Preparation method of heat-resistant oxygen-resistant polyester film

A technology of oxygen polyester and film, which is applied in the field of preparation of organic polymer compounds, and can solve the problem of affecting the heat and oxygen resistance of PET polyester film, affecting the uniformity of heat and oxygen resistance of the film, and the poor dispersion uniformity of antioxidants. and other problems, to achieve the effect of high temperature resistance, simple process and excellent mechanical properties

Active Publication Date: 2013-01-16
四川东方绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the processing is simple in this way, the obtained heat-resistant oxygen PET polyester masterbatch also has certain heat-resistant oxygen performance, but in the process of heat-resistant oxygen-resistant PET polyester masterbatch processing, due to the high processing temperature of the extruder (up to Above 280°C), these antioxidants partially decompose at high temperatures, resulting in a decrease in the effective content of antioxidants, but more importantly, the dispersion uniformity of antioxidants in the masterbatch is poor, which directly affects the heat resistance of the film. Uniformity of performance
Therefore, the heat-resistant oxygen-resistant PET polyester chips prepared by the masterbatch method often migrate and precipitate due to the poor compatibility of the above-mentioned small molecular structure antioxidants, auxiliary antioxidants, heat stabilizers and PET polyester chips. It affects the long-term heat and oxygen resistance of heat-resistant oxygen-resistant PET polyester film

Method used

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  • Preparation method of heat-resistant oxygen-resistant polyester film
  • Preparation method of heat-resistant oxygen-resistant polyester film
  • Preparation method of heat-resistant oxygen-resistant polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0056] Dissolve 22 parts by mass of sodium 4-hydroxybenzylthiophenate and 8 parts by mass of 1,3,5-trichlorobenzene in 80-100 parts by mass of N,N-dimethylformamide (DMF) solvent, and add a catalyst of 0.06 Parts by mass of palladium acetate, react at 90°C to 95°C for 1.5hr to 2hr, after the reaction is completed, distill off DMF under reduced pressure at 0.08 to 0.10MPa, and then use 50 parts by mass of isopropanol to extract the DMF once Then collect the extract, distill off isopropanol under reduced pressure at 0.08-0.10MPa to obtain 1,3,5-tris(4-hydroxybenzylthio)benzene liquid.

Embodiment 1-2

[0058] Dissolve 23 parts by mass of sodium 4-hydroxybenzylthiophenate and 8 to 10 parts by mass of 1,3,5-trichlorobenzene in 80 to 100 parts by mass of N,N-dimethylformamide (DMF) solvent, add Catalyst 0.10 parts by mass of iron acetate, react at 90°C to 95°C for 1.5hr to 2hr, after the reaction is completed, distill off DMF under reduced pressure at 0.08 to 0.10MPa, then extract with 60 parts by mass of isopropanol once to remove DMF The reactant; then collect the extract, and distill off isopropanol under reduced pressure at 0.08-0.10MPa to obtain 1,3,5-tris(4-hydroxybenzylthio)benzene liquid.

Embodiment 1-3

[0060] Dissolve 25 parts by mass of sodium 4-hydroxybenzylthiophenate and 8 parts by mass of 1,3,5-trichlorobenzene in 80-100 parts by mass of N,N-dimethylformamide (DMF) solvent, and add a catalyst of 0.08 Parts by mass of cobalt acetate, reacted at 90°C to 95°C for 1.5hr to 2hr, after the reaction was completed, distilled off DMF under reduced pressure at 0.08 to 0.10MPa, and then extracted twice with 80 parts by mass of isopropanol from which DMF had been removed Reactant; then collect the extract, distill off isopropanol under reduced pressure at 0.08-0.10MPa to obtain 1,3,5-tris(4-hydroxybenzylthio)benzene liquid.

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Abstract

The invention discloses a preparation method of a heat-resistant oxygen-resistant polyester film. The preparation method is characterized by including the steps of preparation of hydroxy thiophenol containing compounds, preparation of sulfur-containing hindered phenol antioxidants, polyester synthesis and film processing. The preparation method includes: using 4-hydroxy benzyl thiophenol sodium, 1, 3, 5-trichlorobenzene, 1, 3, 5-tribromobenzene and 2, 4, 6-tri(4-hydroxy benzyl thiophenyl)-1, 3, 5-triazine to synthesize the hydroxy thiophenol containing compounds, namely, 1, 3, 5-tri(4-hydroxy benzyl thiophenyl) benzene and 2, 4, 6-tri(4-hydroxy benzyl thiophenyl)-1, 3, 5-triazine in N, N-dimethyl formamide solvent; synthesizing the 1, 3, 5-tri(4-hydroxy benzyl thiophenyl) benzene, the 2, 4, 6-tri(4-hydroxy benzyl thiophenyl)-1, 3, 5-triazine and 3, 5-di-tert-butyl-4-hydroxy phenylacrylic acid methyl ester to prepare the type A reactive sulfur-containing hindered phenol antioxidant and the type B reactive sulfur-containing hindered phenol antioxidant; and synthesizing the type A reactive sulfur-containing hindered phenol antioxidant, the type B reactive sulfur-containing hindered phenol antioxidant, terephthalic acid and ethylene glycol to prepare heat-resistant oxygen-resistant polyester resin, so that the heat-resistant oxygen-resistant polyester film good in performance is prepared.

Description

technical field [0001] The invention belongs to a preparation method of an organic polymer compound, and relates to a preparation method of a heat-resistant oxygen-resistant polyester film. The heat-resistant oxygen-resistant polyester film prepared by the invention can be applied to fields such as motors and electrical products in high-temperature environments or long-term overload operation, as well as insulation of building bus ducts. Background technique [0002] During the use of polyethylene terephthalate (PET) film (that is, PET polyester film), oxidation reaction occurs in the presence of heat and oxygen, which gradually deteriorates the mechanical properties of the material, resulting in a greatly increased service life. shorten. Therefore, in order to inhibit the thermal oxygen aging reaction of PET polyester film, it is generally necessary to add an antioxidant that can delay the thermal oxygen aging of the material, so that the material has thermal oxygen resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K5/375C08G63/183C08G63/78C07C319/20C07C323/19C07D251/38B29C55/14B29L7/00B29K67/00
Inventor 张世明罗春明胡俊祥周柯
Owner 四川东方绝缘材料股份有限公司
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