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Nucleating agent of polyethylene glycol terephthalate and preparation method thereof

A technology of polyethylene terephthalate and nucleating agent is applied in the field of nucleating agent of polyethylene terephthalate and its preparation, and can solve the problems of difficulty in finding a compatibilizer, complicated operation process, and difficulty in Industrialization and other problems, to achieve the effect of accelerating the crystallization rate, simple preparation process, and increasing the melting crystallization temperature

Inactive Publication Date: 2013-02-13
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The copolymerization method mainly refers to the copolymerization of 1,4-butanediol, 1,3-propanediol, p-hydroxybenzoic acid and other monomers in the PET esterification process, but this method has complicated operation process and is not easy to industrialize
The blending method is mainly to blend PET with PBT, PC, PA, PLA, polyolefin, etc. to improve the crystallization properties of PET, but it is difficult to find a suitable compatibilizer for the blending method

Method used

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  • Nucleating agent of polyethylene glycol terephthalate and preparation method thereof
  • Nucleating agent of polyethylene glycol terephthalate and preparation method thereof
  • Nucleating agent of polyethylene glycol terephthalate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Synthesis of styrene-maleic anhydride copolymer

[0027] Mix 9.8g of maleic anhydride monomer, 10.4g of styrene monomer, 0.0242g of benzoyl peroxide and 200ml of cyclohexanone, and heat the reaction at 80°C for 1 hour in a nitrogen atmosphere. Precipitate from the solvent solution, purify, and vacuum dry.

[0028] (2) Preparation of styrene-maleic anhydride ionomer

[0029] Dissolve the dried styrene maleic anhydride copolymer in 1,4-dioxane solution, drop into the solution a saturated solution of sodium hydroxide in methanol, the generated ionomer will precipitate from the solution, vacuum pump Filtration yielded an ionomer solid. The obtained ionomer solid is purified and vacuum-dried to finally obtain a pure styrene-maleic anhydride ionomer.

Embodiment 2

[0031] (1) Synthesis of styrene-maleic anhydride copolymer

[0032] Mix 9.8g of maleic anhydride monomer, 55g of styrene monomer, 0.0242g of benzoyl peroxide and 200ml of cyclohexanone, and heat the reaction at 80°C for 1.5 hours in a nitrogen atmosphere. solution, purified and dried.

[0033] (2) Preparation of styrene-maleic anhydride ionomer

[0034] Dissolve the dried styrene-maleic anhydride copolymer in 1,4-dioxane solution, drop into the solution a saturated solution of barium hydroxide in methanol, the generated ionomer will precipitate out of the solution, vacuum pump Filtration yielded an ionomer solid. The obtained ionomer solid is purified and vacuum-dried to finally obtain a pure styrene-maleic anhydride ionomer.

Embodiment 3

[0036] (1) Synthesis of styrene-maleic anhydride copolymer

[0037] Mix 9.8g of maleic anhydride monomer, 10.4g of styrene monomer, 0.0484g of benzoyl peroxide and 200ml of cyclohexanone, and heat the reaction at 80°C for 1.5 hours in a nitrogen atmosphere. solution, purified and dried.

[0038] (2) Preparation of styrene-maleic anhydride ionomer

[0039] Dissolve the dried styrene maleic anhydride copolymer in 1,4-dioxane solution, drop into the solution a saturated solution of sodium hydroxide in methanol, the generated ionomer will precipitate from the solution, vacuum pump Filtration yielded an ionomer solid. The obtained ionomer solid is purified and vacuum-dried to finally obtain a pure styrene-maleic anhydride ionomer.

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Abstract

The invention belongs to the technical field of macromolecule materials, and particularly relates to a nucleating agent of the polyethylene glycol terephthalate and a preparation method thereof. The agent utilizes random copolymer or alternating copolymer of maleic anhydride and styrene as raw materials, and conducts hydrolysis, salinization and purification to obtain styrene-maleic anhydride ionomer. The styrene-maleic anhydride ionomer can serve as the nucleating agent of the polyethylene glycol (PET), increases crystallization temperature of the PET and increases crystallization rate. The nucleating agent is simple in preparation method, capable of adopting blending smelting reaction extrusion pelleting once process with the PET, convenient to operate, high in benefit, low in cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a nucleating agent suitable for polyethylene terephthalate and a preparation method thereof. Background technique [0002] As a general-purpose thermoplastic, polyethylene terephthalate (PET) can be divided into non-engineering plastic grades and engineering plastic grades. Non-engineering plastic grades are mainly used in fibers, beverage bottles, sheets, baking-resistant food containers, etc., and engineering plastic grades are mainly used in automobiles, electronic appliances, and machinery industries. The long-term use temperature of PET can reach 120°C, and it has excellent physical and mechanical properties in a relatively high temperature range, such as high impact strength, friction resistance, high rigidity, high hardness, stable size, good electrical insulation performance, and insoluble in most Most organic solvents and inorganic acids, so PET is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/06C08L25/06C08L35/06C08L67/02
Inventor 唐萍邢士理
Owner FUDAN UNIV
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