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A kind of photo-oxygen degradable pet composite material and its preparation method and application

A composite material and degradable masterbatch technology, applied in the field of new polymer materials, can solve problems such as the expansion of the application range of PET, the inability of tableware to degrade by itself, natural environment pollution and harm, etc., to shorten the molding cycle and have little impact on performance. , the effect of increasing the number of nuclei

Active Publication Date: 2020-12-04
广州泽田餐饮用品实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET has the disadvantages of high glass transition temperature, slow crystallization speed, long molding cycle, long molding cycle, large molding shrinkage, poor dimensional stability, brittle crystallized molding, and low heat resistance, which seriously affect PET. Expansion of application range
Moreover, the tableware made of PET cannot be degraded by itself in the natural environment, which brings serious pollution and harm to the natural environment. Therefore, it is necessary to provide a green and environmentally friendly photo-oxygen-degradable PET composite material to meet the market demand.

Method used

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  • A kind of photo-oxygen degradable pet composite material and its preparation method and application
  • A kind of photo-oxygen degradable pet composite material and its preparation method and application
  • A kind of photo-oxygen degradable pet composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 degradation accelerator preparation

[0028] (1) Preparation of fullerene carboxylic acid derivatives:

[0029] S1: Add fullerene C60 to toluene to make 10 -3 mol / L solution, then 1,8-diazabicycloundec-7-ene (DBU) and diethyl bromomalonate were added dropwise to the toluene solution of C60, the C60: DBU : the mol ratio of diethyl bromomalonate is 1:3:3, stirring at room temperature for 1h carries out addition reaction, and after the reaction finishes, separation and purification are carried out on a silica gel column to obtain the three-addition carboxylate of fullerene C60;

[0030] S2: Add the tri-addition carboxylate of fullerene C60 obtained in S1 to NaH, the mass ratio of the tri-addition carboxylate of fullerene C60:NaH is 1:100, at 70°C Hydrolyze for 8 hours, finally add water for extraction, take the lower aqueous solution to obtain C60 sodium carboxylate, finally add HCl and methanol to acidify, filter, and vacuum-dry the filtrate to obtain the f...

Embodiment 2

[0035] The preparation of embodiment 2PET composite material

[0036] The PET composite material includes the following components in weight percentage: 83% of PET, 15% of chitosan fiber, 0.3% of Pinecrystal KM-1600, 1% of photo-oxidative degradation masterbatch and 0.7% of degradation accelerator. .

[0037] Preparation steps:

[0038] S1: Stir and mix PET, chitosan fiber, rosin acid crystallization nucleating agent, photo-oxidative degradation masterbatch and degradation accelerator to obtain a mixture;

[0039] S2: Put the mixture obtained in S1 into a twin-screw extruder for blending, melting, extrusion, cooling, drying, and pelletizing to obtain a photo-oxygen-degradable PET composite material; wherein, the process parameters of the twin-screw extruder are set As follows: feeding port room temperature 80-100°C, feeding section 260-265°C, compression section 265-270°C, metering section 270-275°C, adapter 275-280°C, die section 275-280°C; host screw speed 150-220rpm, con...

Embodiment 3

[0040] The preparation of embodiment 3 PET composite material

[0041] The PET composite material includes the following components in weight percentage: 85% of PET, 12.6% of chitosan fiber, 0.4% of Pinecrystal KM-1600, 1.5% of photo-oxidative degradation masterbatch and 0.5% of degradation accelerator.

[0042] Refer to Example 2 for the preparation steps.

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PUM

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Abstract

The invention discloses a photooxidatively-degradable PET composite material as well as a preparation method and application thereof. The PET composite material comprises the following components in percentage by weight: 75-85% of PET, 10-25% of a chitosan fiber, 0.2-0.4% of a rosin acid crystal nucleating agent, 0.5-1.5% of photooxidatively-degradable masterbatch and 0.5-1% of a degradation promoter. The PET composite material has very good degradability and a short degradation cycle and is thoroughly and rapidly degraded, and residues after degradation do not have any influence on animals, plants and soil; in addition, the PET composite material is fast in crystallization, short in moulding cycle, convenient to process and use, relatively high in heat resistance and good in mechanical properties; meanwhile, the PET composite material is safe and non-toxic, does not release harmful and toxic components, and can be applied to preparation of a food packaging material or tableware.

Description

technical field [0001] The invention relates to the technical field of new polymer materials, in particular to a photo-oxygen-degradable PET composite material and its preparation method and application. Background technique [0002] Along with the rapid development of economy, in order to adapt to the fast pace of modern life, fast food also arises at the historic moment. Plastic tableware products are cheap and easy to use. They are frequently used in daily life and can be seen almost everywhere. However, after these polymer plastic tableware are used and discarded, the recycling cost is high, and they are buried underground, difficult to degrade, and destroy the soil structure; burning and incinerating will produce harmful waste, destroy the ecological balance, and cause serious white pollution. With the gradual strengthening of people's awareness of environmental protection, they began to look for materials with good degradability that can replace traditional plastics. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L5/08C08L93/04C08K3/04C08K5/09
CPCC08L67/02C08L2201/06C08L2201/08C08L2201/10C08L2205/24C08L5/08C08L93/04C08K3/045C08K5/09
Inventor 陈国英
Owner 广州泽田餐饮用品实业有限公司