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Poly(p-dibenzoate) type polymer with controllable photodegradation rate and preparation method thereof

A technology of dibenzoic acid and polymers, which is applied in the field of photodegradation rate-controllable poly-terephthalate polymers and their preparation, to achieve the effect of solving environmental load problems

Inactive Publication Date: 2011-06-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to solve the existing problems in the above-mentioned prior art, and to provide a low-cost, easy-to-prepare photodegradation-speed-controllable poly-terephthalate polymer and a preparation method thereof

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: Polyterephthalate polymer masterbatch and nano-titanium dioxide and nitrogen composite photocatalyst are melt-mixed at a mass ratio of 95:5 to obtain PET with controllable photodegradation speed, wherein the compound of nano-titanium dioxide and nitrogen The mass ratio is 100:50; the masterbatch can be further made into other products, and the service life of the products can be controlled within 5 years.

Embodiment 2

[0009] Example 2: Melt and mix the polyethylene terephthalate polymer masterbatch and nano-titanium dioxide and nitrogen composite photocatalyst with a mass ratio of 97:3 to obtain PET with controllable photodegradation speed, wherein the compound of nano-titanium dioxide and nitrogen The mass ratio is 100:1000. The masterbatch can be further made into other products, and the service life of the products can be controlled within 5 years.

Embodiment 3

[0010] Example 3: Melting and mixing the polyethylene terephthalate polymer masterbatch and nano-titanium dioxide and nitrogen composite photocatalyst with a mass ratio of 96:4 to obtain PET with controllable photodegradation speed, wherein the compound of nano-titanium dioxide and nitrogen The mass ratio is 100:70. The masterbatch can be further made into other products, and the service life of the products can be controlled within 5 years.

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PUM

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Abstract

The invention relates to poly(p-dibenzoate) type polymer with controllable photodegradation rate and a preparation method thereof. The preparation method is as follows: poly(p-dibenzoate) type polymer masterbatch and nanometer titanium dioxide are molten and mixed with nitrogen or nanometer titanium dioxide, and the composite catalyst of nitrogen and iron or manganese or silver in a weight ratio of 95-98:2-5 to obtain the poly(p-dibenzoate) type polymer with controllable photodegradation rate. After photocatalyst is added, the machinability and operational performance of the product can not be affected and no additional environmental load of the polymer is generated. The problems of nondegradation and degradation rate of the poly(p-dibenzoate) type polymer in the natural state can be solved. As the poly(p-dibenzoate) type polymer is cheap, has large market dosage and has nondegradation owning to the stability, high environmental load is caused.

Description

technical field [0001] The invention relates to a polyterephthalate polymer and a preparation method thereof, in particular to a photodegradation rate-controllable polyterephthalate polymer and a preparation method thereof. Background technique [0002] Due to its excellent properties, plastics have been widely used, but the environmental pressure brought about by its stability continues to increase, and the problems caused by the post-processing of plastics are particularly difficult. Although methods such as landfilling, burning and recycling can be adopted, the research results have proved that these methods have disadvantages to varying degrees. Polyterephthalate polymers have been widely used in the packaging field due to their excellent properties, but the environmental load caused by the non-degradability of polyterephthalate polymers is also obvious. Contents of the invention [0003] The object of the present invention is to solve the above existing problems in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08J11/16
CPCY02W30/62
Inventor 刘保健来水利宋蕊卜宇王峥杨琳琳焦旭英田楠
Owner SHAANXI UNIV OF SCI & TECH
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