Mycelium nano leather manufacturing method

Abstract

The invention relates to the technical field of leather, in particular to a hypha nano leather manufacturing method which comprises the following steps: step 1, base cloth preparation: taking a high-strength fiber filament as a core, winding and wrapping yarns formed by elastic fibers on the outer layer, and interweaving to form base cloth for later use; step 2, compounding the base cloth with hyphae: modifying the fermented hyphae, and uniformly dispersing the modified hyphae in liquid to form turbid liquid; immersing the base cloth into the turbid liquid and then taking out the base cloth, taking out the base cloth from the turbid liquid, filtering the liquid through holes, and uniformly retaining and laying hyphae on the base cloth to form a mycelium fiber layer; step 3, forming: performing preliminary extrusion, crosslinking and hot rolling treatment on the compounded base cloth and hyphae, soaking in polyurethane, and drying to obtain a leather base; and 4, surface treatment. And the mycelium is compounded with the base cloth, so that the mechanical property of the mycelium leather can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of leather, and in particular to a method for preparing mycelium nano-leather. Background Art

[0002] Mycelium nanoleather is an innovative bio-based leather material that uses fungal mycelium as the basic raw material and is cultivated through biotechnology.

[0003] Compared with traditional plastic packaging, mycelium decomposes much faster and is environmentally friendly. Mycelium materials also have good thermal insulation, sound insulation, water retention and absorption, flame retardancy and shock resistance.

[0004] Although mycelium materials have good physical properties, they are less durable than traditional building materials and cannot withstand great pressure.

[0005] Therefore, this scheme provides a method for producing mycelium nano-leather, which, by compounding with other fibers, improves the mechanical properties of mycelium leather and increases its service life while maintaining the advantages of mycelium leather. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a method for preparing mycelium nano-leather.

[0007] The technical solution adopted by the present invention is as follows: A method for preparing mycelium nano-leather comprises the following steps:

[0008] Step 1: Base fabric preparation:

[0009] The high-strength fiber filament is used as the core, and the yarn formed by wrapping the elastic fiber on the outer layer is interwoven to form a base fabric for use;

[0010] Step 2: Composite base fabric and mycelium:

[0011] After the fermented mycelium is modified, it is evenly dispersed in the liquid to form a suspension;

[0012] The base fabric is immersed in the suspension and then taken out. As the base fabric is taken out of the suspension, the liquid is filtered through the basic holes, and the mycelium is evenly retained and laid on the base fabric to form a mycelium fiber layer;

[0013] Step 3: Molding:

[0014] After the composite, the base fabric and the mycelium are subjected to preliminary extrusion, cross-linking, hot rolling, and then impregnated with polyurethane and dried to obtain the leather base;

[0015] Step 4: Surface treatment:

[0016] The surface of the leather bass is polished and various patterns or designs are embossed on the leather surface.

[0017] Furthermore, antibacterial nanomaterials are mixed into the polyurethane.

[0018] Furthermore, in step 2, the mycelium is modified into a hydrophobic modification.

[0019] Furthermore, the high-strength fiber filaments are degradable fiber filaments.

[0020] Furthermore, the elastic fiber is a degradable natural elastic fiber.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows:

[0022] 1. The mechanical properties of mycelium leather can be further improved by combining mycelium with base fabric;

[0023] 2. The setting of the base fabric can not only increase the overall performance of the leather, but also assist in the formation of the mycelium fiber layer;

[0024] 3. The addition of antibacterial nanomaterials makes the leather have long-lasting antibacterial function;

[0025] 4. The use of elastic fiber provides leather with a certain elastic feel and improves the quality of leather. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] A method for preparing mycelium nano-leather comprises the following steps:

[0028] Step 1: Base fabric preparation:

[0029] The high-strength fiber filament is used as the core, and the yarn formed by wrapping the elastic fiber on the outer layer is interwoven to form a base fabric for use;

[0030] The high-strength fiber filaments are degradable fiber filaments;

[0031] The elastic fiber is a degradable natural elastic fiber;

[0032] Step 2: Composite base fabric and mycelium:

[0033] The fermented mycelium is subjected to hydrophobic modification by adding silane coupling agents, fluorides, etc. to react with the functional groups on the surface of the mycelium;

[0034] After modification, the mycelium is evenly dispersed in the liquid using a dispersion device to form a suspension;

[0035] The base fabric is immersed in the suspension and then taken out. As the base fabric is taken out of the suspension, the liquid is filtered through the basic holes, and the mycelium is evenly retained and laid on the base fabric to form a mycelium fiber layer;

[0036] Step 3: Molding:

[0037] After the composite, the base fabric and the mycelium are subjected to preliminary extrusion, cross-linking, hot rolling, and then impregnated with polyurethane and dried to obtain the leather base;

[0038] The polyurethane is mixed with antibacterial nanomaterials, which are new nanomaterials that can inhibit or kill bacteria and have the characteristics of small particle size, large specific surface area, high surface energy, etc. These characteristics enable the antibacterial nanomaterials to exhibit excellent antibacterial properties and stability in leather processing;

[0039] Step 4: Surface treatment:

[0040] The surface of the leather bass is polished to make it smoother and glossier, and various patterns or designs are embossed on the leather surface to increase the decorativeness and aesthetics of the leather.

[0041] The antibacterial nano material is one or more of nano silver, nano zinc oxide and nano titanium dioxide.

[0042] Wherein, the high-strength fiber filaments are one or more of chitosan filaments, lyocell filaments, and regenerated cellulose filaments;

[0043] Chitosan filaments have a highly ordered hierarchical structure, and their tensile strength and Young's modulus are 878 ± 123 MPa and 44.7 ± 12.3 GPa, respectively;

[0044] Lyocell filament combines the excellent quality of natural fiber and the high strength of chemical fiber. Its dry and wet strength is 1.5-4 times that of cuprammonium filament and viscose filament.

[0045] As the most abundant sustainable polymer, regenerated cellulose filament has the advantages of low cost, wide availability and biodegradability.

[0046] Wherein, the elastic fiber is one or more of wool, silk, and plant fiber;

[0047] Wool is the most elastic natural fiber, with good wrinkle resistance and resilience. After being subjected to external force, wool can quickly return to its original shape, thus improving the hand feel.

[0048] As an animal protein fiber, silk also has a certain elasticity. Silk fibers are slender and soft, providing a comfortable wearing experience and maintaining their shape when slightly stretched;

[0049] Although most plant fibers are not as elastic as animal fibers, some specific plant fibers, such as flax and hemp, can also show a certain degree of elasticity after special treatment;

[0050] The plant fibers include flax, jute, ramie, sisal, abaca and coconut fibers;

[0051] Flax fibers have great strength and elasticity;

[0052] Jute fiber has good moisture absorption and air permeability, and also has a certain elasticity;

[0053] Apocynum fiber has a unique luster and feel, as well as good elasticity and durability;

[0054] Sisal fiber has high strength and abrasion resistance, and also has a certain elasticity;

[0055] Abaca fiber has good corrosion resistance and elasticity;

[0056] Coconut fiber is extracted from the outer shell of coconut fruit and has good elasticity and abrasion resistance.

[0057] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing mycelium nano-leather, characterized in that: The steps include: Step 1: Base fabric preparation: The high-strength fiber filament is used as the core, and the yarn formed by wrapping the elastic fiber on the outer layer is interwoven to form a base fabric for use; Step 2: Composite base fabric and mycelium: After the fermented mycelium is modified, it is evenly dispersed in the liquid to form a suspension; The base fabric is immersed in the suspension and then taken out. As the base fabric is taken out of the suspension, the liquid is filtered through the basic holes, and the mycelium is evenly retained and laid on the base fabric to form a mycelium fiber layer; Step 3: Molding: After the composite, the base fabric and the mycelium are subjected to preliminary extrusion, cross-linking, hot rolling, and then impregnated with polyurethane and dried to obtain the leather base; Step 4: Surface treatment: The leather bass surface is polished and embossed according to the design.

2. The method for preparing mycelium nano-leather according to claim 1, characterized in that: Antibacterial nano materials are mixed in the polyurethane.

3. The method for preparing mycelium nano-leather according to claim 2, characterized in that: The antibacterial nano material is one or more of nano silver, nano zinc oxide and nano titanium dioxide.

4. The method for preparing mycelium nano-leather according to claim 1, characterized in that: In step 2, the mycelium is modified into a hydrophobic modification.

5. The method for preparing mycelium nano-leather according to claim 1, characterized in that: The high-strength fiber filaments are degradable fiber filaments.

6. The method for preparing mycelium nano-leather according to claim 1, characterized in that: The elastic fiber is a degradable natural elastic fiber.

7. The method for preparing mycelium nano-leather according to claim 5, characterized in that: The high-strength fiber filaments are one or more of chitosan filaments, lyocell filaments, and regenerated cellulose filaments.

8. The method for preparing mycelium nano-leather according to claim 6, characterized in that: The elastic fiber is one or more of wool, silk and plant fiber.