Attapulgite flame retardant and preparation method

Abstract

The invention discloses an attapulgite flame retardant and a preparation method thereof, which consists of the following components in parts by weight: 5-15 parts of high-viscosity attapulgite clay powder, 5-20 parts of attapulgite clay tailings powder , 7~17 parts of spherical attapulgite refractory ceramsite, 3~13 parts of pyroclastic rock mixture, 3~15 parts of magnesium hydroxide, 7~19 parts of trihydroxyethylisocyanurate, 2~20 parts of straw powder 5-15 parts of bentonite tailings powder and 10-30 parts of water. The invention provides an attapulgite flame retardant. Attapulgite has a good length-to-diameter ratio and abundant inner pores, which is not only a good reinforcing material but also has a flame retardant effect. It loses structural water at high temperature and produces water vapor. , can block oxygen, and can produce MgO, Al with better thermal stability 2 o 3 The main oxide isolation layer. In the flame retardant, trihydroxyethyl isocyanurate is added as an expansion flame retardant, and attapulgite is used as a synergist, so that the flame retardant effect is better. The preparation method is simple and easy, and the cost is low.

Description

Technical field [0001] The invention belongs to the field of flame retardants, and specifically relates to an attapulgite flame retardant and a preparation method thereof. Background technique [0002] With the increasing awareness of global safety and environmental protection, people have higher and higher requirements for fire safety and flame retardant products. Environmentally friendly flame retardants that are halogen-free, low-smoke, and low-toxic have become people's pursuit of goals. Flame retardants are currently mainly organic and inorganic, halogen and non-halogen. Organic is some flame retardants represented by bromine, phosphorus nitrogen, nitrogen and red phosphorus and compounds. Inorganic are mainly antimony trioxide, magnesium hydroxide, aluminum hydroxide, silicon and other flame retardant systems. [0003] At present, polymer materials are used more and more widely in people's lives. With the continuous development of polymer materials industry, polymer material...

AI Technical Summary

Problems solved by technology

[0005] Pyroclastic rocks coexist with attapulgite clay deposits. Pyroclastic rocks are mostly in the upper layer of attapulgite clay deposits. In some attapulgite clay deposits, the thickness of pyroclastic rock deposits in the upper layer is as high as tens of meters. During the mining process of attapulgite clay, the pyroclastic rock in the upper layer of the attapulgite clay mining area is discarded as waste. According to field investigations, more than 30 tons of pyroclastic rock are produced for every ton of attapulgite clay mined, according to Calculated at an annual output of 150,000 tons, the generated pyroclastic rocks are as high as 4.5 million tons, which have not been utilized for many years. The entire mining area is full of re-accumulated pyroclastic mixtures, causing serious waste of resources and economic losses.

[0006] The traditional flame retardants are halogenated flame retardants or halogenated and other mixed synergistic flame retardants, but because brominated flame retardants tend to generate more smoke, corrosive gases and toxic gases during combustion, and Gradually restricted and banned