Special cleaning agent for silane modified polyether sealant as well as preparation and construction methods of special cleaning agent

Abstract

The invention provides a special cleaning agent for a silane modified polyether sealant as well as a preparation method and a construction method thereof, and belongs to the field of sealant. The special cleaning agent for the silane modified polyether sealant comprises 50-75% of a cleaning agent, 20-40% of water and 1-2% of a catalyst, the cleaning agent is a solvent with a good cleaning effect on ethers; the catalyst can be dissolved in water, can stably exist in the cleaning agent, and can catalyze the curing reaction of the silane modified polyether sealant. The problem of application of the silane modified polyether sealant to mosaic tiles and artistic modeling is solved, and the problems that construction is difficult, the deep curing time of the silane modified polyether sealant is too long, the construction period is prolonged and the like are solved through construction of a special cleaning agent.

Description

Technical Field

[0001] The present invention belongs to the field of caulking agents, and particularly relates to a special cleaning agent for silane-modified polyether caulking agents, its preparation and construction method. Background Art

[0002] Common mosaic tiles generally have a very small volume. Coupled with their rich colors, they will appear very flexible during decoration and pasting. They can be assembled into any pattern according to our needs, and at the same time, they can produce a gradient effect, which is a characteristic that other tiles do not have. Therefore, they are commonly used in some small space areas such as bathrooms, kitchens, and balconies in home decoration, and can also be used as end-view walls for decoration. For example, TV walls, sofa background walls, and end-view walls at the end of corridors can all be decorated with mosaics; however, mosaic tiles have many and wide joints. Construction is extremely difficult through traditional caulking and glue scraping methods. At the same time, dense cross joints are extremely likely to cause depressions during the caulking process, resulting in poor construction aesthetics.

[0003] The surface active groups of the silane-modified polyether caulking agent react with moisture under the action of a catalyst to form a surface film-forming substance with a cross-linked network structure. The curing reaction proceeds from the outside to the inside. The already cured glue film on the surface will prevent water molecules in the air from further penetrating into the interior of the caulking agent to react with the uncured resin. Therefore, the deep curing speed of the silane-modified polyether caulking agent is relatively slow. In mosaic tiles with a joint width of 3 mm, the silane-modified polyether caulking agent with a slow deep curing speed will significantly delay the construction period. The curing equation of the silane-modified polyether is as follows:

[0004]

[0005] In addition, art-shaped tiles have various shapes and usually have irregular joints. Pressing glue at irregular joints is difficult, and appearance defects such as insufficient flatness are likely to occur at the joints due to scraping problems.

[0006] Currently, water-based epoxy colored sand caulking agents are usually used for construction on mosaic tiles, art-shaped tiles, etc. through scraping and water washing; however, epoxy colored sand caulking agents are not good in terms of yellowing resistance and weather resistance. They are prone to yellowing when used outdoors and are prone to yellowing and cracking when used in floor heating, losing their use efficiency and being difficult to meet market demands. In addition, there are no reports on solutions to the related problems of silane-modified polyether caulking agents in the prior art. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a special cleaning agent for silane-modified polyether joint sealant, its preparation method and construction method. The special cleaning agent for silane-modified polyether joint sealant of the present invention solves the problems in the application of silane-modified polyether sealant on mosaic tiles and artistic shapes. Through the construction of the special cleaning agent, the construction difficulties are solved, as well as the problems such as the relatively long deep curing time of silane-modified polyether joint sealant and the extended construction period.

[0008] To solve the above problems, the present invention is realized through the following technical solutions:

[0009] The first object of the present invention is:

[0010] To provide a special cleaning agent for silane-modified polyether joint sealant, which comprises the following components in mass percentage:

[0011] Cleaning agent 50 - 75%, water 20% - 40%, catalyst 1% - 2%;

[0012] The sum of all components is 100%;

[0013] The cleaning agent is a solvent with good cleaning effect on ethers;

[0014] The catalyst is a catalyst that is soluble in water, can stably exist in the cleaning agent, and can catalyze the curing reaction of silane-modified polyether joint sealant.

[0015] The further optimization of the special cleaning agent for silane-modified polyether joint sealant of the present invention is:

[0016] The cleaning agent is one or a combination of ethanol, ethylene glycol, N-methylpyrrolidone, N-ethylpyrrolidone, dipropylene glycol methyl ether.

[0017] The further optimization of the special cleaning agent for silane-modified polyether joint sealant of the present invention is:

[0018] The catalyst is one or a combination of triethylenediamine and 1,8-diazabicyclo[5.4.0]undec-7-ene.

[0019] The further optimization of the special cleaning agent for silane-modified polyether joint sealant of the present invention is:

[0020] The water is one of pure water, purified water, deionized water.

[0021] The further optimization of the special cleaning agent for silane-modified polyether joint sealant of the present invention is:

[0022] The special cleaning agent for silane-modified polyether joint sealant is adapted to the silane-modified polyether joint sealant mainly composed of silane-modified polyether developed by α-hybrid capping, and has relatively poor effect on organotin-catalyzed silane-modified polyether.

[0023] The second object of the present invention is as follows:

[0024] To provide a preparation method for a special cleaning agent for silane-modified polyether joint sealants described above, which comprises the following preparation steps:

[0025] S1. Add water into a mixing kettle;

[0026] S2. Slowly add the cleaning agent into the mixing kettle through a glass rod or a guiding rod, while stirring, and stir for 30 minutes;

[0027] S3. During the process of partial solvent in the cleaning agent being miscible with water, a large amount of heat will be released. Pay attention to the temperature change. When the temperature is higher than 40°C, suspend the addition. When the temperature drops to 30°C, continue the feeding;

[0028] S4. Accurately drop the catalyst into the mixing kettle and stir for 15 minutes;

[0029] S5. When the above-mentioned components are completely dissolved and in a clear and stable state, it can be filled and discharged to prepare a special cleaning agent for silane-modified polyether joint sealants.

[0030] The third object of the present invention is as follows:

[0031] To provide a construction method for a special cleaning agent for silane-modified polyether joint sealants described above, which comprises the following preparation steps:

[0032] S1. Clean the gap, clean the tile gap, leaving a depth of 3 - 5 mm is sufficient, and keep the gap dry; (The gap is the gap left when laying mosaic tiles, and the depth of the gap is the thickness of the mosaic tiles. Generally, the thickness of mosaic tiles on the market is 3 mm and will not exceed 5 mm.)

[0033] S2. Fill the gap, take an appropriate amount of silane-modified polyether joint sealant with a scraper and fill it into the gap bit by bit, and the scraping of the gap can be carried out simultaneously;

[0034] The excess joint sealant scraped off can be reused in other gaps as long as it is not cured, without any restrictions;

[0035] Scraping the gap can scrape off the excess colored sand on the tile surface and also compact the colored sand in the gap, saving a lot of effort during the process of scrubbing the tile, and the colored sand can also be in full contact with the gap;

[0036] S3. Carry out scrubbing after the scraping of the gap is completed; The scrubbing includes the following steps:

[0037] Dip a sponge in the special cleaning agent for silane-modified polyether joint sealants and scrub the floor, scrubbing the tiles in a circular motion until the silane-modified polyether joint sealant on the tile surface is scrubbed clean;

[0038] Scrubbing the tiles in a circular motion can prevent the colored sand in the gaps from being carried out; during the scrubbing process, change the water and wash the sponge frequently until the sealant on the tile surface is scrubbed clean.

[0039] For traditional epoxy colored sand sealants, during the construction process, the epoxy A and B components must be mixed. Since the sealant workers at the construction site are generally not professional chemists and usually do not have professional mixing equipment, the construction of water-based epoxy colored sand is often manually mixed by the sealant workers, which may cause problems such as uneven mixing of the A and B components, resulting in a series of problems such as non-curing and soft hardness of the sealant. Compared with the traditional construction method, the present invention reduces the mixing process of the epoxy sealant A and B components and avoids various problems caused by uneven mixing of the epoxy sealant A and B components.

[0040] The special cleaning agent for silane-modified polyether sealant of the present invention has the following advantages:

[0041] 1. The present invention aims at the silane-modified polyether sealant. Through the construction method of scraping + cleaning with a special cleaning agent, the surface of the mosaic tiles is flat after construction, and there is no sealant residue on the tiles, perfectly solving the construction problem.

[0042] 2. The pure water and catalyst necessary for curing brought in by the cleaning agent will significantly accelerate the deep curing speed, and the preliminary curing reaction can be completed in 24h, without affecting the subsequent construction progress.

[0043] The special cleaning agent for silane-modified polyether sealant of the present invention has the following technical characteristics:

[0044] 1. Technically, solvents that are miscible with water in any proportion, such as N-methylpyrrolidone, N-ethylpyrrolidone, ethylene glycol, ethanol and other solvents, are used as the main cleaning agent;

[0045] 2. Add pure water that directly participates in the reaction to the cleaning agent. During the cleaning process, the pure water is brought into the deep layer of the gap to accelerate the curing reaction;

[0046] 3. Add a water-soluble catalyst to the cleaning agent to catalyze the curing reaction.

[0047] 4. Each component of the present invention has good compatibility and stable storage.

[0048] The curing mechanism of silane-modified polyether is generally to cure by the reaction of the catalyst with moisture in the air. In the present invention, through the cleaning agent, the water required for curing is brought in more quickly than the moisture in the air, and at the same time, an easily soluble and efficient catalyst is added, which can achieve a rapid curing effect without affecting the construction of the sealant. Detailed implementation mode

[0049] In order to make the application, technical solution and advantages of the present invention clearer and more understandable, the content of the present invention will be described in detail with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not limited to the present invention. Any simple improvement to the preparation method of the present invention under the premise of the inventive concept belongs to the protection scope of the present invention.

[0050] Example 1

[0051] A special cleaning agent for silane-modified polyether joint sealant, which comprises the following components:

[0052] 30 g of pure water is put into a mixing kettle. Through a glass rod or a guiding rod, 69 g of ethanol is slowly added to the mixing kettle while stirring. Stir for 30 min, control the material temperature not to exceed 40 °C, and drop 1 g of 1,8-diazabicyclo[5.4.0]undec-7-ene into the mixing kettle and stir for 15 min; when the above components are completely dissolved and in a clear and stable state, it can be filled and discharged to prepare the special cleaning agent for silane-modified polyether joint sealant of the present invention.

[0053] Example 2

[0054] A special cleaning agent for silane-modified polyether joint sealant, which comprises the following components:

[0055] 30 g of pure water is put into a mixing kettle. Through a glass rod or a guiding rod, 5 g of ethanol and 64 g of N-methylpyrrolidone are slowly added to the mixing kettle while stirring. Stir for 30 min, control the material temperature not to exceed 40 °C, and drop 1 g of 1,8-diazabicyclo[5.4.0]undec-7-ene into the mixing kettle and stir for 15 min; when the above components are completely dissolved and in a clear and stable state, it can be filled and discharged to prepare the special cleaning agent for silane-modified polyether joint sealant of the present invention.

[0056] Example 3

[0057] A special cleaning agent for silane-modified polyether joint sealant, which comprises the following components:

[0058] 30 g of pure water is put into a mixing kettle. Through a glass rod or a guiding rod, 69 g of ethylene glycol is slowly added to the mixing kettle while stirring. Stir for 30 min, control the material temperature not to exceed 40 °C, and drop 1 g of 1,8-diazabicyclo[5.4.0]undec-7-ene into the mixing kettle and stir for 15 min; when the above components are completely dissolved and in a clear and stable state, it can be filled and discharged to prepare the special cleaning agent for silane-modified polyether joint sealant of the present invention.

[0059] Table 1 Detection result table of examples and traditional construction methods

[0060]

[0061]

[0062] The traditional construction of water-based epoxy colored sand is divided into 5 steps, namely joint cleaning, mixing, joint filling, joint scraping, and scrubbing; the present invention reduces the process of mixing components A and B of the epoxy joint sealer compared with the traditional construction method, and avoids various problems caused by uneven mixing of components A and B of the epoxy joint sealer.

[0063] There are three major problems in the application of silane-modified polyether joint sealant in mosaic tiles and other aspects:

[0064] (1) For the scraping construction of mosaic tiles, the flatness is poor and the surface is not beautiful;

[0065] (2) It is difficult to clean the residual glue after construction;

[0066] (3) The curing speed is relatively slow after construction, which affects the construction period.

[0067] The above results show that Examples 1, 2, and 3 have obvious advantages compared with the traditional construction method: the products of the present invention are easy to construct on such tiles as mosaic tiles, and the dense brick joints and interfaces are still beautiful and flat on the surface after construction. The cleaning agent brings the water required for the curing reaction and the catalyst to promote the reaction during the cleaning process, which significantly accelerates the deep curing speed. After 1 day of construction, the hardness in the joint reaches above Shore D40, and the subsequent processes can be carried out normally one day later, while the traditional construction method requires 3 days or more to carry out the subsequent construction.

[0068] The difference between Example 1 and Example 3 lies only in the difference between ethanol and ethylene glycol. From the above results, using ethanol will significantly reduce the flash point. The advantage is that the evaporation speed is fast and it can dry in a shorter time after cleaning; ethylene glycol has a high flash point and a slow evaporation speed. After cleaning, it takes a certain time to wait for the cleaning agent to evaporate (less than the curing time of the joint sealer).

[0069] In summary, the embodiments of the present invention are only preferred examples of the present invention and do not impose any form of limitation on the present invention; any equivalent changes, such as slight modifications and evolutions made by those skilled in the art without departing from the technical solution of the present invention using the disclosed technical content, are regarded as equivalent examples of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

[0070] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0071] In the present invention, the experimental methods without specific conditions noted are usually in accordance with conventional conditions or the conditions recommended by the manufacturer.

[0072] For the various optimized technical solutions in the present invention, unless otherwise stated, the various optimized technical solutions can be combined with each other.

[0073] Unless otherwise stated, percentages and parts are weight percentages and weight parts.

[0074] For the experimental methods without specific conditions noted in the specification and the embodiments, they are usually in accordance with conventional conditions or the conditions recommended by the manufacturer.

[0075] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the method of the present invention.

Claims

1. A special cleaning agent for silane-modified polyether seam beautifying agent, characterized in that: It includes the following components in percentage by weight: Cleaning agent 50-75%, water 20-40%, catalyst 1-2%; The sum of all components is 100%; The cleaning agent is a solvent having a good cleaning effect on ethers; The catalyst is soluble in water, can stably exist in the cleaning agent, and can catalyze the curing reaction of the silane-modified polyether seam-beautifying agent.

2. The special cleaning agent for silane-modified polyether seam beautifying agent according to claim 1, characterized in that: The cleaning agent is one or a combination of ethanol, ethylene glycol, N-methyl pyrrolidone, N-ethyl pyrrolidone, and dipropylene glycol methyl ether.

3. The special cleaning agent for silane-modified polyether seam beautifying agent according to claim 1, characterized in that: The catalyst is one or a combination of triethylenediamine and 1,8-diazobispiro[5.4.0]undec-7-ene.

4. The special cleaning agent for silane-modified polyether seam beautifying agent according to claim 1, characterized in that: The water is one of pure water, purified water and deionized water.

5. The special cleaning agent for silane-modified polyether seam beautifying agent according to claim 1, characterized in that: The special cleaning agent for silane-modified polyether seam-beautifying agent is suitable for silane-modified polyether seam-beautifying agent with α-hybridized end-capped silane-modified polyether as the main body.

6. A method for preparing the special cleaning agent for silane-modified polyether seam beautifying agent according to claim 1, characterized in that: It comprises the following preparation steps: S1. Add water to the mixing kettle; S2. Slowly add the cleaning agent to the mixing kettle through a glass rod or a drainage rod, stirring for 30 minutes; S3. When some solvents in the cleaning agent are miscible with water, a large amount of heat will be released. Pay attention to the temperature change. When the temperature is higher than 40°C, stop adding. When the temperature drops to 30°C, continue adding. S4. Accurately add the catalyst dropwise into the mixing kettle and stir for 15 minutes; S5. When the above components are completely dissolved in each other and are in a clear and stable state, the material can be filled and discharged to prepare a special cleaning agent for silane-modified polyether seam beautifying agent.

7. A construction method of the special cleaning agent for silane-modified polyether seam beautifying agent according to claim 1, characterized in that: It comprises the following preparation steps: S1. Clean the gaps. Clean the gaps between tiles, leaving a depth of 3 to 5 mm and keep the gaps dry; S2. Fill the gaps. Use a scraper to take an appropriate amount of silane-modified polyether caulking agent and fill it into the gaps little by little. You can scrape the gaps at the same time. S3. Scrub after scraping the seam; scrubbing comprises the following steps: Use a sponge to dip into the special cleaning agent for silane-modified polyether grouting agent, scrub the floor, and scrub the tiles in a circular motion until the silane-modified polyether grouting agent on the surface of the tiles is cleaned.

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