Treatment Method for Thermal Storage Goose Down and Its Application in Preparing Aviation Suit

This application claims priority benefit of Chinese patent Application No. 202410323587.3, filed on Mar. 21, 2024, and the entire contents of which are incorporated herein by reference.

The present disclosure herein belongs to the technical field of goose down treatment, in particular relates to a treatment method for thermal storage goose down and its disclosure in preparing aviation suit thereof.

The excellent thermal storage and warmth retention performance of down come from the animal hair in it. The animal hair has a curly structure and has clusters of down filaments containing thousands of hollow scales, whereby a large amount of air can be stored in the animal hair, and it has low thermal conductivity and good thermal insulation performance. The existing animal down used to make down mainly includes duck down and goose down. Compared with duck down, goose down is better in down cluster size and resilience, and thus has better warmth retention. The torso part of the existing aviation suit is a six-layer structure consisting of a comfort layer, an airtight layer, a main airtight layer, a restricting layer, an insulation layer and a protective layer, wherein the insulation layer mainly plays the role of heat insulation. Using goose down as the filling material for the insulation layer of the aviation suit can achieve a good thermal insulation effect.

However, although goose down has good thermal insulation performance, goose down itself does not have the function of thermal storage and can only provide thermal insulation conditions for the items wrapped therein, and the key factors affecting the thermal insulation of goose down are its down content and fluffiness. When goose down is used to fill the thermal insulation layer of aviation suits, the air pressure and the changes in the wearer's posture will cause the goose down to be repeatedly compressed and rubbed. In this process, the goose down will undergo changes such as breakage, clumping, and structural damage, and the fluffiness of the goose down will gradually decrease, resulting in a weakening of its thermal insulation effect. In order to improve the problem of impaired thermal insulation effect of goose down caused by the above situation, the existing process will process the goose down by coating or modification, and apply, graft or adsorb functional materials with thermal storage effect on the goose down. However, the above operations will increase the dead weight of the goose down, resulting in weakened resilience, reduced fluffiness, and increased probability of breakage and clumping. In view of the above problems, the present disclosure provides a treatment method for thermal storage goose down and its disclosure in preparing aviation suit.

The purpose of the present disclosure is to provide a treatment method for thermal storage goose down and its disclosure in preparing aviation suit to solve the above-mentioned problems.

The present disclosure achieves the above-mentioned purpose through the following technical solutions:

The present disclosure provides a treatment method for thermal storage goose down, comprising the following steps:

As a further optimization scheme of the present disclosure, in step S2, the raw material composition of the primary modified solution includes 5-10 parts of potassium thiocyanate, 5-10 parts of octadecyl isothiocyanate and 20-30 parts of water, by weight.

As a further optimization scheme of the present disclosure, in step S3, the raw material composition of the secondary modified solution includes 20-30 parts of nano titanium carbide powder, 10-15 parts of vinyl siloxane monomer, 3-8 parts of dispersant and 30-50 parts of water, by weight.

As a further optimization scheme of the present disclosure, in step S4, a constant temperature is maintained in the range of 30° C.-45° C. and continuous stirring is performed during the impregnation process, a forward/reverse reciprocating stirring method is adopted, and a rotation speed is 90-150 rpm.

As a further optimization scheme of the present disclosure, in step S4, the vacuum drying temperature is 35-55° C.

The present disclosure also provides the thermal storage goose down prepared by the above-mentioned treatment method.

The present disclosure also provides an aviation suit, using the above thermal storage goose down, comprising a trunk and limb suit, a helmet, gloves, a pressure regulating system, a ventilation and supply system, and a communication system, wherein the trunk and limb suit comprises a comfort layer, an airtight layer, a main airtight layer, a restricting layer, a thermal insulation layer, and a protective layer from the inside to the outside, wherein the thermal insulation layer comprises several layers of polyester film, a double-layer partition net is provided between adjacent polyester films, and the double-layer partition net is filled with thermal storage goose down.

As a further optimization scheme of the present disclosure, the thermal insulation layer is prepared by injecting thermal storage goose down into a spherical filling capsule, then filling a plurality of filling capsules between double-layer partition nets, and then stacking a plurality of filled double-layer partition nets one by one, and arranging a layer of polyester film between adjacent partition nets, and finally covering the two outermost partition nets with two pieces of polyester film and sealing the edges of the two pieces of polyester film together.

As a further optimization scheme of the present disclosure, a pouch of the filling capsule is made of breathable fabric or film, and the partition net is made of elastic net and the mesh size is smaller than the outer diameter of the filling capsule.

The beneficial effects of the present disclosure are:

The present disclosure performs two modification treatments on goose down. First, the goose down is impregnated with a primary modified solution containing potassium thiocyanate and octadecyl isothiocyanate. During the impregnation process, the goose down is repeatedly pulled by continuous stirring to fully twist and deform it, thereby comprehensively achieving the effect of improving the fracture strength and resilience of the goose down, thereby significantly improving the fluffiness and fluffiness maintenance ability of the goose down. Subsequently, the goose down is secondarily modified with a secondary modified solution containing nano titanium carbide powder and vinyl modified siloxane. Titanium carbide as a phase change material can give the goose down the ability of light-heat conversion, thereby significantly improving the thermal storage performance of the goose down. The vinyl modified siloxane can assist in strengthening the adhesion of the nano titanium carbide powder to the goose down, whereby the nano titanium carbide powder can be uniformly and stably attached to the goose down, further improving the performance stability of the thermal storage goose down. The two modification treatments enable the goose down to maintain good fluffiness while combining the phase change material to obtain excellent thermal storage performance, thereby comprehensively improving the thermal storage and thermal insulation performance of the goose down.

The present disclosure is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present disclosure and cannot be understood as limiting the scope of protection of the present disclosure. Skilled in the art can make some non-essential improvements and adjustments to the present disclosure based on the above disclosure content.

Unless otherwise specified, the methods used in the present disclosure are conventional methods known to those skilled in the art, and the reagents and other materials used are commercially available products unless otherwise specified.

The dispersant in the secondary modified solution is polyethylene glycol.

1. The influence of the components of the primary modified solution on the performance of goose down.

A treatment method for thermal storage goose down, comprising the following steps:

A treatment method for thermal storage goose down, comprising the following steps:

A treatment method for thermal storage goose down, comprising the following steps:

A treatment method for thermal storage goose down, comprising the following steps:

On the basis of example 3, the components and proportions of the primary modified solution were adjusted to prepare thermal storage goose down.

The components and proportions of the primary modified solution in examples 1-3, comparative example 1 and comparative example 2 are shown in the following table:

The performance of the thermal storage goose down prepared in examples 1-3, blank comparative example, comparative example 1 and comparative example 2 was tested using the following test method:

{circle around (1)} based on the down fluffiness detection method in GBT10288-2016 “Down and Feather Test Method”, the thermal storage goose down prepared in examples 1-3, blank comparative example, comparative example 1 and comparative example 2 was sampled in equal amounts, with a sampling amount of 40 g. The volume occupied by each sample under a specified pressure was detected in turn by a fluffiness instrument. After the first detection, each sample was subjected to the same water washing treatment in turn, and the sample was continuously rubbed during the water washing process. After the water washing treatment, the sample was dried, and then the sample was subjected to a secondary fluffiness test. The two fluffiness tests before and after the water washing treatment were repeated multiple times, and the average value of the realized data was taken as the test result;

{circle around (2)} the thermal storage goose down prepared in examples 1-3, blank comparative example, comparative example 1 and comparative example 2 were respectively used to prepare thermal insulation suit as samples. Under the simulated environmental conditions of the artificial climate chamber, a thermal manikin was used to test the thermal insulation performance of the goose down. The average thermal resistance after repeated tests was taken as the test result. The test conditions and the conditions of the artificial climate chamber were referred to the provisions of ASTM F2732. The specific preparation method of the thermal insulation suit was as follows: the thermal storage goose down was injected into a spherical filling capsule, and then several filling capsules were filled between the double-layer partition nets, and then the multiple filled double-layer partition nets were stacked one by one, and a layer of polyester film was arranged between adjacent partition nets. Finally, two outermost partition nets were covered with two polyester films and the edges of the two polyester films were sealed and bonded. The thermal insulation composite fabric was obtained through the above operation. According to the provisions of GB/T1335, the above thermal insulation composite fabric was used to prepare thermal insulation suit samples suitable for thermal manikin to wear, and the goose down filling amount in each thermal insulation suit sample was equal;

{circle around (3)} under the simulated environmental conditions of an artificial climate chamber, equal amounts of samples were obtained from the thermal storage goose down prepared in examples 1-3, blank control example, control example 1, and control example 2, and each sample was bagged separately in a uniform packaging bag to obtain the sample. The size of the packaging bag was 15×15 cm. The samples were illuminated for 10 minutes in sequence using a xenon arc lamp. The lighting conditions were kept consistent. The sample temperatures were detected at the moment the lighting treatment was completed and 1 minute after the completion of the treatment. After repeated tests, the average value was taken as the test result.

The test results are shown in the following table:

According to the data in the above table:

2. The influence of the components of the secondary modified solution on the performance of goose down.

A treatment method for thermal storage goose down, comprising the following steps:

A treatment method for thermal storage goose down, comprising the following steps:

A treatment method for thermal storage goose down, comprising the following steps:

On the basis of example 3, the components and proportions of the secondary modified solution were adjusted to prepare thermal storage goose down.

The components and proportions of the secondary modified solution in example 3, example 4, example 5 and comparative example 3 are shown in the following table:

The performance of the thermal storage goose down prepared in example 4, example 5, blank comparative example B and comparative example 3 was tested by using the detection methods {circle around (1)}, {circle around (2)} and {circle around (3)} in 1.2. The test results are shown in the following table:

According to the data in the above table:

The above-mentioned examples only express several embodiments of the present disclosure, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the patent scope of the present disclosure. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, which all fall within the protection scope of the present disclosure.