Preparation method of stain-resistant artificial stone washbasin

Abstract

The present invention relates to a preparation method of a stain-resistant artificial stone washbasin; in the present invention, modified T3302 resin, a coupling agent, and an initiator are mixed and stirred, and then a filler, an accelerator, and a curing agent are added continuously, and vacuum is pumped to obtain a filler; after a mold release agent is evenly applied to the inner surface of the mold, IN119003S signal white gel coat is evenly sprayed in the mold; the filler is poured into the mold and filled solidly, left standing, vacuum defoamed, dried and cured, then cooled to room temperature, demolded, and surface-treated to obtain a stain-resistant artificial stone washbasin; the modified T3302 resin is prepared by stirring and reacting orthophthalic unsaturated polyester resin, acryloyl chloride, and aluminum trichloride, and then 5-amino-3(2H)-isothiazolinone, 2-methylamino-5-pyridine borate, and triethylamine are added continuously; the artificial stone washbasin prepared by the present invention has high hardness, low water absorption, and excellent stain resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial stone washbasins, and in particular to a preparation method of a stain-resistant artificial stone washbasin. Background Art

[0002] Artificial marble is one of the most widely used artificial solid surface materials at present. It is a composite material obtained by curing and forming with unsaturated polyester resin as the binder, adding inorganic fillers, curing agents and other auxiliary reagents. It has similar patterns to natural marble, rich colors and lusters, sufficient strength and hardness, water resistance and pollution resistance, and low cost, so it is widely used in artificial stone washbasins.

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

[0004] Chinese Patent CN103396039A: Provides a new type of artificial stone washbasin 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 paste; 1 - 3 parts of curing agent.

[0005] Chinese Patent CN115594441A: Relates to the technical field of C04B26 / 00, and specifically relates to an artificial stone washbasin and a preparation method. An artificial stone washbasin, by weight, the preparation raw materials 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, and the addition amount of the filler c is 0.1 - 0.5 wt% 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 an oxide of graphene.

[0006] The artificial stone washbasins prepared by the prior art have low hardness and are prone to quality problems such as deformation, color change, cracking, blistering, and fading, and have poor stain resistance. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides a preparation method of a stain-resistant artificial stone washbasin, and its operation steps are as follows:

[0008] S1: Mix 50 - 60 parts of modified T3302 resin, 1 - 3 parts of coupling agent, and 0.1 - 1 part of initiator evenly by stirring.

[0009] S2: Continuously add 120 - 150 parts of filler, 0.1 - 1 part of accelerator, and 1 - 3 parts of curing agent, mix and stir evenly, then evacuate to obtain the filled material.

[0010] S3: After evenly applying a layer of mold release agent on the inner surface of the mold, evenly spray IN119003S signal white gel coat in the mold.

[0011] S4: Pour the filled material into the mold to fill it up, let it stand, remove air bubbles under vacuum, and then place it in an oven at 70 - 80 °C for curing for 90 - 120 min.

[0012] S5: After curing, cool it down to room temperature, demold, and perform surface treatment to obtain a stain - resistant artificial stone washbasin.

[0013] The coupling agent is one of γ - aminopropyltriethoxysilane, γ - methacryloxypropyltrimethoxysilane, vinyltriethoxysilane, and vinyltrimethoxysilane.

[0014] The initiator is one of benzoyl peroxide, cumene hydroperoxide, and di - tert - butyl peroxide.

[0015] The filler is one of quartz sand and calcium carbonate powder.

[0016] The accelerator is one of cobalt isooctanoate, cobalt naphthenate, imidazole, and T8 - D accelerator.

[0017] The curing agent is one of methyl ethyl ketone peroxide, dicyandiamide, curing agent M50, and curing agent V388.

[0018] The mold release agent is one of Chem-Trend PM - 60A, Chem-Trend PM - 7108, Chem-Trend 2720, Chem-Trend PMREZ, Chem-Trend LusinAlroOL151, Chem-Trend LusinCleanL21F, and Chem-Trend LusinProtectG31F.

[0019] The preparation method of the modified T3302 resin is as follows:

[0020] M1: At a temperature of 80 - 90 °C, stir and mix 300 - 420 parts of orthophthalic unsaturated polyester resin, 20 - 30 parts of acryloyl chloride, and 4 - 8 parts of aluminum trichloride, and react for 100 - 150 minutes to obtain T3302 resin containing propenyl.

[0021] 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 - mentioned mixture, and the reaction is continued under heat preservation for 60 - 120 minutes, finally obtaining a modified T3302 resin containing isothiazolinone and borate functional groups.

[0022] Reaction mechanism

[0023] 1. Structural characteristics of reactants

[0024] T3302 resin: T3302 resin contains active propylene groups, and these groups can participate in addition reactions as electrophiles; 5 - amino - 3(2H) - isothiazolinone, the amino group in this compound has nucleophilicity and can undergo Michael addition reaction with the propylene groups in T3302 resin.

[0025] 2 - methylamino - 5 - pyridine borate: Similarly, the amino group in this compound also has nucleophilicity and can undergo a similar Michael addition reaction with the propylene groups in T3302 resin.

[0026] During the reaction process, the amino groups in 5 - amino - 3(2H) - isothiazolinone and 2 - methylamino - 5 - pyridine borate act as nucleophiles, attacking the propylene groups in T3302 resin to form new chemical bonds.

[0027] Technical effects

[0028] The preparation method of a stain - resistant artificial stone washbasin of the present invention has the following remarkable effects compared with the prior art:

[0029] Detergency performance: Through this modification, the artificial stone surface obtains better surface activity, which helps to remove oil stains and dirt.

[0030] 1. Stain resistance: The attachment of stains on the surface of the modified artificial stone is reduced, improving the stain resistance.

[0031] 2. Antibacterial property: Since isothiazolinone has certain antibacterial properties, the artificial stone may obtain additional sanitary protection.

[0032] 3. Stability: The addition of pyridine borate may improve the thermal stability and chemical stability of the material.

[0033] 4. Aesthetic property: Through this modification, artificial stone products with special colors or gloss can be developed to meet the aesthetic needs of different consumers. Specific embodiments

[0034] To further elaborate on 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 examples and comparative examples:

[0035] Barcol hardness, water absorption rate, and stain resistance test: The tests were carried out with reference to JC / T 644-1996 "Sanitary Ware of Artificial Agate and Artificial Marble", and the test results are shown in Table 1. Example 1

[0036] A preparation method of a stain-resistant artificial stone washbasin, the operation steps of which are as follows:

[0037] S1: Mix 50 g of modified T3302 resin, 1 g of coupling agent, and 0.1 g of initiator evenly by stirring;

[0038] S2: Continuously add 120 g of filler, 0.1 g of accelerator, and 1 g of curing agent, mix and stir evenly, and evacuate to obtain a filler;

[0039] S3: After evenly applying a layer of mold release agent on the inner surface of the mold, evenly spray IN119003S signal white gel coat in the mold;

[0040] S4: Pour the filler into the mold to fill it up, let it stand, remove air bubbles under vacuum, and then place it in an oven at 70 °C for curing for 90 min;

[0041] S5: After curing, cool it to room temperature, demold it, and perform surface treatment to obtain a stain-resistant artificial stone washbasin.

[0042] The coupling agent is γ-aminopropyltriethoxysilane.

[0043] The initiator is benzoyl peroxide.

[0044] The filler is quartz sand.

[0045] The accelerator is cobalt isooctoate.

[0046] The curing agent is methyl ethyl ketone peroxide.

[0047] The mold release agent is Ken-TEK PM-60A.

[0048] The preparation method of the modified T3302 resin is as follows:

[0049] M1: At a temperature of 80 °C, stir and mix 300 g of orthophthalic unsaturated polyester resin, 20 g of acryloyl chloride, and 4 g of aluminum trichloride, and after reacting for 100 minutes, obtain T3302 resin containing allyl groups;

[0050] M2: Subsequently, add 3 g of 5-amino-3(2H)-isothiazolinone, 0.03 g of 2-methylamino-5-pyridine borate, and 4 g of triethylamine to the above mixture, and continue to carry out heat preservation reaction for 60 minutes to finally obtain modified T3302 resin containing isothiazolinone and borate functional groups. Example 2

[0051] A preparation method of a stain-resistant artificial stone washbasin, and its operation steps are as follows:

[0052] S1: Mix 53 g of modified T3302 resin, 2 g of coupling agent, and 0.5 g of initiator evenly by stirring;

[0053] S2: Continuously add 130 g of filler, 0.5 g of accelerator, and 2 g of curing agent, mix and stir evenly, and evacuate to obtain a filler;

[0054] S3: After evenly applying a release agent on the inner surface of the mold, evenly spray IN119003S signal white gel coat in the mold;

[0055] S4: Pour the filler into the mold to fill it up, let it stand, remove air bubbles under vacuum, and then place it in an oven at 75 °C for curing for 100 min;

[0056] S5: After curing, cool down to room temperature, demold, and perform surface treatment to obtain a stain-resistant artificial stone washbasin.

[0057] The coupling agent is γ-methacryloxypropyltrimethoxysilane.

[0058] The initiator is cumene hydroperoxide.

[0059] The filler is quartz sand.

[0060] The accelerator is cobalt naphthenate.

[0061] The curing agent is dicyandiamide.

[0062] The release agent is Chem-Trend PM-7108.

[0063] The preparation method of the modified T3302 resin is as follows:

[0064] M1: At a temperature of 85 °C, stir and mix 350 g of orthophthalic unsaturated polyester resin, 23 g of acryloyl chloride, and 5 g of aluminum trichloride, and after reacting for 110 minutes, obtain a T3302 resin containing allyl groups;

[0065] M2: Subsequently, add 4 g of 5-amino-3(2H)-isothiazolinone, 0.1 g of 2-methylamino-5-pyridine borate, and 5 g of triethylamine to the above mixture, and continue to keep the temperature for reaction for 80 minutes to finally obtain a modified T3302 resin containing isothiazolinone and borate functional groups. Example 3

[0066] A preparation method of a stain-resistant artificial stone washbasin, and its operation steps are as follows:

[0067] S1: Mix 58 g of modified T3302 resin, 2 g of coupling agent, and 0.8 g of initiator evenly by stirring.

[0068] S2: Continuously add 140 g of filler, 0.8 g of accelerator, and 2 g of curing agent, mix and stir evenly, and evacuate to obtain a filled material.

[0069] S3: After evenly applying a layer of mold release agent on the inner surface of the mold, evenly spray IN119003S signal white gel coat in the mold.

[0070] S4: Pour the filled material into the mold to fill it up, let it stand, remove air bubbles under vacuum, and then place it in an oven at 75 °C for curing for 110 min.

[0071] S5: After curing, cool it down to room temperature, demold it, and perform surface treatment to obtain a stain-resistant artificial stone washbasin.

[0072] The coupling agent described is vinyltriethoxysilane.

[0073] The initiator described is cumene hydroperoxide.

[0074] The filler described is calcium carbonate powder.

[0075] The accelerator described is imidazole.

[0076] The curing agent described is curing agent M50.

[0077] The mold release agent described is Chem-Trend 2720.

[0078] The preparation method of the modified T3302 resin described is as follows:

[0079] M1: At a temperature of 85 °C, mix 400 g of orthophthalic unsaturated polyester resin, 28 g of acryloyl chloride, and 7 g of aluminum trichloride by stirring, and after reacting for 140 minutes, obtain T3302 resin containing propenyl.

[0080] M2: Subsequently, add 5 g of 5-amino-3(2H)-isothiazolinone, 0.2 g of 2-methylamino-5-pyridine borate, and 7 g of triethylamine to the above mixture, continue to keep the temperature and react for 100 minutes, and finally obtain modified T3302 resin containing isothiazolinone and borate functional groups. Example 4

[0081] A preparation method of a stain-resistant artificial stone washbasin, and its operation steps are as follows:

[0082] S1: Mix 60 g of modified T3302 resin, 3 g of coupling agent, and 1 g of initiator evenly by stirring.

[0083] S2: Continuously add 150 g of filler, 1 g of accelerator, and 3 g of curing agent, mix and stir evenly, and evacuate to obtain the filler;

[0084] S3: After evenly applying a layer of mold release agent on the inner surface of the mold, evenly spray the IN119003S signal white gel coat in the mold;

[0085] S4: Pour the filler into the mold to fill it up, let it stand, remove air bubbles under vacuum, and then place it in an oven at 80 °C for curing for 120 min;

[0086] S5: After curing, cool it down to room temperature, demold it, and perform surface treatment to obtain a stain-resistant artificial stone washbasin.

[0087] The coupling agent is vinyltrimethoxysilane.

[0088] The initiator is di-tert-butyl peroxide.

[0089] The filler is calcium carbonate powder.

[0090] The accelerator is T8-D accelerator.

[0091] The curing agent is curing agent V388.

[0092] The mold release agent is Chem-Trend LusinProtect G31F.

[0093] The preparation method of the modified T3302 resin is as follows:

[0094] M1: At a temperature of 90 °C, stir and mix 420 g of orthophthalic unsaturated polyester resin, 30 g of acryloyl chloride, and 8 g of aluminum trichloride. After reacting for 150 minutes, obtain the T3302 resin containing allyl groups;

[0095] M2: Subsequently, add 6 g of 5-amino-3(2H)-isothiazolinone, 0.3 g of 2-methylamino-5-pyridine borate, and 8 g of triethylamine to the above mixture, and continue the heat preservation reaction for 120 minutes to finally obtain the modified T3302 resin containing isothiazolinone and borate functional groups.

[0096] Comparative Example 1

[0097] Do not modify the T3302 resin, and the others are the same as in Example 1.

[0098] Comparative Example 2

[0099] Do not add 5-amino-3(2H)-isothiazolinone, and the others are the same as in Example 1.

[0100] Comparative Example 3

[0101] Without adding 2-methylamino-5-pyridine borate, and the others are the same as in Example 1.

[0102] Table 1

[0103] Barcol hardness Water absorption rate / % Stain resistance Example 1 43 0.3 No obvious change Example 2 44 0.2 No obvious change Example 3 45 0.2 No obvious change Example 4 46 0.1 No obvious change Comparative example 1 34 1.2 Cracks and blisters on the surface Comparative example 2 38 0.7 Blisters on the surface Comparative example 3 39 0.6 Blisters on the surface

[0104] Through the data analysis of the above examples and comparative examples, the artificial stone washbasin prepared by the present invention has high hardness, low water absorption and excellent stain resistance.

[0105] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall 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 filling material into the mold, fill it, let it stand, vacuum degassing, and then place it in a 70-80°C oven to cure for 90-120 minutes; S5: cool to room temperature after curing, demould, and perform surface treatment to obtain a stain-resistant artificial stone basin; 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.

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 methyl ethyl ketone peroxide, dicyandiamide, curing agent M50, 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 LusinCleanL21 F, and Kentian LusinProtectG31 F.