CN113621285A

CN113621285A - Paint capable of being painted on silicon rubber, not easy to fall off and capable of being cleaned and manufacturing method thereof

Info

Publication number: CN113621285A
Application number: CN202010318153.6A
Authority: CN
Inventors: 虎盈
Original assignee: Beijing Duxiang Education Technology Co ltd
Current assignee: Beijing Duxiang Education Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-11-09
Also published as: WO2021213403A1

Abstract

The embodiment of the invention discloses a pigment which can be painted on silicon rubber, is not easy to fall off and can be cleaned and a manufacturing method thereof, belonging to the technical field of pigments. The pigment takes water, propylene glycol, titanium dioxide, acrylic resin, polymethacrylate, polyether sulfonate, branched alkyl benzene sulfonic acid sodium, fatty alcohol-polyoxyethylene ether carboxylate, nonylphenol polyoxyethylene ether, secondary alkyl sodium sulfonate, polyethylene glycol and triethanolamine as raw materials, can be coated on silicon rubber, has flexibility after the pigment is solidified, is not easy to fall off, and can be competent for the flexibility characteristic of the silicon rubber.

Description

Paint capable of being painted on silicon rubber, not easy to fall off and capable of being cleaned and manufacturing method thereof

Technical Field

The embodiment of the invention relates to the technical field of pigments, in particular to a pigment which can be painted on silicon rubber, is not easy to fall off and can be cleaned and a manufacturing method thereof.

Background

Silicone rubber refers to rubber having a backbone composed of alternating silicon and oxygen atoms, with the silicon atoms typically having two organic groups attached to them. The silicone rubber is divided into high-temperature silicone rubber and room-temperature silicone rubber, the high-temperature silicone rubber is mainly used for manufacturing various silicone rubber products, and the room-temperature silicone rubber is mainly used as an adhesive, an encapsulating material or a mold. Because the surface energy of the silicon rubber is lower, the prepared coating is difficult to spread on the surface of the silicon rubber, and the adhesion effect is poor.

At present, protective ink coated on silicon rubber exists on the market, but pigment capable of being coated on the silicon rubber does not exist yet. The painting of universal pigments on silicone rubbers generally presents the following problems: the silicon rubber cannot be perfectly fit, and coloring is difficult; the flexibility is poor, the flexibility of the silicon rubber cannot be adapted, and the solidified pigment layer cannot deform and fall off along with the deformation of the silicon rubber; during the curing process of the pigment, the silicone rubber body is fused, residual marks are generated when the pigment is removed, and the pigment cannot be effectively removed, so that the silicone rubber cannot be reused.

In view of this, the present application is specifically made.

Disclosure of Invention

Therefore, the embodiment of the invention provides a pigment which can be painted on silicon rubber and is not easy to fall off and can be cleaned and a manufacturing method thereof, and aims to solve the problems that the existing general pigment is difficult to paint on silicon rubber, is poor in painting performance, poor in flexibility and easy to fall off and cannot be cleaned effectively.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

according to a first aspect of the embodiments of the present invention, there is provided a paint that can be painted on a silicone rubber, is not easy to fall off, and can be cleaned, the paint including, by weight: 54.75-55.75% of water, 0.75-1% of propylene glycol, 15-16% of titanium dioxide, 16-16.75% of acrylic resin, 9.75-10% of polymethacrylate, 0.25-0.4% of polyether sulfonate, 0.1-0.25% of branched alkylbenzene sulfonate, 0.25-0.5% of fatty alcohol-polyoxyethylene ether, 0.075-0.125% of fatty alcohol-polyoxyethylene ether carboxylate, 0.025-0.075% of nonylphenol polyoxyethylene ether, 0.05-0.1% of secondary alkyl sodium sulfonate, 0.05-0.1% of polyethylene glycol and 0.125-0.25% of triethanolamine.

Further comprises the following components in percentage by weight: 55.25% of water, 1% of propylene glycol, 15.5% of titanium dioxide, 16.75% of acrylic resin, 9.88% of polymethacrylate, 0.4% of polyether sulfonate, 0.25% of branched alkylbenzene sulfonate, 0.4% of fatty alcohol-polyoxyethylene ether, 0.12% of fatty alcohol-polyoxyethylene ether carboxylate, 0.05% of nonylphenol polyoxyethylene ether, 0.1% of secondary alkyl sodium sulfonate, 0.1% of polyethylene glycol and 0.2% of triethanolamine.

Furthermore, the pigment also comprises 0.5 to 1.0 weight percent of pigment.

Further, the colorant comprises pigment red p.r.112, pigment yellow p.y.151, pigment orange p.o.34, pigment green p.g.7 or pigment blue p.b.15: 0.

According to a second aspect of the embodiments of the present invention, an embodiment of the present invention provides a method for manufacturing the above-mentioned pigment that can be painted on a silicone rubber, is not easy to fall off, and can be cleaned, including the following steps:

s1, sequentially adding acrylic resin and polyethylene glycol into the mixing barrel, starting a high-speed dispersion machine, controlling the rotating speed at 1000-1500r/min, and stirring for 5-8 minutes;

s2, adding titanium dioxide and water, and dispersing at high speed for 20-30 minutes;

s3, adding propylene glycol, triethanolamine, secondary alkyl sodium sulfonate, polymethacrylate, polyether sulfonate, branched alkyl benzene sodium sulfonate, fatty alcohol-polyoxyethylene ether carboxylate and nonylphenol polyoxyethylene ether, stirring for 10-15 minutes, and standing for 20-30 minutes.

Further, the method comprises the step of adding 0.5-1.0 wt% of pigment between the step S1 and the step S2.

Furthermore, the fineness of the pigment is 10-15 microns by adopting a grinding mode.

Further, after the colorant is added, the mixture is stirred for 20 to 25 minutes.

The embodiment of the invention has the following advantages:

the embodiment of the invention takes water, propylene glycol, titanium dioxide, acrylic resin, polymethacrylate, polyether sulfonate, branched alkyl benzene sulfonic acid sodium salt, fatty alcohol-polyoxyethylene ether carboxylate, nonylphenol polyoxyethylene ether, secondary alkyl sodium sulfonate, polyethylene glycol and triethanolamine as raw materials. Wherein:

the water and the propylene glycol are used as solvents for adjusting the volatilization speed of the pigment, keeping the humidity and controlling the solidification time of the pigment to be proper.

The titanium dioxide is used as a filler, is insoluble in water, has stable physical and chemical properties, and is used for enhancing the leveling property and the color reducing power of the pigment, improving the covering power of the pigment and improving the glossiness and the glossiness.

The acrylic resin is a film forming material and has the functions of: 1. the self-prepared pigment has film-forming property, and the added pigment can be condensed into a film (different from pigments such as gouache and the like) after being dried; 2. the light resistance and aging resistance of the pigment are enhanced; 3. the proper proportion will enhance the washing resistance (the hand is not easy to rub down).

The polymethacrylate is used as a flexibilizer and an adhesive and has the function of enhancing the flexibility of the pigment under the combined action of the polymethacrylate and the acrylic resin, so that the whole viscosity and toughness of the solidified pigment are enhanced, the solidified pigment is not easy to crack, and the properties of the whole pigment can still be maintained on a soft silica gel material.

Polyether sulfonate, sodium branched alkylbenzene sulfonate, fatty alcohol-polyoxyethylene ether and fatty alcohol-polyoxyethylene ether carboxylate are synthesized into a surfactant, and the surfactant has the following functions: 1. moistening action: reducing the surface tension of the medium and the interfacial tension between the medium and the pigment; 2. the stabilizing effect is as follows: improve the dispersion stability of the gluing particles and the pigment in the pigment and keep the pigment components stable.

Polyoxyethylene nonyl phenyl ether and sodium secondary alkyl sulfonate are used as emulsifier, which is used for stabilizing pigment liquid and has similar stabilizing effect with surfactant.

Polyethylene glycol is used as wetting dispersant for wetting the pigment and adjusting the consistency of the pigment.

Triethanolamine is a pH regulator, is used for properly improving the alkalinity of the pigment, and is easy to store the pigment.

The prepared pigment can be coated on the silicone rubber through the interaction of the components, the pigment has flexibility after being solidified, is not easy to fall off, and can be competent for the flexibility of the silicone rubber, the silicone rubber is not dyed after the pigment is cleaned, the pigment can be repeatedly used, and the cost for purchasing a large amount of silicone rubber substrates during silicone rubber painting is saved.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In the following, unless otherwise specified,% by weight refers to% by weight.

Example 1

The preparation method for painting the pigment which is not easy to fall off and can be cleaned on the silicon rubber comprises the following steps:

s1, sequentially adding 16.75% of acrylic resin and 0.1% of polyethylene glycol into a batching barrel, starting a high-speed dispersion machine, controlling the rotating speed at 1200r/min, and stirring for 6 minutes;

s2, adding 15.5 percent of titanium dioxide and 55.25 percent of water, and dispersing at high speed for 25 minutes;

s3, adding 1% of propylene glycol, 0.2% of triethanolamine, 0.1% of secondary alkyl sodium sulfonate, 9.88% of polymethacrylate, 0.4% of polyether sulfonate, 0.25% of branched alkyl benzene sodium sulfonate, 0.4% of fatty alcohol-polyoxyethylene ether, 0.12% of fatty alcohol-polyoxyethylene ether carboxylate and 0.05% of nonylphenol polyoxyethylene ether, stirring for 10 minutes, and standing for 25 minutes.

Example 2

s1, sequentially adding 16.05% of acrylic resin and 0.095% of polyethylene glycol into a batching barrel, starting a high-speed dispersion machine, controlling the rotating speed at 1000r/min, and stirring for 8 minutes;

s2, grinding the pigment red P.R.112 to a fineness of 10-15 microns, adding 0.6% of the pigment red P.R.112, and stirring for 25 minutes;

s3, adding 15.6 percent of titanium dioxide and 55.5 percent of water, and dispersing for 20 minutes at high speed;

s4, adding 0.8% of propylene glycol, 0.125% of triethanolamine, 0.077% of secondary alkyl sodium sulfonate, 9.95% of polymethacrylate, 0.38% of polyether sulfonate, 0.25% of branched alkyl benzene sodium sulfonate, 0.4% of fatty alcohol-polyoxyethylene ether, 0.125% of fatty alcohol-polyoxyethylene ether carboxylate and 0.048% of nonylphenol polyoxyethylene ether, stirring for 12 minutes, and standing for 20 minutes.

Example 3

s1, sequentially adding 16.5% of acrylic resin and 0.05% of polyethylene glycol into a batching barrel, starting a high-speed dispersion machine, controlling the rotating speed at 1500r/min, and stirring for 6 minutes;

s2, grinding the pigment yellow P.Y.151 to a fineness of 10-15 microns, adding 1.0% of the pigment yellow P.Y.151, and stirring for 20 minutes;

s3, adding 15.5% of titanium dioxide and 55.2% of water, and dispersing at high speed for 20-30 minutes;

s5, adding 0.75% of propylene glycol, 0.2% of triethanolamine, 0.05% of secondary alkyl sodium sulfonate, 9.87% of polymethacrylate, 0.25% of polyether sulfonate, 0.2% of branched alkyl benzene sodium sulfonate, 0.3% of fatty alcohol-polyoxyethylene ether, 0.075% of fatty alcohol-polyoxyethylene ether carboxylate and 0.055% of nonylphenol polyoxyethylene ether, stirring for 15 minutes, and standing for 20 minutes.

Example 4

s1, sequentially adding 16.75% of acrylic resin and 0.08% of polyethylene glycol into a batching barrel, starting a high-speed dispersion machine, controlling the rotating speed at 1200r/min, and stirring for 8 minutes;

s2, grinding the pigment red P.R.112 to a fineness of 10-15 microns, adding 0.5% of the pigment red P.R.112, and stirring for 20 minutes;

s3, adding 15.8% of titanium dioxide and 54.75% of water, and dispersing at high speed for 20-30 minutes;

s4, adding 0.9% of propylene glycol, 0.18% of triethanolamine, 0.08% of secondary alkyl sodium sulfonate, 9.85% of polymethacrylate, 0.4% of polyether sulfonate, 0.1% of branched alkyl benzene sodium sulfonate, 0.5% of fatty alcohol-polyoxyethylene ether, 0.08% of fatty alcohol-polyoxyethylene ether carboxylate and 0.03% of nonylphenol polyoxyethylene ether, stirring for 12 minutes, and standing for 30 minutes.

Example 5

s1, sequentially adding 16.3% of acrylic resin and 0.1% of polyethylene glycol into a batching barrel, starting a high-speed dispersion machine, controlling the rotating speed at 1500r/min, and stirring for 5 minutes;

s2, grinding the pigment yellow P.Y.151 to a fineness of 10-15 microns, adding 0.9% of the pigment yellow P.Y.151, and stirring for 22 minutes;

s3, adding 15.7% of titanium dioxide and 55.1% of water, and dispersing at high speed for 20-30 minutes;

s4, adding 1% of propylene glycol, 0.25% of triethanolamine, 0.08% of secondary alkyl sodium sulfonate, 9.75% of polymethacrylate, 0.28% of polyether sulfonate, 0.15% of branched alkyl benzene sodium sulfonate, 0.25% of fatty alcohol-polyoxyethylene ether, 0.08% of fatty alcohol-polyoxyethylene ether carboxylate and 0.06% of nonylphenol polyoxyethylene ether, stirring for 15 minutes, and standing for 25 minutes.

Test example 1

The same weight of the pigments of examples 1 to 5 were applied to the silicone rubber surface, and left in a constant temperature (37 ℃) water bath for 20 minutes to fully cure the pigments, and the quality of the dried pigment layer was observed.

The flexibility of the pigment is measured according to GB/T1731-1993 paint film flexibility determination method, and then whether the pigment has cracks or not is observed by a 50-fold microscope.

The adhesive force of the pigment is measured by referring to a grid drawing method of GB 9286-.

The test results are shown in Table 1.

TABLE 1

Sample (I)	Quality of pigment layer	Flexibility	Adhesion force	Peelability of
					Example 1	Complete without bubbles	No cracking of the crimp	1	Good taste
Example 2	Complete without bubbles	No cracking of the crimp	1	Good taste
					Example 3	Complete without bubbles	No cracking of the crimp	1	Good taste
Example 4	Complete without bubbles	No cracking of the crimp	1	Good taste
					Example 5	Complete without bubbles	No cracking of the crimp	1	Good taste

The results show that: the pigment provided by the embodiment of the invention can be well coated on silicon rubber, the obtained pigment layer is complete and bubble-free, the flexibility is good, the adhesive force reaches 1 level, the pigment layer can be well attached to the silicon rubber and does not fall off, and meanwhile, the pigment layer has excellent peeling property and better cleanability.

Test example 2

First, experimental material

The pigments of examples 1-5;

watercolor (Shanghai actual Maries painting materials Co., Ltd./model: 324 vermilion);

gouache (Shanghai actual Marie painting materials Co., Ltd./model: 324 vermilion);

chinese painting pigment (Shanghai actual Marie painting Material Co., Ltd./model: 302 bright red);

oil paint (Shanghai actual Maries Marie painting materials Co., Ltd./model: 324 vermilion);

textile pigments (Shanghai actual Maries painting materials Co., Ltd./model: 324 vermilion);

acrylic pigments (Shanghai actual Marie painting materials Co., Ltd./type: acrylic pigment permanent Red);

glass pigment (Shanghai actual Maries painting materials Co., Ltd./model: 306 red);

ceramic pigments (Shanghai actual Maries painting materials Co., Ltd./model: 302 bright red);

color ink (Beijing Yide Ge ink industry, Inc./model: color ink Red);

comparative example 1: the only difference from example 1 is that the acrylic resin was replaced by an equal amount of alkyd resin;

comparative example 2: the only difference from example 1 is that the acrylic resin is replaced by an equal amount of amino resin;

comparative example 3: only differs from example 1 in that no acrylic resin is added;

comparative example 4: the only difference from example 1 is that 1/2 times the amount of acrylic resin was added;

comparative example 5: the only difference from example 1 is that 1.5 times the amount of acrylic resin was added;

comparative example 6: the only difference from example 1 is that 2 times the amount of acrylic resin was added.

Second, research method

2.1 tintability test

And respectively coating the same amount of the pigments on the surface of the silicon rubber by using a uniform row pen, and detecting the coating condition of the pigments on the surface of the silicon rubber after the pigments are completely dried. The results are shown in Table 2.

TABLE 2

The results show that: the pigments, gouache pigments, traditional Chinese painting pigments, oil painting pigments, acrylic pigments, glass pigments, ceramic pigments, comparative examples 3, 4, 5 and 6 of the examples of the present invention had good colorability on silicone rubber.

2.2 adhesion detection

The purpose is as follows: and (3) inspecting the adhesion condition of the pigment on the surface of the silicon rubber, and judging whether the pigment is easy to fall off and fade under the condition of deformation of the silicon rubber. The water color pigment, the textile pigment, the color ink, the comparative example 1 and the comparative example 2 have poor colorability and are not included in the detection.

The method comprises the following specific operations: the silicone rubber was deformed by pressing it with a hand, and the change in the form of the pigment attached to the silicone rubber was examined when it was deformed. The results are shown in Table 3.

TABLE 3

The results show that: the pigment, gouache pigment, traditional Chinese painting pigment, oil painting pigment, comparative example 3 and comparative example 4 of the embodiment of the invention have better adhesion on silicone rubber.

2.3 cleanability assays

I.e. to verify whether the pigment is easily cleaned off under the action of an external force. The adhesion of the acrylic pigment, the glass pigment, the ceramic pigment, comparative example 5 and comparative example 6 was poor, and thus the test was not performed.

The method comprises the following specific operations: the same adhesive tape is covered on the surface of the pigment, and then the adhesive tape is pulled off to check the condition that the pigment is cleaned. The results are shown in Table 4.

TABLE 4

The results show that: the pigments of the examples of the present invention, comparative example 3, comparative example 4 had cleanability.

2.4 abrasion resistance test

Namely, whether the pigment is easily worn away or not is detected under the action of external force. The cleaning performance of gouache, traditional Chinese painting and oil painting is poor, so that the gouache, the traditional Chinese painting and the oil painting are not checked any more.

The method comprises the following specific operations: the surface of the pigment was rubbed with the index finger and thumb with the same force to check how many times the pigment was worn. The results are shown in Table 5.

TABLE 5

Sample (I)	Results
		Example 1	The abrasion appears after 220 times of average kneading, and the experimental result is excellent.
Example 2	The abrasion appears after the rubbing is carried out for 205 times on average, and the experimental result is excellent.
		Practice ofExample 3	The abrasion appears after the rubbing for 212 times averagely, and the experimental result is excellent.
Example 4	The abrasion appears after the rubbing for 216 times averagely, and the experimental result is excellent.
		Example 5	The rubbing is carried out for 211 times averagely, and the experimental result is excellent.
Comparative example 3	The rubbing was carried out 20 times on average, and the results were poor.
		Comparative example 4	The rubbing is carried out 50 times averagely, so the abrasion is generated, and the experimental result is poor.

The results show that: the pigment of the examples of the present invention has abrasion resistance.

Third, conclusion

The pigment provided by the embodiment of the invention has good performances in all aspects in the inspection, and has good ductility on the surface of the silicon rubber, no air bubbles and no obvious texture; after the silicon rubber is extruded, the pigment is not subjected to form change, and the adhesion is good; the silicon rubber can be cleaned by cleaning with an adhesive tape once, and no color residue is left on the surface of the silicon rubber; has abrasion resistance.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A pigment which can be painted on silicon rubber, is not easy to fall off and can be cleaned, and is characterized by comprising the following components in percentage by weight: 54.75-55.75% of water, 0.75-1% of propylene glycol, 15-16% of titanium dioxide, 16-16.75% of acrylic resin, 9.75-10% of polymethacrylate, 0.25-0.4% of polyether sulfonate, 0.1-0.25% of branched alkylbenzene sulfonate, 0.25-0.5% of fatty alcohol-polyoxyethylene ether, 0.075-0.125% of fatty alcohol-polyoxyethylene ether carboxylate, 0.025-0.075% of nonylphenol polyoxyethylene ether, 0.05-0.1% of secondary alkyl sodium sulfonate, 0.05-0.1% of polyethylene glycol and 0.125-0.25% of triethanolamine.

2. The non-shedding and non-removable pigment paintable on silicon rubber according to claim 1, comprising by weight: 55.25% of water, 1% of propylene glycol, 15.5% of titanium dioxide, 16.75% of acrylic resin, 9.88% of polymethacrylate, 0.4% of polyether sulfonate, 0.25% of branched alkylbenzene sulfonate, 0.4% of fatty alcohol-polyoxyethylene ether, 0.12% of fatty alcohol-polyoxyethylene ether carboxylate, 0.05% of nonylphenol polyoxyethylene ether, 0.1% of secondary alkyl sodium sulfonate, 0.1% of polyethylene glycol and 0.2% of triethanolamine.

3. The non-shedding and non-cleaning pigment on silicone rubber according to claim 1, wherein the pigment further comprises 0.5-1.0% by weight of a colorant.

4. A non-shedding and non-removable pigment paintable on silicone rubber according to claim 3, wherein the colorant comprises pigment red p.r.112, pigment yellow p.y.151, pigment orange p.o.34, pigment green p.g.7 or pigment blue p.b.15: 0.

5. The method for preparing the paint which can be painted on the silicon rubber and is not easy to fall off and clean as claimed in claim 1, is characterized by comprising the following steps:

6. The method of claim 5, further comprising a step of adding 0.5-1.0% by weight of a colorant between step S1 and step S2.

7. The method as claimed in claim 6, wherein the fineness of the colorant is 10-15 μm by grinding.

8. The method for preparing a non-shedding and cleanable pigment paintable on silicone rubber according to claim 6, wherein the pigment is added and stirred for 20-25 minutes.