Phosphonate structure-containing ionic monomer and flame-retarding and smoke-suppressing ionomer synthesized under catalysis of ionic monomer, and preparation methods and applications thereof

Abstract

The invention discloses a phosphonate structure-containing ionic monomer and a flame-retarding and smoke-suppressing ionomer synthesized under the catalysis of the ionic monomer, and preparation methods and applications thereof. The flame-retarding and smoke-suppressing ionomer is a copolyester monomer prepared from a binary acid or an ester thereof and a C2-C8 polyol through successively carryingout an esterifying reaction and a polycondensation reaction with the phosphonate structure-containing ionic monomer as a catalyst. The phosphonate structure-containing ionic monomer has an excellentcatalytic capability, can well catalyze an ester exchange reaction and a melt phase polycondensation reaction to obtain the ionomer with a high polymerization degree, and also can catalyze carbon formation during combustion so as to make the ionomer have good flame-retarding and smoke-suppressing effects, and a methyl ester bond in the ionic monomer can be connected to a polyester main chain to avoid migrate-out and environment pollution, thereby the ionomer can be used in textile fibers, engineering plastics and packaging materials. The preparation method is mature, simple and convenient, andis easy for industrial production.

Description

technical field [0001] The invention belongs to the technical field of reactive ionic monomers, flame-retardant and smoke-suppressing copolyester ionomers and their preparation. Fire and smoke suppressing ionomers and their preparation and use. Background technique [0002] Polyesters, such as polyethylene terephthalate (PET), are widely used in packaging materials, textile fiber, engineering plastics and other fields. However, in the polyester production process, most of the catalysts used in the polymerization reaction are antimony-based catalysts. The catalytic efficiency of antimony-based catalysts is generally low, and the heavy metal antimony is easy to move out of the product and enter the environment during the use of polyester products. Studies have shown that antimony has chronic toxicity and carcinogenicity to humans and organisms. Antimony and its compounds are listed as priority pollutants by the US Environmental Protection Agency and the European Union. Ther...

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Problems solved by technology

Moreover, halogenated flame retardants will decompose and produce organic substances that are difficult to biodegrade. If these organic substances are enriched in the human body, they will cause long-term harm to people's health.

At the same time, due to the good crystallization performance of pure PET, dense crystal regions, and mainly hydrophobic benzene rings, ester bonds and fatty chains in the molecular structure, the cationic dyeing performance of PET polyester fibers is generally poor. Fiber (CDP) mostly uses isophthalic acid-5-sodium sulfonate ion monomer to improve its ability to absorb fuel

However, the traditional CDP cationic dyeing process generally needs to be carried out under high temperature and high pressure conditions, which also increases its processing cost.

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