An oil-resistant tile grout and its preparation method

Abstract

The present application relates to an oil-resistant caulking agent and a preparation method thereof, which comprises S100: adding silane-modified polyether resin, HTBN resin, incremental filler, reinforcing filler, ultraviolet light absorber, heat stabilizer and plasticizer into a stirring kettle and continuously stirring to obtain a mixed solution; S200: heating the mixed solution in step S100 and vacuum drying to obtain a viscous paste; S300: cooling the paste in step S200 and adding a waterproofing agent, an adhesion promoter and a drying agent, and continuously stirring to obtain an oil-resistant caulking agent. The caulking agent synthesized in the present application has excellent effects of high temperature resistance and oil resistance.

Description

Technical Field

[0001] The present application relates to the field of house decoration, and in particular to an oil-resistant seam beautifying agent and a preparation method thereof. Background Art

[0002] Ceramic tiles are widely used for house decoration. They are durable and beautiful in appearance. However, after laying the tiles, there are often certain gaps between the tiles. In the past, ordinary white cement was usually used for grouting and filling. Not only is the surface rough and dull, but more importantly, the surface of the gap will turn black or even fall off after two or three months, making it difficult to clean. Therefore, caulking agents are generally used to fill the gaps between tiles. The caulking agents currently used in the market mainly include three categories: silicone sealants, silane-modified polyether sealants, and epoxy sealants. Among them, silicone sealants have the problem of oil separation after long-term use, and the epoxy sealant body strength is too high, and there is a problem of cracking after long-term aging. Since silane-modified polyether sealants combine the weather resistance of the silane structure and the flexibility of polyether, their share in the application of caulking agents has grown rapidly.

[0003] The invention patent with publication number CN106700999A provides a method for preparing a heat-resistant silane-modified polyether sealant. By selecting resin with a benzene ring structure and inorganic metal as heat-resistant additives, the high-temperature resistance is significantly improved, but the oil resistance is not improved. The invention patent with publication number CN109207109A provides a heat-resistant and environmentally friendly silane-modified polyether sealant. By adding calixarene derivatives, the high-temperature tensile strength retention rate is high and the water immersion resistance is good, but the hot oil resistance is not improved.

[0004] When the caulking agent synthesized by the above invention is used for caulking kitchen tiles, due to the special living environment of the kitchen, there are splashing high-temperature grease and drifting oil smoke. When the caulking agent synthesized by the above invention comes into contact with the splashing high-temperature grease and oil smoke, the grease will adhere to the surface of the caulking agent and gradually erode inward, accelerating the oxidation process of the colloid, making the caulking agent more prone to problems such as surface blackening and cracking, breeding mold and affecting the appearance, thereby limiting the scope of use of the caulking agent synthesized by the above invention. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an oil-resistant seam beautifying agent with good high temperature resistance and oil resistance and a preparation method thereof.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An oil-resistant seam beautifying agent and a preparation method thereof, the method comprising: adding silane-modified polyether resin, HTBN resin, an incremental filler, a reinforcing filler, an ultraviolet light absorber, a heat stabilizer and a plasticizer into a stirring kettle and continuously stirring to obtain a mixed liquid; heating the mixed liquid and vacuum drying to obtain a viscous paste; cooling the viscous liquid and adding a waterproofing agent, an adhesion promoter and a drying agent, and continuously stirring to obtain the oil-resistant seam beautifying agent.

[0008] In the present invention, the mass of the silane-modified polyether resin in step S100 accounts for 30-40% of the total mass of the materials fed in step S100, the silane-modified polyether resin in step S100 is one or a combination of Jiangsu Ruiyang Antai 200D and Japan Kaneka Chemical 280, the incremental filler in step S100 accounts for 35-50% of the total mass of the materials fed in step S100, the incremental filler in step S100 is one or more of light calcium carbonate, heavy calcium carbonate, and organic bentonite, the reinforcing filler in step S100 accounts for 5-10% of the total mass of the materials fed in step S100, and the reinforcing filler in step S100 is one or more of hydrophobic fumed silica and polyamide wax.

[0009] In the present invention, the mass of the HTBN resin in step S100 accounts for 5-10% of the total mass of the materials charged in step S100, the ultraviolet light absorber in step S100 accounts for 0.1-0.5% of the total mass of the materials charged in step S100, the ultraviolet light absorber in step S100 is one or a combination of UV329 and UV326, the heat stabilizer in step S100 accounts for 0.1-0.5% of the total mass of the materials charged in step S100, the model of the heat stabilizer in step S100 is CLX50, the plasticizer in step S100 accounts for 2-5% of the total mass of the materials charged in step S100, and the ultraviolet light absorber in step S100 is one or more of DIDP, DINP and LANXESS mesamoll.

[0010] In the present invention, the waterproofing agent in step S300 accounts for 1-5% of the total mass of the materials charged in step S100, the waterproofing agent in step S300 is one or more of No. 3 waterproofing agent and A-171, the adhesion promoter in step S300 accounts for 2-5% of the total mass of the materials charged in step S100, the adhesion promoter in step S300 is a silane coupling agent, the drying agent in step S300 accounts for 0.1-1% of the total mass of the materials charged in step S100, and the drying agent in step S300 is one or more of organic tin, organic bismuth, and organic zinc.

[0011] In the present invention, the heating temperature in step S200 is 100-110° C., and the vacuum degree of vacuum drying in step S200 is not less than 0.09 MPa.

[0012] In the present invention, the cooling temperature in step S300 is less than or equal to 40°C.

[0013] The obtained seam beautifying agent was tested for surface drying time, tensile strength, elongation at break, hardness, heat aging resistance, water resistance and heat oil resistance according to national standards.

[0014] More specifically, it is recommended that the method described in the present invention be carried out according to the following steps: 300-400g of silane-modified polyether resin, 50-100g of HTBN resin, 350-500g of incremental filler, 50-100g of reinforcing filler, 1-5g of ultraviolet light absorber, 1-5g of heat stabilizer and 20-50g of plasticizer are added to a stirring kettle, and stirred at a speed of 60 rpm for 4-6 hours at 60°C to obtain a mixed solution; the mixed solution is heated to 100-110°C and vacuum dried at a vacuum degree of not less than 0.09Mpa for 0.5-1 hour to obtain a viscous paste; the stirring kettle is cooled with cooling water so that the paste is cooled to below 40°C, and then 10-50g of waterproofing agent, 20-50g of adhesion promoter and 1-10g of drying agent are added, and the mixture is stirred at a speed of 60 rpm for 1-2 hours to obtain an oil-resistant seam-beautifying agent.

[0015] The synthetic method of the present invention has the beneficial effect that the oil-resistant caulking agent has better high temperature resistance, high oil resistance and hot oil resistance than the traditional caulking agent, so that the application scope of the oil-resistant caulking agent is expanded. Due to the special environment in the kitchen, the caulking agent will be exposed to splashing grease and drifting oil smoke. The traditional caulking agent will be oxidized in this environment, resulting in problems such as blackening and cracking of the surface, breeding mold and affecting the appearance. The oil-resistant caulking agent synthesized by the present invention can be used in the kitchen environment because of its good oil resistance and high temperature resistance. DETAILED DESCRIPTION

[0016] The present invention is further described below through specific implementation modes, but the protection scope of the present invention is not limited thereto.

[0017] Example 1: 400g of Jiangsu Ruiyang Antai 200D silane-modified polyether resin, 100g of HTBN resin, 350g of light calcium carbonate, 50g of fumed silica, 5g of UV329 ultraviolet light absorber, 5g of CLX50 heat stabilizer and 20g of DIDP plasticizer were added to a stirring kettle at 60°C and stirred at 60 rpm for 4 hours to obtain a mixed solution; the mixed solution was heated to 100°C and vacuum dried at a vacuum degree of 0.05Mpa for 1 hour to obtain a viscous liquid; the stirring kettle was cooled with cooling water so that the viscous liquid was cooled to 35°C, and then 10g of No. 3 waterproofing agent, 50g of silane coupling agent and 1g of T-12 drying agent were added, and the mixture was stirred at 60 rpm for 1 hour to obtain an oil-resistant seam beautifying agent.

[0018] The difference between Example 2 and Example 1 is that the type of the incremental filler added in step S100 is different, as shown in the following table:

[0019] Example 1 Example 2 Silane modified polyether resin 200D 40g 40g Light calcium carbonate 35g 0g Heavy calcium carbonate 0g 35g

[0020] The difference between Examples 3-5 and Example 1 is that the types of silane-modified polyether resin added in step S100 are different, and the difference between Example 2 and Example 3 is that the types of incremental fillers added in step S100 are different, as shown in the following table:

[0021] Example 1 Example 3 Example 4 Example 5 Silane modified polyether resin 200D 40g 0g 0g 20g Silane modified polyether resin 280 0g 40g 40g 20g Light calcium carbonate 35g 0g 35g 0g Heavy calcium carbonate 0g 35g 0g 25g

[0022] The difference between Comparative Example 1 and Example 1 is whether HTBN resin is added in step S00, as shown in the following table:

[0023] Example 1 Comparative Example 1 Whether to add HTBN resin yes no

[0024] Detection Methods

[0025] The physical and chemical properties of each embodiment, comparative example and commercially available seam beautifier were tested according to national standards, wherein the surface drying time was tested according to GB / T13477, the tensile strength and elongation at break were tested according to GB / T 528, the hardness was tested according to HGT2368-2011, and the water resistance was tested according to GB / T 1733-1993. The test results are as follows:

[0026]

[0027] Conclusion: It can be seen from the data of Example 1, Example 2, Comparative Example 1 and commercial epoxy type caulking agent in the above table that the oil-resistant caulking agent synthesized by the present invention has lower tensile strength and hardness than the commercial caulking agent, and higher elongation at break. The basic physical properties meet the requirements of normal use. After adding HTBN resin to the oil-resistant caulking agent synthesized by the present invention, HTBN resin is a telechelic polymer with butadiene-acrylonitrile as the main chain and hydroxyl groups at the molecular chain ends. The HTBN resin forms a silane-modified polyether sealant through a silane coupling agent. The chemical bonding is determined to effectively improve the compatibility of the two, avoid oil separation, slow down the speed at which the grease erodes into the interior of the caulking agent after the grease adheres to the surface of the caulking agent, and significantly improve the heat oil resistance and heat aging resistance of the product compared with commercially available caulking agents. The product has a longer service life when exposed to splashing hot oil and drifting oil smoke in a kitchen environment, so that the synthesized oil-resistant caulking agent of the present invention has a wider range of uses, which shows that the HTBN resin has a significant effect on improving the heat resistance and oil resistance of the caulking agent.

[0028]

[0029]

[0030] Conclusion: It can be seen from the data of Example 1, Example 2 and commercially available epoxy type caulking agent in the above table that the oil-resistant caulking agent synthesized by the present invention has lower tensile strength and hardness than the commercially available caulking agent, and the elongation at break is increased. The basic physical properties meet normal use. After adding the ultraviolet light absorber to the oil-resistant caulking agent synthesized by the present invention, due to the antioxidant effect of the ultraviolet light absorber, the heat aging resistance of the oil-resistant caulking agent synthesized by the present invention is significantly improved compared with the commercially available caulking agent. In the kitchen environment, when the caulking agent is often exposed to high-temperature grease, the oil-resistant caulking agent synthesized by the present invention has a longer service life and expands the scope of use.

[0031]

[0032] Conclusion: It can be seen from the data of Example 1 and Example 2 in the above table that when the incremental filler added in step S100 of the synthetic oil-resistant seam beautifying agent of the present invention is heavy calcium carbonate, the resistance is not significantly improved compared with light calcium carbonate, but the surface drying time is prolonged and the elongation at break is reduced. Therefore, it is more appropriate for the incremental filler added in the present invention to be light calcium carbonate.

[0033]

[0034]

[0035] Conclusion: It can be seen from the data of Example 1 and Examples 3-5 in the above table that the types of the silane-modified polyether resin added in step S100 of the invention are silane-modified polyether resin 200D, silane-modified polyether resin 280, and when the two are mixed, the physical properties and the resistances do not change significantly. Therefore, when synthesizing the oil-resistant seam beautifying agent described in the present invention, a wider range of raw materials can be selected.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing an oil-resistant seam-beautifying agent, characterized in that: The following steps are involved: S100: adding silane-modified polyether resin, HTBN resin, extender filler, reinforcing filler, ultraviolet light absorber, CLX50 and plasticizer into a stirring tank and continuously stirring to obtain a mixed solution; S200: heating the mixed solution in step S100 and vacuum drying to obtain a viscous paste; S300: Cooling the viscous liquid in step S200 and adding a waterproofing agent, an adhesion promoter and a drying agent, and continuously stirring to obtain an oil-resistant seam beautifying agent; Among them, the mass of the HTBN resin in step S100 accounts for 5-10% of the total mass of the materials charged in step S100; the mass of the silane-modified polyether resin in step S100 accounts for 30-40% of the total mass of the materials charged in step S100, and the silane-modified polyether resin in step S100 is one or a combination of Jiangsu Ruiyang Antai 200D and Japan Zhongyuan Chemical 280.

2. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The ultraviolet light absorber in step S100 accounts for 0.1-0.5% of the total mass of the materials fed in step S100. The ultraviolet light absorber in step S100 is one or a combination of UV329 and UV326.

3. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The incremental filler in step S100 accounts for 35-50% of the total mass of the materials fed in step S100. The incremental filler in step S100 is one or more of light calcium carbonate, heavy calcium carbonate, and organic bentonite.

4. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The reinforcing filler in step S100 accounts for 5-10% of the total mass of the materials fed in step S100, and the reinforcing filler in step S100 is hydrophobic fumed silica.

5. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The CLX50 in step S100 accounts for 0.1-0.5% of the total mass of the materials fed in step S100.

6. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The plasticizer in step S100 accounts for 2-5% of the total mass of the materials fed in step S100. The plasticizer in step S100 is one or more of DIDP, DINP and LANXESS mesamoll.

7. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The waterproofing agent in step S300 accounts for 1-5% of the total mass of the materials charged in step S100, the waterproofing agent in step S300 is one or more of No. 3 waterproofing agent and A-171, the adhesion promoter in step S300 accounts for 2-5% of the total mass of the materials charged in step S100, the adhesion promoter in step S300 is a silane coupling agent, the drying agent in step S300 accounts for 0.1-1% of the total mass of the materials charged in step S100, and the drying agent in step S300 is one or more of organic tin, organic bismuth, and organic zinc.

8. The method for preparing an oil-resistant seam-beautifying agent according to claim 1, characterized in that: The heating temperature in step S200 is 100-110° C., the vacuum degree of vacuum drying in step S200 is not less than 0.09 MPa, and the cooling temperature in step S300 is less than or equal to 40° C.

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