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Preparation method for flame-retardant foaming agent by utilizing waste bones

A foaming agent and bone technology, applied in the field of flame retardant materials, can solve the problems of non-purifying air, polluting the environment, generating smoke, etc., and achieving the effects of low cost and simple preparation steps

Inactive Publication Date: 2016-01-06
JIANGSU JINYU ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: Aiming at the fact that the existing flame retardant foaming agent will produce smoke during use, is toxic, pollutes the environment, and has no function of purifying the air at the same time, it provides a flame retardant foaming agent prepared by using waste bones The method, the method first removes the protein in the bone from the discarded bone, dissolves it with acid, then adds sodium hydroxide, carbon dioxide and sodium polyphosphate to prepare the raw material of the flame retardant foaming agent, and finally mixes it with high viscosity Attapulgite clay powder and other substances can be mixed. The flame-retardant foaming agent prepared by this method is smoke-free, non-toxic, halogen-free and can make full use of waste, turning waste into treasure, and more importantly, it can purify the air

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] First take the discarded bones, remove the residual meat on the surface, and wash the surface with water, then put it into the calciner for 70 minutes, set the temperature at 900°C, then take it out and cool it to room temperature, and put it into a mill for grinding into 150 mesh powder; put the powder into a container, add 40% hydrochloric acid solution to submerge 5cm of the powder, add 50% hydrogen peroxide, the amount is 20% of the volume of the hydrochloric acid solution, and Add pepsin to it in an amount of 15% of the powder mass, stir for 50 minutes, set the temperature at 35°C, and then filter; put the obtained filtrate into a container, and add sodium hydroxide with a mass fraction of 80% to it Solution, when no precipitate is produced, stop adding sodium hydroxide solution, stir evenly, pass carbon dioxide into it, make the pH value of the turbid solution reach 7.0 in 60 minutes, and add 0.5% powder mass to it while passing carbon dioxide Sodium polyphosphate...

example 2

[0021] First take the discarded bones, remove the residual meat on the surface, and wash the surface with water, then put it in the calciner for 50 minutes, set the temperature at 800°C, then take it out and cool it to room temperature, and put it into a mill for grinding into a 150 mesh powder; the powder is put into a container, and the hydrochloric acid solution with a mass fraction of 40% is added to submerge the powder for 4 cm, and the hydrogen peroxide with a mass fraction of 50% is added thereto, the amount of which is 15% of the volume of the hydrochloric acid solution, and then Add pepsin to it in an amount of 10% of the mass of the powder, stir for 40 minutes, set the temperature at 30°C, and then filter; put the obtained filtrate into a container, and add sodium hydroxide with a mass fraction of 80% to it Solution, when no precipitate is produced, stop adding sodium hydroxide solution, stir evenly, pass carbon dioxide into it, make the pH value of the turbid solutio...

example 3

[0023]First take the discarded bones, remove the residual meat on the surface, and wash the surface with water, then put it into the calciner for 60 minutes, the temperature is set at 850°C, then take it out and cool it to room temperature, and put it into a mill for grinding into 130 mesh powder; the powder is put into a container, and the hydrochloric acid solution of 40% mass fraction is added therein to submerge the powder 4cm, and the hydrogen peroxide of 50% mass fraction is added thereto, and its addition is 17% of the hydrochloric acid solution volume, and then Add pepsin to it in an amount of 12% of the mass of the powder, stir for 35 minutes, set the temperature at 32°C, and then filter; put the obtained filtrate into a container, and add sodium hydroxide with a mass fraction of 80% to it Solution, when no precipitate is produced, stop adding sodium hydroxide solution, stir evenly, pass carbon dioxide into it, make the pH value of the turbid solution reach 6.7 in 55mi...

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PUM

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Abstract

The invention relates to a preparation method for a flame-retardant foaming agent by utilizing waste bones, belonging to the field of flame-retardant materials. The method comprises the following steps: firstly removing residual meat on the surfaces of the waste bones and carrying out washing and cleaning, then placing the waste bones into a calcining furnace and carrying out calcination, then carrying out taking out and cooling to room temperature, and carrying out grinding into powder; then submerging the powder with a hydrochloric acid solution and adding hydrogen peroxide and pepsin, and carrying out stirring and filtering; then adding a sodium hydroxide solution into obtained filtrate, when no sediment is generated, stopping adding, carrying out uniform stirring, introducing carbon dioxide into the obtained solution, and adding sodium polyphosphate at the same time; carrying out aging, after aging is completed, adding lauric acid and secondary alkane sulphonate, carrying out stirring, heating and filtering, and drying obtained filtered matters; and finally, taking the substances like the filtered matters and high-viscosity attapulgite clay powder, and carrying out uniform mixing and stirring so as to obtain the flame-retardant foaming agent. The invention has the following beneficial effects: the use of the flame-retardant foaming agent is free of smoke, toxicity and halogen; the waste bones are fully utilized, so wastes are turned into treasures, and the environment is protected; and simple preparation steps and low cost are obtained.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant foaming agent by utilizing waste bones, and belongs to the field of flame-retardant materials. Background technique [0002] With the increasing awareness of global safety and environmental protection, people have higher and higher requirements for fire safety and flame retardancy of products. Halogen-free, low-smoke, low-toxic environment-friendly flame retardants have become the goal pursued by people. [0003] Flame retardants currently mainly include organic and inorganic, halogen and non-halogen. Organic is some flame retardants represented by bromine, phosphorus nitrogen, nitrogen and red phosphorus and compounds, and inorganic is mainly antimony trioxide, magnesium hydroxide, aluminum hydroxide, silicon and other flame retardant systems. Foaming agents can be divided into three categories: chemical foaming agents, physical foaming agents and surfactants. Foaming agents with more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02
Inventor 李锦宇薛红娟宋国
Owner JIANGSU JINYU ENVIRONMENTAL ENG