Slow-release dyeing material and application thereof

Abstract

The invention provides a slow-release dyeing material and application thereof. The slow-release dyeing material comprises a water-soluble phase and a non-water-soluble phase which are blended, the water-soluble phase comprises a water-soluble polymer material and a dyeing component, and the dyeing component comprises a dyeing agent; and the non-water-soluble phase comprises a non-water-soluble material. The water-soluble phase in the slow-release dyeing material can be slowly dissolved in water to release dyeing components, so that the slow-release effect of the dyeing components is realized; the slow-release dyeing material can be used in a washing device, clothes can be dyed in a stable state simply and conveniently, the slow-release dyeing material can be used for many times, and dyeing components do not need to be added every time.

Description

Technical Field

[0001] The invention belongs to the technical field of dyeing, and in particular relates to a slow-release dyeing material and application thereof. Background Art

[0002] At present, clothing is one of the important ways for modern people to pursue individuality and show themselves in the trend. The diversification and personalization of colors are also one of the development trends of the clothing industry. However, during the washing and long-term wearing process, clothes will gradually fade, resulting in uneven colors and poor appearance.

[0003] To address this issue, clothing manufacturers can improve the printing and dyeing process of garments to enhance the color fastness and oxidation resistance of dyes. In addition, there is a new way to improve this problem during subsequent use, such as purchasing dyes and fixing agents to dye faded clothes. However, dyeing with self-purchased dyes is a complicated process, requiring the use of warm or hot water at a certain temperature, and multiple turnings, followed by the addition of fixing agents for continued turning, during which there are many uncontrollable factors.

[0004] Based on this problem, a simpler and more convenient dyeing scheme needs to be studied. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a slow-release dyeing material and its application. The water-soluble phase in the slow-release dyeing material can be slowly dissolved in water to release the dyeing component, thereby achieving a slow-release effect of the dyeing component; the slow-release dyeing material can be used in a washing device to simply and conveniently achieve dyeing of clothes in a stable state, and the slow-release dyeing material can be used multiple times without adding the dyeing component each time.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a slow-release dyeing material, the slow-release dyeing material comprising a blended water-soluble phase and a non-water-soluble phase;

[0008] The water-soluble phase includes a water-soluble polymer material and a dyeing component, and the dyeing component includes a dye;

[0009] The water-insoluble phase includes water-insoluble materials.

[0010] In some embodiments of the present invention, the water-soluble phase and the non-aqueous-soluble phase are both continuous phases.

[0011] In some embodiments of the present invention, the short side size of the phase region of the water-soluble phase is 100 nm to 10 μm; the short side size of the phase region of the non-water-soluble phase is 100 nm to 10 μm.

[0012] In some embodiments of the present invention, the dissolution rate of the sustained-release dyeing material in water is 0.0001 g / L to 0.003 g / L.

[0013] The dissolution rate test method is as follows: the solid aromatherapy material is prepared into a sample of 10 mm×10 mm×4 mm, with a mass of m1, and is rinsed with tap water at a flow rate of 2.5 L / min at room temperature. After the sample mass is constant, it is taken out and dried, and weighed, with a mass of m2. The volume of the water used for rinsing is v, and the dissolution rate = (m1-m2) / v;

[0014] The criterion for determining constant sample mass is: the mass difference before and after rinsing for 1 hour is less than 0.01 g;

[0015] All samples must be dried in a 60°C forced air drying oven before weighing, and the drying standard is that the mass difference before and after drying for 1 hour is less than 0.01g.

[0016] In some embodiments of the present invention, the mass ratio of the water-soluble phase to the non-aqueous phase is (30-70):(30-70), preferably (40-60):(40-60).

[0017] In some embodiments of the present invention, the mass ratio of the water-soluble polymer material to the dyeing component is (65-75):(25-35).

[0018] In some embodiments of the present invention, the dyeing agent is selected from one or more of direct dyes and reactive dyes.

[0019] In some embodiments of the present invention, the dyeing component further comprises a fixing agent.

[0020] In some embodiments of the present invention, the water-soluble polymer material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone.

[0021] In some embodiments of the present invention, the molecular weight of the water-soluble polymer material is 1 to 1 million.

[0022] In some embodiments of the present invention, the molecular weight of the polyvinyl alcohol is 800-5000.

[0023] In some embodiments of the present invention, the molecular weight of the polyethylene glycol is 100-4000.

[0024] In some embodiments of the present invention, the molecular weight of the polyethylene oxide is 50,000 to 1,000,000.

[0025] In some embodiments of the present invention, the water-insoluble material is a water-insoluble polymer material.

[0026] In some embodiments of the present invention, the water-insoluble polymer material is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers.

[0027] In some embodiments of the present invention, the molecular weight of the water-insoluble polymer material is 30,000 to 300,000.

[0028] In some embodiments of the present invention, the water-soluble polymer material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000, the water-insoluble material is low-density polyethylene with a molecular weight of 30,000 to 100,000, and the mass ratio of the water-soluble phase to the water-insoluble phase is 55:45.

[0029] In some embodiments of the present invention, the water-soluble polymer material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000, the water-insoluble material is homopolypropylene with a molecular weight of 80,000 to 150,000, and the mass ratio of the water-soluble phase to the water-insoluble phase is 60:40.

[0030] In a second aspect, the present invention provides a use of the slow-release dyeing material as described in the first aspect in a washing device.

[0031] In a third aspect, the present invention provides a washing device, comprising a dyeing module, wherein the dyeing module contains the slow-release dyeing material described in the first aspect.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The slow-release dyeing material provided by the present invention comprises a blended water-soluble phase and a non-water-soluble phase, wherein the water-soluble phase can be continuously and slowly dissolved in an aqueous environment to release a dyeing component to achieve a slow-release effect. The phase region structure and slow-release rate of the slow-release dyeing material are controllable and can be adjusted by adjusting the type, molecular weight and ratio of the material. The slow-release dyeing material can be used in a washing device, and the dyeing component can be slowly released when water is injected. The uniform tumbling and heating functions of the washing device can be used to simply and conveniently realize the dyeing of clothes in a stable state, and the slow-release dyeing material can be used multiple times without adding a dyeing component each time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a slow-release dyeing material provided by an embodiment of the present invention;

[0035] Figure 2 This is a SEM image of the non-water-soluble phase of the sustained-release dyeing material provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementations. It should be understood by those skilled in the art that the specific implementations are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0037] In a first aspect, an embodiment of the present invention provides a slow-release dyeing material, wherein the slow-release dyeing material comprises a blended water-soluble phase and a non-water-soluble phase;

[0038] The water-soluble phase includes a water-soluble polymer material and a dyeing component, and the dyeing component includes a dye;

[0039] The water-insoluble phase includes water-insoluble materials.

[0040] The slow-release dyeing material provided by the present invention is prepared by adding dyeing components into water-soluble materials to form water-soluble phase materials, and then blending the water-soluble phase materials with non-water-soluble matrix. When the slow-release dyeing material is in a water environment, the surface water-soluble phase material will release the dyeing components with water dissolution, and a porous structure will be formed on the matrix; the water flow further penetrates into the matrix along the pores, so that the water-soluble phase material in the inner layer of the matrix can also be dissolved with water, thereby realizing the slow release of the dyeing components in the water environment.

[0041] In some embodiments of the present invention, the water-soluble phase and the non-aqueous-soluble phase are both continuous phases.

[0042] In the present invention, the continuous phase refers to the water-soluble phase or the non-water-soluble phase in the sustained-release dyeing material as a continuous whole, which is a continuous network structure in the sustained-release dyeing material. When the water-soluble phase and the non-water-soluble phase are both continuous phases, a co-continuous structure is formed, which can ensure that the water-soluble phase can be completely dissolved with water, and on the other hand, the continuous non-water-soluble phase can provide a certain support effect to prevent the sustained-release dyeing material from collapsing during the dissolution of the water-soluble phase.

[0043] In some embodiments of the present invention, the short side size of the phase region of the water-soluble phase is 100nm to 10μm, for example, it can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.; the short side size of the phase region of the non-aqueous phase is 100nm~10μm, for example, it can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.

[0044] It should be noted that the short side size of the phase region in the present invention refers to the minimum size of the phase region in different cross-sectional shapes in the direction passing through the center of the cross-sectional shape. For example, when the phase region at a certain location is cylindrical, the short side size of the phase region at that location is the diameter of the cylinder; when the phase region at a certain location is a thin sheet, the short side size of the phase region at that location is the thickness of the thin sheet.

[0045] In some embodiments of the present invention, the dissolution rate of the sustained-release coloring material in water is 0.0001 g / L to 0.003 g / L; for example, it can be 0.0001 g / L, 0.0002 g / L, 0.0003 g / L, 0.0004 g / L, 0.0005 g / L, 0.0006 g / L, 0.0007 g / L, 0.0008 g / L, 0.0009 g / L, 0.001 g / L, 0.0012 g / L, 0.0015 g / L, 0.0018 g / L, 0.002 g / L, 0.0022 g / L, 0.0025 g / L, 0.0028 g / L or 0.003 g / L, etc.

[0046] The dissolution rate test method is as follows: the solid aromatherapy material is prepared into a sample of 10 mm×10 mm×4 mm, with a mass of m1, and is rinsed with tap water at a flow rate of 2.5 L / min at room temperature. After the sample mass is constant, it is taken out and dried, and weighed, with a mass of m2. The volume of the water used for rinsing is v, and the dissolution rate = (m1-m2) / v;

[0047] The criterion for determining constant sample mass is: the mass difference before and after rinsing for 1 hour is less than 0.01 g;

[0048] All samples must be dried in a 60°C forced air drying oven before weighing, and the drying standard is that the mass difference before and after drying for 1 hour is less than 0.01g.

[0049] In some embodiments of the present invention, the mass ratio of the water-soluble phase to the non-aqueous phase is (30-70):(30-70); for example, it can be 30:70, 32:68, 35:65, 38:62, 40:60, 42:58, 45:55, 48:52, 50:50, 52:48, 55:45, 58:42, 60:40, 62:38, 65:35, 68:32 or 70:30, etc. Preferably, it is (40-60):(40-60).

[0050] In some embodiments of the present invention, the mass ratio of the water-soluble polymer material to the dyeing component is (65-75):(25-35); for example, it can be 65:35, 66:34, 67:33, 68:32, 69:31, 70:30, 71:29, 72:28, 73:27, 74:26 or 75:25, etc.

[0051] In some embodiments of the present invention, the dyeing agent is selected from one or more of direct dyes and reactive dyes.

[0052] In some embodiments of the present invention, the dyeing component further comprises a fixing agent.

[0053] Typical but non-limiting examples of the dye-fixing agent include low molecular weight cationic dye-fixing agents, polycationic dye-fixing agents, resin-type dye-fixing agents, and the like.

[0054] In some embodiments of the present invention, the water-soluble polymer material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone.

[0055] In some embodiments of the present invention, the molecular weight of the water-soluble polymer material is 100 to 1 million; for example, it can be 100, 300, 500, 800, 1000, 2000, 3000, 5000, 6000, 8000, 10,000, 20,000, 30,000, 50,000, 80,000, 10,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1 million, etc.

[0056] In some embodiments of the present invention, the molecular weight of the polyvinyl alcohol is 800-5000; for example, it can be 800, 900, 1000, 1200, 1500, 1800, 2000, 2200, 2500, 2800, 3000, 3200, 3500, 3800, 4000, 4200, 4500, 4800 or 5000, etc.

[0057] In some embodiments of the present invention, the molecular weight of the polyethylene glycol is 100-4000; for example, it can be 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc.

[0058] In some embodiments of the present invention, the molecular weight of the polyethylene oxide is 50,000 to 1,000,000; for example, it can be 50,000, 80,000, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.

[0059] In some embodiments of the present invention, the water-insoluble material is a water-insoluble polymer material.

[0060] In some embodiments of the present invention, the water-insoluble polymer material is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers.

[0061] In some embodiments of the present invention, the molecular weight of the water-insoluble polymer material is 30,000 to 300,000; for example, it can be 30,000, 50,000, 80,000, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000 or 300,000, etc.

[0062] In some embodiments of the present invention, the water-soluble polymer material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000 (for example, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.), and the non-water-soluble material is a low-density polyethylene with a molecular weight of 30,000 to 100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000, etc.), and the mass ratio of the water-soluble phase to the non-water-soluble phase is 55:45.

[0063] In some embodiments of the present invention, the water-soluble polymer material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000 (for example, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.), and the water-insoluble material is homopolypropylene with a molecular weight of 80,000 to 150,000 (for example, 80,000, 90,000, 100,000, 110,000, 120,000, 130,000, 140,000 or 150,000, etc.), and the mass ratio of the water-soluble phase to the water-insoluble phase is 60:40.

[0064] In the present invention, the structure and slow-release behavior of the slow-release dyeing material can be controlled by adjusting the type, molecular weight and ratio of the water-soluble polymer material and the water-insoluble material. By controlling these factors within the above-mentioned scope of the present invention, it is helpful to form a co-continuous structure with the water-soluble phase and the water-insoluble phase, and ensure that the obtained slow-release dyeing material has a suitable slow-release rate.

[0065] In the present invention, there is no particular limitation on the preparation method of the slow-release dyeing material. As an exemplary preparation method, it may include the following steps:

[0066] The water-soluble polymer material and the dyeing component are first blended to obtain a water-soluble phase material;

[0067] The water-soluble phase material and the water-insoluble phase material are subjected to a second blending to obtain the slow-release dyeing material.

[0068] Before the second blending, the water-soluble phase material may be granulated to obtain a water-soluble masterbatch; the particle size of the water-soluble masterbatch may be 2-5 mm.

[0069] The first blending and the second blending can be performed using a twin-screw extruder or an internal mixer.

[0070] When a twin-screw extruder is used, the processing temperature of the second blending can be 140-170°C (for example, 140°C, 145°C, 150°C, 155°C, 160°C, 165°C or 170°C, etc.), the screw speed of the second blending can be 50-150rpm (for example, 50rpm, 60rpm, 70rpm, 80rpm, 90rpm, 100rpm, 110rpm, 120rpm, 130rpm, 140rpm or 150rpm, etc.), and the residence time can be 2-5min (for example, 2min, 2.5min, 3min, 3.5min, 4min, 4.5min or 5min, etc.).

[0071] When an internal mixer is used, the mixing processing temperature of the second blending can be 160-180°C (for example, 160°C, 162°C, 165°C, 168°C, 170°C, 172°C, 175°C, 178°C or 180°C, etc.), the rotation speed can be 50-100rpm (for example, 50rpm, 60rpm, 70rpm, 80rpm, 90rpm or 100rpm, etc.), and the mixing time can be 5-10min (for example, 5min, 5.5min, 6min, 6.5min, 7min, 7.5min, 8min, 8.5min, 9min, 9.5min or 10min, etc.).

[0072] In the present invention, the blending method has a certain influence on the size and structure of the water-soluble phase and the non-water-soluble phase. By controlling the blending process conditions within the above range, it is helpful to form a co-continuous structure with a suitable phase domain size for the water-soluble phase and the non-water-soluble phase.

[0073] In a second aspect, an embodiment of the present invention provides a use of the slow-release dyeing material as described in the first aspect in a washing device.

[0074] In a third aspect, an embodiment of the present invention provides a washing device, comprising a dyeing module, wherein the dyeing module contains the slow-release dyeing material described in the first aspect.

[0075] When the washing device provided by the present invention is filled with water, the slow-release dyeing material can slowly release the dyeing components. By utilizing the uniform tumbling and heating functions of the washing device, the dyeing of clothes in a stable state can be simply and conveniently achieved, and the slow-release dyeing material can be used multiple times without adding dyeing components each time.

[0076] The technical solution of the present invention is further described below through specific implementation methods.

[0077] Example 1

[0078] This embodiment provides a slow-release dyeing material, and its structural schematic diagram is as follows Figure 1 As shown, the water-soluble phase ( Figure 1 The middle white area) and the non-aqueous phase ( Figure 1 middle black area);

[0079] Wherein, the water-soluble phase and the water-insoluble phase are both continuous phases;

[0080] The water-soluble phase includes a water-soluble polymer material and a dyeing material, and the non-water-soluble phase includes a water-insoluble polymer material;

[0081] The mass ratio of the water-soluble phase to the non-water-soluble phase is 55:45;

[0082] The mass ratio of the water-soluble polymer material to the dyeing component is 2:1;

[0083] The water-soluble polymer material is polyethylene oxide (Germany's Good Chemical Company, with a number average molecular weight of 300,000), the dyeing component is an active anion dye, and the non-water-soluble polymer material is low-density polyethylene (low-density polyethylene 2426H from Maoming Petrochemical Company, with a number average molecular weight of 90,000).

[0084] The preparation method of the sustained-release dyeing material in this embodiment is as follows:

[0085] (1) drying the polyethylene oxide at a drying temperature of 50° C. for a drying time of 6 h;

[0086] (2) using a twin-screw extruder, the polyethylene oxide and the cedar oil are first blended, the operating temperature of the twin-screw extruder is: the temperature of the first zone is 80° C., the temperature of the second zone is 120° C., the temperature of the third zone is 140° C., the temperature of the fourth zone is 140° C., the temperature of the fifth zone is 140° C., the temperature of the sixth zone is 140° C., and the die temperature is 120° C.; the screw speed is 50 rpm, and the material residence time is 3 min;

[0087] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0088] (3) using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with low-density polyethylene, the operating temperature of the twin-screw extruder is: the temperature of zone 1 is 150° C., the temperature of zone 2 is 160° C., the temperature of zone 3 is 170° C., the temperature of zone 4 is 170° C., the temperature of zone 5 is 170° C., the temperature of zone 6 is 170° C., and the die temperature is 160° C.; the screw speed is 50 rpm, and the material residence time is 3 min;

[0089] The mixture obtained by the second blending is air-cooled to below 50° C. and then granulated to obtain a slow-release dyeing material.

[0090] Example 2

[0091] This embodiment provides a slow-release dyeing material, which is different from Embodiment 1 in that:

[0092] The mass ratio of the water-soluble phase to the non-water-soluble phase is 40:60;

[0093] The mass ratio of water-soluble polymer material to dyeing component is 70:30;

[0094] The water-soluble polymer material is polyethylene glycol (polyethylene glycol-200 from Wuxi Yatai Chemical Industry Co., Ltd., with a number average molecular weight of 200), and the non-water-soluble polymer material is low-density polyethylene (low-density polyethylene 2426H from Maoming Petrochemical Co., Ltd., with a number average molecular weight of 90,000).

[0095] Example 3

[0096] This embodiment provides a slow-release dyeing material, which is different from Embodiment 1 in that:

[0097] The mass ratio of the water-soluble phase to the non-water-soluble phase is 60:40;

[0098] The mass ratio of water-soluble polymer material to dyeing component is 73:25;

[0099] The water-soluble polymer material is polyvinyl alcohol (PVA-1799 from Anhui Wanwei Company, with a number average molecular weight of 1700), and the non-water-soluble polymer material is low-density polyethylene (low-density polyethylene 2426H from Maoming Petrochemical Company, with a number average molecular weight of 90,000).

[0100] Example 4

[0101] This embodiment provides a slow-release dyeing material, which is different from Embodiment 1 in that:

[0102] The mass ratio of the water-soluble phase to the non-water-soluble phase is 65:35;

[0103] The water-insoluble polymer material is homopolymer polypropylene (T30S of Zhongan United Petrochemical Company, with a number average molecular weight of 80,000).

[0104] Example 5

[0105] This embodiment provides a slow-release dyeing material, which is different from Embodiment 4 in that:

[0106] The mass ratio of the water-soluble phase to the non-water-soluble phase is 60:40;

[0107] The mass ratio of water-soluble polymer material to dyeing component is 70:30;

[0108] The water-soluble polymer material is polyethylene oxide (polyethylene oxide from German company Rhodamine, with a number average molecular weight of 1 million), and the water-insoluble polymer material is homopolymer polypropylene (T30S from Zhongan United Petrochemical Company, with a number average molecular weight of 80,000).

[0109] Comparative Example 1

[0110] This comparative example provides a sustained-release dyeing material, which is different from Example 1 only in that the mass ratio of the water-soluble phase to the water-insoluble phase is 20:80.

[0111] Comparative Example 2

[0112] This comparative example provides a sustained-release dyeing material, which is different from Example 1 only in that the mass ratio of the water-soluble phase to the water-insoluble phase is 80:20.

[0113] Performance Test:

[0114] The performance of the slow-release dyeing materials provided in the above examples and comparative examples were tested respectively, and the testing methods were as follows:

[0115] Tensile strength and elongation at break: The tensile properties were tested using a universal tensile testing machine. The test standard was GB / T1040-2006 and the tensile rate was 50 mm / min.

[0116] The test method of dissolution rate is as follows: the solid aromatherapy material is prepared into a sample of 10mm×10mm×4mm, with a mass of m1, and is rinsed with tap water at a flow rate of 2.5L / min at room temperature. After the mass of the sample is constant, it is taken out and dried, and weighed, with a mass of m2. The volume of the water used for rinsing is v, and the dissolution rate = (m1-m2) / v;

[0117] The criterion for determining constant sample mass is: the mass difference before and after rinsing for 1 hour is less than 0.01 g;

[0118] All samples must be dried in a 60°C forced air drying oven before weighing, and the drying standard is that the mass difference before and after drying for 1 hour is less than 0.01g.

[0119] Water-soluble phase continuity: prepare the solid aromatherapy material into a sample of 10mm×10mm×4mm, and weigh the mass m1; soak the sample in 30℃ water until the mass does not change, take out and dry, and weigh the mass m2; Water-soluble phase continuity = the mass of the water-soluble phase dissolved in the sample / theoretical mass of the water-soluble phase, the mass of the dissolved water-soluble phase = m1-m2.

[0120] Morphology characterization: Scanning electron microscopy (SEM) was used to observe the morphology of the sustained-release dyeing material after immersion.

[0121] The results of the above tests are shown in Table 1 below:

[0122] Table 1

[0123]

[0124] It can be seen from the test results in Table 1 that the tensile strength of the sustained-release dyeing material provided by the present invention is 5MPa-20MPa, the elongation at break is 5%-600%, the continuity of the water-soluble phase reaches 100%, and the dissolution rate in water is 0.0001g / L-0.003g / L.

[0125] The surface morphology of the slow-release dyeing material provided in Example 1 after immersion (non-water-soluble phase) is as follows: Figure 2 As shown. Figure 2 It can be seen that the non-aqueous phase is continuous, and the short side dimensions of the phase regions of the non-aqueous phase and the aqueous phase (the void portion in the figure) are in the range of 100 nm to 10 μm.

[0126] Compared with Example 1, since the proportion of the water-soluble phase in Comparative Example 1 is relatively low, the continuity of the sustained-release dyeing material obtained is low, and a co-continuous structure cannot be formed. The dye component is difficult to be completely released and the release rate is slow. Since the proportion of the non-water-soluble phase in Comparative Example 2 is relatively low, the dissolution rate of the sustained-release dyeing material obtained is too fast, and the material is easy to disintegrate.

[0127] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sustained-release dyeing material, characterized in that: The slow-release dyeing material includes a blended water-soluble phase and a water-insoluble phase; The water-soluble phase includes a water-soluble polymer material and a dyeing component, and the dyeing component includes a dye; The water-insoluble phase includes water-insoluble materials.

2. The sustained-release dyeing material according to claim 1, characterized in that: The water-soluble phase and the non-aqueous phase are both continuous phases.

3. The slow-release dyeing material according to claim 1 or 2, characterized in that: The short side size of the phase region of the water-soluble phase is 100nm to 10μm, and the short side size of the phase region of the non-water-soluble phase is 100nm to 10μm; Preferably, the dissolution rate of the slow-release dyeing material in water is 0.0001 g / L to 0.003 g / L; The test method of the dissolution rate is as follows: the solid aromatherapy material is prepared into a sample of 10mm×10mm×4mm with a mass of m1, and is rinsed with tap water at a flow rate of 2.5L / min. After the mass of the sample is constant, it is taken out and dried, and weighed, with a mass of m2. The volume of the water used for rinsing is v, and the dissolution rate = (m1-m2) / v.

4. The sustained-release dyeing material according to any one of claims 1 to 3, characterized in that: The mass ratio of the water-soluble phase to the non-water-soluble phase is (30-70):(30-70), preferably (40-60):(40-60).

5. The slow-release dyeing material according to any one of claims 1 to 4, characterized in that: The mass ratio of the water-soluble polymer material to the dyeing component is (65-75):(25-35); Preferably, the dye is selected from one or more of direct dyes and reactive dyes; Preferably, the dyeing component further comprises a fixing agent.

6. The sustained-release dyeing material according to any one of claims 1 to 5, characterized in that: The water-soluble polymer material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone; Preferably, the molecular weight of the water-soluble polymer material is 1 to 1 million; Preferably, the molecular weight of the polyvinyl alcohol is 800 to 5000; Preferably, the molecular weight of the polyethylene glycol is 100 to 4000; Preferably, the molecular weight of the polyethylene oxide is 50,000 to 1,000,000.

7. The sustained-release dyeing material according to any one of claims 1 to 6, characterized in that: The water-insoluble material is a water-insoluble polymer material; Preferably, the water-insoluble polymer material is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers; Preferably, the molecular weight of the water-insoluble polymer material is 30,000 to 300,000.

8. The sustained-release dyeing material according to any one of claims 1 to 7, characterized in that: The water-soluble polymer material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000, the water-insoluble material is low-density polyethylene with a molecular weight of 30,000 to 100,000, and the mass ratio of the water-soluble phase to the water-insoluble phase is 55:45; Alternatively, the water-soluble polymer material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000, the water-insoluble material is homopolypropylene with a molecular weight of 80,000 to 150,000, and the mass ratio of the water-soluble phase to the water-insoluble phase is 60:

40.

9. Use of the slow-release dyeing material according to any one of claims 1 to 8 in a washing device.

10. A washing device, characterized in that: The washing device comprises a dyeing module, and the dyeing module contains the slow-release dyeing material according to any one of claims 1-8.

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