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Composite packaging material prepared by utilizing municipal sludge and preparation method thereof

A composite packaging material and municipal sludge technology, applied in the field of sludge environmental protection treatment, can solve the problems of limited urban sludge resource utilization, unfavorable urban sludge promotion and utilization, health hazards, etc., to achieve good foaming effect, The effect of simple preparation process and convenient use

Inactive Publication Date: 2019-01-11
SICHUAN COLLEGE OF ARCHITECTURAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in view of the fact that there is currently no perfect plan for preparing packaging cardboard from urban sludge, the packaging cardboard produced by utilizing urban sludge will bring health hazards to users, resulting in a limited range of resource utilization of urban sludge. Technical problems that are not conducive to the popularization and utilization of urban sludge resources, provide a composite packaging material prepared from urban sludge and its preparation method

Method used

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  • Composite packaging material prepared by utilizing municipal sludge and preparation method thereof
  • Composite packaging material prepared by utilizing municipal sludge and preparation method thereof
  • Composite packaging material prepared by utilizing municipal sludge and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] Such as Figure 1-3 As shown, a composite packaging material prepared from municipal sludge includes foaming slurry prepared by mixing and stirring sludge powder, fiber slurry and foaming agent, and the sludge powder is passed through municipal sludge It is produced through physical and chemical treatment for decomposing organic matter, and the content of organic matter in the sludge powder is less than 10%.

[0036] In the composite packaging material prepared by using municipal sludge in this embodiment, the physical and chemical treatment for decomposing organic matter is preferably wet oxidation treatment, and the fiber slurry includes plant fibers made from agricultural straw, so that at the same time it is Municipal sludge and agricultural straw provide an economical and environmentally friendly way of resource utilization, making full use of cellulose, silicon oxide and various metal oxides in municipal sludge, combined with cellulose in plant fibers and protein ...

Embodiment 2

[0040] Such as Figure 1-3 As shown, a composite packaging material prepared from municipal sludge in this embodiment has the same raw material composition as that in Embodiment 1, except that the foaming agent includes protein liquid obtained from animal hair through protein extraction.

[0041] A composite packaging material prepared from urban sludge in this embodiment uses animal hair as a raw material for preparing a foaming agent, and uses animal hair to prepare protein liquid as a foaming agent, which not only has a good foaming effect, but also has a good The foam stabilizing effect further makes the raw materials environmentally friendly, has a wide range of sources, and is low in cost. The composite packaging material produced is light in material, has good thermal insulation effect, and provides a better resource utilization method for animal hair. This implementation For example, the animal hair is preferably poultry feathers, forming an environmentally friendly co...

Embodiment 3

[0043] Such as Figure 1-3 As shown, a composite packaging material prepared from municipal sludge in this embodiment has the same raw material composition as in Example 1, the difference is that it also includes a material modifier. In this embodiment, it is preferred that the material modifier includes thermoplastics and stabilizers. foaming agent.

[0044] In this embodiment, a composite packaging material prepared from municipal sludge, by adding thermoplastics to the foamed slurry, the composite packaging material can not only achieve the packaging effect of ordinary cardboard packaging materials, but also have the characteristics of plastic boards. characteristics, so that the prepared composite packaging material has excellent performances of waterproof, moisture resistance, insect resistance, and antibacterial, and the surface roughness is smaller. At the same time, adding a foam stabilizer to the foaming slurry is beneficial to make the foaming slurry The number of b...

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Abstract

The invention relates to the field of environmental protection treatment of sludge, and in particular to a composite packaging material prepared by utilizing municipal sludge and a preparation methodthereof. The composite packaging material contains foamed slurry obtained by mixing and stirring sludge powder, fiber slurry and a foaming agent, wherein the sludge powder is obtained by carrying outphysicochemical treatment for decomposing organic matters on the municipal sludge; and the content of the organic matters in the sludge powder is less than 10%. By fully utilizing cellulose, silicon oxide and various metal oxides in the municipal sludge subjected to the physicochemical treatment for decomposing the organic matters, the obtained composite packaging material has better fire and insect bite preventing properties relative to an ordinary packaging paperboard; microorganisms and the organic matters in the material are decomposed and bacterial virus is eliminated to ensure that the material is not easily affected by external acid and alkali environments and is stable in performance and wide in application range; and the foaming agent is added and the number of bubbles in the obtained material is increased to ensure that the material has better heat insulation effect, high and low temperature resistance and moisture resistance and is wider in the application range.

Description

technical field [0001] The invention relates to the field of sludge environmental protection treatment, in particular to a composite packaging material prepared from municipal sludge and a preparation method thereof. Background technique [0002] With the increasing population and the increasing urbanization of the global society, the output of urban domestic sewage is increasing, and the sludge as a by-product of urban sewage treatment is also increasing. Urban sludge contains a large number of microorganisms, humus and Cellulose, its organic matter content is generally higher than 50%. There are generally two ways to recycle the existing municipal sludge. One is to dry the sludge at low temperature and then use landfill, incineration or pyrolysis carbonization. One way is to recover energy through gas production, and the other is to carry out composting, fermentation, thermal hydrolysis and other treatments in the form of wet sludge. The treated sludge is mainly used for l...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L1/02C08K3/34C08K3/22C08K11/00C08J9/04
CPCC08J9/0004C08J9/0061C08J9/04C08J2397/02C08J2401/02C08J2497/02C08K3/22C08K3/34C08K11/005
Inventor 胡敏彭丽颜子博郭娜
Owner SICHUAN COLLEGE OF ARCHITECTURAL TECH
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