CN105396564A - Formaldehyde adsorbent and preparation method thereof - Google Patents
Formaldehyde adsorbent and preparation method thereof Download PDFInfo
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- CN105396564A CN105396564A CN201510973003.8A CN201510973003A CN105396564A CN 105396564 A CN105396564 A CN 105396564A CN 201510973003 A CN201510973003 A CN 201510973003A CN 105396564 A CN105396564 A CN 105396564A
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- B01D53/34—Chemical or biological purification of waste gases
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Abstract
A formaldehyde adsorbent comprises the following components by mass: 88.5-99.9% of an adsorbent support, 0.1-12% of a high-molecular polymer with a side chain containing an active methylene and 0.01-0.1% of a catalyst. The adsorbent support loaded with the high-molecular polymer with the side chain containing the active methylene is used for combination of physical adsorption and chemical reaction of formaldehyde. After the free formaldehyde in the air is adsorbed by the adsorbent support, condensation reaction of the formaldehyde and the loaded high-molecular polymer with the side chain containing the active methylene can be performed under the effect of the catalyst, and the free formaldehyde finally is converted into non-toxic and harmless substances. The formaldehyde adsorbent is significant in adsorption effect, long in service time, convenient in preparation, and suitable for promote and use.
Description
Technical field
The present invention relates to formaldehyde removing field, particularly a kind of formaldehyde adsorbent and preparation method thereof.
Background technology
The impact of formaldehyde on health is mainly manifested in the aspects such as allotriosmia, stimulation, allergy, abnormal pulmonary function, dysfunction of liver and immunologic dysfunction.Long Term Contact low concentration formaldehyde can cause chronic respiratory disease, degradation under nasopharyngeal carcinoma, colon cancer, the cancer of the brain, paramenia, nuclear gene mutation, pregnancy syndrome, leukaemia, memory and intelligence.In all contactees, children, pregnant woman and old man's PARA FORMALDEHYDE PRILLS(91,95) are particularly responsive, endanger also larger.International cancer research organization has advised it can be used as suspect carcinogen to treat.
In life, formaldehyde derives from decoration, finishing material, furniture and coating etc. usually, especially be very with the adhesive of artificial board and use thereof, artificial board comprises face artificial board, glued board, particieboard, fiberboard, composite floor board etc., they use phenolic aldehyde containing formaldehyde and Lauxite in process of production, according to statistics display, domestic artificial board more than 90% adopts urea-formaldehyde glue to suppress, thus no doubt can produce free formaldehyde when applying, being applied in Furniture manufacture or the application of other sheet material and often certain impact being produced on human body.In actual application, the generation of free formaldehyde comprises following reason:
(1) insufficient and remaining free formaldehyde is reacted during resins synthesis;
(2) resins synthesis participates in reaction formaldehyde, owing to defining unstable group, heat press greatly with hard board use procedure in discharge again the formaldehyde combined;
(3) in board making process, owing to adding solid agent, under electrolytical effect, around resin micelle, the absorption ion layer of established tool stability is destroyed, thus discharges formaldehyde and cause hardening of resin.
At present, the object by using formaldehyde adsorbent to reach removing free formaldehyde on market.In actual use, the volatilizes of free formaldehyde generally can continue 10 ~ 15 years, formaldehyde adsorbent of the prior art, the active ingredient added is limited, once after effect inefficacy, the free formaldehyde in wood-based plate still can discharge out in a large number, cause the pollution of room air, in addition, when formaldehyde scavenger and formaldehyde generation incomplete reaction, also may generate other noxious materials and cause secondary pollution.
Summary of the invention
For solving above-mentioned Problems existing, the object of the present invention is to provide a kind of formaldehyde adsorbent and preparation method.
For achieving the above object, technical scheme of the present invention is:
A kind of formaldehyde adsorbent, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 88.5-99.9%, and side chain contains active methylene group high molecular polymer: 0.1-12%, catalyst: 0.01-0.1%.
Further, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 92.8%, containing active methylene group high molecular polymer: 7.17%, and catalyst: 0.03%.
Again, described side chain contains high molecular polymer saturated carbon atom that active methylene group high molecular polymer is side chain being connected with nitro or cyano group or ester group or phenyl.
And have, the molecular weight that described side chain contains active methylene group high molecular polymer is 5000 ~ 10000g/mol.
Separately, described adsorbing agent carrier is the one in active carbon or attapulgite clay or diatomite or CNT.
A preparation method for formaldehyde adsorbent, comprises the steps:
(1) side chain is contained active methylene group high molecular polymer and be dissolved in organic solvent, add deionized water dilution, and add catalyst and stir and obtain mixed liquor;
(2) adsorbing agent carrier carries out drying in thermostatic drying chamber, puts into above-mentioned mixed liquor after drying, soaks 4-6h and takes out;
(3) adsorbing agent carrier after immersion is placed in vacuum drying chamber, 25-40 DEG C is carried out dried overnight, obtains formaldehyde adsorbent.
Meanwhile, described organic solvent is the one in ethanol or ethylene glycol or ether or oxolane or acetone or dioxane.
Beneficial effect of the present invention is:
(1) formaldehyde adsorbent of the present invention utilizes load to have the adsorbing agent carrier that side chain contains active methylene group high molecular polymer the physical absorption of formaldehyde and chemical reaction to be combined.After air Free-formaldehyde adsorbs by adsorbing agent carrier, can contain active methylene group high molecular polymer generation condensation reaction with the side chain of its load, free formaldehyde is converted into nontoxic, harmless material the most at last.Described formaldehyde adsorbent adsorption effect is remarkable, and service time is long, easy to prepare simultaneously, is suitable for promoting the use of;
(2) formaldehyde adsorbent of the present invention is also containing catalyst, can promote the carrying out of condensation reaction, to improve the elimination factor of free formaldehyde.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, further describe below in conjunction with embodiment.
Embodiment 1
A kind of formaldehyde adsorbent, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 92.8%, containing active methylene group high molecular polymer: 7.17%, catalyst: 0.03%; Described side chain contains high molecular polymer saturated carbon atom that active methylene group high molecular polymer is side chain being connected with nitro, and the molecular weight of described polymer is 8000g/mol; Described adsorbing agent carrier is active carbon.
A preparation method for formaldehyde adsorbent, comprises the steps:
(1) side chain is contained active methylene group high molecular polymer and be dissolved in ethylene glycol, add deionized water dilution, and add catalyst and stir and obtain mixed liquor;
(2) adsorbing agent carrier carries out drying in thermostatic drying chamber, puts into above-mentioned mixed liquor after drying, soaks 4h and takes out;
(3) adsorbing agent carrier after immersion is placed in vacuum drying chamber, 30 DEG C are carried out dried overnight, obtain formaldehyde adsorbent.
The formaldehyde adsorbent product that the present embodiment obtains is detected, first, the evaporating dish of the formalin filling 50mL, 65mg/mL is put in drier, volatilize after 6h under room temperature, take out evaporating dish in drier, then put into the beaker filling 3g formaldehyde adsorbent product He fill 50mL deionized water, with the concentration of formaldehyde in acetylacetone,2,4-pentanedione spectrophotometry deionized water after 24h, and calculate clearance, the present embodiment obtains the formaldehyde clearance of formaldehyde adsorbent is as calculated 97.7%
Embodiment 2
A kind of formaldehyde adsorbent, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 89.5%, containing active methylene group high molecular polymer: 10.4%, catalyst: 0.1%; Described side chain contains high molecular polymer saturated carbon atom that active methylene group high molecular polymer is side chain being connected with cyano group, and the molecular weight of described polymer is 5000g/mol; Described adsorbing agent carrier is diatomite.
A preparation method for formaldehyde adsorbent, comprises the steps:
(1) side chain is contained active methylene group high molecular polymer and be dissolved in oxolane, add deionized water dilution, and add catalyst and stir and obtain mixed liquor;
(2) adsorbing agent carrier carries out drying in thermostatic drying chamber, puts into above-mentioned mixed liquor after drying, soaks 5h and takes out;
(3) adsorbing agent carrier after immersion is placed in vacuum drying chamber, 40 DEG C are carried out dried overnight, obtain formaldehyde adsorbent.
The formaldehyde adsorbent product that the present embodiment obtains is detected, first, the evaporating dish of the formalin filling 50mL, 65mg/mL is put in drier, volatilize after 6h under room temperature, take out evaporating dish in drier, then put into the beaker filling 3g formaldehyde adsorbent product He fill 50mL deionized water, with the concentration of formaldehyde in acetylacetone,2,4-pentanedione spectrophotometry deionized water after 24h, and calculate clearance, the present embodiment obtains the formaldehyde clearance of formaldehyde adsorbent is as calculated 96.2%
Embodiment 3
A kind of formaldehyde adsorbent, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 95.0%, containing active methylene group high molecular polymer: 4.92%, catalyst: 0.08%; Described side chain contains high molecular polymer saturated carbon atom that active methylene group high molecular polymer is side chain being connected with ester group, and the molecular weight of described polymer is 7000g/mol; Described adsorbing agent carrier is CNT.
A preparation method for formaldehyde adsorbent, comprises the steps:
(1) side chain is contained active methylene group high molecular polymer and be dissolved in acetone, add deionized water dilution, and add catalyst and stir and obtain mixed liquor;
(2) adsorbing agent carrier carries out drying in thermostatic drying chamber, puts into above-mentioned mixed liquor after drying, soaks 6h and takes out;
(3) adsorbing agent carrier after immersion is placed in vacuum drying chamber, 35 DEG C are carried out dried overnight, obtain formaldehyde adsorbent.
The formaldehyde adsorbent product that the present embodiment obtains is detected, first, the evaporating dish of the formalin filling 50mL, 65mg/mL is put in drier, volatilize after 6h under room temperature, take out evaporating dish in drier, then put into the beaker filling 3g formaldehyde adsorbent product He fill 50mL deionized water, with the concentration of formaldehyde in acetylacetone,2,4-pentanedione spectrophotometry deionized water after 24h, and calculate clearance, the present embodiment obtains the formaldehyde clearance of formaldehyde adsorbent is as calculated 96.8%
Embodiment 4
A kind of formaldehyde adsorbent, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 99.8%, containing active methylene group high molecular polymer: 0.19%, catalyst: 0.01%; Described side chain contains high molecular polymer saturated carbon atom that active methylene group high molecular polymer is side chain being connected with phenyl, and the molecular weight of described polymer is 10000g/mol; Described adsorbing agent carrier is attapulgite clay.
A preparation method for formaldehyde adsorbent, comprises the steps:
(1) side chain is contained active methylene group high molecular polymer and be dissolved in ethanol, add deionized water dilution, and add catalyst and stir and obtain mixed liquor;
(2) adsorbing agent carrier carries out drying in thermostatic drying chamber, puts into above-mentioned mixed liquor after drying, soaks 5h and takes out;
(3) adsorbing agent carrier after immersion is placed in vacuum drying chamber, 25 DEG C are carried out dried overnight, obtain formaldehyde adsorbent.
The formaldehyde adsorbent product that the present embodiment obtains is detected, first, the evaporating dish of the formalin filling 50mL, 65mg/mL is put in drier, volatilize after 6h under room temperature, take out evaporating dish in drier, then put into the beaker filling 3g formaldehyde adsorbent product He fill 50mL deionized water, with the concentration of formaldehyde in acetylacetone,2,4-pentanedione spectrophotometry deionized water after 24h, and calculate clearance, the present embodiment obtains the formaldehyde clearance of formaldehyde adsorbent is as calculated 95.4%
It should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to the technical scheme of invention or equivalent replacement, and not depart from the scope of technical solution of the present invention, it all should be encompassed in right of the present invention.
Claims (7)
1. a formaldehyde adsorbent, is characterized in that, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 88.5-99.9%, and side chain contains active methylene group high molecular polymer: 0.1-12%, catalyst: 0.01-0.1%.
2. a kind of formaldehyde adsorbent according to claim 1, is characterized in that, described formaldehyde adsorbent is made up of by shown mass fraction following component: adsorbing agent carrier: 92.8%, containing active methylene group high molecular polymer: 7.17%, and catalyst: 0.03%.
3. a kind of formaldehyde adsorbent according to claim 1, is characterized in that, described side chain contains high molecular polymer saturated carbon atom that active methylene group high molecular polymer is side chain being connected with nitro or cyano group or ester group or phenyl.
4. a kind of formaldehyde adsorbent according to claim 3, is characterized in that, the molecular weight that described side chain contains active methylene group high molecular polymer is 5000 ~ 10000g/mol.
5. a kind of formaldehyde adsorbent according to claim 1, is characterized in that, described adsorbing agent carrier is the one in active carbon or attapulgite clay or diatomite or CNT.
6. a preparation method for formaldehyde adsorbent, is characterized in that, comprises the steps:
Side chain is contained active methylene group high molecular polymer and be dissolved in organic solvent, add deionized water dilution, and add catalyst and stir and obtain mixed liquor;
Adsorbing agent carrier carries out drying in thermostatic drying chamber, puts into above-mentioned mixed liquor after drying, soaks 4-6h and takes out;
Adsorbing agent carrier after soaking is placed in vacuum drying chamber, and 25-40 DEG C is carried out dried overnight, obtains formaldehyde adsorbent.
7. the preparation method of a kind of formaldehyde adsorbent according to claim 6, is characterized in that, described organic solvent is the one in ethanol or ethylene glycol or ether or oxolane or acetone or dioxane.
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Cited By (4)
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| CN106607011A (en) * | 2016-12-31 | 2017-05-03 | 苏州宇希新材料科技有限公司 | Environmentally friendly formaldehyde adsorbing material |
| CN106732430A (en) * | 2016-12-31 | 2017-05-31 | 苏州宇希新材料科技有限公司 | A kind of preparation method of environmentally friendly methyl aldehyde adsorption material |
| CN108066931A (en) * | 2017-09-28 | 2018-05-25 | 广州市碧安康环境技术有限公司 | A kind of macromolecule formaldehyde scavenger |
| CN109092055A (en) * | 2018-10-16 | 2018-12-28 | 上海朗绿建筑科技股份有限公司 | A kind of formaldehyde adsorbent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106607011A (en) * | 2016-12-31 | 2017-05-03 | 苏州宇希新材料科技有限公司 | Environmentally friendly formaldehyde adsorbing material |
| CN106732430A (en) * | 2016-12-31 | 2017-05-31 | 苏州宇希新材料科技有限公司 | A kind of preparation method of environmentally friendly methyl aldehyde adsorption material |
| CN108066931A (en) * | 2017-09-28 | 2018-05-25 | 广州市碧安康环境技术有限公司 | A kind of macromolecule formaldehyde scavenger |
| CN109092055A (en) * | 2018-10-16 | 2018-12-28 | 上海朗绿建筑科技股份有限公司 | A kind of formaldehyde adsorbent and preparation method thereof |
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