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PBSeT-based biodegradable material and preparation method thereof

A degradable material and biological technology, applied in the field of biodegradable materials, can solve the problems of poor compatibility between calcium carbonate and polymer matrix

Active Publication Date: 2021-09-10
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, untreated calcium carbonate is less compatible with polymer matrices

Method used

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  • PBSeT-based biodegradable material and preparation method thereof
  • PBSeT-based biodegradable material and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0032] The present invention further provides a method for preparing a PBSeT-based biodegradable material, comprising the following steps:

[0033] First, the PBSeT material is added to the torque rheometer, and when the PBSeT material is in a molten state, Tannicacid and titanate-modified CaCO are added. 3 The mixed powder is mixed evenly, and then mixed evenly in a torque rheometer to obtain a PBSeT-based biodegradable material.

[0034] Further, the temperatures of the front, middle and rear plates in the torque rheometer are respectively set at 170-200°C, 180-210°C and 170-210°C.

[0035] As a further improvement of the technical solution of the preparation method of the present invention, all raw materials are uniformly blended in the torque rheometer in two steps, including: adding all raw materials to the torque rheometer, blending for 3 minutes, and then taking out the first product , and then the first product was shredded and put into the torque rheometer again for ...

Embodiment 1

[0044] Using the melt blending method, dry the synthesized PBSeT in a blast drying oven for 12 hours and weigh 56.16g. ~210°C. When the temperature rises to the specified temperature, adjust the rotor speed from 0 to 50-60rad / min, then add the weighed PBSeT into it, wait until it is in a molten state, and add 14.4g of CaCO modified by titanate 3 The powder mixed evenly with 1.44g Tannic acid was added to the reaction equipment, and the first product was taken out after blending for 3 minutes. Then the first product was shredded and put into the torque rheometer again for blending for 3 minutes, and the experiment ended.

Embodiment 2

[0046] Using the melt blending method, the synthesized PBSeT was dried in a blast drying oven for 12 hours and weighed 54.72g. ~210°C. When the temperature rises to the specified temperature, adjust the rotor speed from 0 to 50-60rad / min, then add the weighed PBSeT into it, wait until it is in a molten state, and add 14.4g of CaCO modified by titanate 3 The powder mixed evenly with 2.88g Tannic acid was added to the reaction equipment, and the first product was taken out after blending for 3 minutes. Then the first product was shredded and put into the torque rheometer again for blending for 3 minutes, and the experiment ended.

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Abstract

The invention belongs to the field of biodegradable materials in high polymer materials, and particularly relates to a PBSeT-based biodegradable material and a preparation method thereof, and the PBSeT-based biodegradable material is prepared from the following raw materials in parts by weight: 70-80 parts of PBSeT, 0-10 parts (not 0) of Tannic acid, and 0-20 parts of titanate modified CaCO3. According to the PBSeT-based biodegradable material disclosed by the invention, the puncture resistance and the tensile modulus of the PBSeT-based biodegradable material can be improved by the titanate-modified CaCO3 and the Tannic acid, and the puncture resistance and the tensile modulus are increased firstly and then reduced along with the increase of the content of the Tannic acid. The preparation method provided by the invention is relatively suitable, can improve the puncture resistance and tensile modulus of the PBSeT-based biodegradable material, and has very high market value.

Description

technical field [0001] The invention belongs to the field of biodegradable materials in polymer materials, in particular to a PBSeT-based biodegradable material and a preparation method thereof. Background technique [0002] Under the background of national environmental protection pressure and international and domestic double cycles, due to the excellent characteristics of bio-based and degradable materials, the use of bio-based plastics and degradable plastic products is one of the solutions to the problem of plastic pollution. [0003] In the past few years, my country's production capacity of biodegradable plastics was about 300,000 tons, accounting for 30% of the global production capacity. Among them, the production capacity of polylactic acid (PLA) plastics is about 50,000 tons, that of polybutylene adipate / terephthalate (PBAT) and polybutylene succinate (PBS) is 100,000 to 120,000 tons, and that of polyhydroxy 15,000 tons of fatty acid ester (PHA), 35,000 tons of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/04C08K3/26C08K5/1545
CPCC08K9/04C08K3/26C08K5/1545C08L2201/06C08K2003/265C08L67/02
Inventor 李迎春李枝茂牛茜炜赵今李萍王文生王志强
Owner ZHONGBEI UNIV