FIRE-RESISTANT NANOCOMPOSITE AND METHOD OF ITS OBTAINING Russian patent published in 2013 - IPC C09K21/14 C09K21/00 C08K13/02 C08J3/20 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to non-combustible producing little smoke polymer nanocomposites based on polybutylene terephthalate. Nanocomposite includes polybutylene terephthalate and organoclay, with the following component ratio, wt %: polybutylene terephthalate - 93-97, organoclay - 3-7. Organoclay is obtained from montmorillonite-based clay, modified with melamine and ammonium polyphosphate, with the following component ratio, wt %: clay - 90, melamine - 5, ammonium polyphosphate - 5. Method of obtaining nanocomposite consists in introduction of organoclay into polybutylene terephthalate melt. First, clay is modified, for which purpose suspension of clay is prepared, after which melamine and ammonium polyphosphate are introduced into suspension. Obtained organoclay is washed with water by repeated decantation and dried at room temperature. After that, polybutylene terephthalate is dried, polybutylene terephthalate and organoclay are loaded into moxer and mixed. Nanocomposite is obtained by mixing polybutylene terephthalate melt with organoclay in single screw type extruder.

EFFECT: nanocomposite is characterised by high fire resistance, little smoke production, absence of toxic gases and hot melt drops in burning products, made from it, with preservation of high level of physical and mechanical properties.

2 cl, 2 dwg, 1 tbl, 3 ex