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Polyvinyl alcohol foaming material for treating sewage

A technology of polyvinyl alcohol and foaming materials, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc.

Inactive Publication Date: 2010-06-02
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyvinyl alcohol foam materials can be modified with carbon nanotubes

Method used

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  • Polyvinyl alcohol foaming material for treating sewage

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Non-limiting examples are described as follows:

[0022] 1, the preparation of this foam material

[0023] Dissolve polyvinyl alcohol (molecular weight 70000-80000, model PVA1788 or 1799) and polyethylene glycol (molecular weight 4000-7000, the addition amount is 8wt% of polyvinyl alcohol) in deionized water at 80°C, and the configuration concentration is 10wt %~20wt% polyvinyl alcohol aqueous solution, add starch (addition amount is 67wt% of polyvinyl alcohol) under stirring at room temperature, stir evenly, obtain white mixed liquid, then add carbon nanotubes (model 4060, Shenzhen Nanometer Port Co., Ltd. Produced by the company, the addition amount is 8wt% of polyvinyl alcohol); high-speed stirring, so that the carbon nanotubes are evenly distributed in the above mixture, and the appearance of the black mixture; then add 40wt% ~ 50wt% sulfuric acid solution and 30wt% ~ 40wt% % formaldehyde solution, stir evenly at high speed, finally add calcium carbonate powder, st...

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PUM

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Abstract

A polyvinyl alcohol foaming material for processing sewage uses polyvinyl alcohol, formaldehyde and amidon as raw materials, sulfuric acid as catalyst, calcium sulfate as foaming agent to prepare softfoam plastic, which is characterized in that the charged carbon nanometer pipe and polyethylene glycol are foamed together to make the foaming material have large-aperture porous structure, and the aperture ranges from 0.05mm to 1.0mm. The water-absorbing quantity is 4-6 times as itself weight, which is especially provided with peculiar adsorption property for adsorbing particle and stain suspended in the sewage and stripping peculiar smell and decolouration effect, further processing sewage, not only processing living sewage, but also processing industrial sewage.

Description

1. Technical field [0001] The patent of the present invention relates to a specific-purpose polyvinyl alcohol foaming material, specifically a polyvinyl alcohol foaming material for sewage treatment. 2. Background technology [0002] At present, the development of polyvinyl alcohol foaming technology at home and abroad is relatively mature. The domestic patents related to the preparation method of polyvinyl alcohol foaming materials are as follows: [0003] 1. 94102999.9, discloses a polyvinyl alcohol foaming material for medical and sanitary use and its preparation method and application, which is characterized in that glyoxal is added to the raw material and sodium bicarbonate is used as a foaming agent, and it is foamed and molded by polymerization Demoulding, washing and processing. [0004] 2, 94112557.2, discloses a kind of manufacture method of polyvinyl acetal collodion, is to add surfactant, stabilizer, foaming agent and formaldehyde in the aqueous solution of PVA ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/00C08L29/04C08L3/02C08K3/04C02F1/00
Inventor 毕红贾莉莉
Owner ANHUI UNIVERSITY
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