PET/clay nano composite materials and method for preparing same

A nanocomposite material and clay technology, which is applied in the field of PET/clay nanocomposite materials and their preparation, can solve the problems of nanocomposite materials that have not been seen in literature and patent reports, and achieve excellent oxygen and water vapor barrier properties, high strength, and improved performance. performance effect

Inactive Publication Date: 2006-10-11
NANJING COLLEGE OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are patent reports for PET / clay nanocomposites at home and abroad such as US5760121, CN1324890A, CN1465621A, but the nanocomposites prepared by the reactive intercalation agent used in this patent have no literature and patent reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Stir 0.1 part by weight of clay at high speed in the presence of 3 parts by weight of dispersion medium water to form a stable suspension. Add 0.1 part by weight of silicone surfactant [3-(trimethoxysilyl)methyl]dodecylmethylpropylammonium chloride into the suspension, and control the temperature at 50° C. for 5 hours with high-speed stirring. The resulting flocs were centrifuged, and the obtained filter cake was redispersed in 100 ml of toluene, stirred again, heated to reflux, added 1 weight part of epoxy resin and refluxed for 1 hour, then centrifuged, and the filter cake was washed with water until the filtrate was free of Chloride ions were dried in an oven at 50°C for 10 hours, then vacuum-dried at 80°C for 3 hours, and then pulverized to obtain a modified organoclay compound;

[0034] 0.1 parts by weight of the organic clay compound is uniformly dispersed in 100 parts by weight of PET, and extruded by a screw to obtain a PET / clay nanocomposite material.

Embodiment 2

[0036] 10 parts by weight of clay are stirred at a high speed in the presence of 100 parts by weight of a dispersion medium to form a stable suspension, and the organic silicon surfactant [3-(triethoxysilyl) propyl] octadecyl dimethyl Add 30 parts by weight of ammonium bromide into the suspension, react at 100°C for 1 hour, and centrifuge the obtained floc, redisperse the obtained filter cake in 500 ml of toluene, re-stir, heat up to reflux, add 20 parts by weight Reflux the epoxy resin for 1 hour, then centrifuge, wash the filter cake with water until the filtrate is free of chloride ions, dry it in an oven at 50°C for 10 hours, then dry it in a vacuum at 80°C for 3 hours, and then pulverize it, which is the modification organoclay compound;

[0037] 10 parts by weight of the organic clay compound is uniformly dispersed in 100 parts by weight of PET, and extruded by a screw to obtain a PET / clay nanocomposite material.

Embodiment 3

[0039] Embodiment 3 is basically the same as embodiment 2, but [3-(triethoxysilyl) propyl group] octadecyl dimethyl ammonium bromide is changed into [3-(trimethoxysilyl) methyl] ten Hexaalkyldimethylammonium chloride.

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PUM

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Abstract

Disclosed is a PET/clay nano composite material comprising the following constituents (by weight ratio): PET 100 parts, clay 0.1-10 parts, organosilicon surface active agent 0.1-30 parts, epoxy resin 10-20 parts and dispersion medium 3-1000 parts.

Description

technical field [0001] The present invention relates to a kind of PET / clay nano-composite material and preparation method thereof, more precisely the present invention relates to using a class of organic silicon surfactant containing reactive type and modifying layer with organic silicon surfactant and epoxy resin A type of PET / clay nanocomposite material formed by filling a PET system with a silicate and a preparation method thereof. It belongs to the technical field of new materials and their preparation. Background technique [0002] PET, or polyethylene terephthalate, is currently the resin with the fastest growing consumption in plastic packaging, but PET is not resistant to high temperatures and cannot well block the penetration of gas, so there are some problems in packaging, especially in beer packaging. Due to insufficient carbon dioxide content, it is easy to oxidize and deteriorate beer, and the storage period of beer is relatively short, so its application is gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/03C08K5/54C08J3/20C08K3/34C08L63/02
Inventor 卞进发周宁琳王军平薛华玉张晓黎陈健
Owner NANJING COLLEGE OF CHEM TECH
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