Yarn photocuring dyeing method

Abstract

The invention belongs to the technical field of fiber textile, and provides a yarn photocuring dyeing method which comprises the following steps: preparing photocuring color paste, and then pretreating to obtain pretreated color paste; the pretreatment color paste is used for sizing the yarn, and dyeing is completed after light curing. The method provided by the invention is simple, the yarn is colored by adopting a photocuring mode, the time is short, the efficiency is high, and the efficient coloring of the yarn can be realized while the time is shortened on a large scale; the pigment can be firmly fixed on the surface of the yarn and cannot fade after being washed for multiple times; the investment cost is low, and no pollution is caused to the environment. The method provided by the invention is simple, efficient and suitable for large-scale popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of fiber textiles, in particular to a yarn light-curing dyeing method. Background Art

[0002] Fiber is a substance composed of continuous or discontinuous filaments. It is widely used in textile, military, environmental protection and other fields, but the most widely used is still in the textile field. After meeting the basic needs of warmth, clothing has gradually become a carrier of expressing personality; brightly colored fabrics are very popular in the market. The color of the fabric is obtained from the dyeing of the yarn, so how to dye the yarn becomes an important step. There are two main methods for dyeing yarn. The first is the most widespread dyeing, which directly mixes the yarn and the pigment; the second is to adhere the colored particles to the fabric. Among the widespread dyeing, the conventional methods are: hank dyeing - soaking the loose hank in a special dyeing vat for dyeing; bobbin dyeing - bobbin dyed yarn is wound on a bobbin with holes, and then many bobbins are loaded into the dyeing vat, and the dye liquid circulates; warp dyeing - a large-scale package dyeing, before shuttle weaving manufacturing, a warp beam (warping) must be made first, and the yarn of the entire warp beam is dyed. The above three dyeing methods not only consume a lot of water, but also have weak colors and poor coloring effects. Recently developed dyeing methods include liquid ammonia dyeing, plasma dyeing and supercritical dyeing. Although these three methods have good coloring effects, they all have disadvantages: liquid ammonia and supercritical dyeing require huge equipment investment, high costs, difficult cost recovery, and the risk of raw material leakage; plasma dyeing is extremely polluting and has irreparable damage to the environment. Therefore, providing a dyeing method with low cost and good coloring effect has become an urgent problem to be solved in the textile field. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a yarn light-curing dyeing method.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] The present invention provides a yarn light-curing dyeing method, comprising the following steps:

[0006] (1) Pre-treating the prepared photocurable color paste to obtain a pre-treated color paste;

[0007] (2) The yarn is sized using pre-treated color paste and dyed after light curing.

[0008] Preferably, the photocurable color paste in step (1) comprises the following raw materials in parts by weight:

[0009] 10-50 parts of acrylic resin, 40-60 parts of diluent, 1-5 parts of photoinitiator, 1-2 parts of leveling agent, 5-10 parts of pigment, 1-3 parts of antistatic agent, and 1-5 parts of polyvinyl alcohol.

[0010] Preferably, the acrylic resin is one or more of butyl acrylate, ethyl acrylate, isobornyl acrylate, acrylic acid, methyl methacrylate, butyl methacrylate, isobornyl methacrylate, cyclohexanedimethanol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, ethylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, and 1,6-hexanediol dimethacrylate.

[0011] Preferably, the diluent is one or more of butyl acetate, polydipentaerythritol pentaacrylate and butyl glycidyl ether;

[0012] The photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone, benzoin dimethyl ether, diphenyl-(2,4,6-trimethylbenzoyl)phosphine oxide, 2-isopropylthioxanthone and 4-dimethylamino-ethyl benzoate.

[0013] Preferably, the leveling agent comprises one or more of BYK-501A, BYK-056, BYK-333 and BYK-320;

[0014] The pigment comprises one or more of red iron oxide, methyl red, carbon black and malachite green;

[0015] The antistatic agent includes antistatic agent TF-480 and antistatic agent SN;

[0016] The mass ratio of the antistatic agent TF-480 to the antistatic agent SN is 1-2:1-2.

[0017] Preferably, the pretreatment power in step (1) is 30 to 50 W and the time is 1 to 3 minutes.

[0018] Preferably, the yarn in step (2) is aramid fiber, polyester fiber, acrylic fiber, nylon fiber, spandex fiber, polypropylene fiber, cotton fiber, linen fiber, wool fiber, silk fiber or a blended fiber.

[0019] Preferably, the sizing speed in step (2) is 20-25 m / min and the pressure is 10-15 kN.

[0020] Preferably, the temperature of the light curing in step (2) is 40-60° C. and the power is 0.8-1.2 kW;

[0021] The light curing method in step (2) is UV curing, and the light source of the light curing is a high-pressure mercury lamp.

[0022] Preferably, the light curing distance in step (2) is 5 to 10 cm and the time is 30 to 40 seconds.

[0023] The present invention provides a method for light-curing dyeing of yarns, comprising the following steps: pre-treating after configuring light-curing color paste to obtain pre-treated color paste; sizing the yarns with the pre-treated color paste, and completing dyeing after light curing. The method provided by the present invention is simple, and uses light curing to color the yarns, which is short in time and high in efficiency. While greatly shortening the time, it can also achieve efficient coloring of the yarns; the pigment can be firmly fixed on the surface of the yarns, and will not fade after multiple washings; the investment cost is low, and it will not cause pollution to the environment. The method provided by the present invention is simple, efficient, and suitable for large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the process of yarn dyeing of the present invention. DETAILED DESCRIPTION

[0025] The present invention provides a yarn light-curing dyeing method, comprising the following steps:

[0026] (1) Pre-treating the prepared photocurable color paste to obtain a pre-treated color paste;

[0027] (2) The yarn is sized using pre-treated color paste and dyed after light curing.

[0028] In the present invention, the photocurable color paste in step (1) comprises the following raw materials in parts by weight:

[0029] 10-50 parts of acrylic resin, 40-60 parts of diluent, 1-5 parts of photoinitiator, 1-2 parts of leveling agent, 5-10 parts of pigment, 1-3 parts of antistatic agent, and 1-5 parts of polyvinyl alcohol.

[0030] In the present invention, the mass fraction of the acrylic resin is preferably 15 to 45 parts, more preferably 20 to 40 parts, and even more preferably 25 to 35 parts.

[0031] In the present invention, the mass fraction of the diluent is preferably 42 to 58 parts, more preferably 45 to 55 parts, and even more preferably 48 to 52 parts.

[0032] In the present invention, the mass fraction of the photoinitiator is preferably 1.5 to 4.5 parts, more preferably 2 to 4 parts, and even more preferably 2.5 to 3.5 parts.

[0033] In the present invention, the mass fraction of the leveling agent is preferably 1.1 to 1.9 parts, more preferably 1.2 to 1.8 parts, and even more preferably 1.4 to 1.6 parts.

[0034] In the present invention, the weight percentage of the pigment is preferably 5.5 to 9.5 parts, more preferably 6 to 9 parts, and even more preferably 7 to 8 parts.

[0035] In the present invention, the weight percentage of the antistatic agent is preferably 1.5 to 2.5 parts, more preferably 1.6 to 2.4 parts, and even more preferably 1.8 to 2.2 parts.

[0036] In the present invention, the mass fraction of the polyvinyl alcohol is preferably 1.5 to 4.5 parts, more preferably 2 to 4 parts, and even more preferably 2.5 to 3.5 parts.

[0037] In the present invention, the acrylic resin is one or more of butyl acrylate, ethyl acrylate, isobornyl acrylate, acrylic acid, methyl methacrylate, butyl methacrylate, isobornyl methacrylate, cyclohexanedimethanol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, ethylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, and 1,6-hexanediol dimethacrylate.

[0038] In the present invention, the diluent is one or more of butyl acetate, polydipentaerythritol pentaacrylate and butyl glycidyl ether.

[0039] In the present invention, the photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone, benzoin dimethyl ether, diphenyl-(2,4,6-trimethylbenzoyl)phosphine oxide, 2-isopropylthioxanthone and 4-dimethylamino-ethyl benzoate.

[0040] In the present invention, the leveling agent comprises one or more of BYK-501A, BYK-056, BYK-333 and BYK-320.

[0041] In the present invention, the pigment comprises one or more of red iron oxide, methyl red, carbon black and malachite green.

[0042] In the present invention, the antistatic agent includes antistatic agent TF-480 and antistatic agent SN.

[0043] In the present invention, the mass ratio of the antistatic agent TF-480 to the antistatic agent SN is preferably 1-2:1-2, more preferably 1.2-1.8:1.2-1.8, and more preferably 1.4-1.6:1.4-1.6.

[0044] In the present invention, the power of the pretreatment in step (1) is preferably 30 to 50 W, more preferably 35 to 45 W, and more preferably 38 to 42 W; the time is preferably 1 to 3 min, more preferably 1.5 to 2.5 min, and more preferably 1.8 to 2.2 min. The purpose of the pretreatment is to perform preliminary drying, thereby shortening the time for subsequent light curing.

[0045] In the present invention, the yarn in step (2) is aramid fiber, polyester fiber, acrylic fiber, nylon fiber, spandex fiber, polypropylene fiber, cotton fiber, linen fiber, wool fiber, silk fiber or blended fiber.

[0046] In the present invention, the sizing speed in step (2) is preferably 20-25 m / min, more preferably 21-24 m / min, and more preferably 22-23 m / min; the pressure is preferably 10-15 kN, more preferably 11-14 kN, and more preferably 12-13 kN; by using the pressure sizing method, the fiber and the slurry are in more complete contact and the coloring is more uniform.

[0047] In the present invention, the temperature of the photocuring in step (2) is preferably 40-60°C, more preferably 45-55°C, and more preferably 48-52°C; the power is preferably 0.8-1.2kW, more preferably 0.9-1.1kW, and more preferably 0.95-1kW.

[0048] In the present invention, the light curing method in step (2) is UV curing, and the light source of the light curing is a high-pressure mercury lamp.

[0049] In the present invention, the distance of the light curing in step (2) is preferably 5 to 10 cm, more preferably 6 to 9 cm, and more preferably 7 to 8 cm; the time is preferably 30 to 40 s, more preferably 32 to 38 s, and more preferably 34 to 36 s.

[0050] The process schematic diagram of yarn dyeing of the present invention is as follows Figure 1 shown.

[0051] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0052] Example 1

[0053] Color paste configuration:

[0054] 40 parts of acrylic resin, 50 parts of diluent, 4 parts of photoinitiator, 1.4 parts of leveling agent, 8 parts of pigment, 2 parts of antistatic agent, and 2 parts of polyvinyl alcohol; wherein the acrylic resin is butyl acrylate, the diluent is butyl acetate, the photoinitiator is benzoin dimethyl ether, the leveling agent is BYK-320, the pigment is methyl red, and the mass ratio of antistatic agent TF-480 and antistatic agent SN in the antistatic agent is 1:1.

[0055] After the above raw materials are mixed evenly, they are treated at 40W for 2 minutes to obtain pre-treated color paste; then aramid fiber is used for sizing at 24m / min and 12kN, and finally placed in a light curing box, with a high-pressure mercury lamp as the light source, UV curing is performed, and the temperature is controlled at 50°C, 1kW, the distance is 8cm, and the time is 35s for curing to complete the dyeing.

[0056] Example 2

[0057] 23 parts of acrylic resin, 47 parts of diluent, 2 parts of photoinitiator, 1.6 parts of leveling agent, 9 parts of pigment, 1 part of antistatic agent, and 4 parts of polyvinyl alcohol; wherein the acrylic resin is ethyl acrylate, the diluent is butyl acetate, the photoinitiator is 1-hydroxycyclohexyl phenyl ketone, the leveling agent is BYK-056, the pigment is red iron oxide, and the mass ratio of antistatic agent TF-480 and antistatic agent SN in the antistatic agent is 2:1.

[0058] After the above raw materials are mixed evenly, they are treated at 32W for 1 minute to obtain a pre-treated color paste; then the polyester fiber is sized at 21m / min and 14kN, and finally placed in a light curing box, using a high-pressure mercury lamp as a light source for UV curing, controlling the temperature to 42°C, 0.9kW, the distance to 6cm, and the time to cure for 34s to complete the dyeing.

[0059] Example 3

[0060] 18 parts of acrylic resin, 52 parts of diluent, 4 parts of photoinitiator, 1.5 parts of leveling agent, 5 parts of pigment, 3 parts of antistatic agent, and 2 parts of polyvinyl alcohol; wherein the acrylic resin is isobornyl acrylate, the diluent is polydipentaerythritol pentaacrylate, the photoinitiator is diphenyl-(2,4,6-trimethylbenzoyl)phosphine oxide, the leveling agent is BYK-501A, the pigment is carbon black, and the mass ratio of antistatic agent TF-480 and antistatic agent SN in the antistatic agent is 1:2.

[0061] After the above raw materials are mixed evenly, they are treated at 40W for 3 minutes to obtain a pre-treated color paste; then acrylic fiber is used for sizing at 20m / min and 15kN, and finally placed in a light curing box, using a high-pressure mercury lamp as a light source for UV curing, controlling the temperature to 55°C, 1.2kW, the distance to 8cm, and the time to cure for 40s to complete the dyeing.

[0062] Example 4

[0063] 43 parts of acrylic resin, 45 parts of diluent, 3 parts of photoinitiator, 1.3 parts of leveling agent, 6 parts of pigment, 2.3 parts of antistatic agent, and 2 parts of polyvinyl alcohol; wherein the acrylic resin is acrylic acid, the diluent is butyl glycidyl ether, the photoinitiator is 2-isopropylthioxanthone, the leveling agent is BYK-333, the pigment is malachite green, and the mass ratio of antistatic agent TF-480 and antistatic agent SN in the antistatic agent is 1.5:2.

[0064] After the above raw materials are mixed evenly, they are treated at 38W for 3 minutes to obtain a pre-treated color paste; then acrylic fiber is used for sizing at 23m / min and 11kN, and finally placed in a light curing box, using a high-pressure mercury lamp as a light source for UV curing, controlling the temperature to 47°C, 1.1kW, the distance to 6cm, and the time to cure for 34s to complete the dyeing.

[0065] The color fastness of the yarns dyed in Examples 1 to 4 was tested, the color fastness to water was tested according to GB / T5713-2013, the color fastness to rubbing was tested according to GB / T3920-2008, the color fastness to perspiration was tested according to GB / T3922-1995, and the color fastness to soaping was tested according to GB / T3921-2008. The results are recorded in Table 1.

[0066] Table 1 Color fastness test results

[0067]

[0068]

[0069] It can be seen from the above embodiments that the yarn photocuring dyeing method provided by the present invention dyes the yarn by photocuring, which is shorter than the traditional dyeing time and saves resources. The color paste is combined with the yarn by photocuring, which effectively improves the color fixing performance and has good color fastness.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A yarn light-curing dyeing method, characterized in that: It includes the following steps: (1) Pre-treating the prepared photocurable color paste to obtain a pre-treated color paste; (2) The yarn is sized using pre-treated color paste and dyed after light curing.

2. The yarn light-curing dyeing method according to claim 1, characterized in that: The photocurable color paste in step (1) comprises the following raw materials in parts by weight: 10-50 parts of acrylic resin, 40-60 parts of diluent, 1-5 parts of photoinitiator, 1-2 parts of leveling agent, 5-10 parts of pigment, 1-3 parts of antistatic agent, and 1-5 parts of polyvinyl alcohol.

3. The yarn light-curing dyeing method according to claim 2, characterized in that: The acrylic resin is one or more of butyl acrylate, ethyl acrylate, isobornyl acrylate, acrylic acid, methyl methacrylate, butyl methacrylate, isobornyl methacrylate, cyclohexanedimethanol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, ethylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, and 1,6-hexanediol dimethacrylate.

4. The yarn light-curing dyeing method according to claim 3, characterized in that: The diluent is one or more of butyl acetate, polydipentaerythritol pentaacrylate and butyl glycidyl ether; The photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone, benzoin dimethyl ether, diphenyl-(2,4,6-trimethylbenzoyl)phosphine oxide, 2-isopropylthioxanthone and 4-dimethylamino-ethyl benzoate.

5. The yarn light-curing dyeing method according to claim 2, characterized in that: The leveling agent comprises one or more of BYK-501A, BYK-056, BYK-333 and BYK-320; The pigment comprises one or more of red iron oxide, methyl red, carbon black and malachite green; The antistatic agent includes antistatic agent TF-480 and antistatic agent SN; The mass ratio of the antistatic agent TF-480 to the antistatic agent SN is 1-2:1-2.

6. The method for light-curing dyeing of yarn according to any one of claims 1 to 5, characterized in that: The pretreatment power in step (1) is 30 to 50 W and the time is 1 to 3 minutes.

7. The yarn light-curing dyeing method according to claim 6, characterized in that: The yarn in step (2) is aramid fiber, polyester fiber, acrylic fiber, nylon fiber, spandex fiber, polypropylene fiber, cotton fiber, linen fiber, wool fiber, silk fiber or blended fiber.

8. The yarn light-curing dyeing method according to claim 1 or 7, characterized in that: The sizing speed in step (2) is 20-25 m / min, and the pressure is 10-15 kN.

9. The yarn light-curing dyeing method according to claim 8, characterized in that: The light curing temperature in step (2) is 40-60° C. and the power is 0.8-1.2 kW; The light curing method in step (2) is UV curing, and the light source of the light curing is a high-pressure mercury lamp.

10. The yarn light-curing dyeing method according to claim 9, characterized in that: The light curing distance in step (2) is 5 to 10 cm and the time is 30 to 40 seconds.

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