Flame-retardant PTT

A technology of propylene glycol phthalate and propylene glycol, which is applied in the field of polymer materials, can solve the problems of great impact on post-processing, failure to achieve permanent flame retardancy, and large amount of flame retardants, and achieve good spinnability and mechanical properties. The effect of excellent, non-droplet flame retardant properties

Inactive Publication Date: 2015-08-19
王妮娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polytrimethylene terephthalate is treated with flame retardant by adding flame retardant, which has high flame retardant efficiency, mature technology and low price, but the large amount of flame retardant added has a great impact on the post-processing of the material itself. The application field has great limitations, and the flame retardant is easy to precipitate and cannot achieve the purpose of permanent flame retardancy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of flame-retardant poly(trimethylene terephthalate), whose components are proportioned by mass percentage: PTT 82%, phosphorus-containing monomer 8%, organic montmorillonite 5%, polyethylene glycol with a molecular weight of 1000-5000 4%, 0.5% trimethyl phosphate, 0.5% antioxidant, wherein, the PTT is a polyterephthalic acid made from terephthalic acid (PTA) and 1,3-propylene glycol (PDO) Propylene glycol ester, the phosphorus-containing monomer is 2-carboxyethyl alkylphosphonic acid, and the organic montmorillonite is activated by octadecyl dihydroxyethyl methyl ammonium chloride on the surface, and the particle size is 400 ~600 mesh sodium-based montmorillonite, the antioxidant is a compound of hindered phenolic antioxidant 1010 and phosphite antioxidant 168 with a mass ratio of 1:1.

[0020] Preparation method: (1) Preparation of phosphorus-containing monomer pre-polymerization solution: use 1,3-propylene glycol as solvent, dissolve phosphorus-containing monom...

Embodiment 2

[0022] A kind of flame-retardant poly(trimethylene terephthalate), whose components are proportioned by mass percentage: PTT 90%, phosphorus-containing monomer 4%, organic montmorillonite 2.8%, polypropylene oxide with a molecular weight of 1000-5000 3%, 0.1% trimethyl phosphate, 0.1% antioxidant, wherein, the PTT is a polyterephthalic acid made from terephthalic acid (PTA) and 1,3-propanediol (PDO) Propylene glycol ester, the phosphorus-containing monomer is 2-carboxyethylphenylphosphinic acid, and the organic montmorillonite is activated by octadecyl dihydroxyethyl methyl ammonium chloride on the surface, and the particle size is 400-600 mesh sodium-based montmorillonite, and the antioxidant is a compound of hindered phenolic antioxidant 1010 and phosphite antioxidant 168 at a mass ratio of 1:1.

[0023] Preparation method: (1) Preparation of phosphorus-containing monomer pre-polymerization solution: use 1,3-propylene glycol as solvent, dissolve phosphorus-containing monomer...

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Abstract

The present invention discloses a flame-retardant PTT, which comprises the following components in mass percentage: 80% to 95% of PTT, 2% to 8% of phosphorus-containing monomers, 1% to 5% of organic montmorillonite, 2% to 6% of aliphatic polyether, 0.1% to 0.5% of trimethyl phosphate, and 0.1% to 0.5% of antioxidant. The phosphorus-containing monomers are composed of 2-carboxyl ethyl alkyl phosphonic acid or 2-carboxyl ethyl phenyl phosphinic acid. The aliphatic polyether is composed of one component selected from polyethylene glycol, polytetrahydrofuran and polypropylene oxide, wherein the molecular weight of the aliphatic polyether is 1000-5000. According to the invention, the phosphorus-containing monomers are added for realizing the flame-retardant modification, and the organic montmorillonite is added for synergistically improving the char-forming characteristics and enhancing the droplet-proof performance. Therefore, the flame-retardant PTT is excellent in halogen-free, droplet-proof and flame-retardant performance, good in spinnability, excellent in mechanical property, simple in preparation process, low in cost and easy in popularization and application.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant polytrimethylene terephthalate. Background technique [0002] Polytrimethylene terephthalate (abbreviated as PTT) and polyethylene terephthalate (abbreviated as PET) and polybutylene terephthalate (abbreviated as PBT) are semi-aromatic polyesters. Each chain of PTT There are three methylene groups in the node, and the "odd carbon effect" is generated between the macromolecules to form a helical arrangement, so that the PTT polyester fiber can overcome the rigidity of PET and the flexibility of PBT at the same time, and has both the advantages of PET and PA, so PTT polyester has great development and application value in engineering plastics, fibers and other fields. However, polytrimethylene terephthalate, like other polyesters, is a flammable material and requires flame retardant treatment. As a new type of polyester, flame retardant poly(trimethyle...

Claims

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Application Information

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IPC IPC(8): C08G63/692C08G63/78C08K13/06C08K9/04C08K3/34C08K5/134C08K5/526
Inventor 不公告发明人
Owner 王妮娜
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