Glue for flocking and preparation method thereof

Abstract

The present invention discloses a kind of glue for flocking and its preparation method, and relates to the field of adhesives. A kind of glue for flocking is prepared by the following raw materials including parts by weight: 45-65 parts of soft monomers; 6-15 parts of hard monomers; 1.5-3 parts of eleostearic acid; 1-4 parts of cross-linking monomers; 2-4 parts of glycidyl methacrylate; 1-3 parts of methacryloyloxyethyl phosphate; 0.5-2 parts of emulsifiers; 0.5-1 parts of initiators; 0.05-0.2 parts of regulators; 65-120 parts of deionized water; wherein, the cross-linking monomers are selected from one or more of ethylene glycol dimethacrylate, diacetone acrylamide / adipic acid dihydrazide, and the weight ratio of the diacetone acrylamide and the adipic acid dihydrazide is (1.8-2.1): (0.8-1.3). The present application has the effect of taking into account both the flocking fastness and the feel of the flocking product.

Description

Technical Field

[0001] The invention relates to the field of adhesives, in particular to a glue used for flocking and a preparation method thereof. Background Art

[0002] Electrostatic flocking is a surface decoration method that polarizes fiber hair through an electrostatic field. The polarized hair stands upright on the surface of the glue-coated substrate along the electric lines and is fixed to the surface of the substrate after drying. Electrostatic flocking uses the natural characteristics of like charges repelling and opposite charges attracting to make the hair negatively charged. The hair is attracted by the plant body with different potential and rises vertically to the surface of the plant body. The plant body is coated with glue, so the hair is stuck to the surface of the plant body. Electrostatic flocking is widely used in many industries such as clothing, textiles, cycling, packaging, instruments, etc.

[0003] Glue plays a key role in the quality of flocking products, affecting the appearance, fastness, feel, air permeability, environmental performance, etc. At present, the commonly used flocking glue is acrylic emulsion, which has the advantages of low price, simple preparation, easy use, and aging resistance. It is the most popular and accounts for more than 90% of the glue used for flocking.

[0004] When using traditional acrylic emulsion, in order to ensure the adhesion between the plant body and the fluff, the ratio of soft and hard monomers in the glue, the amount of emulsifier, etc. will be adjusted, which often leads to a decrease in the feel of the flocking product. Therefore, traditional electrostatic flocking glue cannot take into account both the flocking fastness and the feel of the flocking product. Summary of the invention

[0005] In order to take into account both the flocking fastness and the feel of the flocked product, the present application provides a glue for flocking and a preparation method thereof.

[0006] In the first aspect, the present application provides a glue for flocking using the following technical solution:

[0007] A glue for flocking is prepared from the following raw materials in parts by weight:

[0008] Soft monomer 45-65 parts;

[0009] 6-15 parts of hard monomer;

[0010] 1.5-3 parts of eleostearic acid;

[0011] 1-4 parts of cross-linking monomer;

[0012] 2-4 parts of glycidyl methacrylate;

[0013] 1-3 parts of methacryloyloxyethyl phosphate;

[0014] Emulsifier 0.5-2 parts;

[0015] Initiator 0.5-1 part;

[0016] Regulator 0.05-0.2 parts;

[0017] 65-120 parts of deionized water;

[0018] The cross-linking monomer is selected from one or more of ethylene glycol dimethacrylate, diacetone acrylamide / adipic acid dihydrazide, and the weight ratio of the diacetone acrylamide to the adipic acid dihydrazide is (1.8-2.1):(0.8-1.3).

[0019] By adopting the above technical scheme, the soft monomer can increase the softness of the flocking product and improve the adhesion of the fluff to the plant body; the hard monomer can enhance the cohesion of the glue polymer and improve the wear resistance and fastness of the flocking product; tung oil acid, as a long-chain unsaturated monomer, has the characteristics of heat resistance and good adhesion, and the hydrophilic carboxyl group can improve the wettability of the glue to the plant body; the cross-linking monomer promotes the cross-linking of the glue polymer, which is beneficial to the stability of the acrylic emulsion and can enhance the elasticity and friction resistance of the flocking product. In this application, ethylene glycol dimethacrylate or diacetone acrylamide / adipic acid dihydrazide is selected as the cross-linking monomer, and no formaldehyde is generated during use, which is more environmentally friendly.

[0020] This application uses glycidyl methacrylate and methacryloyloxyethyl phosphate to synergistically modify the acrylic emulsion. Glycidyl methacrylate contains unsaturated groups and epoxy groups, and can undergo cross-linking reactions with carboxyl groups, amino groups, etc., which is beneficial to increasing the degree of cross-linking of the polymer, thereby improving the bonding performance of the glue. At the same time, the polar groups are increased, and the friction resistance and water resistance are improved; methacryloyloxyethyl phosphate is a phosphorus-containing monomer, which can enhance the flame retardant properties of flocking products.

[0021] By combining appropriate proportions of soft monomers, hard monomers, eleostearic acid, cross-linking monomers, glycidyl methacrylate and methacryloyloxyethyl phosphate, the flocking product has both good hand feel and flocking fastness, and has good elasticity and friction resistance.

[0022] Furthermore, the soft monomer is selected from one or more of butyl acrylate, isooctyl acrylate, ethyl acrylate, and 2-ethylhexyl acrylate.

[0023] Furthermore, the soft monomer is a mixture of butyl acrylate, isooctyl acrylate and 2-ethylhexyl acrylate, and the weight ratio of the butyl acrylate, the isooctyl acrylate and the 2-ethylhexyl acrylate is (1.2-1.4):(1.1-1.3):(0.7-0.8).

[0024] By adopting the above technical solution and selecting a variety of soft monomers in specific proportions for compounding, the flocking product has a soft feel and better adhesion.

[0025] Furthermore, the hard monomer is a mixture of methyl methacrylate and styrene, wherein the weight ratio of the methyl methacrylate to the styrene is (1.2-1.5):(0.5-0.8).

[0026] By adopting the above technical scheme, styrene and methyl methacrylate are selected as hard monomers. Styrene has a rigid benzene ring. The introduction of styrene chain segments into the polymer is beneficial to improving the weather resistance and heat resistance of the glue.

[0027] Furthermore, the emulsifier is selected from one or more of sodium lauryl sulfate, peregrin O-25, COPS-1 emulsifier, NRS-10 emulsifier, and AE-3218 emulsifier.

[0028] By adopting the above technical solution, a nonionic emulsifier or an anionic emulsifier is selected to stabilize the acrylic ester emulsion before and after polymerization.

[0029] Furthermore, the emulsifier is a mixture of Peregal O-25 and COPS-1 emulsifier, and the weight ratio of the Peregal O-25 to the COPS-1 emulsifier is 1:(0.6-0.9).

[0030] By adopting the above technical solution and compounding nonionic emulsifier and anionic emulsifier, COPS-1 emulsifier can be connected to the polymer surface in a covalent bond manner, which is beneficial to improve the comprehensive performance of the emulsion and make the emulsion more stable and weather-resistant.

[0031] Furthermore, the initiator is selected from one or more of potassium persulfate, sodium persulfate, ammonium persulfate, and sodium bisulfite.

[0032] By adopting the above technical solution, the initiator is used to initiate the polymerization reaction between monomers.

[0033] Furthermore, the regulator is selected from one or more of ammonia water and sodium bicarbonate.

[0034] By adopting the above technical solution, the regulator is used to adjust the pH of the acrylic ester emulsion and enhance the storage stability.

[0035] In a second aspect, the present application provides a method for preparing glue for flocking, comprising the following steps:

[0036] Add an emulsifier and an appropriate amount of deionized water into a pre-emulsification kettle, stir and dissolve, mix the soft monomer, hard monomer, eleostearic acid, cross-linking monomer, glycidyl methacrylate and methacryloyloxyethyl phosphate evenly, add to the pre-emulsification kettle and stir for 1-1.5 hours to obtain a pre-emulsified liquid;

[0037] Take 3%-10% of the pre-emulsion and put it into the reactor, heat it to 45-50°C, add appropriate amount of initiator and deionized water, continue to heat it to 68-75°C, initiate polymerization to form seed emulsion;

[0038] Add the remaining pre-emulsion and initiator to the seed emulsion, control the adding time to 2-3h, raise the temperature to 85-90℃, mature for 1h, cool to 40-45℃, add a regulator to adjust the pH to 7-8, stir evenly to obtain the glue for flocking.

[0039] By adopting the technical scheme, the glue is prepared by using the seed emulsion polymerization method, and the preparation method is simple and easy to use.

[0040] Furthermore, the appearance of the glue is white emulsion, and the solid content is 43%-46%.

[0041] By adopting the above technical solution, the appearance and solid content of the glue are restricted, so that the glue can be easily coated on the plant body to form a film.

[0042] In summary, this application has the following technical effects:

[0043] By adopting the above technical scheme, the soft monomer can increase the softness of the flocking product and improve the adhesion of the fluff to the plant body; the hard monomer can enhance the cohesion of the glue polymer and improve the wear resistance and fastness of the flocking product; tung oil acid, as a long-chain unsaturated monomer, has the characteristics of heat resistance and good adhesion, and the hydrophilic carboxyl group can improve the wettability of the glue to the plant body; the cross-linking monomer promotes the cross-linking of the glue polymer, which is beneficial to the stability of the acrylic emulsion and can enhance the elasticity and friction resistance of the flocking product. In this application, ethylene glycol dimethacrylate or diacetone acrylamide / adipic acid dihydrazide is selected as the cross-linking monomer, and no formaldehyde is generated during use, which is more environmentally friendly.

[0044] This application uses glycidyl methacrylate and methacryloyloxyethyl phosphate to synergistically modify the acrylic emulsion. Glycidyl methacrylate contains unsaturated groups and epoxy groups, and can undergo cross-linking reactions with carboxyl groups, amino groups, etc., which is beneficial to increasing the degree of cross-linking of the polymer, thereby improving the bonding performance of the glue. At the same time, the polar groups are increased, and the friction resistance and water resistance are improved; methacryloyloxyethyl phosphate is a phosphorus-containing monomer, which can enhance the flame retardant properties of flocking products.

[0045] By combining appropriate proportions of soft monomers, hard monomers, eleostearic acid, cross-linking monomers, glycidyl methacrylate and methacryloyloxyethyl phosphate, the flocking product has both good hand feel and flocking fastness, and has good elasticity and friction resistance. DETAILED DESCRIPTION

[0046] Example

[0047] Example 1

[0048] A glue for flocking, comprising the following raw materials in parts by weight:

[0049] 45g of soft monomer, in this application, 45g of butyl acrylate is used as the soft monomer;

[0050] 6g of hard monomer, in this application, 6g of methyl methacrylate is used as the hard monomer;

[0051] Eleurotic acid 1.5g;

[0052] 1g of cross-linking monomer. In this application, the cross-linking monomer is 1g of ethylene glycol dimethacrylate;

[0053] Glycidyl methacrylate 2g;

[0054] Methacryloyloxyethyl phosphate 1g;

[0055] Emulsifier 0.5g, in this application, the emulsifier is selected from 0.3g of Peregal O-25 and 0.2g of sodium lauryl sulfate;

[0056] Initiator 0.5g, in this application, the initiator is 0.5g potassium persulfate;

[0057] 0.05g of ammonia water is used as the regulator;

[0058] 65g of deionized water.

[0059] A method for preparing glue for flocking, comprising the following steps:

[0060] Add emulsifier and 40g deionized water into the pre-emulsification kettle, stir and dissolve, mix soft monomer, hard monomer, acrylic acid, cross-linking monomer, glycidyl methacrylate and methacryloyloxyethyl phosphate evenly, add into the pre-emulsification kettle and stir for 1h to obtain pre-emulsion;

[0061] 3% of the pre-emulsion was put into the reactor, the temperature was raised to 45°C, 0.3g of initiator and 25g of deionized water were added, and the temperature was continued to rise to 68°C to initiate polymerization to form a seed emulsion;

[0062] Add the remaining pre-emulsion and 0.2 g initiator to the seed emulsion, control the addition time to 2 h, raise the temperature to 85 ° C, mature for 1 h, cool to 40 ° C, add a regulator to adjust the pH to 7, and stir evenly to obtain the glue for flocking.

[0063] Example 2

[0064] A glue for flocking, comprising the following raw materials in parts by weight:

[0065] 65g of soft monomer, in this application, 35g of ethyl acrylate and 30g of sec-octyl acrylate are used as soft monomer;

[0066] 15g of hard monomer, in this application, 15g of methyl methacrylate is used as the hard monomer;

[0067] Eleurotic acid 3g;

[0068] 4g of cross-linking monomer. In this application, 4g of ethylene glycol dimethacrylate is used as the cross-linking monomer;

[0069] Glycidyl methacrylate 4g;

[0070] Methacryloyloxyethyl phosphate 3g;

[0071] Emulsifier 2g, in this application, the emulsifier is selected from 1g NRS-10 emulsifier and 1g sodium lauryl sulfate;

[0072] Initiator 1g, in this application, the initiator is 1g ammonium persulfate;

[0073] 0.2g of regulator, in this application, 0.2g of ammonia water is used as the regulator;

[0074] 120g deionized water.

[0075] A method for preparing glue for flocking, comprising the following steps:

[0076] Add emulsifier and 90g deionized water into the pre-emulsification kettle, stir and dissolve, mix soft monomer, hard monomer, acrylic acid, cross-linking monomer, glycidyl methacrylate and methacryloyloxyethyl phosphate evenly, add into the pre-emulsification kettle and stir for 1.5h to obtain pre-emulsion;

[0077] 10% of the pre-emulsion was put into the reactor, the temperature was raised to 50°C, 0.7g of initiator and 30g of deionized water were added, and the temperature was continued to rise to 75°C to initiate polymerization to form a seed emulsion;

[0078] Add the remaining pre-emulsion and 0.3 g initiator to the seed emulsion, control the addition time to 3 h, raise the temperature to 90 ° C, mature for 1 h, cool to 45 ° C, add a regulator to adjust the pH to 8, and stir evenly to obtain the glue for flocking.

[0079] Example 3

[0080] A glue for flocking, comprising the following raw materials in parts by weight:

[0081] 58g of soft monomer, in this application, the soft monomer is selected from 30g of 2-ethylhexyl acrylate and 28g of sec-octyl acrylate;

[0082] 11 g of hard monomer, in this application, 11 g of styrene is used as the hard monomer;

[0083] Eleurotic acid 2g;

[0084] 2g of cross-linking monomer, in this application, the cross-linking monomer is selected from 1.2g of diacetone acrylamide and 0.8g of oxalic acid dihydrazide;

[0085] Glycidyl methacrylate 3g;

[0086] Methacryloyloxyethyl phosphate 2g;

[0087] Emulsifier 1g, in this application, the emulsifier is selected from 0.6g NRS-10 emulsifier and 0.4g COPS-1 emulsifier;

[0088] Initiator 0.8g, in this application, the initiator is 0.8g sodium bisulfite;

[0089] 0.1 g of a regulator, in this application, 0.1 g of sodium bicarbonate is used as the regulator;

[0090] 95g deionized water.

[0091] A method for preparing glue for flocking, comprising the following steps:

[0092] Add the emulsifier and 72g of deionized water into the pre-emulsification kettle, stir and dissolve, mix the soft monomer, hard monomer, acrylic acid, cross-linking monomer, glycidyl methacrylate and methacryloyloxyethyl phosphate evenly, add to the pre-emulsification kettle and stir for 1.5h to obtain a pre-emulsion;

[0093] 7% of the pre-emulsion was put into the reactor, the temperature was raised to 48°C, 0.5g of initiator and 23g of deionized water were added, and the temperature was continued to rise to 72°C to initiate polymerization to form a seed emulsion;

[0094] Add the remaining pre-emulsion and 0.3 g initiator to the seed emulsion, control the addition time to 2.5 h, raise the temperature to 88 ° C, mature for 1 h, cool to 42 ° C, add a regulator to adjust the pH to 8, and stir evenly to obtain the glue for flocking.

[0095] Example 4

[0096] The difference between this embodiment and embodiment 1 is that the selection of the soft monomer in the glue raw material is different.

[0097] In this embodiment, the soft monomer is a mixture of butyl acrylate, isooctyl acrylate and 2-ethylhexyl acrylate, specifically 18g of butyl acrylate, 16.5g of isooctyl acrylate and 10.5g of 2-ethylhexyl acrylate.

[0098] Example 5

[0099] The difference between this embodiment and embodiment 1 is that the selection of the soft monomer in the glue raw material is different.

[0100] In this embodiment, the soft monomer is a mixture of butyl acrylate, isooctyl acrylate and 2-ethylhexyl acrylate, specifically 18.3 g of butyl acrylate, 16.9 g of isooctyl acrylate and 9.8 g of 2-ethylhexyl acrylate.

[0101] Example 6

[0102] The difference between this embodiment and embodiment 1 is that the selection of the hard monomer in the glue raw material is different.

[0103] In this embodiment, the hard monomer is a mixture of methyl methacrylate and styrene, specifically 3.6 g of methyl methacrylate and 2.4 g of styrene.

[0104] Example 7

[0105] The difference between this embodiment and embodiment 1 is that the selection of the hard monomer in the glue raw material is different.

[0106] In this embodiment, the hard monomer is a mixture of methyl methacrylate and styrene, specifically 4.5 g of methyl methacrylate and 1.5 g of styrene.

[0107] Example 8

[0108] The difference between this embodiment and embodiment 1 is that the emulsifier in the glue raw material is different.

[0109] In the examples of the present application, the emulsifier is a mixture of Peregal O-25 and COPS-1 emulsifier, specifically 0.31 g of Peregal O-25 and 0.19 g of COPS-1 emulsifier.

[0110] Example 9

[0111] The difference between this embodiment and embodiment 1 is that the emulsifier in the glue raw material is different.

[0112] In the examples of the present application, the emulsifier is a mixture of Peregal O-25 and COPS-1 emulsifier, specifically 0.26 g of Peregal O-25 and 0.24 g of COPS-1 emulsifier.

[0113] Example 10

[0114] The difference between this embodiment and embodiment 1 is that the selection of soft monomer, hard monomer and emulsifier in the glue raw material is different.

[0115] In the embodiment of the present application, the soft monomer is a mixture of butyl acrylate, isooctyl acrylate and 2-ethylhexyl acrylate, specifically 18.3g of butyl acrylate, 16.9g of isooctyl acrylate and 9.8g of 2-ethylhexyl acrylate; the hard monomer is a mixture of methyl methacrylate and styrene, specifically 3.6g of methyl methacrylate and 2.4g of styrene; the emulsifier is a mixture of Peregal O-25 and COPS-1 emulsifier, specifically 0.26g of Peregal O-25 and 0.24g of COPS-1 emulsifier.

[0116] Comparative Example

[0117] Comparative Example 1

[0118] The difference between this comparative example and Example 1 is that this comparative example uses a commercially available electrostatic flocking adhesive, TUBICOLL 1510A CHT flocking adhesive from Shanghai Wandao Chemical Co., Ltd.

[0119] Comparative Example 2

[0120] The difference between this comparative example and Example 1 is that glycidyl methacrylate and methacryloyloxyethyl phosphate are not added to the raw materials of the glue used for flocking in this comparative example.

[0121] Comparative Example 3

[0122] The difference between this comparative example and Example 1 is that an equal amount of acrylic acid is used in the raw material of the glue used for flocking in this comparative example instead of eleostearic acid.

[0123] Performance Testing

[0124] The glues prepared in Examples 1-10 and Comparative Examples 1-3 were respectively prepared into adhesives according to a weight ratio of glue: isocyanate curing agent: thickener = 100: 1.5: 2, and the adhesives were evenly coated on the surface of the black spunlace fabric using a coating machine, with a coating amount of 250-300 g / m 2 Then fix the spunlace cloth coated with glue under the nozzle of the electrostatic flocking prototype machine, and carry out flocking to obtain a flocking product.

[0125] Application of electrostatic flocking:

[0126] Base material: black spunlace fabric; Fluff: gray nylon short hair, 1.2D×0.6mm;

[0127] Flocking treatment: The ascending flocking method is adopted, the pole distance is 10cm, the voltage is 40kV, the flocking time is 5s, the pre-drying temperature is 60℃, 5min, and the drying temperature is 140℃, 3min.

[0128] The flocking products obtained in Examples 1-10 and Comparative Examples 1-3 were subjected to the following tests:

[0129] 1. Flocking fastness: Test according to the method in GB / T 13775-1992 "Test method for abrasion resistance of cotton, linen and silk woven fabrics", use a fabric abrasion tester to test, record the average number of abrasion times, and record the results in Table 1.

[0130] 2. Softness: Test according to GB / T 18318.1-2009 “Determination of flexural properties of textiles Part 1: Inclined plane method”, record the average bending length of the sample, and record the results in Table 1.

[0131] 3. Hand feel: 5-10 people in a group touch the finished fabric and rate it. The hand feel is divided into 5 levels, with the unfinished blank sample being rated as level 1 and the best feeling being rated as level 5. Determine the hand feel level and record the results in Table 1.

[0132] 4. Peel strength: Test according to the method in GB / T 2791-1995 "Adhesive T peel strength test method flexible material to flexible material", record the peel strength value, and record the results in Table 1.

[0133] Table 1

[0134] Sample Flocking fastness / times Bending length / cm Feel / Grade Peel strength / (kN / m) Example 1 9160 2.12 3-4 1.53 Example 2 9190 2.14 3-4 1.56 Example 3 9170 2.10 3-4 1.55 Example 4 9290 1.70 4-5 1.65 Example 5 9300 1.68 4-5 1.65 Example 6 9470 1.95 3-4 1.72 Example 7 9480 1.97 3-4 1.72 Example 8 9230 2.00 4 1.60 Example 9 9240 2.02 4 1.61 Example 10 10160 1.57 5 1.81 Comparative Example 1 9020 2.09 3 1.54 Comparative Example 2 6940 2.35 3 1.38 Comparative Example 3 8210 2.20 3 1.45

[0135] Data Analysis:

[0136] The glue prepared in Examples 1-3 of the present application is used for flocking products prepared in electrostatic flocking, and the flocking fastness can reach more than 9100 times, the bending length is about 2.1 cm, the hand feel is soft, and the peel strength reaches about 1.55 kN / m. Compared with the commercially available electrostatic flocking adhesive in Comparative Example 1, the glue of the present application can achieve the performance of the commercially available adhesive, taking into account the excellent flocking fastness, softness and hand feel. At the same time, the glue has good storage stability and good weather resistance, and the introduction of methacryloyloxyethyl phosphate has a flame retardant effect.

[0137] Embodiments 4-5 define the soft monomers in the glue raw materials. When the soft monomers form the acrylic emulsion, they will form a macromolecular chain structure. The longer side chains reduce the force between the main chains, which enhances the flexibility. Therefore, by compounding different soft monomers, the side chain length of the macromolecular chain formed during the polymerization process can be adjusted, thereby enhancing the flexibility of the acrylic emulsion film and improving the softness and feel of the flocking product. In addition, different soft monomers are selected to enhance the wettability and spreading coefficient of the emulsion on the plant body, which is conducive to the attachment and bonding of the villi on the plant body, so that the bonding strength is improved.

[0138] Examples 6-7 limit the hard monomers in the glue raw materials, introduce rigid groups into the benzene ring by increasing styrene to form rigid segments, enhance the interaction with the plant body, increase the steric hindrance by polar groups, improve the cohesive force of the acrylic emulsion, and thus improve the wear resistance and bonding strength.

[0139] Examples 8-9 limit the emulsifier in the glue raw material. The selection of the emulsifier will affect the coagulation rate and stability of the acrylic emulsion. The emulsification effect is improved by using a specific combination of emulsifiers, and the dispersion stability of the system is improved, so that the coagulation rate of the acrylic emulsion is moderate, the storage stability is good and it has good bonding properties. The overall performance of the flocking product after the glue is applied is improved.

[0140] In Comparative Example 2-3, relative to the glue of Example 1, no glycidyl methacrylate and methacryloyloxyethyl phosphate were added to the raw materials of the glue, and acrylic acid was used instead of eleostearic acid. The performance of the glue was lowered compared with that of Example 1, which illustrates the synergistic effect of modifying the acrylic emulsion using eleostearic acid, glycidyl methacrylate and methacryloyloxyethyl phosphate.

[0141] 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 such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A glue for flocking, characterized in that: It is prepared from the following raw materials in parts by weight: Soft monomer 45-65 parts; 6-15 parts of hard monomer; 1.5-3 parts of eleostearic acid; 1-4 parts of cross-linking monomer; 2-4 parts of glycidyl methacrylate; 1-3 parts of methacryloyloxyethyl phosphate; Emulsifier 0.5-2 parts; Initiator 0.5-1 part; Regulator 0.05-0.2 parts; 65-120 parts of deionized water; Wherein, the cross-linking monomer is selected from one or more of ethylene glycol dimethacrylate, diacetone acrylamide / adipic acid dihydrazide, and the weight ratio of the diacetone acrylamide to the adipic acid dihydrazide is (1.8-2.1):(0.8-1.3); The hard monomer is a mixture of methyl methacrylate and styrene, wherein the weight ratio of the methyl methacrylate to the styrene is (1.2-1.5):(0.5-0.8).

2. The glue for flocking according to claim 1, characterized in that: The soft monomer is selected from one or more of butyl acrylate, isooctyl acrylate, ethyl acrylate, and 2-ethylhexyl acrylate.

3. The glue for flocking according to claim 2, characterized in that: The soft monomer is a mixture of butyl acrylate, isooctyl acrylate and 2-ethylhexyl acrylate, and the weight ratio of the butyl acrylate, the isooctyl acrylate and the 2-ethylhexyl acrylate is (1.2-1.4):(1.1-1.3):(0.7-0.8).

4. The glue for flocking according to claim 1, characterized in that: The emulsifier is selected from two or more of sodium lauryl sulfate, peregrin O-25, COPS-1 emulsifier, NRS-10 emulsifier, and AE-3218 emulsifier.

5. The glue for flocking according to claim 4, characterized in that: The emulsifier is a mixture of Peregal O-25 and COPS-1 emulsifier, and the weight ratio of the Peregal O-25 to the COPS-1 emulsifier is 1:(0.6-0.9).

6. The glue for flocking according to claim 1, characterized in that: The initiator is selected from one or more of potassium persulfate, sodium persulfate, ammonium persulfate, and sodium bisulfite.

7. The glue for flocking according to claim 1, characterized in that: The regulator is selected from one or more of ammonia water and sodium bicarbonate.

8. The method for preparing the glue for flocking according to any one of claims 1 to 7, characterized in that: The steps include: Add an emulsifier and an appropriate amount of deionized water into a pre-emulsification kettle, stir and dissolve, mix the soft monomer, hard monomer, eleostearic acid, cross-linking monomer, glycidyl methacrylate and methacryloyloxyethyl phosphate evenly, add to the pre-emulsification kettle and stir for 1-1.5 hours to obtain a pre-emulsified liquid; Take 3%-10% of the pre-emulsion and put it into the reactor, heat it to 45-50℃, add appropriate amount of initiator and deionized water, continue to heat it to 68-75℃, initiate polymerization to form seed emulsion; Add the remaining pre-emulsion and initiator to the seed emulsion, control the addition time to 2-3h, heat to 85-90℃, mature for 1h, cool to 40-45℃, add a regulator to adjust the pH to 7-8, stir evenly to obtain glue for flocking.

9. The method for preparing glue for flocking according to claim 8, characterized in that: The glue has the appearance of a white emulsion with a solid content of 43%-46%.