Two-component adhesive and method for its production and use

Abstract

The application relates to a two-component adhesive glue and a preparation method and application thereof. The two-component adhesive glue comprises a first component and a second component. The raw materials of the first component include, in mass fraction, 10-30 parts of a methacrylate monomer, 5-10 parts of an acrylic ester oligomer, 1-5 parts of a crosslinking agent, 10-30 parts of a toughening agent, and 20.22-67.1 parts of a first additive. The raw materials of the second component include 10-90 parts of a plasticizer and 10-90 parts of an initiator. The first component and the second component are mixed according to a mass ratio of (9.5-10.5):1 to obtain the two-component adhesive glue. The application solves the problems of large volatility and large odor of the two-component adhesive glue, and the adhesive glue has good toughness, anti-deformation and anti-fracture after solidification.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fine chemicals, in particular to a two-component adhesive and a preparation method and application thereof. BACKGROUND

[0002] Rock plate connecting glue is mainly used for splicing of rock plate materials such as load-bearing rock plate furniture, rock plate cabinet, rock plate steps. At present, the market mainly uses three types of structural adhesives, namely unsaturated polyester resin AB glue, epoxy resin AB glue and acrylic ester resin AB glue. Among them, unsaturated polyester resin is brittle, yellow and cracking, which is gradually eliminated by the market. Epoxy resin AB glue has high strength, small odor, but relatively slow curing, poor adaptability to low temperature environment, high requirement for the cleanliness of the bonding surface, easy yellowing, which limits its application range. Acrylic ester AB glue has the advantages of fast bonding speed, short curing time in low temperature environment, low requirement for the cleanliness of the base material surface, good weather resistance and aging resistance of the glue layer after curing. However, its main disadvantages are large odor and poor toughness. SUMMARY

[0003] Therefore, it is necessary to provide a two-component adhesive and a preparation method and application thereof, which can reduce the odor of rock plate connecting glue and improve the toughness thereof.

[0004] In a first aspect, the present application provides a two-component adhesive, which comprises a first component and a second component, wherein the raw materials of the first component comprise, in terms of mass fraction:

[0005] methyl acrylate monomer, 10-30 parts;

[0006] acrylate oligomer, 5-10 parts;

[0007] crosslinking agent, 1-5 parts;

[0008] toughening agent, 10-30 parts; and

[0009] first additive, 20.22-67.1 parts;

[0010] The raw materials of the second component comprise, in terms of mass fraction:

[0011] plasticizer, 10-90 parts; and

[0012] initiator, 10-90 parts;

[0013] The two-component adhesive is prepared by mixing the first component and the second component in a mass ratio of (9.5-10.5):1.

[0014] In some embodiments, the methacrylate monomer comprises one or more of hydroxyethyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, 2-hydroxyethyl methacrylate phosphate, 2-phenoxyethyl methacrylate, and tetrahydrofurfuryl methacrylate.

[0015] Optionally, the raw materials of the first component comprise, by mass fraction:

[0016] hydroxyethyl methacrylate, 5-10 parts;

[0017] isobornyl methacrylate, 5-10 parts;

[0018] 2-hydroxyethyl methacrylate phosphate, 1-5 parts;

[0019] 2-phenoxyethyl methacrylate, 5-10 parts;

[0020] tetrahydrofurfuryl methacrylate, 5-10 parts;

[0021] acrylate oligomer, 5-10 parts;

[0022] crosslinking agent, 1-5 parts;

[0023] toughening agent, 10-30 parts; and

[0024] first auxiliary agent, 20.22-67.1 parts.

[0025] In some embodiments, the acrylate oligomer comprises one or more of epoxy acrylate oligomer, polyurethane acrylate oligomer, and polyester acrylate oligomer.

[0026] In some embodiments, the crosslinking agent comprises one or more of trimethylolpropane tri(3-mercaptopropionate), pentaerythritol triacrylate, ethylene glycol dimethacrylate, and triethylene glycol dimethacrylate.

[0027] In some embodiments, the toughening agent comprises one or more of nitrile rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, ABS, acrylic, and SBS.

[0028] In some embodiments, the first auxiliary agent comprises, by mass fraction, accelerator, coupling agent, polymerization inhibitor, stabilizer, filler, and pigment.

[0029] Optionally, the raw materials of the first component comprise, by mass fraction:

[0030] methacrylate monomer, 10-30 parts;

[0031] acrylate oligomer, 5-10 parts;

[0032] Crosslinking agent, 1-5 parts;

[0033] Toughening agent, 10-30 parts;

[0034] Promoter, 0.1-5 parts;

[0035] Coupling agent, 0.1-1 parts;

[0036] Polymerization inhibitor, 0.01-0.1 parts;

[0037] Stabilizer, 0.01-1 parts;

[0038] Filler, 10-30 parts;

[0039] Pigment, 10-30 parts.

[0040] In some embodiments, the promoter includes one or more of N,N-dimethylaniline, cobalt isooctoate, vanadyl acetylacetonate, tetramethyl thiourea, and vinyl thiourea.

[0041] In some embodiments, the coupling agent includes a silane coupling agent.

[0042] Optionally, the silane coupling agent includes KH550 and / or KH560.

[0043] In some embodiments, the polymerization inhibitor includes one or more of p-diphenol, 4-methoxyphenol, and t-butyl phenol.

[0044] In some embodiments, the stabilizer includes disodium EDTA and / or tetrasodium EDTA.

[0045] In some embodiments, the filler includes one or more of calcium carbonate, silicon powder, aluminum hydroxide, aluminum oxide, and barium sulfate.

[0046] In some embodiments, the pigment includes titanium white and / or lithopone.

[0047] In some embodiments, the plasticizer includes one or more of dibutyl phthalate, dioctyl phthalate, diethylene glycol phthalate, polyether N330, liquid paraffin, and petroleum resin.

[0048] In some embodiments, the initiator includes one or more of cumene hydroperoxide, t-butyl hydroperoxide, benzoyl peroxide, methyl ethyl ketone peroxide, and t-butyl benzoyl peroxide.

[0049] In some embodiments, the viscosity of the first component is 5000-40000 cps.

[0050] In some embodiments, the viscosity of the second component is 100-6000 cps.

[0051] In a second aspect, the application provides a preparation method of the two-component adhesive glue according to the first aspect, the preparation method comprising:

[0052] mixing and heating a methacrylate monomer, an acrylic oligomer, a crosslinking agent and a toughening agent to obtain a prepolymer, and adding a first additive to the prepolymer after cooling to obtain the first component;

[0053] mixing a plasticizer and an initiator to obtain the second component;

[0054] mixing the first component and the second component.

[0055] In some embodiments, the number average molecular weight of the prepolymer is 110,000-120,000.

[0056] In some embodiments, the heating temperature is 55-75℃.

[0057] Optionally, the heating time is 1.5-3h.

[0058] In some embodiments, the temperature after cooling is 25-35℃.

[0059] In some embodiments, the mixing time of the plasticizer and the initiator is 0.5-1.5h.

[0060] In a third aspect, the application provides the use of the two-component adhesive glue according to the first aspect as a rock plate connecting glue.

[0061] The application has the following beneficial effects:

[0062] The application uses methacrylate and acrylic oligomer as raw materials, solves the problems of large volatility and strong odor of existing similar products on the market, and has good toughness and anti-deformation and anti-fracture after curing. DETAILED DESCRIPTION

[0063] To make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application are described in detail below. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the application, therefore the application is not limited by the specific embodiments disclosed below.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0065] The ranges disclosed herein are defined by their lower and upper limits. Ranges can be expressed as from one lower limit to one upper limit. When separated by a conjunction or phrase such as "and / or", ranges can comprise any combination of the upper and lower limits; for example, a range of "10 to 100 and / or 50 to 200" would include 10 to 100, 50 to 200, 10 to 200, 100 to 200, and 10 to 200.

[0066] The first aspect of the present application provides a two-component adhesive, the two-component adhesive comprising a first component and a second component, the raw materials of the first component comprising, in terms of mass fraction:

[0067] a methacrylate monomer, 10-30 parts;

[0068] an acrylic oligomer, 5-10 parts;

[0069] a crosslinking agent, 1-5 parts;

[0070] a toughening agent, 10-30 parts; and

[0071] a first auxiliary agent, 20.22-67.1 parts.

[0072] In the raw materials of the first component, the mass fraction of the methacrylate monomer is, for example, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, or 30 parts; the mass fraction of the acrylic oligomer is, for example, 5.0 parts, 5.5 parts, 6.0 parts, 6.5 parts, 7.0 parts, 7.5 parts, 8.0 parts, 8.5 parts, 9.0 parts, 9.5 parts, or 10.0 parts; the mass fraction of the crosslinking agent is, for example, 1 part, 2 parts, 3 parts, 4 parts, or 5 parts; the mass fraction of the toughening agent is, for example, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, or 30 parts; and the mass fraction of the first auxiliary agent is, for example, 20.22 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, or 67.1 parts.

[0073] The raw materials of the second component comprise, in terms of mass fraction:

[0074] a plasticizer, 10-90 parts; and

[0075] an initiator, 10-90 parts.

[0076] The mass fraction of the plasticizer in the raw material of the second component is, for example, 10 parts, 20 parts, 30 parts, 40 parts, 50 parts, 60 parts, 70 parts, 80 parts, or 90 parts; and the mass fraction of the initiator is, for example, 10 parts, 20 parts, 30 parts, 40 parts, 50 parts, 60 parts, 70 parts, 80 parts, or 90 parts.

[0077] Optionally, the initiator accounts for 10% to 20% of the mass sum of the plasticizer and the initiator.

[0078] The two-component adhesive glue is obtained by mixing the first component and the second component in a mass ratio of (9.5-10.5): 1, for example, 9.5: 1, 9.6: 1, 9.7: 1, 9.8: 1, 9.9: 1, 10.0: 1, 10.1: 1, 10.2: 1, 10.3: 1, 10.4: 1, or 10.5: 1.

[0079] The present application uses a low-volatility, low-odor methacrylate monomer, combined with an acrylic ester oligomer, to reduce the odor of the adhesive glue and effectively improve the toughness, anti-deformation, and anti-fracture performance of the glue after curing.

[0080] In some embodiments, the methacrylate monomer includes one or more of hydroxyethyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, 2-hydroxyethyl methacrylate phosphate, 2-phenoxyethyl methacrylate, and tetrahydrofurfuryl methacrylate.

[0081] Optionally, the raw material of the first component includes, in terms of mass fraction:

[0082] hydroxyethyl methacrylate, 5-10 parts;

[0083] isobornyl methacrylate, 5-10 parts;

[0084] 2-hydroxyethyl methacrylate phosphate, 1-5 parts;

[0085] 2-phenoxyethyl methacrylate, 5-10 parts;

[0086] tetrahydrofurfuryl methacrylate, 5-10 parts;

[0087] acrylic ester oligomer, 5-10 parts;

[0088] crosslinking agent, 1-5 parts;

[0089] toughening agent, 10-30 parts; and

[0090] first auxiliary agent, 20.22-67.1 parts.

[0091] The methacrylate monomer of the present application is selected from the combination of hydroxyethyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, 2-hydroxyethyl methacrylate phosphate, 2-phenoxyethyl methacrylate and tetrahydrofurfuryl methacrylate, and the mass fraction of each component is controlled to effectively ensure that the adhesive has the characteristics of low odor and high toughness.

[0092] In some embodiments, the acrylate oligomer comprises one or more of epoxy acrylate oligomer, polyurethane acrylate oligomer and polyester acrylate oligomer.

[0093] In some embodiments, the crosslinking agent comprises one or more of trimethylolpropane tri(3-mercaptopropionate), pentaerythritol triacrylate, ethylene glycol dimethacrylate and triethylene glycol dimethacrylate.

[0094] In some embodiments, the toughening agent comprises one or more of nitrile rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, ABS, acrylic and SBS. Among them, ABS represents styrene-butadiene-styrene block copolymer, and SBS represents styrene-butadiene-styrene block copolymer.

[0095] In some embodiments, the first auxiliary agent comprises an accelerator, a coupling agent, a polymerization inhibitor, a stabilizer, a filler and a pigment.

[0096] Optionally, the raw materials of the first component comprise, in terms of mass fraction:

[0097] Methacrylate monomer, 10-30 parts;

[0098] Acrylate oligomer, 5-10 parts;

[0099] Crosslinking agent, 1-5 parts;

[0100] Toughening agent, 10-30 parts;

[0101] Accelerator, 0.1-5 parts;

[0102] Coupling agent, 0.1-1 part;

[0103] Polymerization inhibitor, 0.01-0.1 part;

[0104] Stabilizer, 0.01-1 part;

[0105] Filler, 10-30 parts; and

[0106] Pigment, 10-30 parts.

[0107] In some embodiments, the accelerator comprises one or more of N,N-dimethylaniline, cobalt isooctoate, vanadium acetylacetonate, tetramethyl thiourea and vinyl thiourea.

[0108] In some embodiments, the coupling agent comprises a silane coupling agent.

[0109] Optionally, the silane coupling agent comprises KH550 and / or KH560.

[0110] In some embodiments, the polymerization inhibitor comprises one or more of p-diphenol, 4-methoxyphenol and t-butyl phenol.

[0111] In some embodiments, the stabilizer comprises disodium EDTA salt and / or tetrasodium EDTA salt.

[0112] In some embodiments, the filler comprises one or more of calcium carbonate, silicon powder, aluminum hydroxide, aluminum oxide and barium sulfate.

[0113] In some embodiments, the pigment comprises titanium white and / or lithopone.

[0114] In some embodiments, the plasticizer comprises one or more of dibutyl phthalate, dioctyl phthalate, diethylene glycol phthalate, polyether N330, liquid paraffin and petroleum resin.

[0115] In some embodiments, the initiator comprises one or more of cumene hydroperoxide, t-butyl hydroperoxide, benzoyl peroxide, methyl ethyl ketone peroxide and t-butyl benzoyl peroxide.

[0116] In some embodiments, the viscosity of the first component is 5000-40000 cps, for example 5000 cps, 10000 cps, 15000 cps, 20000 cps, 25000 cps, 30000 cps, 35000 cps or 40000 cps. It should be noted that the viscosity is tested at 25°C in the present application.

[0117] In some embodiments, the viscosity of the second component is 100-6000 cps, for example 100 cps, 500 cps, 1000 cps, 1500 cps, 2000 cps, 2500 cps, 3000 cps, 3500 cps, 4000 cps, 4500 cps, 5000 cps, 5500 cps or 6000 cps. It should be noted that the viscosity is tested at 25°C in the present application.

[0118] The second aspect of the present application provides a preparation method of the two-component adhesive glue according to the first aspect, wherein the preparation method of the two-component adhesive glue comprises:

[0119] The methyl methacrylate monomer, the acrylic oligomer, the crosslinking agent and the toughening agent are mixed and heated to obtain a prepolymer, and the first additive is added after the prepolymer is cooled to obtain the first component;

[0120] The plasticizer and the initiator are mixed to obtain the second component;

[0121] The first component and the second component are mixed.

[0122] In some embodiments, the number average molecular weight of the prepolymer is 110,000-120,000, for example, 11.0, 11.1, 11.2, 11.3, 11.4, 11.5, 11.6, 11.7, 11.8, 11.9 or 12.0 ten thousand. In the present application, the number average molecular weight of the prepolymer in the preparation process of the first component is controlled to ensure the cohesive force of the adhesive and improve the adhesion.

[0123] In the present application, the purpose of the first heating is that the methyl methacrylate monomer, the acrylic oligomer and the crosslinking agent in the first component undergo a polymerization reaction to form a prepolymer.

[0124] In some embodiments, the heating temperature is 55-75℃, for example, 55℃, 57℃, 59℃, 61℃, 63℃, 65℃, 67℃, 69℃, 71℃, 73℃ or 75℃.

[0125] Optionally, the heating time is 1.5-3h, for example, 1.5h, 1.6h, 1.8h, 2.0h, 2.2h, 2.4h, 2.6h, 2.8h or 3.0h.

[0126] In some embodiments, the temperature after cooling is 25-35℃, for example, 25℃, 26℃, 27℃, 28℃, 29℃, 30℃, 31℃, 32℃, 33℃, 34℃ or 35℃.

[0127] In some embodiments, the mixing time of the plasticizer and the initiator is 0.5-1.5h, for example, 0.5h, 0.6h, 0.7h, 0.8h, 0.9h, 1.0h, 1.1h, 1.2h, 1.3h, 1.4h or 1.5h. Optionally, stirring is used in the mixing process, and the stirring speed is 70-100r / min.

[0128] In some embodiments, the preparation method of the adhesive comprises:

[0129] 10-30 parts of the methyl methacrylate monomer, 5-10 parts of the acrylic oligomer, 1-5 parts of the crosslinking agent and 10-30 parts of the toughening agent are weighed, and mixed and heated at 55-75℃ for 1.5-3h to obtain a prepolymer;

[0130] Then, the temperature is lowered to 25-35℃, 0.1-5 parts of an accelerator, 0.1-1 parts of a coupling agent, 0.01-0.1 parts of a polymerization inhibitor, 0.01-1 parts of a stabilizer, 10-30 parts of a filler, and 10-30 parts of a pigment are added to obtain the first component with a viscosity of 5000-40000 cps at 25℃;

[0131] The second component with a viscosity of 100-6000 cps is obtained by weighing 10-90 parts of a plasticizer and 10-90 parts of an initiator, mixing and stirring for 0.5-1.5 h.

[0132] In use, the first component and the second component are mixed in a mass ratio of (9.5-10.5):1.

[0133] The application provides a third aspect of the application of the two-component adhesive as the rock plate connecting adhesive.

[0134] In the following examples and comparative examples, the polyurethane acrylate oligomer is purchased from Changxing Chemical Co., Ltd., and the model number is DU-249.

[0135] Triethylene glycol dimethacrylate is purchased from Guangzhou Sanhuang Chemical Co., Ltd.

[0136] The ABS resin is purchased from Jimei Chemical Co., Ltd., and the model number is PA-962.

[0137] The other raw materials not specifically mentioned are ordinary commercially available products.

[0138] Example 1

[0139] The hydroxyethyl methacrylate 5 parts, isobornyl methacrylate 5 parts, 2-hydroxyethyl methacrylate phosphate 1 part, 2-phenoxyethyl methacrylate 10 parts, tetrahydrofurfuryl methacrylate 9 parts, polyurethane acrylate oligomer 5 parts, triethylene glycol dimethacrylate 5 parts, and ABS resin 30 parts are mixed and heated to react at 60℃ for 2 h to obtain a prepolymer with a molecular weight of 110,000;

[0140] Then, the temperature is lowered to 30℃, 1 part of N,N-dimethyl aniline, 0.5 parts of KH550 coupling agent, 0.01 parts of p-diphenol, 0.01 parts of disodium EDTA salt, 30 parts of calcium carbonate, and 10 parts of titanium white powder are added to obtain the first component with a viscosity of 20000 cps;

[0141] The dibutyl phthalate 90 parts and the benzoyl peroxide 10 parts are mixed and stirred for 1 h to obtain the second component with a viscosity of 200 cps.

[0142] In use, the first component and the second component are mixed in a mass ratio of 10:1, and then applied after coating, with an effective time of 5 min.

[0143] Example 2

[0144] Hydroxyethyl methacrylate 10 parts, isobornyl methacrylate 5 parts, 2-hydroxyethyl methacrylate phosphate 1 part, 2-phenoxyethyl methacrylate 10 parts, tetrahydrofurfuryl methacrylate 4 parts, polyurethane acrylate oligomer 5 parts, triethylene glycol dimethacrylate 10 parts, and ABS resin 25 parts are weighed, mixed and heated to react at 60°C for 2h to obtain a prepolymer;

[0145] Then, the temperature is lowered to 30°C, N,N-dimethylaniline 1 part, KH550 coupling agent 0.5 part, p-diphenol 0.01 part, EDTA disodium salt 0.01 part, aluminum hydroxide 30 parts, and titanium white powder 10 parts are added to obtain a first component with a viscosity of 25000cps;

[0146] Dibutyl phthalate 90 parts, benzoyl peroxide 10 parts are weighed, mixed and stirred for 1h to obtain a second component with a viscosity of 200cps;

[0147] In use, the first component and the second component are mixed in a mass ratio of 10:1, and then applied after coating, with an effective time of 5 min.

[0148] Example 3

[0149] Hydroxyethyl methacrylate 10 parts, isobornyl methacrylate 5 parts, 2-hydroxyethyl methacrylate phosphate 5 parts, 2-phenoxyethyl methacrylate 10 parts, polyurethane acrylate oligomer 5 parts, triethylene glycol dimethacrylate 5 parts, and ABS resin 15 parts are weighed, mixed and heated to react at 60°C for 2h to obtain a prepolymer;

[0150] Then, the temperature is lowered to 30°C, N,N-dimethylaniline 2 parts, KH550 coupling agent 0.5 part, p-diphenol 0.01 part, EDTA disodium salt 0.01 part, calcium carbonate 30 parts, and titanium white powder 10 parts are added to obtain a first component with a viscosity of 22000cps;

[0151] Dibutyl phthalate 70 parts, benzoyl peroxide 30 parts are weighed, mixed and stirred for 1h to obtain a second component with a viscosity of 300cps;

[0152] In use, the first component and the second component are mixed in a mass ratio of 10:1, and then applied after coating, with an effective time of 5 min.

[0153] Example 4

[0154] Take hydroxyethyl methacrylate 5 parts, isobornyl methacrylate 5 parts, 2-hydroxyethyl methacrylate phosphate 1 part, 2-phenoxyethyl methacrylate 5 parts, polyurethane acrylate oligomer 10 parts, triethylene glycol dimethacrylate 3 parts and ABS resin 20 parts, mixed and heated at 60℃ for 2.5h to obtain a prepolymer;

[0155] Then cool to 30℃, add N,N-dimethyl aniline 5 parts, KH550 coupling agent 0.1 parts, p-diphenol 0.1 parts, EDTA disodium salt 0.05 parts, calcium carbonate 20 parts and titanium white powder 20 parts to obtain a first component with a viscosity of 30000cps;

[0156] Take dibutyl phthalate 10 parts, benzoyl peroxide 90 parts, mix and stir for 1h to obtain a second component with a viscosity of 5500cps;

[0157] In use, the first component and the second component are mixed in a mass ratio of 9.5:1, coated and used, and the effective time is 5min.

[0158] Example 5

[0159] Prepare the adhesive according to the preparation method of Example 1, except that the temperature of the mixed and heated reaction is adjusted to 55℃ and the time is 2h, and the number average molecular weight of the prepolymer is 90,000.

[0160] Example 6

[0161] Prepare the adhesive according to the preparation method of Example 1, except that the temperature of the mixed and heated reaction is adjusted to 70℃ and the time is 2h, and the number average molecular weight of the prepolymer is 130,000.

[0162] Comparative Example 1

[0163] Prepare the adhesive according to the preparation method of Example 1, except that the hydroxyethyl methacrylate 5 parts, isobornyl methacrylate 5 parts, 2-hydroxyethyl methacrylate phosphate 1 part, 2-phenoxyethyl methacrylate 10 parts are all replaced by the same mass fraction of methyl methacrylate.

[0164] Test the performance of the two-component adhesive prepared in the above examples and comparative examples, and the test method includes:

[0165] The test method of initial compression shear strength and final compression strength refers to GB 24264-2009.

[0166] The test of whether the appearance is delaminated and cracked uses observation method; the odor test uses fan smelling method.

[0167] The test results are shown in Table 1.

[0168] Table 1

[0169]

[0170]

[0171] From the above table, it can be seen that:

[0172] The present application uses low-volatility, low-odor methacrylate, combined with acrylic oligomer, reduces the odor of the adhesive, and effectively improves the toughness of the cured adhesive, and has good resistance to deformation and fracture resistance.

[0173] In the present application, the preparation parameters in the preparation process of the first component are controlled, and the number average molecular weight of the prepolymer prepared is adjusted, so as to ensure the cohesive force of the adhesive and improve the adhesion.

[0174] The above-mentioned examples only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A two-component adhesive characterized in that, The two-component adhesive glue comprises a first component and a second component, and the raw materials of the first component comprise, in terms of mass fraction: a methacrylate monomer, 10-30 parts; an acrylic oligomer, 5-10 parts; a crosslinking agent, 1-5 parts; a toughening agent, 10-30 parts; and a first additive, 20.22-67.1 parts; The methacrylate monomer, the acrylic oligomer, the crosslinking agent and the toughening agent are mixed and heated to obtain a prepolymer with a number average molecular weight of 110,000-120,000, and the first additive is added after the prepolymer is cooled to obtain the first component. The methacrylate monomer comprises, in terms of mass fraction: hydroxyethyl methacrylate, 5-10 parts; isobornyl methacrylate, 5-10 parts; 2-hydroxyethyl methacrylate phosphate, 1-5 parts; 2-phenoxyethyl methacrylate, 5-10 parts; tetrahydrofurfuryl methacrylate, 5-10 parts; The raw materials of the second component comprise, in terms of mass fraction: a plasticizer, 10-90 parts; and an initiator, 10-90 parts; The two-component adhesive glue is obtained by mixing the first component and the second component in a mass ratio of (9.5-10.5):1, and the preparation method of the two-component adhesive glue comprises: The methacrylate monomer, the acrylic oligomer, the crosslinking agent and the toughening agent are mixed and heated to obtain a prepolymer, the heating temperature is 55-75℃, and the heating time is 1.5-3h, and the first additive is added after the prepolymer is cooled to obtain the first component; The plasticizer and the initiator are mixed to obtain the second component; The first component and the second component are mixed.

2. The two-component adhesive as described in claim 1, characterized in that, The two-component adhesive glue further satisfies at least one of the following conditions: (1) the acrylic oligomer comprises one or more of epoxy acrylate oligomer, polyurethane acrylate oligomer and polyester acrylate oligomer; (2) the crosslinking agent comprises one or more of trimethylolpropane tri(3-mercaptopropionate), pentaerythritol triacrylate, ethylene glycol dimethacrylate and triethylene glycol dimethacrylate; (3) the toughening agent comprises one or more of butyl nitrile rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, ABS, acrylic and SBS.

3. The two-component adhesive as described in claim 1, characterized in that, The first additive comprises an accelerator, a coupling agent, a polymerization inhibitor, a stabilizer, a filler and a pigment.

4. The two-component adhesive as described in claim 3, characterized in that, The raw materials of the first component comprise, in terms of mass fraction: a methacrylate monomer, 10-30 parts; an acrylic oligomer, 5-10 parts; a crosslinking agent, 1-5 parts; a toughening agent, 10-30 parts; an accelerator, 0.1-5 parts; a coupling agent, 0.1-1 part; a polymerization inhibitor, 0.01-0.1 part; a stabilizer, 0.01-1 part; a filler, 10-30 parts; and a pigment, 10-30 parts.

5. The two-component adhesive as described in claim 3, characterized in that, The first additive further satisfies at least one of the following conditions: (1) the accelerator comprises one or more of N,N-dimethylaniline, cobalt isooctoate, vanadium acetylacetonate, tetramethyl thiourea and vinyl thiourea; (2) the coupling agent comprises a silane coupling agent; (3) the polymerization inhibitor comprises one or more of p-diphenylol, 4-methoxy phenol and t-butyl phenol; (4) the stabilizer comprises disodium EDTA and / or tetrasodium EDTA; (5) the filler comprises one or more of calcium carbonate, silicon powder, aluminum hydroxide, aluminum oxide and barium sulfate; (6) the pigment comprises titanium white and / or lithopone.

6. The two-component adhesive as described in claim 5, characterized in that, The silane coupling agent comprises KH550 and / or KH560.

7. The two-component adhesive according to any one of claims 1-6, characterized in that, The two-component adhesive further satisfies at least one of the following conditions: (1) the plasticizer comprises one or more of dibutyl phthalate, dioctyl phthalate, diethylene glycol phthalate, polyether N330, liquid paraffin and petroleum resin; (2) the initiator comprises one or more of cumene hydroperoxide, t-butyl hydroperoxide, benzoyl peroxide, methyl ethyl ketone peroxide and t-butyl benzoyl peroxide.

8. The two-component adhesive according to any one of claims 1-6, characterized in that, The two-component adhesive further satisfies at least one of the following conditions: (1) the viscosity of the first component is 5000-40000 cps; (2) the viscosity of the second component is 100-6000 cps.

9. A method of preparing the two-component adhesive according to any one of claims 1 to 8, characterized in that, The preparation method of the two-component adhesive comprises: mixing and heating the methacrylate monomer, the acrylic oligomer, the crosslinking agent and the toughening agent, the heating temperature is 55-75℃, the time is 1.5-3h, to obtain a prepolymer with a number average molecular weight of 110-120 thousand, after cooling the prepolymer, adding the first additive to obtain the first component; mixing the plasticizer and the initiator to obtain the second component; mixing the first component and the second component.

10. The production method according to claim 9, wherein The preparation method further satisfies at least one of the following conditions: (1) the temperature after cooling is 25-35℃; (2) the mixing time of the plasticizer and the initiator is 0.5-1.5h.

11. Use of the two-component adhesive of any one of claims 1-8 as a rock plate connecting adhesive.

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