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Polyvinyl alcohol/montmorillonite nano-alloy foam material and preparation method thereof

A technology for polyvinyl alcohol and foaming materials, which is applied in the field of nano-alloy materials or polymer foaming materials, can solve the problems of environmental damage and difficult degradation of foamed materials, and achieves reduced usage, uniform cell size, and cell density. falling effect

Inactive Publication Date: 2013-10-16
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polymer foam materials have been widely used in recent years. However, traditional polyolefin foam materials are difficult to degrade and cause damage to the environment. Therefore, research on degradable foam materials is necessary
At present, there is no report on the preparation of polyvinyl alcohol / montmorillonite nano-alloy foaming materials by melt intercalation using non-aqueous plasticizers

Method used

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  • Polyvinyl alcohol/montmorillonite nano-alloy foam material and preparation method thereof
  • Polyvinyl alcohol/montmorillonite nano-alloy foam material and preparation method thereof
  • Polyvinyl alcohol/montmorillonite nano-alloy foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The raw materials used in this embodiment are:

[0032]

[0033]

[0034] Prepare foam material with above-mentioned raw material:

[0035] (1) Blend polyvinyl alcohol powder, plasticizer, one of the components in the reactive foaming agent and sodium-based montmorillonite in a high-speed mixer, keep the temperature below 50°C, and blend for a time of Mix the above materials evenly, and the blend is powder when it is discharged;

[0036] (2) Extrude and granulate the powder obtained in step (1) with a twin-screw extruder, wherein the temperature in the feeding zone is 150°C, the temperature in the middle section is 225°C, and the die head temperature is 235°C. The twin-screw extrusion aspect ratio is 30:1, the diameter is 65 mm, and the twin-screw speed is 120 rpm;

[0037] (3) Blend the pellets obtained in step (2) with another component of the reactive foaming agent in another mixer, keep the temperature below 80°C, and blend the materials until the above mate...

Embodiment 2

[0041] The raw materials used in this embodiment are:

[0042]

[0043] Prepare foam material with above-mentioned raw material:

[0044] (1) Mix polyvinyl alcohol powder, plasticizer and sodium montmorillonite in a high-speed mixer, keep the temperature below 50°C, and mix the materials until the above materials are evenly mixed, and the mixture will be powder when it is discharged. shape;

[0045] (2) Extrude and granulate the powder obtained in step (1) with a twin-screw extruder, wherein the temperature in the feeding zone is 150°C, the temperature in the middle section is 225°C, and the die head temperature is 235°C. The twin-screw extrusion aspect ratio is 30:1, the diameter is 65 mm, and the twin-screw speed is 120 rpm;

[0046] (3) Blend the pellets obtained in step (2) with ammonium carbonate in another mixer, keep the temperature below 80°C, and blend the time until the above-mentioned materials are mixed uniformly;

[0047] (4) Foaming the mixture obtained in st...

Embodiment 3

[0050] The raw materials used in this embodiment are:

[0051]

[0052] Prepare foam material with above-mentioned raw material:

[0053] (1) Mix polyvinyl alcohol powder, plasticizer and sodium montmorillonite in a high-speed mixer, keep the temperature below 50°C, and mix the materials until the above materials are evenly mixed, and the mixture will be powder when it is discharged. shape;

[0054] (2) Extrude and granulate the powder obtained in step (1) with a twin-screw extruder, wherein the temperature in the feeding zone is 150°C, the temperature in the middle section is 225°C, and the die head temperature is 235°C. The twin-screw extrusion aspect ratio is 30:1, the diameter is 65 mm, and the twin-screw speed is 120 rpm;

[0055] (3) Mix the pellets obtained in step (2) with azodimethylamide in another mixer evenly, keep the temperature below 80°C, and mix the materials until the above materials are mixed evenly;

[0056] (4) Foaming the mixture obtained in step (3...

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Abstract

The invention provides a polyvinyl alcohol / montmorillonite nano-alloy foam material and a preparation method thereof. The alloy foam material is prepared through using 55-95 parts by weight of polyvinyl alcohol powder, 5-40 parts by weight of a plasticizer, 0.01-5 parts by weight of montmorillonite and 0.25-5 parts by weight of a chemical foaming agent, wherein the consumption of the chemical foaming agent is calculated on the basis of using the dosage of polyvinyl alcohol as 100 parts by weight. Montmorillonite has the effects of a melt reinforcing agent, optimizes the foaming molding process of polyvinyl alcohol, and makes the foam material more suitable for the fusion extrusion foaming processing. Compared with polyvinyl alcohol foam materials without montmorillonite, the alloy foam material has the advantages of uniform cellular dimension, reduced blow hole and combined hole phenomena, and obviously decreased foam density.

Description

technical field [0001] The invention belongs to the field of nano-alloy materials or polymer foaming materials, and in particular relates to a polyvinyl alcohol / montmorillonite nano-alloy foaming material and a preparation method thereof. Background technique [0002] Polymer foaming materials have been widely used in recent years. However, traditional polyolefin foaming materials are difficult to degrade and cause damage to the environment. Therefore, research on degradable foaming materials is necessary. [0003] Polyvinyl alcohol is an environment-friendly polymer material. The molecular chain contains a large number of hydroxyl groups, which is water and biodegradable. Compared with other degradable polymer materials, it is cheap. Polyvinyl alcohol has good resistance to organic solvents, barrier properties and mechanical properties. Polyvinyl alcohol foaming materials are used in the preparation of filtration and adsorption materials for water treatment, sound insulatio...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08K13/02C08K3/34C08J9/06C08J9/10C08J9/08B29B9/06B29B7/30
Inventor 项爱民田华峰贾青青
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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