Textile digital inkjet printing resin and preparation method thereof

Abstract

This application discloses a textile digital inkjet printing resin and a preparation method thereof, comprising a water-based acrylate resin and a water-based polyurethane resin, wherein the weight ratio of the water-based acrylate resin to the water-based polyurethane resin is 1:(3-4); the water-based acrylate resin is prepared from a specific ratio of a hydroxy acrylate monomer, an alkyl acrylate monomer, an alkyl methacrylate monomer, a modified monomer, trimethylolpropane triacrylate, a photoinitiator, an emulsifier, an oxidant, a reducing agent, and water, wherein the modified monomer includes at least 4-amino-3-fluoroallyl benzoate; and the water-based polyurethane resin is prepared from a specific ratio of polytetramethylene ether glycol, an amino-terminated polyether, a dihydroxy-terminated polydimethylsiloxane, an aromatic diisocyanate, a chain extender, a catalyst, and acetone. The textile digital inkjet printing resin of this application not only facilitates the dispersion of M-type reactive dyes but also improves the stability of inkjet-printed patterns.

Description

Technical Field

[0001] The present application relates to the field of digital printing resins, and in particular to a textile digital inkjet printing resin and a preparation method thereof. Background Art

[0002] M-type reactive dyes contain a monochlorotriazine active group and a double active group of β-hydroxyethyl sulfone sulfate in their molecules. This type of dye has strong reaction activity, higher acid and alkali stability than K-type and KN-type, and high fixation rate. It is widely used in dyeing and printing of cotton fabrics.

[0003] However, existing digital inkjet printing resins have poor compatibility with M-type reactive dyes, which causes the M-type reactive dyes to easily agglomerate. This not only easily causes nozzle clogging and affects the normal printing of patterns, but also affects the clarity and integrity of the printed patterns.

[0004] Therefore, it is of great research significance to provide a textile digital inkjet printing resin with good compatibility with M-type reactive dyes. Summary of the Invention

[0005] In order to improve the problems of poor compatibility and poor dispersibility of M-type reactive dyes with digital inkjet printing resins in the related art, the present application provides a textile digital inkjet printing resin and a preparation method thereof, aiming to improve the dispersibility problem of M-type reactive dyes in digital inkjet printing resins.

[0006] In the first aspect, the technical solution adopted by the textile digital inkjet printing resin provided in this application is as follows:

[0007] A textile digital inkjet printing resin, comprising a water-based acrylate resin and a water-based polyurethane resin, wherein the weight ratio of the water-based acrylate resin to the water-based polyurethane resin is 1:(3-4);

[0008] The water-based acrylic resin is prepared from a hydroxy acrylate monomer, an alkyl acrylate monomer, an alkyl methacrylate monomer, a modified monomer, trimethylolpropane triacrylate, a photoinitiator, an emulsifier, an oxidant, a reducing agent, and water in a weight ratio of (45-55): (20-30): (10-15): (10-15): (15-20): (1.5-2): (1-2): (1-1.5): (0.5-0.75): 300, wherein the modified monomer comprises at least 4-amino-3-fluoroallyl benzoate;

[0009] The waterborne polyurethane resin is prepared from polytetramethylene ether glycol, amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate, chain extender, catalyst and acetone in a weight ratio of (40-50): (10-15): (15-20): (20-25): (2-3): (0.1-0.2): 100.

[0010] In the present application, the textile digital inkjet printing resin includes a specific ratio of water-based acrylate resin and water-based polyurethane resin, and the water-based acrylate resin is prepared by hydroxy acrylate monomer, alkyl acrylate monomer, alkyl methacrylate monomer, modified monomer, etc., and the water-based polyurethane resin is prepared by polytetramethylene ether glycol, amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate, etc. Among them, the present application can form a continuous and uniform film on the surface of the fabric through the combination of specific water-based acrylate resin and water-based polyurethane resin, and can enhance the adhesion and soap resistance of the printed pattern, which is conducive to improving the stability of the printed pattern. In addition, the textile digital inkjet printing resin has good compatibility with M-type reactive dyes. M-type reactive dyes can be directly and evenly dispersed in the textile digital inkjet printing resin to form a stable and evenly dispersed inkjet ink. The inkjet ink has good fineness and fluidity, is not prone to the problem of nozzle clogging, and the digital inkjet printed pattern is complete and clear, the color is uniform, and the inkjet printing quality is good.

[0011] Preferably, the modified monomer is a composition of 2-amino-4,4-dimethyl ethyl pentanoate, 2-amino-4-methyl-5-phospho-3-pentenoate and 4-amino-3-fluoroallyl benzoate, and the weight ratio of the 2-amino-4,4-dimethyl ethyl pentanoate, 2-amino-4-methyl-5-phospho-3-pentenoate and 4-amino-3-fluoroallyl benzoate is 2:(3-4):(4-5).

[0012] In the present application, the modified monomer of the textile digital inkjet printing resin adopts a composition with a weight ratio of 2-amino-4,4-dimethyl ethyl pentanoate, 2-amino-4-methyl-5-phospho-3-pentenoate and 4-amino-3-fluoroallyl benzoate of 2:(3-4):(4-5), which is beneficial to further improve the dispersion stability of the M-type reactive dye. Even if stored for a long time, the problem of aggregation of the M-type reactive dye is not likely to occur, which is beneficial to obtain a clear, complete and uniformly colored printed pattern.

[0013] In some specific embodiments, the hydroxyacrylate monomer is at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, and hydroxybutyl methacrylate; the alkyl acrylate monomer is at least one of methyl acrylate, ethyl acrylate, and butyl acrylate; and the alkyl methacrylate monomer is at least one of methyl methacrylate, ethyl methacrylate, and butyl methacrylate.

[0014] In some specific embodiments, the photoinitiator is at least one of benzoin isopropyl ether, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide.

[0015] In some specific embodiments, the emulsifier is at least one of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether.

[0016] In some specific embodiments, the oxidizing agent is at least one of sodium persulfate, potassium persulfate, and ammonium persulfate, and the reducing agent is at least one of sodium bisulfite, sodium sulfite, and ascorbic acid.

[0017] In some specific embodiments, the molecular weight of the polytetramethylene ether glycol is 1500-2000, the average molecular weight of the amino-terminated polyether is 4500-5500, and the viscosity of the bishydroxy-terminated polydimethylsiloxane is 25-35 mm 2 / s.

[0018] In the present application, controlling the molecular weight of polytetramethylene ether glycol, the average molecular weight of amino-terminated polyether, and the viscosity of dihydroxy-terminated polydimethylsiloxane is not only beneficial to the dispersion of M-type reactive dyes, but also beneficial to improving the stability of inkjet printed patterns.

[0019] In some specific embodiments, the aromatic diisocyanate is at least one of toluene diisocyanate and diphenylmethane diisocyanate.

[0020] In some specific embodiments, the chain extender is at least one of a small molecule diamine and a small molecule diol.

[0021] In a second aspect, the method for preparing any of the above-mentioned textile digital inkjet printing resins provided in this application adopts the following technical solution:

[0022] A textile digital inkjet printing resin comprises the following steps:

[0023] S1. Preparation of water-based acrylic resin:

[0024] Add the oxidant to 10-15% by weight of water and mix well to prepare an oxidant solution;

[0025] Add the reducing agent to 10-15% by weight of water and mix well to prepare a reducing agent solution;

[0026] After uniformly mixing the hydroxy acrylate monomer, the alkyl acrylate monomer, the alkyl methacrylate monomer, and the modified monomer, an emulsifier and the remaining water are added to prepare a premixed monomer;

[0027] Add the oxidant solution and the reducing agent solution dropwise to the premixed monomer, control the reaction temperature to 80-85° C., react for 4-5 hours, then add trimethylolpropane triacrylate and a photoinitiator, mix well, and obtain a water-based acrylate resin;

[0028] S2. Preparation of waterborne polyurethane resin:

[0029] Dehydrate polytetramethylene ether glycol and heat it to 45-50°C. After dissolving, add amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate and catalyst, heat it to 65-75°C and react for 3-4 hours, then add acetone, dilute it, add chain extender, continue to react at 65-75°C for 1-1.5 hours, and finally remove acetone by vacuum to obtain waterborne polyurethane resin; S3, preparation of textile digital inkjet printing resin:

[0030] The water-based acrylate resin and the water-based polyurethane resin are uniformly mixed according to a proportion to obtain a textile digital inkjet printing resin.

[0031] The present application adopts the above method to prepare textile digital inkjet printing resin, which is conducive to obtaining textile digital inkjet printing resin with stable product quality.

[0032] In summary, this application has at least the following beneficial technical effects:

[0033] (1) In the present application, the textile digital inkjet printing resin includes a water-based acrylic resin and a water-based polyurethane resin in a specific ratio, and the water-based acrylic resin is prepared from hydroxy acrylate monomers, alkyl acrylate monomers, alkyl methacrylate monomers, modified monomers, etc., and the water-based polyurethane resin is prepared from polytetramethylene ether glycol, amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate, etc. Among them, the present application can form a continuous and uniform film on the surface of the fabric by combining a specific water-based acrylic resin with a water-based polyurethane resin, and can enhance the adhesion and soap resistance of the printed pattern, which is beneficial to improving the stability of the printed pattern. In addition, the textile digital inkjet printing resin has good compatibility with M-type reactive dyes. The M-type reactive dyes can be directly and evenly dispersed in the textile digital inkjet printing resin to form a stable and evenly dispersed inkjet ink. The inkjet ink has good fineness and fluidity, is not prone to the problem of nozzle clogging, and the digital inkjet printed pattern is complete and clear, the color is uniform, and the inkjet printing quality is good.

[0034] (2) In the present application, the modified monomer of the textile digital inkjet printing resin adopts a composition of 2-amino-4,4-dimethyl ethyl pentanoate, 2-amino-4-methyl-5-phospho-3-pentenoate and 4-amino-3-fluoroallyl benzoate in a weight ratio of 2:(3-4):(4-5), which is beneficial to further improve the dispersion stability of the M-type reactive dye. Even if it is stored for a long time, the problem of aggregation of the M-type reactive dye is not easy to occur, which is beneficial to obtain a clear, complete and uniformly colored printed pattern. DETAILED DESCRIPTION

[0035] The present application is further described below in conjunction with specific experiments.

[0036] Example

[0037] [Example 1]

[0038] A textile digital inkjet printing resin comprises a water-based acrylate resin and a water-based polyurethane resin, wherein the weight ratio of the water-based acrylate resin to the water-based polyurethane resin is 1:3.

[0039] Wherein, the raw materials for preparing water-based acrylic resin are:

[0040] Hydroxyacrylate monomer: 45kg, hydroxyethyl acrylate is used as the hydroxyacrylate monomer;

[0041] Alkyl acrylate monomer: 30 kg, ethyl acrylate is used as the alkyl acrylate monomer;

[0042] Alkyl methacrylate monomer: 10 kg, the alkyl methacrylate monomer is methyl methacrylate;

[0043] Modified monomer: 15 kg, the modified monomer is 4-amino-3-fluoroallyl benzoate;

[0044] Trimethylolpropane triacrylate: 15kg;

[0045] Photoinitiator: 1.5 kg; the photoinitiator is benzoin isopropyl ether;

[0046] Emulsifier: 1kg; the emulsifier is fatty alcohol polyoxyethylene ether AEO-9;

[0047] Oxidant: 1kg; the oxidant is sodium persulfate;

[0048] Reducing agent: 0.5kg; the reducing agent is sodium bisulfite;

[0049] Water: 300kg.

[0050] In addition, the raw materials for preparing waterborne polyurethane resin are:

[0051] Polytetramethylene ether glycol: 40 kg, the molecular weight of polytetramethylene ether glycol is 2000;

[0052] Amino-terminated polyether: 15kg, the amino-terminated polyether adopts amino-terminated polyether T5000, with an average molecular weight of about 5000;

[0053] Bis-hydroxyl-terminated polydimethylsiloxane: 20 kg, the viscosity of bis-hydroxyl-terminated polydimethylsiloxane is 25 mm 2 / s;

[0054] Aromatic diisocyanate: 20kg, the aromatic diisocyanate is toluene diisocyanate;

[0055] Chain extender: 2kg, the chain extender is 1,4-butanediol;

[0056] Catalyst: 0.1 kg, the catalyst used is dibutyltin dilaurate;

[0057] Acetone: 100kg.

[0058] In this embodiment, the preparation method of textile digital inkjet printing resin includes the following steps:

[0059] S1. Preparation of water-based acrylic resin:

[0060] The oxidant solution is prepared by adding the oxidant to 10% by weight of water and mixing well.

[0061] Add the reducing agent to 10% of the weight of water and mix well to prepare a reducing agent solution;

[0062] After uniformly mixing the hydroxy acrylate monomer, the alkyl acrylate monomer, the alkyl methacrylate monomer, and the modified monomer, an emulsifier and the remaining water are added to prepare a premixed monomer;

[0063] Add the oxidant solution and the reducing agent solution dropwise to the premixed monomer, control the reaction temperature to 80°C, react for 5 hours, then add trimethylolpropane triacrylate and a photoinitiator, mix well, and obtain a water-based acrylate resin;

[0064] S2. Preparation of waterborne polyurethane resin:

[0065] After dehydrating polytetramethylene ether glycol, the temperature was raised to 45°C, and after dissolution, amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate, and catalyst were added, and the temperature was raised to 65°C for reaction for 4 hours. Then, acetone was added, and after dilution, a chain extender was added, and the reaction was continued at 65°C for 1.5 hours. Finally, the acetone was removed by vacuum to obtain a waterborne polyurethane resin.

[0066] S3. Preparation of textile digital inkjet printing resin:

[0067] The water-based acrylic resin and the water-based polyurethane resin are uniformly mixed in a weight ratio of 1:3 to obtain a textile digital inkjet printing resin.

[0068] [Example 2]

[0069] A textile digital inkjet printing resin comprises a water-based acrylate resin and a water-based polyurethane resin, wherein the weight ratio of the water-based acrylate resin to the water-based polyurethane resin is 1:4.

[0070] Wherein, the raw materials for preparing water-based acrylic resin are:

[0071] Hydroxyacrylate monomer: 55kg, hydroxyethyl acrylate is used as the hydroxyacrylate monomer;

[0072] Alkyl acrylate monomer: 20 kg, ethyl acrylate is used as the alkyl acrylate monomer;

[0073] Alkyl methacrylate monomer: 15 kg, methyl methacrylate is used as the alkyl methacrylate monomer;

[0074] Modified monomer: 10 kg, the modified monomer is 4-amino-3-fluoroallyl benzoate;

[0075] Trimethylolpropane triacrylate: 20kg;

[0076] Photoinitiator: 2kg; the photoinitiator is benzoin isopropyl ether;

[0077] Emulsifier: 2kg; the emulsifier is fatty alcohol polyoxyethylene ether AEO-9;

[0078] Oxidant: 1.5 kg; the oxidant is sodium persulfate;

[0079] Reducing agent: 0.75kg; the reducing agent is sodium bisulfite;

[0080] Water: 300kg.

[0081] In addition, the raw materials for preparing waterborne polyurethane resin are:

[0082] Polytetramethylene ether glycol: 50 kg, the molecular weight of polytetramethylene ether glycol is 2000;

[0083] Amino-terminated polyether: 10 kg, the amino-terminated polyether adopts amino-terminated polyether T5000, with an average molecular weight of about 5000;

[0084] Bis-hydroxyl-terminated polydimethylsiloxane: 15 kg, the viscosity of bis-hydroxyl-terminated polydimethylsiloxane is 25 mm 2 / s;

[0085] Aromatic diisocyanate: 25kg, the aromatic diisocyanate is toluene diisocyanate;

[0086] Chain extender: 3kg, the chain extender is 1,4-butanediol;

[0087] Catalyst: 0.2 kg, the catalyst used is dibutyltin dilaurate;

[0088] Acetone: 100kg.

[0089] In this embodiment, the preparation method of textile digital inkjet printing resin includes the following steps:

[0090] S1. Preparation of water-based acrylic resin:

[0091] The oxidant solution is prepared by adding the oxidant to 15% of the weight of water and mixing well.

[0092] Add a reducing agent to 15% of the weight of water and mix well to prepare a reducing agent solution;

[0093] After uniformly mixing the hydroxy acrylate monomer, the alkyl acrylate monomer, the alkyl methacrylate monomer, and the modified monomer, an emulsifier and the remaining water are added to prepare a premixed monomer;

[0094] Add the oxidant solution and the reducing agent solution dropwise to the premixed monomer, control the reaction temperature to 85°C, react for 4 hours, then add trimethylolpropane triacrylate and a photoinitiator, mix well, and obtain a water-based acrylate resin;

[0095] S2. Preparation of waterborne polyurethane resin:

[0096] After dehydrating polytetramethylene ether glycol, the temperature was raised to 50°C, and after dissolution, amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate, and catalyst were added, and the temperature was raised to 75°C for reaction for 3 hours. Then, acetone was added, and after dilution, a chain extender was added, and the reaction was continued at 75°C for 1 hour. Finally, the acetone was removed by vacuum to obtain a waterborne polyurethane resin.

[0097] S3. Preparation of textile digital inkjet printing resin:

[0098] The water-based acrylic resin and the water-based polyurethane resin are uniformly mixed in a weight ratio of 1:4 to obtain a textile digital inkjet printing resin.

[0099] [Example 3]

[0100] A textile digital inkjet printing resin differs from [Example 1] in that a modified monomer is different. In this embodiment, the modified monomer is a combination of 2-amino-4,4-dimethyl ethyl valerate and 4-amino-3-fluoroallyl benzoate, and the weight ratio of 2-amino-4,4-dimethyl ethyl valerate to 4-amino-3-fluoroallyl benzoate is 1:1.

[0101] [Example 4]

[0102] A textile digital inkjet printing resin differs from [Example 1] in that the modified monomer is different. In this embodiment, the modified monomer is a combination of 2-amino-4-methyl-5-phospho-3-pentenoic acid ethyl ester and 4-amino-3-fluoroallyl benzoate, and the weight ratio of 2-amino-4-methyl-5-phospho-3-pentenoic acid ethyl ester to 4-amino-3-fluoroallyl benzoate is 1:1.

[0103] [Example 5]

[0104] A textile digital inkjet printing resin differs from [Example 1] in that the modified monomer is different. In this embodiment, the modified monomer is a combination of 2-amino-4,4-dimethylethyl valerate, 2-amino-4-methyl-5-phospho-3-pentenoic acid ethyl ester and 4-amino-3-fluoroallyl benzoate, and the weight ratio of 2-amino-4,4-dimethylethyl valerate, 2-amino-4-methyl-5-phospho-3-pentenoic acid ethyl ester and 4-amino-3-fluoroallyl benzoate is 1:2:7.

[0105] [Example 6]

[0106] A textile digital inkjet printing resin differs from [Example 5] in that: in the modified monomer, the weight ratio of 2-amino-4,4-dimethylethyl valerate, 2-amino-4-methyl-5-phospho-3-pentenoate, and 4-amino-3-fluoroallyl benzoate is different. In this embodiment, the weight ratio of 2-amino-4,4-dimethylethyl valerate, 2-amino-4-methyl-5-phospho-3-pentenoate, and 4-amino-3-fluoroallyl benzoate is 2:3.5:4.5.

[0107] Comparative Example

[0108] [Comparative Example 1]

[0109] A textile digital inkjet printing resin, which differs from [Example 1] in that:

[0110] When preparing the waterborne acrylic resin, the modified monomer is specifically replaced by an equal amount of 2-amino-4,4-dimethylethyl valerate.

[0111] [Comparative Example 2]

[0112] A textile digital inkjet printing resin, which differs from [Example 1] in that:

[0113] When preparing the waterborne acrylic resin, the modified monomer is specifically replaced by an equal amount of ethyl 2-amino-4-methyl-5-phospho-3-pentenoate.

[0114] [Comparative Example 3]

[0115] A textile digital inkjet printing resin, which differs from [Example 1] in that: during the preparation of the water-based acrylate resin, the amount of modified monomer used is 35 kg.

[0116] [Comparative Example 4]

[0117] A textile digital inkjet printing resin, which differs from [Example 1] in that the raw material ratio of the waterborne polyurethane resin is different. In this comparative example, the raw materials used for the waterborne polyurethane resin are:

[0118] Polytetramethylene ether glycol: 55 kg, the molecular weight of polytetramethylene ether glycol is 2000;

[0119] Amino-terminated polyether: 10 kg, the amino-terminated polyether adopts amino-terminated polyether T5000, with an average molecular weight of about 5000;

[0120] Bis-hydroxyl-terminated polydimethylsiloxane: 10 kg, the viscosity of bis-hydroxyl-terminated polydimethylsiloxane is 25 mm 2 / s;

[0121] Aromatic diisocyanate: 20kg, the aromatic diisocyanate is toluene diisocyanate;

[0122] Chain extender: 2kg, the chain extender is 1,4-butanediol;

[0123] Catalyst: 0.1 kg, the catalyst used is dibutyltin dilaurate;

[0124] Acetone: 100kg.

[0125] Performance testing

[0126] 50 kg of the textile digital inkjet printing resin in each embodiment and comparative example was stirred with 5 kg of M-type red reactive dye (Reactive Red 261), 0.5 kg of wetting and dispersing agent BYK-9131 and 100 kg of water at a stirring speed of 300 r / min for 1 h to obtain different digital inkjet inks.

[0127] 1. Printed pattern quality: Digital inkjet inks stored for 90 and 360 days were used to print patterns on cotton fabric using a digital inkjet printer. After curing in a curing system, the resulting digitally printed patterns were recorded for defects such as uneven depth, incomplete patterns, and nozzle clogging.

[0128] 2. Soap Resistance: Cotton fabric printed with a digital inkjet-printed pattern was soaped 100 times and observed for cracks or partial detachment of the printed pattern. The soaping solution was tested at a concentration of 3 g / L, a temperature of 80°C, a stirring speed of 100 rpm, and a stirring time of 20 minutes per wash. After each wash, the fabric was rinsed and dried before the next wash.

[0129] 3. Flexibility: Cut the cotton fabric printed with the digital inkjet printed pattern into a 500mm*100mm test sample. After the test sample is stretched 150% in the longitudinal direction, the inkjet printed pattern is tested for cracks.

[0130] Table 1

[0131]

[0132]

[0133] Table 2

[0134]

[0135]

[0136] Combining the inkjet inks prepared from the textile digital inkjet printing resins in Comparative Examples 1-4 and Example 1 and the test results in Tables 1-2, it can be seen that the textile digital inkjet printing resin of the present application is capable of forming a continuous and uniform film on the fabric surface by combining a specific aqueous acrylate resin with a specific aqueous polyurethane resin. In addition, the textile digital inkjet printing resin has good compatibility with the M-type reactive dye, and the M-type reactive dye can be directly and evenly dispersed in the textile digital inkjet printing resin to form a stable and evenly dispersed inkjet ink. The inkjet ink has good fineness and fluidity, is not prone to clogging of the print head, and the digital inkjet printed pattern is complete and clear, the color is uniform, and the inkjet printing quality is good.

[0137] Combining Example 1 with Examples 3-6 and the test results in Table 1-2, it can be seen that the modified monomer of the textile digital inkjet printing resin adopts a composition of 2-amino-4,4-dimethyl ethyl pentanoate, 2-amino-4-methyl-5-phospho-3-pentenoate and 4-amino-3-fluoroallyl benzoate in a weight ratio of 2: (3-4): (4-5), which is beneficial to further improve the dispersion stability of the M-type reactive dye. Even if stored for a long time, the problem of aggregation of the M-type reactive dye is not easy to occur, which is conducive to obtaining a clear, complete and uniformly colored printed pattern.

[0138] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A textile digital inkjet printing resin, characterized in that: The invention comprises a water-based acrylic resin and a water-based polyurethane resin, wherein the weight ratio of the water-based acrylic resin to the water-based polyurethane resin is 1:(3-4); The water-based acrylic resin is prepared from a hydroxy acrylate monomer, an alkyl acrylate monomer, an alkyl methacrylate monomer, a modified monomer, trimethylolpropane triacrylate, a photoinitiator, an emulsifier, an oxidant, a reducing agent, and water in a weight ratio of (45-55): (20-30): (10-15): (10-15): (15-20): (1.5-2): (1-2): (1-1.5): (0.5-0.75): 300, wherein the modified monomer is a composition of 2-amino-4,4-dimethyl ethyl valerate, 2-amino-4-methyl-5-phospho-3-pentenoic acid ethyl ester, and 4-amino-3-fluoroallyl benzoate, and the weight ratio of the 2-amino-4,4-dimethyl ethyl valerate, 2-amino-4-methyl-5-phospho-3-pentenoic acid ethyl ester, and 4-amino-3-fluoroallyl benzoate is 2: (3-4): (4-5); The waterborne polyurethane resin is prepared from polytetramethylene ether diol, amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate, chain extender, catalyst and acetone in a weight ratio of (40-50): (10-15): (15-20): (20-25): (2-3): (0.1-0.2):

100.

2. A textile digital inkjet printing resin according to claim 1, characterized in that: The hydroxy acrylate monomer is at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, and hydroxybutyl methacrylate; the alkyl acrylate monomer is at least one of methyl acrylate, ethyl acrylate, and butyl acrylate; and the alkyl methacrylate monomer is at least one of methyl methacrylate, ethyl methacrylate, and butyl methacrylate.

3. A textile digital inkjet printing resin according to claim 1, characterized in that: The photoinitiator is at least one of benzoin isopropyl ether, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, and bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide.

4. A textile digital inkjet printing resin according to claim 1, characterized in that: The emulsifier is at least one of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether.

5. The textile digital inkjet printing resin according to claim 1, characterized in that: The oxidizing agent is at least one of sodium persulfate, potassium persulfate, and ammonium persulfate, and the reducing agent is at least one of sodium bisulfite, sodium sulfite, and ascorbic acid.

6. A textile digital inkjet printing resin according to any one of claims 1 to 5, characterized in that: The molecular weight of the polytetramethylene ether glycol is 1500-2000, the average molecular weight of the amino-terminated polyether is 4500-5500, and the viscosity of the bishydroxy-terminated polydimethylsiloxane is 25-35 mm2 / s.

7. A textile digital inkjet printing resin according to any one of claims 1 to 5, characterized in that: The aromatic diisocyanate is at least one of toluene diisocyanate and diphenylmethane diisocyanate.

8. A textile digital inkjet printing resin according to any one of claims 1 to 5, characterized in that: The chain extender is at least one of a small molecule diamine and a small molecule diol.

9. A method for preparing a textile digital inkjet printing resin according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Preparation of water-based acrylic resin: Add the oxidant to 10-15% by weight of water and mix well to prepare an oxidant solution; Add the reducing agent to 10-15% by weight of water and mix well to prepare a reducing agent solution; After uniformly mixing the hydroxy acrylate monomer, the alkyl acrylate monomer, the alkyl methacrylate monomer, and the modified monomer, an emulsifier and the remaining water are added to prepare a premixed monomer; Add the oxidant solution and the reducing agent solution dropwise to the premixed monomer, control the reaction temperature to 80-85° C., react for 4-5 hours, then add trimethylolpropane triacrylate and a photoinitiator, mix well, and obtain a water-based acrylate resin; S2. Preparation of waterborne polyurethane resin: Dehydrate polytetramethylene ether glycol and heat it to 45-50°C. After dissolving, add amino-terminated polyether, dihydroxy-terminated polydimethylsiloxane, aromatic diisocyanate and catalyst, heat it to 65-75°C and react for 3-4 hours, then add acetone, dilute it, add chain extender, continue to react at 65-75°C for 1-1.5 hours, and finally remove acetone by vacuum to obtain waterborne polyurethane resin; S3. Preparation of textile digital inkjet printing resin: The water-based acrylate resin and the water-based polyurethane resin are uniformly mixed according to a proportion to obtain a textile digital inkjet printing resin.

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