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Silkworm cocoon drying method for improving mechanical properties and thermal stability of silk

A drying method and thermally stable technology, applied in the direction of heating to dry solid materials, drying solid materials, lighting and heating equipment, etc., can solve the problem that cocoon drying technology cannot be improved, drying technology is fixed, silk mechanical properties and thermal stability performance Can not be improved and other problems, to achieve the effect of promoting further development, shortening drying time, and increasing the temperature at the point of weight loss rate

Inactive Publication Date: 2019-01-04
ANHUI SANLI SILK GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the silk industry, cocoon drying is a very important process. The purpose of cocoon drying is to kill silkworm chrysalis and parasitic fly maggots, and at the same time remove the moisture contained in fresh cocoons so that they can be stored for a long time; in the process of cocoon drying , it is necessary not to damage the cocoon quality, but also to properly denature the sericin, which is beneficial to silk reeling and improves the silk grade; at present, the cocoon drying process can generally be divided into two stages: the first flushing and the second flushing, and the first flushing stage is the cocoon drying process In the preheating and constant-speed drying stages, the second flushing stage is the deceleration drying stage, that is, when the semi-dried cocoons enter the stove until they reach the suitable drying standard. And thermal stability can't be improved all the time, silkworm cocoon drying technology can't be improved, inhibit the further development and progress of the silk field, so continue to invent a cocoon drying method to improve silk mechanical properties and thermal stability

Method used

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  • Silkworm cocoon drying method for improving mechanical properties and thermal stability of silk

Examples

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Effect test

Embodiment 1

[0015] In the embodiment of the present invention, a cocoon drying method for improving the mechanical properties and thermal stability of silk, the specific method is as follows:

[0016] (1) Put the fresh silkworm cocoons into the electric field for electric field treatment, immerse them in the sodium alginate solution at a temperature of 49°C and soak for 18 minutes, drain the liquid, and drain until there is no water dripping, and put it into the condition at a temperature of 0.3°C Refrigerate at a constant temperature for 22 minutes, raise the temperature to 6.7°C at a heating rate of 0.3°C / min, continue to refrigerate at a constant temperature for 34 minutes, and dry in microwave for 10 minutes at a temperature of 73°C and a power of 66W to obtain pre-dried cocoons;

[0017] (2) Submerge the pre-dried cocoons in the treatment agent for 31 minutes, remove the agent, drain until no water drips, and perform nitrogen plasma treatment. Microwave drying treatment is performed a...

Embodiment 2

[0023] In the embodiment of the present invention, a cocoon drying method for improving the mechanical properties and thermal stability of silk, the specific method is as follows:

[0024] (1) Put the fresh silkworm cocoons in the electric field for electric field treatment, immerse them in the sodium alginate solution at a temperature of 50°C for 20 minutes, drain the liquid, and drain until there is no water drop, and put it in the condition of a temperature of 0.5°C Refrigerate at a constant temperature for 24 minutes, raise the temperature to 6.9°C at a heating rate of 0.35°C / min, continue to refrigerate at a constant temperature for 36 minutes, and dry in microwave for 11 minutes at a temperature of 74°C and a power of 68W to obtain pre-dried cocoons;

[0025] (2) Submerge the pre-dried cocoons in the treatment agent for 33 minutes, remove the agent, drain until no water drips, perform nitrogen plasma treatment, and microwave drying treatment at a temperature of 65°C and a...

Embodiment 3

[0031] In the embodiment of the present invention, a cocoon drying method for improving the mechanical properties and thermal stability of silk, the specific method is as follows:

[0032] (1) Put the fresh silkworm cocoons into the electric field for electric field treatment, immerse them in the sodium alginate solution at a temperature of 51°C for 22 minutes, drain the liquid, and drain until there is no water drop, and put it in the condition of 0.7°C Refrigerate at a constant temperature for 26 minutes, raise the temperature to 7.1°C at a heating rate of 0.4°C / min, continue to refrigerate at a constant temperature for 38 minutes, and dry in microwave for 12 minutes at a temperature of 75°C and a power of 70W to obtain pre-dried cocoons;

[0033] (2) Submerge the pre-dried cocoons in the treatment agent for 35 minutes, remove the agent, drain until no water drips down, perform nitrogen plasma treatment, and microwave dry treatment for 30 minutes at a temperature of 66°C and ...

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Abstract

The invention belongs to the technical field of silkworm cocoon drying, in particular to a silkworm cocoon drying method for improving the mechanical properties and thermal stability of silk. The methods specifically comprises the following steps that (1) fresh silkworm cocoons are arranged in an electric field for electric field treatment, immersed in a sodium alginate solution for insulation soaking, drained, fished out, drained until no drop drips and subjected to refrigerating treatment and microwave drying treatment, and pre-dried silkworm cocoons are obtained; and (2) the pre-dried silkworm cocoons are arranged in a treatment agent to be soaked, drained, fished out, drained until no drop drips and subjected to nitrogen plasma treatment and microwave drying treatment, and the dried silkworm cocoons are obtained, wherein the treatment agent is prepared from the following raw materials of fresh bamboo leaching, red sugar alcohol, aloe polysaccharide, puerarin polysaccharide, kapok polysaccharide and water. The surface of the silk is flat and smooth, the thermal stability and mechanical properties of the silk are greatly improved, the drying rate is high, the drying time is effectively shortened, the quality of the silk is greatly improved, and further development of the silk industry is effectively promoted.

Description

technical field [0001] The invention belongs to the technical field of silkworm cocoon drying, in particular to a silkworm cocoon drying method for improving the mechanical properties and thermal stability of silk. Background technique [0002] In the silk industry, cocoon drying is a very important process. The purpose of cocoon drying is to kill silkworm chrysalis and parasitic fly maggots, and at the same time remove the moisture contained in fresh cocoons so that they can be stored for a long time; in the process of cocoon drying , it is necessary not to damage the cocoon quality, but also to properly denature the sericin, which is beneficial to silk reeling and improves the silk grade; at present, the cocoon drying process can generally be divided into two stages: the first flushing and the second flushing, and the first flushing stage is the cocoon drying process In the preheating and constant-speed drying stages, the second flushing stage is the deceleration drying st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/347D01B7/00
CPCD01B7/00F26B3/347
Inventor 王绍志朱华成
Owner ANHUI SANLI SILK GRP
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