CN106752107A - The modified device and method of modifying of a kind of magnesium hydroxide - Google Patents
The modified device and method of modifying of a kind of magnesium hydroxide Download PDFInfo
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- CN106752107A CN106752107A CN201710037797.6A CN201710037797A CN106752107A CN 106752107 A CN106752107 A CN 106752107A CN 201710037797 A CN201710037797 A CN 201710037797A CN 106752107 A CN106752107 A CN 106752107A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/028—Compounds containing only magnesium as metal
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses the modified device and method of modifying of a kind of magnesium hydroxide.The modified device includes modified storehouse, modified storehouse drive device, modifying agent flusher, modifying agent metering heating conveyor, powder metering conveying device and modified storehouse heating-cooling device；Modified storehouse heating-cooling device is arranged at the surface in modified storehouse；Modifying agent flusher is located at the inside in modified storehouse；Modified storehouse drive device includes a motor and a motor for being used to control the rotation of modifying agent flusher for being used to control modified storehouse rotation；Modifying agent metering heating conveyor includes the metering device I, thermostatical oil bath and the gas atomization device that are sequentially connected；Gas atomization device is connected by pipeline A with modifying agent flusher；Powder metering conveying device includes the metering device II and powder transfer device that are sequentially connected；Powder transfer device is connected with modified storehouse.The modified magnesium hydroxide covered effect prepared by the modified device is good.
Description
Technical field
The invention belongs to material processing field, the modified device and method of modifying of more particularly to a kind of magnesium hydroxide.
Background technology
Magnesium hydroxide is a kind of novel environment friendly filled-type fire retardant, is discharged during by being thermally decomposed and combines water, absorbs big
The latent heat of amount reduces the surface temperature of synthetic material that it is filled in flame, decomposes and to institute with polymer is suppressed
The effect that the fuel gas of generation is cooled down, the magnesia for decomposing generation is again good refractory material, can also help improve
The fire resistance of synthetic material.Magnesium hydroxide be have in generally acknowledged rubber and plastic industry fire-retardant, suppression cigarette, filling triple functions it is outstanding
Fire retardant.In view of the intrinsic excellent characteristic of magnesium hydroxide, is especially suitable in flame-retardant breathable film as fire retardant and pore former.With
China more and more stricter to building energy conservation environmental requirement, each research of producer to flame-retardant breathable film is increasingly paid attention to.It is domestic
Fire-resistant waterproof ventilation film production process for building is multifarious, and each product quality is uneven, exists with external product larger
Gap, is mainly manifested in：1) tensile strength is low, and 2) steam breathability can be poor, and 3) the short easy efflorescence of product service life etc., 4) produce
Product are not fire-retardant not environmentally.Existing magnesium hydroxide on the market is difficult to meet fire-retardant due to the limitation of method of modifying and modified device
The requirement of air film, the covered effect for being mainly manifested in magnesium hydroxide is bad, easily reunites, and the dispersiveness in vistanex is difficult
To ensure, therefore the modified magnesium hydroxide that the suitable flame-retardant breathable film of exploitation is used is just extremely urgent.
The content of the invention
Primary and foremost purpose of the invention is the shortcoming and deficiency for overcoming prior art, there is provided a kind of the modified of magnesium hydroxide sets
It is standby.
Another object of the present invention is to provide a kind of method of modifying of magnesium hydroxide.The method of modifying is changed using above-mentioned
Property equipment realize.
The purpose of the present invention is achieved through the following technical solutions：A kind of modified device of magnesium hydroxide, comprising modified storehouse, changes
Property storehouse drive device, modifying agent flusher, modifying agent metering heating conveyor, powder metering conveying device and modified storehouse add
Apparatus for cooling；
Described modified storehouse heating-cooling device includes heating tube and cooling liquid pipeline；Heating tube and cooling liquid pipeline
It is alternately disposed at the surface in modified storehouse；So as to by controlling flow rate of liquid or temperature in heating tube and control cooling liquid pipeline
Degree, the temperature in the modified storehouse of control so that material reaches technique initialization temperature in modified storehouse；
Described modifying agent flusher includes some groups of agitating paddles, and agitating paddle is arranged on drive shaft II, positioned at modified
The inside in storehouse；Every group of agitating paddle is made up of two panels blade I and a piece of blade II, and blade I is the blade that tangent plane is circular arc, blade
II is that tangent plane is rectangular blade；Two panels blade I is respectively positioned at the both sides of blade II；It is modified in being internally provided with for blade II
Agent spraying pipeline；Flow-stopping plate is set on every blade I；So as to, in the presence of flow-stopping plate, magnesium hydroxide and agitating paddle and gear
Stream plate produces the shock of multiple directions, is so conducive to opening the small reunion of magnesium hydroxide, is the modifying agent of blade II sprinklings
Magnesium hydroxide surface is uniformly coated on to create conditions；
Described modified storehouse drive device changes including a motor for being used to control modified storehouse rotation and one for control
Property the motor that rotates of agent flusher；Motor for controlling modified storehouse to rotate is connected by drive shaft I with modified storehouse, for controlling
The motor that modifying agent flusher processed is rotated is connected by drive shaft II with modifying agent flusher；
Described modifying agent metering heating conveyor includes the metering device I, thermostatical oil bath and the gas that are sequentially connected
Sprayer unit；Gas atomization device is connected by pipeline A with modifying agent flusher；Modifying agent is quantitatively entered by metering device I
Enter in thermostatical oil bath, be heated to form liquid, the effect of compressed air of the liquid modifying agent for obtaining in gas atomization device
The lower vaporific modifying agent of generation；
Described powder metering conveying device includes the metering device II and powder transfer device that are sequentially connected；Powder conveying
Device is connected with modified storehouse.
The modified device of described magnesium hydroxide also include control unit, control unit respectively with modified storehouse drive device,
Modifying agent metering heating conveyor, powder metering conveying device and the connection of modified storehouse heating-cooling device.By control unit,
The flow rate of liquid or temperature in the heating tube and cooling liquid pipeline in modified storehouse heating-cooling device can be controlled, and then is controlled
The temperature in modified storehouse；By control unit, motor for controlling modified storehouse to rotate can be adjusted and for controlling modifying agent to spray
Spill rotating speed and the steering of the motor of device rotation；By control unit, powder metering conveying device and modified storehouse can be controlled to add
Apparatus for cooling, and then control the addition of modifying agent and powder and add the time.
Described control unit is preferably computer.
The described preferably cylindrical hollow cylinder in modified storehouse.
Described motor and the described electricity for controlling the rotation of modifying agent flusher for controlling modified storehouse rotation
Machine is preferably variable-frequency motor, can particularly preferably adjust rotating speed and the variable-frequency motor for turning to.
Described blade I is connected by its circular arc point of contact with described blade II, centered on tie point, blade I and oar
Leaf II is symmetrical structure.
The block number of described flow-stopping plate is more than 1 piece, preferably 4 pieces.
The outlet of described modifying agent spraying pipeline is preferably arranged on the side of the blade II being connected with blade I, this
When, the outlet of modifying agent spraying pipeline cannot be below the height of blade I, the i.e. outlet of modifying agent spraying pipeline can not be by blade I
Shelter from completely, so as to be conducive to modifying agent along tangent plane for the direction of the blade of circular arc sprays, and be circular arc by tangent plane
Blade further disperse, modifying agent after spraying out more can uniform fold on the surface of powder.
Described flow-stopping plate be arranged in parallel with drive shaft II.
Described metering device I includes Weight metering device and mass metrology device.
Described pipeline A is arranged on the inside of drive shaft II.
Described powder transfer device is preferably powder pneumatic conveying device, more preferably compressed air powder pneumatic conveying
Device.
Described metering device II includes Weight metering device and mass metrology device.
Application of the modified device of described magnesium hydroxide in magnesium hydroxide is modified.
A kind of method of modifying of magnesium hydroxide, is to be realized using the modified device of above-mentioned magnesium hydroxide, is comprised the following steps：
(1) by the modified storehouse rotation following parameter of setting：Modified storehouse and modifying agent measure the temperature of heating conveyor, are modified
The addition and addition flow velocity of the rotation parameter in storehouse, magnesium hydroxide and modifying agent；
(2) modified device of described magnesium hydroxide is started；
(3) it is defeated in modifying agent metering heating after modified storehouse and modifying agent metering heating conveyor reach design temperature
Send and add modifying agent in device, magnesium hydroxide is added in powder metering conveying device；
(4) modified storehouse is passed through magnesium hydroxide in the state of rotation；Meanwhile, formed by modifying agent metering heating conveyor
Vaporific modifying agent by modifying agent flusher also into modified storehouse；Magnesium hydroxide rotates in modified storehouse with modified storehouse
And form irregular back and forth movement, the spray of modifying agent flusher under agitating paddle and flow-stopping plate effect in modifying agent flusher
The modifying agent for going out at regular time and quantity be sprayed at magnesium hydroxide surface；
(5) after magnesium hydroxide is added to the volume of modified storehouse 3/4, stop hydrogenation magnesia, continue to add modifying agent at regular time and quantity,
After to be modified dose is added to magnesium hydroxide quality 2%~5%, stop adding modifying agent, continue executing with modified storehouse rotating technics, until
Technique has been performed.
The parameter of described modified storehouse rotating technics is preferably as follows：
1) storehouse is modified by the startup of 500~1000rpm rotating speeds, and modifying agent flusher is opened by rotating speed 300~500rpm rotating speeds
Dynamic, be modified storehouse and the equidirectional rotation of modifying agent flusher；At 100~250 DEG C, modifying agent metering adds the temperature setting in modified storehouse
The temperature setting of heat transfer apparatus (i.e. added with metered charge and the thermostatical oil bath of conveying material function) is at 50~300 DEG C；
2) based on 0.5~1kg/h, the addition flow velocity of magnesium hydroxide is by based on 1~5kg/h for the addition flow velocity of modifying agent；
3) treat that magnesium hydroxide and modifying agent add post-modification storehouse and rotated by 1500~2000rpm of rotating speed, modifying agent sprinkling dress
Put and rotated by 500~800rpm of rotating speed；Modified storehouse and the equidirectional rotation of modifying agent flusher, and with step 1) in direction phase
Together；Rotational time is 10~20 minutes；
4) 1500~2000rpm of rotating speed rotations are pressed in modified storehouse, and modifying agent flusher presses 500~800rpm of rotating speed rotations；
Modified storehouse and the rotation of modifying agent flusher opposite direction；Rotational time is 20~30 minutes.
Step 1) described in rotation preferably rotate in the direction of the clock.
Step 3) described in rotation preferably rotate in the direction of the clock.
Step 4) described in the direction of rotation in modified storehouse be preferably counterclockwise, the rotation of described modifying agent flusher
Direction is preferably clockwise.
Described modifying agent is surface modifier, including silane coupler, titanate coupling agent, aluminate coupling agent and hard
Resin acid calcium etc..
The present invention has the following advantages and effect relative to prior art：
1st, the modified device that the present invention is provided obtains the good hydroxide of modifying agent covered effect mainly by following design
Magnesium：
(1) modifying agent metering heating conveyor is optimized, modifying agent is with by oil bath heating and atomization process, shape
Into mist form；
(2) modifying agent flusher is optimized, the spray outlet of modifying agent is arranged on blade, is turned at a high speed in blade
In the state of dynamic, further disperseed with the modifying agent that mist form is sprayed out, can preferably be coated on nano-sized magnesium hydroxide
On powder；Stirrer paddle is two kinds, and blade I is different with the shape of blade II, along with the rotation of modified storehouse in itself, magnesium hydroxide
Powder is acted in modified storehouse by different rotary centrifugal force, so as to the inwall being difficult close to modified storehouse is moved, and, blade
I is designed for arc-shaped, is more beneficial for magnesium hydrate powder toward movement in the middle of modified storehouse；Flow-stopping plate, hydroxide are set on blade I
Magnesium produces the shock of multiple directions with agitating paddle and flow-stopping plate, is conducive to opening the small reunion of magnesium hydroxide, is blade II sprays
The modifying agent for spilling is uniformly coated on magnesium hydroxide surface and creates conditions
2nd, magnesium hydroxide and modifying agent is collided under high shear conditions. based on the method for modifying used by this modified device, change
Clad ratio of the property agent on magnesium hydroxide surface has and greatly improves.
Brief description of the drawings
The structural representation of the modified device that Fig. 1 is provided for the present invention.
Fig. 2 is the structural representation of modified storehouse heating-cooling device.
Fig. 3 is the cross-sectional view of modifying agent flusher.
Wherein, the modified storehouses of 1-, the modified storehouse drive devices of 2-, 3- modifying agent flusher, 4- modifying agent metering heated transportation
Be modified storehouse heating-cooling device, 7- heating tubes, 8- cooling liquids pipeline, 10- of device, 5- powder meterings conveying device, 6- is used for
Motor, the 11- for controlling modified storehouse to rotate are the oar of circular arc for controlling the motor of modifying agent flusher rotation, 12- tangent planes
Leaf, 13- tangent planes are rectangular blade, 14- modifying agent spraying pipeline, 15- flow-stopping plates, 16- metering devices, 17- constant temperature oil baths
Pot, 18- gas atomization devices.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment 1
A kind of modified device of magnesium hydroxide, as shown in figure 1, comprising modified storehouse 1, modified storehouse drive device 2, modifying agent spray
Spill device 3, modifying agent metering heating conveyor 4, powder metering conveying device 5 and modified storehouse heating-cooling device 6.Such as Fig. 2
Shown, the storehouse heating-cooling device 6 that is modified includes heating tube 7 and cooling liquid pipeline 8；Heating tube 7 and cooling liquid pipeline 8 replace
It is arranged at the surface in modified storehouse.Modifying agent flusher 3 includes some groups of agitating paddles, and agitating paddle is arranged on drive shaft II, position
In the inside in modified storehouse.As shown in figure 3, every group of agitating paddle is rectangular by blade 12 and a piece of tangent plane that two panels tangent plane is circular arc
The blade 13 of shape is constituted, and two panels blade 12 is respectively positioned at the both sides of blade 13；Sprayed in the modifying agent that is internally provided with for cutting blade 13
Pipeline 14 is spilt, modifying agent spray outlet is provided with blade 13；Flow-stopping plate 15 is set on blade 12.Modified storehouse drive device
2 include a motor 10 and a motor 11 for controlling modifying agent flusher to rotate for being used to control modified storehouse to rotate；
Motor 10 is connected by drive shaft I with modified storehouse 1, and motor 11 is connected by drive shaft II with modifying agent flusher 3.Modifying agent
Metering heating conveyor 4 includes the metering device 16, thermostatical oil bath 17 and the gas atomization device 18 that are sequentially connected；Gas sprays
Mist device 18 is connected by pipeline A with modifying agent flusher 3；Modifying agent quantitatively enters thermostatical oil bath by metering device 16
In 17, liquid is heated to form, the liquid modifying agent for obtaining generates mist in the presence of the compressed air in gas atomization device 18
Shape modifying agent.Powder metering conveying device 5 includes the metering device II and powder transfer device that are sequentially connected；Powder transfer device
It is connected with modified storehouse.Powder metering conveying device 5 and modifying agent metering heating conveyor 4 link, and quantitatively add by process ratio
Modifying agent and magnesium hydroxide are in modified storehouse 1.
Specifically, motor 10 and 11 be variable-frequency motor, so as to adjust modified storehouse and modifying agent flusher rotating speed and
Turn to.
Blade 12 is connected by its circular arc point of contact with blade 13, and centered on tie point, it is right that blade 12 and blade 13 are
Claim structure.
The block number of flow-stopping plate 15 is 4 pieces.
Pipeline A is arranged on the inside of drive shaft II.
Powder transfer device is compressed air powder pneumatic conveying device.
Embodiment 2
The modified device of the magnesium hydroxide that Application Example 1 is provided is modified to magnesium hydroxide, and step is as follows：
(1) by the modified storehouse rotation following parameter of setting：Modified storehouse and modifying agent measure the temperature of heating conveyor, are modified
The addition and addition flow velocity of the rotation parameter in storehouse, magnesium hydroxide and modifying agent；
(2) modified device of described magnesium hydroxide is started；
(3) it is defeated in modifying agent metering heating after modified storehouse and modifying agent metering heating conveyor reach design temperature
Send and add modifying agent in device, magnesium hydroxide is added in powder metering conveying device；
(4) modified storehouse is passed through magnesium hydroxide in the state of rotation；Meanwhile, formed by modifying agent metering heating conveyor
Vaporific modifying agent by modifying agent flusher also into modified storehouse；Magnesium hydroxide rotates in modified storehouse with modified storehouse
And form irregular back and forth movement, the spray of modifying agent flusher under agitating paddle and flow-stopping plate effect in modifying agent flusher
The modifying agent for going out at regular time and quantity be sprayed at magnesium hydroxide surface；
(5) after magnesium hydroxide is added to the volume of modified storehouse 3/4, stop hydrogenation magnesia, continue to add modifying agent at regular time and quantity,
After to be modified dose is added to magnesium hydroxide quality 2%~5%, stop adding modifying agent, continue executing with modified storehouse rotating technics, until
Technique has been performed.
The parameter of described modified storehouse rotating technics is as follows：
1) startup of 800rpm rotating speeds press in the storehouse that is modified, and modifying agent flusher press the startup of rotating speed 400rpm rotating speeds, modified storehouse with
Modifying agent flusher turns clockwise；The temperature setting in modified storehouse measures heating conveyor in 200 DEG C and modifying agent
Temperature setting is 200~250 DEG C；
2) based on 0.8kg/h, the addition flow velocity of magnesium hydroxide is based on 2.5kg/h for the addition flow velocity of modifying agent calcium stearate；
3) treat that magnesium hydroxide and modifying agent add post-modification storehouse and rotated by rotating speed 1800rpm, modifying agent flusher is pressed and turned
Fast 650rpm rotations；Modified storehouse and modifying agent flusher turn clockwise；Rotational time is 10~20 minutes；
4) rotating speed 1800rpm rotate counterclockwises are pressed in modified storehouse, and modifying agent flusher turns clockwise by rotating speed 650rpm；
Rotational time is 20~30 minutes.
Modified magnesium hydroxide is granulated by polyolefin blend and prepares flame-retardant breathable film, flame-retardant breathable film base through casting machine
Weight is 40g/m2, before modified after a diameter of more than 0.1mm white points number (taking 20 films to average) on every square metre it is right
Than as shown in table 1：
Table 1
It can be seen that, the modified magnesium hydroxide covered effect obtained by the modified device is good, meets the requirement of flame-retardant breathable film,
Effect can match in excellence or beauty with external product.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of modified device of magnesium hydroxide, it is characterised in that comprising modified storehouse, modified storehouse drive device, modifying agent sprinkling dress
Put, modifying agent measures heating conveyor, powder metering conveying device and modified storehouse heating-cooling device；
Modified storehouse heating-cooling device includes heating tube and cooling liquid pipeline；Heating tube and cooling liquid pipeline are alternately disposed at
The surface in modified storehouse；
Modifying agent flusher includes some groups of agitating paddles, and agitating paddle is arranged on drive shaft II, positioned at the inside in modified storehouse；Often
Group agitating paddle is made up of two panels blade I and a piece of blade II, and blade I is the blade that tangent plane is circular arc, and blade II is that tangent plane is
Rectangular blade；Two panels blade I is respectively positioned at the both sides of blade II；Modifying agent spray line is internally provided with blade II
Road；Flow-stopping plate is set on every blade I；
Modified storehouse drive device is used to control modifying agent sprinkling dress including a motor for being used to control modified storehouse rotation and one
Put the motor of rotation；Motor for controlling modified storehouse to rotate is connected by drive shaft I with modified storehouse, for controlling modifying agent to spray
The motor for spilling device rotation is connected by drive shaft II with modifying agent flusher；
Modifying agent metering heating conveyor includes the metering device I, thermostatical oil bath and the gas atomization device that are sequentially connected；Gas
Spray body device is connected by pipeline A with modifying agent flusher；
Powder metering conveying device includes the metering device II and powder transfer device that are sequentially connected；Powder transfer device with it is modified
Storehouse connects.
2. the modified device of magnesium hydroxide according to claim 1, it is characterised in that：Also include control unit；Control is single
Unit is cold with modified storehouse drive device, modifying agent metering heating conveyor, powder metering conveying device and the heating of modified storehouse respectively
But device connection.
3. the modified device of magnesium hydroxide according to claim 2, it is characterised in that：Described control unit is calculating
Machine.
4. the modified device of magnesium hydroxide according to claim 1, it is characterised in that：
Described modified storehouse is cylindrical, hollow cylinder；
The described motor for controlling modified storehouse rotation is variable-frequency motor；
The described motor for controlling the rotation of modifying agent flusher is variable-frequency motor.
5. the modified device of magnesium hydroxide according to claim 1, it is characterised in that：
Described blade I is connected by its circular arc point of contact with described blade II, centered on tie point, blade I and blade II
It is symmetrical structure；
The outlet of described modifying agent spraying pipeline is arranged on the side of the blade II being connected with blade I, and can not be by blade I
Shelter from completely；
The block number of described flow-stopping plate is 4 pieces；
Described flow-stopping plate be arranged in parallel with drive shaft II.
6. the modified device of magnesium hydroxide according to claim 1, it is characterised in that：
Described metering device I includes Weight metering device and mass metrology device；
Described metering device II includes Weight metering device and mass metrology device.
7. the modified device of magnesium hydroxide according to claim 1, it is characterised in that：
Described powder transfer device is powder pneumatic conveying device.
8. a kind of method of modifying of magnesium hydroxide, it is characterised in that：Comprise the following steps：
(1) by the modified storehouse rotation following parameter of setting：Modified storehouse and modifying agent measure the temperature of heating conveyor, and be modified storehouse
The addition and addition flow velocity of rotation parameter, magnesium hydroxide and modifying agent；
(2) modified device of the magnesium hydroxide described in any one of claim 1~7 is started；
(3) after modified storehouse and modifying agent metering heating conveyor reach design temperature, in modifying agent metering heated transportation dress
Middle addition modifying agent is put, magnesium hydroxide is added in powder metering conveying device；
(4) modified storehouse is passed through magnesium hydroxide in the state of rotation；Meanwhile, the mist formed by modifying agent metering heating conveyor
Shape modifying agent is by modifying agent flusher also into modified storehouse；Magnesium hydroxide in modified storehouse with the rotation of modified storehouse and
Irregular back and forth movement is formed under agitating paddle and flow-stopping plate effect in modifying agent flusher, what modifying agent flusher sprayed
Modifying agent at regular time and quantity be sprayed at magnesium hydroxide surface；
(5) after magnesium hydroxide is added to the volume of modified storehouse 3/4, stop hydrogenation magnesia, continue to add modifying agent at regular time and quantity, wait to change
Property agent be added to magnesium hydroxide quality 2%~5% after, stop add modifying agent, modified storehouse rotating technics are continued executing with, until technique
Perform.
9. the method for modifying of magnesium hydroxide according to claim 8, it is characterised in that：
The parameter of described modified storehouse rotating technics is as follows：
1) storehouse is modified by the startup of 500~1000rpm rotating speeds, and modifying agent flusher presses the startup of 300~500rpm of rotating speed rotating speeds, changes
Property storehouse and the equidirectional rotation of modifying agent flusher；The temperature setting in modified storehouse is at 100~250 DEG C, and modifying agent metering heating is defeated
The temperature setting of device is sent at 200~300 DEG C；
2) based on 0.5~1kg/h, the addition flow velocity of magnesium hydroxide is by based on 1~5kg/h for the addition flow velocity of modifying agent；
3) treat that magnesium hydroxide and modifying agent add post-modification storehouse and rotated by 1500~2000rpm of rotating speed, modifying agent flusher is pressed
500~800rpm of rotating speed rotates；Modified storehouse and the equidirectional rotation of modifying agent flusher, and with step 1) in direction it is identical；
Rotational time is 10~20 minutes；
4) 1500~2000rpm of rotating speed rotations are pressed in modified storehouse, and modifying agent flusher presses 500~800rpm of rotating speed rotations；It is modified
Storehouse and modifying agent flusher opposite direction rotate；Rotational time is 20-30 minutes.
10. the method for modifying of magnesium hydroxide according to claim 9, it is characterised in that：
Step 1) described in rotate to be and rotate in the direction of the clock；
Step 3) described in rotate to be and rotate in the direction of the clock；
Step 4) described in the direction of rotation in modified storehouse be counterclockwise；The direction of rotation of described modifying agent flusher is suitable
Hour hands.
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| CN201710037797.6A CN106752107B (en) | 2017-01-18 | 2017-01-18 | A kind of modified device and method of modifying of magnesium hydroxide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110551407A (en) * | 2018-05-31 | 2019-12-10 | 营口航盛科技实业有限责任公司 | High-coating-rate magnesium hydroxide modification method |
| CN114702840A (en) * | 2022-04-21 | 2022-07-05 | 深圳市海扬粉体科技有限公司 | Surface organic modified aluminum hydroxide powder and preparation method thereof |
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| CN104448941A (en) * | 2014-12-03 | 2015-03-25 | 中国科学院青海盐湖研究所 | Modification method of magnesium hydroxide |
| CN105856447A (en) * | 2016-05-13 | 2016-08-17 | 上海中化科技有限公司 | Inorganic filler and natural latex mixing equipment |
| CN106084290A (en) * | 2016-06-14 | 2016-11-09 | 安徽建筑大学 | Layered double-hydroxide anti-flaming smoke-inhibiting agent of silane coupler grafting polyphosphate ion intercalation and preparation method thereof |
| CN206396108U (en) * | 2017-01-18 | 2017-08-11 | 广州市合诚化学有限公司 | A kind of modified device of magnesium hydroxide |
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Patent Citations (4)
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| CN104448941A (en) * | 2014-12-03 | 2015-03-25 | 中国科学院青海盐湖研究所 | Modification method of magnesium hydroxide |
| CN105856447A (en) * | 2016-05-13 | 2016-08-17 | 上海中化科技有限公司 | Inorganic filler and natural latex mixing equipment |
| CN106084290A (en) * | 2016-06-14 | 2016-11-09 | 安徽建筑大学 | Layered double-hydroxide anti-flaming smoke-inhibiting agent of silane coupler grafting polyphosphate ion intercalation and preparation method thereof |
| CN206396108U (en) * | 2017-01-18 | 2017-08-11 | 广州市合诚化学有限公司 | A kind of modified device of magnesium hydroxide |
Cited By (3)
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| CN110551407A (en) * | 2018-05-31 | 2019-12-10 | 营口航盛科技实业有限责任公司 | High-coating-rate magnesium hydroxide modification method |
| CN110551407B (en) * | 2018-05-31 | 2021-06-08 | 营口航盛科技实业有限责任公司 | High-coating-rate magnesium hydroxide modification method |
| CN114702840A (en) * | 2022-04-21 | 2022-07-05 | 深圳市海扬粉体科技有限公司 | Surface organic modified aluminum hydroxide powder and preparation method thereof |
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| CN106752107B (en) | 2018-07-31 |
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