CN115466521A - Coffee grounds gel material and preparation method and application thereof - Google Patents
Coffee grounds gel material and preparation method and application thereof Download PDFInfo
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- CN115466521A CN115466521A CN202210949485.3A CN202210949485A CN115466521A CN 115466521 A CN115466521 A CN 115466521A CN 202210949485 A CN202210949485 A CN 202210949485A CN 115466521 A CN115466521 A CN 115466521A
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- C—CHEMISTRY; METALLURGY
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Abstract
The invention relates to an organic material, in particular to a coffee grounds gel material and a preparation method and application thereof, wherein the coffee grounds gel material comprises coffee grounds, gel and water, and the mass ratio of the coffee grounds to the gel is 1:15-5:1; the mass ratio of the gel to the water is 1:4-1:5; the method comprises the following steps: s1: mixing the gel with water, and heating to completely dissolve; s2: adding coffee grounds into the mixed solution obtained in the step S1, and stirring to uniformly mix the coffee grounds and the mixed solution; s3: and (3) naturally solidifying the mixed medium obtained in the step (S2) to obtain a novel product of the coffee grounds gel material. Compared with the prior art, the material disclosed by the invention is degradable, recyclable, green and pollution-free, is easy to mold and can be used in multiple fields.
Description
Technical Field
The invention relates to an organic material, in particular to a coffee grounds gel material and a preparation method and application thereof.
Background
With the rapid development of modern technologies, the material selection and the forming mode of artware and products have been increased exponentially in recent years. The chemical material industries such as styrene butadiene rubber, nitrile rubber, ABS resin, SBS thermoplastic elastomer, styrene butadiene latex and the like are rapidly developed, so that the number of products and artware in the market is greatly increased, and the diversity requirements of consumers are met. In addition, the forming process of products and artworks is improved along with the improvement of materials.
The traditional product molding process materials are basically chemical materials, are nondegradable and not environment-friendly, and have toxicity, and in addition, special steel molds are needed when the product is molded, so that the cost is high, the professional performance is strong, and special customization is needed; after the mold is fixed with the material for molding, the material is difficult to be recast and reshaped by a quick and simple means, which is not beneficial to the reprocessing of the product.
With the gradual influence on people's life caused by climate change, environmental pollution and other problems, degradable materials and recyclable materials are receiving more and more attention. Coffee is a popular beverage worldwide, however, after brewing is completed, most of the residual coffee grounds are directly discarded, which causes a great deal of waste. Although some shops and merchants have promoted the use of coffee grounds, most of them rely on the use of coffee grounds for absorption and adsorption, and there is only a report that the use of coffee grounds is expanded by further combining with other substances.
Disclosure of Invention
The invention aims to solve at least one of the problems, and provides a coffee grounds gel material, a preparation method and application thereof.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a coffee grounds gel material in a first aspect, which comprises coffee grounds, gel and water, wherein the mass ratio of the coffee grounds to the gel is 1:15-5:1; the mass ratio of the gel to the water is 1:4-1:5.
preferably, the coffee grounds are fine coffee grounds that have been screened through a screen. According to the fineness of coffee grounds required by different products, a gauze with 30-80 meshes can be selected to ensure that the products have good appearance and mechanical properties. When the coffee grounds are too coarse, the surface of the finally obtained product has granular feel, so that the appearance and the usability are influenced; the fine coffee grounds can weaken the pulling force generated between the coffee grounds and each other in the gel, and the mechanical property of the product is poor.
If the coffee grounds are too much, the mixing and bonding effect of the gel is lost, and the grounds are too much and the gel can be scattered and can not be integrated. If the gel is in excess, although the hardness can be guaranteed, it is relatively brittle and will also cause the final material to break without the force of pulling in the gel under pressure. Thus the mass ratio of coffee grounds to gel is selected to be maintained at 1:15-5: the product has the best effect.
Preferably, the coffee grounds gel material further comprises biodegradable materials other than coffee grounds. The biodegradable material may be rice paper, plant fiber, hair, etc. The biodegradable material is further added into the gel, so that a supporting structure can be further formed on the basis of a supporting framework formed by coffee grounds, the hardness of the material is increased, and the appearance of a product is not influenced; and the material is degradable, so that the degradability of the product is not influenced. The amount of biodegradable material (other than coffee grounds) added is determined by the desired product hardness.
Preferably, the coffee grounds gel material further comprises a plant coloring agent. Plant coloring agent can be added according to the required product color, so that the final product presents various colors. The plant dye is a plant dye formed by extracting pigments from plants, is green and pollution-free, is non-toxic and harmless, and cannot influence the environmental protection property of the material.
Preferably, the gel is bone glue. The main component of the bone glue is the bone glue Ruan Yansheng protein, the natural organic material is green and pollution-free, and harmful substances are not generated in the decomposition process of the coffee grounds gel material. The bone glue has good bonding performance, high strength and less moisture, so that the bonding and shaping effects are good, and the coffee grounds gel material prepared by the bone glue has good strength; the bone glue is quick to dry, low in price and convenient to use, so that the processing time can be shortened, and the processing convenience is improved; the main component of the bone glue is the bone glue Ruan Yansheng protein, so that no harmful substances are generated in the decomposition process of the coffee grounds gel material. The mixed material obtained by matching the coffee grounds and the bone glue according to a certain proportion has the characteristics of translucency and strong hardness, and is an effect which can not be achieved by some resin materials. The hardness of the mixed material obtained by the proportion of more coffee grounds and less bone glue is higher, and the service life of the product prepared by the material is more than several times that of the material such as a common density board, resin and the like after proper surface protection treatment.
The coffee grounds gel material can be naturally dissolved to form water (rich in protein generated after dissolving bone glue) and coffee grounds precipitate after being steamed or soaked in hot water, and can be further used as a fertilizer for organic recycling.
In a second aspect of the invention, there is disclosed a method of preparing a coffee grounds gel material as defined in any one of the above, comprising the steps of:
s1: mixing the gel with water, and heating until the gel is completely dissolved;
s2: adding coffee grounds into the mixed solution obtained in the step S1, and stirring to uniformly mix the coffee grounds and the mixed solution;
s3: and (3) naturally solidifying the mixed medium obtained in the step (S2) to obtain the product of the coffee grounds gel material.
Preferably, in step S1, the gel is soaked for 1-2 h. The bone glue can be softened initially or fully by soaking so as to be conveniently mixed with water and heated and decocted.
Preferably, in step S1, the heating is water-proof boiling. The proper amount of water and bone glue (the mass ratio is 4:1-5:1) enables the bone glue to be quickly and sufficiently dissolved in the water in the processing process. If the water is excessive, the viscosity of the decocted bone glue becomes weak, and the setting time becomes long; if the amount of water is too small, the gel is too thick and difficult to mold or shape.
Preferably, the water-resisting boiling comprises three stages, wherein the time ratio of the first stage to the third stage is 2:5: the temperature of the first stage and the third stage is 50-70 ℃, and the temperature of the second stage is 100 ℃. After the gel is completely dissolved in water, the gel is usually in a syrup state or a paste state, and the gel can be conveniently poured or coated on a mold during subsequent solidification, so that the gel can be shaped and solidified according to the required shape. The viscosity of the mixed solution after decoction (namely, the time spent in the decoction) can be adjusted according to the required shaping hardness of the material. The heating temperature of the second stage is controlled at 100 ℃ to enable the massive gel to be quickly and fully gelatinized and avoid the poor bonding effect caused by insufficient softening of bone glue. And then, the temperature is reduced to 50-70 ℃ in the third stage, and the gelatinized gel is subjected to heat preservation, so that the gel is prevented from gradually losing liquid fluidity and becoming pasty due to too low temperature, and further being too thick to be subjected to subsequent casting or shaping. After the boiling is finished, the boiling state of the third stage can be continuously kept, namely, the boiling is continuously carried out with soft fire at 50-70 ℃ so as to ensure that the subsequent bone glue can keep the required state in the using process.
Preferably, in step S3, the natural solidification time is 15-90min according to the specific thickness.
The mass ratio of the coffee grounds to the gel is 1:15-1: and 5, the material is amber and translucent after being naturally solidified, the hardness of the material can be improved by continuously increasing the amount of the coffee grounds, and meanwhile, the effect of increasing aroma can be achieved.
The mass ratio of the coffee grounds to the gel is 3:1-5:1, the material is thick and opaque after natural solidification, the gel at the moment is equivalent to the function of glue, and the product has high hardness. Further, the shaping of the shape can be carried out through the shaping of the mould during natural solidification.
The material can be naturally solidified in the mould or on the surface of the mould according to the shape requirement of the product so as to be shaped. Because the material has small loss to the mold, the mold can be used as a silica gel mold, a wood mold or a paper mold, and the like; for products with complicated shapes, a soft material mold is more preferably used to facilitate mold opening after solidification. Further, since the gel has extremely high hardness after completely solidifying, the mold can be opened and removed in a half-dry state (in the case of incomplete solidification and some softening) as required. Because this material is green organic material, and is noncorrosive to just turn into solid-state by the liquid in the natural solidification process, no reaction, do not add, therefore can avoid need add the curing agent and take place chemical reaction like in the rubber materials solidification process, cause the loss by a wide margin of mould, consequently, the production process of this material has higher production economy.
In a third aspect of the invention, there is disclosed the use of a coffee grounds gel material as described in any one of the above in artwork, decorative furnishings, toy articles and furniture parts.
Compared with the prior art, the invention has the following beneficial effects:
1. the raw materials used by the material are gel (bone glue), water and coffee grounds which are natural and organic, and the obtained material is degradable, recyclable, green and pollution-free and meets the double-carbon requirement; in addition, the raw materials used for preparation are easy to obtain, the process steps are simple and feasible, mass preparation can be realized, and the method has good economy.
2. The material can be matched with a mold to be shaped and molded in the natural solidification process, and the proper mold is prepared according to the required shape and shape, so that the diversified market demands can be met. The material has low limit requirement on the die because of small loss of the die in the shaping and demolding processes, and can be applied to most dies on the market.
3. When the added amount of the coffee grounds in the material is small, the material mainly plays a role in structural support, and can effectively improve the hardness of a product after natural solidification; when the added amount of the coffee grounds is more, the gel is equivalent to the function of glue, so that the coffee grounds can form a whole and have higher strength. The product made of the material has excellent hardness.
4. Biodegradable materials except coffee grounds can be added according to the needs in the preparation process so as to adjust the needed hardness; and plant coloring agent can be added according to the needs to obtain the needed color, so the material has strong expansibility, can meet the requirements of various performances, appearances and the like of the market, and has good development prospect and popularization prospect.
5. The fine coffee grounds which are obtained by sieving the coffee grounds in the material through a gauze have certain effect of absorbing moisture, and can be used in combination with bone glue to expand the applicable range of the bone glue, relieve the deterioration process of the bone glue and improve the water resistance of the bone glue; therefore, when the material is decomposed, the material can be naturally decomposed into water and coffee grounds through high-temperature cooking or hot water soaking, and can be further used as a fertilizer to realize organic cycle.
6. The structure and the performance of the coffee grounds cannot be damaged in the preparation process of the invention, so the coffee grounds have various performances of the coffee grounds, for example, the final product prepared from the material has strong coffee fragrance, has an insect expelling effect to a certain extent, can adsorb peculiar smell, also has a certain antibacterial effect and the like, and the product prepared from the material has wide market prospect.
Drawings
FIG. 1 is a schematic flow chart of the production process of the present invention;
FIG. 2 is a diagram of a naturally solidified object in different molds;
FIG. 3 is a diagram showing a product obtained by the production method of the present invention;
FIG. 4 is a schematic representation of another product made by the manufacturing process of the present invention;
FIG. 5 is a pictorial representation of the use of the material of the present invention in a decorative trim;
FIG. 6 is a pictorial representation of the use of the material of the present invention in an artwork;
FIG. 7 is a pictorial representation of a material dyed with different plant dyes;
FIG. 8 is a pictorial representation of the demolded material of the present invention;
FIG. 9 is a pictorial representation of the use of the material of the present invention in another decorative trim piece;
FIG. 10 is a pictorial representation of the use of the material of the present invention in a variety of decorative furnishings.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The materials used in the following examples were selected from commercially available products that can be obtained conventionally by those skilled in the art.
A method of preparing a coffee grounds gel material, as shown in fig. 1, comprising the steps of:
s1: and (3) mixing the gel soaked for 1-2h with water according to the weight ratio of 1:4-1:5, and decocting in water until the mixture is completely dissolved;
s2: mixing the coffee grounds in a ratio of 1:15-5:1, adding the mixture into the mixed solution obtained in the step S1, and stirring to uniformly mix the mixture;
s3: and (3) naturally solidifying the mixed medium obtained in the step (S2) for 15-90min to obtain the coffee grounds gel material.
Wherein, water proof system of stewing includes three stages, and the time ratio of first stage, second stage and third stage is 2:5: the temperature of the first stage and the third stage is 50-70 ℃, and the temperature of the second stage is 100 ℃.
Example 1
Gel pretreatment: selecting proper amount of bone glue, cleaning and soaking for 2h.
Boiling the gel: the pretreated gel was mixed at a ratio of 1:4, mixing with water, putting into a decocting utensil, and decocting with slow fire in a water-proof way. The specific decocting method comprises the steps of firstly carrying out slow fire (about 50-70 ℃), then carrying out medium fire (about 100 ℃), and then carrying out slow fire (about 50-70 ℃), wherein the time is 10 minutes, 25 minutes and 10 minutes in sequence (the time ratio is 2. Decocting the gel and water until the gel is completely dissolved (preferably in syrup or paste), and taking out for use.
Mixing coffee grounds: mixing coffee grounds with gel according to the mass ratio of 1:15-1:5, adding the mixture into the decocted mixed solution, and continuously stirring to ensure that the mixture is fully fused.
Brushing glue and shaping: selecting a proper mold according to the shape of the final product, introducing the adjusted mixed medium into the mold, waiting for natural solidification for 15-90min (the specific time is related to the thickness of the mixed medium, namely the thickness of the product to be manufactured, and the time can be adjusted according to needs) as shown in figure 2, and then demolding (demolding can be carried out in a semi-dry state according to needs).
Finishing: and taking out the product, and correspondingly polishing and repairing the finished product to finally form the designed shape.
The physical diagram of the product obtained in this example is shown in fig. 3, and 3 different molds are selected to obtain 3 different shapes. In fig. 3, the coffee grounds are in sequence from left to right: gel =1: 5. 1:10 and 1: the products prepared by the 15 components are amber and translucent, the color of the left side is darker than that of the right side (the dosage of the coffee grounds is larger), and the right side is more transparent than that of the left side.
The leftmost product in fig. 3 is formed by pouring the mixed medium into a mold and solidifying, and the two products on the middle and right sides are formed by multi-level brush coating and laminating on the surface of the mold (specifically, a layer is coated on the surface of the mold, and after solidification, the brush coating is carried out, and the final product is formed by repeating the processes for multiple times).
Through hardness experiment tests, the hardness of the semitransparent mixed medium product with the thickness of 2 mm prepared by the method used in the example 1 can reach 7MPa to 15MPa approximately (related to the dosage ratio of coffee grounds to gel), and is 3-5 times of that of a common plastic silicone tube (the common pressure-resistant silicone tube can resist Gao Jiangya, and can reach 2.5MPa to 4.0MPa approximately). Meanwhile, the smaller the proportion of the coffee grounds in the mixed solution is, the better the transparency of the coffee grounds is, and the proportion can be adjusted according to the requirement to obtain a product which has enough strength and can meet the requirement on transparency.
The product of the material is soaked in high-temperature boiling water or hot water for about 20-60min, and the product is automatically decomposed to form water solution and coffee grounds, and can be further used as fertilizer to realize organic cycle.
Example 2
Gel pretreatment: selecting proper amount of bone glue, cleaning and soaking for 1h.
Boiling the gel: the pretreated gel was mixed at a ratio of 1:5, mixing the mixture with water, putting the mixture into a decocting utensil, and decocting the mixture with slow fire in a water-proof way. The specific decocting method comprises the steps of firstly carrying out slow fire (about 50-70 ℃), then carrying out medium fire (about 100 ℃), and then carrying out slow fire (about 50-70 ℃), wherein the time is 20, 50 and 20 minutes in sequence (the time ratio is 2. Decocting the gel and water until the gel is completely dissolved (preferably in syrup or paste), and taking out for use.
Mixing coffee grounds: and (3) mixing the coffee grounds with the gel in a mass ratio of 3:1-5: adding the mixture into the decocted mixed solution according to the proportion of 1, and continuously stirring to ensure that the mixture is fully fused.
Brushing glue and shaping: selecting a proper mold according to the shape of the final product, introducing the mixed medium into the mold, waiting for 15min for natural solidification, and demolding (or in a semi-dry state, if necessary) as shown in FIG. 2.
Finishing: and taking out the product, and correspondingly polishing and repairing the finished product to finally form the designed shape.
Fig. 4 shows a physical diagram of the product obtained in this example, and 2 different molds are selected to obtain 2 different shapes. The left product in fig. 4 uses 5:1, the right product adopts a mass ratio of 3:1, both of which are opaque and dark, wherein the left side contains a greater amount of coffee grounds and is also darker in color, almost pure black, while the right side contains a relatively smaller amount of coffee grounds and is closer to dark brown in color (still darker in color compared to the product of example 1, see fig. 3).
Example 3
Gel pretreatment: selecting proper amount of bone glue, cleaning and soaking for 1.5h.
Boiling the gel: the pretreated gel was mixed at a ratio of 1:5, mixing the mixture with water, putting the mixture into a decocting utensil, and decocting the mixture with slow fire in a water-proof way. The specific decocting method comprises the steps of firstly decocting with small fire (about 50-70 ℃), then decocting with medium fire (about 100 ℃), and then decocting with small fire (about 50-70 ℃), wherein the time is 30, 75 and 30 minutes in sequence (the time ratio is 2. Decocting the gel and water until the gel is completely dissolved (preferably in syrup or paste), and taking out for use.
Mixing coffee grounds: mixing coffee grounds with gel according to the mass ratio of 1:8, adding the mixture into the decocted mixed solution, adding paper fiber accounting for 3 percent of the mass of the coffee grounds and about 2 to 3 drops of indigo, and continuously stirring to ensure that the mixture is fully fused.
Brushing glue and shaping: selecting a proper mold according to the shape of the final product, introducing the mixed medium into the mold, waiting for 45min for natural solidification, and demolding (or in a semi-dry state, if necessary) as shown in FIG. 2.
Finishing: and taking out the product, and correspondingly polishing and repairing the finished product to finally form the designed shape.
Due to the addition of indigo, the final product appears dark blue; due to the addition of the paper fibers, the final product has certain toughness.
Soaking the product in boiling water for about 20-60min, and allowing the product to automatically decompose to form blue water (containing indigo blue) and coffee grounds.
3-10, there are shown examples of different applications of the material of the present application, which can be used for decorative surface coatings, paintings, stereoscopic works, and containers and decorations of various shapes; FIGS. 5 and 6 show the gel material when it is applied by brushing or extrusion, showing that it has certain fluidity and adhesiveness, and can be used as a coating decoration; also shown in fig. 7 is the case after the addition of plant dyes of different colors, which are able to stain well the sites with fibres (coffee grounds and other added biodegradable materials); fig. 8 shows a state after demolding with coffee grounds gel, in which a small amount of paper fiber material is added in the preparation process of the coffee grounds gel to generate the texture of fiber and to act as reinforcing ribs, and as can be seen from fig. 8, the coffee grounds gel is convenient to demold after solidification, is not sticky, can be completely removed, has certain strength and toughness, and cannot be deformed in the demolding process; as shown in FIG. 9, the material of the present invention can also be used for making large decorations, such as large decorations arranged on urban squares, market doorways, etc., and has good market application prospects.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The coffee grounds gel material is characterized by comprising coffee grounds, gel and water, wherein the mass ratio of the coffee grounds to the gel is 1:15-5:1; the mass ratio of the gel to the water is 1:4-1:5.
2. the coffee grounds gel material of claim 1, further comprising a biodegradable material other than coffee grounds.
3. The coffee grounds gel material of claim 1, further comprising a plant colorant.
4. The coffee grounds gel material as claimed in claim 1, wherein the gel is bone glue.
5. A method of preparing a coffee grounds gel material as claimed in any one of claims 1 to 4 comprising the steps of:
s1: mixing the gel with water, and heating to completely dissolve;
s2: adding coffee grounds into the mixed solution obtained in the step S1, and stirring to uniformly mix the coffee grounds and the mixed solution;
s3: and (3) naturally solidifying the mixed medium obtained in the step (S2) to obtain the coffee grounds gel material.
6. The method for preparing a coffee grounds gel material as claimed in claim 5, wherein the gel is soaked for 1-2h in step S1.
7. The method of claim 5, wherein the heating in step S1 is water-proof boiling.
8. The method of claim 7, wherein the water-resistant boiling comprises three stages, and the time ratio of the first stage to the second stage to the third stage is 2:5: the temperature of the first stage and the third stage is 50-70 ℃, and the temperature of the second stage is 100 ℃.
9. The method of claim 5, wherein the natural solidification time of step S3 is 15-90min.
10. Use of the coffee grounds gel material as claimed in any one of claims 1 to 4 in artware, decorative furnishings, toy articles and furniture parts.
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