CN114804787B - High-adhesion high-weather-resistance ceramic tile adhesive mortar and preparation method thereof - Google Patents

Abstract

The invention discloses a ceramic tile adhesive mortar with high adhesion and high weather resistance and a preparation method thereof, and relates to the technical field of building materials. The high-adhesion and high-weather-resistant ceramic tile adhesive mortar disclosed by the present invention is composed of the following raw materials in parts by weight: 350-450 parts of Portland cement, 350-450 parts of light coarse sand, 150-250 parts of light fine sand, 1-3 parts of cellulose fiber, 7-10 parts of rubber powder, 6-10 parts of polyoxyethylene alkylphenol ether, 15-20 parts of silane-modified polyurethane resin, 3-5 parts of crosslinking agent, and 1-3 parts of water reducer 6 parts and 150-250 parts of water; the light coarse sand is 70-100 mesh high-temperature sintered slag; the light fine sand is 40-70 mesh high-temperature sintered slag. The tile bonding mortar provided by the invention is simple and easy to operate, has easy-to-obtain raw materials, is energy-saving and environment-friendly; has high bonding strength, bonding durability and mechanical strength, and also has excellent weather resistance, water resistance, tear resistance and slip resistance, is easy to construct, and prolongs the application life of ceramic tiles.

Description

A kind of ceramic tile bonding mortar with high adhesion and high weather resistance and preparation method thereof

technical field

The invention belongs to the technical field of building materials, and in particular relates to a tile adhesive mortar with high adhesion and high weather resistance and a preparation method thereof.

Background technique

Tile adhesive mortar, commonly known as tile adhesive, is one of the main types of dry-mix mortar. It can be divided into indoor and outdoor products. Because of its high bonding strength, it is mainly used to paste various wall tiles, floor tiles, stone and other decorative materials. With the development of ceramic tile application requirements, the demand for vitrified tiles with low water absorption and large-size ceramic sheets is increasing. The development of high-performance adhesive mortar suitable for laying these tiles is an urgent need in the market.

At present, ceramic tiles are mainly external wall tiles such as full-body tiles, glazed tiles, and antique tiles. The tiles are small in size and medium in water absorption, but there are also many projects that use vitrified tiles, stone, and ceramic thin plates. The existing cement mortar used to paste exterior wall tiles has not low bonding strength for medium and high water absorption tiles, but because it is used in an outdoor environment, it is affected by environmental conditions such as wind, sun, rain, and temperature changes. The tile bonding mortar is easily corroded, degumming, loosening, etc. The tile adhesives on the market now have a short opening time, poor water retention, and poor post-adhesive strength of the tile adhesive, which will also lead to defects such as weak bonding, hollowing, cracking, falling off, and unstable mortar performance.

At present, the bonding mortar between tiles and the ground or wall is mixed on site. The tile bonding mortar is configured on site to be painted on the soaked tiles, and then mechanically tapped to ensure that the tiles and the wall are bonded and on the same plane. Due to the poor flow resistance of the existing tile bonding mortar, when pasting vertical components such as walls, the tiling must start from the low end, and a locator is required between the tiles to achieve neat bonding. The ratio of the components of the mortar in this way is difficult to control and the viscosity is uneven, resulting in poor adhesion of the tiles, prone to hollowing, tile bonding sinking, and uneven bonding.

The main raw materials of existing tile bonding mortar at home and abroad include ordinary Portland cement, various aggregates, fillers, and appropriate additives will be selected to improve the performance of the mortar. Due to the use of additives, the mortar can achieve thin-layer construction, and the bonding strength of the mortar has been greatly improved to meet the requirements of different tiles. In order to meet the ever-increasing quality requirements, a high-performance tile bonding mortar was developed that not only has higher bond strength, but also meets special requirements for open time, slip resistance, flexibility, weather resistance, durability, etc.

Contents of the invention

The main purpose of the present invention is to provide a ceramic tile bonding mortar, the preparation method of which is simple and easy to operate, the raw materials are easy to obtain, energy saving and environmental protection; it has high bonding strength, bonding durability and mechanical strength, and also has excellent weather resistance, water resistance, tear resistance and slip resistance, is easy to construct, and prolongs the application life of ceramic tiles.

In order to achieve the purpose of the present invention, the present invention provides a tile bonding mortar with high adhesion and high weather resistance, which is composed of the following raw materials in parts by weight: 350-450 parts of Portland cement, 350-450 parts of light coarse sand, 150-250 parts of light fine sand, 1-3 parts of cellulose fiber, 7-10 parts of rubber powder, 6-10 parts of polyoxyethylene alkylphenol ether, 15-20 parts of silane modified polyurethane resin, 3-5 parts of crosslinking agent, 1-3 parts of water reducing agent 6 parts and 150-250 parts of water.

Preferably, both the light coarse sand and the light fine sand are processed by sintering slag at a temperature of 1300°C in a thermal power plant. The existing tile bonding mortar needs to add a large amount of natural sand, and natural sand is a non-renewable resource, and the state has explicitly prohibited the mining of natural sand in some river sections, but with the increasing development of infrastructure construction, natural sand resources are increasingly scarce, and it is urgent to find new materials to replace natural sand. Thermal power plant slag is the waste slag produced after high-temperature sintering of coal mines. It has a very large reserve, occupies land and pollutes the environment. The light sand (light coarse sand and light fine sand) used in the present invention is processed by high-temperature sintering slag at 1300°C in a thermal power plant. The main components are: Fe ₂ O ₃ , Al ₂ O ₃ , SiO ₂ , CaO, MgO, etc. It has the performance and potential activity of sound insulation, heat insulation, and water retention brought by the porous structure, and can increase the later strength (formation of binary and ternary cementitious materials) and other advantages. The bulk density of the preferred lightweight sand in the present invention is a lightweight material between vitrified microbeads and river sand, which can effectively reduce the building weight and increase the service life of the building.

Preferably, the light coarse sand is 70-100 mesh slag; the light fine sand is 40-70 mesh slag. The present invention adopts light coarse sand and light fine sand of appropriate particle size for proportioning, which effectively reduces the self-shrinkage of tile bonding mortar, reduces the porosity inside the mortar, and makes the inside more compact; the porous structure of the light sand makes it easy to combine with other components of the mortar to form binary and ternary gel materials, etc., thereby further improving the bonding strength between the components of the mortar, making the present invention have excellent water retention, and simultaneously improving the mechanical strength and tear resistance of the present invention.

The cellulose fiber contains a unique cavity, which can store some free water in the early stage of hydration, delay the generation of hydration heat peak, reduce the temperature gradient, reduce the evaporation of water, thereby greatly reducing the risk of cracking due to temperature drop and other shrinkage in the early stage of the mortar; with the humidity of the mortar, it promotes the release of free water in the fiber cavity, promotes the hydration of the mortar, greatly reduces the porosity of the mortar, and improves the compactness of the mortar. The durability is significantly improved; the huge specific surface area of the fiber also improves the mechanical strength and toughness of the mortar.

The addition of polyoxyethylene alkylphenol ether improves the wettability between the mortar and the ceramic matrix, thereby improving the bonding force and strength of the mortar and the ceramic tile.

Further, the preparation method of the silane-modified polyurethane resin is as follows: mix vinyltrimethoxysilane and toluyl peroxide, stir at room temperature for 30-45 minutes, then add 2-imidazolidinone and polyurethane emulsion, heat up to 50-60° C., react at constant temperature for 2-4 hours, and naturally cool to room temperature to obtain the silane-modified polyurethane resin.

The silane-modified polyurethane resin of the present invention is worth using vinyltrimethoxysilane-modified polyurethane emulsion. Vinyltrimethoxysilane reacts with polyurethane under the action of initiator toluyl peroxide, and carries out chain extension reaction through 2-imidazolidinone, so that after polyurethane is modified by chain extension and crosslinking, the molecular weight of polyurethane increases, the free movement of molecular chains is restricted, and its mechanical strength increases; due to the increase in the degree of crosslinking in the system, the chain length between crosslinking points becomes smaller, and water molecules are difficult to penetrate or ooze out, thereby improving the water resistance of the present invention and also improving the water retention of mortar; after polyurethane emulsion undergoes chain extension and crosslinking reaction , forming a cross-linked network structure, making the mortar of the present invention easy to solidify, reducing the molding time of the mortar, and reducing the defect rate caused by construction. Vinyltrimethoxysilane is a chain structure connected by Si-O bonds. Silicon atoms are mainly connected to methyl groups. The main chain contains unsaturated groups. The intermolecular force is small, and the molecules are in a helical structure. The methyl groups are arranged outward and can rotate freely, making siloxane products have better heat resistance, weather resistance, electrical insulation, and chemical stability. Therefore, introducing it into the polyurethane structure greatly improves the weather resistance and mechanical strength of silane-modified polyurethane resins. The silane-modified polyurethane resin is added into the mortar and used in combination with other preferred component types and dosages to significantly improve the weather resistance, water resistance and strength of the ceramic tile bonding mortar.

Further, the mass ratio of the toluyl peroxide to the polyurethane emulsion is (0.01-0.03):1; the mass ratio of the vinyltrimethoxysilane to the polyurethane emulsion is (0.12-0.18):1; the mass ratio of the 2-imidazolidinone to the polyurethane emulsion is (0.05-0.1):1. The optimal ratio of the raw materials of the silane-modified polyurethane resin enables the silane-modified polyurethane resin to fully exert its required properties. If the amount of vinyltrimethoxysilane is too much, the compressive strength of the mortar of the present invention will easily decrease and become brittle. If the amount of vinyltrimethoxysilane is too small, the water resistance and water retention of the mortar of the present invention will have little effect, and the compressive strength and weather resistance will not be significantly improved.

Further, the rubber powder is compounded by polyhydroxyethyl methacrylate and vinyl acetate/ethylene copolymer.

Vinyl acetate/ethylene copolymer has a good effect on improving the workability, water retention, and bonding strength of mortar. It is mainly because after being added to mortar, it immediately disperses and gathers in the water-rich area. After dehydration and film formation, it fills the defects and pores in the mortar, and makes the hydration products of the mortar and the aggregates cement each other to form an interpenetrating network of polymers, which improves the crack resistance of the mortar. However, the vinyl acetate/ethylene copolymer reduces the brittleness of the mortar and prolongs the setting time. The present invention uses poly(hydroxyethyl methacrylate) to compound with vinyl acetate/ethylene copolymer. The addition of poly(hydroxyethyl methacrylate) makes it react with vinyl acetate/ethylene copolymer and cooperate with vinyl acetate/ethylene copolymer to further improve the bonding strength of the mortar and increase the elasticity of the compound. Adding the compound rubber powder to the mortar improves the toughness of the mortar, improves the brittleness, shortens the setting time, further improves the bending strength, mechanical strength and ductility of the mortar, and ensures that the mortar has excellent workability and water retention. sex.

Further, the preparation method of the rubber powder is as follows: adding polyhydroxyethyl methacrylate to an appropriate amount of distilled water to dissolve, then adding vinyl acetate/ethylene copolymer, stirring and reacting at room temperature for 2-3 hours, and drying to obtain the rubber powder.

Further, the mass ratio of the polyhydroxyethyl methacrylate to the vinyl acetate/ethylene copolymer is 1:(2-3). In the composite rubber powder, if the addition amount of polyhydroxyethyl methacrylate is too much, the setting time of the mortar will be shorter, the mortar construction will be difficult, the dispersion will be poor, and it will be easy to agglomerate; if the addition amount is too small, the bonding strength and bending strength of the mortar will be reduced.

Further, the cross-linking agent is one or more of sorbitol, D-mannitol or galactitol.

Further, the water reducer is a polycarboxylate high-efficiency water reducer.

The present invention also provides a method for preparing a high-bonding and high-weather-resistance ceramic tile bonding mortar, which specifically includes the following steps:

(1) each raw material component is taken by weight;

(2) adding the rubber powder into water to dissolve, then adding cellulose fiber and silane-modified polyurethane resin, and stirring for 2-3min to obtain solution A;

(3) Add Portland cement, light coarse sand, and light fine sand to the mixer and dry mix for 3-5 minutes, then add solution A and stir for 2-3 minutes to obtain a mixture;

(4) Add polyoxyethylene alkylphenol ether and water reducing agent to the above mixture in sequence, stir for 1-2 minutes, then add cross-linking agent, and stir for 10-15 minutes to obtain the ceramic tile bonding mortar.

The present invention has obtained following beneficial effect:

1. The preparation method of the ceramic tile adhesive mortar of the present invention is simple and easy to operate, the raw materials are easy to obtain, and the cost is low. The recycling and reuse of industrial waste is used to turn waste into preservation, realize sustainable development and utilization of resources, and reduce production costs.

2. The silane-modified polyurethane resin, rubber powder, and cellulose fiber in the present invention can penetrate into the surface layer of the tile veneer through the interaction between the cross-linking agent and polyoxyethylene alkylphenol ether, and form a layer of dense network structure with other components of the mortar, with high strength and long-lasting adhesion, so that the ceramic tile is not easy to fall off and has excellent waterproof performance.

3. The ceramic tile bonding mortar of the present invention significantly improves the mechanical strength, water resistance, weather resistance and bonding strength of the mortar through the addition of silane-modified polyurethane resin, and reduces the setting time of the mortar; the addition of rubber powder improves the workability, water retention and bonding strength of the mortar, and has better toughness and better setting time; the addition of cellulose fibers significantly improves the crack resistance, weather resistance and mechanical strength of the mortar.

4. The present invention adopts light coarse sand and light fine sand with appropriate particle size and proportion, which effectively reduces the self-shrinkage of the mortar, reduces the porosity inside the mortar, makes the inside more dense, and then reduces the cracks inside the mortar, improves the anti-crack and anti-seepage performance and compressive strength of the concrete, also reduces the weight of the mortar, and improves the sag resistance of the present invention.

5. The present invention reduces the self-shrinkage of the mortar, refines the pore structure, improves the fluidity of the mortar, and further improves the bonding strength, mechanical strength and bonding durability of the present invention through the compounding of silicate and light coarse sand, light fine sand, cellulose fiber, silane-modified polyurethane resin, rubber powder and other raw materials.

6. The ceramic tile bonding mortar of the present invention has long-lasting bonding force, high bonding strength and mechanical strength, and also has excellent weather resistance, water resistance, tear resistance and slip resistance, is easy to construct, greatly prolongs the application life of ceramic tiles, and has broad application prospects.

Detailed ways

The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The polyurethane emulsion adopted in the following examples of the present invention is NeoRez R961 of DSM Dimans, and the solid content in the polyurethane emulsion is 34%;

Vinyl acetate/ethylene copolymer is German Wacker latex powder 328;

The cellulose fiber is UF500 produced by Changzhou Lirdtong New Material Technology Co., Ltd.;

Polycarboxylate superplasticizer is provided by Shandong Boke Chemical Co., Ltd.;

Both the light coarse sand and the light fine sand are processed by sintering slag at a temperature of 1300°C in a thermal power plant; the light coarse sand is 70-100 mesh slag; the light fine sand is 40-70 mesh slag. Both the light coarse sand and the light fine sand in the examples are provided by Hunan Xineng Trading Co., Ltd.

The Portland cement used in the embodiment of the present invention is ordinary Portland cement P.O42.5.

Example 1

The preparation method of a high-bonding and high-weather-resistance ceramic tile bonding mortar is as follows: 7 parts of rubber powder are added to 150 parts of water to dissolve, then 1 part of cellulose fiber and 15 parts of silane-modified polyurethane resin are added, and stirred for 2 minutes to obtain solution A; then 350 parts of Portland cement, 350 parts of light coarse sand, and 150 parts of light fine sand are added to the mixer for dry mixing for 3 minutes, and then the above solution A is added and stirred for 3 minutes to obtain a mixture; Agents were added to the above mixture in turn, stirred for 2 minutes, added sorbitol, stirred for 15 minutes, and obtained.

The preparation method of the above-mentioned silane-modified polyurethane resin is as follows: mix 12 parts of vinyltrimethoxysilane and 1 part of toluyl peroxide, stir at room temperature for 30 minutes, then add 5 parts of 2-imidazolidinone and 100 parts of polyurethane emulsion, raise the temperature to 50°C, react at constant temperature for 4 hours, and naturally cool to room temperature to obtain the product.

The preparation method of the above-mentioned rubber powder is as follows: adding polyhydroxyethyl methacrylate to an appropriate amount of distilled water to dissolve, then adding vinyl acetate/ethylene copolymer, stirring and reacting at room temperature for 2-3 hours, and drying to obtain the product. The mass ratio of the polyhydroxyethyl methacrylate to the vinyl acetate/ethylene copolymer is 1:2.

Example 2

The preparation method of a high-adhesion and high-weather-resistance ceramic tile bonding mortar is as follows: 10 parts of rubber powder are added to 250 parts of water to dissolve, then 3 parts of cellulose fiber and 20 parts of silane-modified polyurethane resin are added, and stirred for 3 minutes to obtain solution A; then 450 parts of Portland cement, 450 parts of light coarse sand, and 250 parts of light fine sand are added to the mixer and dry-mixed for 5 minutes, and then the above solution A is added and stirred for 2 minutes to obtain a mixture; 10 parts of polyoxyethylene alkylphenol ether, 6 parts of polycarboxylic acid Add the water reducer to the above mixture in turn, stir for 2 minutes, add D-mannitol, stir for 10 minutes, and you get it.

The preparation method of the above-mentioned silane-modified polyurethane resin is as follows: mix 18 parts of vinyltrimethoxysilane and 3 parts of toluyl peroxide, stir at room temperature for 45 minutes, then add 10 parts of 2-imidazolidinone and 100 parts of polyurethane emulsion, raise the temperature to 60°C, react at constant temperature for 2 hours, and naturally cool to room temperature to obtain the product.

The preparation method of the above-mentioned rubber powder is as follows: adding polyhydroxyethyl methacrylate to an appropriate amount of distilled water to dissolve, then adding vinyl acetate/ethylene copolymer, stirring and reacting at room temperature for 2-3 hours, and drying to obtain the product. The mass ratio of the polyhydroxyethyl methacrylate to the vinyl acetate/ethylene copolymer is 1:3.

Example 3

The preparation method of a high-bonding and high-weather-resistance ceramic tile bonding mortar is as follows: 8 parts of rubber powder are added to 200 parts of water to dissolve, then 3 parts of cellulose fiber and 15 parts of silane-modified polyurethane resin are added, and stirred for 3 minutes to obtain solution A; then 380 parts of Portland cement, 420 parts of light coarse sand, and 210 parts of light fine sand are added to the mixer and dry-mixed for 5 minutes, and then the above solution A is added and stirred for 3 minutes to obtain a mixture; The agent was added to the above mixture in turn, stirred for 2 minutes, added galactitol, stirred for 15 minutes, and obtained.

The preparation method of the above-mentioned silane-modified polyurethane resin is as follows: mix 15 parts of vinyltrimethoxysilane and 2 parts of toluyl peroxide, stir at room temperature for 45 minutes, then add 8 parts of 2-imidazolidinone and 100 parts of polyurethane emulsion, raise the temperature to 60°C, react at constant temperature for 3 hours, and naturally cool to room temperature to obtain the product.

The preparation method of the above-mentioned rubber powder is as follows: adding polyhydroxyethyl methacrylate to an appropriate amount of distilled water to dissolve, then adding vinyl acetate/ethylene copolymer, stirring and reacting at room temperature for 2-3 hours, and drying to obtain the product. The mass ratio of the polyhydroxyethyl methacrylate to the vinyl acetate/ethylene copolymer is 1:2.

Example 4

The preparation method of a high-bonding and high-weather-resistance ceramic tile bonding mortar is as follows: add 8 parts of rubber powder to 200 parts of water to dissolve, then add 2 parts of cellulose fiber and 17 parts of silane-modified polyurethane resin, and stir for 3 minutes to obtain solution A; then add 400 parts of Portland cement, 400 parts of light coarse sand, and 200 parts of light fine sand into the mixer and dry mix for 5 minutes, then add the above solution A and stir for 3 minutes to obtain a mixture; Agents were added to the above mixture in turn, stirred for 2 minutes, added sorbitol, stirred for 15 minutes, and obtained.

The preparation method of the above-mentioned silane-modified polyurethane resin is the same as that in Example 3, refer to Example 3 for details.

The preparation method of the above-mentioned rubber powder is the same as in Example 3, specifically refer to Example 3.

Comparative example 1

The raw material components, proportioning and preparation method of the tile bonding mortar in this comparative example 1 are the same as those in Example 4, the difference is that in this comparative example 1, 70-100 mesh quartz sand is used to replace the light coarse sand used in the present invention, and 40-70 mesh quartz sand is used to replace the light fine sand used in the present invention.

Comparative example 2

The raw material components, proportioning and preparation method of the ceramic tile bonding mortar in this comparative example 2 are the same as those in Example 4, the difference is that the rubber powder in this comparative example 2 is a vinyl acetate/ethylene copolymer.

Comparative example 3

The raw material components, proportions and preparation method of the tile bonding mortar in this Comparative Example 3 are the same as those in Example 4, the difference is that no silane-modified polyurethane resin is added in this Comparative Example 3.

Comparative example 4

The raw material components, proportioning and preparation method of the tile bonding mortar in this Comparative Example 4 are the same as those in Example 4, the difference is that in this Comparative Example 4, polyurethane emulsion is used to replace the silane-modified polyurethane resin used in the present invention.

Comparative example 5

The raw material components, proportions and preparation method of the tile bonding mortar in this Comparative Example 5 are the same as those in Example 4, the difference is that no polyoxyethylene alkylphenol ether is added in this Comparative Example 5.

The tile bonding mortar prepared according to Examples 1-4 and Comparative Examples 1-5 was tested according to the standards of JC/T547-2017 and JC/T984-2011, and the test results are shown in Table 1 below.

Table 1 The performance test results of tile bonding mortar

It can be seen from the test results in the above table 1 that the ceramic tile adhesive mortar of the present invention has excellent tensile adhesive strength, and after soaking in water, aging, freezing and thawing, and air treatment, it still has relatively high tensile adhesive strength, that is, the present invention has excellent weather resistance, water resistance, crack resistance, etc. It can also be seen from Table 1 that after the addition of silane-modified polyurethane resin in the present invention, the bonding strength, weather resistance, water resistance, and slip resistance of the present invention are significantly improved, thereby prolonging the bonding durability of the present invention; the rubber powder of the present invention uses polyhydroxyethyl methacrylate and vinyl acetate/ethylene copolymer to carry out the proportioning, which can obviously improve the slip resistance of the present invention, and in the experimental process, the setting time of the present invention is obviously shortened; weatherability and water resistance. The present invention uses lightweight sand instead of quartz sand, which has a certain positive impact on the strength and weather resistance of the bonded mortar, and correspondingly reduces production costs, reduces environmental pollution, realizes renewable utilization of resources, and conforms to the existing concept of environmental protection and energy saving.

The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (8)

1. The high-adhesion high-weather-resistance ceramic tile adhesive mortar is characterized by comprising the following raw materials in parts by weight: 350-450 parts of silicate cement, 350-450 parts of light coarse sand, 150-250 parts of light fine sand, 1-3 parts of cellulose fiber, 7-10 parts of rubber powder, 6-10 parts of polyoxyethylene alkylphenol ether, 15-20 parts of silane modified polyurethane resin, 3-5 parts of cross-linking agent, 1-6 parts of water reducer and 150-250 parts of water;

the light coarse sand and the light fine sand are processed by using high-temperature sintering slag at 1300 ℃ of a thermal power plant;

the light coarse sand is slag with 70-100 meshes; the light fine sand is slag with 40-70 meshes;

the preparation method of the silane modified polyurethane resin comprises the following steps: mixing vinyl trimethoxy silane and toluoyl peroxide, stirring for 30-45min at normal temperature, adding 2-imidazolidone and polyurethane emulsion, heating to 50-60 ℃, reacting at constant temperature for 2-4h, and naturally cooling to room temperature to obtain the silane modified polyurethane resin.

2. The high-adhesion and high-weatherability tile adhesive mortar according to claim 1, wherein the mass ratio of the toluoyl peroxide to the polyurethane emulsion is (0.01-0.03): 1, a step of; the mass ratio of the vinyl trimethoxy silane to the polyurethane emulsion is (0.12-0.18): 1, a step of; the mass ratio of the 2-imidazolidinone to the polyurethane emulsion is (0.05-0.1): 1.

3. the high adhesion and high weatherability tile adhesive mortar of claim 1, wherein the glue powder is compounded from poly (hydroxyethyl methacrylate) and vinyl acetate/ethylene copolymer.

4. The high-adhesion and high-weatherability tile adhesive mortar according to claim 3, wherein the preparation method of the rubber powder is as follows: adding the polyhydroxyethyl methacrylate into a proper amount of distilled water for dissolution, then adding the vinyl acetate/ethylene copolymer, stirring at normal temperature for reaction for 2-3h, and drying to obtain the rubber powder.

5. The high adhesion and high weatherability tile adhesive mortar of claim 4, wherein the mass ratio of the polyhydroxyethyl methacrylate to the vinyl acetate/ethylene copolymer is 1: (2-3).

6. The high-adhesion and high-weatherability tile adhesive mortar according to claim 1, wherein the crosslinking agent is one or more of sorbitol, D-mannitol or galactitol.

7. The high-adhesion and high-weather-resistance tile adhesive mortar according to claim 1, wherein the water reducing agent is a polycarboxylic acid-based high-efficiency water reducing agent.

8. The method for preparing the high-adhesion and high-weather-resistance ceramic tile adhesive mortar according to any one of claims 1 to 7, comprising the following steps:

(1) Weighing the raw material components according to parts by weight;

(2) Adding the rubber powder into water for dissolution, then adding cellulose fibers and silane modified polyurethane resin, and stirring for 2-3min to obtain a solution A;

(3) Adding Portland cement, light coarse sand and light fine sand into a stirrer, stirring for 3-5min, adding the solution A, and stirring for 2-3min to obtain a mixture;

(4) Sequentially adding polyoxyethylene alkylphenol ether and a water reducer into the mixture, stirring for 1-2min, adding a cross-linking agent, and stirring for 10-15min to obtain the tile adhesive mortar.