CN113116073A - Preparation method of resin embedded specimen - Google Patents
Preparation method of resin embedded specimen Download PDFInfo
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- CN113116073A CN113116073A CN202110332572.XA CN202110332572A CN113116073A CN 113116073 A CN113116073 A CN 113116073A CN 202110332572 A CN202110332572 A CN 202110332572A CN 113116073 A CN113116073 A CN 113116073A
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- isolation layer
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- 239000011347 resin Substances 0.000 title claims abstract description 121
- 229920005989 resin Polymers 0.000 title claims abstract description 121
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000011265 semifinished product Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 20
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 7
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 7
- 238000007517 polishing process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 11
- 239000012467 final product Substances 0.000 abstract 1
- 238000012797 qualification Methods 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000000741 silica gel Substances 0.000 description 9
- 229910002027 silica gel Inorganic materials 0.000 description 9
- 239000004744 fabric Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C5/00—Chairs of special materials
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
Abstract
The invention discloses a preparation method of a resin embedded specimen, which comprises the following steps: providing a specimen and a mold; forming an isolation layer on the inner surface of the mold, and curing the isolation layer; fixing the specimen in the mold; injecting liquid resin into the mold, heating to solidify the resin, heating to soften the isolation layer, combining the solidified resin and the softened isolation layer, and cooling to obtain a semi-finished product; removing the mold; and removing the isolation layer to obtain the resin embedded specimen. The final product formed by the invention contains no air bubbles in the resin and has high product qualification rate.
Description
Technical Field
The invention relates to the technical field of preparation of resin embedded specimen industrial products, and particularly relates to a preparation method of a resin embedded specimen.
Background
The industrial product formed by embedding animal and plant specimens in transparent or semitransparent resin has aesthetic feeling from nature, is suitable for manufacturing artworks such as ornaments, is also suitable for preparing furniture with natural aesthetic feeling such as tables, chairs, tea tables and the like, and forms other articles for daily use with natural aesthetic feeling, such as lamps and lanterns and the like.
In the prior art, liquid resin is injected into a mold fixed with a specimen, the resin is cured, the mold is removed, and the cured resin is further polished to obtain a product of the resin embedded specimen.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a preparation method of a resin embedded specimen, which avoids the generation of bubbles in resin.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation method of a resin embedded specimen comprises the following steps:
providing a specimen and a mold;
forming an isolation layer on the inner surface of the mold, and curing the isolation layer;
fixing the specimen in the mold;
injecting liquid resin into the mold, heating to solidify the resin, simultaneously enabling the isolation layer to be softened and then combined with the resin, and cooling and demolding to obtain a semi-finished product;
and removing the isolation layer positioned on the outer layer of the semi-finished product to obtain the resin embedded specimen.
The embodiment of the invention has the following beneficial effects:
the isolation layer is arranged in the embodiment of the invention, the isolation layer is softened while the resin is cured by heating, the softened isolation layer enhances the bonding strength with the cured resin, the cured resin is protected, the gas in the resin is prevented from diffusing outwards from the isolation layer, the gas is forced to diffuse outwards only from a place without the isolation layer, for example, the gas is discharged from a liquid injection port of a mold, and the bubbles formed in the resin are prevented from influencing the beauty of industrial products of resin embedded specimens.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a schematic structural diagram of a resin-embedded specimen chair manufactured by a method for manufacturing a resin-embedded specimen according to an embodiment of the present invention.
FIG. 2 is a photograph of the resin structure obtained in comparative example 1.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a photograph of the resin structure obtained in comparative example 2.
Fig. 5 is a partially enlarged view of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention discloses a preparation method of a resin embedded specimen, which is characterized by comprising the following steps:
step S1: a specimen and a mold are provided.
The specimen can be a plant specimen, an animal specimen or a resin specimen with a certain shape, and the specimen can be an embedded object with any shape.
The plant specimen may be any plant specimen, for example, a root, branch, leaf, branch leaf, grass, flower, fruit, etc., and the plant specimen may be a specimen at any stage of the plant life cycle, for example, a collected green branch and leaf, or a branch and leaf dropped after drying, etc.
In order to prevent the plant specimen from discoloring in the resin, the plant specimen may be a plant specimen treated with at least one of a color retention agent treatment, a preservative treatment and a drying treatment.
Among the product of present resin embedding plant specimen, the product is regular shape usually, and inside sample is heavier sample usually, for example one section stump, root, thicker branch etc. because the sample is heavier, pours into resin curing process into, and the difficult position that moves of sample, if adopt lighter leaf, flower, petal etc. when the sample, pours into resin curing process into, because the sample is lighter, easily floats on the resin surface, can't reach the embedding effect. In order to overcome the problems, the invention adopts a special resin, provides a higher curing speed, enables the liquid resin to soak the specimen and be cured quickly at the same time, and avoids the condition that the specimen floats on the surface of the resin due to long curing time. Thus, very light specimens can be embedded with the resin of the present invention, as shown in fig. 1, resin-embedded plant specimens including tree branches also include lighter leaves. In this embodiment, in order to preserve the natural aesthetic sense of the plant specimen and to make the plant specimen in the resin not discolor for a long time, the plant specimen is preferably a dried-off branch and leaf plant specimen.
In one embodiment, the resin is preferably a thermosetting resin, i.e., the resin is cured by heating and is transparent or translucent after being cured, during the heating, the isolation layer is softened, and the resin is cured, so as to show the aesthetic feeling of the embedded specimen. The curing process of the thermosetting resin may be physical curing or chemical reaction curing, for example, a polymerization reaction occurs when a polymer monomer is heated to generate a solid polymer.
Further, in one embodiment, the thermosetting resin is a polymer monomer that polymerizes upon heating.
Further, in a specific embodiment, the polymer monomer that is polymerized by heating may be acrylate, may be one acrylate monomer, or may be a mixture of a plurality of acrylate monomers.
Specifically, the acrylate may be one or more selected from methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, 2-methyl methacrylate, and 2-ethyl methacrylate.
Further, in a specific embodiment, the resin raw material of the invention comprises the following components by mass percent:
30 to 70 percent of methyl methacrylate and 70 to 30 percent of butyl acrylate.
The resin raw material mixed with the acrylate not only has better fluidity so as to quickly embed the specimen, but also has better curing speed so as to quickly cure and prevent the lighter specimen from floating upwards.
The mold may be a relatively regular mold, such as a cube, plate, sphere, column, etc., or may be any irregular shape, such as a chair-type structure shown in fig. 1 in this embodiment.
For any irregular shape, in order to enable the mold to be demolded, it is preferable that the mold includes a flexible mold and a hard mold fixed outside the flexible mold for supporting the flexible mold in this embodiment. The hard mold may be composed of two or more hard mold units, and the soft mold includes two soft mold units. When the flexible mold is used for demolding any irregular shape, the specimen is fixed in the flexible mold, the flexible mold is assembled, the hard mold is fixed outside the flexible mold, liquid resin is injected into the flexible mold, and when the flexible mold is disassembled, the hard mold is disassembled firstly, and then the flexible mold is disassembled.
The soft mold can be a silica gel mold, and is soft and high temperature resistant.
The hard mould can be made of acrylic materials, and can also be made of steel materials, gypsum boards and the like.
Preferably, the soft mold and the hard mold are transparent molds, so that the internal resin curing process can be observed conveniently.
Step S2: forming an isolation layer on the inner surface of the mold, and solidifying the isolation layer.
The effect of isolation layer is to prevent resin and mould direct contact, prevents that resin from corroding the mould on the one hand, the life of extension mould, and on the other hand, more importantly solves the problem that has the bubble among the prior art in the resin.
The formation of bubbles in the resin is caused by the gas entering the mold on the one hand and the heat released during the temperature-rising curing process on the other hand.
In the invention, by adding the isolating layer, the isolating layer is softened by heating in the process of heating and curing the resin, the softened isolating layer is tightly combined with the resin, so that bubbles cannot penetrate through the isolating layer to be discharged and can only be discharged from a place without the isolating layer.
In one embodiment, the barrier layer is a heat-softening resin, i.e., a resin that is softened by heating, and bonds to the resin after softening, thereby preventing air bubbles from being expelled from the interface between the barrier layer and the resin, and thus preventing air bubbles from forming in the resin. After the isolation layer and the resin are solidified, the isolation layer and the resin form a tightly combined whole.
Further, in one embodiment, the heat-softening resin may be Polyvinyl Alcohol (PVA), which has a glass transition temperature of about 90 ℃, has a high viscosity when being softened, can prevent bubbles from overflowing from the isolation layer, and has a high hardness after being cured, and can protect the resin located inside.
Step S3: the specimen is fixed in the mold.
The specimen may also be fixed by means of a non-colored thread. In the present invention, in order to avoid the exposure of the fixing threads from affecting the transparency and gloss of the resin, the present invention does not use any threads to fix the specimen. In the present invention, the special resin indicated in step S1 is used to provide a faster curing speed by heating and curing, so that the liquid resin can be quickly cured while infiltrating the specimen, thereby avoiding the case where the specimen floats on the surface of the resin due to the long curing time.
Step S4: and (3) injecting liquid resin into the mold, heating to solidify the resin, heating to soften the isolation layer, combining the solidified resin and the softened isolation layer, and cooling to obtain a semi-finished product.
Furthermore, in order to fully discharge the bubbles, in the process of heating and curing the resin, gas is also introduced into the die, and the pressure is increased to extrude the bubbles in the resin.
Since the softening temperature of the thermally softening resin is lower than the curing temperature of the resin coating the specimen, the thermally softening resin softens and bonds with the cured resin during the curing of the resin coating the specimen. After cooling, the bonding force between the thermal softening resin and the mold is smaller than that between the thermal softening resin and the resin coating the specimen, so that demolding is facilitated to obtain a semi-finished product.
In the embodiment, the temperature for heating and curing the resin is 80-120 ℃ and the time is 6-18 h.
Step S5: and removing the mold.
Step S6: and removing the isolation layer to obtain the resin embedded specimen.
In this step, the isolation layer hardness that obtains is great, and further, carries out mechanical polishing to the isolation layer, gets rid of the isolation layer. For example, the spacer layer is removed using an angle grinder.
Further, after the isolation layer is removed, the process of processing the resin embedded specimen by adopting a wet grinding and/or polishing process is also included, so that the surface smoothness and the glossiness of the resin are enhanced.
In particular, wet grinding may smooth out the deeper textures created by mechanical grinding, gradually brightening the surface, e.g., by wiping with sandpaper in water, gradually brightening the surface.
The polishing process increases the smoothness and the glossiness of the resin, improves the decoration of the surface and ensures that the obtained resin is crystal clear and bright.
Specifically, a selected pure cotton cloth wheel can be used for coating specific wax with strong oiliness (the pure cotton cloth wheel is required to be subjected to repeated polishing because the pure cotton cloth wheel is not electrified in the polishing process and does not generate heat to cause surface burn like a wool or fiber cloth wheel, the wax with high oiliness is used to be difficult to dust and has a bright polishing effect) until a desired glittering and translucent product like a crystal is obtained.
In the above-mentioned mechanical grinding, wet grinding and polishing processes, it is preferable to use strong light irradiation to find the problems of impurities, scratches, etc. of the resin, thereby solving them at once.
The following are specific examples.
Example 1
A resin-embedded specimen chair as shown in fig. 1 was manufactured.
1) Selecting fallen leaves and branches, oven drying in oven or hot sun, selecting the most beautiful shape, trimming excessive branches and leaves, and cleaning with detergent and blower to remove surface dirt.
2) And spraying or coating an isolation layer on the inner surface of the silica gel mold, and solidifying the isolation layer, wherein the isolation layer is polyvinyl alcohol.
3) Placing the specimen obtained in the step 1) into the silica gel mold obtained in the step 2), and sealing the silica gel mold.
4) The liquid resin is prepared from the following components in percentage by mass:
30% of methyl methacrylate and 70% of butyl acrylate.
Liquid resin is prepared according to the components and fully stirred to obtain the liquid resin.
5) And injecting the resin into the silica gel mold from the liquid injection port of the silica gel mold, and supporting the silica gel mold outside the silica gel mold by using a hard mold.
6) Pushing the mould in the step 5) into an oven, baking for more than 12 hours at 90 ℃, and adding nitrogen into the oven to increase pressure during baking so as to extrude bubbles in the resin out of the product. Naturally cooling for about 48 hours, and removing the hard die and the silica gel die.
7) Get rid of the product surface behind the mould and can form the crust like jade, the isolation layer promptly, adopt the angle grinder to grind off the isolation layer with the emery wheel, until exposing the resin, because the emery wheel can form a lot of dark recesses after polishing, it is difficult to get rid of directly to grind with abrasive paper water by hand, just at this time need polish the resin surface again with the fiber wheel, obtains comparatively smooth surface.
8) And wet grinding, namely firstly wiping with 300 # abrasive paper (the amount of work can be saved and dust cannot be raised because dust left during friction is taken away by water), and then sequentially using 600 # abrasive paper, 1200 # abrasive paper and 2000 # abrasive paper with different specifications to gradually polish the surface, so that the resin is gradually changed from white to transparent.
9) The polishing process comprises the steps of polishing a selected pure cotton cloth wheel with specific wax with strong oiliness (the pure cotton cloth wheel is required to be polished because the pure cotton cloth wheel is not electrified and does not generate heat to cause surface burn like a wool or fiber cloth wheel, the wax with the strong oiliness is used to be polished repeatedly because the wax with high oil content is not easy to ash, and the polishing effect is brighter) until a desired glittering and translucent product like a crystal is obtained.
In the processes of the steps 7), 8) and 9), strong light irradiation is required so as to find impurities, scratches and the like.
Example 2
The difference between the embodiment 2 and the embodiment 1 is that the liquid resin prepared in the step 4) comprises the following components in percentage by mass:
50% of methyl methacrylate and 50% of butyl acrylate.
The remaining procedures and parameters were the same as in example 1.
Example 3
The difference between the embodiment 3 and the embodiment 1 is that the liquid resin prepared in the step 4) comprises the following components in percentage by mass:
50% of methyl methacrylate and 50% of butyl acrylate.
The remaining procedures and parameters were the same as in example 1.
Example 4
Example 4 differs from example 1 in that the liquid resin prepared in step 4) comprises methyl methacrylate.
The remaining procedures and parameters were the same as in example 1.
Example 5
Example 5 differs from example 1 in that the liquid resin prepared in step 4) comprises butyl acrylate.
The remaining procedures and parameters were the same as in example 1.
Comparative example 1
In order to show the function of the barrier layer, comparative example 1 did not use a barrier layer, and the resin structure shown in fig. 2 (the plant specimen was not embedded in the resin for the purpose of observing bubbles clearly) was injection-molded using the method of example 1 and the same injection-molded resin composition, and fig. 3 is a partially enlarged view of fig. 2, and it can be seen that there are many bubbles on the surface.
Comparative example 2
Comparative example 2 is different from comparative example 1 only in that a separation layer is used, and the resin structure prepared is as shown in fig. 4, and fig. 5 is a partially enlarged view of fig. 4, and it can be seen that the surface has no bubbles.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A preparation method of a resin embedded specimen is characterized by comprising the following steps:
providing a specimen and a mold;
forming an isolation layer on the inner surface of the mold, and curing the isolation layer;
fixing the specimen in the mold;
injecting liquid resin into the mold, heating to solidify the resin, simultaneously enabling the isolation layer to be softened and then combined with the resin, and cooling and demolding to obtain a semi-finished product;
and removing the isolation layer positioned on the outer layer of the semi-finished product to obtain the resin embedded specimen.
2. The production method according to claim 1, wherein the separator is a heat-softening type resin.
3. The production method according to claim 2, wherein the heat-softening type resin is polyvinyl alcohol.
4. The production method according to any one of claims 1 to 3, wherein the resin is a thermosetting resin, and the resin is a transparent or translucent resin after being cured.
5. The method according to claim 4, wherein the resin is an acrylate.
6. The preparation method of claim 5, wherein the acrylate comprises the following components in percentage by mass:
30 to 70 percent of methyl methacrylate and 70 to 30 percent of butyl acrylate.
7. The method according to claim 1, wherein during the temperature rise for curing the resin, gas is introduced into the mold, and pressure is increased to remove bubbles in the resin.
8. The preparation method according to claim 7, wherein the temperature for raising the temperature to cure the resin is 80-120 ℃ and the time is 6-18 h.
9. The method for preparing a porous material according to claim 1, wherein the step of removing the separation layer comprises: and mechanically polishing to remove the isolation layer.
10. The method for preparing a resin-embedded specimen according to claim 9, further comprising a process of treating the resin-embedded specimen using a wet grinding and/or polishing process after removing the isolation layer.
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| CN202110332572.XA CN113116073A (en) | 2021-03-29 | 2021-03-29 | Preparation method of resin embedded specimen |
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| CN202110332572.XA CN113116073A (en) | 2021-03-29 | 2021-03-29 | Preparation method of resin embedded specimen |
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| CN113116073A true CN113116073A (en) | 2021-07-16 |
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