Acid-etching-resistant temporary protective glue for UTG glass laser cutting and preparation method of acid-etching-resistant temporary protective glue

Abstract

The invention discloses acid-etching-resistant temporary protective glue for UTG glass laser cutting and a preparation method of the acid-etching-resistant temporary protective glue. The acid-etching-resistant temporary protective glue comprises the following raw materials: a urethane acrylate prepolymer, an epoxy acrylate prepolymer, a diluent, a photopolymerization initiator and a coupling agent, the acid etching resistant temporary protective glue comprises the following components in parts by weight: 25-50 parts of polyurethane acrylate prepolymer; 15 to 40 parts of an epoxy acrylate prepolymer; 15 to 35 parts of a diluent; 4 to 8 parts of a photopolymerization initiator; and 1-3 parts of a coupling agent. The acid-etching-resistant temporary protection glue can resist strong acid for a long time, has high transmittance, is easy for laser cutting, has relatively strong bonding capability and is short in curing time, so that the acid-etching-resistant temporary protection glue protects UTG, increases the product yield and improves the processing efficiency while ensuring the laser cutting effect.

Description

Technical Field

[0001] The invention relates to the technical field of glass etching, and in particular to an acid-resistant etching resistant temporary protective glue for UTG glass laser cutting and a preparation method thereof. Background Art

[0002] Ultra-thin flexible glass, referred to as UTG, generally refers to sodium aluminum silicate glass with a thickness of 0.02mm-0.1mm. It is mainly used in the flexible display industry, such as making glass cover plates with ultra-thin glass. However, in the glass processing process, larger ultra-thin glass must be cut into smaller ultra-thin glass of different specifications. There are three most common ways to cut UTG: cutting with a lamination solution, cutting with a knife wheel, and laser cutting.

[0003] Among them, the first stacking scheme cutting blade scheme uses a UV glue or beeswax to stack UTG together, and the stacking scheme uses a cutting blade with a mesh size of 100 or above to cut. When the stacking cutting blade is used for cutting, the product is easy to fall off during the processing, and the product has large edge collapse. The second knife wheel cutting scheme can only cut glass with a thickness of ≥0.08mm when cutting UTG. When cutting glass with a thickness of ≤0.07mm, the product is easy to break or have large edge collapse due to the insufficient accuracy of the equipment, so multiple pieces of UTG need to be stacked up, which makes the subsequent operation difficult and the yield is low. Although the third laser cutting has relatively small edge collapse, the product is easy to break during the process of transferring the product to the workbench, and the laser will burn and deform the edge of the product, which will greatly reduce the strength of the glass and make the glass easy to break.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to provide an acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting and a preparation method thereof to solve the shortcomings of the prior art. Summary of the invention

[0005] One of the purposes of the present invention is to avoid the shortcomings of the prior art and provide an acid-resistant temporary protective glue for UTG glass laser cutting. The acid-resistant temporary protective glue for UTG glass laser cutting has high transmittance, is easy to laser cut, and can also protect UTG, thereby increasing product yield and improving processing efficiency.

[0006] The above-mentioned purpose of the present invention is achieved by the following technical measures:

[0007] Provided is an acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting. The raw materials of the acid-resistant and etch-resistant temporary protective glue contain: polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent, photopolymerization initiator and coupling agent.

[0008] In the acid-resistant etching temporary protective glue, by weight,

[0009] Polyurethane acrylate prepolymer: 25 to 50 parts;

[0010] Epoxy acrylate prepolymer: 15 to 40 parts;

[0011] Diluent: 15 to 35 parts;

[0012] Photopolymerization initiator: 4 to 8 parts;

[0013] Coupling agent: 1 to 3 parts.

[0014] The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting of the present invention is measured in parts by weight.

[0015] Polyurethane acrylate prepolymer: 35 to 40 parts;

[0016] Epoxy acrylate prepolymer: 20 to 30 parts;

[0017] Diluent: 26 to 34 parts;

[0018] Photopolymerization initiator: 5 to 6 parts;

[0019] Coupling agent: 1 to 3 parts.

[0020] Further, in parts by weight,

[0021] Polyurethane acrylate prepolymer: 40 parts;

[0022] Epoxy acrylate prepolymer: 25 parts;

[0023] Diluent: 26 parts;

[0024] Photopolymerization initiator: 5.5 parts;

[0025] Coupling agent: 2 parts.

[0026] Preferably, the polyurethane acrylate prepolymer is prepared from silicone-modified polyurethane acrylate and a polyurethane acrylate mixture.

[0027] The polyurethane acrylate prepolymer is polyurethane acrylate;

[0028] or

[0029] The polyurethane acrylate prepolymer is silicone-modified polyurethane acrylate and a polyurethane acrylate mixture.

[0030] In the polyurethane acrylate prepolymer, the weight ratio of the silicone-modified polyurethane acrylate to the polyurethane acrylate mixture is 0-0.3:1.

[0031] Preferably, the polyurethane acrylate is polyurethane acrylate model 554 of Double Bond Chemical Co., Ltd., polyurethane acrylate model 6148J-75 of Changxing Chemical Industry China Co., Ltd., or polyurethane acrylate model DR-028FS of Changxing Chemical Industry China Co., Ltd.

[0032] Preferably, the above-mentioned silicone-modified polyurethane acrylate is silicone-modified polyurethane acrylate with model number YC5016 produced by Jining Tangyi Chemical Co., Ltd.

[0033] Preferably, the epoxy acrylate prepolymer is an epoxy acrylate prepolymer model B503 produced by Guangdong Boxing New Material Technology Co., Ltd., an epoxy acrylate prepolymer model 272 produced by Double Bond Chemical Co., Ltd., or an epoxy acrylate prepolymer model 1883 produced by DIC Synthetic Resin (Zhongshan) Co., Ltd.

[0034] Preferably, the photopolymerization initiator is a phosphine oxide or a peroxide.

[0035] Among them, the phosphine oxides are 2,4,6-trimethylbenzoyldiphenylphosphine oxide and ethyl 2,4,6-trimethylbenzoyldiphenylphosphinate;

[0036] Among them, the peroxides are benzoins, benzoin alkyl ethers, aminoacetophenones, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone, and xanthones.

[0037] Preferably, the diluent is acrylamide, N-hydroxymethyl acrylamide, N-butoxymethyl (meth) acrylamide, diacetone acrylamide or ethyl acetoacetate methacrylate.

[0038] Preferably, the coupling agent is an epoxy coupling agent.

[0039] Another object of the present invention is to avoid the shortcomings of the prior art and provide a method for preparing an acid-resistant temporary protective glue for UTG glass laser cutting. The acid-resistant temporary protective glue obtained by the preparation method has high transmittance, is easy to laser cut, and can also protect UTG, thereby increasing product yield and improving processing efficiency.

[0040] The above-mentioned purpose of the present invention is achieved by the following technical measures:

[0041] The present invention provides a method for preparing an acid-resistant etching temporary protective glue for UTG glass laser cutting, which is carried out by the following steps:

[0042] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0043] S2, stirring the mixture of S1, and adding a photopolymerization initiator to obtain the acid-etching resistant temporary protective glue.

[0044] The present invention discloses an acid-resistant temporary protective glue for UTG glass laser cutting and a preparation method thereof, wherein the raw materials of the acid-resistant temporary protective glue contain: polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent, photopolymerization initiator and coupling agent; in the acid-resistant temporary protective glue, by weight, polyurethane acrylate prepolymer: 25 parts to 50 parts; epoxy acrylate prepolymer: 15 parts to 40 parts; diluent: 15 parts to 35 parts; photopolymerization initiator: 4 parts to 8 parts; coupling agent: 1 part to 3 parts. The acid-resistant temporary protective glue of the present invention can withstand strong acid for a long time, has high transmittance, is easy to laser cut, and also has strong bonding ability and short curing time. Therefore, the acid-resistant temporary protective glue protects UTG, increases product yield, and improves processing efficiency while ensuring the laser cutting effect. DETAILED DESCRIPTION

[0045] The technical scheme of the present invention is further described in conjunction with the following examples. The experimental methods in the following examples are conventional methods unless otherwise specified. The raw materials, reagent materials, etc. used in the following examples can be purchased from conventional biochemical reagent stores or pharmaceutical companies unless otherwise specified.

[0046] Example 1

[0047] A temporary acid-etching resistant protective glue for UTG glass laser cutting, wherein the raw materials of the temporary acid-etching resistant protective glue include: polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent, photopolymerization initiator and coupling agent;

[0048] In the acid-resistant etching temporary protective glue, by weight,

[0049] Polyurethane acrylate prepolymer: 25 to 50 parts;

[0050] Epoxy acrylate prepolymer: 15 to 40 parts;

[0051] Diluent: 15 to 35 parts;

[0052] Photopolymerization initiator: 4 to 8 parts;

[0053] Coupling agent: 1 to 3 parts.

[0054] The polyurethane acrylate prepolymer is polyurethane acrylate.

[0055] The polyurethane acrylate prepolymer preferably has strong adhesion and toughness, and the polyurethane acrylate prepolymer preferably has a molecular weight of 8000 to 20000 and has strong adhesion and toughness. After curing, a polymer with high toughness, high adhesion, and high impact corrosion resistance is obtained to improve water resistance, impact resistance and other chemical resistance. The model of the polyurethane acrylate is the polyurethane acrylate model 554 of Double Bond Chemical Co., Ltd., the polyurethane acrylate model 6148J-75 of Changxing Chemical Industry China Co., Ltd., or the polyurethane acrylate model DR-028FS of Changxing Chemical Industry China Co., Ltd.

[0056] The acid value of the epoxy acrylate prepolymer of the present invention is between 140 and 180. If the acid value is lower than 140, the adhesion to the substrate is poor and the acid resistance is poor. If the acid value is higher than 180, the prepolymer is not resistant to cleaning and has good compactness after curing.

[0057] The epoxy acrylate prepolymer is produced by Guangdong Boxing New Material Technology Co., Ltd. with the model number B503, Double Bond Chemical Co., Ltd. with the model number 272, or DIC Synthetic Resin (Zhongshan) Co., Ltd. with the model number 1883, wherein the acid value of the epoxy acrylate prepolymer is 160.

[0058] The diluent of the present invention is an acrylic acid monomer, specifically acrylamide, N-hydroxymethyl acrylamide, N-butoxymethyl (methyl) acrylamide, diacetone acrylamide, ethyl methyl acetoacetate, etc., which have good adhesion and low viscosity and better dilution effect. The viscosity of the diluent of the present invention is generally in the range of 50 to 200 mPa.s.

[0059] The photopolymerization initiator of the present invention is a phosphine oxide or a peroxide; wherein the phosphine oxide is 2,4,6-trimethylbenzoyldiphenylphosphine oxide or ethyl 2,4,6-trimethylbenzoyldiphenylphosphinate; wherein the peroxide is benzoin, benzoin alkyl ether, aminoacetophenone, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone or xanthones. The various peroxides of the present invention can be selected from commercial products, such as IRGACURE184, IRGACURE819, LUCIRIN TPO, etc. manufactured by "BASF JAPAN LTD." or a combination of multiple thereof.

[0060] The coupling agent of the present invention is an epoxy coupling agent. The epoxy coupling agent can increase the adhesion to the substrate and does not affect the storage stability of the glue. The specific models of the epoxy coupling agent are KH560 and Dow Corning 6040.

[0061] The following steps are performed:

[0062] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0063] S2, stirring the mixture of S1, and adding a photopolymerization initiator to obtain the acid-etching resistant temporary protective glue.

[0064] The acid-resistant temporary protective glue can withstand strong acid for a long time, has high transmittance, is easy to laser cut, and also has strong bonding ability and short curing time. Therefore, the acid-resistant temporary protective glue can protect UTG, increase product yield, and improve processing efficiency while ensuring the laser cutting effect.

[0065] Example 2

[0066] A temporary acid-resistant protective glue for UTG glass laser cutting, other features of which are the same as those of Example 1, the raw materials of the temporary acid-resistant protective glue contain: polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent, photopolymerization initiator and coupling agent;

[0067] In the acid-resistant etching temporary protective glue, by weight,

[0068] Polyurethane acrylate prepolymer: 25 to 50 parts;

[0069] Epoxy acrylate prepolymer: 15 to 40 parts;

[0070] Diluent: 15 to 35 parts;

[0071] Photopolymerization initiator: 4 to 8 parts;

[0072] Coupling agent: 1 to 3 parts.

[0073] The polyurethane acrylate prepolymer is a mixture of organosilicon-modified polyurethane acrylate and polyurethane acrylate. In the polyurethane acrylate prepolymer, the weight ratio of organosilicon-modified polyurethane acrylate and the polyurethane acrylate mixture is 0-0.3:1.

[0074] The model of polyurethane acrylate can be polyurethane acrylate model 554 of Double Bond Chemical Co., Ltd., polyurethane acrylate model 6148J-75 of Changxing Chemical Industry China Co., Ltd., or polyurethane acrylate model DR-028FS of Changxing Chemical Industry China Co., Ltd. The silicone-modified polyurethane acrylate is silicone-modified polyurethane acrylate model YC5016 of Jining Tangyi Chemical Co., Ltd.

[0075] The present invention uses a mixture of organosilicon-modified polyurethane acrylate and polyurethane acrylate, which can further improve the acid resistance and cutting fluid resistance while ensuring high transmittance and strong bonding ability.

[0076] Example 3

[0077] A temporary acid-etching resistant protective glue for UTG glass laser cutting, the other features of which are the same as those of Example 1, except that:

[0078] In the acid-resistant etching temporary protective glue, by weight,

[0079] Polyurethane acrylate prepolymer: 35 parts;

[0080] Epoxy acrylate prepolymer: 25 parts;

[0081] Diluent: 34 parts;

[0082] Photopolymerization initiator: 5 parts;

[0083] Coupling agent: 1 part.

[0084] The polyurethane acrylate prepolymer is polyurethane acrylate and is polyurethane acrylate model 554 produced by Double Bond Chemical Co., Ltd.

[0085] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is an epoxy acrylate prepolymer model B503 produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is CTFA.

[0086] The photopolymerization initiator of this embodiment is 3 parts of IRGACURE184 and 2 parts of LUCIRIN TPO.

[0087] The model of the coupling agent is KH560.

[0088] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0089] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0090] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 80° C. for 25 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0091] Example 4

[0092] A temporary acid-etching resistant protective glue for UTG glass laser cutting, the other features of which are the same as those of Example 3, except that:

[0093] In the acid-resistant etching temporary protective glue, by weight,

[0094] Polyurethane acrylate prepolymer: 45 parts;

[0095] Epoxy acrylate prepolymer: 20 parts;

[0096] Diluent: 28 parts;

[0097] Photopolymerization initiator: 5 parts;

[0098] Coupling agent: 2 parts.

[0099] The polyurethane acrylate prepolymer is polyurethane acrylate and the polyurethane acrylate model is 554 produced by Double Bond Chemical Co., Ltd.

[0100] The acid value of the epoxy acrylate prepolymer of the present invention is 170, and the epoxy acrylate prepolymer is an epoxy acrylate prepolymer of model 272 produced by Double Bond Chemical Co., Ltd. The diluent is PHEA.

[0101] The photopolymerization initiator in this embodiment is 3.5 parts of IRGACURE184 and 1.5 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0102] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0103] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0104] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0105] Example 5

[0106] A temporary acid-etching resistant protective glue for UTG glass laser cutting, the other features of which are the same as those of Example 3, except that:

[0107] In the acid-resistant etching temporary protective glue, by weight,

[0108] Polyurethane acrylate prepolymer: 40 parts;

[0109] Epoxy acrylate prepolymer: 25 parts;

[0110] Diluent: 26 parts;

[0111] Photopolymerization initiator: 6 parts;

[0112] Coupling agent: 3 parts.

[0113] The polyurethane acrylate prepolymer is polyurethane acrylate, and the polyurethane acrylate is polyurethane acrylate of model 6148J-75 produced by Changxing Chemical Industry China Co., Ltd.

[0114] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is the epoxy acrylate prepolymer model B503 produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is PHEA.

[0115] The photopolymerization initiator in this embodiment is 4 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0116] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0117] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0118] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 82° C. for 35 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0119] Example 6

[0120] A temporary acid-etching resistant protective glue for UTG glass laser cutting, the other features of which are the same as those of Example 3, except that:

[0121] In the acid-resistant etching temporary protective glue, by weight,

[0122] Polyurethane acrylate prepolymer: 40 parts;

[0123] Epoxy acrylate prepolymer: 25 parts;

[0124] Diluent: 26 parts;

[0125] Photopolymerization initiator: 6 parts;

[0126] Coupling agent: 3 parts.

[0127] The polyurethane acrylate prepolymer is a mixture of silicone-modified polyurethane acrylate and polyurethane acrylate.

[0128] In the polyurethane acrylate prepolymer, the weight ratio of the silicone-modified polyurethane acrylate to the polyurethane acrylate mixture is 0.2: 1. The polyurethane acrylate is the polyurethane acrylate of model DR-028FS produced by Changxing Chemical Industry China Co., Ltd., and the silicone-modified polyurethane acrylate is the silicone-modified polyurethane acrylate of model YC5016 produced by Jining Tangyi Chemical Co., Ltd.

[0129] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is the epoxy acrylate prepolymer model B503 produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is CTFA.

[0130] The photopolymerization initiator in this embodiment is 4 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0131] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0132] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0133] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0134] Example 7

[0135] A temporary acid-etching resistant protective glue for UTG glass laser cutting, the other features of which are the same as those of Example 3, except that:

[0136] In the acid-resistant etching temporary protective glue, by weight,

[0137] Polyurethane acrylate prepolymer: 50 parts;

[0138] Epoxy acrylate prepolymer: 15 parts;

[0139] Diluent: 40 parts;

[0140] Photopolymerization initiator: 8 parts;

[0141] Coupling agent: 1 part.

[0142] The polyurethane acrylate prepolymer is a mixture of silicone-modified polyurethane acrylate and polyurethane acrylate. In the polyurethane acrylate prepolymer, the weight ratio of silicone-modified polyurethane acrylate and the polyurethane acrylate mixture is 0.1:1. The polyurethane acrylate is a polyurethane acrylate with a model number of 6148J-75 produced by Changxing Chemical Industry China Co., Ltd., and the silicone-modified polyurethane acrylate is a silicone-modified polyurethane acrylate with a model number of YC5016 produced by Jining Tangyi Chemical Co., Ltd.

[0143] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is the epoxy acrylate prepolymer model B503 produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is PHEA.

[0144] The photopolymerization initiator in this embodiment is 8 parts of LUCIRIN TPO. The coupling agent is Dow Corning 6040.

[0145] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0146] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0147] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0148] Example 8

[0149] A temporary acid-etching resistant protective glue for UTG glass laser cutting, the other features of which are the same as those of Example 3, except that:

[0150] In the acid-resistant etching temporary protective glue, by weight,

[0151] Polyurethane acrylate prepolymer: 25 parts;

[0152] Epoxy acrylate prepolymer: 35 parts;

[0153] Diluent: 26 parts;

[0154] Photopolymerization initiator: 5 parts;

[0155] Coupling agent: 3 parts.

[0156] The polyurethane acrylate prepolymer is a mixture of silicone-modified polyurethane acrylate and polyurethane acrylate. In the polyurethane acrylate prepolymer, the weight ratio of silicone-modified polyurethane acrylate and the polyurethane acrylate mixture is 0.1:1. The polyurethane acrylate is a polyurethane acrylate with a model number of 6148J-75 produced by Changxing Chemical Industry China Co., Ltd., and the silicone-modified polyurethane acrylate is a silicone-modified polyurethane acrylate with a model number of YC5016 produced by Jining Tangyi Chemical Co., Ltd.

[0157] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is the B503 epoxy acrylate prepolymer produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is CTFA.

[0158] The photopolymerization initiator in this embodiment is 5 parts of LUCIRIN TPO, and the coupling agent is KH560.

[0159] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0160] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0161] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0162] Comparative Example 1

[0163] A temporary protective glue, the other features of which are the same as those of Example 3, except that:

[0164] In the acid-resistant etching temporary protective glue, by weight,

[0165] Polyurethane acrylate prepolymer: 40 parts;

[0166] Epoxy acrylate prepolymer: 25 parts;

[0167] Diluent: 26 parts;

[0168] Photopolymerization initiator: 6 parts;

[0169] Coupling agent: 3 parts.

[0170] The polyurethane acrylate prepolymer is polyurethane acrylate. The polyurethane acrylate is polyurethane acrylate of model 6145-100 produced by Changxing Chemical Industry China Co., Ltd., and the polyurethane acrylate has 6 functional groups.

[0171] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is the B503 epoxy acrylate prepolymer produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is CTFA.

[0172] The photopolymerization initiator in this embodiment is 4 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0173] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0174] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0175] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0176] Comparative Example 2

[0177] A temporary protective glue, the other features of which are the same as those of Example 3, except that:

[0178] In the acid-resistant etching temporary protective glue, by weight,

[0179] Polyurethane acrylate prepolymer: 40 parts;

[0180] Epoxy acrylate prepolymer: 25 parts;

[0181] Diluent: 25 parts;

[0182] Photopolymerization initiator: 6 parts;

[0183] Coupling agent: 3 parts.

[0184] The polyurethane acrylate prepolymer is polyurethane acrylate and the polyurethane acrylate model is 554 produced by Double Bond Chemical Co., Ltd.

[0185] The acid value of the epoxy acrylate prepolymer of the present invention is 220, and the epoxy acrylate prepolymer is an epoxy acrylate prepolymer of model 270 produced by Double Bond Chemical Co., Ltd. The diluent is CTFA.

[0186] The photopolymerization initiator in this embodiment is 4 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0187] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0188] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0189] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0190] Comparative Example 3

[0191] A temporary protective glue, the other features of which are the same as those of Example 3, except that:

[0192] In the acid-resistant etching temporary protective glue, by weight,

[0193] Polyurethane acrylate prepolymer: 40 parts;

[0194] Epoxy acrylate prepolymer: 25 parts;

[0195] Diluent: 28 parts;

[0196] Photopolymerization initiator: 6 parts;

[0197] Coupling agent: 2 parts.

[0198] The polyurethane acrylate prepolymer is polyurethane acrylate and the polyurethane acrylate model is 554 produced by Double Bond Chemical Co., Ltd.

[0199] The acid value of the epoxy acrylate prepolymer of the present invention is less than 100, and the epoxy acrylate prepolymer is an epoxy acrylate prepolymer of model 621A-80 produced by Changxing Chemical Industry China Co., Ltd. The diluent is PHEA.

[0200] The photopolymerization initiator in this embodiment is 4 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0201] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0202] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0203] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0204] Comparative Example 4

[0205] A temporary protective glue, the other features of which are the same as those of Example 3, except that:

[0206] In the acid-resistant etching temporary protective glue, by weight,

[0207] Polyurethane acrylate prepolymer: 40 parts;

[0208] Epoxy acrylate prepolymer: 25 parts;

[0209] Diluent: 40 parts;

[0210] Photopolymerization initiator: 4 parts;

[0211] Coupling agent: 1 part.

[0212] The polyurethane acrylate prepolymer is a mixture of silicone-modified polyurethane acrylate and polyurethane acrylate. In the polyurethane acrylate prepolymer, the weight ratio of silicone-modified polyurethane acrylate and the mixture of polyurethane acrylate is 0.4:1. The polyurethane acrylate is a polyurethane acrylate with a model number of DR-028FS produced by Changxing Chemical Industry China Co., Ltd., and the silicone-modified polyurethane acrylate is a silicone-modified polyurethane acrylate with a model number of YC5016 produced by Jining Tangyi Chemical Co., Ltd.

[0213] The acid value of the epoxy acrylate prepolymer of the present invention is 160, and the epoxy acrylate prepolymer is the epoxy acrylate prepolymer model B503 produced by Guangdong Boxing New Material Technology Co., Ltd. The diluent is PHEA.

[0214] The photopolymerization initiator in this embodiment is 1 part of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0215] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0216] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0217] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0218] Comparative Example 5

[0219] A temporary protective glue, the other features of which are the same as those of Example 3, except that:

[0220] In the acid-resistant etching temporary protective glue, by weight,

[0221] Polyurethane acrylate prepolymer: 20 parts;

[0222] Epoxy acrylate prepolymer: 20 parts;

[0223] Diluent: 28 parts;

[0224] Photopolymerization initiator: 5 parts;

[0225] Coupling agent: 2 parts.

[0226] The polyurethane acrylate prepolymer is polyurethane acrylate, and the model of polyurethane acrylate is Changxing 6148J-75.

[0227] The acid value of the epoxy acrylate prepolymer of the present invention is 170, and the epoxy acrylate prepolymer is an epoxy acrylate prepolymer of model 272 produced by Double Bond Chemical Co., Ltd. The diluent is PHEA.

[0228] The photopolymerization initiator in this embodiment is 3 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0229] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0230] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0231] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0232] Comparative Example 6

[0233] A temporary protective glue resistant to acid etching, the other features of which are the same as those of Example 1, except that:

[0234] In the acid-resistant etching temporary protective glue, by weight,

[0235] Polyurethane acrylate prepolymer: 55 parts;

[0236] Epoxy acrylate prepolymer: 20 parts;

[0237] Diluent: 28 parts;

[0238] Photopolymerization initiator: 5 parts;

[0239] Coupling agent: 2 parts.

[0240] The polyurethane acrylate prepolymer is polyurethane acrylate, and the model of polyurethane acrylate is Changxing 6148J-75.

[0241] The acid value of the epoxy acrylate prepolymer of the present invention is 170, and the epoxy acrylate prepolymer is an epoxy acrylate prepolymer of model 272 produced by Double Bond Chemical Co., Ltd. The diluent is PHEA.

[0242] The photopolymerization initiator in this embodiment is 3 parts of IRGACURE184 and 2 parts of LUCIRIN TPO. The coupling agent model is KH560.

[0243] The preparation method of the acid-resistant and etch-resistant temporary protective glue comprises the following steps:

[0244] S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture.

[0245] S2. Stir the mixture of S1 and add a photopolymerization initiator at the same time, then stir at 85° C. for 30 minutes to completely dissolve the photopolymerization initiator to obtain a temporary protective glue that is resistant to acid etching.

[0246] Test Case

[0247] 1. Physical properties

[0248] The acid-resistant temporary protective glue obtained in Examples 3 to 7 and the acid-resistant temporary protective glue obtained in Comparative Examples 1 to 8 were used to cover the surface of 20 cm*20 cm UTG glass with a thickness of 0.18 mm to 0.22 mm, and then light-cured, and then tested, wherein the cutting fluid was Liannuo SCC790T, and the test data are shown in Table 1:

[0249] Table 1, performance data of the acid-etching resistant temporary protective glue of Examples 3 to 7 and Comparative Examples 1 to 8.

[0250]

[0251] It can be seen from Table 1 that the curing time of the anti-acid etching temporary protection glue of the present invention does not exceed 46s, which improves the processing efficiency, and the transmittance of the anti-acid etching temporary protection glue of the present invention is not less than 92%, so the laser cutting effect is guaranteed, and the bonding force is 5B, which has excellent bonding force and ideal bonding effect. More importantly, the anti-acid etching temporary protection glue of the present invention can be soaked in the cutting fluid for at least 103min without dissolving, and can be soaked in 10% HF for at least 48min, and has anti-acid etching performance. It can be seen from Examples 3 to 8 that the present invention increases a specific proportion of silicone-modified polyurethane acrylate in the polyurethane acrylate prepolymer, which can ensure high transmittance and short curing time, and can also greatly improve the immersion time and acid resistance of the cutting fluid. It can be seen from Example 4, Comparative Examples 2 and Comparative Examples 3 that when the acid value of the epoxy acrylate prepolymer is in the range of 160 to 170, its resistance to cutting fluid immersion and HF immersion is better.

[0252] 2. Protection performance

[0253] The acid-resistant temporary protective glue obtained in Examples 3 to 7 was used to protect the 10 cm*10 cm UTG glass with a thickness of 0.15 mm, and then laser cutting was performed. The UTG glass after cutting had no edge breakage or cracking.

[0254] Therefore, the acid-resistant etching temporary protective glue of the present invention can be used in UTG glass laser cutting.

[0255] In summary, the above data show that the present invention, through the reasonable ratio of each component and appropriate preparation conditions, can make the acid-resistant temporary protective glue have long-term resistance to strong acid, high transmittance, and easy laser cutting, and also has strong bonding ability and short curing time. Therefore, the acid-resistant temporary protective glue can protect UTG, increase product yield, and improve processing efficiency while ensuring the laser cutting effect.

[0256] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A temporary protective glue for acid-resistant etching for UTG glass laser cutting, characterized in that: The raw materials of the acid-resistant and etch-resistant temporary protective glue include: polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent, photopolymerization initiator and coupling agent; In the acid-resistant etching temporary protective glue, by weight, Polyurethane acrylate prepolymer: 25 to 50 parts; Epoxy acrylate prepolymer: 15 to 40 parts; Diluent: 15 to 35 parts; Photopolymerization initiator: 4 to 8 parts; Coupling agent: 1 to 3 parts.

2. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 1, characterized in that: In parts by weight, Polyurethane acrylate prepolymer: 35 to 40 parts; Epoxy acrylate prepolymer: 20 to 30 parts; Diluent: 26 to 34 parts; Photopolymerization initiator: 5 to 6 parts; Coupling agent: 1 to 3 parts.

3. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 2, characterized in that: In parts by weight, Polyurethane acrylate prepolymer: 40 parts; Epoxy acrylate prepolymer: 25 parts; Diluent: 26 parts; Photopolymerization initiator: 5.5 parts; Coupling agent: 2 parts.

4. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to any one of claims 1 to 3, characterized in that: The polyurethane acrylate prepolymer is polyurethane acrylate; or The polyurethane acrylate prepolymer is a mixture of organosilicon-modified polyurethane acrylate and polyurethane acrylate; In the polyurethane acrylate prepolymer, the weight ratio of the silicone-modified polyurethane acrylate to the polyurethane acrylate mixture is 0-0.3:

1.

5. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 4, characterized in that: The polyurethane acrylate is polyurethane acrylate of model 554 produced by Double Bond Chemical Co., Ltd., polyurethane acrylate of model 6148J-75 produced by Changxing Chemical Industry China Co., Ltd., or polyurethane acrylate of model DR-028FS produced by Changxing Chemical Industry China Co., Ltd.

6. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 5, characterized in that: The organosilicon-modified polyurethane acrylate is the organosilicon-modified polyurethane acrylate with model number YC5016 produced by Jining Tangyi Chemical Co., Ltd.

7. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 6, characterized in that: The epoxy acrylate prepolymer is an epoxy acrylate prepolymer with model number B503 produced by Guangdong Boxing New Material Technology Co., Ltd., an epoxy acrylate prepolymer with model number 272 produced by Double Bond Chemical Co., Ltd., or an epoxy acrylate prepolymer with model number 1883 produced by DIC Synthetic Resin (Zhongshan) Co., Ltd.

8. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 6, characterized in that: The photopolymerization initiator is a phosphine oxide or a peroxide; Among them, the phosphine oxides are 2,4,6-trimethylbenzoyldiphenylphosphine oxide and ethyl 2,4,6-trimethylbenzoyldiphenylphosphinate; Among them, the peroxides are benzoins, benzoin alkyl ethers, aminoacetophenones, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone, and xanthones.

9. The acid-resistant and etch-resistant temporary protective glue for UTG glass laser cutting according to claim 6, characterized in that: The diluent is acrylamide, N-hydroxymethyl acrylamide, N-butoxymethyl (methyl) acrylamide, diacetone acrylamide or ethyl acetoacetate methacrylate; The coupling agent is an epoxy coupling agent.

10. A method for preparing an acid-resistant temporary protective glue for UTG glass laser cutting, characterized in that: The following steps are performed: S1. Dispersing polyurethane acrylate prepolymer, epoxy acrylate prepolymer, diluent and coupling agent uniformly to obtain a mixture. S2, stirring the mixture of S1, and adding a photopolymerization initiator to obtain the acid-etching resistant temporary protective glue.

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