Purpose

PET fiber is widely used in many fields, such as clothing and decorative materials. However, the high flammability and dripping problem restrict its applications. It is vital for PET fiber to overcome these two main drawbacks for practical applications.

Design/methodology/approach

In this paper nacre-mimetic flame retardant coating of chitosan (CH) and Montmorillonite (MMT) was fabricated on PET fabrics through the layer-by-layer assembly method. The flame retardancy and anti-dripping performance of the treated PET fabric were investigated.

Findings

The results of limiting oxygen index (LOI) value and vertical burning test revealed the anti-dripping performance of PET fabrics which was greatly improved, while the flame retardancy has not been improved. The dripping phenomena was eliminated when the CH/MMT bilayers were over 5 BL. Thermo gravimetric analysis (TGA) results revealed that nacre-mimetic coated CH/MMT bilayers on PET fabrics would promote the char formation both under nitrogen atmosphere and under air atmosphere indicating the obviously condensed phase flame retardant action. scanning electron microscopy (SEM) images of the char residues revealed that coated PET fabrics would promote the formation of char.

Research limitations/implications

However, the char was an unstable char which would further combust to change the thermal degradation and combustion process of PET fabric. Though PET fabric coated by this CH/MMT nacre-mimetic system had no flame retardancy, the anti-dripping performance was greatly improved. This research would provide experimental basis for improving the anti-dripping performance for thermoplastic materials.

Originality/value

This research is the original research for the flame retardant treatment by fabrication nacre-mimetic CH/MMT coating on PET fabric, which has not been reported previously. This research would provide experimental basis for improving the anti-dripping performance for thermoplastic polymer fabrics.

中文翻译：

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仿珍珠棉的CH / MMT制造涂层，用于改善PET织物的抗滴落性能

目的

PET纤维广泛用于许多领域，例如服装和装饰材料。然而，高易燃性和滴落问题限制了其应用。对于PET纤维来说，克服实际应用中的这两个主要缺点至关重要。

设计/方法/方法

本文通过逐层组装的方法，在PET织物上制备了壳聚糖（CH）和蒙脱土（MMT）的仿珍珠质阻燃涂料。研究了经处理的PET织物的阻燃性和抗滴落性能。

发现

极限氧指数（LOI）值和垂直燃烧试验的结果表明，PET织物的抗滴落性能得到了很大的改善，而阻燃性没有得到改善。当CH / MMT双层超过5 BL时，消除了滴落现象。热重分析（TGA）结果表明，在氮气氛和空气气氛下，仿珍珠棉涂层的CH / MMT双层膜在PET织物上均会促进炭的形成，表明其具有明显的凝聚相阻燃作用。炭残留物的扫描电子显微镜（SEM）图像显示，涂覆的PET织物会促进炭的形成。

研究局限/意义

然而，炭是不稳定的炭，会进一步燃烧以改变PET织物的热降解和燃烧过程。尽管用这种CH / MMT珍珠母模拟体系涂布的PET织物没有阻燃性，但其抗滴落性能却大大提高了。该研究为提高热塑性材料的抗滴落性能提供了实验依据。

创意/价值

这项研究是通过在PET织物上制造仿珍珠棉CH / MMT涂层进行阻燃处理的原始研究，目前尚未见报道。该研究将为改善热塑性聚合物织物的抗滴落性能提供实验依据。