Hypha leather straw wallboard and manufacturing method thereof

Abstract

The invention discloses a hypha leather straw wallboard and a manufacturing method thereof, and relates to the technical field of bioengineering and building materials, the hypha leather straw wallboard mainly comprises a straw density board and pure hypha leather, and the pure hypha leather is manufactured by using the straw density board as a culture medium to culture hypha and then performing subsequent processing. The straw density board has the characteristics of sound absorption, heat insulation, energy conservation and environmental protection and is more difficult to burn compared with a traditional wood board, the pure mycelium leather has the characteristics of water resistance, corrosion resistance, attractiveness and the like, and compared with the prior art, the straw density board makes up for the deficiency of water resistance of the traditional straw density board, relieves the problem of shortage of wood resources, and has a good market prospect. The straw waste treatment problem is solved, and the ethical and environmental problems caused by animal leather in life are solved by replacing animal leather with pure hypha leather.

Description

Technical Field

[0001] This invention relates to the fields of bioengineering and building materials technology, specifically to a mycelium leather straw wall panel and its manufacturing method. Background Technology

[0003] my country is a major agricultural country with abundant crop straw resources, totaling approximately 700 million tons annually. For a long time, straw has been a primary source of fuel for rural residents, livestock feed, and organic fertilizer. In recent years, with the migration of rural labor, adjustments to energy consumption patterns, and the application of various alternative raw materials, regional, seasonal, and structural straw surpluses have emerged. How to dispose of this large amount of surplus straw has become a new problem. Therefore, realizing the industrial utilization of straw is key to its comprehensive utilization. Furthermore, since using straw to produce building materials does not generate free formaldehyde and is environmentally friendly, it offers broad prospects for the development of my country's building materials industry. Therefore, using straw as a building material raw material is one of the effective methods for the comprehensive utilization of straw.

[0004] In recent years, China's leather industry has achieved vigorous development and has become the world's largest leather goods manufacturer. However, the traditional leather production process faces many serious problems. A large amount of animal fur is used in leather production, which means a large amount of carbon emissions, water and land consumption, heavy metal pollution, harm to human health, and ethical issues in animal leather production that urgently need to be addressed. Therefore, it is crucial to adopt a sustainable, non-animal-derived leather alternative. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a mycelium leather straw wall panel, which overcomes the problem of ordinary straw wall panels being non-waterproof. By using mycelium leather, the reliance on natural leather can be reduced, alleviating pressure on animal resources and achieving the goals of resource conservation, cost reduction, environmental protection, and the rational utilization of straw.

[0006] To achieve the objective, the technical solution adopted by the present invention is as follows:

[0007] (1) Material preparation

[0008] Straw density board: Choose straw density board without added chemical adhesives.

[0009] Strain: Select strains that grow quickly and have a strong ability to decompose cellulose, including but not limited to any one of the following: oyster mushroom, reishi mushroom, shiitake mushroom, straw mushroom, button mushroom, enoki mushroom, king oyster mushroom, wood ear mushroom, silver ear mushroom, and schizophyllum commune.

[0010] (2) Straw density board pretreatment

[0011] High-temperature and high-pressure sterilization: The straw density board is steamed at 80-100℃ for 2-4 hours.

[0012] Moistening treatment: After sterilization, soak the straw density board in sterile water until its moisture content reaches 60% to 70%.

[0013] (3) Inoculation with bacterial strains

[0014] The liquid inoculum is evenly sprayed onto the surface of the straw density board. This process requires aseptic operation. The inoculation amount is about 100 to 200 ml of liquid inoculum per kilogram of straw density board.

[0015] (4) Mycelial culture

[0016] The temperature should be controlled at 25-30℃ and the humidity at 80%-90%. A humidifier or a breathable and moisturizing film can be used. The mycelium should be kept out of the light during cultivation, as dark environments promote mycelial growth.

[0017] (5) Termination of growth and drying

[0018] Dry at 60-70℃ for 6-12 hours to kill the mycelium and fix the structure. Then place in a well-ventilated, shaded place to air dry naturally, avoiding contamination by other microorganisms.

[0019] The straw density board is lightly pressed with a pressure of 5-10 kPa to enhance its density, while retaining its natural texture.

[0020] (6) Post-processing

[0021] Polishing: Use sandpaper to polish the surface to make it feel closer to leather;

[0022] Coating: Apply natural beeswax, linseed oil, or plant-based polyurethane to improve water resistance and abrasion resistance;

[0023] Dyeing: using plant dyes or mineral pigments for dyeing;

[0024] Further specifying, the straw density board must have evenly spaced holes with a diameter of 3-5 mm, a hole depth of 1 / 2 to 2 / 3 of the thickness of the straw density board, and a hole spacing of 3-5 cm, arranged in a honeycomb pattern.

[0025] Further specifying, the liquid culture medium consists of a culture medium, a culture medium, and water. The culture medium provides nutrients and contains carbon sources, nitrogen sources, inorganic salts, and trace elements. The culture medium consists of fungal spores or mycelia extracted from any one of the following fungi: oyster mushroom, reishi mushroom, shiitake mushroom, straw mushroom, button mushroom, enoki mushroom, king oyster mushroom, wood ear mushroom, silver ear mushroom, and schizophyllum commune. The water serves as a solvent to ensure the dissolution of nutrients and the growth of mycelia.

[0026] Further specified, the initial growth culture time of the mycelium is 3 to 7 days, the surface is covered with white mycelium, the complete colonization time is 10 to 15 days, and the mycelium penetrates into the interior of the straw board to form a dense network.

[0027] Furthermore, the flexibility of pure mycelium leather can be adjusted by controlling the growth time of the mycelium.

[0028] Compared with existing technologies, the wall panel provided by this invention uses straw density board, which has many advantages such as good heat insulation, high density, heat preservation, sound insulation, environmental protection, and low cost. On this basis, pure mycelium leather is grown as the surface layer. Compared with the raw materials such as cow, sheep, and pig hides used in traditional leather making, pure mycelium leather has a shorter production cycle, lower cost, is biodegradable, has less environmental pollution, and has advantages such as beautiful appearance, good sound insulation, good waterproofing, strong flame retardancy, environmental protection, and resource conservation. Compared with traditional wall panels, mycelium leather straw board is superior in terms of heat insulation, sound insulation, and waterproofing. It is also green, healthy, environmentally friendly, low-cost, and has a short production cycle. Moreover, it can realize the rational utilization of a large amount of straw, which has far-reaching significance and energy-saving and environmental protection value. Attached Figure Description

[0029] Figure 1 : Cross-sectional view of mycelium-leather-straw wall panel;

[0030] Figure 2 Mycelium, leather, and straw wall panels;

[0031] Figure 3 : Straw density board after drilling holes;

[0032] Figure 4 A flowchart illustrating the process of making mycelium leather straw wall panels.

[0033] In the image: 1-Straw density board; 2-Pure mycelium leather; 3-Pore Detailed Implementation

[0034] like Figures 1 to 3 As shown, a mycelium leather straw wall panel includes a straw density board 1, pure mycelium leather 2, and holes 3 drilled in the straw density board.

[0035] Reference Figure 4 This application provides a method for manufacturing mycelium leather straw wall panels, comprising the following steps:

[0036] Step 1, Material Preparation: Select straw density board 1 without added chemical adhesives; select a fungal strain that grows quickly and has a strong ability to decompose cellulose, including but not limited to any one of oyster mushroom, Ganoderma lucidum, shiitake mushroom, straw mushroom, button mushroom, enoki mushroom, king oyster mushroom, wood ear fungus, silver ear fungus, and Schizophyllum commune.

[0037] Step 2: Pretreatment of straw density board 1: Fumigate straw density board 1 with steam at 80-100℃ for 2-4 hours; after sterilization, soak straw density board 1 in sterile water to make its moisture content reach 60%-70%;

[0038] Step 3: Inoculate with microbial inoculum: Spray the liquid microbial inoculum evenly onto the surface of the straw density board 1. This process requires aseptic operation. Use 100-200 ml of liquid microbial inoculum per kilogram of straw density board 1.

[0039] Step 4, mycelial culture: The temperature should be controlled at 25-30℃ and the humidity should be maintained at 80%-90%. A humidifier or a breathable and moisturizing film can be used. The mycelium should be kept out of light during the culture process.

[0040] Step 5, Terminate growth and dry: Dry at 60-70℃ for 6-12 hours to kill mycelium and fix the structure. Place in a ventilated and shaded place to dry naturally, avoiding contamination by other microorganisms. Use 5-10 kPa pressure to lightly press the straw density board 1 to enhance the density, but retain the natural texture.

[0041] Step Six, Post-processing: Sand the surface to make it feel closer to leather, apply natural beeswax, linseed oil or plant-based polyurethane to improve water resistance and abrasion resistance, and dye with plant dyes or mineral pigments.

[0042] In step one, the straw density board 1 needs to have evenly spaced drilled holes 3, with a hole diameter of 3-5 mm, a hole depth of 1 / 2 to 2 / 3 of the thickness of the straw density board, and a hole spacing of 3-5 cm, arranged in a honeycomb pattern.

[0043] The liquid culture medium described in step three consists of a culture medium, a fungal strain, and water. The culture medium provides nutrients, including a carbon source (glucose), a nitrogen source (protein), inorganic salts (phosphate), and trace elements. The fungal strain is a fungal spore or mycelium extracted from any one of the following fungi: oyster mushroom, reishi mushroom, shiitake mushroom, straw mushroom, button mushroom, enoki mushroom, king oyster mushroom, wood ear mushroom, silver ear mushroom, and schizophyllum commune. The water serves as a solvent to ensure the dissolution of nutrients and the growth of mycelium.

[0044] The initial growth culture time of the mycelium in step four is 3 to 7 days, and the surface is covered with white mycelium. The complete colonization time is 10 to 15 days. The mycelium penetrates into the straw board and forms a dense network. The flexibility of the pure mycelium leather can be adjusted by controlling the growth time of the mycelium.

[0045] This application provides the following embodiments as specific implementation processes for producing a mycelium leather straw wall panel, including the following steps:

[0046] (1) Material preparation

[0047] Straw density board 1: Select straw density board 1 without added chemical adhesives. Straw contains rich cellulose, and mycelium can decompose these organic substances during the growth process. No chemical adhesives are added to prevent affecting mycelial growth.

[0048] Strain: Select oyster mushrooms that grow quickly and have a strong ability to decompose cellulose;

[0049] (2) Pretreatment of straw density board 1

[0050] High temperature and high pressure sterilization: The straw density board 1 is steamed at 100℃ for 4 hours to completely kill the bacteria;

[0051] Moistening treatment: After sterilization, soak the straw density board 1 in sterile water to make its moisture content reach 60% to 70%;

[0052] (3) Inoculation with bacterial strains

[0053] The liquid inoculum is evenly sprayed onto the surface of the straw density board 1. This process requires aseptic operation. The inoculation amount is about 180 ml of liquid inoculum per kilogram of straw density board 1.

[0054] (4) Mycelial culture

[0055] The temperature is controlled at 28℃, the humidity is maintained at 80% to 90%, and a microporous plastic film is used for covering. During the cultivation of mycelium, it is necessary to avoid light, as the dark environment promotes mycelial growth.

[0056] (5) Termination of growth and drying

[0057] Dry at 60-70℃ for 10 hours to kill the mycelium and fix the structure, then place in a well-ventilated, shaded place to air dry naturally (avoid contamination by other microorganisms);

[0058] The straw density board 1 is lightly pressed with 8 kPa pressure to enhance its density, but retains its natural texture;

[0059] (6) Post-processing

[0060] Polishing: Use sandpaper to polish the surface to make it feel closer to leather;

[0061] Coating: Applying natural beeswax enhances water resistance and abrasion resistance;

[0062] Dyeing: Dyeing using plant-based dyes;

[0063] In this embodiment, the straw density board 1 has a size of 600*1200*50 mm and needs to have evenly arranged drilled holes 3 with a diameter of 5 mm, a depth of 25 mm, and a spacing of 40 mm, arranged in a honeycomb pattern. The dense straw density board 1 may hinder oxygen circulation, and the drilled holes 3 can increase the porosity, promote mycelial respiration, and provide more attachment points for mycelia, accelerating their penetration into the interior. The unpenetrated holes 3 can improve air permeability while maintaining the overall strength of the straw density board 1.

[0064] In this embodiment, the drilling tool used in the drilling process of the straw density board 1 should be an electric drill or laser to avoid high temperature carbonization of the edges, and then the debris in the hole should be rinsed with sterile water to prevent blockage.

[0065] In this embodiment, the initial growth culture time of the mycelium is 5 days, the surface is covered with white mycelium, and the complete colonization time is 12 days. The mycelium penetrates deep into the straw board to form a dense network.

[0066] In this embodiment, the plant dyes include madder or indigo.

[0067] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this invention should be considered equivalent substitutions and are included within the protection scope of this invention. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for making a mycelium leather straw wallboard, characterized in that, It comprises the following steps: Step one, material preparation: select straw density board without adding chemical adhesives; select strains that grow fast and have strong cellulose decomposition ability; Step two, straw density board pretreatment: fumigate the straw density board with steam at 80-100°C for 2-4 hours; after sterilization, soak the straw density board in sterile water to make its moisture content reach 60%-70%; Step three, inoculation of strains: evenly spray liquid strains on the surface of the straw density board, which requires sterile operation, and the inoculation amount is 100-200 ml of liquid strains per kg of straw density board; Step four, mycelium cultivation: control the temperature at 25-30°C and keep the humidity at 80%-90%, which can be achieved by using a humidifier or covering a breathable and moisture-retaining film, and the cultivation of mycelium requires light avoidance; Step five, termination of growth and drying: dry at 60-70°C for 6-12 hours to kill the mycelium and fix the structure, and then naturally dry in a well-ventilated place, avoiding contamination by miscellaneous bacteria, and lightly press the straw density board under a pressure of 5-10 kpa to enhance the compactness while preserving the natural texture; Step six, post-processing: polish the surface with sandpaper to make the touch closer to leather, apply natural beeswax, linseed oil, or plant-based polyurethane to improve water resistance and wear resistance, and use plant dyes or mineral pigments for dyeing.

2. The method for producing a mycelium leather straw wall panel according to claim 1, characterized in that, The straw density board in step one needs to be uniformly arranged with holes, with a diameter of 3-5 mm, a hole depth of 1 / 2-2 / 3 of the thickness of the straw density board, and a hole spacing of 3-5 cm, arranged in a honeycomb pattern.

3. The method for making a mycelium leather straw wallboard according to claim 1, wherein the strains include but are not limited to any one of Pleurotus ostreatus, Ganoderma lucidum, Lentinula edodes, Volvariella volvacea, Clitocybe maxima, Flammulina velutipes, Pleurotus eryngii, Auricularia auricular, Tremella fuciformis, and Schizophyllum commune.

4. The method for producing a mycelium leather straw wall panel according to claim 1, characterized in that, The liquid strain in step three is composed of culture medium, strains, and water. The culture medium provides nutrition, including carbon source, nitrogen source, inorganic salt phosphate, and trace elements. The strains are fungal spores or mycelium extracted from any one of Pleurotus ostreatus, Ganoderma lucidum, Lentinula edodes, Volvariella volvacea, Clitocybe maxima, Flammulina velutipes, Pleurotus eryngii, Auricularia auricular, Tremella fuciformis, and Schizophyllum commune. The water serves as a solvent to ensure the dissolution of nutrients and the growth of mycelium.

5. The method of claim 1, wherein the method further comprises the step of:

5. applying a coating of a bacterial mycelium to the surface of the wallboard. 0 The primary growth culture time of mycelium in step four is 3-7 days, the surface is covered with white mycelium, the complete colonization time is 10-15 days, the mycelium penetrates into the interior of the straw density board, and forms a dense network.

6. The method of claim 4, wherein the method further comprises the step of: 5 drying the mold to form a dried mold; and 6 applying a coating of a mixture of a binder and a filler to the dried mold. 7 The flexibility of the pure mycelium leather can be adjusted by controlling the growth time.

7. A mycelium leather straw wallboard made by the method for making a mycelium leather straw wallboard according to any one of claims 1 to 6.

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