on the surface of the second high polymer foaming white coating layer by hot pressing, so as to obtain the nano soft polymer shading fabric. The hot pressing polymerization in this step is to press the chemical fiber cloth on the surface of the second high polymer foaming white coating layer under high temperature and high pressure, so that the surface of the chemical fiber cloth is connected to the surface of the second high polymer foaming white coating layer by polymerization reaction. In the embodiment, the temperature of the hot pressing polymerization is 195℃, the time of the hot pressing polymerization is 1.2 min, and the pressure of the hot pressing polymerization is 30 tons.

[0124] S6, steam setting the nano soft polymer shading fabric obtained; in the embodiment, the temperature of the steam setting is 130℃, and the time of the steam setting is 15 min.

[0125] In the embodiment, the chemical fiber cloth includes a combination of polyester, nylon and polypropylene.

[0126] Embodiment 6

[0127] A preparation process of a nano soft polymer shading fabric, characterized in that it comprises the following steps:

[0128] S1, selecting a chemical fiber cloth as a base cloth layer;

[0129] S2, coating a nano high polymer foaming white coating emulsion on one side of the chemical fiber cloth, and forming a first high polymer foaming white coating layer after drying at 156℃ for 1.4 min;

[0130] S3, coating a nano high polymer foaming black coating emulsion on the surface of the first high polymer foaming white coating layer, and forming a first high polymer foaming black coating layer after drying at 156℃ for 1.4 min; in the embodiment, the nano high polymer foaming black coating emulsion is prepared by mixing and homogenizing 48 parts of polyacrylic acid, 22 parts of polyvinyl acetate adhesive, 7 parts of titanium white slurry, 12 parts of carbon black and 24 parts of water.

[0131] S3-2, coating the nano high polymer foaming black coating emulsion again on the surface of the first high polymer foaming black coating layer, and forming a second high polymer foaming black coating layer after drying at 156℃ for 1.4 min;

[0132] S4, coating a nano high polymer foaming white coating emulsion on the surface of the second high polymer foaming black coating, and drying at 156°C for 1.4 min to form a second high polymer foaming white coating;

[0133] In this embodiment, the nano high polymer foaming white coating emulsion is prepared by mixing and homogenizing 53 parts of polyacrylic acid, 28 parts of polyvinyl acetate adhesive, 16 parts of titanium white slurry, and 28 parts of water;

[0134] In this embodiment, the molecular weight of the polyacrylic acid is 152,000; the molecular weight of the polyvinyl acetate adhesive is 127,000;

[0135] S5, polymerizing a chemical fiber cloth: polymerizing a chemical fiber cloth on the surface of the second high polymer foaming white coating by hot pressing, to obtain a nano soft polymer sunscreen fabric. The hot pressing polymerization in this step is to press the chemical fiber cloth onto the surface of the second high polymer foaming white coating under high temperature and high pressure, so that the surface of the chemical fiber cloth and the surface of the second high polymer foaming white coating are connected by polymerization reaction. In this embodiment, the hot pressing polymerization temperature is 198°C, the hot pressing polymerization time is 1.3 min, and the hot pressing polymerization pressure is 35 tons.

[0136] S6, steam setting the nano soft polymer sunscreen fabric obtained; in this embodiment, the steam setting temperature is 123°C, and the steam setting time is 19 min.

[0137] In this embodiment, the chemical fiber cloth includes a combination of spandex, nylon, and acrylic.

[0138] Comparative Example 1

[0139] A preparation process of a sunscreen fabric, comparative example 1 is different from example 1 in that, after step S4, instead of polymerizing a chemical fiber cloth, a layer of hard glue layer is brushed on the surface of the second high polymer foaming white coating. The hard glue layer is prepared by mixing 96 parts of acrylic emulsion and 4 parts of stiffening agent to form a hard glue solution, and then coating and drying.

[0140] Experimental test

[0141] The sunscreen fabrics obtained in examples 1-6 and comparative example 1 are tested for scratch resistance, wear resistance, sunlight fastness, tensile strength, tear resistance, air permeability, and cold shrinkage resistance. Among them, the scratch resistance, wear resistance, and sunlight fastness of the sunscreen fabric of comparative example 1 are tested on the side of the hard glue layer.

[0142] The scratch resistance is detected according to the national standard GBT9286-1998 "Paint film scratch test of color paint and varnish". The abrasion resistance is detected according to the national standard GB / T 21196 "Textiles - Determination of the abrasion resistance of fabrics by the Martindale method". The light fastness is detected according to the national standard GB / T 8427-2019 "Textiles - Colour fastness tests - Colour fastness to artificial light: Xenon arc". The tensile strength is detected according to the standard ISO 13934-2:2014 "Textiles - Determination of the tensile properties of fabrics - Part 2: Breaking force by the grab method". The tear strength is detected according to the national standard GB / T 3917.4-2009 "Textiles - Determination of the tear resistance of fabrics - Part 4: Determination of the tear resistance of tongue-shaped specimens (double-racked)". The air permeability is detected according to the national standard GB / T 5453-1997 "Textiles - Determination of the air permeability of fabrics".

[0143] The specific test method of the cold shrinkage resistance is as follows: after a sample with a length of 1 m is placed at a temperature of -12 ℃ for 180 h, the shrinkage degree of the sample is measured, and the shrinkage length is recorded.

[0144] The specific test results are shown in Table 1.

[0145] Table 1 Performance test of the sunscreen fabric of Examples 1-6 and Comparative Example 1

[0146]

[0147] The test conditions and test results of the tensile strength of the nano-soft polymer sunscreen fabric prepared in Example 1 are reported in FIGS. 1 and 2.

[0148] According to the performance test data in Table 1, the nano-soft polymer sunscreen fabric has excellent scratch resistance, abrasion resistance, light fastness, tensile strength, tear strength, air permeability and cold shrinkage resistance.

[0149] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A process for the preparation of nano-soft polymeric sun-protective fabric, characterized by, It comprises the following steps: S1, selecting chemical fiber cloth as the base cloth layer; S2, coating nano high molecular foaming white emulsion on one side of the chemical fiber cloth, and forming a first high molecular foaming white layer after drying; S3, coating nano high molecular foaming black emulsion on the surface of the first high molecular foaming white layer, and forming a first high molecular foaming black layer after drying; S4, coating nano high molecular foaming white emulsion on the surface of the first high molecular foaming black layer, and forming a second high molecular foaming white layer after drying; S5, polymerizing the chemical fiber cloth: polymerizing a layer of chemical fiber cloth on the surface of the second high molecular foaming white layer by hot pressing, thereby obtaining the nano soft feeling polymerized sunshade fabric.

2. The process for preparing nano-soft polymer sunshade fabric according to claim 1, characterized in that, Between S3 and S4, it further comprises S3-2, re-coating nano high molecular foaming black emulsion on the surface of the first high molecular foaming black layer, and forming a second high molecular foaming black layer after drying; The second high molecular foaming white layer is coated on the surface of the second high molecular foaming black layer.

3. The preparation process of the nano soft polymer light-shielding fabric according to claim 1, characterized in that: After S5, it further comprises S6, steam setting the obtained nano soft feeling polymerized sunshade fabric; and / or The temperature of the steam setting is 120-130℃, and the time of the steam setting is 15-20min.

4. The preparation process of the nano soft polymer light-shielding fabric according to claim 1, characterized in that: In the S5 step of polymerizing the chemical fiber cloth, the hot pressing polymerization is to press the chemical fiber cloth on the surface of the second high molecular foaming white layer under high temperature and high pressure, so that the surface of the chemical fiber cloth is connected to the surface of the second high molecular foaming white layer by polymerization reaction.

5. The process for preparing nano-soft polymeric sunshade fabric according to claim 4, wherein the fabric is stretched in the longitudinal direction and the transverse direction at the same time. The temperature of the hot pressing polymerization is 180-200℃, the time of the hot pressing polymerization is 1-2min, and the pressure of the hot pressing polymerization is 30-60 tons.

6. The preparation process of the nano soft polymer light-shielding fabric according to claim 1, characterized in that: The chemical fiber cloth comprises one of polyester, spandex, nylon, polypropylene, acrylic or polyester fiber or a combination of two or more thereof.

7. The preparation process of the nano soft polymer light-shielding fabric according to claim 1, characterized in that: The nano high molecular foaming white emulsion is prepared by mixing and homogenizing 45-55 parts of polyacrylic acid, 20-30 parts of polyvinyl acetate adhesive, 15-20 parts of titanium white slurry and 20-30 parts of water; and / or The nano high molecular foaming black emulsion is prepared by mixing and homogenizing 45-55 parts of polyacrylic acid, 20-30 parts of polyvinyl acetate adhesive, 5-10 parts of titanium white slurry, 10-15 parts of carbon black and 20-30 parts of water.

8. The process for preparing the nano soft-feel polymer light-shielding fabric according to claim 7, characterized in that: The molecular weight of the polyacrylic acid is 140-160 thousand; and / or The molecular weight of the polyvinyl acetate adhesive is 110-130 thousand.

9. The preparation process of the nano soft polymer light-shielding fabric according to claim 1, characterized in that: The drying temperature in the S2, S3 and S4 steps is 150-160℃, and the drying time is 1-2min.

10. A nanofelted polymeric shade fabric, characterized by, It is prepared by the preparation process of the nano soft feeling polymerized sunshade fabric according to any one of claims 1-9.

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