Seam beautifying strip and using method thereof

Abstract

The invention provides a seam beautifying strip and a use method thereof, and relates to the technical field of seam beautifying agents. The seam beautifying strip is characterized by comprising the following raw material components: a strip-shaped polymer and waterborne epoxy glue, and the compression ratio of the strip polymer is not less than 50%. The waterborne epoxy glue is composed of a component A and a component B, the component A comprises epoxy resin emulsion, the component B is a waterborne curing agent, and preferably, the component B comprises amino silicone oil microemulsion. The seam beautifying strip is used for filling and decorating seams and can solve the problem of wide and deep seams.

Description

Technical Field

[0001] The invention belongs to the technical field of seam beautifying agents and relates to a seam beautifying strip and a use method thereof. Background Art

[0002] Sealing agents can be used to fill gaps (such as gaps between tiles) to serve as decoration and filling. Common seaming agents on the market include epoxy resin type, aspartame polyurea type, silicone type, etc. The seaming agents are applied to the gaps, and then the seaming agents are treated and cured. However, for deeper (such as 2 cm) and wider (such as 1 cm) gaps, existing seaming agents are not good enough in terms of performance. There are two main reasons: (1) When the gaps are deep, they cannot be completely filled (the main reason is that the viscosity of existing seaming agents is relatively high) or special tools are required for coordination. (2) After a long time, the seaming agents are prone to cracking, falling off, denting, and other abnormalities. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a seam-beautifying strip and a method for using the same.

[0004] The technical solution of the present invention is as follows:

[0005] A seam beautifying strip, the raw material components of which include a strip polymer and water-based epoxy glue;

[0006] The compression rate of the strip-shaped polymer is not less than 50%;

[0007] The test method of the compression rate is: take the strip-shaped polymer with a height of 10 mm and a diameter of 20 mm, and the height after being subjected to a pressure of 100 g is H mm, and the compression rate is (10-H) / 10×100%.

[0008] Preferably, the strip-shaped polymer is selected from foamed polymers.

[0009] More preferably, the foaming rate of the foaming polymer is not less than 50%, and the cells are open-cell structures.

[0010] More preferably, the foamed polymer is at least one selected from foamed polyurethane, foamed polyurea, foamed polyethylene, foamed polyester, foamed polypropylene and foamed latex.

[0011] Preferably, the water-based epoxy glue consists of component A and component B;

[0012] The A component comprises an epoxy resin emulsion;

[0013] The B component is a water-based curing agent.

[0014] More preferably, the aqueous curing agent comprises amino silicone oil microemulsion.

[0015] Further preferably, the weight proportion of the amino silicone oil microemulsion in the aqueous curing agent is not less than 80%.

[0016] More preferably, the water-based curing agent further comprises a quaternary ammonium salt of organic silicon.

[0017] More preferably, the weight proportion of the organosilicon quaternary ammonium salt in the water-based curing agent is 3-20%.

[0018] The method for using the seam beautifying strip described in any of the above embodiments is to cut the strip polymer according to the size of the gap, then immerse it in the water-based epoxy glue so that the water-based epoxy glue fully penetrates into the strip polymer, take it out, insert it into the gap, and solidify it.

[0019] The beneficial effects of the present invention are:

[0020] (1) The present invention creatively adopts a combination of strip-shaped polymer and water-based epoxy glue, taking advantage of the good filling and construction properties of the strip-shaped polymer and the good adhesion and curing properties of the water-based epoxy glue. Even if the gap is deep and wide, it can be well filled, and the cured seam strip has good stability and will not crack, fall off, or dent for a long time.

[0021] (2) The strip-shaped polymer of the present invention has good absorption of water-based epoxy glue. The epoxy glue can fill the strip-shaped polymer, and the formed seam strip has consistent and stable performance.

[0022] (3) The water-based epoxy glue of the present invention adopts amino silicone oil microemulsion as a curing agent, which has good curing effect and good permeability, and can improve the weather resistance, flexibility, high and low temperature resistance, etc. of the seam strip; the water-based curing agent further contains organic silicon quaternary ammonium salt, which can not only provide certain antibacterial properties, but also help to accelerate the curing of the water-based glue. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further illustrated and described below through specific implementation methods.

[0024] In order to make the caulking agent more widely applicable, not only suitable for conventional small gaps between tiles, but also suitable for wider and deeper gaps, and the caulking agent is more stable, on the one hand, the present invention provides a caulking strip, the raw material components of which include a strip polymer and a water-based epoxy glue;

[0025] The compression rate of the strip polymer is not less than 50%;

[0026] The compression rate test method is: take a strip of polymer with a height of 10 mm and a diameter of 20 mm, and the height after being subjected to a pressure of 100 g is H mm, and the compression rate is (10-H) / 10×100%.

[0027] The present invention adopts a seam beautifying strip to replace the existing seam beautifying agent, and the seam beautifying strip is composed of a compressible strip polymer and a water-based epoxy glue. The strip polymer mainly plays a filling role and has good stability. The epoxy glue can penetrate into the entire strip polymer to play a role in bonding and stabilizing the strip polymer. Therefore, the seam beautifying strip of the present invention is not only suitable for conventional tile gaps, but also for larger and deeper gaps.

[0028] In a preferred embodiment of the present invention, the strip polymer is selected from a foaming polymer. The foaming polymer generally has good compressibility, low density, and can fully absorb the water-based epoxy glue, so that the water-based epoxy glue and the strip polymer are better combined. In the present invention, the foaming polymer is particularly limited and can be at least one of foaming polyurethane, foaming polyurea, foaming polyethylene, foaming polyester, foaming polypropylene and foaming latex.

[0029] In a more preferred embodiment of the present invention, the foaming rate of the foaming polymer is not less than 50%, and the foam cells are open-cell structures. The foaming rate and open-cell structure of the foaming polymer have an impact on the compressibility of the strip polymer and the absorbency of the water-based epoxy glue. The open-cell structure is better and more conducive to the wetting and penetration of the water-based epoxy glue, so that the water-based epoxy glue can fill the foaming polymer faster and better.

[0030] In a preferred embodiment of the present invention, the water-based epoxy glue consists of component A and component B;

[0031] Component A contains epoxy resin emulsion;

[0032] Component B is a water-based curing agent.

[0033] Component A contains epoxy resin emulsion, and epoxy resin emulsion is generally used as the main material of component A, and the weight proportion can be no less than 80%. In addition to epoxy resin emulsion, component A can also contain pigments, wetting agents, dispersants, defoamers, antioxidants, anti-yellowing agents, anti-ultraviolet agents, anti-settling agents, thixotropic agents, thickeners, preservatives, fungicides, etc., and play corresponding roles to improve the comprehensive performance of the seam strip.

[0034] In a more preferred embodiment of the present invention, the water-based curing agent comprises amino silicone oil microemulsion.

[0035] In a further preferred embodiment of the present invention, the weight proportion of the amino silicone oil microemulsion in the aqueous curing agent is not less than 80%.

[0036] The water-based curing agent is mainly amino silicone oil microemulsion, which has the following functions: (1) The particle size of amino silicone oil microemulsion is relatively low, generally 10-100nm, or even lower, and has good permeability, which can improve the penetration of water-based epoxy glue into strip polymers; (2) Amino silicone oil microemulsion contains more amino groups, which can be used as a curing agent and have a good curing effect on epoxy resin; (3) When amino silicone oil microemulsion is used as a curing agent, the silicone oil structure in it participates in the cross-linking structure of epoxy resin, which can improve the high and low temperature resistance, flexibility, weather resistance and other properties of the seam strip. In addition to amino silicone oil microemulsion, the water-based curing agent can also contain wetting agents, penetrants, defoamers, dispersants, pigments, anti-settling agents, etc.

[0037] In the present invention, the ratio of component A to component B can be calculated as follows: the molar ratio of the number of moles of epoxy groups in component A to the molar ratio of active hydrogen in the amino group in component B is 1:1-1.2. Specifically, the molar ratio can be 1:1, 1:1.03, 1:1.05, 1:1.08, 1:1.1, 1:1.12, 1:1.15, 1:1.2, etc.

[0038] In a more preferred embodiment of the present invention, the water-based curing agent further comprises a quaternary ammonium organosilicon salt. The quaternary ammonium organosilicon salt has good antibacterial properties and can improve the antibacterial properties of the seam-beautifying strip. In the present invention, the quaternary ammonium organosilicon salt is a hydrophilic quaternary ammonium organosilicon salt, which can be well dispersed or dissolved in the water-based curing agent.

[0039] In the present invention, the organosilicon quaternary ammonium salt can be a quaternary ammonium salt polysiloxane, that is, a quaternary ammonium salt structure is grafted on the side chain of polysiloxane, and the preparation method is not particularly limited, for example, it can be obtained by directly performing a ring-opening reaction between amino silicone oil and epoxy quaternary ammonium salt, specifically, for example, a side chain amino silicone oil (viscosity 200-2000mPa.s at 25°C, ammonia value 0.1-0.8mmol / g) and 2,3-epoxypropyltrimethylammonium chloride are obtained by performing a ring-opening reaction. This is a technique well known to those skilled in the art.

[0040] Further preferably, the organosilicon quaternary ammonium salt of the present invention is an epoxy organosilicon quaternary ammonium salt, which can be obtained by quaternization reaction of amino silicone oil with epichlorohydrin, wherein the amino groups on the side chain and / or main chain of the amino silicone oil are tertiary amino groups, and the structure can be shown in the following formula (1):

[0041] R 2 Me2SiO(SiOMe2) x (SiOMeR 1 ) y SiMe2R 2 (1)

[0042] Among them, R 1 For-R 3N(R 4 )2,R 3 is C2-C6 alkylene, R 4 is selected from C1-C4 alkyl, R 2 Can be used with R 1 The same can also be different, when R 2 With R 1 At the same time, R 2 It can be selected from methyl or hydroxyl, x≥0, y≥0, 10≤x+y≤2000. Or, y≥3 and y / x+y≤0.1. Epoxy-type organosilicon quaternary ammonium salt contains epoxy groups, which can make the organosilicon quaternary ammonium salt also participate in the curing reaction of epoxy resin, and can achieve more lasting antibacterial properties.

[0043] In a further preferred embodiment of the present invention, the weight proportion of the organosilicon quaternary ammonium salt in the water-based curing agent is 3-20%. For example, the weight proportion of the organosilicon quaternary ammonium salt in the water-based curing agent can be 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, etc., or any value therebetween, without particular limitation. Further preferably, the weight proportion of the organosilicon quaternary ammonium salt in the water-based curing agent can be 3-10%.

[0044] On the other hand, the present invention proposes a method for using the seam beautifying strip described in any of the above embodiments, cutting the strip polymer according to the size of the gap, and then immersing it in water-based epoxy glue so that the water-based epoxy glue can fully penetrate into the strip polymer, taking it out, inserting it into the gap, and curing it.

[0045] In the method for using the seam beautifying strip of the present invention, the strip polymer is cut according to the size of the gap, and can be large or small. Due to the compressibility of the strip polymer, there is no very strict requirement for the cutting size of the strip polymer. The size of the strip polymer can fluctuate within a range of 20% relative to the size of the gap, and the cutting freedom is high. For example, if the size of the gap is 5 mm wide and 3 cm deep, the size of the strip polymer can be 4.5-6 mm wide and 2.8-3.6 cm deep.

[0046] The technical solution of the present invention is further described and illustrated according to various embodiments below. Unless otherwise specified, the parts described in the following embodiments are parts by weight.

[0047] Example 1

[0048] The seam strips are composed of strip polymers and water-based epoxy glue.

[0049] The strip-shaped polymer is foamed latex, with a foaming rate of 60%, a compression rate of 55%, and an open-cell structure.

[0050] The compression rate test method is: take a strip of polymer with a height of 10 mm and a diameter of 20 mm, and the height after being subjected to a pressure of 100 g is H mm, and the compression rate is (10-H) / 10×100%.

[0051] Water-based epoxy glue consists of component A and component B;

[0052] Component A is composed of 95.5% epoxy resin emulsion (50% solid content, epoxy value 0.2 mol / 100 g), 0.6% wetting agent BYK-2013, 0.5% defoaming agent BYK-024, 1.1% dispersant BYK-190, 0.3% anti-settling agent BYK-431 and 2% water-based blue color paste (concentration 5wt%), with a weight percentage of 100%.

[0053] Component B is polyetheramine D230.

[0054] The molar ratio of the epoxy group in component A to the active hydrogen in the amino group in component B is 1:1.1.

[0055] Add the epoxy resin emulsion in component A into a stirring container, add a wetting agent, a defoaming agent, and a dispersant, stir at 600 rpm for 15 minutes, then add a water-based blue color paste, stir at 1200 rpm for 20 minutes, and finally add an anti-settling agent, stir at 800 rpm for 10 minutes to obtain component A; add component B directly into component A, stir and dissolve evenly to obtain a water-based epoxy glue.

[0056] Example 2

[0057] The difference between this embodiment and embodiment 1 is that in embodiment 1, component B is replaced by an amino silicone oil microemulsion with a concentration of 18 wt % and an ammonia value of 0.25 mmol / g.

[0058] Example 3

[0059] The difference between this embodiment and embodiment 1 is that in embodiment 1, component B is replaced by an amino silicone oil microemulsion with a concentration of 20 wt % and an ammonia value of 0.4 mmol / g.

[0060] Example 4

[0061] The difference between this embodiment and embodiment 2 is that quaternary ammonium amino silicone oil is added to component B of embodiment 2, and the weight proportion of quaternary ammonium amino silicone oil in component B is 3%.

[0062] Quaternary ammonium amino silicone oil is made of amino silicone oil Me3SiO(SiOMe2) x (SiOMeR 5 ) y SiMe3(R 5It is obtained by ring-opening reaction of -CH2CH2CH2NHCH2CH2NH2, amino silicone oil with a viscosity of 1000mPa.s at 25°C and an ammonia value of 0.4mmol / g) with 2,3-epoxypropyltrimethylammonium chloride in a ratio of primary amino group to epoxy group of 1:0.7.

[0063] Example 5

[0064] The difference between this embodiment and embodiment 4 is that the weight proportion of quaternary ammonium salt amino silicone oil in component B is adjusted from 3% to 6%. The other steps remain unchanged.

[0065] Example 6

[0066] The difference between this embodiment and embodiment 4 is that the weight proportion of quaternary ammonium salt amino silicone oil in component B is adjusted from 3% to 10%. The other steps remain unchanged.

[0067] Example 7

[0068] The difference between this embodiment and embodiment 5 is that the quaternary ammonium salt amino silicone oil is replaced by epoxy quaternary ammonium salt silicone oil. The other steps remain unchanged.

[0069] Epoxy quaternary ammonium salt silicone oil is composed of amino silicone oil (R 1 -CH2CH2CH2NMe2, R 2 Me, amino silicone oil with a viscosity of 800 mPa.s at 25° C. and an ammonia value of 0.35 mmol / g) and epichlorohydrin are reacted in a molar ratio of amino group to epoxy group of 1:0.7 to obtain the product.

[0070] Comparative Example 1

[0071] An epoxy seam beautifying agent prepared according to the method of Example 1 in the prior art CN116285818A.

[0072] Performance Testing

[0073] Dynamic crack resistance: tested according to the method of JG / T157-2004 "Putty for building exterior walls", the cured film thickness of the seam strip and seam agent is 2mm.

[0074] Compression shear strength: Tested according to the method of JC 887-2001 "Epoxy Adhesive for Dry Hanging Stone Curtain Wall";

[0075] Elongation at break: Tested according to the method of GB / T 2567-2008 “Test method for properties of resin castings”.

[0076] High temperature resistance test: Test according to the method of GB / T 2567-2008 "Test Method for Performance of Resin Castings". The seam strip to be tested is made into two samples, sample 1 and sample 2, and the tensile strength A0 of sample 1 is tested; the tensile strength A1 of sample 2 is tested at 180℃ for 120h, and the tensile strength retention rate is calculated as A 1 / A0×100%, the higher the tensile strength retention rate, the better the high temperature resistance.

[0077] Antibacterial property: The test was conducted in accordance with the method of GB / T 21866-2008 “Determination of antibacterial property and antibacterial effect of antibacterial coatings (paint films)”, and the test bacteria was Staphylococcus aureus.

[0078] The results are shown in Table 1 below.

[0079] Table 1

[0080]

[0081] It can be seen from the data results in Table 1 that the seam-beautifying strip of the present invention has excellent dynamic anti-cracking performance and tensile strength retention rate, and also has high compressive shear strength and elongation at break. The antibacterial performance can be significantly improved after adding quaternary ammonium salt.

[0082] As described above, the basic principles, main features and advantages of the present invention are shown and described. Those skilled in the art should understand that the present invention is not limited by the above embodiments, which are only preferred embodiments of the present invention and cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the scope of the present invention and the content of the specification should still be within the scope of the present invention. The scope of protection required by the present invention is defined by the attached claims and their equivalents.

Claims

1. A seam-beautifying strip, characterized in that: The raw material components include strip polymer and water-based epoxy glue; The compression rate of the strip-shaped polymer is not less than 50%; The test method of the compression rate is: take the strip-shaped polymer with a height of 10 mm and a diameter of 20 mm, and the height after being subjected to a pressure of 100 g is H mm, and the compression rate is (10-H) / 10×100%.

2. The seam-beautifying strip according to claim 1, characterized in that: The strip-shaped polymer is selected from foamed polymers.

3. The seam-beautifying strip according to claim 2, characterized in that: The foaming rate of the foaming polymer is not less than 50%, and the cells are open-cell structures.

4. The seam-beautifying strip according to claim 2, characterized in that: The foamed polymer is selected from at least one of foamed polyurethane, foamed polyurea, foamed polyethylene, foamed polyester, foamed polypropylene and foamed latex.

5. The seam-beautifying strip according to claim 1, characterized in that: The water-based epoxy glue consists of component A and component B; The A component comprises an epoxy resin emulsion; The B component is a water-based curing agent.

6. The seam-beautifying strip according to claim 5, characterized in that: The water-based curing agent comprises amino silicone oil microemulsion.

7. The seam-beautifying strip according to claim 6, characterized in that: The weight proportion of the amino silicone oil microemulsion in the water-based curing agent is not less than 80%.

8. The seam-beautifying strip according to claim 5, characterized in that: The water-based curing agent further comprises a quaternary ammonium salt of organic silicon.

9. The seam-beautifying strip according to claim 8, characterized in that: The weight proportion of the organosilicon quaternary ammonium salt in the water-based curing agent is 3-20%.

10. The method for using the seam-beautifying strip according to any one of claims 1 to 9, characterized in that: The strip polymer is cut according to the size of the gap, and then immersed in the water-based epoxy glue so that the water-based epoxy glue fully penetrates into the strip polymer, taken out, inserted into the gap, and cured.

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