CN114851761A - Method for preparing crystal image by using polymethyl methacrylate - Google Patents
Method for preparing crystal image by using polymethyl methacrylate Download PDFInfo
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- CN114851761A CN114851761A CN202210621911.0A CN202210621911A CN114851761A CN 114851761 A CN114851761 A CN 114851761A CN 202210621911 A CN202210621911 A CN 202210621911A CN 114851761 A CN114851761 A CN 114851761A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/04—Modelling plastic materials, e.g. clay
- B44C3/044—Chemical modelling
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a method for preparing a spar image by utilizing polymethyl methacrylate, which relates to the field of plastic high polymer materials and solves the problems that the existing method for making an image into a transparent product can cause low color fidelity of a finished product, poor image detail reduction degree and no aesthetic property, and comprises the steps of mixing methyl methacrylate and polymethyl methacrylate to obtain viscous slurry M, then putting the viscous slurry M into an autoclave to polymerize to obtain spar A, printing the image on the spar A, casting the viscous slurry M again, putting the viscous slurry M into the autoclave to polymerize to obtain a spar finished product B; the finished product B of the spar prepared by heating and polymerizing the methyl methacrylate and the polymethyl methacrylate has better high transparency and easy dyeing, so that the prepared spar image has high color reality and good image reducibility, and the spar A and the viscous slurry M are fused together when the spar A is polymerized in an autoclave, thereby achieving the effect of no joint.
Description
Technical Field
The invention relates to the field of plastic high polymer materials, in particular to the technical field of a method for preparing a crystal stone image by utilizing polymethyl methacrylate.
Background
At present, there are two methods for making an image into a transparent material product, the first is a laser internal engraving technology, specifically, a pulse strong laser is focused in the transparent product to generate a gasification burst point with a micron magnitude, and then the burst point is controlled by a calculator, so that an image can be formed in the transparent product, and the edge has no seam, but the manufacturing cost is huge, a small laser internal engraving needs twenty-ten thousands of costs, and cannot be made into a large product, and has limitations.
The other method is to print the image on one of the transparent products by UV printing after selecting the transparent products such as glass, acrylic, resin, etc., then to coat with glue, then to select a product of the same material to extrude and bond on the transparent product, and to form after the glue is dried.
Disclosure of Invention
The invention aims to: in order to solve the problems that the existing method for making the image into the transparent product causes low color fidelity of the finished product, poor image detail reduction degree and no aesthetic property, the invention provides a method for preparing a spar image by utilizing polymethyl methacrylate.
The invention specifically adopts the following technical scheme for realizing the purpose:
a method for preparing a spar image by utilizing polymethyl methacrylate is characterized by comprising the following steps:
1) stirring methyl methacrylate, polymethyl methacrylate and an auxiliary agent, pouring the stirred viscous slurry M into a mold, putting the mold into an autoclave for polymerization to obtain spar A, and polishing;
2) printing the image on the UV transfer printing paste by a UV printer;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp;
4) tearing off the UV transfer printing paste after the shadowless glue on the image is completely dried within 10-30 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and pouring viscous slurry M on the surface of the crystal A printed with the image, and putting the crystal A into the autoclave again for polymerization to obtain a crystal finished product B with the image.
The polymerization steps of the viscous slurry M in the step 1) and pouring the viscous slurry M on the spar A are consistent, and the polymerization steps are as follows:
A. polymerizing the viscous slurry M at the temperature of 0-40 ℃, putting the viscous slurry M into an autoclave after polymerizing for 50-70 minutes and forming a hard film on the surface, and completing polymerization reaction of the viscous slurry M under the heating condition; the pressure parameter of the autoclave is 0.4-1.4 MPa;
B. and opening the autoclave after the pressure maintaining temperature reaches 0-40 ℃ after the polymerization is finished.
The heating conditions of the autoclave are low-temperature polymerization, medium-temperature polymerization and high-temperature polymerization; the low-temperature polymerization temperature is 40-55 ℃, and the polymerization time is 2-8 hours; the medium-temperature polymerization temperature is 66-99 ℃, and the polymerization time is 3-5 hours; the high-temperature polymerization temperature is 100-120 ℃, and the polymerization time is 8-10 hours.
According to the mass percentage, the methyl methacrylate accounts for 30-39%, the polymethyl methacrylate accounts for 60-69% and the auxiliary agent accounts for 0-1%.
The auxiliary agent comprises one or more of plasticizer, coloring agent and benzoyl peroxide.
According to the mass percentage, the methyl methacrylate is 32 percent, the polymethyl methacrylate is 67 percent, the plasticizer is 0.3 percent, and the coloring agent is 0.7 percent.
According to the mass percentage, the methyl methacrylate is 31 percent, and the polymethyl methacrylate is 69 percent.
The invention has the following beneficial effects:
1. in the invention, the spar finished product B prepared by heating and polymerizing methyl methacrylate and polymethyl methacrylate has better high transparency and easy dyeing, so that the prepared spar image has high color reality and good image reduction degree, and the spar A and the viscous slurry M are fused together when the spar is polymerized in an autoclave, thereby achieving the effect of no joint and leading the finished product to have aesthetic property.
2. In the invention, bubbles are scraped to the edge when the UV transfer printing paste is pasted and pressed out in the polymerization process of the autoclave, so that bubbles do not exist in the finished product B of the spar.
3. In the invention, the methyl methacrylate and the polymethyl methacrylate are plastic high polymer materials, so that the three-dimensional craft product can be made.
4. In the invention, the autoclave can be used for manufacturing the spar with different sizes, so the cost is low;
5. in the invention, the surface of the crystal stone A is polished to ensure that the crystal stone A has a smooth plane without sand marks and impurities, thereby avoiding bubbles in subsequent processing.
6. In the invention, the pressure is maintained to 0-40 ℃ after polymerization, so that the condition that bubbles appear in the later stage of the crystal A and the crystal finished product B can be avoided.
7. In the invention, the viscous slurry M obtained by mixing the methyl methacrylate monomer and the polymethyl methacrylate powder has excellent transparency after polymerization treatment, strong light guiding property, lighter weight than a crystal or glass product, good flexibility, difficult damage and better fluidity in the manufacturing process, thereby being capable of manufacturing complex craft products.
8. In the invention, the viscous slurry M obtained by mixing the methyl methacrylate monomer and the polymethyl methacrylate powder can embed other substances like resin products, can be combined with materials such as wood, metal and the like, has higher plasticity and artistic value, and can be widely used for artware, lamp decorations and household furniture products.
9. In the invention, the spar material can be used as a large-volume product at one time, is yellowing-resistant, can be kept indoors for 8-13 years without changing color, and has high hardness, stable material and relatively fast production period.
10. In the invention, high-temperature polymerization can improve the hardness of the spar material and improve the crack resistance.
Drawings
FIG. 1 is a process drawing of a UV transfer sticker printed with an image according to example 1;
FIG. 2 is a diagram of the finished product of FIG. 1;
FIG. 3 is a processing drawing of the image-printed spar A of example 2;
FIG. 4 is a view of the thick paste M poured on FIG. 3;
fig. 5 is a finished view of fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-2, the present embodiment provides a method for preparing a spar image by using polymethyl methacrylate, comprising the following steps:
1) taking 31% by mass of methyl methacrylate and 69% by mass of polymethyl methacrylate, stirring, pouring the stirred viscous slurry M into a mold, pouring the thickness of the slurry M to be 8 cm, then carrying out polymerization at the temperature of 8 ℃, putting the slurry M into an autoclave after polymerizing for 50 minutes and forming a hard film on the surface, sequentially carrying out low-temperature polymerization at the temperature of 40 ℃ in the autoclave, polymerizing for 2 hours at the medium temperature of 68 ℃, polymerizing for 3 hours at the high temperature of 100 ℃, polymerizing for 8 hours, keeping the pressure temperature to be 27 ℃ after the viscous slurry M finishes polymerization reaction, then opening the autoclave, taking out the crystal A and polishing; the pressure parameter of the autoclave is 0.4 MPa;
2) printing the image on the UV transfer sticker by a UV printer, see fig. 1;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp;
4) tearing off after the shadowless glue on the image is completely dried within 10 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and (3) pouring viscous slurry M on the surface of the crystal A printed with the image, then polymerizing at the temperature of 8 ℃, and then putting the crystal A into the autoclave again to perform low-temperature polymerization, medium-temperature polymerization and high-temperature polymerization in the step 1), and finally obtaining a crystal finished product B with the image, wherein the picture is shown in figure 2.
In this embodiment, 31% by mass of methyl methacrylate and 69% by mass of polymethyl methacrylate are stirred into milk white slurry, and then the stirring is continued to fuse the two substances together, the monomer methyl methacrylate will melt the polymethyl methacrylate powder to obtain viscous slurry M, and the viscous slurry M is heated and polymerized in an autoclave to form a polymer substance, i.e. the high-transparency effect spar a.
Specifically, during polymerization, the autoclave can not be vented and opened, and once the autoclave is opened, the crystal finished product B can generate defects such as bubbles in the later period because of internal pressure in the viscous state.
Example 2
As shown in fig. 3 to 5, the present embodiment provides a method for preparing a spar image by using polymethyl methacrylate, including the following steps:
1) taking 32% by mass of methyl methacrylate, 67% by mass of polymethyl methacrylate, 0.3% by mass of plasticizer and 0.7% by mass of coloring agent, pouring the stirred viscous slurry M into a mold, pouring the viscous slurry M with the thickness of 10 cm, then carrying out polymerization at the temperature of 10 ℃, putting the viscous slurry M into an autoclave after polymerizing for 50 minutes and forming a hard film on the surface, sequentially carrying out low-temperature polymerization at the temperature of 40 ℃ in the autoclave, carrying out medium-temperature polymerization at the polymerization time of 3 hours and 70 ℃, carrying out high-temperature polymerization at the polymerization time of 3 hours and 100 ℃, keeping the pressure at 20 ℃ after the viscous slurry M completes the polymerization reaction, then opening the autoclave, taking out the crystal A and polishing; the pressure parameter of the autoclave is 0.6 MPa;
2) printing the image on the UV transfer printing paste by a UV printer;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp, wherein the figure is 3;
4) tearing off after the shadowless glue on the image is completely dried within 10 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and (3) pouring viscous slurry M on the surface of the crystal A printed with the image, as shown in figure 4, then performing polymerization at the temperature of 10 ℃, and then putting the crystal A into the autoclave again to perform low-temperature polymerization, medium-temperature polymerization and high-temperature polymerization in the step 1), and finally obtaining a crystal finished product B with the image, as shown in figure 5.
Specifically, the hardness of the finished product B of the spar can be improved by adding the plasticizer.
Example 3
The embodiment provides a method for preparing a spar image by using polymethyl methacrylate, which comprises the following steps:
1) taking 35% by mass of methyl methacrylate, 64% by mass of polymethyl methacrylate, 0.4% by mass of plasticizer, 0.3% by mass of coloring agent and 0.3% by mass of benzoyl peroxide, pouring the stirred viscous slurry M into a mold, wherein the pouring thickness is 25 cm, then carrying out polymerization at the temperature of 20 ℃, putting the viscous slurry M into an autoclave after polymerizing for 60 minutes and forming a hard film on the surface, sequentially carrying out low-temperature polymerization at the temperature of 50 ℃ in the autoclave, carrying out medium-temperature polymerization at the temperature of 5 hours and 89 ℃, carrying out high-temperature polymerization at the temperature of 4 hours and 110 ℃, carrying out polymerization for 9 hours, keeping the pressure to 10 ℃ after the viscous slurry M finishes polymerization reaction, then opening the autoclave, taking out the spar A and polishing; the pressure parameter of the autoclave is 0.8 MPa;
2) printing the image on the UV transfer printing paste by a UV printer;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp;
4) tearing off after the shadowless glue on the image is completely dried within 20 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and (3) pouring viscous slurry M on the surface of the crystal A printed with the image, then polymerizing at the temperature of 20 ℃, and then putting the crystal A into the autoclave again to perform low-temperature polymerization, medium-temperature polymerization and high-temperature polymerization in the step 1), thereby finally obtaining the crystal finished product B with the image.
Example 4
The embodiment provides a method for preparing a spar image by using polymethyl methacrylate, which comprises the following steps:
1) 39 mass percent of methyl methacrylate, 60 mass percent of polymethyl methacrylate, 0.8 mass percent of coloring agent and 0.2 mass percent of benzoyl peroxide are taken to be stirred, the stirred viscous slurry M is poured into a mold, the pouring thickness is 60 cm, then polymerization at the temperature of 38 ℃ is carried out, the viscous slurry M is put into an autoclave after polymerization for 70 minutes and a layer of hard film is formed on the surface, low-temperature polymerization at the temperature of 52 ℃ is carried out in the autoclave in sequence, medium-temperature polymerization at the polymerization time of 8 hours and 99 ℃ is carried out, high-temperature polymerization at the polymerization time of 4 hours and 119 ℃ is carried out, the polymerization time is 9 hours, the pressure maintaining temperature is 0 ℃ after the viscous slurry M completes the polymerization reaction, then the autoclave is opened, and the crystal A is taken out and polished; the pressure parameter of the autoclave is 1 MPa;
2) printing the image on the UV transfer printing paste by a UV printer;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp;
4) tearing off after the shadowless glue on the image is completely dried within 25 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and (3) pouring viscous slurry M on the surface of the crystal A printed with the image, then polymerizing at 38 ℃, and then putting the crystal A into the autoclave again to perform low-temperature polymerization, medium-temperature polymerization and high-temperature polymerization in the step 1), thereby finally obtaining the crystal finished product B with the image.
Example 5
The embodiment provides a method for preparing a spar image by using polymethyl methacrylate, which comprises the following steps:
1) stirring 30 mass percent of methyl methacrylate, 69 mass percent of polymethyl methacrylate, 0.7 mass percent of plasticizer and 0.3 mass percent of benzoyl peroxide, pouring the stirred viscous slurry M into a mold, pouring the viscous slurry M with the thickness of 70 cm, then carrying out polymerization at the temperature of 40 ℃, putting the viscous slurry M into an autoclave after 70 minutes of polymerization and forming a layer of hard film on the surface, sequentially carrying out low-temperature polymerization at the temperature of 55 ℃ in the autoclave, carrying out medium-temperature polymerization at the polymerization time of 8 hours and 99 ℃, carrying out high-temperature polymerization at the polymerization time of 5 hours and 120 ℃, carrying out polymerization for 10 hours, keeping the pressure at the temperature of 10 ℃ after the viscous slurry M finishes polymerization reaction, then opening the autoclave, taking out the crystal A and polishing; the pressure parameter of the autoclave is 1.1 MPa;
2) printing the image on the UV transfer printing paste by a UV printer;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp;
4) tearing off after the shadowless glue on the image is completely dried within 30 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and (3) pouring viscous slurry M on the surface of the crystal A printed with the image, then polymerizing at the temperature of 40 ℃, and then putting the crystal A into the autoclave again to perform low-temperature polymerization, medium-temperature polymerization and high-temperature polymerization in the step 1), thereby finally obtaining the crystal finished product B with the image.
Claims (7)
1. A method for preparing a spar image by utilizing polymethyl methacrylate is characterized by comprising the following steps:
1) stirring methyl methacrylate, polymethyl methacrylate and an auxiliary agent, pouring the stirred viscous slurry M into a mold, putting the mold into an autoclave for polymerization to obtain spar A, and polishing;
2) printing the image on the UV transfer printing paste by a UV printer;
3) coating shadowless glue on the surface of the crystal stone A, pasting and printing UV transfer printing on the crystal stone A, and then carrying out photocuring by using a UV ultraviolet fixing lamp;
4) tearing off the UV transfer printing paste after the shadowless glue on the image is completely dried within 10-30 minutes;
5) preparing the viscous slurry M in the step 1) again;
6) and pouring viscous slurry M on the surface of the crystal A printed with the image, and putting the crystal A into the autoclave again for polymerization to obtain a crystal finished product B with the image.
2. The method for preparing a spar image from polymethyl methacrylate according to claim 1, wherein the step of polymerizing the viscous slurry M in step 1) and the step of pouring the viscous slurry M on the spar a are the same, and the step of polymerizing is:
A. polymerizing the viscous slurry M at the temperature of 0-40 ℃, putting the viscous slurry M into an autoclave after polymerizing for 50-70 minutes and forming a hard film on the surface, and completing polymerization reaction of the viscous slurry M under the heating condition; the pressure parameter of the autoclave is 0.4-1.4 MPa;
B. and opening the autoclave after the pressure maintaining temperature reaches 0-40 ℃ after the polymerization is finished.
3. The method for preparing a spar image by using polymethyl methacrylate according to claim 2, wherein the autoclave heating conditions are low temperature polymerization, medium temperature polymerization, high temperature polymerization; the low-temperature polymerization temperature is 40-55 ℃, and the polymerization time is 2-8 hours; the medium-temperature polymerization temperature is 66-99 ℃, and the polymerization time is 3-5 hours; the high-temperature polymerization temperature is 100-120 ℃, and the polymerization time is 8-10 hours.
4. The method of claim 1, wherein the mass percent of the methyl methacrylate is 30-39%, the mass percent of the methyl methacrylate is 60-69%, and the mass percent of the auxiliary agent is 0-1%.
5. The method for preparing a spar image from polymethyl methacrylate as claimed in claim 4, wherein the auxiliary agent comprises one or more of a plasticizer, a coloring agent, and benzoyl peroxide.
6. The method of claim 5, wherein the mass percentages of the methyl methacrylate, the polymethyl methacrylate, the plasticizer and the coloring agent are 32%, 67%, 0.3% and 0.7%, respectively.
7. The method of claim 4, wherein the amount of the methyl methacrylate is 31% and the amount of the methyl methacrylate is 69% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210621911.0A CN114851761A (en) | 2022-06-02 | 2022-06-02 | Method for preparing crystal image by using polymethyl methacrylate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210621911.0A CN114851761A (en) | 2022-06-02 | 2022-06-02 | Method for preparing crystal image by using polymethyl methacrylate |
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