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Preparation method and application of macromolecular degradable master batch

A technology for degrading masterbatches and polymers, applied in the field of composite material production, can solve problems such as uncontrollable, accelerated molecular degradation, disordered molecular fragments, etc.

Active Publication Date: 2021-09-07
上海瞬吾商务咨询中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009]At present, the degradation of polymers mainly includes aerobic degradation, photodegradation, anaerobic degradation, etc., while the conventional degradation process mainly breaks polymer chains into small molecules Fragments, and the broken molecular fragments are disordered and uncontrollable; the existing biodegradation process is often through the interaction of microbial enzymes, and the degradation of enzymes is used to accelerate the degradation of molecules

Method used

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  • Preparation method and application of macromolecular degradable master batch
  • Preparation method and application of macromolecular degradable master batch
  • Preparation method and application of macromolecular degradable master batch

Examples

Experimental program
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Embodiment 1

[0037]A polymer degradable masterbatch has a melt index of 3g / min (2.16kg, 190°C) and a melting range of 90°C; the degradable masterbatch has an aerobic degradation time t1 at 60°C and an anaerobic degradation time at 60°C The ratio t1 / t2 of t2 is 5, and the total content of metal ions with an atomic number greater than 30 in the degradable masterbatch is less than 100 ppm.

[0038] A kind of preparation method of macromolecule degradable masterbatch, its concrete steps are:

[0039] Its main components and content of described macromolecule degradable masterbatch are as follows:

[0040]

[0041] The preparation method of described macromolecule degradable master batch comprises the following:

[0042] (1) Preparation of modified polyglycolic acid

[0043] Glycolic acid is used as raw material and a titanium-based modified catalyst is used. First, the glycolic acid is esterified at 190-210 ° C. During the esterification process, nitrogen is used as a protective gas and t...

Embodiment 2

[0056] A polymer degradable masterbatch has a melt index of 30g / min (2.16kg, 190°C) and a melting range of 165°C; the aerobic degradation time t1 of the degradable masterbatch at 60°C and the anaerobic degradation time of 60°C The ratio t1 / t2 of t2 is 10, and the total content of metal ions with an atomic number greater than 30 in the degradable masterbatch is less than 100 ppm.

[0057] A kind of preparation method of macromolecule degradable masterbatch, its concrete steps are:

[0058] Its main components and content of described macromolecule degradable masterbatch are as follows:

[0059]

[0060] The preparation method of described macromolecule degradable master batch comprises the following:

[0061] (1) Preparation of modified polyglycolic acid

[0062] Glycolic acid is used as raw material and a titanium-based modified catalyst is used. First, the glycolic acid is esterified at 190-210 ° C. During the esterification process, nitrogen is used as a protective gas ...

Embodiment 3

[0075] A polymer degradable masterbatch has a melt index of 20g / min (2.16kg, 190°C) and a melting range of 135°C; the aerobic degradation time t1 of the degradable masterbatch at 60°C and the anaerobic degradation time of 60°C The ratio t1 / t2 of t2 is 8, and the total content of metal ions with an atomic number greater than 30 in the degradable masterbatch is less than 100 ppm.

[0076] A kind of preparation method of macromolecule degradable masterbatch, its concrete steps are:

[0077] Its main components and content of described macromolecule degradable masterbatch are as follows:

[0078]

[0079]

[0080] The preparation method of described macromolecule degradable master batch comprises the following:

[0081] (1) Preparation of modified polyglycolic acid

[0082] Glycolic acid is used as raw material and a titanium-based modified catalyst is used. First, the glycolic acid is esterified at 190-210 ° C. During the esterification process, nitrogen is used as a prot...

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Abstract

The invention relates to a preparation method and application of a macromolecular degradable master batch. The ratio t1 / t2 of aerobic degradation time t1 at 60 DEG C to anaerobic degradation time t2 at 60 DEG C of the degradable master batch is 5-10, and the total content of metal ions with atomic numbers greater than 30 in the degradable master batch is less than 100 ppm. The macromolecular degradable master batch disclosed by the invention has strong processing adaptability and high biodegradation activity, and can assist the starting degradation of polyolefin, polyester and polyamide, improve the biodegradation rate of the polyolefin, polyester and polyamide, and meet the requirements of biodegradation.

Description

technical field [0001] The invention relates to the technical field of composite material production, in particular to a preparation method and application of a polymer degradable masterbatch. Background technique [0002] Plastic is a safe, durable and low-cost product that is widely used in our daily life, in industries such as daily necessities, packaging, and construction. The use of general-purpose plastics such as PE and PP, synthetic fibers such as PA, and synthetic polyesters such as PBT and PET facilitates people's material life, and the waste that can be generated cannot be decomposed under natural conditions, resulting in serious environmental pollution. [0003] In view of the above problems, seeking environment-friendly materials has become a common goal of many researchers. Therefore, biodegradable polymer materials such as PBAT and PGA have become a research hotspot. [0004] For example, PBAT has good molecular flexibility and biodegradability, and is curre...

Claims

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Application Information

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IPC IPC(8): C08J3/22C08L67/04C08L67/02C08L71/02C08L89/00C08K5/098C08L23/00C08L67/00C08L77/00B29C48/92B29B9/06
CPCC08J3/226B29C48/92B29B9/06C08J2467/04C08J2467/02C08K5/098C08K2201/018C08J2471/02C08J2489/00C08J2323/00C08J2367/00C08J2377/00
Inventor 江振林朱敏陈晨任皖挺
Owner 上海瞬吾商务咨询中心
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