Special color paste for medium-temperature sintering and preparation method thereof

Abstract

The preparation method of the special color paste for medium-temperature sintering comprises the following steps: 1, preparing components: preparing toner, a curing agent, a coupling agent, a color fixing agent, an alkaline reinforcing agent, an adhesive and water in parts by mass for later use; 2, preparing a curing agent: stirring the curing agent in the step a and water to obtain a primary mixture; 3, adjusting the pH value: adding an alkaline enhancer into the first-stage mixture, and mixing to obtain a second-stage mixture; 4, preparing a semi-finished product: adding the second-stage mixture into the toner, mixing for 1 hour, adding the coupling agent, and stirring and mixing for 20 minutes; finally adding a color fixing agent and mixing for 20 minutes to obtain a semi-finished product; and 5, during use, mixing and sintering the color paste semi-finished product, the adhesive and the to-be-dyed gravel. According to the special color paste for medium-temperature sintering at the sintering temperature of 300-500 DEG C, provided by the invention, the color paste has good acid and alkali resistance and boiling resistance, meanwhile, the energy consumption of medium-temperature sintering is low, and a basis is provided for energy conservation and emission reduction of enterprises.

Description

Technical Field

[0001] The invention relates to the technical field of color pastes, and in particular to a color paste specially used for medium-temperature sintering and a preparation method thereof. Background Art

[0002] Artificial colored sand is obtained by coating the surface of mineral particles with a colored coating. It is characterized by uniform and bright colors. It can be processed according to color requirements to prepare a variety of colored sand varieties to meet people's different needs. It occupies a very important position in building decoration materials.

[0003] In the traditional manufacturing process of artificial colored sand, dyes and quartz sand are mixed, sintered into one, and then crushed and screened into finished colored sand products. However, the technology for preparing colored sand by this method is not mature yet. Technicians have found that during the sintering process, the sintering temperature has a direct impact on the dye:

[0004] (1) The sintering temperature is 300℃~500℃, which belongs to medium temperature sintering. After medium temperature sintering, the colored sand has the properties of acid and alkali resistance and water boiling resistance. Its disadvantages are also obvious: due to its high temperature and limited dye selection, it is difficult for organic water-based paint to meet the medium temperature requirements.

[0005] (2) The sintering temperature is 200℃~400℃, which belongs to low-temperature sintering. During the low-temperature sintering process, the temperature is not high, so the water-based organic coating has a wide range of choices. However, the disadvantage is that the sintered colored sand has poor acid, alkali and water boiling resistance.

[0006] (3) The sintering temperature is higher than 800°C, which is considered high-temperature sintering. Since high-temperature sintering consumes a lot of energy, it is not conducive to energy saving in production and has high costs.

[0007] To solve the above problems, we have redeveloped a color paste suitable for medium-temperature sintering after a lot of research and development. Summary of the invention

[0008] 1. Technical issues to be resolved

[0009] The present invention can solve the existing technical problems and provide a special color paste for medium-temperature sintering with a sintering temperature of 300°C to 500°C. The color paste can have good acid, alkali and water boiling resistance and low energy consumption for medium-temperature sintering, providing a basis for energy conservation and emission reduction for enterprises.

[0010] (II) Technical solution

[0011] In order to achieve the above object, the present invention adopts the following technical scheme, a special color paste for medium temperature sintering, characterized in that the preparation components are calculated by mass as follows:

[0012]

[0013] A special color paste for medium temperature sintering, characterized in that the preparation steps are as follows:

[0014] a. Prepare components: prepare toner, curing agent, coupling agent, fixing agent, alkaline enhancer and water according to the mass proportions;

[0015] b. Prepare a curing agent: stir the curing agent and water in step a at room temperature for 1 to 2 hours to obtain a primary mixture;

[0016] c. Adjusting pH: Adding an alkaline enhancer to the primary mixture obtained in step b, adjusting the pH value to 10, mixing and stirring for 1 to 2 hours to obtain a secondary mixture;

[0017] d. Preparation of semi-finished products: Add the secondary mixture configured in step c to the color powder and stir and mix for 1 hour; continue to add the coupling agent and stir and mix for 20 minutes; finally, add the fixing agent and stir and mix for 20 minutes to obtain a semi-finished color paste;

[0018] e. When in use, the semi-finished color paste obtained in step d, the adhesive and the sand and gravel to be dyed are mixed and sintered.

[0019] As a preferred technical solution of the present invention, the toner is UV-resistant pigment powder.

[0020] As a preferred technical solution of the present invention, the curing agent includes but is not limited to isocyanate, aziridine, and polycarbodiimide.

[0021] As a preferred technical solution of the present invention, the coupling agent includes but is not limited to tetraethoxysilane, methyltrimethoxysilane, aminopropyltriethoxysilane, and hydroxy silicon solution.

[0022] As a preferred technical solution of the present invention, the alkalinity enhancer is calcium hydroxide.

[0023] (III) Beneficial effects

[0024] The medium-temperature sintering special color paste prepared by the present invention can adapt to medium-temperature sintering at a temperature of 300°C to 500°C through special component ratio and preparation process, thereby reducing production energy consumption. The color paste prepared by the present invention has extremely high acid resistance and alkali resistance, bright color and no fading. The colored sand prepared by the present invention can be used in various environments and has a long service life.

[0025] The special color paste for medium-temperature sintering prepared by the present invention has strong water resistance, and the colored sand prepared by using the special color paste for medium-temperature sintering of the present invention will not fade or change color even if it is exposed to water for a long time. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Furthermore, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0028] The toner used in the embodiment of the present invention is UV-resistant pigment powder, and the toner in this embodiment is purchased from Wenzhou Qicaiyifang Chemical Co., Ltd.

[0029] The color fixing agent used in the embodiments of the present invention was purchased from Guangdong Biaoda New Materials Co., Ltd., and the product model is: colored sand color fixing agent.

[0030] The adhesive used in the embodiment of the present invention is aluminum phosphate adhesive, the product name is: aluminum dihydrogen phosphate, and the manufacturer is: Shandong Qiyun Chemical Technology Co., Ltd.

[0031] Example 1

[0032] A special color paste for medium temperature sintering, characterized in that the preparation steps are as follows:

[0033] a. Prepare components: prepare toner, curing agent, coupling agent, fixing agent, alkaline enhancer and water according to the mass proportions;

[0034] b. Prepare a curing agent: the curing agent in step a and water are stirred at room temperature for 1 hour to obtain a primary mixture;

[0035] c. Adjusting pH: Adding an alkaline enhancer to the primary mixture obtained in step b, adjusting the pH value to 10, mixing and stirring for 1 hour to obtain a secondary mixture;

[0036] d. Preparation of semi-finished products: Add the secondary mixture configured in step c to the color powder and stir and mix for 1 hour; continue to add the coupling agent and stir and mix for 20 minutes; finally, add the fixing agent and stir and mix for 20 minutes to obtain a semi-finished color paste;

[0037] e. When in use, the semi-finished color paste obtained in step d, the adhesive and the sand and gravel to be dyed are mixed and sintered.

[0038] A color paste specially used for medium temperature sintering, the components in parts by mass are as follows:

[0039]

[0040] The curing agent is isocyanate.

[0041] The coupling agent is tetraethoxysilane.

[0042] The alkalinity enhancer is calcium hydroxide.

[0043] Example 2

[0044] A special color paste for medium temperature sintering, characterized in that the preparation steps are as follows:

[0045] a. Prepare components: prepare toner, curing agent, coupling agent, fixing agent, alkaline enhancer and water according to the mass proportions;

[0046] b. Prepare a curing agent: the curing agent in step a and water are stirred at room temperature for 2 hours to obtain a primary mixture;

[0047] c. Adjusting pH: Adding an alkaline enhancer to the primary mixture obtained in step b, adjusting the pH value to 10, mixing and stirring for 2 hours to obtain a secondary mixture;

[0048] d. Preparation of semi-finished products: Add the secondary mixture configured in step c to the color powder and stir and mix for 1 hour; continue to add the coupling agent and stir and mix for 20 minutes; finally, add the fixing agent and stir and mix for 20 minutes to obtain a semi-finished color paste;

[0049] e. When in use, the semi-finished color paste obtained in step d, the adhesive and the sand and gravel to be dyed are mixed and sintered.

[0050] A color paste specially used for medium temperature sintering, the components in parts by mass are as follows:

[0051]

[0052] The curing agent is aziridine.

[0053] The coupling agent is methyltrimethoxysilane.

[0054] The alkalinity enhancer is calcium hydroxide.

[0055] Example 3

[0056] A special color paste for medium temperature sintering, characterized in that the preparation steps are as follows:

[0057] a. Prepare components: prepare toner, curing agent, coupling agent, fixing agent, alkaline enhancer and water according to the mass proportions;

[0058] b. Prepare a curing agent: the curing agent in step a and water are stirred at room temperature for 1.5 hours to obtain a primary mixture;

[0059] c. Adjusting pH: Adding an alkaline enhancer to the primary mixture obtained in step b, adjusting the pH value to 10, mixing and stirring for 1.5 hours to obtain a secondary mixture;

[0060] d. Preparation of semi-finished products: Add the secondary mixture configured in step c to the color powder and stir and mix for 1 hour; continue to add the coupling agent and stir and mix for 20 minutes; finally, add the fixing agent and stir and mix for 20 minutes to obtain a semi-finished color paste;

[0061] e. When in use, the semi-finished color paste obtained in step d, the adhesive and the sand and gravel to be dyed are mixed and sintered.

[0062] A color paste specially used for medium temperature sintering, the components in parts by mass are as follows:

[0063]

[0064] The curing agent is polycarbodiimide.

[0065] The coupling agent is aminopropyltriethoxysilane.

[0066] The alkalinity enhancer is calcium hydroxide.

[0067] Example 4

[0068] Compared with Example 1, the difference of this example is that the components prepared are as follows by mass:

[0069]

[0070] Example 5

[0071] Compared with Example 2, the difference of this example is that the components prepared are as follows by mass:

[0072]

[0073] Example 6

[0074] Compared with Example 3, the difference of this embodiment is that the preparation components are calculated by mass as follows:

[0075]

[0076] Experimental analysis of the present invention:

[0077] Preparation of test material: The color paste prepared in Examples 1-6 was mixed with quartz sand, and sintered at a medium temperature of 450° C. to obtain a finished colored sand product as a test material.

[0078] There are three test objects in each embodiment, which are used for acid test, alkaline test and water resistance test respectively. Each test object is marked with an embodiment mark for identification.

[0079] 1. Acid Test

[0080] Test process: The staff used a 5% by weight hydrochloric acid solution and placed the test objects of Examples 1 to 6 in the same volume of hydrochloric acid solution until the hydrochloric acid solution completely submerged the test objects, and then let them stand.

[0081] The following table shows the experimental results of the acid test:

[0082]

[0083]

[0084] 2. Alkaline test

[0085] Test process: The staff used a 5% by weight sodium hydroxide solution and placed the test objects of Examples 1 to 6 in the same volume of sodium hydroxide solution until the sodium hydroxide solution completely immersed the test objects, and then let it stand.

[0086] The following table shows the experimental results of the alkaline test:

[0087] Serial number project Example 1 After boiling for 1 hour, the color of the test object did not fade or change. Example 2 After boiling for 1 hour, the color of the test object did not fade or change. Example 3 After boiling for 1 hour, the color of the test object did not fade or change. Example 4 After boiling for 1 hour, the color of the test object did not fade or change. Example 5 After boiling for 1 hour, the color of the test object did not fade or change. Example 6 After boiling for 1 hour, the color of the test object did not fade or change.

[0088] 3. Water resistance test

[0089] Test process: The staff heated tap water to 100°C, put the test objects of Examples 1 to 6 into boiling water, boiled them for 1 hour and then took them out.

[0090] The following table shows the experimental results of the water resistance test:

[0091] Serial number project Example 1 After boiling for 1 hour, the color of the test object did not fade or change. Example 2 After boiling for 1 hour, the color of the test object did not fade or change. Example 3 After boiling for 1 hour, the color of the test object did not fade or change. Example 4 After boiling for 1 hour, the color of the test object did not fade or change. Example 5 After boiling for 1 hour, the color of the test object did not fade or change. Example 6 After boiling for 1 hour, the color of the test object did not fade or change.

[0092] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A color paste for medium temperature sintering, characterized in that: The components of the preparation are as follows by mass:

2. A color paste for medium temperature sintering, characterized in that: The preparation steps are as follows: a. Prepare the components: mix the toner, curing agent, coupling agent, fixing agent, alkaline enhancer and water. Prepare spare parts according to the mass quantity; b. Prepare a curing agent: stir the curing agent and water in step a at room temperature for 1 to 2 hours to obtain a primary mixture; c. Adjusting pH: Adding an alkaline enhancer to the primary mixture obtained in step b, adjusting the pH value to 10, mixing and stirring for 1 to 2 hours to obtain a secondary mixture; d. Preparation of semi-finished products: Add the secondary mixture configured in step c to the color powder and stir and mix for 1 hour; continue to add the coupling agent and stir and mix for 20 minutes; finally, add the fixing agent and stir and mix for 20 minutes to obtain a semi-finished color paste; e. When in use, the semi-finished color paste obtained in step d, the adhesive and the sand and gravel to be dyed are mixed and sintered.

3. The medium temperature sintering special color paste according to claim 1, characterized in that: The toner is ultraviolet resistant pigment powder.

4. The medium temperature sintering special color paste according to claim 1, characterized in that: The curing agent includes but is not limited to isocyanate, aziridine, and polycarbodiimide.

5. The medium-temperature sintering special color paste according to claim 1, characterized in that: The coupling agent includes but is not limited to tetraethoxysilane, methyltrimethoxysilane, aminopropyltriethoxysilane, and hydroxy silicon solution.

6. The medium temperature sintering special color paste according to claim 1, characterized in that: The alkalinity enhancer is calcium hydroxide.

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