山东三所新材料技术有限公司

       世界上几乎所有的纺织材料都是可以燃烧的，伪装网也不例外，即便通过阻燃技术处理也难以阻止纺织纤维在火焰中燃烧。 只是通过阻燃处理后会不同程度的降低伪装网材料的燃烧速度和离开火源后能够迅速停止燃烧自己熄灭，因此阻燃不是绝对的而是相对的。

　　Almost all textile materials in the world are combustible, and camouflage nets are no exception. Even with flame retardant technology, it is difficult to prevent textile fibers from burning in flames. However, after flame retardant treatment, the combustion rate of the camouflage net material will be reduced to varying degrees, and it can quickly stop burning and extinguish itself after leaving the fire source. Therefore, flame retardancy is not absolute but relative.

　　随着城市现代化的发展，人们对纺织品的阻燃性能意识日益提高，为了避免由于纺织品燃烧引起的火灾事故，避免不必要的损失，纺织品燃烧性能的测试近年来受到世界各国的重视。尤其用于军事用途的伪装网毋庸置疑把阻燃性能作为伪装网最基本的性能要求之一。

　　With the development of urban modernization, people's awareness of the flame retardant performance of textiles is increasing. In order to avoid fire accidents caused by textile combustion and unnecessary losses, the testing of textile combustion performance has received attention from countries around the world in recent years. There is no doubt that flame retardant performance is one of the most basic performance requirements for camouflage nets, especially those used for military purposes.

　　1 、伪装网纺织材料阻燃性能的评定：

　　1. Evaluation of flame retardant properties of camouflage net textile materials:

　　评定伪装网纺织材料的可燃性主要从两方面来考虑：

　　The evaluation of the flammability of camouflage net textile materials is mainly considered from two aspects:

　　一方面是易点燃性，即着火点的高低来判定伪装网纺织材料着火的难易；

　　On the one hand, it is the ease of ignition, which determines the difficulty of the camouflage net textile material catching fire based on the level of ignition point;

　　另一方面是伪装网纺织材料的燃烧性能即阻燃性。

　　On the other hand, the combustion performance of camouflage net textile materials, namely flame retardancy.

　　评定伪装网纺织材料的燃烧性能存在两种评判标准：

　　There are two evaluation criteria for the combustion performance of camouflage net textile materials:

　　一种是从纺织材料的燃烧速率来进行评判。即经过阻燃整理的纺织材料按规定的方法与火焰接触一定的时间，然后移去火源，测定纺织材料继续有焰燃烧的时间和无焰燃烧的时间，以及纺织材料被损毁的程度。有焰燃烧的时间和无焰燃烧的时间越短，被损毁的程度越低，则表示纺织材料的阻燃性能越好；反之，则表示纺织材料的阻燃性能不佳。

　　One way is to evaluate based on the combustion rate of textile materials. The textile materials that have undergone flame retardant treatment are exposed to flames for a certain period of time according to the prescribed method, and then the flame source is removed to determine the duration of flame and flameless combustion of the textile materials, as well as the degree of damage to the textile materials. The shorter the time of flame combustion and flameless combustion, the lower the degree of damage, indicating better flame retardant performance of textile materials; On the contrary, it indicates poor flame retardant performance of textile materials.

　　另一种是通过氧指数，也称极氧指数法来进行评判。伪装网纺织材料燃烧都需要氧气，氧指数（LOI）是纤维燃烧所需氧气的表述，通过测定氧指数即可判定伪装网纺织材料的阻燃性能，氧指数越高则维持燃烧所需的氧气浓度越高，则表示越难燃烧。氧指数法具体是将被夹持纺织材料垂直放入透明燃烧筒中，筒内有向上的移动氧氮气流，点燃纺织材料端随即观察燃烧现象，并与规定的极限比较其持续燃烧时间或燃烧的距离，通过不同样浓度中一系列纺织材料的实验，可以测得最低氧浓度，氧指数法较适合用于工艺过程实验使用。该指数可用样品在氮、氧混合气体中保持烛状燃烧所需氧气的最小体积百分数来表示：LOI=氧气浓度／(氧气浓度+氮气浓度)×100％。氧指数低于20％属于易燃纤维，氧指数在20～26%之间属于可燃纤维，氧指数在26～34％之间属于难燃纤维，氧指数在35％以上属不燃纤维。

　　Another method is to evaluate through the oxygen index, also known as the polar oxygen index method. The combustion of camouflage net textile materials requires oxygen, and the oxygen index (LOI) is the expression of the oxygen required for fiber combustion. The flame retardant performance of camouflage net textile materials can be determined by measuring the oxygen index. The higher the oxygen index, the higher the oxygen concentration required to maintain combustion, indicating that combustion is more difficult. The oxygen index method specifically involves placing the clamped textile material vertically into a transparent combustion cylinder, with an upward movement of oxygen and nitrogen airflow inside the cylinder. The end of the textile material is ignited and the combustion phenomenon is observed immediately. The sustained combustion time or distance is compared with the specified limit. Through a series of textile material experiments at different concentrations, the lowest oxygen concentration can be measured. The oxygen index method is more suitable for use in process experiments. This index can be expressed as the minimum volume percentage of oxygen required for a sample to maintain candle shaped combustion in a mixture of nitrogen and oxygen: LOI=oxygen concentration/(oxygen concentration+nitrogen concentration) x 100%. Oxygen index below 20% belongs to flammable fibers, oxygen index between 20-26% belongs to flammable fibers, oxygen index between 26-34% belongs to flame retardant fibers, and oxygen index above 35% belongs to non combustible fibers.

　　2 、伪装网阻燃性能的测试方法：

　　2. Test method for flame retardant performance of camouflage nets:

　　燃烧测试方法多种多样，各种测试方法的测试结果之间难以相互比较，实验结果仅能在一定程度上说明纺织材料燃烧性能的优劣。

　　There are various combustion testing methods, and the test results of each method are difficult to compare with each other. The experimental results can only to some extent explain the advantages and disadvantages of the combustion performance of textile materials.

　　燃烧实验法主要用来测试伪装网纺织材料的燃烧　　广度（炭化面积和损毁长度）、续燃时间和阴燃时间。根据伪装网纺织材料与火焰的相对位置，可分为垂直法、倾斜法和水平法。

　　Breadth (carbonization area and damage length), reignition time, and smoldering time. According to the relative position between the camouflage net textile material and the flame, it can be divided into vertical method, inclined method, and horizontal method.

　　我国目前对于伪装网阻燃性能的测式主要使用GB／T5455～1997《纺织品燃烧性能试验垂直法》。其原理是将一定尺寸的伪装网纺织材料垂直置于规定的燃烧试验箱中，用规定的火源点燃12秒，移开火源后测定伪装网纺织材料的续燃时间和阴燃时间，阴燃停止后按规定的方法测出损毁长度。该方法可用于服装织物、装饰织物、帐篷织物等的阻燃性能。

　　At present, China mainly uses GB/T5455-1997 "Vertical method for testing the flame retardant performance of camouflage nets". The principle is to place a certain size of camouflage net textile material vertically in a specified combustion test chamber, ignite it with a specified fire source for 12 seconds, remove the fire source, and measure the sustained combustion time and smoldering time of the camouflage net textile material. After the smoldering stops, measure the length of damage according to the specified method. This method can be used for the flame retardant performance of clothing fabrics, decorative fabrics, tent fabrics, etc.

　　45°倾斜法适用于飞机内装饰用布。

　　The 45 ° tilt method is suitable for aircraft interior decoration fabrics.

　　水平法适用于地毯之类的铺垫织物和汽车内饰织物。

　　The horizontal method is applicable to bedding fabrics such as carpets and automotive interior fabrics.

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