CN109881531A - A kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper - Google Patents
A kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper Download PDFInfo
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- CN109881531A CN109881531A CN201910312654.0A CN201910312654A CN109881531A CN 109881531 A CN109881531 A CN 109881531A CN 201910312654 A CN201910312654 A CN 201910312654A CN 109881531 A CN109881531 A CN 109881531A
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- molecular sieve
- sodium form
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- smoke suppressant
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Abstract
A kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper, the invention introduces copper ion into sodium form 4A molecular sieve in a manner of through ion exchange, by adjust pH value, reduction bivalent cupric ion, ion exchange, ultrasonic wave dispersion, stirring, high temperature drying, grind, the techniques such as high-temperature calcination obtain copper modification sodium form 4A molecular sieve.The modified molecular screen smoke suppressant is carrying out flame-retardant smoke inhibition to material by way of the gas that makes that carbon-coating is fine and close, catalysis oxidation is imperfect combustion, a variety of materials after can be widely used for flame retardant treatment, it is particularly suitable for the flame-retardant smoke inhibition of high molecular polymer, wood plastic composite, wood fibre, flue gas is generated to reduce flame retardant treatment after-combustion object, reduces and is endangered caused by burning.
Description
Technical field
The invention belongs to the modified fields of molecular functionization, and the specially modified sodium form 4A molecular sieve of transition metal is as fire-retardant suppression
The preparation method of fumicants.
Technical background
Often flue gas maximum to human and environment harm in a fire.The generation of flue gas is not only resulted in surrounding air
The serious destruction of environment, and due to the generation place of will also result in of flue gas in a fire indicator of trapped personnel expiratory dyspnea, CO poisoning,
Respiratory tract such as is burnt at the harm.How to reduce flue gas in combustion process generation become solve fire hazard important channel it
One.
Combustible will form fine particle and imflammable gas in combustion process, can be drawn under the action of extraneous fire source
Combustion forms flame, and the fire retardant little particle in part forms flue gas.The generation of flue gas is mainly by combustible in combustion process in decomposable process
Ambient enviroment is dispersed under the power effect of rising of the tiny fire retardant particle of middle formation size in hot gas to be formed.
The main means for promoting Flame Retardancy energy at present are still addition fire retardant, and addition fire retardant is mainly the resistance of nitrogen phosphorus system
It fires agent, halogenated flame retardant, metal oxide or hydroxide flame retardant and has synthesizer fire retardant.It is fire-retardant in combustion
Agent can be flammable by forming carbon-coating, the transmitting for generating the gas-insulated heat of nonflammable and isolation while inhibiting sample combustion
Contact of the object with oxygen.The formation of heat-insulated carbon-coating and the generation of fire retardant gas, the material after making flame retardant treatment can generate more
Flue gas.
Molecular sieve is as the inorganic material containing hole, cavity and negative electrical charge in a kind of structural framing, to the performance of flue gas
There is certain inhibiting effect, while the thermal stability of material and the compactness extent of carbon-coating can be increased.
Copper is a kind of transition metal with catalysis oxidation, and univalent copper ion can will be burnt by the conversion between valence state
The gas catalysis oxidation of non-complete oxidation burning is converted to fully oxidized in the process, and catalyzing carbon monoxide is such as oxidized to titanium dioxide
Carbon reduces the harm of flue gas.
By way of ion exchange by copper ion in conjunction with molecular sieve, using the two advantage as the suppression in flame-retardant system
Bring smoke increases after fumicants can effectively solve the problems, such as flame retardant treatment.
Summary of the invention
Technical problem solved by the invention is to provide a kind of preparation method of modified sodium form 4A molecular sieve smoke suppressant of copper,
The invention will introduce copper ion using sodium form 4A molecular sieve as smoke suppressant main body by way of ion exchange, by adjusting pH
Value, reduction bivalent cupric ion, ion exchange, ultrasonic wave dispersion, stirring, high temperature drying, grind, the techniques such as high-temperature calcination obtain
To the modified sodium form 4A molecular sieve of copper.The modified molecular screen smoke suppressant can be widely used for a variety of materials after flame retardant treatment, especially suitable
For high molecular polymer, wood plastic composite, wood fibre flame-retardant smoke inhibition, thus reduce flame retardant treatment after-combustion object generation
Flue gas is reduced and is endangered caused by burning.
Technical problem solved by the invention is realized using following technical scheme:
A kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper, comprising the following steps:
(1) a certain amount of sodium form 4A molecular sieve grinding will be weighed, is scattered in deionized water, adjusts pH.
(2) it weighs a certain amount of Gerhardite to be dissolved in the liquid prepared in (1), is stirred well to abundant dissolution.
(3) adjusting solution ph is acidic environment, heats and is sufficiently stirred.
(4) it is filtered after stirring, by solid particle after filtering in oven drying to constant weight.
(5) sample after drying carries out carrying out high-temperature calcination after being ground to certain partial size.
(6) it can be used after regrinding to certain partial size after calcining.
The excellent properties that sample is prepared for guarantee are 7 as pH in preferred above-mentioned steps (1).
Preferably, molecular sieve and the additive amount of copper oxide are in every 100 ml deionized water in above-mentioned steps (1), (2)
It adds between 9 grams to 11 grams of sodium form 4A molecular sieve, Gerhardite is between 2 grams to 2.5 grams.
Preferably, pH in above-mentioned steps (3) is between 2 to 4, temperature is between 70 DEG C to 90 DEG C when stirring.
Preferably, the oven drying temperature in above-mentioned steps (4) is between 70 DEG C to 90 DEG C.
Preferably, the calcination temperature in above-mentioned steps (5) is to carry out under excess oxygen between 600 DEG C to 800 DEG C.
Compared with the prior art, the invention has the following advantages: the modified sodium form 4A molecular sieve of copper is oxygen-enriched after high-temperature calcination
Under the conditions of can form univalent copper ion, the generation of the flue gas after flame retardant treatment can be effectively suppressed in the modified sodium form 4A molecular sieve of copper, leads to
Sodium form 4A molecular sieve after crossing ion exchange, area load copper ion can urge carbon monoxide, the gases such as unsaturated alkane
Change oxidation, reduces the generation of pernicious gas.The modified sodium form 4A molecular sieve of copper can use itself have it is unique microcosmic porous
Structure keeps carburization zone firmer, can preferably reduce the propagation of heat ecto-entad.
Case is embodied
Embodiment 1
Technological means of the invention, preparation flow are stated in order to preferably state, is carried out below with reference to specific implementation case
Illustrate the present invention
Ground 200 mesh of sodium form 4A molecular sieve for weighing 50 grams, is added in 500 ml deionized waters, with nitric acid tune
It saves pH and is equal to 7, and stir in ultrasonic bath to being uniformly dispersed.11.5 grams of Gerhardites are added to and above-mentioned are dispersed with sodium
In the liquid of type 4A molecular sieve, nitre acid for adjusting pH is equal to 4, and stirs 2 hours under the conditions of 90 DEG C.It is filtered after stirring, it will
The solid particle remained on filter paper after filtering is dried, and drying temperature is 90 DEG C.It will be after solid abrasive after drying to constant weight
It is put into Muffle furnace and calcines, calcination temperature is 750 DEG C, and the time is 4 hours.It is ground to calcine solid particle progress after cooling
Sieve, specific particle size according to actual needs depending on, that is, be prepared for the modified sodium form 4A molecular sieve smoke suppressant of copper.
Using the modified sodium form 4A molecular sieve of copper (preparing by embodiment) as smoke suppressant, resistance is formed using phosphoguanidine as fire retardant
Combustion system, which is added in paper pulp, prepares flame-retardant smoke inhibition cardboard (c-3), with the cardboard after pure paper plate (c-1), phosphoguanidine flame retardant treatment
(c-2) taper calorimetric test is carried out as control sample.Test result shows the total smoke-producing amount (TSP) and carbon monoxide yield of c-3
(COY) slightly rise compared to c-1, ascensional range is respectively less than 5%.Compared to c-2, TSP, COY of c-3 has dropped respectively
47.2% and 59.8%, it is fire-retardant after smoke suppressing effect it is obvious, the generation of flue gas can be effectively suppressed.
The foregoing describe basic principles and main features of the invention and advantages of the present invention.The technical staff of the industry answers
The understanding, the present invention are not limited by the example, and the above embodiments and description only illustrate the principle of the present invention,
Under the premise of not departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements are all
It falls into claimed range.The claimed scope of the invention is by appended claims machine equivalent thereof.
Claims (6)
1. a kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper, which comprises the following steps:
(1) a certain amount of sodium form 4A molecular sieve grinding will be weighed, is scattered in deionized water, adjusts pH；
(2) it weighs a certain amount of Gerhardite to be dissolved in the liquid prepared in (1), is stirred well to abundant dissolution；
(3) adjusting solution ph is acidic environment, heats and is sufficiently stirred；
(4) it is filtered after stirring, by solid particle after filtering in oven drying to constant weight；
(5) sample after drying carries out carrying out high-temperature calcination after being ground to certain partial size；
(6) it can be used after regrinding to certain partial size after calcining.
2. a kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper according to claim 1, which is characterized in that institute
Stating pH in step (1) is 7.
3. a kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper according to claim 1, which is characterized in that step
Suddenly (1), molecular sieve and the additive amount of copper oxide are that 9 grams to 11 of sodium form 4A molecular sieve are added in every 100 ml deionized water in (2)
Between gram, Gerhardite be 2 grams to 2.5 grams between.
4. a kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper according to claim 1, which is characterized in that step
Suddenly the pH in (3) is between 2 to 4, and temperature is between 70 DEG C to 90 DEG C when stirring.
5. a kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper according to claim 1, which is characterized in that step
Suddenly the oven drying temperature in (4) is between 70 DEG C to 90 DEG C.
6. a kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper according to claim 1, which is characterized in that step
Suddenly the calcination temperature in (5) is to carry out under excess oxygen between 600 DEG C to 800 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910312654.0A CN109881531A (en) | 2019-04-18 | 2019-04-18 | A kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper |
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| CN201910312654.0A CN109881531A (en) | 2019-04-18 | 2019-04-18 | A kind of preparation method of the modified sodium form 4A molecular sieve smoke suppressant of copper |
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| CN109881531A true CN109881531A (en) | 2019-06-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808186A (en) * | 2021-01-04 | 2021-05-18 | 北京林业大学 | Preparation method of double-wall hydrophobic flame-retardant microcapsule |
Citations (4)
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|---|---|---|---|---|
| US4307010A (en) * | 1980-01-17 | 1981-12-22 | Pennwalt Corporation | Zeolites as smoke suppressants for halogenated polymers |
| CN106084450A (en) * | 2016-06-03 | 2016-11-09 | 北京化工大学 | A kind of preparation method and applications of hetero atom 4A type molecular sieve |
| CN108086044A (en) * | 2018-01-03 | 2018-05-29 | 北京林业大学 | A kind of preparation method of flame retardant type corrugated board |
| CN108673705A (en) * | 2018-05-15 | 2018-10-19 | 王敏 | A kind of high-performance refractory plate and preparation method thereof |
-
2019
- 2019-04-18 CN CN201910312654.0A patent/CN109881531A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307010A (en) * | 1980-01-17 | 1981-12-22 | Pennwalt Corporation | Zeolites as smoke suppressants for halogenated polymers |
| CN106084450A (en) * | 2016-06-03 | 2016-11-09 | 北京化工大学 | A kind of preparation method and applications of hetero atom 4A type molecular sieve |
| CN108086044A (en) * | 2018-01-03 | 2018-05-29 | 北京林业大学 | A kind of preparation method of flame retardant type corrugated board |
| CN108673705A (en) * | 2018-05-15 | 2018-10-19 | 王敏 | A kind of high-performance refractory plate and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杨国超等: "阻燃处理瓦楞纸板的性能及表征", 《包装工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808186A (en) * | 2021-01-04 | 2021-05-18 | 北京林业大学 | Preparation method of double-wall hydrophobic flame-retardant microcapsule |
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Application publication date: 20190614 |