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Exfoliated montmorillonite/maleic anhydride-styrene ionomer as well as preparation method and application thereof

A technology of maleic anhydride and montmorillonite, which is applied in the field of exfoliated montmorillonite/maleic anhydride-styrene ionomer composite materials and its preparation, can solve the problem of reducing the effect and easy agglomeration of nano-organic montmorillonite Waiting for the problem together to achieve the effect of speed up, low cost and convenient operation

Inactive Publication Date: 2013-11-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymer ionomers can react with the ends of PET chain segments to provide crystallization sites to play the role of heterogeneous nucleation; nano-organic montmorillonite is a multi-layer structure, and blending nano-organic montmorillonite into PET is similar to Blending inorganic substances such as talcum powder can also play the role of heterogeneous nucleation, but the nano-organic montmorillonite is easy to agglomerate, which reduces its effect. Therefore, it is necessary to peel off the nano-organic montmorillonite to make it Better dispersion in PET melt

Method used

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  • Exfoliated montmorillonite/maleic anhydride-styrene ionomer as well as preparation method and application thereof
  • Exfoliated montmorillonite/maleic anhydride-styrene ionomer as well as preparation method and application thereof
  • Exfoliated montmorillonite/maleic anhydride-styrene ionomer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Synthesis of montmorillonite / styrene-maleic anhydride copolymer

[0029] Mix 1g of organic montmorillonite, 9.8g of maleic anhydride monomer, 10.4g of styrene monomer, 0.0242g of benzoyl peroxide and 200ml of solvent, and heat the reaction at 80°C for 1 hour in a nitrogen atmosphere. The product is precipitated in the precipitant solution, purified and dried.

[0030] (2) Preparation of montmorillonite / styrene-maleic anhydride ionomer

[0031] Dissolve the dried montmorillonite / 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 be released from the solution Precipitation, vacuum filtration to obtain ionomer solid. The obtained ionomer solid is purified to finally obtain a pure exfoliated montmorillonite / styrene-maleic anhydride ionomer, which is dried in vacuum.

Embodiment 2

[0033] (1) Synthesis of montmorillonite / styrene-maleic anhydride copolymer

[0034] Mix 2g of organic montmorillonite, 9.8g of maleic anhydride monomer, 55g of styrene monomer, 0.0242g of benzoyl peroxide and 200ml of solvent, and heat the reaction at 80°C for 1.5 hours in a nitrogen atmosphere. It is precipitated, purified and dried in the precipitant solution.

[0035] (2) Preparation of montmorillonite / styrene-maleic anhydride ionomer

[0036] 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 to finally obtain a pure exfoliated montmorillonite / styrene-maleic anhydride ionomer, which is dried in vacuum.

Embodiment 3

[0038] (1) Synthesis of montmorillonite / styrene-maleic anhydride copolymer

[0039] Mix 4g of organic montmorillonite, 9.8g of maleic anhydride monomer, 10.4g of styrene monomer, 0.0484g of benzoyl peroxide and 200ml of solvent, and heat the reaction at 80°C for 1.5 hours in a nitrogen atmosphere. The product is precipitated in the precipitant solution, purified and dried.

[0040] (2) Preparation of montmorillonite / styrene-maleic anhydride ionomer

[0041] 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 to finally obtain a pure exfoliated montmorillonite / styrene-maleic anhydride ionomer, which is dried in vacuum.

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to an exfoliated montmorillonite / maleic anhydride-styrene ionomer composite material as well as a preparation method and an application thereof. The preparation method disclosed by the invention comprises the following steps: by virtue of in-situ intercalation free-radical polymerization, enabling monomers to enter organic montmorillonite (MMT) sheet layers via a diffusion action and then polymerizing among the MMT sheet layers, and opening and exfoliating the MMT sheet layers by virtue of polymerization heat, so as to form an exfoliated montmorillonite and maleic anhydride-styrene copolymer composite material; and performing hydrolysis and salinization on the copolymer composite material to prepare the exfoliated montmorillonite and maleic anhydride-styrene ionomer composite material. The ionomer composite material can be used as a nucleating agent for PET (polyethylene terephthalate), and is capable of remarkably increasing the crystallization temperature and crystallization speed of the PET. The ionomer composite material is simple in preparation method, capable of adopting a one-time process of mixing-reaction extruding granulation with the PET, convenient to operate, high in benefits, low in cost, and suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an exfoliated montmorillonite / maleic anhydride-styrene ionomer composite material and a preparation method and application 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 ...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F222/08C08F8/44C08F8/12C08K9/04C08K3/34C08L35/06C08L67/02
Inventor 唐萍邢士理
Owner FUDAN UNIV
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