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Biodegradable foaming material and preparation method thereof

A technology of biodegradable and foamed materials, applied in the field of biodegradable foamed materials and their preparation, can solve the problem of lack of carrier materials

Active Publication Date: 2018-12-28
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a biodegradable foaming material and a preparation method thereof, so as to solve the problem in the prior art that there is no carrier material that is stable, can provide a larger living environment for microorganisms, and can be used for water pollution treatment

Method used

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  • Biodegradable foaming material and preparation method thereof
  • Biodegradable foaming material and preparation method thereof
  • Biodegradable foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0092] According to the raw materials and weight ratio shown in Table 1, the biodegradable foaming material of the present invention was prepared by referring to the following steps.

[0093] 1. Blend biodegradable polymer A, biodegradable polymer B, co-crosslinking agent, foaming agent, pro-foaming agent and nucleating agent according to their weight parts at 160°C for 50s.

[0094] 2. Then add the cross-linking agent in corresponding parts by weight, and continue to blend at 160°C for 190s to obtain a billet.

[0095] 3. Put the blank into the molding machine for molding. The process conditions are controlled as follows: 195°C, 8min, 5MPa. After 2 minutes of mold opening (mold opening and foaming), the sample was quickly put into room temperature water for quenching to obtain a biodegradable foam material with a thickness of 8mm.

[0096] 4. Put the dried biodegradable foaming material in the aluminum hydroxide colloidal solution for 6 hours, rinse it with running water, a...

Embodiment 6～32、34～37

[0098] According to the raw materials and weight ratio shown in Table 1, the biodegradable foaming material of the present invention was prepared by referring to the following steps.

[0099] 1. Blend biodegradable polymer A, biodegradable polymer B, co-crosslinking agent, foaming agent, pro-foaming agent and nucleating agent according to their weight parts at 160°C for 50s.

[0100] 2. Then add the cross-linking agent in corresponding parts by weight, and continue to blend at 160°C for 190s to obtain a billet.

[0101] 3. Put the blank into the molding machine for molding. The process conditions are controlled as follows: 195°C, 8min, 5MPa. After 2 minutes of mold opening (mold opening and foaming), the sample was quickly put into room temperature water for quenching to obtain a biodegradable foam material with a thickness of 8 mm.

[0102] 4. Put the dried biodegradable foaming material in the colloidal solution of ferroferric oxide for 6 hours, rinse it with flowing water...

Embodiment 5

[0104] According to the raw materials and weight ratio shown in Table 1, the biodegradable foaming material of the present invention was prepared by referring to the following steps.

[0105] 1. Blend biodegradable polymer A, biodegradable polymer B, co-crosslinking agent, foaming agent, pro-foaming agent and nucleating agent according to their weight parts at 160°C for 50s.

[0106] 2. Then add the cross-linking agent in corresponding parts by weight, and continue to blend at 160°C for 190s to obtain a billet.

[0107] 3. Put the blank into the molding machine for molding. The process conditions are controlled as follows: 195°C, 8min, 5MPa. After the mold is closed and foamed, the sample is rapidly cooled in water at room temperature to obtain a biodegradable foamed material with a thickness of 8 mm.

[0108] 4. Put the dried biodegradable foaming material in the colloidal solution of ferroferric oxide for 6 hours, rinse it with flowing water, and then dry it at 60° C. to o...

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Abstract

The invention provides a biodegradable foaming material and a preparation method thereof. The biodegradable foaming material is prepared from, by weight, 100 parts of biodegradable polymer A and a10-40 parts of biodegradable polymer B, the opening percentage of the foaming material is 50%-90%, and the specific surface area is 100-900 m<2> / g. The preparation method of the biodegradable foaming material is simple, and the biodegradable foaming material is stable in structure, high in porosity, large in specific surface area, high in mechanical strength and good in impact resistance property andcan serve as a carrier for water treatment. In addition, the biodegradable foaming material provides a solid carbon source for microbes, especially for denitrifying bacteria, the growth and nitrogen removal effects of the denitrifying bacteria are improved, and meanwhile secondary pollution due to increase of the organic content in water is not caused.

Description

technical field [0001] The invention belongs to the field of polymer materials, and more specifically relates to a biodegradable foaming material and a preparation method thereof. Background technique [0002] In recent years, with the acceleration of industrialization and the increase and expansion of the population and the scope of population activities, human demand for water resources is increasing; on the other hand, industrialization and human activities will cause serious pollution to scarce water resources, so , how to effectively control water pollution has become an important issue in the 21st century. [0003] Wastewater treatment technology can be divided into physical method, chemical method and biological method according to its principle of action. The physical method is to use physical action to separate the pollutants that are mainly in the state of suspended solids in the wastewater; the chemical method is to use chemical reactions to separate and recover ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/10C08J9/40C08L67/04C08K3/34C08K3/36C08K3/38C08K3/26C02F3/34C02F101/16
CPCC02F3/34C02F2101/16C08J9/103C08J9/105C08J9/107C08J9/40C08J2367/04C08J2467/04C08K3/34C08K3/36C08K3/38C08K2003/265
Inventor 蔡奇胜陆冲李勇锋景盛翱张俊超马雪华
Owner EAST CHINA UNIV OF SCI & TECH
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