Preparation method of stain-resistant artificial stone counter basin

Abstract

The invention relates to a preparation method of a stain-resistant artificial stone counter basin. The preparation method comprises the following steps: mixing and stirring modified T3302 resin, a coupling agent and an initiator, continuously adding a filler, an accelerant and a curing agent, and vacuumizing to obtain a filler; after the inner surface of the mold is evenly coated with a layer of release agent, an IN119003S signal white gel coat is evenly sprayed in the mold; and pouring the filler into a mold, filling, standing, carrying out vacuum defoaming, drying and curing, cooling to room temperature, demolding, and carrying out surface treatment to obtain the stain-resistant artificial stone counter basin. The modified T3302 resin is prepared by the following steps: carrying out a stirring reaction on orthophthalic unsaturated polyester resin, acryloyl chloride and aluminum trichloride, and continuously adding 5-amino-3 (2H)-isothiazolinone, 2-methylamino-5-pyridine borate and triethylamine; the artificial stone counter basin prepared by the invention is high in hardness, low in water absorption and excellent in pollution resistance.

Description

Technical Field

[0001] The invention relates to the technical field of artificial stone basins, in particular to a method for preparing a stain-resistant artificial stone basin. Background Art

[0002] Artificial marble is the most widely used type of artificial solid surface material. It is a composite material obtained by curing and molding unsaturated polyester resin as a binder, adding inorganic fillers, curing agents and other auxiliary agents. It has similar textures to natural marble, rich colors and luster, sufficient strength and hardness, water resistance, pollution resistance, and low cost, so it is widely used in artificial stone basins.

[0003] Chinese patent CN116283062A: A glass fiber composite aluminum hydroxide powder and its preparation method, artificial stone prepared thereby and its preparation method and application. In the glass fiber composite aluminum hydroxide powder, by mass, the glass fiber: aluminum hydroxide is 10:1-1:6; the artificial stone, by mass, includes the following components in percentage by mass: 20-40% unsaturated polyester, 50-75% glass fiber composite aluminum hydroxide powder, 0.5-2% curing agent, 0.5-2% accelerator, 0.1-2% defoaming agent, and 1-3% color paste.

[0004] Chinese patent CN103396039A: provides a new type of artificial stone basin and its production process, which is made of the following raw materials in parts by weight: 250-350 parts of unsaturated polyester resin; 600-800 parts of heavy calcium carbonate; 1-3 parts of initiator; 0.5-1.5 parts of accelerator; 3-7 parts of white pulp; 1-3 parts of curing agent.

[0005] Chinese patent CN115594441A: relates to the technical field of C04B26 / 00, specifically to an artificial stone basin and a preparation method. An artificial stone basin, in parts by weight, the raw materials for preparation include: 70-90 parts of unsaturated resin, 160-200 parts of filler a, 0.5-1 part of curing agent, 0.4-1 part of initiator, 4-10 parts of coupling agent, 3-5 parts of filler b, filler c, the addition amount of filler c is 0.1-0.5wt% of the unsaturated resin, the filler a is selected from glass microspheres and / or calcium carbonate, the filler b is pearl powder, and the filler c is graphene oxide.

[0006] The artificial stone basin prepared by the existing technology has low hardness, is prone to quality problems such as deformation, discoloration, cracking, bubbling, fading, etc., and has poor pollution resistance. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a method for preparing a stain-resistant artificial stone basin, and the operating steps are as follows: S1: Mix 50-60 parts of modified T3302 resin, 1-3 parts of coupling agent, and 0.1-1 parts of initiator and stir evenly; S2: Continue to add 120-150 parts of filler, 0.1-1 parts of accelerator, and 1-3 parts of curing agent, mix and stir evenly, and evacuate to obtain a filling material; S3: After applying a layer of release agent evenly on the inner surface of the mold, spray IN119003S signal white gel coat evenly inside the mold; S4: Pour the filler into the mold, fill it tightly, let it stand, vacuum degas, and then place it in a 70-80℃ oven to cure for 90-120 minutes; S5: After solidification, the temperature is lowered to room temperature, demoulding is performed, and surface treatment is performed to obtain a stain-resistant artificial stone basin.

[0008] The coupling agent is one of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, vinyltriethoxysilane and vinyltrimethoxysilane.

[0009] The initiator is one of benzoyl peroxide, cumene hydroperoxide and di-tert-butyl peroxide.

[0010] The filler is one of quartz sand and calcium carbonate powder.

[0011] The accelerator is one of cobalt isooctanoate, cobalt cyclohexaneate, imidazole and T8-D accelerator.

[0012] The curing agent is one of methyl ethyl ketone peroxide, dicyandiamide, curing agent M50 and curing agent V388.

[0013] The release agent is one of Kentian PM-60A, Kentian PM-7108, Kentian 2720, Kentian PMREZ, Kentian LusinAlroOL151, Kentian LusinCleanL21F, and Kentian LusinProtectG31F.

[0014] The preparation method of the modified T3302 resin is: M1: 300-420 parts of orthophthalic unsaturated polyester resin, 20-30 parts of acryloyl chloride and 4-8 parts of aluminum chloride are stirred and mixed at a temperature of 80-90°C, and reacted for 100-150 minutes to obtain T3302 resin containing acryloyl; M2: Subsequently, 3-6 parts of 5-amino-3(2H)-isothiazolinone, 0.03-0.3 parts of 2-methylamino-5-pyridine borate and 4-8 parts of triethylamine are added to the above mixture, and the reaction is continued at the temperature for 60-120 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups.

[0015] Reaction mechanism 1. Structural characteristics of reactants T3302 resin: T3302 resin contains active propylene groups, which can participate in addition reactions as electrophiles; 5-amino-3(2H)-isothiazolinone, the amino group in this compound is nucleophilic and can undergo Michael addition reaction with the propylene groups in T3302 resin.

[0016] 2-Methylamino-5-pyridine borate: Similarly, the amino group in this compound is also nucleophilic and can undergo a similar Michael addition reaction with the propylene group in T3302 resin.

[0017] During the reaction, the amino groups in 5-amino-3(2H)-isothiazolinone and 2-methylamino-5-pyridine borate act as nucleophiles to attack the propylene groups in T3302 resin to form new chemical bonds.

[0018] Technical Effects The present invention discloses a method for preparing a stain-resistant artificial stone basin. Compared with the prior art, the present invention has the following significant effects: Stain removal properties: Through this modification, the artificial stone surface acquires better surface activity, which helps to remove oil and stains.

[0019] 1. Stain resistance: The modified artificial stone surface reduces the adhesion of stains and improves stain resistance.

[0020] 2. Antibacterial property: Since isothiazolinone has certain antibacterial properties, artificial stone may obtain additional sanitary protection.

[0021] 3. Stability: The addition of pyridine borate may improve the thermal stability and chemical stability of the material.

[0022] 4. Aesthetics: Through this modification, artificial stone products with special colors or gloss can be developed to meet the aesthetic needs of different consumers. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description in combination with embodiments and comparative examples: Barcol hardness, water absorption, and stain resistance tests: Tested in accordance with JC / T644-1996 "Artificial agate and artificial marble sanitary ware", the test results are shown in Table 1. Example 1

[0024] A method for preparing a stain-resistant artificial stone basin, the operating steps of which are as follows: S1: Mix 50g of modified T3302 resin, 1g of coupling agent, and 0.1g of initiator and stir evenly; S2: Continue to add 120g of filler, 0.1g of accelerator, and 1g of curing agent, mix and stir evenly, and evacuate to obtain a filling material; S3: After applying a layer of release agent evenly on the inner surface of the mold, spray IN119003S signal white gel coat evenly inside the mold; S4: Pour the filler into the mold, fill it tightly, let it stand, vacuum degas, and then place it in a 70°C oven to cure for 90 minutes; S5: After solidification, the temperature is lowered to room temperature, demoulding is performed, and surface treatment is performed to obtain a stain-resistant artificial stone basin.

[0025] The coupling agent is γ-aminopropyltriethoxysilane.

[0026] The initiator is benzoyl peroxide.

[0027] The filler is quartz sand.

[0028] The accelerator is cobalt isooctanoate.

[0029] The curing agent is methyl ethyl ketone peroxide.

[0030] The release agent is Ken-Tian PM-60A.

[0031] The preparation method of the modified T3302 resin is: M1: 300 g of o-phthalic unsaturated polyester resin, 20 g of acryloyl chloride and 4 g of aluminum chloride were stirred and mixed at 80°C and reacted for 100 minutes to obtain T3302 resin containing acryloyl groups; M2: Subsequently, 3 g of 5-amino-3(2H)-isothiazolinone, 0.03 g of 2-methylamino-5-pyridine borate and 4 g of triethylamine were added to the above mixture, and the reaction was continued at the temperature for 60 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups. Example 2

[0032] A method for preparing a stain-resistant artificial stone basin, the operating steps of which are as follows: S1: Mix 53g of modified T3302 resin, 2g of coupling agent, and 0.5g of initiator and stir evenly; S2: Continue to add 130g of filler, 0.5g of accelerator, and 2g of curing agent, mix and stir evenly, and evacuate to obtain a filling material; S3: After applying a layer of release agent evenly on the inner surface of the mold, spray IN119003S signal white gel coat evenly inside the mold; S4: Pour the filler into the mold, fill it tightly, let it stand, vacuum degas, and then place it in a 75°C oven to cure for 100 minutes; S5: After solidification, the temperature is lowered to room temperature, demoulding is performed, and surface treatment is performed to obtain a stain-resistant artificial stone basin.

[0033] The coupling agent is gamma-methacryloxypropyltrimethoxysilane.

[0034] The initiator is cumene hydroperoxide.

[0035] The filler is quartz sand.

[0036] The promoter is cobalt cyclopentaneate.

[0037] The curing agent is dicyandiamide.

[0038] The release agent is Ken-Tian PM-7108.

[0039] The preparation method of the modified T3302 resin is: M1: 350g of o-phthalic unsaturated polyester resin, 23g of acryloyl chloride and 5g of aluminum chloride were stirred and mixed at 85°C and reacted for 110 minutes to obtain T3302 resin containing acryloyl groups; M2: Subsequently, 4 g of 5-amino-3(2H)-isothiazolinone, 0.1 g of 2-methylamino-5-pyridine borate and 5 g of triethylamine were added to the above mixture, and the reaction was continued at the temperature for 80 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups. Example 3

[0040] A method for preparing a stain-resistant artificial stone basin, the operating steps of which are as follows: S1: Mix 58g of modified T3302 resin, 2g of coupling agent, and 0.8g of initiator and stir evenly; S2: Continue to add 140g of filler, 0.8g of accelerator, and 2g of curing agent, mix and stir evenly, and evacuate to obtain a filling material; S3: After applying a layer of release agent evenly on the inner surface of the mold, spray IN119003S signal white gel coat evenly inside the mold; S4: Pour the filler into the mold, fill it tightly, let it stand, vacuum degas, and then place it in a 75°C oven to cure for 110 minutes; S5: After solidification, the temperature is lowered to room temperature, demoulding is performed, and surface treatment is performed to obtain a stain-resistant artificial stone basin.

[0041] The coupling agent is vinyltriethoxysilane.

[0042] The initiator is cumene hydroperoxide.

[0043] The filler is calcium carbonate powder.

[0044] The accelerator is imidazole.

[0045] The curing agent is curing agent M50.

[0046] The release agent is Ken-Tian 2720.

[0047] The preparation method of the modified T3302 resin is: M1: 400 g of o-phthalic unsaturated polyester resin, 28 g of acryloyl chloride and 7 g of aluminum chloride were stirred and mixed at 85°C and reacted for 140 minutes to obtain T3302 resin containing acryloyl groups; M2: Subsequently, 5 g of 5-amino-3(2H)-isothiazolinone, 0.2 g of 2-methylamino-5-pyridine borate and 7 g of triethylamine were added to the above mixture, and the reaction was continued at the temperature for 100 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups. Example 4

[0048] A method for preparing a stain-resistant artificial stone basin, the operating steps of which are as follows: S1: Mix 60g of modified T3302 resin, 3g of coupling agent and 1g of initiator and stir evenly; S2: Continue to add 150g of filler, 1g of accelerator, and 3g of curing agent, mix and stir evenly, and evacuate to obtain a filling material; S3: After applying a layer of release agent evenly on the inner surface of the mold, spray IN119003S signal white gel coat evenly inside the mold; S4: Pour the filler into the mold, fill it tightly, let it stand, vacuum degas, and then place it in an 80°C oven to cure for 120 minutes; S5: After solidification, the temperature is lowered to room temperature, demoulding is performed, and surface treatment is performed to obtain a stain-resistant artificial stone basin.

[0049] The coupling agent is vinyltrimethoxysilane.

[0050] The initiator is di-tert-butyl peroxide.

[0051] The filler is calcium carbonate powder.

[0052] The accelerator is T8-D accelerator.

[0053] The curing agent is curing agent V388.

[0054] The release agent is Kentian LusinProtectG31F.

[0055] The preparation method of the modified T3302 resin is: M1: 420 g of o-phthalic unsaturated polyester resin, 30 g of acryloyl chloride and 8 g of aluminum chloride were stirred and mixed at 90°C and reacted for 150 minutes to obtain T3302 resin containing acryloyl groups; M2: Subsequently, 6 g of 5-amino-3(2H)-isothiazolinone, 0.3 g of 2-methylamino-5-pyridine borate and 8 g of triethylamine were added to the above mixture, and the reaction was continued at the temperature for 120 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups.

[0056] Comparative Example 1 The T3302 resin was not modified, and the other steps were the same as in Example 1.

[0057] Comparative Example 2 The other steps were the same as in Example 1 except that 5-amino-3(2H)-isothiazolinone was not added.

[0058] Comparative Example 3 The other steps were the same as in Example 1 except that 2-methylamino-5-pyridine borate was not added.

[0059] Table 1 Barcol hardness Water absorption / % Pollution resistance Example 1 43 0.3 No significant changes Example 2 44 0.2 No significant changes Example 3 45 0.2 No significant changes Example 4 46 0.1 No significant changes Comparative Example 1 34 1.2 Surface cracks and bubbles Comparative Example 2 38 0.7 Surface bubbling Comparative Example 3 39 0.6 Surface bubbling Through the data analysis of the above embodiments and comparative examples, the artificial stone basin prepared by the present invention has high hardness, low water absorption and excellent pollution resistance.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a stain-resistant artificial stone basin, the operating steps of which are: S1: Mix 50-60 parts of modified T3302 resin, 1-3 parts of coupling agent, and 0.1-1 parts of initiator and stir evenly; S2: Continue to add 120-150 parts of filler, 0.1-1 parts of accelerator, and 1-3 parts of curing agent, mix and stir evenly, and evacuate to obtain a filling material; S3: After applying a layer of release agent evenly on the inner surface of the mold, spray IN119003S signal white gel coat evenly inside the mold; S4: Pour the filler into the mold, fill it tightly, let it stand, vacuum degas, and then place it in a 70-80℃ oven to cure for 90-120 minutes; S5: After solidification, the temperature is lowered to room temperature, demoulding is performed, and surface treatment is performed to obtain a stain-resistant artificial stone basin.

2. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The coupling agent is one of gamma-aminopropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane, vinyltriethoxysilane and vinyltrimethoxysilane.

3. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The initiator is one of benzoyl peroxide, cumene hydroperoxide and di-tert-butyl peroxide.

4. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The filler is one of quartz sand and calcium carbonate powder.

5. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The accelerator is one of cobalt isooctanoate, cobalt cyclohexaneate, imidazole and T8-D accelerator.

6. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The curing agent is one of methyl ethyl ketone peroxide, dicyandiamide, curing agent M50 and curing agent V388.

7. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The release agent is one of Kentian PM-60A, Kentian PM-7108, Kentian 2720, Kentian PMREZ, Kentian LusinAlroOL151, Kentian LusinCleanL21F, and Kentian LusinProtectG31F.

8. The method for preparing a stain-resistant artificial stone basin according to claim 1, characterized in that: The preparation method of the modified T3302 resin is: M1: 300-420 parts of orthophthalic unsaturated polyester resin, 20-30 parts of acryloyl chloride and 4-8 parts of aluminum chloride are stirred and mixed at a temperature of 80-90°C, and reacted for 100-150 minutes to obtain T3302 resin containing acryloyl; M2: Subsequently, 3-6 parts of 5-amino-3(2H)-isothiazolinone, 0.03-0.3 parts of 2-methylamino-5-pyridine borate and 4-8 parts of triethylamine are added to the above mixture, and the reaction is continued at the temperature for 60-120 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups.