阅读说明：本技术 一种羽绒服保暖性能检测验收方法 (Down jacket thermal insulation performance detection acceptance method ) 是由 吴昆明 张传贵 李伟 嵇文容 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种羽绒服保暖性能检测验收方法,步骤包括：准备测试用的模型,模型为内部空心的人体形状,且在模型内装满水,水温的初始值为正常人体体温；将待检测羽绒服穿戴在模型外,再将模型至于低温环境中,实时获取模型内水的温度值,并在温度值低于初始值时对水进行加热,控制水温维持在初始值；记录固定时间内加热所产生的总热量值,根据总热量值确定羽绒服的保暖性能。本方法能具体确定羽绒服的保暖等级,相比较传统检测方式,检测结果的呈现更加直观明了；本方法能模拟人体穿戴羽绒服时的真实环境,还能避免人体体表温度、新陈代谢过程对检测的影响,准确性、可靠性得到大幅提升；另外,本方法还具有操作简便、检测成本低等优点。(The invention discloses a method for detecting and accepting the heat retention performance of a down jacket, which comprises the following steps: preparing a test model, wherein the model is in a hollow human body shape, water is filled in the model, and the initial value of the water temperature is the normal human body temperature; wearing the down jacket to be detected outside the model, placing the model in a low-temperature environment, acquiring a temperature value of water in the model in real time, heating the water when the temperature value is lower than an initial value, and controlling the water temperature to be maintained at the initial value; and recording the total heat value generated by heating within a fixed time, and determining the heat preservation performance of the down jacket according to the total heat value. The method can specifically determine the warmth retention grade of the down jacket, and compared with the traditional detection mode, the detection result is more visual and clear in presentation; the method can simulate the real environment of a human body when wearing the down jacket, can also avoid the influence of the body surface temperature and the metabolism process of the human body on the detection, and greatly improves the accuracy and the reliability; in addition, the method also has the advantages of simple and convenient operation, low detection cost and the like.)

1. A method for detecting and accepting the thermal insulation performance of down jackets is characterized by comprising the following steps: comprises the steps of

Preparing a test model, wherein the model is in a hollow human body shape, water is filled in the model, and the initial value of the water temperature is the normal human body temperature;

step two, testing, namely wearing the down jacket to be detected outside the model, placing the model in a low-temperature environment, acquiring the temperature value of water in the model in real time, heating the water when the temperature value is lower than the initial value, and stopping heating when the temperature value reaches the initial value again so as to control the water temperature to be maintained at the initial value;

and step three, recording the total heat value generated by heating within a fixed time, and determining the heat preservation performance of the down jacket according to the total heat value.

2. The method for detecting and accepting the thermal insulation performance of the down jacket according to claim 1, wherein the method comprises the following steps: the initial value of the water temperature is 36-37 ℃.

3. The method for detecting and accepting the thermal insulation performance of the down jacket according to claim 1, wherein the method comprises the following steps: in the test process, water is stirred at a constant speed, and the stirring speed is 60-80 r/min.

4. The method for detecting and accepting the thermal insulation performance of the down jacket according to claim 1, wherein the method comprises the following steps: in the testing process, the gap between the outer surface of the model and the inner surface of the down jacket is uniformly sprayed, and the spraying speed per unit area is 10-12 g/hm²。

5. The method for detecting and accepting the thermal insulation performance of the down jacket according to claim 1, wherein the method comprises the following steps: the temperature value of the low-temperature environment is-10-5 ℃.

6. The method for detecting and accepting the thermal insulation performance of the down jacket according to claim 1, wherein the method comprises the following steps: and in the third step, recording the total heat value generated by heating within 30 min-5 h, wherein the total heat value is the product of the total heating time and the heat value generated by heating within unit time.

7. The method for detecting and accepting the thermal insulation performance of the down jacket according to claim 1, wherein the method comprises the following steps: in the third step, the total heat value is divided into a plurality of heat levels, each heat level corresponds to a heat preservation level of the heat preservation performance, and the heat preservation level of the down jacket is determined according to the actually recorded heat level to which the total heat value belongs.

Technical Field

The invention relates to the technical field of clothing detection, in particular to a method for detecting and accepting the heat retention performance of a down jacket.

Background

With the development of the clothing industry, down coats produced by various large clothing factories gradually show the trend of lightness, thinness and diversified styles, and are popular with many young consumers. However, the most basic thermal properties of down jackets are not considered enough, so that many down jackets cannot really keep warm. Therefore, the detection and acceptance of the warm-keeping performance of the down jacket during production are very necessary. The traditional detection mode of the thermal insulation performance of the down jacket is that the thermal insulation effect is directly evaluated subjectively by wearing, which is obviously inaccurate and cannot obtain a specific thermal insulation coefficient.

It is known that in a low temperature environment, if a person does not take effective warm-keeping measures, the body surface temperature is reduced, and at the moment, the body needs to consume a certain amount of energy to generate heat, so as to maintain the constant temperature of the body surface. Therefore, in the same low-temperature environment, after the down jacket is worn, the heat retention performance is related to the heat production of the body, namely the better the heat retention performance is, the less the heat production is, the poorer the heat retention performance is, and the more the heat production is. Therefore, the warm-keeping performance of the down jacket can be detected by using the rule.

Disclosure of Invention

The invention aims to provide a method for detecting and accepting the thermal insulation performance of a down jacket, which can accurately detect the thermal insulation performance of the down jacket.

The invention realizes the purpose through the following technical scheme:

a method for detecting and accepting the warm-keeping performance of a down jacket comprises the following steps

Preparing a test model, wherein the model is in a hollow human body shape, water is filled in the model, and the initial value of the water temperature is the normal human body temperature;

step two, testing, namely wearing the down jacket to be detected outside the model, placing the model in a low-temperature environment, acquiring the temperature value of water in the model in real time, heating the water when the temperature value is lower than the initial value, and stopping heating when the temperature value reaches the initial value again so as to control the water temperature to be maintained at the initial value;

and step three, recording the total heat value generated by heating within a fixed time, and determining the heat preservation performance of the down jacket according to the total heat value.

The further improvement is that the initial value of the water temperature is 36-37 ℃, and the body surface temperature of a normal person is simulated.

The further improvement is that in the test process, water is stirred at a constant speed, the stirring speed is 60-80 r/min, the uniformity of the water temperature in the model is ensured to the maximum extent, and the accuracy is improved.

The further improvement is that in the test process, the gap between the outer surface of the model and the inner surface of the down jacket is uniformly sprayed, and the spraying speed per unit area is 10-12 g/hm²The device is used for simulating the sweat amount discharged by the metabolism of a human body under the normal activity level. Because the exhaust sweat can possibly influence the warmth retention property of some down coats, the influence of metabolism on detection can be avoided in the mode, and the reliability of the detection result is improved.

The further improvement is that the temperature value of the low-temperature environment is-10-5 ℃, and the low-temperature environment is used for simulating the temperature environment in the down jacket wearing season.

The further improvement is that in the third step, the total heat value generated by heating within 30 min-5 h is recorded, and the total heat value is the product of the total heating time and the heat value generated by heating within unit time.

The further improvement is that in the third step, the total heat value is divided into a plurality of heat levels, each heat level corresponds to a heat preservation level of the heat preservation performance, and the heat preservation level of the down jacket is determined according to the actually recorded heat level to which the total heat value belongs.

The invention has the beneficial effects that: the method can specifically determine the warmth retention grade of the down jacket, and compared with the traditional detection mode, the detection result is more visual and clear in presentation; the method can simulate the real environment of a human body when wearing the down jacket, can also avoid the influence of the body surface temperature and the metabolism process of the human body on the detection, and greatly improves the accuracy and the reliability; in addition, the method also has the advantages of simple and convenient operation, low detection cost and the like.

Drawings

Fig. 1 is a schematic diagram of a model used in the checking and acceptance of the thermal insulation performance of the down jacket.

Detailed Description

The present application is described in further detail below with reference to examples, and it should be noted that the following detailed description is provided for further explanation of the present application and should not be construed as limiting the scope of the present application, and that certain insubstantial modifications and adaptations of the present application may be made by those skilled in the art based on the above-mentioned disclosure.