CN106273194A - A kind of melamino-formaldehyde resin microwave foaming and after-treatment device - Google Patents
A kind of melamino-formaldehyde resin microwave foaming and after-treatment device Download PDFInfo
- Publication number
- CN106273194A CN106273194A CN201610856380.8A CN201610856380A CN106273194A CN 106273194 A CN106273194 A CN 106273194A CN 201610856380 A CN201610856380 A CN 201610856380A CN 106273194 A CN106273194 A CN 106273194A
- Authority
- CN
- China
- Prior art keywords
- microwave
- cavity
- melamino
- treatment device
- ripening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
- C08G12/32—Melamines
Abstract
The open a kind of melamino-formaldehyde resin microwave foaming of the present invention and after-treatment device, belong to resin microwave foam device technical field, cavity is dried including microwave cavity and ripening, described microwave cavity and described ripening are dried and are provided with liquefied ammonia spray cavity between cavity, described ripening is dried the top of cavity and is provided with multiple drying microwave source, described ripening is dried and is provided with hot blast diffusion pipe network on the sidewall of cavity, described hot blast diffusion pipe network connects hot air duct, described hot air duct connects heater, described ripening is dried the top of cavity and is provided with air outlet, electrically operated valve it is provided with at air outlet, air outlet is connected with wind pipe by electrically operated valve.Melamine resin foam fragility prepared by the present invention is little, be difficult to dry linting, draw that to stretch tearing strength high, efficiently solves problems of the prior art, and makes melamino-formaldehyde foam have good mechanical performance and fire-retardant performance muffler.
Description
Technical field
The present invention relates to resin microwave foam device technical field, particularly to a kind of melamino-formaldehyde resin microwave foaming and
After-treatment device.
Background technology
Melamino-formaldehyde resin, also known as melamine resin (melamine-formaldehyde resin), melamine tree
Fat, is the polymer obtained by tripolycyanamide reacts with formaldehyde.Crosslinking reaction during machine-shaping, goods are insoluble thermosetting
Property resin, the most often it is referred to as amino resins with Lauxite.
Melamine resin foam is with melamine resin as matrix, through a kind of resistance that special foam process prepares
Combustion foam plastics.Its quality is relatively light, has that the anti-flammability of excellence, thermal insulation, heat stability, sound-absorbing be sound-deadening properties, safety and sanitation
With good secondary workability, can be widely applied to the fields such as building, machinery, chemical industry, transportation.Melamine formaldehyde resin
Solidification be interlaced with triazine interannular by methylene or dimethylene, so melamine resin through foaming
After, the foamed open cell rate of formation is higher, and pore structure is uniform.But, the melamine resin foam that existing process units produces exists
Foam the problems such as uneven, fragility is big, low, the follow-up continuous release formaldehyde of easy dry linting, tensile tear strength, causes the use of product
Rate is low.
Summary of the invention
The present invention provides a kind of melamino-formaldehyde resin microwave foaming and after-treatment device, solves existing melamine resin foam
The problem that follow-up continuous release formaldehyde, residual formaldehyde exceed standard.
For solving above-mentioned technical problem, the technical scheme is that
A kind of melamino-formaldehyde resin microwave foaming and after-treatment device, dry cavity including microwave cavity and ripening, described
Microwave cavity and described ripening are dried and are provided with liquefied ammonia spray cavity between cavity, and described ripening is dried the top of cavity and is provided with
Multiple drying microwave sources, the sidewall of described ripening drying cavity is provided with hot blast diffusion pipe network, and described hot blast diffusion pipe network is even
Being connected to hot air duct, described hot air duct connects heater, and described ripening is dried the top of cavity and is provided with air outlet, goes out
Being provided with electrically operated valve at air port, air outlet is connected with wind pipe by electrically operated valve.
Wherein it is preferred to, the top of described liquefied ammonia spray cavity is provided with spray header, and described spray header pumps out with water
The mouth of a river connects, and the water inlet of described water pump is connected to circulating water pool by pipeline, and described circulating water pool is arranged on the spray of described liquefied ammonia
Drenching the lower section of cavity, described liquefied ammonia spray cavity bottom is provided with water receiving tank, and described water receiving tank is by pipeline with circulating water pool even
Connect.
Wherein it is preferred to, described water receiving tank is arranged on the top of described circulating water pool, described water receiving tank and described recirculated water
The junction in pond is provided with defecator.
Wherein it is preferred to, described spray header has multiple hole for water spraying that Open Side Down, described hole for water spraying is provided with
Shower nozzle.
Wherein it is preferred to, described ripening is dried multiple drying microwave sources at cavity top and is divided two row's distribution, often rows 5, often
The power of individual microwave source is 1kW.
Wherein it is preferred to, the microwave frequency of described drying microwave source is 915MHz.
Wherein it is preferred to, the front of described microwave cavity is provided with prefoam microwave cavity, described pre-microwave cavity of firing
Roof and diapire respectively arrange the two little microwave sources of row, often 5 little microwave sources of row, the power of each little microwave source is 1kW, described micro-
Being provided with a power on the top roof of ripple cavity is the microwave source of 20kW.
Wherein it is preferred to, the microwave frequency in described microwave cavity is 915MHz.
Wherein it is preferred to, the microwave frequency in described prefoam microwave cavity is 2450MHz, described prefoam microwave cavity
Microwave check section it is provided with between body and described microwave cavity.
Wherein it is preferred to, the microwave frequency in described prefoam microwave cavity is 915MHz.
Beneficial effects of the present invention:
1. the present invention is dried at microwave cavity and ripening and is provided with liquefied ammonia spray cavity, liquefied ammonia and foam middle reaches between cavity
From formaldehyde generation chemical reaction, thus reduce the content of free formaldehyde, make residual formaldehyde in foam drop to below 30ppm.
2. the present invention is not provided only with traditional hot-air drying device in ripening drying cavity body, is additionally provided with microwave source,
Make foam carry out second time of foaming, not only increase frothing percentage and the uniformity of foam, also improve foam in subsequent use
Stability, if the release And Spread of Solute of formaldehyde, change in volume problem after long-time placement.
Process units the most of the present invention is provided with prefoam microwave cavity before microwave cavity, the most first carries out pre-
Bubble, efficiently avoid resin expanded during, owing to raying is uneven, and the problem that the foam density that causes is uneven.
4. the melamine resin foam fragility that prepared by the present invention is little, be difficult to dry linting, draw that to stretch tearing strength high, efficiently solves
Problems of the prior art, and make melamino-formaldehyde foam have good mechanical performance and fire-retardant performance muffler.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, put after not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the foaming of a kind of melamino-formaldehyde resin microwave and the structural representation of after-treatment device in the present invention.
In figure, 1. microwave cavity, 2. cavity is dried in ripening, 3. dries microwave source, 4. hot blast diffusion pipe network, 5. warm-air pipe
Road, 6. heater, 7. air outlet, 8. electrically operated valve, 9. wind pipe, 10. prefoam microwave cavity, 11. little microwave sources,
12. microwave sources, 13. draught hoods, 14. air draft pipes, 15. heat reclamation type emission-control equipments, 16. negative-pressure air fans, 17. air-supplies
Cover, 18. air supply ducts, 19. volume dampers, 20. spray headers, 21. water pumps, 22. circulating water pools, 23. water receiving tanks, 24. sprays
Head
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment
It is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
Embodiment 1
As it is shown in figure 1, the present embodiment provides a kind of melamino-formaldehyde resin microwave foaming and after-treatment device, including microwave cavity
Cavity is dried in body and ripening, is provided with liquefied ammonia spray cavity between microwave cavity and ripening drying cavity, liquefied ammonia spray cavity
Top is provided with spray header, and spray header is connected with pump outlet, and the water inlet of water pump is connected to recirculated water by pipeline
Pond, circulating water pool is arranged on the lower section of liquefied ammonia spray cavity, and liquefied ammonia spray cavity bottom is provided with water receiving tank, and water receiving tank is by pipe
Road is connected with circulating water pool.Water receiving tank is arranged on the top of circulating water pool, and water receiving tank was provided with the junction of circulating water pool
Filter device.Have multiple hole for water spraying that Open Side Down on spray header, hole for water spraying is provided with shower nozzle.
In liquefied ammonia spray cavity, foam is transported to spray in cavity from microwave foaming furnace by carrier bar, spray cavity
Top arranges spray head, and foam is sprayed by spray head by ammonia or ammonium chloride solution, spray liquid and the free first in foam
Aldehyde generation chemical reaction, reaction equation is as follows:
The first step: ammonia water electricity separates out the process of ammonium radical ion:
NH3·H2O=NH++OH-
Second step: ammonium radical ion and formaldehyde react generate hexamethylenetetramine cation process:
6HCHO+4NH4 +=(CH2)6N4H++3H++H2O
3rd step: hexamethylenetetramine cation and unionized NH in ammonia3Reaction generates the mistake of hexamethylene amine salt
Journey:
(CH2)6N4H++NH3=(CH2)6N4+NH4 +
Owing to first step ammonia ionization reaction is a reversible reaction, during the hydroxide ion of generation can react with second step
The hydrion generated combines and generates water, promotes that first step reaction is moved toward positive direction, thus ionizes out more ammonium radical ion；And the
The ammonium radical ion that one step and the 3rd step generate can participate in the reaction of second step, is used for consuming formaldehyde, and whole course of reaction is individual
Cyclic process, until formaldehyde runs out of.
Ripening is dried the top of cavity and is provided with multiple drying microwave source, and ripening is dried and is provided with hot blast on the sidewall of cavity
Diffusion pipe network, hot blast diffusion pipe network connects hot air duct, and hot air duct connects heater, and the top of cavity is dried in ripening
Being provided with air outlet, be provided with electrically operated valve at air outlet, air outlet is connected with wind pipe by electrically operated valve.Ripening is dried
Multiple drying microwave sources at cavity top divide two row's distribution, often rows 5, and the power of each microwave source is 1kW, dries microwave source
Microwave frequency is 915MHz.The present embodiment is not provided only with traditional hot-air drying device in cavity 2 is dried in ripening, also sets up
There is microwave source, make foam carry out second time of foaming, not only increase frothing percentage and the uniformity of foam, also improve foam follow-up
Stability in using, if the release And Spread of Solute of formaldehyde, change in volume problem after long-time placement.
Wherein, the front of microwave cavity is provided with prefoam microwave cavity, and roof and the diapire of microwave cavity of firing in advance are each
Arranging the two little microwave sources of row, often 5 little microwave sources of row, the power of each little microwave source is 1kW, and the top roof of microwave cavity sets
Being equipped with a power is the microwave source of 20kW.Microwave frequency in microwave cavity is 915MHz.The most first carry out prefoam,
Efficiently avoid resin expanded during, owing to raying is uneven, and the problem that the foam density that causes is uneven.
Wherein, the microwave frequency in prefoam microwave cavity is 2450MHz, owing to the microwave frequency of the two is different, for keeping away
The microwave exempted from cavity interferes, and is provided with microwave check section between prefoam microwave cavity and microwave cavity.Prefoam
Microwave check section it is provided with between microwave cavity and microwave cavity.
Embodiment 2
As it is shown in figure 1, the present embodiment provides a kind of melamino-formaldehyde resin microwave foaming and after-treatment device, at the present embodiment
In, the front of microwave cavity is provided with prefoam microwave cavity, and the microwave frequency in prefoam microwave cavity is 915MHz, microwave
Microwave frequency in cavity is 915MHz.Owing to the microwave frequency of the two is consistent, need not therebetween arrange microwave check again
Section.
Other structure of the present embodiment is all identical with enforcement 1, does not repeats them here.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. the foaming of melamino-formaldehyde resin microwave and an after-treatment device, dries cavity, its feature including microwave cavity and ripening
It is: described microwave cavity and described ripening are dried and be provided with liquefied ammonia spray cavity between cavity, and cavity is dried in described ripening
Top is provided with multiple drying microwave source, and described ripening is dried and is provided with hot blast diffusion pipe network, described hot blast on the sidewall of cavity
Diffusion pipe network connects hot air duct, and described hot air duct connects heater, and described ripening is dried the top of cavity and arranged
Having air outlet, be provided with electrically operated valve at air outlet, air outlet is connected with wind pipe by electrically operated valve.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 1 and after-treatment device, it is characterised in that: described
The top of liquefied ammonia spray cavity is provided with spray header, and described spray header is connected with pump outlet, the water inlet of described water pump
Mouth is connected to circulating water pool by pipeline, and described circulating water pool is arranged on the lower section of described liquefied ammonia spray cavity, and described liquefied ammonia sprays
Drenching cavity bottom and be provided with water receiving tank, described water receiving tank is connected with circulating water pool by pipeline.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 2 and after-treatment device, it is characterised in that: described
Water receiving tank is arranged on the top of described circulating water pool, and described water receiving tank is provided with filtration dress with the junction of described circulating water pool
Put.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 2 and after-treatment device, it is characterised in that: described
Have multiple hole for water spraying that Open Side Down on spray header, described hole for water spraying is provided with shower nozzle.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 1 and after-treatment device, it is characterised in that: described
Ripening is dried multiple drying microwave sources at cavity top and is divided two row's distribution, often rows 5, and the power of each microwave source is 1kW.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 5 and after-treatment device, it is characterised in that: described
The microwave frequency drying microwave source is 915MHz.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 1 and after-treatment device, it is characterised in that: described
The front of microwave cavity is provided with prefoam microwave cavity, and the roof of described pre-microwave cavity of firing and diapire two rows that respectively arrange are little
Microwave source, often 5 little microwave sources of row, the power of each little microwave source is 1kW, and the top roof of described microwave cavity is provided with one
Individual power is the microwave source of 20kW.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 7 and after-treatment device, it is characterised in that: described
Microwave frequency in microwave cavity is 915MHz.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 8 and after-treatment device, it is characterised in that: described
Microwave frequency in prefoam microwave cavity is 2450MHz, arranges between described prefoam microwave cavity and described microwave cavity
There is microwave check section.
A kind of melamino-formaldehyde resin microwave foaming the most according to claim 8 and after-treatment device, it is characterised in that: institute
Stating the microwave frequency in prefoam microwave cavity is 915MHz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856380.8A CN106273194A (en) | 2016-09-27 | 2016-09-27 | A kind of melamino-formaldehyde resin microwave foaming and after-treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610856380.8A CN106273194A (en) | 2016-09-27 | 2016-09-27 | A kind of melamino-formaldehyde resin microwave foaming and after-treatment device |
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| CN201610856380.8A Pending CN106273194A (en) | 2016-09-27 | 2016-09-27 | A kind of melamino-formaldehyde resin microwave foaming and after-treatment device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877768A (en) * | 2017-11-07 | 2018-04-06 | 濮阳绿宇泡绵有限公司 | A kind of continuous foamed device of amino sound-absorbing sponge |
| CN109352894A (en) * | 2018-11-02 | 2019-02-19 | 郑州峰泰纳米材料有限公司 | A kind of continuous uniformity foam device of melamine bubble |
| CN109400943A (en) * | 2018-11-02 | 2019-03-01 | 郑州峰泰纳米材料有限公司 | A kind of aftertreatment technology that ultra-low formaldehyde melamine bubble is continuous |
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Cited By (3)
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| CN109400943A (en) * | 2018-11-02 | 2019-03-01 | 郑州峰泰纳米材料有限公司 | A kind of aftertreatment technology that ultra-low formaldehyde melamine bubble is continuous |
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