A kind of thermal insulation and sound-absorbing material based on waste feathers and preparation method thereof

Abstract

The invention provides a thermal insulation and sound-absorbing material based on waste feathers and a preparation method thereof. In the invention, waste feathers are mixed with ES fibers or PLA three-dimensional crimped hollow fibers in proportion, and then the materials are prepared by wet forming and hot air reinforcement; Compared with the prior art, the preparation method of the present invention is simple and easy to implement, the technological process is simple, the waste feathers as raw materials have a wide range of sources, the production cost is low, the environmental pollution can be solved, and the present invention has good social benefits; The thermal insulation and sound-absorbing material uses chemical and physical double reinforcement, good shape retention, good thermal insulation, sound absorption and sound insulation performance, the thermal insulation rate can reach more than 70%, the Cro value can reach more than 2.30, and the sound absorption coefficient of the material The low frequency stage can reach above 0.25, and the high frequency stage can reach above 0.50. In addition, the material of the invention also has good degradable performance after being discarded, and the degradation rate can reach more than 64% after being deeply buried in the soil for 6 months.

Description

technical field [0001] The invention belongs to the field of biomass material recycling and reuse, and in particular relates to a waste feather-based thermal insulation and sound-absorbing material and a preparation method thereof. Background technique [0002] my country is rich in poultry feather resources such as chickens, ducks, geese, etc., but only 10-20% of the high-quality feathers are used as thermal filling materials, and a small part is used to extract animal feed or fertilizer. Most of the poultry feathers are directly discarded. When fleece is used as a thermal filling material, a large amount of scraps will be discarded, which not only pollutes the environment, endangers human health, but also wastes resources. [0003] Feather, as a natural polymer material, has the characteristics of being renewable, easy to obtain and abundant in reserves. From the perspective of waste biomass resource reuse, extracting keratin from waste feathers to make protein feed instead...

AI Technical Summary

Problems solved by technology

[0002] my country is rich in poultry feather resources such as chickens, ducks, geese, etc., but only 10-20% of the high-quality feathers are used as thermal insulation filling materials, and a small part is used to extract animal feed or fertilizer. Most of the poultry feathers are directly discarded. When cashmere is used as a thermal insulation filling material, a large amount of leftovers will be discarded, which not only pollutes the environment, endangers human health, but also seriously wastes resources.

[0003] Feather, as a natural polymer material, has the characteristics of being renewable, easy to obtain and rich in reserves. From the perspective of recycling waste biomass resources, extracting keratin from waste feathers to make protein feed instead of conventional protein feed will slow down the lack of protein feed resources in my country. It has certain significance, but the keratin extraction process is complicated, the energy consumption is high, the cost is high, and there are secondary pollution problems, so the large-scale development and utilization of waste feathers as animal feed is of little value

[0004] Feather fibers are short, prone to static electricity, and poor spinnability. It is technically difficult to spin them into yarns for textile processing.

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