A kind of graphene in-situ polymerization biodegradable copolyester and its preparation method and application

A technology of biodegradation and in-situ polymerization, which is applied in the direction of chemical/physical/physicochemical processes of applied energy, can solve problems such as unsuitable biodegradation fields, and achieve adjustable biodegradation time, narrow molecular weight distribution, and better physical properties. good effect

Active Publication Date: 2022-04-08
山东阜坤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent is mainly aimed at non-degradable polyester fibers, which have certain application value in the textile field. This material is indeed not suitable for the biodegradation field of other materials.

Method used

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  • A kind of graphene in-situ polymerization biodegradable copolyester and its preparation method and application
  • A kind of graphene in-situ polymerization biodegradable copolyester and its preparation method and application
  • A kind of graphene in-situ polymerization biodegradable copolyester and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment discloses a tray type continuous esterification reactor, such as Figure 1-2 As shown, it includes a reactor body 1, a material inlet 2, a material outlet 3, a tray 4 and an ultrasonic dispersion part, wherein the material inlet 2 is arranged at the upper end of the side wall of the reactor body 1; the material outlet 3 is arranged at the reactor body 1 The lower end of the gas phase outlet 8 is arranged on the upper end of the reactor body 1, and the tray 4 is arranged in the inner cavity of the reactor body 1, and the cross section of the tray 4 is arranged in an inverted V shape; the ultrasonic dispersion part includes an ultrasonic dispersion probe 5, A number of ultrasonic dispersion probes 5 are arranged on the inner wall of the reactor body 1, and the ultrasonic dispersion probes 5 are arranged in cooperation with the tray 4 so that the material entering from the material inlet 2 falls on the center directly above the tray 4, and the material flows...

Embodiment 2

[0036] Embodiment 2: a kind of preparation method of graphene in-situ polymerization biodegradable copolyester:

[0037] S1. Graphene dispersion: add graphene to an appropriate amount of diol, and apply a high-speed stirrer and an ultrasonic disperser to perform pre-dispersion treatment at the same time to obtain a graphene dispersion liquid. The graphene content in the graphene dispersion liquid is 4-8wt %.

[0038] S2. Auxiliary configuration: Add catalysts, antioxidants, stabilizers, lubricants and other auxiliaries to an appropriate amount of glycol, and perform pre-dispersion treatment with a high-speed agitator to obtain an auxiliary agent dispersion. The additive content is 5-10wt%.

[0039] S3. Beating: Add two kinds of dibasic acids and one kind of dibasic alcohol in a certain ratio into the beating kettle, maintain the temperature of the beating kettle at 65-75°C, stirrer speed at 100-120r / min, beating for 1 hour, and then add the step (a) and the graphene dispersi...

Embodiment 3

[0047] Example 3: Characterization

[0048] This embodiment tests the graphene in situ polymerization biodegradable copolyester obtained in Example 1, wherein the test method is as follows:

[0049] 1. Biodegradation rate, the test method is: GB / T 20197-2013

[0050] 2. Surface resistance value, the test method is: GB / T 1410-2006

[0051] 3. Antibacterial performance, the test method is: QB / T 2591-2003

[0052] 4. Water vapor transmission rate, the test method is: GB / T 1037-1988

[0053] 5. Tensile strength, the test method is: GB / T 1040-2006

[0054] 6. Elongation at break, the test method is: GB / T 1040-2006

[0055] Table 1 Performance test results of graphene in situ polymerization biodegradable copolyester

[0056]

[0057] According to the data in Table 1 above, it can be seen that the biodegradation rate of the graphene in-situ polymerization biodegradable copolyester obtained in this application can reach more than 95%, and it has good electrical conductivity, s...

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Abstract

The application provides a graphene in-situ polymerization biodegradable copolyester and its preparation method and application, wherein, the graphene in-situ polymerization biodegradable copolyester of the present invention introduces graphite during the polymerization process of the biodegradable polyester material The graphene component, through the multi-level grid structure of graphene, makes the macromolecules of the biodegradable polyester material evenly distributed, the molecular weight distribution is narrower, and due to the regularity of the molecular structure, it shows many new properties that were not originally available. Such as barrier properties, antibacterial properties, electrical conductivity, etc.

Description

technical field [0001] The application belongs to the field of biodegradable materials, and in particular relates to a graphene in-situ polymerization biodegradable copolyester and its preparation method and application. Background technique [0002] Plastic has brought great convenience to people's life, but after a large number of plastic products are used and discarded, the environmental problems caused by improper disposal have become a hot spot of global concern. With the promulgation of my country's policy of prohibiting the import of waste plastic waste, it has gradually become a social consensus to strengthen waste classification, waste plastic recycling and biochemical treatment of organic waste, and biodegradable plastics have also received attention because they help biochemical treatment of composting. Countries around the world have introduced restrictions on disposable products that are difficult to recycle and easily polluted, and promote the application of bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183C08G63/16C08G63/78C08K3/04C08G83/00B01J19/10
CPCC08G63/183C08G63/16C08G63/78C08K3/042C08G83/001B01J19/10
Inventor 冯爱华
Owner 山东阜坤新材料有限公司
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