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Photo-oxygen and biodegradable plastic containing bio-based material and preparation method thereof

A biodegradable and biodegradable technology, applied in the field of photooxygen containing bio-based materials, biodegradable plastics and their preparation, can solve the problem that degradable plastics are difficult to recycle, visual pollution cannot be completely eliminated, and mildew of distiller's grains cannot be solved to achieve rapid and complete degradation, high economic benefits and social value, and a wide range of applications

Inactive Publication Date: 2019-05-14
王玉廷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tests have shown that most degradable plastics begin to become thinner, lose weight, and lose strength after being exposed to the general environment for 3 months, and gradually break into pieces
If these fragments are buried in garbage or soil, the degradation effect is not obvious
There are four shortcomings in the use of degradable plastics: first, it consumes more food; second, the use of degradable plastic products still cannot completely eliminate "visual pollution"; third, due to technical reasons, the use of degradable plastic products cannot completely solve the environmental impact "Potential hazards"; Fourth, degradable plastics are difficult to recycle due to special additives
Although there have been related reports on the use of distiller's grains as one of the raw materials to prepare biodegradable plastics, such as Chinese patent applications with publication numbers CN 104761916A and CN108530810A, the inventors found that plastics prepared directly from distiller's grains as one of the raw materials are prone to mildew. The anti-mold performance is poor. The above-mentioned prior art can overcome the shortcomings of poor mechanical properties of distiller's grains by compounding other raw materials, but it does not solve the problem of distiller's grains mildew

Method used

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  • Photo-oxygen and biodegradable plastic containing bio-based material and preparation method thereof
  • Photo-oxygen and biodegradable plastic containing bio-based material and preparation method thereof
  • Photo-oxygen and biodegradable plastic containing bio-based material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation of embodiment 1 dried distiller's grains pretreatment

[0034] Add 3 times its weight volume fraction to fresh distiller's grains and be 75% ethanol solution, leave standstill at room temperature for 6h to carry out degreasing treatment, filter, remove filtrate, then add the NaOH solution that the mass concentration of 4 times of filter residue weight is 5%, at room temperature Soak for 24 hours for deproteinization, then wash with water until the pH is neutral, and dry until the water content is 5-10% m / m to obtain the pretreated distiller's grains.

Embodiment 2

[0035] The preparation of embodiment 2 mugwort wax

[0036] Take fresh Artemisia argyi leaves, crush them and pack them into a column, then use cyclohexane to circulate and elute the packed medicinal material column. After the liquid comes out, measure the flow rate of the effluent liquid, and after circularly eluting 5BV, connect a silica gel column for adsorption , after continuing to circulate and elute 3BV, remove the medicinal material column, empty the cyclohexane in the medicinal material column with an air pump, and load the cyclohexane into the silica gel column for adsorption; finally take another cyclohexane to wash the wax in the silica gel column After the color of the eluted eluent becomes lighter, empty the cyclohexane in the column with an air pump, merge with the eluent, and recover the cyclohexane with a rotary evaporator to obtain the mugwort wax.

Embodiment 3

[0037] The preparation of embodiment 3 bio-based composites

[0038] The bio-based composite of the present embodiment includes the components in weight percent shown in the table below:

[0039]

[0040] The dried distiller's grains in the above formula 5 is a material with a water content of 5-10% m / m obtained by direct drying of fresh distiller's grains, without degreasing and deproteinizing treatment before drying. The fresh distiller's grains are fresh distiller's grains directly recovered from breweries without any treatment.

[0041] The preparation steps of the bio-based composite of formula 1-3: blend and pulverize the dried distiller’s grain pretreatment and mugwort leaf wax to obtain a composite powder, then add epoxy soybean oil, mix well, and heat press for 5 minutes under a hot press , after cooling to 50°C, the pressure is released, and the bio-based composite is obtained.

[0042] The preparation steps of the bio-based composites of formulations 4-5 refer ...

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Abstract

The invention discloses a photo-oxygen and biodegradable plastic containing a bio-based material and a preparation method thereof. The photo-oxygen and biodegradable plastic containing the bio-based material comprises the following components in percentage by weight: 35-45% of low density polyethylene, 40-50% of a bio-based composite, 10-20% of polybutylene succinate, 0.5-0.7% of biodegradable master batches and 0.1-0.2% of a degradation accelerator. The photo-oxygen and biodegradable plastic containing the bio-based material has good photo-oxygen and biodegradability, and rapid and complete degradation in a natural environment, is green and environment-friendly, has good water resistance and mechanical properties, is easy to process and form, can be used for preparing various food packaging bags, tableware and the like, and has a wide application range.

Description

technical field [0001] The invention relates to the technical field of biomaterials, in particular to photooxygen containing bio-based materials, biodegradable plastics and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, there are more and more plastic products. However, the use of a large number of plastic products will also produce a large amount of waste that is not easy to decompose, causing "white pollution", which has brought great harm to human living environment and production. harm. For this reason, degradable plastics have always been a research hotspot. According to the degradation principle of plastics, degradable plastics are divided into four categories: photodegradable plastics, biodegradable plastics, photo / biodegradable plastics, and water-degradable plastics. Tests have shown that most degradable plastics begin to become thinner, lose weight, and lose strength after being exposed to the general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L67/02C08L91/06C08L99/00C08L91/00C08K3/22C08J3/22
Inventor 王玉廷
Owner 王玉廷
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