阻燃剂在纺织品行业的应用
纺织品作为国计民生中不可缺少的组成部分,其按照用途分为服用纺织品、裴饰用纺织品和产业用纺织品三大类,它们在人们日常生活中占据着重要的地位。但是,纺织品由于其组成原料的原因比较容易燃烧,近年来,由纺织品保管不当或者在使用过程中着火引起的火灾多有报道,给消费者的人身及财产安全带来了较大的冲击。所以,纺织品需要进行不同程度的阻燃整理,使其不仅可以为消费者提供物质需要,还可以有效地提高安全性。随着纺织科技的进步和人们生活水平的不断提高,纺织品的阻燃整理研究也得到了进一步的发展,并取得了一定的研究成果。
纺织品阻燃纤维生产方法
与普通纤维不同,阻燃纤维具有良好阻燃性,可以延缓火势的蔓延。阻燃纤维可以分为两类,一类是纤维本身具有一定的阻燃性能,如聚间苯二甲酰间苯二胺纤维、聚酰胺一酰亚胺纤维等,现已广泛应用于各种耐高温和阻燃的工作环境;另一类是对常规纤维进行改性而获得。
由于常规纤维来源广、数量多、价格廉,所以它们是一般阻燃产品最常用的原料。按照阻燃剂与纤维大分子结合方式的不同,常规纤维阻燃改性的方法可大致分为如下几种:
共聚法:阻燃效果持久,但工艺复杂,成本较高。
共混法:也叫添加法,耐久性不如用共聚法生产的纤维。
皮芯复合纺丝法:纤维稳定性好,强度和均匀度都较高,但设备复杂昂贵,成本太高。
纺织品阻燃整理方法
织物的阻燃整理指的是阻燃剂通过物理(吸附、沉积、粘合)或化学(化学键)结合方式覆在织物上的过程。经过阻燃处理的纺织品不能被明火点燃,火焰蔓延速度降低,燃烧性能降低,移去火源后,纺织品不会燃烧,阴燃时间缩短不阴燃,并且燃烧过程释放的总热量降低,形成较厚的炭层。
Application of flame retardant in textile industry
As an indispensable part of the national economy and people's livelihood, textiles are divided into three categories according to their uses: clothing textiles, decorative textiles and industrial textiles. They occupy an important position in people's daily life. However, textiles are relatively easy to burn due to their constituent raw materials. In recent years, there have been many reports of fires caused by improper storage of textiles or fire during use, which has brought a greater impact on the personal and property safety of consumers. Therefore, textiles need different degrees of flame retardant finishing, so that it can not only provide consumers with material needs, but also effectively improve safety. With the advancement of textile technology and the continuous improvement of people's living standards, the research on flame retardant finishing of textiles has also been further developed, and certain research results have been achieved.
Production method of textile flame retardant fiber
Different from ordinary fibers, flame retardant fibers have good flame retardancy and can delay the spread of fire. Flame retardant fibers can be divided into two categories, one is that the fibers themselves have certain flame retardant properties, such as poly-m-phenylene isophthalamide fibers, polyamide-imide fibers, etc., which have been widely used in various High temperature resistant and flame retardant working environment; the other type is obtained by modifying conventional fibers.
Due to the wide source, large quantity and low price of conventional fibers, they are the most commonly used raw materials for general flame retardant products. According to the different ways of combining flame retardants and fiber macromolecules, conventional methods of fiber flame retardant modification can be roughly divided into the following categories:
Copolymerization method: The flame retardant effect is lasting, but the process is complicated and the cost is high.
Blending method: also called additive method, the durability is not as good as fibers produced by copolymerization method.
Skin-core composite spinning method: The fiber has good stability, high strength and uniformity, but the equipment is complex and expensive, and the cost is too high.
Textile flame retardant finishing method
The flame retardant finishing of fabrics refers to the process in which flame retardants are coated on fabrics by physical (adsorption, deposition, adhesion) or chemical (chemical bonds) bonding. The flame retardant treated textiles cannot be ignited by open flames, the flame spread speed is reduced, and the combustion performance is reduced. Thick carbon layer.