Raw material composition for tile caulking agent, tile caulking agent and preparation method thereof

Abstract

The present invention relates to the field of tile caulking agents, and discloses a raw material composition for tile caulking agents, a tile caulking agent, and a preparation method thereof. The composition comprises a combination A and a combination B in a weight ratio of 1:0.8-1.2; based on the total mass of the combination A, the combination A comprises: 80-90wt% of epoxy resin, 5-10wt% of nano-calcium carbonate, 1-3wt% of a defoaming agent, 1-10wt% of a reactive diluent, and 1-10wt% of luminous powder; based on the total mass of the combination B, the combination B comprises: 70-80wt% of a modified amine epoxy curing agent, 5-10wt% of nano-calcium carbonate, 1-3wt% of a thixotropic agent, 1-3wt% of an accelerator, 1-10wt% of a toughening agent, 1-3wt% of a defoaming agent, 1-10wt% of a luminous powder, and 0-10wt% of a pigment. The tile caulking agent provided by the present invention has the properties of high viscosity, strong compressive resistance, and strong bonding shearing ability.

Description

Technical Field

[0001] The present invention relates to the field of tile caulking agents, and in particular to a raw material composition for tile caulking agents, a tile caulking agent and a preparation method thereof. Background Art

[0002] Ceramic tiles are commonly used as floor and wall decoration materials in indoor and outdoor decoration. A very important process during installation is leaving gaps. Leaving gaps not only helps to cope with volume changes caused by changes in temperature and humidity, compensate for construction errors, enhance tile adhesion, prevent hollowing and falling off, but also improves the durability and aesthetics of tile paving.

[0003] Tile grout is used for gap decoration. Its performance has been continuously optimized and its main development has gone through the following stages:

[0004] The first generation: white cement caulking agent, which is the earliest caulking material. Its main component is white cement. It is not stain-resistant and has been eliminated.

[0005] Second generation: Cement-based caulking is a traditional caulking material that has been used for many years and is usually applied directly by masons after laying tiles. The advantage is low cost, but poor waterproof and mildew resistance.

[0006] The third generation: Resin caulk, usually a two-component product, consists of resin pigment, curing agent and solvent. It is mildew-resistant and easy to clean.

[0007] Existing caulking agents are primarily used to fill gaps between decorative materials such as tiles to prevent water infiltration and mold growth, keeping walls and floors beautiful and clean. However, as people's demand for durability and safety in home decoration continues to increase, some shortcomings of existing caulking agents have gradually become apparent.

[0008] Existing caulking agents are prone to drying and cracking, tile falling off, and short service life under the influence of strong external forces or long-term natural environmental factors. This not only reduces the aesthetics of the caulking agent, but also causes serious harm to human life safety when tiles fall from a height.

[0009] CN118064091A discloses a caulking agent for use in bathroom tile crevices. The agent comprises components A and B. Component A includes the following raw materials by weight: 10-25 parts fatty alcohol-modified bisphenol A epoxy resin, 20-30 parts epoxy resin, 20-30 parts filler A, 6-10 parts pigment, 0.5-1 part plasticizer, and 0.1-1 part defoamer. Component B includes the following raw materials by weight: 30-50 parts modified amine curing agent, 20-30 parts filler B, 1-3 parts toughening agent, 1-3 parts antibacterial agent, and 0.5-3 parts dispersant and / or diluent. While the caulking agent can adapt to temperature and humidity changes, exhibits excellent heat and moisture resistance and antibacterial properties, and exhibits strong adsorption to tile materials, fully filling tile crevices and ensuring a decorative effect, it lacks strong compressive and shear strength, and is susceptible to cracking and shearing under external forces.

[0010] Therefore, there is an urgent need for a tile caulking agent with high viscosity, strong compressive strength and strong bonding shearing ability to solve this defective situation. Summary of the Invention

[0011] The purpose of the present invention is to overcome the problems of poor compressive strength, poor bonding shearing ability and low viscosity of the porcelain joint agent provided by the prior art.

[0012] In order to achieve the above-mentioned object, the first aspect of the present invention provides a raw material composition for a tile caulking agent, wherein the composition comprises a combination A and a combination B in a weight ratio of 1:0.8-1.2;

[0013] Based on the total mass of the composition A, the composition A contains: 80-90 wt% of epoxy resin, 5-10 wt% of nano calcium carbonate, 1-3 wt% of defoaming agent, 1-10 wt% of active diluent, and 1-10 wt% of luminous powder;

[0014] Based on the total mass of the B combination, the B combination contains: 70-80wt% of a modified amine epoxy curing agent, 5-10wt% of nano-calcium carbonate, 1-3wt% of a thixotropic agent, 1-3wt% of an accelerator, 1-10wt% of a toughening agent, 1-3wt% of a defoaming agent, 1-10wt% of a luminous powder, and 0-10wt% of a pigment;

[0015] In the combination A, the epoxy resin is a combination of a bisphenol A epoxy resin and a hydrogenated bisphenol A epoxy resin, and the amounts of the bisphenol A epoxy resin and the hydrogenated bisphenol A epoxy resin are such that the epoxy equivalent of the epoxy resin in the combination A is 180-190 g / mol;

[0016] In the combination B, the active hydrogen equivalent of the modified amine epoxy curing agent is 170-180 g / mol;

[0017] In the combination A and the combination B, the average volume diameter of the nano-calcium carbonate particles is 0.01 μm-0.1 μm.

[0018] The second aspect of the present invention provides a method for preparing a tile grout, which is carried out using the components of the composition described in the first aspect, comprising:

[0019] (1) Preparation of the first component and the second component:

[0020] Under stirring conditions, the components in combination A are first mixed to obtain a first component; and

[0021] Under stirring conditions, the components in combination B are mixed for a second time to obtain a second component;

[0022] (2) The first component and the second component are mixed and contacted to obtain the tile grout.

[0023] The third aspect of the present invention provides a tile grout prepared by the method described in the second aspect.

[0024] The tile caulking agent provided by the present invention has the characteristics of high viscosity, strong compressive resistance and strong bonding shearing ability, can effectively enhance the adsorption capacity of tiles, reduce cracking and falling off under the action of external forces, and extend the service life of tiles.

[0025] In addition, the tile caulking agent provided by the present invention has high afterglow brightness while ensuring excellent mechanical properties, and can serve as a mark and prompt in dark places, helping people find the path more easily or avoid collisions. DETAILED DESCRIPTION

[0026] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0027] It should be noted that, in various aspects of the present invention, for the same components or terms in various aspects, the present invention is only described once in one aspect without repeated description, which should not be understood by those skilled in the art as a limitation of the present invention.

[0028] As mentioned above, the first aspect of the present invention provides a raw material composition for tile caulking agent, wherein the composition comprises combination A and combination B in a weight ratio of 1:0.8-1.2;

[0029] Based on the total mass of the composition A, the composition A contains: 80-90 wt% of epoxy resin, 5-10 wt% of nano calcium carbonate, 1-3 wt% of defoaming agent, 1-10 wt% of active diluent, and 1-10 wt% of luminous powder;

[0030] Based on the total mass of the B combination, the B combination contains: 70-80wt% of a modified amine epoxy curing agent, 5-10wt% of nano-calcium carbonate, 1-3wt% of a thixotropic agent, 1-3wt% of an accelerator, 1-10wt% of a toughening agent, 1-3wt% of a defoaming agent, 1-10wt% of a luminous powder, and 0-10wt% of a pigment;

[0031] In the combination A, the epoxy resin is a combination of a bisphenol A epoxy resin and a hydrogenated bisphenol A epoxy resin, and the amounts of the bisphenol A epoxy resin and the hydrogenated bisphenol A epoxy resin are such that the epoxy equivalent of the epoxy resin in the combination A is 180-190 g / mol;

[0032] In the combination B, the active hydrogen equivalent of the modified amine epoxy curing agent is 170-180 g / mol;

[0033] In the combination A and the combination B, the average volume diameter of the nano-calcium carbonate particles is 0.01 μm-0.1 μm.

[0034] Preferably, based on the total mass of the combination A, the combination A contains: 80-85wt% epoxy resin, 5-10wt% nano calcium carbonate, 1-3wt% defoaming agent, 2-8wt% active diluent, and 5-10wt% luminous powder.

[0035] Preferably, based on the total mass of the B combination, the B combination contains: 75-80wt% of modified amine epoxy curing agent, 5-10wt% of nano calcium carbonate, 1-3wt% of thixotropic agent, 2-3wt% of accelerator, 2-6wt% of toughening agent, 1-3wt% of defoaming agent, 5-10wt% of luminous powder, and 0-10wt% of pigment.

[0036] More preferably, based on the total mass of the B combination, the B combination contains: 75-80wt% of modified amine epoxy curing agent, 5-10wt% of nano calcium carbonate, 1-3wt% of thixotropic agent, 2-3wt% of accelerator, 1-10wt% of toughening agent, 1-3wt% of defoaming agent, 5-10wt% of luminous powder, and 5-10wt% of pigment.

[0037] According to a preferred embodiment, based on the total mass of component A, component A comprises: 80-85wt% epoxy resin, 5-10wt% nano-calcium carbonate, 1-3wt% defoamer, 2-8wt% reactive diluent, and 5-10wt% luminescent powder; and based on the total mass of component B, component B comprises: 75-80wt% modified amine epoxy curing agent, 5-10wt% nano-calcium carbonate, 1-3wt% thixotropic agent, 2-3wt% accelerator, 2-6wt% toughening agent, 1-3wt% defoamer, 5-10wt% luminescent powder, and 0-10wt% pigment. The inventors have found that under these preferred conditions, the tile caulking agent provided by the present invention has greater viscosity and stronger compressive strength and adhesive shear strength.

[0038] Preferably, in the combination A, the weight ratio of the bisphenol A epoxy resin to the hydrogenated bisphenol A epoxy resin in the epoxy resin is 2-3:1.

[0039] Particularly preferably, in the combination A, the bisphenol A epoxy resin is CYD-128 produced by Baling Petrochemical, and the hydrogenated bisphenol A epoxy resin is XY518 produced by Wuhan Jiufengyun New Materials Co., Ltd.

[0040] It should be noted that, in the combination A and the combination B, the types of nano-calcium carbonate may be the same or different, and each may be independently selected from nano-calcium carbonate having an average particle diameter of 0.01 μm to 0.1 μm.

[0041] Particularly preferably, the nano calcium carbonate is NEOLIGHT SP provided by Takehara Chemical.

[0042] It should be noted that, in the combination A and the combination B, the types of luminous powder may be the same or different, and each may be independently selected from yellow-green and / or blue-green luminous powder.

[0043] Particularly preferably, in combination A and combination B, the luminous powder is yellow-green luminous powder and / or blue-green luminous powder, with an average particle volume diameter of ≤50 μm. For example, the yellow-green luminous powder (surface modified) and blue-green luminous powder (unsurface modified) are from Foshan Juliang Optical Materials Co., Ltd.

[0044] Preferably, in the combination A, the active diluent is at least one of 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, and polypropylene glycol diglycidyl ether.

[0045] Particularly preferably, in the combination A, the active diluent is 1,6-hexanediol diglycidyl ether. The inventors of the present invention have found in their research that, under this preferred condition, the tile grout provided by the present invention has a greater viscosity and stronger compressive resistance and bonding shear ability.

[0046] More preferably, in the combination A, the active diluent is LS-622 produced by Hubei Green Home Materials Technology Co., Ltd.

[0047] Preferably, in the combination B, the thixotropic agent is a polyamide solution. Particularly preferably, in the combination B, the thixotropic agent is at least one of a polyamide wax anti-settling agent, a polyamide wax micropowder thixotropic anti-settling agent, and a polyamide-modified hydrogenated castor oil thixotropic agent.

[0048] Preferably, in combination B, the accelerator is a tertiary amine accelerator. More preferably, in combination B, the accelerator is at least one of 2,4,6-tris(dimethylaminomethyl)phenol, benzyldimethylamine, and o-hydroxybenzyldimethylamine. Particularly preferably, in combination B, the accelerator is DMP-30 from Dongguan Tuoxin Composite Materials Co., Ltd.

[0049] Preferably, in the combination B, the toughening agent is an amino-terminated liquid nitrile rubber. More preferably, the number average molecular weight of the amino-terminated liquid nitrile rubber is 3000-4000. Particularly preferably, in the combination B, the toughening agent of the present invention is provided by Huntsman 1300X21 ATBN model toughening agent.

[0050] Preferably, in combination B, the modified amine epoxy curing agent is an addition amine, which is the reaction product of an amine curing agent and an epoxy resin or an epoxy reactive diluent. Particularly preferably, the modified amine epoxy curing agent can be the TX1113 modified amine epoxy curing agent provided by Dongguan Tuoxin Composite Materials Co., Ltd. The inventors have discovered that in this preferred embodiment, the tile caulking agent provided by the present invention exhibits greater viscosity, compressive strength, and adhesive shear strength.

[0051] As mentioned above, the second aspect of the present invention provides a method for preparing a tile grout, which is carried out using the components of the composition described in the first aspect, comprising:

[0052] (1) Preparation of the first component and the second component:

[0053] Under stirring conditions, the components in combination A are first mixed to obtain a first component; and

[0054] Under stirring conditions, the components in combination B are mixed for a second time to obtain a second component;

[0055] (2) The first component and the second component are mixed and contacted to obtain the tile grout.

[0056] Preferably, in step (1), the operation of first mixing the components in combination A under stirring conditions includes:

[0057] (S11) performing a first stirring treatment on a bisphenol A epoxy resin and a hydrogenated bisphenol A epoxy resin to obtain a material S11;

[0058] (S12) subjecting the material S11 to a second stirring treatment with the nano-calcium carbonate in combination A, the defoaming agent in combination A, and the active diluent in combination A at a temperature of 40-50° C. to obtain material S12;

[0059] (S13) The material S12 is subjected to a third stirring process with the luminous powder in combination A to obtain the first component.

[0060] Preferably, in step (S11), the conditions of the first stirring treatment include: a stirring rate of 400-600 rpm.

[0061] Further preferably, in step (S12), the conditions of the second stirring treatment include: a stirring rate of 900-1000 rpm, a stirring time of 25-35 min, and a pressure ≥-0.09 MPa.

[0062] Preferably, in step (S13), the conditions of the third stirring treatment include: a stirring rate of 400-600 rpm, and a stirring time of 10-20 min.

[0063] Preferably, in step (2), the operation of performing a second mixing of the components in combination B under stirring conditions comprises:

[0064] (S21) At a temperature of 45-50° C., a modified amine epoxy curing agent, an accelerator, a toughening agent, a defoaming agent in combination B, and nano-calcium carbonate in combination B are subjected to a fourth stirring treatment to obtain material S21; the temperature T2 is 45-50° C.;

[0065] (S23) The material S21 is subjected to a fifth stirring treatment with a thixotropic agent, the luminous powder in combination B, and a pigment optionally contained in combination B to obtain the second component.

[0066] Preferably, in step (S21), the conditions of the fourth stirring treatment include: a stirring rate of 900-1000 rpm, a stirring time of 25-35 min, and a pressure ≥-0.09 MPa.

[0067] More preferably, in step (S22), the conditions of the fifth stirring treatment include: a stirring rate of 400-600 rpm, and a stirring time of 10-20 min.

[0068] As mentioned above, the third aspect of the present invention provides a tile grout prepared by the method described in the second aspect.

[0069] The present invention will be described in detail below by way of examples. In the following examples, unless otherwise specified, all instruments and raw materials used are commercially available.

[0070] Bisphenol A epoxy resin: purchased from Baling Petrochemical, trade name CYD-128;

[0071] Hydrogenated bisphenol A epoxy resin: purchased from Wuhan Jiufengyun New Materials Co., Ltd., trade name XY518;

[0072] Epoxy resin-1: The weight ratio of bisphenol A epoxy resin and hydrogenated bisphenol A epoxy resin is 3:1, and the epoxy equivalent weight is 188 g / mol;

[0073] Epoxy resin-2: The weight ratio of bisphenol A epoxy resin and hydrogenated bisphenol A epoxy resin is 1:1, and the epoxy equivalent weight is 188 g / mol;

[0074] Nano calcium carbonate: particles with an average volume diameter of 0.1 μm, purchased from Takehara Chemical, trade name NEOLIGHTSP;

[0075] Defoaming agent: purchased from Dongguan Tuoxin Composite Materials Co., Ltd., trade name TX6750;

[0076] Reactive diluent A: 1,6-hexanediol diglycidyl ether, purchased from Hubei Green Home Materials Technology Co., Ltd., trade name LS-622;

[0077] Active diluent B: 1,4-butanediol diglycidyl ether, purchased from Guangzhou Ruishi Biotechnology Co., Ltd., trade name RS-1422;

[0078] Luminous powder A: yellow-green luminous powder, with an average volume diameter of 30 μm, purchased from Foshan Juliang Optical Materials Co., Ltd.

[0079] Luminous powder B: blue-green luminous powder, with an average volume diameter of 48 μm, purchased from Foshan Juliang Optical Materials Co., Ltd.

[0080] Modified amine epoxy curing agent A: active hydrogen equivalent weight is 175, purchased from Dongguan Tuoxin Composite Materials Co., Ltd., trade name TX1113;

[0081] Modified amine epoxy curing agent B: active hydrogen equivalent weight is 168, purchased from Huntsman Aradur 5200 latent curing agent, trade name MDH;

[0082] Accelerator: 2,4,6-tris(dimethylaminomethyl)phenol, purchased from Dongguan Tuoxin Composite Materials Co., Ltd., trade name DMP-30;

[0083] Toughening agent: purchased from Huntsman Company, trade name 1300X21 ATBN;

[0084] Thixotropic agent: purchased from Dongguan Tuoxin Composite Materials Co., Ltd., trade name TX607;

[0085] Pigment: Noble silver powder, purchased from Jiangsu Belide New Materials Co., Ltd.

[0086] Vacuum degassing mixer: model ZYMC-350VS, purchased from Shenzhen Zhongyi Technology Co., Ltd.

[0087] Universal testing machine: Model CMT6000, purchased from Meters Industrial Systems (China) Co., Ltd.

[0088] Pull-out testing machine: Model LBY-VI, purchased from Beijing Tianyu Technology Co., Ltd.

[0089] Measuring balance: Model ME3002T, purchased from Mettler-Toledo.

[0090] The following test uses the provisions of the JCT 547-2017 ceramic tile adhesive standard to test shear bond strength.

[0091] The compressive strength was tested using the provisions of the JCT 1004-2017 ceramic tile grout standard.

[0092] The stain resistance was tested using the provisions of JGT 463-2014 Standard for Artificial Quartz Slabs for Architectural Decoration.

[0093] The afterglow brightness is tested using the provisions of GBT 24981.2-2020 Test method for rare earth long afterglow phosphors Part 2: Relative brightness.

[0094] Example 1

[0095] This example is used to illustrate the preparation method of the tile caulking agent of the present invention (partial parameters are shown in Table 1), comprising:

[0096] (1) Preparation of the first component and the second component:

[0097] Under stirring conditions, the components in combination A are first mixed to obtain a first component. The first mixing operation includes:

[0098] (S11) performing a first stirring process on the epoxy resin at a rotation speed of 500 rpm to obtain a material S11;

[0099] (S12) subjecting the material S11 to a second stirring treatment at 1000 rpm, −0.09 MPa, and temperature T1, with the active diluent in combination A, the defoaming agent in combination A, and the nano-calcium carbonate in combination A to obtain material S12;

[0100] (S13) The material S12 and the luminous powder in combination A are subjected to a third stirring process at a rotation speed of 500 rpm to obtain the first component.

[0101] Under stirring conditions, the components in combination B are subjected to a second mixing to obtain a second component. The second mixing operation includes:

[0102] (S21) performing a fourth stirring treatment on the modified amine epoxy curing agent, the accelerator, the toughening agent, the defoaming agent in combination B, and the nano-calcium carbonate in combination B at 1000 rpm, −0.09 MPa, and temperature T2 to obtain material S21;

[0103] (S23) The material S21 is subjected to a fifth stirring treatment at a rotation speed of 500 rpm with the thixotropic agent, the luminous powder in the combination B, and the pigment optionally contained in the combination B to obtain the second component.

[0104] (2) The first component and the second component are mixed and contacted to obtain the tile grout.

[0105] Unless otherwise specified, the remaining examples were carried out using the same process as Example 1, except that the formulations and process parameters used in each example were different. The formulations used are detailed in Table 1, and the process parameters used are detailed in Table 2.

[0106] Table 1

[0107]

[0108] Table 2

[0109] Example 1 Example 2 Example 3 First Mix Second stirring process T1 temperature / ℃ 50 40 50 Time / min 30 35 35 The third stirring treatment, time / min 15 20 20 Second Mix Fourth stirring process T2 temperature / ℃ 50 50 45 Time / min 30 35 25 Fifth stirring treatment, time / min 15 15 20

[0110] Example 4

[0111] This example was carried out by referring to the method of Example 1, except that during the preparation of the first component, an equal weight of epoxy resin-2 was used to replace epoxy resin-1 in Example 1. The remaining substances and amounts were the same as those in Example 1 to obtain a tile caulking agent.

[0112] Example 5

[0113] This example was carried out by referring to the method of Example 1, except that, in the preparation process of the first component, an equal weight of active diluent B was used to replace the active diluent A in Example 1. The remaining substances and amounts were the same as those in Example 1 to obtain a tile grout.

[0114] Comparative Example 1

[0115] This comparative example was carried out with reference to the method of Example 1, except that:

[0116] During the preparation of the first component, the amount of epoxy resin-1 in this comparative example was 70 g, and the amount of reactive diluent A was adjusted to 17 g (the total mass of the A combination was 100 g).

[0117] The amounts of the remaining substances are the same as those in Example 1 to obtain a tile caulking agent.

[0118] Comparative Example 2

[0119] This comparative example was carried out with reference to the method of Example 1, except that:

[0120] In the preparation process of the first component, the amount of nano calcium carbonate in this comparative example is 1 g, and the amount of epoxy resin is adjusted to 88 g (the total mass of the A combination is 100 g);

[0121] During the preparation of the second component, the amount of nano-calcium carbonate in this comparative example was 1 g, and the amount of the modified amine epoxy curing agent was adjusted to 84 g (the total mass of the B combination was 100 g).

[0122] The amounts of the remaining substances are the same as those in Example 1 to obtain a tile caulking agent.

[0123] Comparative Example 3

[0124] This comparative example was carried out with reference to the method of Example 1, except that:

[0125] During the preparation of the first component, no luminous powder was added in this comparative example, and the amount of epoxy resin-1 in combination A was adjusted to 89 g (the total mass of combination A was 100 g).

[0126] The amounts of the remaining substances are the same as those in Example 1 to obtain a tile caulking agent.

[0127] Comparative Example 4

[0128] This comparative example was carried out with reference to the method of Example 1, except that:

[0129] During the preparation of the second component, no luminous powder was added in this comparative example, and the amount of the modified amine epoxy curing agent in combination B was adjusted to 81 g (the total mass of combination B was 100 g).

[0130] The amounts of the remaining substances are the same as those in Example 1 to obtain a tile caulking agent.

[0131] Comparative Example 5

[0132] This comparative example was carried out with reference to the method of Example 1, except that:

[0133] During the preparation of the second component, the modified amine epoxy curing agent A in Example 1 was replaced by an equal weight of the modified amine epoxy curing agent B.

[0134] The remaining substances and amounts are the same as those in Example 1 to obtain a tile caulking agent.

[0135] Test Case

[0136] The shear bond strength, compressive strength, stain resistance and afterglow brightness of the tile grout prepared in the example were tested with reference to the provisions of CT 547-2017, JCT 1004-2017, JGT 463-2014 and GBT 24981.2-2020 standards. The experimental results are shown in Table 3 (Examples 1-6 and Comparative Examples 1-4 in the table are the tile grouts prepared respectively).

[0137] Table 3

[0138]

[0139]

[0140] It can be seen from the results in Table 3 that the tile caulking agent prepared by the present invention has the characteristics of shear bonding strength, compressive strength and high afterglow brightness.

[0141] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A raw material composition for tile caulking agent, characterized in that The composition contains combination A and combination B in a weight ratio of 1:0.8-1.2; Based on the total mass of the composition A, the composition A contains: 80-90wt% epoxy resin, 5-10wt% nano calcium carbonate, 1-3wt% defoaming agent, 1-10wt% active diluent, and 1-10wt% luminous powder; Based on the total mass of the B combination, the B combination contains: 70-80wt% of a modified amine epoxy curing agent, 5-10wt% of nano-calcium carbonate, 1-3wt% of a thixotropic agent, 1-3wt% of an accelerator, 1-10wt% of a toughening agent, 1-3wt% of a defoaming agent, 1-10wt% of a luminous powder, and 0-10wt% of a pigment; In the combination A, the epoxy resin is a combination of a bisphenol A epoxy resin and a hydrogenated bisphenol A epoxy resin, and the amounts of the bisphenol A epoxy resin and the hydrogenated bisphenol A epoxy resin are such that the epoxy equivalent of the epoxy resin in the combination A is 180-190 g / mol; In the combination B, the active hydrogen equivalent of the modified amine epoxy curing agent is 170-180 g / mol; In the combination A and the combination B, the average volume diameter of the nano-calcium carbonate particles is 0.01 μm-0.1 μm.

2. The composition according to claim 1, characterized in that In the combination A, the weight ratio of the bisphenol A epoxy resin to the hydrogenated bisphenol A epoxy resin in the epoxy resin is 2-3:1; And / or, in the combination A and the combination B, the luminous powder is each independently yellow-green luminous powder and / or blue-green luminous powder, and the average volume diameter of the particles of the luminous powder is ≤50 μm.

3. The composition according to claim 1 or 2, characterized in that In the combination A, the active diluent is at least one of 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, and polypropylene glycol diglycidyl ether.

4. The composition according to claim 1 or 2, characterized in that In the combination A, the reactive diluent is 1,6-hexanediol diglycidyl ether.

5. The composition according to claim 1 or 2, characterized in that In the combination B, the thixotropic agent is a polyamide solution; And / or, in the combination B, the accelerator is a tertiary amine accelerator; And / or, in the combination B, the toughening agent is amino-terminated liquid nitrile rubber.

6. A method for preparing a tile caulking agent, characterized in that: The method is carried out using the components of the composition according to any one of claims 1 to 5, comprising: (1) Preparation of the first component and the second component: Under stirring conditions, the components in combination A are first mixed to obtain a first component; and Under stirring conditions, the components in combination B are mixed for a second time to obtain a second component; (2) The first component and the second component are mixed and contacted to obtain the tile grout.

7. The method according to claim 6, characterized in that In step (1), the operation of first mixing the components in combination A under stirring conditions includes: (S11) performing a first stirring treatment on a bisphenol A epoxy resin and a hydrogenated bisphenol A epoxy resin to obtain a material S11; (S12) At temperature T1, the material S11 is subjected to a second stirring treatment with the active diluent in combination A, the defoaming agent in combination A, and the nano-calcium carbonate in combination A to obtain material S12; the temperature T1 is 40-50°C; (S13) The material S12 is subjected to a third stirring process with the luminous powder in combination A to obtain the first component.

8. The method according to claim 7, characterized in that In step (S11), the conditions of the first stirring treatment include: a stirring rate of 400-600 rpm; And / or, in step (S12), the conditions of the second stirring treatment include: a stirring rate of 900-1000 rpm, a stirring time of 25-35 min, and a pressure ≥-0.09 MPa; And / or, in step (S13), the conditions of the third stirring treatment include: a stirring rate of 400-600 rpm, and a stirring time of 10-20 min.

9. The method according to claim 6, characterized in that In step (1), the operation of performing a second mixing of the components in combination B under stirring conditions includes: (S21) At a temperature of 45-50° C., the modified amine epoxy curing agent, the accelerator, the toughening agent, the defoaming agent in combination B, and the nano-calcium carbonate in combination B are subjected to a fourth stirring treatment to obtain material S21; the temperature T2 is 45-50° C.; (S22) The material S21 is subjected to a fifth stirring process with a thixotropic agent, the luminous powder in the combination B, and a pigment optionally contained in the combination B to obtain the second component.

10. The method according to claim 9, characterized in that In step (S21), the conditions of the fourth stirring treatment include: a stirring rate of 900-1000 rpm, a stirring time of 25-35 min, and a pressure ≥-0.09 MPa; And / or, in step (S22), the conditions of the fifth stirring treatment include: a stirring rate of 400-600 rpm, and a stirring time of 10-20 min.

11. A tile grout prepared by the method according to any one of claims 6 to 10.

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