Do you know anything about flame retardants?

Introduction

Flame retardant, functional additives that give flammable polymers flammability, mainly designed for the flame retardant of polymer materials;There are many types of flame retardants, which can be divided into additive flame retardants and reactive flame retardants according to their use methods.

The additive flame retardant is added into the polymer by mechanical mixing method, so that the polymer has flame retardant. At present, the additive flame retardant mainly includes organic flame retardant and inorganic flame retardant, halogen flame retardant (organic chloride and organic bromide) and non-halogen flame retardant.Organic is a series of flame retardants represented by bromine, phosphorus and nitrogen, nitrogen and red phosphorus and compounds, inorganic is mainly antimony trioxide, magnesium hydroxide, aluminum hydroxide, silicon and other flame retardant systems.

Reactive flame retardant is as a monomer to participate in the polymerization reaction, so the polymer itself contains flame retardant components, its advantages are less impact on the use of polymer properties, flame retardant lasting.

Mechanism of flame retardant

The mechanism of action of flame retardant is complex and not clear yet.It is generally believed that halogen compounds are heated by fire and decomposed halogen ions react with macromolecular compounds to produce hydrogen halide.The latter reacts with the active hydroxyl free groups (Ho ·) that proliferate in large numbers during the combustion of polymer compounds, reducing its concentration and slowing down the combustion rate until the flame is extinguished.In halogens, bromine is more flame retardant than chlorine.Phosphorus flame retardants work because when they burn they form metaphosphoric acid, which polymerizes into a very stable polymer that acts as a protective layer on the plastic and insulates oxygen.

Amber Zhang Ms.

Foreign trade 

Zhejiang Ruico Advanced Materials Co., Ltd. (Stock No.873233)

Add: No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China 313018

Phone: +86 (572) 2903236

Fax: +86 (572) 2905222

Wechat: 15534631339

Website: www.ruicoglobal.com 

Email: [email protected]