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Preparation method of nano-reinforced functional flat silk composite material

A composite material and nano-enhanced technology, applied in animal feed, additional food elements, applications, etc., can solve the problems of single shape and small cocoon size, and achieve the effects of compact structure, environmental protection in the preparation process, and improved stability

Pending Publication Date: 2022-03-04
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the small size and single shape of silkworm cocoons make it difficult to directly use them to develop large-area silk-based composites

Method used

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  • Preparation method of nano-reinforced functional flat silk composite material
  • Preparation method of nano-reinforced functional flat silk composite material

Examples

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preparation example Construction

[0026] The invention provides a preparation method of a nano-reinforced functional flat silk composite material, comprising the following steps:

[0027] Add functional nanomaterials to silkworm feed, and use this silkworm feed to feed silkworms to the upper cluster;

[0028] The clustered silkworms are placed on a two-dimensional flat plate for spinning to obtain a composite material.

[0029] Among them, the silkworms can be normally fed to the fifth instar silkworms, and feed them with silkworm feed added with functional nanomaterials from the second day of the fifth instar until the upper cluster. Of course, the silkworm feed can be either mulberry leaves or feed, but both require Sprinkle the functional nanometer material evenly on it for silkworm feed. Silkworms also need to defecate and urinate before they are placed on a two-dimensional plane to spin silk. During the spinning process, they are generally checked every 3 hours to adjust the density and uniformity of sil...

Embodiment 1

[0036] The preparation method of the nano-reinforced functional flat silk composite material provided in this embodiment comprises the following steps:

[0037] (1) Normal rearing of the silkworm strain Xiafang×Qiubai to the fifth instar, the feeding conditions are room temperature 25°C, humidity 75%-80%, feeding fresh mulberry leaves, light cycle (light / dark): 12h / 12h, every 8 Add fresh mulberry leaves every hour;

[0038] (2) Blend nano-silver and silk fibroin solution in a ratio of 1:100, obtain modified nano-silver suspension after ultrasonic treatment for 30min, wherein in the solution of silk fibroin, the mass fraction of silk fibroin is 2% ;

[0039] (3) Spray the modified nano-silver suspension evenly on the fresh mulberry leaves for the second day of the fifth instar silkworm, where every 100g of mulberry leaves is sprayed with about 10mL of the suspension, and the water on the surface of the mulberry leaves is naturally air-dried before feeding With silkworms, feed...

Embodiment 2

[0043] The preparation method of the nano-reinforced functional flat silk composite material provided in this embodiment comprises the following steps:

[0044] (1) Normal rearing of the silkworm strain Xiafang×Qiubai to the fifth instar, the feeding conditions are room temperature 25°C, humidity 75%-80%, feeding fresh mulberry leaves, light cycle (light / dark): 12h / 12h, every 8 Add fresh mulberry leaves every hour;

[0045] (2) Blend graphene and silk fibroin solution in a ratio of 1:100, obtain a modified graphene suspension after ultrasonic treatment for 30 min, wherein in the silk fibroin solution, the mass fraction of silk fibroin is 10% ;

[0046] (3) Spray the modified graphene suspension evenly on the fresh mulberry leaves for feeding on the second day of the fifth instar silkworm, wherein about 5mL of the suspension is sprayed per 100g of mulberry leaves, and the surface moisture of the mulberry leaves is naturally air-dried before feeding With silkworms, feed once e...

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Abstract

The invention discloses a preparation method of a nano-reinforced functional flat filament composite material. Comprising the following steps: adding a functional nano material into a silkworm feed, and feeding silkworms to an upper cluster by using the silkworm feed; and putting the cocooned silkworms on a two-dimensional plane plate for spinning to obtain the composite material. The preparation method of the nano reinforced functional flat silk composite material provided by the invention is simple to operate, the whole process is environment-friendly, pollution-free and extremely low in cost, composite materials with different functions, sizes and shapes can be prepared according to requirements, large-scale production is facilitated, and meanwhile, the produced composite material has a structure similar to that of silkworm cocoons and has a good application prospect. The composite material is excellent in mechanical property, has special functions, such as antibiosis, electric conduction, ultraviolet resistance and the like, endowed by a functional nano material, and is extremely wide in application range.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to a preparation method of a nano-reinforced functional flat silk composite material. Background technique [0002] The method of feeding silkworms is to use the silkworm organism itself as a natural material processing site, and use the silkworm itself to absorb foreign substances, and organically combine foreign substances and silk proteins to form composite silk with excellent performance or special functions. The method of adding food has the advantages of low cost, high efficiency, simple process, green and environmental protection, and is conducive to large-scale production. Nanomaterials have unique optical effects, small size effects, and surface interface effects. Compounding them into silk as additives can endow silk with excellent thermal and mechanical properties or other special functions. However, most of the current research focuses on obt...

Claims

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Application Information

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IPC IPC(8): A01K67/04A23K50/90A23K20/20A23K20/147
CPCA01K67/04A23K50/90A23K20/20A23K20/147
Inventor 代方银程岚贾睿刘祖兰邵家兴
Owner SOUTHWEST UNIVERSITY