CN218779104U - Visual color changing woven cloth - Google Patents

Visual color changing woven cloth Download PDF

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CN218779104U
CN218779104U CN202222515326.0U CN202222515326U CN218779104U CN 218779104 U CN218779104 U CN 218779104U CN 202222515326 U CN202222515326 U CN 202222515326U CN 218779104 U CN218779104 U CN 218779104U
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color
resin layer
hydrophilic resin
changing
visual color
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廖瑞芬
赖信凯
唐儀君
郑国志
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Abstract

The utility model provides a vision color changes is weaved, contains the basilar part that is woven and is formed by first yarn, the book view portion that is woven and is formed by the second yarn to and set up the hydrophilic resin layer on book view portion, wherein the water contact angle of hydrophilic resin layer is not more than 60 degrees, and wherein the basilar part has first colour, rolls over view portion and has the second colour, and first colour is different with the second colour. The present disclosure provides a visual color changing woven fabric coated with a hydrophilic resin layer, which can have a good visual change effect at a vertical color development viewing angle or a horizontal color development viewing angle, and can pass the specifications of a water washing resistance and chlorine resistance test.

Description

Visual color changing woven cloth
Technical Field
The present disclosure relates to a visual color changing fabric.
Background
With the development of technology, the application of textiles in daily life is beginning to expand from the field of clothing wear to other fields. The application of the textile is more flexible, and various functional fabrics are continuously produced, such as functional fabrics with specific purposes of moisture absorption, sweat discharge, comfort, water washing resistance, appearance change and the like.
For example, U.S. patent application Ser. No. 16/275,593 discloses a breathable garment defining a torso portion and having a flap design attached to the torso portion, wherein the flap is woven from bicomponent yarns of a polyamide polymer and a terephthalate polymer, wherein the bicomponent yarns are textured to form a wave-like turn-up when the flap absorbs moisture; in addition, the front and back surfaces of the wing pieces are designed with different colors, and after the human body perspires, the hygroscopic wing pieces are turned and tilted to generate visual change of the color of the clothes. However, the US16/275,593 application is still limited by the flap tilting degree, has the disadvantages of not obvious visual change effect and limited color development visual angle, cannot achieve the effect of wide visual change of color development, and does not teach how to pass the water washing resistance and chlorine resistance test specification.
The TW202002829A application discloses a flap fabric including a base structure portion and a flap portion, and the flap portion preferably includes a composite fiber in which a polyester component and a polyamide component are bonded in a side-by-side or eccentric sheath-core manner, wherein the flap portion is movable by wetting, but the flap portion design thereof cannot provide a visual change effect, and the flap portion design cannot obtain a wide visual change in color, and does not teach passing of the specification of the water resistance and the chlorine resistance test.
The application of TW201615910A discloses a color-changeable fabric, wherein a knitting yarn loop is serially connected to a surface yarn loop and an inner yarn loop, which are pulled by external force, and the surface of the fabric is overlooked at the front position of the fabric to observe the color of the inner yarn partially exposed in the surface area of the fabric, so that the fabric has the disadvantages of unobvious visual change effect, limited color-rendering visual angle, and the like.
In addition, part of the fabrics are made of light and soft non-woven fabrics to manufacture a wavy turnover structure, but the non-woven fabrics have insufficient strength and elasticity, cannot bear water washing and are limited in application.
SUMMERY OF THE UTILITY MODEL
An embodiment of the present disclosure provides a visual color changing fabric including a base portion woven by first yarns, a fold portion woven by second yarns, and a hydrophilic resin layer disposed on the fold portion. The base part and the folding part are connected in a lifting and closing way through the connecting part, wherein the folding part at least partially covers the base part. The water contact angle of hydrophilic resin layer is not more than 60 degrees, and wherein, the basilar part has first colour, and the book scene portion has the second colour, and first colour is different with the second colour.
Another embodiment of the present disclosure provides a visual color changing fabric including a base portion woven from first yarns, a fold portion woven from second yarns, and a hydrophilic resin layer disposed on the fold portion. The folding part and the base part are formed by hot pressing the same grey cloth, and the folding part and the base part can be opened and closed and can be connected without a connecting part. The hydrophilic resin layer has a water contact angle of not more than 60 degrees, wherein the first yarns have a first color and the second yarns have a second color, and the first color is different from the second color.
In some embodiments, the folded scene portion comprises an outer page and an inner page connected with each other, the inner page faces the base portion, and the hydrophilic resin layer is coated on the outer page.
In some embodiments, the folded scene portion comprises an outer page and an inner page connected with each other, the inner page faces the base portion, and the hydrophilic resin layer is coated on the inner page.
In some embodiments, the folded scene portion comprises an outer page and an inner page connected with each other, the inner page faces the base portion, and the hydrophilic resin layer is coated on the inner page and the outer page.
In some embodiments, the tuck portion completely covers the base portion.
In some embodiments, the base portion is partially exposed from the fold away portion.
In some embodiments, the visual color-changing fabric has a horizontal color rendering viewing angle of up to 170 degrees.
In some embodiments, the viewing angle of the vertical color rendering of the visual color changing fabric can be up to 120 degrees.
The coverage of the hydrophilic resin layer at the fold portion is 10% to 99%.
In some embodiments, the pattern of the hydrophilic resin layer is a continuous pattern.
In some embodiments, the pattern of the hydrophilic resin layer is a discontinuous pattern, which is solid or hollow, and the discontinuous pattern is a dot, line, stripe, circle, oval, square, polygon, irregular pattern, or a combination thereof.
In some embodiments, the hydrophilic resin layer has a third color, and the first color is different from the third color.
In some embodiments, the hydrophilic resin layer has a third color, and the second color is different from the third color.
Another embodiment of the present disclosure provides a visual color-changing fabric including a base portion and a hydrophilic resin layer disposed on one or both sides of the base portion. The hydrophilic resin layer has a water contact angle of less than 60 degrees. The base part is woven by at least one kind of yarn, wherein when the yarn of the base part is woven by a single kind of yarn, a printed coating is further provided on the surface of the hydrophilic resin layer or the base part, and when the yarn of the base part is two or more kinds, the yarn has two or more colors. The yarn color of the base part, the color of the hydrophilic resin layer and the color of the printing coating can be different, wherein the coverage rate of the hydrophilic resin layer on the base part is 1-99%.
In some embodiments, the hydrophilic resin layer is a continuous pattern.
In some embodiments, the hydrophilic resin layer is a solid or hollow discontinuous pattern, and the discontinuous pattern is a dot, a line, a stripe, a circle, an ellipse, a square, a polygon, an irregular pattern, or a combination thereof.
In some embodiments, the print coating disposed on the surface of the hydrophilic resin layer is partially covered on the upper side or the lower side of the hydrophilic resin layer.
In some embodiments, the color development of the visual color-changing fabric is consistent with the coating of the hydrophilic resin layer on the substrate.
The present disclosure provides a visual color changing woven fabric coated with a hydrophilic resin layer, which can have a wide color development viewing angle at both a vertical viewing angle and a horizontal viewing angle, has a good visual change effect, and can pass the specifications of water washing resistance and chlorine resistance tests.
Drawings
For the purposes of promoting an understanding of the principles of the disclosure, its objects, features, advantages and embodiments, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1, fig. 2A and fig. 2B are partial side views of an embodiment of a visual color changing fabric of the present disclosure in different states, respectively.
Fig. 3 and fig. 4 are partial side views of different embodiments of the visual color-changing fabric according to the present disclosure.
Fig. 5-7 are partial schematic views of another embodiment of the visual color-changing fabric of the present disclosure at different stages of manufacture.
Fig. 8A to 8H are partial top views of different embodiments of the visual color-changing woven fabric of the present disclosure.
Fig. 9A is a top view of an embodiment of the visual color changing textile of the present disclosure prior to absorbing moisture.
Fig. 9B is a top view of an embodiment of the visual color changing fabric of the present disclosure after absorbing moisture.
Fig. 10A is a side view of an embodiment of the visual color-changing textile of the present disclosure prior to absorbing moisture.
Fig. 10B is a side view of an embodiment of the visual color changing textile of the present disclosure after absorbing moisture.
Fig. 10C is a top view of an embodiment of the visual color changing fabric of the present disclosure laid flat on a fabric body.
Fig. 10D is a view of an embodiment of the visual color changing fabric of the present disclosure laid flat on a fabric body, wherein the fabric body is slightly inclined.
Fig. 10E is a side view of an embodiment of the visual color changing fabric of the present disclosure laid flat on a fabric body.
Fig. 11A is a top view of another embodiment of the visual color changing fabric of the present disclosure prior to absorbing moisture.
Fig. 11B, 11C, and 11D are top view diagrams of another embodiment of the visual color changing fabric of the present disclosure after absorbing moisture.
Fig. 12A is a top view of yet another embodiment of the visual color changing scrim of the present disclosure prior to absorbing moisture.
Fig. 12B is a top view of another embodiment of the visual color changing textile of the present disclosure after absorbing moisture.
Reference numerals: 20, grey cloth; 100, visual color changing weaving; 110, a base part; 112, a first yarn; folding part 120; 122, a second yarn; 124, outer page; 126, inner page; 130, a connecting part; 140 hydrophilic resin layer; 200, visual color changing weaving; 210, a base portion; 212, a first yarn; 220, folding the scene part; 222, a second yarn; 224, outer page; 226 inner page; 230 hydrophilic resin layer; 300, visual color changing weaving; 310, folding the scene part; 320, a hydrophilic resin layer; 400, visual color changing weaving; 410, folding the view part; 420, a base part; 500, visual color changing weaving; 510, folding the scene part; 520, a base part; 600, visual color changing weaving; 610, a base part; 620, printing a coating; 630 hydrophilic resin layer.
Detailed Description
The spirit of the present disclosure will be clearly illustrated in the drawings and detailed description, and any person skilled in the art can, after understanding the preferred embodiments of the present disclosure, make changes and modifications to the technology taught by the present disclosure without departing from the spirit and scope of the present disclosure.
The present disclosure provides a fabric with a significant effect of changing visual color and improved breathability for wearing, and more particularly, the present disclosure provides a fabric which can maintain a significant effect of changing visual color through standard detection method of chlorine water fastness (AATCC 162-2002), generally referring to an environment containing less than 100ppm chlorine, and related application fields can be extended to beach, swimming pool, hot spring or paddling, such as swimwear, beach paddling apparel, toys or teaching aids. The visual color changing fabric disclosed in the present disclosure is not limited by the pattern adopted in the fabric design, nor by the raw material type of the fabric yarn or the dyeing and finishing process, and can be flexibly combined according to the functional requirements of the purpose of use.
The present disclosure provides a fabric with visual color change, wherein the weight ratio of the soft and hard chain segments of the hydrophilic resin combined with the fabric must be reasonably matched with the content of isocyanate functional groups to achieve the visual color change effect, and the visual color change effect can be achieved through the water washing resistance and chlorine resistance test functionality, and the visual color change effect can be achieved through non-simple design or simple replacement.
Referring to fig. 1, fig. 2A and fig. 2B, which are partial side views of an embodiment of the visual color changing fabric of the present disclosure in different states, respectively. The visual color-changing fabric 100 includes a base portion 110, a folded portion 120, and a connecting portion 130 for connecting the base portion 110 and the folded portion 120, wherein the base portion 110 is woven by first yarns 112, and the folded portion 120 is woven by second yarns 122. The folded scene portion 120 at least partially covers the base portion 110. The base portion 110 and the viewing portion 120 are releasably engaged by the connecting portion 130, i.e., the viewing portion 120 is selectively substantially flush with the base portion 110 or has an open angle with respect to the base portion 110.
The visual color-changing fabric 100 further includes a hydrophilic resin layer 140 disposed on the tuck portion 120. Since the hydrophilic resin layer 140 changes its molecular structure after absorbing moisture, the folded portion 120 combined with the hydrophilic resin layer 140 is curled, so that the base portion 110 originally covered by the folded portion 120 is exposed, and the yarn coverage area of the fabric is reduced due to the curling of the folded portion 120, thereby increasing the air permeability.
The viewfinder portion 120 has a first color, the base portion 110 has a second color, and the first color is different from the second color. As shown in fig. 1, when the hydrophilic resin layer 140 does not absorb moisture, the folded portion 120 is substantially flush with the base portion 110, and most of the base portion 110 is covered by the folded portion 120, so that the visual color of the woven fabric 100 at this time is changed to the color of the appearance surface of the folded portion 120.
Next, as shown in fig. 2A and 2B, after the hydrophilic resin layer 140 absorbs moisture, the molecular structure thereof changes to change the form, so that the combined folded portion 120 is curled, and then the base portion 110 with different colors can be exposed, thereby changing the visual color of the visual color changing fabric 100.
In some embodiments, as shown in fig. 2A, after the hydrophilic resin layer 140 absorbs moisture, the molecular structure of the hydrophilic resin layer changes to change the shape, which causes the combined folded portions 120 to curl outward. While in other embodiments the joined tuck portions 120 curl inward. The hydrophilic resin layer 140 may be of a type in which the folded portion is outwardly or inwardly curled according to the composition ratio of the components.
Preferably, the water contact angle of the hydrophilic resin layer 140 is not more than 60 degrees. The hydrophilic resin layer 140 includes 11 to 40 weight percent of the polyurethane hard segment and, before being cured, includes not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group. In some embodiments, the weight percent of the polyurethane hard segment in the hydrophilic resin layer 140 may be 11 to 16 weight percent, 16-22 weight percent, 22-28 weight percent, 28-34 weight percent, or 34-40 weight percent. For example, the weight percentage of the polyurethane hard segment in the hydrophilic resin layer 140 may be 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt%, 19wt%, 20wt%, 21wt%, 22wt%, 23wt%, 24wt%, 25wt%, 26wt%, 27wt%, 28wt%, 29wt%, 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt%, 37wt%, 38wt%, 39wt%, or 40wt%. In some embodiments, the weight percent of isocyanate functional groups in the hydrophilic resin layer 140 before the uncured reaction may be 0 to 6 weight percent or 3-6 weight percent. For example, the weight percentage of isocyanate functional groups in the hydrophilic resin layer 140 may be 0wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, or 6wt%. If the urethane hard segment or the isocyanate functional group is higher than this range, the viscosity of the hydrophilic resin layer 140 is too high to be printed on the surface of the viewing portion 120. If the hard polyurethane segment or the isocyanate functional group is lower than this range, the hydrophilic resin layer 140 is not stable enough after being washed with water for many times, and the folded portion 120 is difficult to be curled, resulting in an insignificant change in the color area.
The viewing portion 120 has an outer page 124 and an inner page 126 connected together, wherein the inner page 126 faces the base portion 110 and the outer page 124 is the appearance of the viewing portion 120. In fig. 1 and fig. 2A and 2B, the hydrophilic resin layer 140 is provided on the outer sheet 124 of the fold portion 120. In other embodiments, the hydrophilic resin layer 140 may be disposed on the inner page 126 of the fold portion 120, as shown in fig. 3, or the hydrophilic resin layer 140 may be disposed on the outer page 124 and the inner page 126 of the fold portion 120, as shown in fig. 4.
In some embodiments, the length of the fold portion 120 substantially completely covers the base portion 110, and more particularly, completely covers a portion of the base portion 110 not overlapping with the connecting portion 130, so that when the visual color-changing fabric 100 is not absorbed into moisture and the fold portion 120 is substantially flat against the base portion 110, the clothes pattern seen by the user is represented by the appearance of the fold portion 120. For example, if the length of the folding portion 120 is 4.5mm and the length of the coupling portion 130 is 0.5mm, the length of the portion of the base portion 110 not overlapping the coupling portion 130 is 4.0mm.
In other embodiments, the fold-down portion 120 has a length less than the length of the base portion 110, i.e., a portion of the base portion 110 not coinciding with the connecting portion 130 is partially exposed from the fold-down portion 120. So that when the visual color-changing fabric 100 does not absorb moisture and the background folding portion 120 is substantially flush against the base portion 110, the clothes pattern viewed by the user will be presented by the appearance of the background folding portion 120 and the appearance of the base portion 110. For example, if the length of the folding portion 120 is 4.5mm and the length of the connecting portion 130 is 0.5mm, the length of the portion of the base portion 110 not overlapped with the connecting portion 130 is less than 4.0mm.
In some embodiments, the first yarns 112 of the base portion 110 and the second yarns 122 of the folder portion 120 are yarns having substantially strong properties, and may be made of the same or different materials. Examples of the types of the first yarn 112 and the second yarn 122 may be natural, artificial or a mixture of natural/artificial fibers, and the natural fibers include, but are not limited to, cotton, hemp, wool, silk, etc.; rayon includes, but is not limited to, polyester, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide, polyacrylonitrile, polyurethane, polyvinyl chloride, polyvinyl alcohol, polyolefin, etc., and may be arbitrarily changed depending on the purpose of use, with polyester being preferred.
In some embodiments, the hydrophilic resin layer 140 includes, but is not limited to, polyurethane resin generally having isocyanate groups, polyether urethane, polyester urethane, waterborne urethane, solvent urethane, non-solvent urethane, polyether urethane, polyester-polyether urethane, polycarbonate urethane, and the like.
In some embodiments, the first color of the first yarns 112 of the base portion 110 can be the color of the dyed yarns themselves, or the color of a post-dyed process dye in a subsequent dyeing process or the color transferred by a printing process. The second color of the second yarn 122 of the fold down portion 120 may be the color of the dyed yarn itself, or the color of a post-dyed process dye in a subsequent dyeing process or a color transferred by a printing process, wherein the first color of the base portion 110 is different from the second color of the fold down portion 120.
Note that the hydrophilic resin layer 140 is printed on the surface of the fold-down portion 120 after the fabric (including the base portion 110, the fold-down portion 120, and the connecting portion 130) is dyed. Therefore, the hydrophilic resin layer 140 can be prevented from contacting the liquid during the dyeing and finishing process, so that the visual color changing woven fabric 100 is not unnecessarily deformed during the dyeing and finishing process, and the smoothness of the visual color changing woven fabric 100 can be effectively maintained. In some embodiments, the hydrophilic resin layer 140 may have a third color, and the third color of the hydrophilic resin layer 140 is different from the first color of the base portion 110 and the second color of the viewing portion 120.
In some embodiments, the fabric (including the base portion 110, the tuck portions 120, and the connecting portions 130) may be integrally formed by knitting. In some embodiments, the base portion 110 and the gusset portion 120 can be separately formed and then the base portion 110 and the gusset portion 120 can be joined together by a connecting portion 130, such as a stitching thread, and the base portion 110 and the gusset portion 120 can be woven in a manner not limited to knitting, flat weaving, or other suitable weaving.
Next, please refer to fig. 5 to 7, which are partial schematic views of another embodiment of the visual color changing fabric of the present disclosure at different manufacturing stages. First, as shown in fig. 5, a blank 20 woven from a first yarn 212 and a second yarn 222 is provided, and the first yarn 212 and the second yarn 222 may be arranged in segments. The types of first yarn 212 and second yarn 222 are as described above and will not be repeated here. Next, as shown in fig. 6, a hot pressing process is performed to set the base portion 210 woven by the first yarns 212 and the fold portions 220 woven by the second yarns 222. The base portion 210 and the folded portion 220 are formed by hot pressing the same piece of base fabric 20, and no additional connecting portion or sewing thread is required for connecting the base fabric 210 and the folded portion 220. Then, a series of dyeing and finishing processes are selectively performed to make desired designs and colors on the base portion 210 and the fold portion 220. In some embodiments, the view folding portion 220 can completely cover the base portion 210, or in other embodiments, a portion of the base portion 210 can be partially exposed from the view folding portion 220.
Next, as shown in fig. 7, a hydrophilic resin layer 230 is provided on the fold portion 220. The view folding portion 220 has an outer page 224 and an inner page 226 opposite to each other, wherein the hydrophilic resin layer 230 may be disposed on the outer page 224 of the view folding portion 220, or the inner page 226 of the view folding portion 220, or disposed on the outer page 224 and the inner page 226 of the view folding portion 220. Since the hydrophilic resin layer 230 is printed on the surface of the folder 220 after the blank 20 is dyed. Therefore, the hydrophilic resin layer 230 can be prevented from contacting the liquid during the dyeing and finishing process, so that the visual color-changing woven fabric 200 is not unnecessarily deformed during the dyeing and finishing process, and the smoothness of the color-changing woven fabric 200 can be effectively maintained.
The first yarns 212 of the base portion 210 have a first color and the second yarns 222 of the tuck portion 220 have a second color, the first color being different from the second color. As described above, when the hydrophilic resin layer 230 does not absorb moisture, the folded portion 220 is substantially flush with the base portion 210, and most of the base portion 210 is covered by the folded portion 220, so that the visual color of the woven fabric 200 at this time is changed to the color of the appearance surface of the folded portion 220. After the hydrophilic resin layer 230 absorbs moisture, the form of the hydrophilic resin changes due to the change of the molecular structure of the hydrophilic resin, so that the combined folded portion 220 is curled, and then the base portion 210 with different colors can be exposed, thereby changing the visual color of the visual color changing woven fabric 200.
Preferably, the hydrophilic resin layer 230 includes 11 to 40 weight percent of the polyurethane hard segment, and the hydrophilic resin layer 230 includes not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group before the curing reaction. In some embodiments, the weight percent of the polyurethane hard segment in the hydrophilic resin layer 140 may be 11 to 16 weight percent, 16-22 weight percent, 22-28 weight percent, 28-34 weight percent, or 34-40 weight percent. For example, the weight percentage of the polyurethane hard segment in the hydrophilic resin layer 140 may be 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt%, 19wt%, 20wt%, 21wt%, 22wt%, 23wt%, 24wt%, 25wt%, 26wt%, 27wt%, 28wt%, 29wt%, 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt%, 37wt%, 38wt%, 39wt%, or 40wt%. In some embodiments, the weight percent of isocyanate functional groups in the hydrophilic resin layer 140 before the uncured reaction can be 0 to 6 weight percent or 3-6 weight percent. For example, the weight percentage of isocyanate functional groups in the hydrophilic resin layer 140 may be 0wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, or 6wt%. If the urethane hard segment and the isocyanate reactive functional group are both out of the above range, the viscosity of the hydrophilic resin layer 230 is too high to be printed on the surface of the folded part 220; therefore, if the polyurethane hard segment and the isocyanate functional group cannot simultaneously satisfy the range, the viscosity of the hydrophilic resin layer 230 may be too high to be printed on the surface of the fold portion 220. If the polyurethane hard segment or the isocyanate functional group is less than this range, the hydrophilic resin layer 230 or the resin layer after washing with water for many times may not be stable enough to curl the folded portion 220, resulting in an insignificant change in the color area.
In some embodiments, the hydrophilic resin layer 230 may have a third color, and the third color of the hydrophilic resin layer 230 is different from the first color of the first yarns 212 of the base portion 210 and the second color of the second yarns 222 of the fold portion 220.
Referring to fig. 8A to 8H, which are partial top views of different embodiments of the visual color-changing fabric of the present disclosure. In the visual color-changing woven fabric 300, the coverage of the hydrophilic resin layer 320 disposed on the viewing portion 310 is 10% to 99%.
In some embodiments, the hydrophilic resin layer 320 is printed on the folded portion 310 by gravure printing. For example, the melted hydrophilic resin can flow onto the embossing roll, and then the unnecessary hydrophilic resin is scraped off by the scraper, so that the embossing roll can contact the surface of the dyed and finished fabric, and the hydrophilic resin stored in the grooves of the embossing roll is transferred onto the surface of the fabric and adsorbed in the cavities or the concave parts of the surface of the fabric. Finally, the cloth is dried to allow the crosslinking reaction of the hydrophilic resin to be completed and cured, so that the visual color-changing woven fabric 300 provided with the patterned hydrophilic resin layer 320 can be obtained.
The pattern of the hydrophilic resin layer 320 may be a continuous lattice pattern as shown in fig. 8A or a continuous block pattern as shown in fig. 8B. Alternatively, the pattern of the hydrophilic resin layer 320 may be a discontinuous solid or hollow pattern, and the discontinuous pattern is a dot, line, stripe, square, circle, oval, polygon, irregular pattern, or a combination thereof, as shown in fig. 8C to 8H.
The basic composition of the hydrophilic resin comprises a hard segment structure and a soft segment structure, the composition and content of the hard segment structure affect the hydrogen bonding ability, microphase separation degree and crystallization performance of the whole molecule, and the composition of the soft segment structure affects the flexibility and hydrophilicity of the whole molecule, so the molecular composition, structure, monomer amount and size of the soft and hard segments, and the weight ratio of the soft and hard segments to the whole hydrophilic resin are key factors for determining the physical properties.
The hydrophilic resin layer used in the visual color-changing woven fabric of the present disclosure is a main soft segment structure composition using polyether polyol or polyester polyol or polycarbonate long-segment polyol or polyether polyamine and a main structure composition using isocyanate as a hard segment, and is reacted to generate an isocyanate terminated (-NCO) prepolymer, and then the hydrophilic resin is generated after curing and curing reaction. Alternatively, the polyether or polyester polyol may be a crystalline polyol or an amorphous polyol, and the weight average molecular weight of the polyether or polyester polyol may be 400 to 1000, 800 to 4000, or 2000 to 8000, from the viewpoint of improving hydrophilicity and wash resistance. Preferably, the polyether or polyester polyol has a weight average molecular weight in the range of 400 to 8000. More preferably, the polyether polyol is modified with a polyether polyol having ester groups, a polyether polyol having amide groups, or any combination of the above. The hydrophilic resin layer used in the present woven fabric has a hard segment having a weight average molecular weight of less than 1,000 and a soft segment having a weight average molecular weight of 400 or more, the soft segment and the hard segment being formed by a polymerization reaction with an Isocyanate compound, optionally, an Isocyanate compound such as, but not limited to, methyl Isocyanate (Methyl Isocyanate), toluene Isocyanate (Toluene Diisocyanate), diphenylmethane Diisocyanate (MDI for short), xylylene Diisocyanate (XDI for short), toluene Diisocyanate (Toluene Diisocyanate, TDI (Toluene Diisocyanate), IPDI (Isophorone Diisocyanate), HDI (Hexamethylene Diisocyanate), HMDI (Methyl triphenyl methane triisocyanate), 4 '-dicyclohexylmethane Diisocyanate (4, 4' -Methylene cyclohexyl Isocyanate) (HMDI)), 4 '-dimethyltriphenylmethane-2, 2', 5'-tetraisocyanate (2, 2' -dimethylhexamethylene Diisocyanate-3, 3', 5' -tetraisocyanate), or polymethylene polyphenyl Isocyanate (Poly Methyl phenyl Isocyanate)).
Further, the hard segment composition includes a short segment alcohol, a low molecular weight chain extender or a cross-linking agent, optionally, the short segment alcohol may be used alone or in combination, and the short segment alcohol is selected from, for example, but not limited to, ethylene glycol, 1, 4-butanediol, 1, 6-hexanediol, diethylene glycol, triethylene glycol, propylene glycol, butanediol, diethylene glycol, neopentyl glycol, and glycerol, optionally, the low molecular weight chain extender or the cross-linking agent may be selected from ethylene diamine, triethylamine, n-butylamine, ethanolamine, and Trimethylolpropane (TMP).
The hydrophilic resin generation reaction can be carried out in a melt or a solution, a side reaction caused by overhigh temperature is required to be avoided during the reaction in the melt, the viscosity is gradually increased in the reaction process, incomplete reaction caused by insufficient stirring or overhigh reaction speed is required to be avoided, so that the resin cannot be used. The synthesis reaction of the hydrophilic resin roughly comprises two steps of prepolymerization reaction and chain extension reaction, wherein isocyanate and long-chain segment polyol are subjected to prepolymerization reaction to generate an oligomer containing isocyanate end groups, wherein N = C = O; through the chain extension reaction, the molecular structure is changed from a linear structure to a three-dimensional structure, the hydrophilic degree is different because the reaction conditions are different, the content of isocyanate functional groups is different from the weight ratio of soft and hard segments of the compound, and the hydrophilic resin structure is greatly different, the hydrophilicity is determined by using a water contact angle (theta) test value, the conventional water contact angle measurement method is to coat a hydrophilic resin layer on a flat solid surface (such as glass) for measurement, and when a liquid (such as a water droplet) is observed to be in contact with the flat solid surface, an included angle between the liquid surface and the solid surface (an included angle inside the liquid) is observed, the included angle is called a contact angle, and is a measure of the affinity (wettability) with water, if the contact angle is less than 10 degrees, the surface can be called super-hydrophilic, the surface is strong between 10 and 30 degrees, the surface is generally hydrophilic between 30 and 60 degrees, and the surface is hydrophobic between 90 and 120 degrees.
However, the hydrophilic resin layer used in the visual color-changing woven fabric may undergo a change in form due to volume swelling after wetting, particularly, a change in height of the surface of the resin layer, which may be caused by surface curling or surface squeezing due to stress caused by volume shrinkage, or may be caused by local stacking or local sagging due to single-point expansion of the resin layer plane, and thus the hydrophilic resin layer may not maintain surface flatness continuously, resulting in surface roughness, and thus errors in measurement of water contact angle may occur. However, in summary, when moisture comes into contact with the hydrophilic resin layer, the moisture is rapidly absorbed and dissipated, and completely wets the surface of the hydrophilic resin layer, or the moisture enters the inside of the hydrophilic resin layer (usually within 30 seconds), which causes the change of the resin layer morphology, such that the surface of the resin layer contacted by the observed moisture liquid protrudes or sinks, and therefore the change of the included angle cannot be observed, and the situation is determined that the hydrophilic resin has a water contact angle less than 10 degrees and is super-hydrophilic; if the contact angle of the water drops on the surface of the hydrophilic resin layer changes from large to small, the water contact angle is judged to be 30-60 degrees according to the angle change difference, and when the speed of relatively absorbing the water is high (the angle change from large to small is high, usually within 1 minute), the water contact angle is judged to be 30 degrees and the hydrophilic resin layer has strong hydrophilicity; when the relative absorption rate of the water is slow (the angle change from large to small is slow, usually within 1 to 3 minutes), the liquid water can be observed to be gradually absorbed, and the contact angle of the water is judged to be 60 degrees, and the liquid has general hydrophilicity.
The composition structure and the ratio of the soft and hard segments of the hydrophilic resin layer used in the visual color-changing fabric of the present disclosure can be properly changed according to the visual color-changing requirement of the fabric, but the related change must be matched according to the requirement that the hydrophilic resin layer contains 11 to 40 weight percent of the polyurethane hard segment, and after polymerization reaction and before curing reaction, the hydrophilic resin layer is measured, wherein the hydrophilic resin layer contains not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group, otherwise the prepared fabric is difficult to pass the water washing test and cannot be practically applied. In some embodiments, the weight percent of the polyurethane hard segment in the hydrophilic resin layer 140 may be 11 to 16 weight percent, 16-22 weight percent, 22-28 weight percent, 28-34 weight percent, or 34-40 weight percent. For example, the weight percentage of the polyurethane hard segment in the hydrophilic resin layer 140 may be 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt%, 19wt%, 20wt%, 21wt%, 22wt%, 23wt%, 24wt%, 25wt%, 26wt%, 27wt%, 28wt%, 29wt%, 30wt%, 31wt%, 32wt%, 33wt%, 34wt%, 35wt%, 36wt%, 37wt%, 38wt%, 39wt%, or 40wt%. In some embodiments, the weight percent of isocyanate functional groups in the hydrophilic resin layer 140 before the uncured reaction may be 0 to 6 weight percent or 3 to 6 weight percent. For example, the weight percentage of isocyanate functional groups in the hydrophilic resin layer 140 may be 0wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, or 6wt%.
The preparation of each example and each comparative example will be disclosed below to further describe the features and effects of the present disclosure. It is to be understood that the materials used, the amounts and proportions thereof, the details of the processing, the flow of the processing, and the like, may be suitably varied without departing from the scope of the present disclosure. Therefore, the present disclosure should not be construed restrictively by the way of preparation described below.
Preparation methods of examples 1 to 18 and comparative examples 1 to 7: the soft segment component and the hard segment component used in the experiment were added to a reaction vessel, mixed uniformly, and subjected to a temperature-raising reaction until the content of isocyanate groups reached a composition-set target value, to obtain a hydrophilic layer resin. Specific embodiments are shown in the following table one.
Watch 1
Figure SMS_1
< example 1-resin one >
The resin is solvent-free polyurethane resin, and is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 12.11 weight percent, and before the polymerization reaction is not cured, the hard chain segment of the polyurethane has the content of isocyanate functional groups of 3.63 weight percent, the resin forms a film layer after the reaction is cured, the measured film layer infiltration rate is 250-400%, the water contact angle is less than 10 degrees (water is quickly absorbed and dissipated on the surface of the film), and the resin has super-hydrophilicity.
< example 2-resin two >
The second resin is solvent-free polyurethane resin, and is polymerized in a melt state, after the polymerization reaction is finished, the hard polyurethane chain segment is 11.02 weight percent, before the polymerization reaction is finished, the hard polyurethane chain segment has isocyanate functional group content of 2.72 weight percent, the second resin forms a film layer after the reaction and curing, the measured film layer infiltration rate is 250-400%, the water contact angle is less than 10 degrees (water is quickly absorbed and dissipated on the surface of the film), and the second resin has super-hydrophilicity.
< example 3-resin III >
And the third resin is solvent-free polyurethane resin, is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 15.24 weight percent, and before the polymerization reaction is not cured, the hard chain segment of the polyurethane has the content of isocyanate functional groups of 3.81 weight percent, the third resin forms a film layer after the reaction and curing, the measured film layer infiltration rate is 250-400%, the water contact angle is less than 10 degrees (water is quickly absorbed and dissipated on the surface of the film), and the third resin has super-hydrophilicity.
< example 4-resin IV >
And the resin IV is solvent-free polyurethane resin, is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 12.21 weight percent, and before the polymerization reaction is not cured, the hard chain segment of the polyurethane has the content of isocyanate functional groups of 4.21 weight percent, the resin IV forms a film layer after the reaction and curing, the measured film layer infiltration rate is 250-400 percent, the water contact angle is less than 10 degrees (water is quickly absorbed and dissipated on the surface of the film), and the resin IV has super-hydrophilicity.
< example 5-resin five >
The fifth resin is solvent-free polyurethane resin, and is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 19.95 weight percent, and before the polymerization reaction is not cured, the fifth resin has the content of isocyanate functional groups of 3.03 weight percent, the fifth resin forms a film layer after the reaction and curing, the measured film layer infiltration rate is 250-400%, the water contact angle is less than 10 degrees (water is quickly absorbed and dissipated on the surface of the film), and the fifth resin has super-hydrophilicity.
< example 6-resin six >
And the resin six is solvent-free polyurethane resin, and is subjected to reaction polymerization in a melt state, after the polymerization reaction is finished, the hard polyurethane segment is 11.94 weight percent, and before the polymerization reaction is not cured, the hard polyurethane segment has the isocyanate functional group content of 5.09 weight percent, the resin six forms a film layer after the reaction is cured, the measured film layer infiltration rate is 250-400%, the water contact angle is less than 10 degrees (water is quickly absorbed and dissipated on the surface of the film), and the film layer has super-hydrophilicity.
< example 7-resin seven >
The seventh resin is solvent-free polyurethane resin, and is polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 21.95 weight percent, and before the polymerization reaction is not cured, the hard chain segment of the polyurethane has the content of isocyanate functional groups of 5.51 weight percent, the seventh resin forms a film layer after the reaction and curing, the measured film layer infiltration rate is 150-250%, the water contact angle is less than 30 degrees (the change of the contact angle of a water droplet is rapidly changed from big to small), and the seventh resin has strong hydrophilicity.
< example 8-resin eight >
The resin eight is solvent-free polyurethane resin, and is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 20.40 weight percent, and before the polymerization reaction is not cured, the hard chain segment has the content of isocyanate functional groups of 3.18 weight percent, the resin eight forms a film layer after the reaction and curing, the measured film layer infiltration rate is 150-250%, the water contact angle is less than 30 degrees (the change of the contact angle of a water droplet is rapidly changed from big to small), and the resin eight has strong hydrophilicity.
< example 9-resin nine >
The resin nine is solvent-free polyurethane resin, and is subjected to reaction polymerization in a melt state, after the polymerization reaction is completed, the hard polyurethane chain segment is 20.40 weight percent, before the polymerization reaction is not performed, the content of isocyanate functional groups is 3.26 weight percent, the resin nine forms a film layer after the reaction curing, the measured film layer infiltration rate is 150-250%, the water contact angle is less than 30 degrees (the change of the contact angle of a water droplet is rapidly changed from large to small), and the resin nine has strong hydrophilicity.
< example 10 resin ten >
The resin ten is solvent-free polyurethane resin, and is polymerized in a melt state, after the polymerization reaction is finished, the hard polyurethane chain segment is 20.50 weight percent, before the polymerization reaction is not performed, the content of isocyanate functional groups is 3.52 weight percent, the resin ten forms a film layer after the reaction curing, the measured film layer infiltration rate is 150-250%, the water contact angle is less than 30 degrees (the change of the contact angle of a water droplet is rapidly changed from big to small), and the resin ten has strong hydrophilicity.
< example 11-resin eleven >
The resin eleven is solvent-free polyurethane resin, and is subjected to reaction polymerization in a melt state, after the polymerization reaction is completed, a polyurethane hard chain segment is 18.30 weight percent, before the polymerization reaction is not performed, the content of isocyanate functional groups is 3.04 weight percent, the resin eleven forms a film layer after the reaction curing, the measured film layer infiltration rate is 150-250%, the water contact angle is less than 30 degrees (the change of the contact angle of a water droplet is rapidly changed from big to small), and the film layer has strong hydrophilicity.
< example 12-resin twelve >
The resin thirteen is solvent-free polyurethane resin, which reacts and polymerizes in a melt state, after the polymerization reaction is completed, the hard polyurethane chain segment is 18.78 weight percent, and before the polymerization reaction is not solidified, the hard polyurethane chain segment has 4.50 weight percent of isocyanate functional group content, the resin twelve forms a film layer after the reaction and solidification, the measured film layer infiltration rate is 150-250%, the water contact angle is less than 30 degrees (the change of the contact angle of a water droplet is rapidly changed from big to small), and the resin has strong hydrophilicity.
< example 13-resin thirteen >
Thirteen resin is solvent-free polyurethane resin, and is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 21.91 weight percent, and before the polymerization reaction is not cured, the hard chain segment has the isocyanate functional group content of 5.40 weight percent, the thirteen resin forms a film layer after the reaction and curing, the measured film layer infiltration rate is 50-150%, the water contact angle is less than 60 degrees (the contact angle change of a water droplet is gradually reduced), and the thirteen resin has general hydrophilicity.
< example 14-resin fourteen >
Fourteen resins are solvent-free polyurethane resins, and react and polymerize in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 24.91 weight percent, before the polymerization reaction is not cured, the hard chain segment has the content of isocyanate functional groups of 2.74 weight percent, fourteen resins form a film layer after the reaction and curing, the measured film layer infiltration rate is 50-150%, the water contact angle is less than 60 degrees (the contact angle of a water droplet is gradually changed from big to small), and the polyurethane resin has general hydrophilicity.
< example 15-resin fifteen >
Fifteen resin is solvent-free polyurethane resin, and is reacted and polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 24.97 weight percent, and before the polymerization reaction is not carried out, the hard chain segment has the isocyanate functional group content of 5.85 weight percent, fifteen resin forms a film layer after the reaction curing, the measured film layer infiltration rate is 50-150%, the water contact angle is less than 60 degrees (the contact angle change of the water droplet is gradually reduced from big to small), and the film layer has general hydrophilicity.
< example 16-sixteen resins >
Sixteen resin is solvent-free polyurethane resin, and reacts and polymerizes in a melt state, after the polymerization reaction is completed, the hard chain segment of the polyurethane is 32.80 weight percent, and before the polymerization reaction is not solidified, the resin has isocyanate functional group content of 5.98 weight percent, the resin sixteen resin forms a film layer after the reaction and solidification, the measured film layer infiltration rate is 50-150%, the water contact angle is less than 60 degrees (the contact angle change of the water droplet is gradually reduced), and the resin has general hydrophilicity.
< example 17-seventeen resin >
Seventeenth resin is solvent-free polyurethane, and is subjected to reaction polymerization in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 39.59 weight percent, all isocyanate functional groups are reacted and cannot be detected (equivalent to 0 weight percent), the seventeenth resin is dried and cured to form a film layer, the measured film layer infiltration rate is 50-150%, the water contact angle is less than 60 degrees (the contact angle of a water droplet is gradually reduced), and the seventeenth resin has general hydrophilicity.
< example 18-resin eighteen >
Eighteen resin is solvent-free polyurethane, and is subjected to reaction polymerization in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 11.18 weight percent, the isocyanate functional groups are completely reacted and cannot be detected (equivalent to 0 weight percent), the eighteen resin is dried and solidified to form a film layer, the measured film layer infiltration rate is 50-150%, the water contact angle is less than 60 degrees (the contact angle change of a water droplet is gradually reduced), and the eighteen resin has general hydrophilicity.
< comparative example 1-resin nineteen >
Nineteen resin is solvent-free polyurethane resin, and is polymerized in a melt state, after the polymerization reaction is completed, the hard polyurethane chain segment is 50.44 weight percent, before the polymerization reaction is not performed, the content of isocyanate functional groups is 7.63 weight percent, the nineteen resin forms a film layer after the reaction and curing, the measured film layer infiltration rate is less than 50 percent, the water contact angle is more than 60 degrees (the contact angle of a water droplet is kept unchanged, the obvious result shows that the nineteen resin does not have hydrophilicity), the proportion of the hard polyurethane chain segment of the nineteen resin formula is higher, and the content of the isocyanate functional groups is higher, so that the surface layer is too rigid after curing, the hydrophilicity is poor, and the color development effect is poor.
< comparative example 2 resin No. >
The resin twenty is solvent-free polyurethane, and is subjected to reaction polymerization in a melt state, after the polymerization reaction is completed, the hard chain segment of the polyurethane is 8.16 weight percent, before the polymerization reaction is not cured, the content of the isocyanate functional group is 2.57 weight percent, the resin twenty forms a film layer after the reaction is cured, the measured film layer infiltration rate is less than 50 percent, and the water contact angle is more than 60 degrees (the contact angle of a water droplet is kept unchanged, and the resin twenty is obviously not hydrophilic). The proportion of the hard polyurethane chain segment in the resin twenty formula is low, so that the surface layer cannot be well cured, the hydrophilicity is poor, and the color development effect is poor.
< comparative example 3 resin twenty one >
The resin twenty-one is solvent type polyurethane, and is subjected to reaction polymerization in a solvent state, after the polymerization reaction is completed, the hard chain segment is 42.75 weight percent, all isocyanate functional groups of the resin twenty-one are reacted (equivalent to 0 weight percent), the reaction cannot be detected, the resin twenty-one forms a film layer after drying and curing, the measured film layer infiltration rate is less than 50 percent, and the water contact angle is more than 60 degrees (the contact angle of a water droplet is kept unchanged, and the resin twenty-one is obviously not hydrophilic). The proportion of the hard polyurethane chain segment of the twenty-one formula of the resin is higher, so that the surface layer is too rigid after being cured, the hydrophilicity is poor, and the color developing effect is poor.
< comparative example 4-resin twenty-two >
The resin twenty-two is solvent type polyurethane, and is reacted and polymerized in a solvent state, after the polymerization reaction is completed, the hard chain segment is 8.14 weight percent, the isocyanate functional groups of the resin twenty-two are reacted completely and cannot be detected (equivalent to 0 weight percent), the resin twenty-two forms a film layer after being dried and cured, the measured film layer infiltration rate is less than 50 percent, and the water contact angle is more than 60 degrees (the contact angle of a water droplet is kept unchanged, and the obvious condition that the resin twenty-two does not have hydrophilicity) is shown. The proportion of the hard polyurethane chain segment of the resin twenty-two formula is low, so that the surface layer cannot be well cured, the hydrophilicity is poor, and the color development effect is poor.
< comparative example 5-resin twenty-three >
The resin twenty three is water-based polyurethane, the water-based polyurethane is dispersed in an aqueous solution after reaction and polymerization, after the polymerization reaction is completed, the hard chain segment is 30.36 weight percent, the isocyanate functional group of the resin twenty three is reacted and cannot be detected (equivalent to 0 weight percent), the resin twenty three forms a film layer after drying and curing, the measured film layer infiltration rate is less than 50 percent, and the water contact angle is more than 60 degrees (the contact angle of a water droplet is kept unchanged, and the twenty three resin is obviously not hydrophilic). The twenty-three formula of the resin has poor hydrophilicity and poor color development effect.
< comparative example 6-twenty four resins >
Twenty-four resin is solvent-free polyurethane, and is reacted and polymerized in a melt state, after the polymerization reaction is completed, the hard chain segment of the polyurethane is 4.45 weight percent, before the uncured reaction, the content of isocyanate functional groups is 1.22 weight percent, the measured film infiltration rate of the twenty-four resin is 150-250%, the water contact angle is less than 30 degrees, but the film layer can not be well cured and formed after the reaction is mature, presumably because the proportion of the hard chain segment of the polyurethane in the formula of the twenty-four resin is low, the surface layer can not be well cured, the water contact angle is less than 30 degrees, the resin has hydrophilicity, and the resin has a color developing effect before water washing, but the resin has poor film forming property, and the color developing effect after water washing is poor.
< comparative example 7-resin twenty-five >
Twenty five resin is polyurethane without solvent, and the reaction is polymerized in a melt state, after the polymerization reaction is finished, the hard chain segment of the polyurethane is 8.05 weight percent, before the reaction is not cured, the content of isocyanate functional group is 1.13 weight percent, the wetting rate of the film layer measured by twenty four resin is 150-250 percent, the water contact angle is less than 30 degrees, and the film layer can not be well cured to form after the reaction is cured. The reason is presumed that the surface layer cannot be cured well due to the low proportion of the hard polyurethane segment in the twenty-five resin formula, the water contact angle is less than 30 degrees, the resin has hydrophilicity and a color development effect before washing, but the color development effect after washing is poor due to the poor film-forming property of the resin.
The detection method and the specification of the related physical properties are as follows:
< method for measuring isocyanate functional group (-NCO) >
Dissolving di-n-butylamine in isopropanol, reacting with isocyanate functional groups of a resin sample, titrating excessive di-n-butylamine by using a hydrochloric acid standard solution, and calculating to obtain the content of the isocyanate functional groups in the resin sample.
< measurement of film layer infiltration >
Referring to ISO 175 standard, a sample with the area of 60mm and the thickness of about 0.05-0.1 mm is taken, placed in water at the temperature of 23 +/-DEG, soaked for about 2 hours, the sample is taken out, the surface moisture of the sample is wiped clean, the moisture infiltration rate of the sample is calculated by measuring the weight of the sample before and after soaking and calculating the weight difference, wherein the sample can be tested only by forming a film layer after the sample is cured and solidified through reaction.
< measurement of Water contact Angle >
A water contact angle measuring instrument (brand name: kruss; model number: FM 40), which coats a resin on a cloth substrate, then performs a drying process to form a film layer on the cloth substrate, and then drops water on the surface of the film layer and measures the water contact angle by using the water contact angle measuring instrument to obtain the water contact angle.
< method for testing horizontal coloring visibility Angle >
The detection method is that the cloth is vertically placed at a distance of 1m in front of an observer, the cloth and human eyes are at the same horizontal plane, the cloth is fixed, the front visual angle of the observer moves horizontally, and the angle of the cloth with changed color development can be observed to the maximum extent, namely the horizontal color development visual angle range.
< method for measuring vertical color-developing viewing angle >
The detection mode is that the cloth is vertically placed at a distance of 1m in front of an observer, the cloth is fixed, the front visual angle of the observer vertically moves, and the angle of the cloth changing and developing color can be observed to the maximum extent, namely the range of the vertical color developing visual angle.
< Water washing resistance test >
Washing/drying repeated tests are carried out by adopting a washing machine meeting AATCC-LP1 standard and referring to an AATCC-135 mode.
< chlorine resistance test >
The mixture was statically immersed in an aqueous sodium hypochlorite (NaClO) solution having a chlorine concentration of 100ppm at 25 ℃ and a pH of 6 to 7 for 168 hours.
< definition and test method of color development area >
The color-developing area ratio is defined as the ratio of the color change area before and after the moisture infiltration (moisture absorption) of the cloth, and the calculation mode is as follows: (area of lower base portion before being wetted-area of lower base portion exposed after being wetted)/(area of lower base portion before being wetted-area of lower base portion exposed after being wetted-x 100%).
< first Experimental example >
In the first experimental example, the first to twenty-five resins of examples 1 to 18 and comparative examples 1 to 7 were printed on the outer page of the fold-down portion in a continuous hexagonal pattern, and the color development visibility angle thereof is as shown in table two. The formulations of examples 6 to 12 and 17 and the formulations of comparative examples 6 and 7 were selected and subjected to water washing test and chlorine resistance test verification (static immersion in an aqueous solution of sodium hypochlorite, chlorine concentration 100 ppm) to measure the color areas, and the results are shown in table three. As can be seen from table two, when the water contact angle of the hydrophilic resin layer is not less than 60 degrees, as shown in comparative examples 1 to 5, good color-developing viewing angles (including horizontal and vertical viewing angles) are not achieved. As can be seen from table three, when the hydrophilic resin layer cannot simultaneously satisfy the composition conditions of the resin containing 11 to 40 weight percent of the polyurethane hard segment and the resin having not more than 6 weight percent (containing 0 to 6 weight percent) of the isocyanate functional group before the curing reaction, as shown in comparative examples 6 to 7, the resin cannot be smoothly formed into a film, does not have good film-forming properties, and the prepared fabric is difficult to pass the water washing test. Therefore, as comprehensively judged from the experimental results of tables two to three, when the water contact angle of the hydrophilic resin layer cannot be less than 60 degrees and simultaneously meets the resin composition condition including 11 to 40 weight percent of the polyurethane hard segment and not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group before the curing reaction, the prepared fabric cannot have a good color development effect and cannot be practically used through the water washing test.
TABLE II- -color development effect verification
Figure SMS_2
Figure SMS_3
TABLE III-color development area verification by Water washing experiment and chlorine resistance experiment
Figure SMS_4
Figure SMS_5
< second Experimental example >
In the second experimental example, the first to twenty-five resins of examples 1 to 18 and comparative examples 1 to 7 were printed on the outer page of the fold portion in a pattern of discontinuous dots, and the color-developing viewing angle thereof is as shown in table four, and when the hydrophilic layer resin fails to meet the condition of water contact angle less than 60 degrees, it fails to exhibit good color-developing viewing angle (including horizontal and vertical viewing angles). When the results before and after the water washing test and the chlorine resistance test verification (static immersion in an aqueous sodium hypochlorite solution, chlorine concentration 100 ppm) were carried out using the results of examples 6 to 12, 17, 6 and 7 and the color development area thereof was measured, as shown in table five, when the hydrophilic resin layer failed to satisfy both the resin composition condition including 11 to 40 weight percent of the polyurethane hard segment resin and the resin composition condition having not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group before the uncured reaction, as shown in comparative examples 6 to 7, the resin failed to form a film smoothly, did not have a good film-forming property, and failed to pass the water washing test. Therefore, it can be seen from the experimental results in tables four to five that when the water contact angle of the hydrophilic resin layer cannot be less than 60 degrees and cannot simultaneously satisfy the resin composition condition including 11 to 40 weight percent of the polyurethane hard segment and not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group before the curing reaction, the prepared fabric cannot exhibit a good color development effect and is difficult to pass the water washing test and cannot be practically used.
TABLE IV- -verification of color development Effect
Figure SMS_6
Figure SMS_7
TABLE V-color development area verification by Water washing experiment and chlorine resistance experiment
Figure SMS_8
Figure SMS_9
< third Experimental example >
In the third experimental example, the first to twenty-five resins of the foregoing examples 1 to 18 and comparative examples 1 to 7 were printed on one side of the base portion of the woven fabric in a discontinuous linear pattern, wherein the hydrophilic layer was printed in an area of about 40% of the total area of the base layer of the woven fabric, and the color-developing viewing angle thereof is as shown in table six, and when the hydrophilic layer resin failed to satisfy the condition of water contact angle less than 60 degrees, it failed to exhibit good color-developing viewing angle (including horizontal and vertical viewing angles). The results of the water washing test and the chlorine resistance test (static immersion in an aqueous solution of sodium hypochlorite, chlorine concentration 100 ppm) were carried out using the results of examples 7 to 12, comparative example 6 and comparative example 7, and the color areas were measured, and the results are shown in Table seven. As can be seen from tables six to seven, when the water contact angle of the hydrophilic resin layer cannot be less than 60 degrees and simultaneously satisfies the resin composition conditions including 11 to 40 weight percent of the polyurethane hard segment and not more than 6 weight percent (including 0 to 6 weight percent) of the isocyanate functional group before the curing reaction, as shown in comparative examples 6 to 7, the prepared fabrics are difficult to pass the water washing test and cannot be put into practical use.
TABLE VI- -color effect verification
Figure SMS_10
Figure SMS_11
TABLE seven-verification of color development area by washing experiment and chlorine resistance experiment
Figure SMS_12
Figure SMS_13
Finally, please refer to fig. 9A, fig. 9B, fig. 10A, fig. 10B, fig. 10C, fig. 10D, and fig. 10E, wherein fig. 9A is a top view before moisture absorption of an embodiment of the visual color change woven fabric of the present disclosure, fig. 9B is a side view after moisture absorption of an embodiment of the visual color change woven fabric of the present disclosure, and fig. 10A is a side view before moisture absorption of an embodiment of the visual color change woven fabric of the present disclosure. Fig. 10B is a side view of an embodiment of the visual color changing textile of the present disclosure after absorbing moisture. Fig. 10C is a top view of an embodiment of the visual color changing fabric of the present disclosure laid flat on a fabric body. Fig. 10D is a view of an embodiment of the visual color changing fabric of the present disclosure laid flat on a fabric body, wherein the fabric body is slightly inclined. Fig. 10E is a side view of an embodiment of the visual color-changing woven fabric of the present disclosure laid flat on a fabric body.
In the present embodiment, the view-folding portion 410 and the base portion 420 of the visual color changing fabric 400 are woven by yarns with different colors, specifically, the view-folding portion 410 of the surface layer is woven by purple yarns, the base portion 420 of the bottom layer is woven by blue yarns, and the hydrophilic resin layer printed on the surface of the view-folding portion 410 may be transparent or the same color as or different color from the view-folding portion 410, and the transparent hydrophilic resin layer is taken as an example in the present embodiment for explanation.
As can be seen from fig. 9A and 10A, after the visible color-changing fabric 400 absorbs moisture, the purple folded portion 410 curls to expose the blue bottom portion 420. As can be confirmed from fig. 9B and 10B, the folded portion 410 is substantially flush with the base portion 420 before the visual color-changing fabric 400 absorbs moisture, and the folded portion 410 is curled to expose the base portion 420 after the visual color-changing fabric 400 absorbs moisture.
As can be seen from fig. 10C, 10D and 10E, after the visual color-changing fabric 400 absorbs moisture, the appearance of the visible effect of the visual color-changing fabric 400 can be clearly observed from a flat top view, a slightly inclined top view or a flat side view.
Referring next to fig. 11A to 11D, fig. 11A is a top view of another embodiment of the visual color change woven fabric of the present disclosure before absorbing moisture, and fig. 11B, 11C, and 11D are top view of another embodiment of the visual color change woven fabric of the present disclosure after absorbing moisture, wherein the visual color change woven fabric is laid flat.
In other embodiments, the hydrophilic resin can also be applied to a visual color-changing woven fabric with only a base portion, as shown in fig. 12A and 12B, wherein fig. 12A is a top view of another embodiment of the visual color-changing woven fabric of the present disclosure before absorbing moisture, and fig. 12B is a top view of another embodiment of the visual color-changing woven fabric of the present disclosure after absorbing moisture, wherein the visual color-changing woven fabric is laid flat.
Similarly, the hydrophilic resin layer 630 should include 11 to 40 weight percent of polyurethane hard segments, and the hydrophilic resin in the hydrophilic resin layer 630 has not more than 6 weight percent (including 0 to 6 weight percent) of isocyanate functional groups before the curing reaction, and the water contact angle of the hydrophilic resin layer 630 is less than 60 degrees, so as to achieve the visual change effect that can be achieved by the water washing resistance and chlorine resistance test specification, which is desired by the present disclosure.
In summary, the present disclosure provides a visual color changing woven fabric coated with a hydrophilic resin layer, which has a good visual changing effect at a vertical color development viewing angle or a horizontal color development viewing angle, and can pass the specifications of the water washing resistance and the chlorine resistance test. Compared with the prior art, such as the US16/275,593 application and the TW202002829A application, the present disclosure provides distinct operation mechanisms and can solve the disadvantages of the prior art, such as the limited flap tilting degree, the insignificant visual change effect and the limited viewing angle of color development. The visual color change fabric disclosed by the disclosure can pass through the washing resistance and chlorine resistance test specifications, and is suitable for being applied to different textile fields.
While the present disclosure has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure, and therefore the scope of the present disclosure should be determined by that of the appended claims.

Claims (19)

1. A visual color changing fabric, comprising:
a base portion woven from first yarns;
the folding part is woven by second yarns, the base part and the folding part are connected in a lifting and closing manner through a connecting part, and at least part of the folding part covers the base part; and
a hydrophilic resin layer disposed on the viewing area, wherein a water contact angle of the hydrophilic resin layer is not more than 60 degrees,
wherein the base portion is the base portion having a first color, the fold-down portion is the fold-down portion having a second color, and the first color is different from the second color.
2. A visual color changing fabric, comprising:
a base portion woven from a first yarn;
the folding part is woven by second yarns, the folding part and the base part are formed by hot pressing of the same grey cloth, and the folding part and the base part can be in a lifting and closing type and can be jointed without a connecting part; and
a hydrophilic resin layer disposed on the fold portion, wherein a water contact angle of the hydrophilic resin layer is not more than 60 degrees,
wherein the first yarns are the first yarns having a first color and the second yarns are the second yarns having a second color, and the first color is different from the second color.
3. The visual color-changing textile of claim 1 or 2, wherein the tuck section comprises an outer panel and an inner panel joined thereto, the inner panel facing the base section, the hydrophilic resin layer being coated on the outer panel.
4. The visual color-changing textile of claim 1 or 2, wherein the tuck portion comprises an outer page and an inner page connected, the inner page facing the base portion, the hydrophilic resin layer being coated on the inner page.
5. The visual color-changing textile of claim 1 or 2, wherein the tuck section comprises an outer page and an inner page connected, the inner page facing the base section, the hydrophilic resin layer being coated on the inner page and the outer page.
6. The visual color-changing textile of claim 1 or 2, wherein the tucked portion completely covers the base portion.
7. The visual color-changing textile of claim 1 or 2, wherein the base portion is partially exposed from the tuck portion.
8. The visual color-changing textile of claim 1 or 2, wherein the horizontal development viewing angle of the visual color-changing textile is up to 170 degrees.
9. The visual color-changing textile of claim 1 or 2, wherein the visual color-changing textile has a vertically-developed viewing angle of up to 120 degrees.
10. The visual color-changing textile according to claim 1 or 2, wherein the coverage of the hydrophilic resin layer at the fold portion is 10 to 99%.
11. The visual color-changing textile as claimed in claim 1 or 2, wherein the pattern of the hydrophilic resin layer is a continuous pattern.
12. The visual color-changing textile according to claim 1 or 2, wherein the pattern of the hydrophilic resin layer is a discontinuous pattern of solid or hollow, and the discontinuous pattern is in the form of dots, lines, stripes, squares, circles, ellipses, polygons, or a combination thereof.
13. The visual color-changing textile according to claim 1 or 2, wherein the hydrophilic resin layer is the hydrophilic resin layer having a third color, the first color being different from the third color.
14. The visual color-changing textile as claimed in claim 1 or 2, wherein the hydrophilic resin layer is the hydrophilic resin layer having a third color, the second color being different from the third color.
15. A visual color changing fabric, comprising:
a base portion woven from at least one yarn; and
a hydrophilic resin layer disposed on one side or both sides of the base portion, wherein a water contact angle of the hydrophilic resin layer is less than 60 degrees,
wherein, when the yarns of the base part are woven by a single kind of yarns, the hydrophilic resin layer or the surface of the base part is further provided with a printing coating,
wherein, when the yarns of the base part are more than two, the yarns have more than two colors,
the yarn color of the base part, the color of the hydrophilic resin layer and the color of the printing coating can be different, wherein the coverage rate of the hydrophilic resin layer on the base part is 1-99%.
16. The visual color-changing textile of claim 15, wherein the hydrophilic resin layer is a continuous pattern.
17. The visual color-changing textile of claim 15, wherein the hydrophilic resin layer is a discontinuous pattern of solid or hollow, and the discontinuous pattern is dot-shaped, line-shaped, stripe-shaped, square-shaped, circular-shaped, oval-shaped, polygonal-shaped, or a combination thereof.
18. The visual color-changing textile of claim 15, wherein the print coating disposed on the surface of the hydrophilic resin layer is partially covered on the upper or lower side of the hydrophilic resin layer.
19. The visual color-changing textile according to claim 15, wherein the color development form of the visual color-changing textile is in accordance with the coating form of the hydrophilic resin layer on the base portion.
CN202222515326.0U 2022-09-22 2022-09-22 Visual color changing woven cloth Active CN218779104U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222515326.0U CN218779104U (en) 2022-09-22 2022-09-22 Visual color changing woven cloth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222515326.0U CN218779104U (en) 2022-09-22 2022-09-22 Visual color changing woven cloth

Publications (1)

Publication Number Publication Date
CN218779104U true CN218779104U (en) 2023-03-31

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Family Applications (1)

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Country Status (1)

Country Link
CN (1) CN218779104U (en)

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