A color fixing and shape preserving method for white flowers based on resin embedding

Abstract

The present invention belongs to the technical field of plant three-dimensional specimen production, and is about a method for fixing color and preserving shape of white flowers based on resin embedding. The specific steps of the present invention are: collecting white flowers, fixing color and preserving shape, drying, fixing in a mold together with epoxy resin AB glue, and drying naturally, so as to obtain a plant three-dimensional specimen of white flowers that will not fade or change color. The method of the present invention can effectively solve the problem that resin specimens of white flowers are prone to yellowing, browning, and transparency, while maintaining the original characteristics and natural form of fresh flowers, and greatly improves and enhances the production technology of plant three-dimensional specimens.

Description

Technical Field

[0001] The invention relates to a method for preserving the shape and color of plants, belongs to the technical field of making three-dimensional plant specimens, and is a method for preserving the color and shape of white flowers based on resin embedding. Background Art

[0002] Plant three-dimensional specimens can better present the three-dimensional form of plants. They are the best way to preserve plant materials for a long time and are also teaching aids. Traditional plant specimens are mostly wax leaf specimens, which are often difficult to carry and cannot maintain the original color of the specimens for a long time. In contrast, crystal glue plant specimens are easy to operate, low-cost, easy to carry, and can show the three-dimensional form of plants in many ways. They are also highly ornamental and are also a rare handicraft.

[0003] Crystal glue is actually solidified from epoxy resin. It is characterized by high transparency and hardness. It is often used for surface decoration of products such as badges and nameplates, and for artwork processing. In recent years, it has been used for embedding specimens such as plant organs and insects. It is widely used in scientific and educational exhibits, popular science education, plant culture displays, natural cognition among primary and secondary school students, nature education, development of youth handicraft classes, and nature curriculum design.

[0004] In the existing crystal glue-dried plant specimen production technology, the color fixation and shape preservation of plant materials are the biggest technical difficulties, especially for white flowers. The white color in the flowers is due to the presence of bubbles in the cell fluid that reflect all the light, making the flowers white, but the flowers must be dried when making specimens, and the bubbles disappear, making the white flowers transparent. In addition, the flowers are prone to browning and softening when dehydrated, and the color turns yellow and the shape is not easy to maintain. Therefore, the method of color fixation and shape preservation of white flowers is an important process for the production of three-dimensional plant specimens, and it is also a technical problem that has been pending. The present invention has developed a solid color preservative, wherein the addition of salicylic acid prevents the occurrence of browning, and the joint treatment of ethanol and salicylic acid keeps it in a more upright state. Summary of the invention

[0005] The purpose of the present invention is to provide a method for color fixation and shape preservation of white flowers based on resin embedding in view of the problems existing in the prior art. Color fixation: maintaining the white color of petals and preventing them from browning and waterlogging. Shape preservation: filling the cells of petals, maintaining the three-dimensional sense and preventing dehydration and shriveling.

[0006] The purpose of the present invention can be achieved by the following scheme:

[0007] The present invention provides a color-fixing and shape-preserving method for white flowers based on resin embedding, and the color-fixing and shape-preserving method comprises the following steps:

[0008] (1) placing white flowers in a color-fixing and shape-preserving solution comprising ethanol and salicylic acid for soaking;

[0009] (2) drying the soaked white flowers;

[0010] (3) After the dried white flowers are fixed, slowly pour in the curing resin, and after solidification, take out to obtain the white flowers with fixed color and shape.

[0011] Specifically, in step (1), the white flowers are whole white flowers that are picked, and white flowers with beautiful shapes, complete appearances, and in full bloom are selected. Before soaking the white flowers, clean the dust and wipe them dry.

[0012] Specifically, in step (1), the color-fixing and shape-preserving liquid is an aqueous solution including ethanol and salicylic acid; the volume fraction of ethanol is 60% to 90%, and the mass fraction of salicylic acid is 10% to 20%. The volume fraction of ethanol is preferably 80%, and the mass fraction of salicylic acid is preferably 20%. Compared with low-concentration ethanol, the present invention uses high-concentration ethanol and tries several different flower materials, all of which have good effects. The color-fixing and shape-preserving liquid used in the present invention can prevent the white flowers from becoming transparent due to the disappearance of bubbles when the flowers are dried; at the same time, it will not make the flowers easily brown and soften when dehydrated, and the color will not turn yellow and the shape will not be easy to maintain.

[0013] Specifically, in step (1), the soaking time is 12 to 48 hours, preferably 24 hours. The petals are soaked until they are completely soaked and slightly transparent to ensure shape and color retention. After soaking, the surface solution of the flowers needs to be wiped off.

[0014] Specifically, in step (2), the drying process is specifically as follows: completely burying the white flowers in the flower desiccant until the surface is completely dry and then taking them out. The drying process takes 12 to 48 hours, preferably 24 hours. The flower desiccant is one of silica gel and quicklime. Natural drying, wind drying, and heating drying are prone to oxidation and browning, and desiccant drying is preferred.

[0015] Specifically, in step (2), the white flowers are inverted before the drying process to drain the water. The inversion time is 60 to 180 minutes. After soaking, the white flowers are arranged in shape and then inverted, and the inverted flowers are left standing for a while to completely drain the water.

[0016] Specifically, in step (3), the white flowers are fixed by first fixing the white flowers to the bottom of the mold using UV glue. The flowers are fixed in the mold to prevent the white flowers from floating up after the epoxy resin mixed glue is poured in. The white flowers are first fixed to the bottom of the mold using UV glue, and then the epoxy resin is poured in to fix them.

[0017] Specifically, in step (3), the curing resin includes epoxy resin A glue and curing agent B glue, the epoxy resin includes bisphenol A epoxy resin, and the curing agent is a compound containing active hydrogen; the curing resin is poured by mixing the epoxy resin A glue and the curing agent B glue evenly, and then slowly pouring them into the mold. The curing resin needs to be mixed and stirred evenly to avoid being unable to solidify and form; the epoxy resin AB glue should be poured into the mold slowly to avoid bubbles.

[0018] Salicylic acid in the present invention mainly plays a role in color fixation, and ethanol mainly plays a role in shape preservation. Color fixation and shape preservation in the present invention are for white petals, which are different from leaves (different organ structures have different characteristics), so the applicable treatment methods are different. Conventional leaves are green, and because they contain chlorophyll, color preservation is actually protection of chlorophyll, while white is because petals contain bubbles (other colors stabilize the color by stabilizing pH, etc., affecting the stability of pigments), there is no chlorophyll and other pigment substances, and it is particularly prone to browning and discoloration, so color preservation is actually to prevent browning.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The method for fixing the color and preserving the shape of white flower resin specimens of the present invention can produce pure white three-dimensional flower specimens, which can be used as teaching tools or made into handicrafts;

[0021] (2) Extend the shelf life of white specimens, i.e., prevent them from turning brown or yellow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 These are pictures of plant specimens processed by Examples 1-4 of the present invention;

[0024] Figure 2 This is a comparison diagram after the treatment of Comparative Example 1 of the present invention;

[0025] Figure 3 This is a comparison diagram after the treatment of Comparative Example 2 of the present invention;

[0026] Figure 4 The figure is a schematic diagram of color card comparison of comparative examples 1 and 2 of the present invention. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The following examples are implemented on the premise of the technical solution of the present invention, provide detailed implementation methods and specific operation processes, and will help those skilled in the art to further understand the present invention. It should be pointed out that the protection scope of the present invention is not limited to the following embodiments, and several adjustments and improvements made under the premise of the concept of the present invention all belong to the protection scope of the present invention.

[0028] Example 1

[0029] Select a white rose with beautiful shape and complete appearance, soak it in a 20% salicylic acid aqueous solution (containing 80% ethanol by volume), take it out after soaking for 24 hours, absorb the residual solution on the surface with a dry paper towel, turn the rose upside down and let it stand for 60 minutes, adjust the shape and turn it upside down in a silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dry, apply UV glue on the pedicel and fix it to the bottom of the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, and demold it after solidification. Figure 1 As shown, the rose petals remain in bloom, the petals are white without any browning, and the color number is 7534C according to the color card comparison.

[0030] Example 2

[0031] Select a white dendrobium with beautiful shape and complete appearance, soak it in a 20% salicylic acid aqueous solution (containing 80% ethanol by volume), take it out after soaking for 24 hours, absorb the residual solution on the surface with a dry paper towel, turn the dendrobium upside down for 60 minutes, adjust the shape and turn it upside down in a fresh flower silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it in the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio is 3:1) and slowly pour it along the edge of the mold, and demold it after solidification. Figure 1 As shown, the petals of the Dendrobium orchid remain in a blooming posture, the petals are white and there is no browning.

[0032] Example 3

[0033] Select a white Lantana with beautiful shape and complete appearance, soak it in a 20% salicylic acid aqueous solution (containing 80% ethanol by volume), take it out after soaking for 24 hours, absorb the residual solution on the surface with a dry paper towel, turn the Lantana upside down for 60 minutes, adjust the shape and turn it upside down in a fresh flower silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it in the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio is 3:1) and slowly pour it along the edge of the mold, and demold it after solidification. Figure 1 As shown, the Lantana petals remain in bloom, the petals are white and there is no browning.

[0034] Example 4

[0035] Select a white chrysanthemum with beautiful shape and complete appearance, soak it in a 20% salicylic acid solution (containing 80% ethanol by volume) for 24 hours, take it out, absorb the residual solution on the surface with a dry paper towel, turn the chrysanthemum upside down for 60 minutes, adjust the shape and turn it upside down in a fresh flower silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dry, apply UV glue on the pedicel and fix it in the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio is 3:1) and slowly pour it along the edge of the mold, and demold it after solidification. Figure 1 As shown, the chrysanthemum petals remain in bloom, the petals are white, and there is no browning. The color number is 7527C according to the color card comparison.

[0036] Example 5

[0037] Select a white chrysanthemum with beautiful shape and complete appearance, soak it in a 10% salicylic acid aqueous solution (containing 80% ethanol by volume), take it out after soaking for 12 hours, absorb the residual solution on the surface with a dry paper towel, turn the chrysanthemum upside down for 120 minutes, adjust the shape and turn it upside down in a fresh flower quicklime desiccant, and bury it completely in the desiccant for 12 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it in the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, demoulding after solidification. The chrysanthemum petals remain in a blooming posture, the petals are white and slightly browned.

[0038] Example 6

[0039] Select a white chrysanthemum with beautiful shape and complete appearance, soak it in 20% salicylic acid solution (containing 60% ethanol by volume), take it out after soaking for 48 hours, absorb the residual solution on the surface with a dry paper towel, turn the chrysanthemum upside down for 180 minutes, adjust the shape and put it upside down in the fresh flower quicklime desiccant, and bury it completely in the desiccant for 48 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it in the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, demoulding after solidification. The petals of the chrysanthemum become soft, it is not easy to maintain the blooming posture, and the petals are white.

[0040] Example 7

[0041] Select a white chrysanthemum with beautiful shape and complete appearance, soak it in a 20% salicylic acid aqueous solution (containing 90% ethanol by volume), take it out after soaking for 48 hours, absorb the residual solution on the surface with a dry paper towel, turn the chrysanthemum upside down for 180 minutes, adjust the shape and turn it upside down in a fresh flower quicklime desiccant, and bury it completely in the desiccant for 48 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it in the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, demoulding after solidification. The chrysanthemum petals remain in a blooming posture, and the petals are white.

[0042] Comparative Example 1

[0043] Two white chrysanthemums with similar morphology and freshness were selected, one of which was immersed in an 80% ethanol solution as a control, and the other was immersed in a solution containing 20% ​​salicylic acid and 80% ethanol. After immersion for 24 hours, the flowers were taken out and the residual solution on the surface was absorbed with a dry paper towel. The two chrysanthemums were embedded in epoxy resin glue (bisphenol A epoxy resin and its curing agent, with a volume ratio of 3:1) according to the method of Example 1, and taken out for observation after solidification. Figure 2 , 4 As shown, the white chrysanthemum treated with only 80% ethanol maintained its flower shape and posture, but its petals were completely browned, and the color number was 7556C according to the color card comparison. The chrysanthemum treated with 80% ethanol + 20% salicylic acid not only maintained its flower shape and posture, but also did not have browning on its petals, and the color number was 7527C according to the color card comparison. Therefore, the color fixing and shape preserving liquid in the present invention has a good color fixing and shape preserving effect on white flowers.

[0044] Comparative Example 2

[0045] A white rose was selected, and the petals were placed in liquids containing different color-protecting substances, including 20% ​​salicylic acid aqueous solution, 20% citric acid aqueous solution, 20% ascorbic acid aqueous solution and water (control group) by mass fraction. After soaking for 24 hours, the petals were taken out, and the residual solution on the surface was absorbed with a dry paper towel, and the petals were placed in a flower desiccant to dry. After they were completely dried, they were taken out and embedded in epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, with a volume ratio of 3:1). After solidification, they were taken out for observation. Figure 3 , 4As shown in the figure, soaking in different color-protecting solutions had little effect on the color of the petals, but after dehydration and drying, the petals of the control group turned brown obviously, and the petals treated with salicylic acid also turned brown. After embedding with epoxy resin glue, except for the petals treated with 20% salicylic acid, which showed high-purity white, the other groups showed browning, transparency, deformation and other phenomena. After 4 months of embedding, only the petals treated with 20% salicylic acid still maintained their white color and the curvature of the petals, while the other treatment groups all turned brown. This shows that 20% salicylic acid has a very good color-protecting and shape-preserving effect on white flowers, and can prolong the storage time of specimens.

[0046] Comparative Example 3

[0047] Select a white rose with beautiful shape and complete appearance, soak it in 20% salicylic acid + 20% citric acid solution (containing 80% ethanol by volume), take it out after soaking for 24 hours, absorb the residual solution on the surface with a dry paper towel, put the rose upside down and let it stand for 60 minutes, adjust the shape and put it upside down in a silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it to the bottom of the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, demold it after solidification. Compared with the treatment with only 20% salicylic acid, the petals appear brown and transparent.

[0048] Comparative Example 4

[0049] Select a white rose with beautiful shape and complete appearance, soak it in 20% salicylic acid + 20% ascorbic acid solution (containing 80% ethanol by volume), take it out after soaking for 24 hours, absorb the residual solution on the surface with a dry paper towel, put the rose upside down and let it stand for 60 minutes, adjust the shape and put it upside down in a silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it to the bottom of the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, demold it after solidification. Compared with the treatment with only 20% salicylic acid, the petals appear brown and transparent.

[0050] Comparative Example 5

[0051] Select a white rose with beautiful shape and complete appearance, soak it in a 20% salicylic acid solution (containing 40% ethanol by volume), take it out after soaking for 24 hours, absorb the residual solution on the surface with a dry paper towel, put the rose upside down and let it stand for 60 minutes, adjust the shape and put it upside down in a silica gel desiccant, and bury it completely in the desiccant for 24 hours, take it out after it is completely dried, apply UV glue on the pedicel and fix it to the bottom of the mold, mix epoxy resin AB glue (bisphenol A epoxy resin and its curing agent, volume ratio of 3:1) and slowly pour it along the edge of the mold, demold it after solidification. Compared with the treatment with 20% salicylic acid solution (containing 80% ethanol), the petals become soft and cannot maintain the blooming state.

[0052] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A method for color fixation and shape preservation of white flowers based on resin embedding, characterized in that: The color fixing and shape preserving method comprises the following steps: (1) Place the white flowers in a color-fixing and shape-preserving solution and soak them; (2) Drying the soaked white flowers; (3) After the dried white flowers are fixed, slowly pour the curing resin into them, and after solidification, take them out to obtain the resin-embedded white flowers with fixed color and shape; In step (1), the white flowers are whole white flowers that have been picked, and the white flowers that are beautiful in shape, complete in appearance, and in full bloom are selected; In step (1), the color-fixing and shape-preserving solution is an aqueous solution of ethanol and salicylic acid; in the color-fixing and shape-preserving solution, the volume fraction of ethanol is 80% to 90%, and the mass fraction of salicylic acid is 20%; In step (1), the soaking treatment time is 24 to 48 hours.

2. The color fixing and shape preserving method according to claim 1, characterized in that: In step (2), the drying process specifically includes: completely burying the white flowers in the flower desiccant until the surface is completely dry and then taking them out.

3. The color fixing and shape preserving method according to claim 2, characterized in that: The flower desiccant is one of silica gel and quicklime.

4. The color fixing and shape preserving method according to claim 1, characterized in that: In step (2), the white flowers are turned upside down before the drying process to control the moisture.

5. The color fixing and shape preserving method according to claim 1, characterized in that: In step (3), the curing resin includes epoxy resin A glue and curing agent B glue. The curing resin is poured by mixing the epoxy resin A glue and the curing agent B glue evenly and then slowly pouring them into the mold.

Images