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A polymer/clay nanocomposite material with core-shell structure and preparation method thereof

A technology of nano-composite materials and core-shell structure, applied in the field of materials, can solve the problems of insufficient core-shell polymer/clay composite materials, and achieve the effects of improved processing fluidity, slowed thermal decomposition rate, and mature technology

Inactive Publication Date: 2017-11-24
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the few existing core-shell polymer / clay composite materials, the purpose of the present invention is to broaden and deepen the research and development system of core-shell polymer / clay and the formation mechanism of core-shell, and provide a method that can be used to improve and enhance Core-shell polymer / clay nanocomposites with thermal properties, processing properties, mechanical properties, etc.

Method used

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  • A polymer/clay nanocomposite material with core-shell structure and preparation method thereof
  • A polymer/clay nanocomposite material with core-shell structure and preparation method thereof
  • A polymer/clay nanocomposite material with core-shell structure and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] Example 1: Preparation of the core-shell structure polymer / clay nanocomposite material of the present invention

[0036] (1) Fully stir 1 part of organic montmorillonite and 70% of the total mass of distilled water at 45°C for 1 hour;

[0037] (2) Mix 40 parts of styrene, 2 parts of acrylic acid, 7% of the core monomer mass of the composite emulsifier, 70% of the total mass of the co-emulsifier, and 8% of the total mass of distilled water, fully stirred and mixed at 60°C to obtain the core layer Monomer pre-emulsion;

[0038] (3) 20 parts of n-butyl acrylate, 0.6 parts of acrylic acid, 5% shell monomer mass of composite emulsifier, 30% of the total mass of co-emulsifier and 8% of the total mass of distilled water, fully stirred and mixed to obtain a shell mono Body pre-emulsion;

[0039] (4) Take 20% of the total mass from the nuclear layer monomer pre-emulsion obtained in step (2), and take 20% of the total mass from the nuclear layer initiator, stir and mix the two, and heat...

Embodiment 2

[0042] Example 2: Preparation of the core-shell structure polymer / clay nanocomposite material of the present invention

[0043] (1) Fully stir 0.5 part of organic montmorillonite and 40% of the total mass of distilled water at 40°C for 1 hour;

[0044] (2) Mix 20 parts of styrene, 1 part of acrylic acid, 7% of the core monomer mass of the composite emulsifier, 70% of the total mass of the co-emulsifier and 15% of the total mass of distilled water, and stir and mix thoroughly at 50℃ to obtain the core layer Monomer pre-emulsion;

[0045] (3) 20 parts of n-butyl acrylate, 1 part of acrylic acid, 5% shell monomer mass of composite emulsifier, 30% of the total mass of co-emulsifier and 15% of the total mass of distilled water, fully stirred and mixed to obtain a shell mono Body pre-emulsion;

[0046] (4) Take 15% of the total mass from the nuclear layer monomer pre-emulsion obtained in step (2), and take 15% of the total mass from the nuclear layer initiator, stir and mix the two, and he...

Embodiment 3

[0049] Example 3: Preparation of the core-shell structure polymer / clay nanocomposite material of the present invention

[0050] (1) Mix 0.8 parts of organic montmorillonite and 75% of the total mass of distilled water at 40°C for 1 h;

[0051] (2) Mix 30 parts of styrene, 1.5 parts of acrylic acid, 7% of the core monomer mass of the composite emulsifier, 65% of the total mass of the co-emulsifier and 6% of the total mass of distilled water, and stir and mix thoroughly at 50℃ to obtain the core layer Monomer pre-emulsion;

[0052] (3) 30 parts of n-butyl acrylate, 1.5 parts of acrylic acid, 5% shell monomer mass of composite emulsifier, 35% of the total mass of co-emulsifier and 6% of the total mass of distilled water, fully stirred and mixed to obtain a shell mono Body pre-emulsion;

[0053] (4) Take 20% of the total mass from the nuclear layer monomer pre-emulsion obtained in step (2), and take 20% of the total mass from the nuclear layer initiator, stir and mix the two, and heat up...

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Abstract

The invention relates to a polymer / clay nanocomposite material with a core-shell structure and a preparation method thereof. The composite material of the present invention is a core-shell structure with polystyrene / organic montmorillonite as the core layer and n-butyl polyacrylate as the coating shell layer; the appearance color is white; the polymer formed before demulsification The latex particles are spherical, with a particle size of 70-90nm, and after dyeing with phosphotungstic acid, it can be observed that the latex particles have a core-shell structure; the core layer of the composite material is composed of the following components in parts by mass through the seed emulsion polymerization method Prepared: 20-40 parts of styrene; 0-2 parts of acrylic acid; 0-2 parts of organic montmorillonite; the shell layer of the composite material is prepared by the seed emulsion polymerization method of the following components in parts by mass: acrylic acid positive 20-40 parts of butyl ester; 0-2 parts of acrylic acid. The core-shell structure polymer / clay nanocomposite material of the invention improves and enhances the thermal performance, processing performance and mechanical performance of the material.

Description

Technical field [0001] The invention belongs to the technical field of materials, and specifically relates to a polystyrene (PSt) / organic montmorillonite (OMMT) core, poly(n-butyl acrylate) used to improve and enhance the thermal performance, processing performance, and mechanical properties of materials. PBA) is a shell nanocomposite material and its preparation method. Background technique [0002] The core / shell type nanoparticle is a composite multiphase structure formed by a spherical particle with a size ranging from micrometer to nanometer level as the core and coating several layers of uniform nanofilm on its surface. The core and the shell are physically or chemically The functions are interconnected. Core / shell materials in a broad sense include not only composite materials with core-shell structures composed of the same or different substances, but also materials such as hollow spheres and microcapsules. Core / shell composite microspheres integrate many specific prope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/08C08L33/08C08K3/34C08F212/08C08F220/06C08F220/18C08F2/26C08F2/30
Inventor 刘玲王秀丽韦寿莲刘永严子军
Owner ZHAOQING UNIV
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