CN110172255A - A kind of anti-flaming smoke-inhibiting agent, flame-retardant smoke inhibition pitch and preparation method thereof - Google Patents
A kind of anti-flaming smoke-inhibiting agent, flame-retardant smoke inhibition pitch and preparation method thereof Download PDFInfo
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- CN110172255A CN110172255A CN201910370341.0A CN201910370341A CN110172255A CN 110172255 A CN110172255 A CN 110172255A CN 201910370341 A CN201910370341 A CN 201910370341A CN 110172255 A CN110172255 A CN 110172255A
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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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
- 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
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
- C08L2201/02—Flame or fire retardant/resistant
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Abstract
The invention discloses a kind of anti-flaming smoke-inhibiting agents, flame-retardant smoke inhibition pitch and preparation method thereof, toward the anti-flaming smoke-inhibiting agent of addition asphalt content 10% in matrix pitch by the way of mixing outside, by aluminium hydroxide, magnesium hydroxide, encapsulated red phosphorus and expanded graphite composition.First using high-speed stirred instrument stirring pitch and flame-retardant smoke inhibition agent composition 5 ~ 10 minutes, reuses high speed shearing emulsification instrument and shear 15 ~ 30 minutes, finally reuse high-speed stirred instrument and be stirred 2 ~ 5min, can be prepared by flame-retardant smoke inhibition pitch.The present invention has the advantages such as preparation process is simple, easily operated, low in cost, and preparation formula of the invention can effectively prevent the burning of pitch at high temperature, and inhibiting the generation of pernicious gas, flame-retardant smoke inhibition pitch obtained can be used for preparing asphalt and for the making of tunnel road surface, maintenance and maintenance etc. in road engineering.
Description
Technical field
The present invention relates to a kind of anti-flaming smoke-inhibiting agents, flame-retardant smoke inhibition pitch and preparation method thereof, belong to road new material technology
Field.
Background technique
Pitch be it is a kind of be widely used in the building fields such as road, bridge and house by macromolecule hydro carbons and non-hydrocarbons
The complex mixture of composition, it includes element be mainly carbon and hydrogen, in addition there are also a small amount of sulphur, nitrogen, oxygen atoms and micro
Sodium, nickel, iron, magnesium, calcium etc..With the expansion of highway in China, transport development scale, vcehicular tunnel quantity and mileage number also by
Cumulative to add, still, Vehicle Speed is fast in tunnel, vehicle flowrate is big, light is weak, visibility is relatively low, therefore vehicle in tunnel
It breaks down, knock into the back, spontaneous combustion, tunnel fire hazard risk is higher caused by the reasons such as gasoline leakage.Once fire, pitch occurs
The burning on road surface can discharge amount of heat and poison gas in a short time, and staff in tunnel escape is difficult, rescue, evacuate, go out
The difficulty such as fire are much larger than common road, and safety of life and property is by great threat.Since the driving that bituminous pavement has is relaxed
The advantages that suitable, short construction period, maintenance are conveniently, noise is small, antiskid performance is good, long tunnel highway pavement still mostly uses pitch at present
Road surface.The pitch of bituminous pavement has inflammable characteristic under fire, and can releaseCO、CO 2 、SO 2 、NO、NO 2 、CH 4 Deng more
Kind of gas, so that trapped people is probably due to poisoning or be choked to death is died in tunnel.Therefore, flame-retardant smoke inhibition is pointedly designed
Agent can fundamentally reduce the casualties occurred due to tunnel fire hazard.
In order to prevent or pitch be delayed to burn in tunnel, modifying agent, i.e. anti-flaming smoke-inhibiting agent are usually added in engineering,
Modified pitch is made.Fire retardant is to be mainly used for fire-retardant synthesis for preventing material from being ignited and inhibit the auxiliary agent of flame propagation
And natural macromolecular material.Material containing fire retardant is more difficult to ignite, and can inhibit flame propagation, prevents small fire from developing into
High fire reduces fire hazard, facilitates the use of various product safeties.Smoke suppressant is that one kind is able to suppress various polymer materials
The compound of smoke amount in combustion passes through special chemically and physically effect, under conditions of a small amount of use, Neng Gouming
The various finishing materials such as the aobvious various polymer materials such as timber, plastics, rubber, pitch and insulating foam of reduction and construction material exist
Smoke density and smoke amount in combustion process, properly increase the anti-flammability of these materials.
In existing anti-flaming smoke-inhibiting agent, such as common aluminium hydroxide, magnesium hydroxide, though there is certain flame-retardant smoke inhibition effect
Fruit, but need to be added a large amount of aluminium hydroxide and magnesium hydroxide can be only achieved ideal effect.And for halogenated flame retardant, burning
When can release a large amount of cigarette and toxic, corrosive gas, therefore used ground frequency it is also lower and lower.Therefore, one kind is developed
The flame-retardant smoke inhibition pitch of environment-friendly type is urgent problem to be solved now.
Summary of the invention
Technical problem: after burning in tunnel, bituminous pavement will burn and discharge pernicious gas, and existing resistance
Combustion pitch realizes flame retardant effect mainly by addition fire retardant, but the smoke-suppressing of some fire retardants is poor, and when burning generates big
Amount has cigarette, poisonous gas, can generate larger harm to human body and environment, increase escape difficulty, while flame retardant effect is poor, this
Invention is directed to these defects, provides a kind of anti-flaming smoke-inhibiting agent, flame-retardant smoke inhibition pitch and preparation method thereof.
Technical solution: a kind of anti-flaming smoke-inhibiting agent, the anti-flaming smoke-inhibiting agent by aluminium hydroxide, magnesium hydroxide, encapsulated red phosphorus and
Expanded graphite composition, wherein the sum of the aluminium hydroxide and the dosage of magnesium hydroxide account for the 80% of anti-flaming smoke-inhibiting agent gross mass, wherein
The dosage of aluminium hydroxide accounts for the 45-50% of anti-flaming smoke-inhibiting agent gross mass；The mass ratio of the encapsulated red phosphorus and expanded graphite be 2.7 ~
3.3:1。
A kind of flame-retardant smoke inhibition pitch, the flame-retardant smoke inhibition pitch include pitch and anti-flaming smoke-inhibiting agent described in claim 1.
Above-mentioned flame-retardant smoke inhibition pitch, the flame-retardant smoke inhibition pitch include pitch and anti-flaming smoke-inhibiting agent described in claim 1,
In the anti-flaming smoke-inhibiting agents of 10 mass parts is added in every 100 mass parts pitch.
The preparation method of above-mentioned flame-retardant smoke inhibition pitch, is added flame-retardant smoke inhibition by the way of mixing outside into matrix pitch
Then agent is mixed uniformly using high-speed stirred instrument, reuse high speed shearing emulsification instrument and shear 15 ~ 30 minutes, when shearing
The temperature for controlling matrix pitch is in 130-140 DEG C, finally reuses high-speed stirred instrument and stirs evenly, resistance can be prepared
Combustion suppression cigarette pitch.
Above-mentioned anti-flaming smoke-inhibiting agent makes its water content lower than 1% using preceding drying.
Above-mentioned expanded graphite-encapsulated red phosphorus-magnesium hydroxide-aluminium hydroxide sequence of pressing is successively by each group of anti-flaming smoke-inhibiting agent
At being added in matrix pitch,
Matrix pitch when above-mentioned addition anti-flaming smoke-inhibiting agent is the pitch in 130-140 DEG C of temperature.
It is above-mentioned anti-flaming smoke-inhibiting agent is added in pitch after, stirred using high-speed stirred instrument with the speed of 2000r/min
It is uniformly distributed in pitch to anti-flaming smoke-inhibiting agent.
For above-mentioned high speed shearing emulsification instrument first with low speed 1000r/min shearing 5 ~ 10 minutes, rear promoted arrives high speed 3000r/min
Shearing 5 ~ 10 minutes, after be down to again low speed 1000r/min shear 5 ~ 10 minutes.
High-speed stirred instrument is stirred 2 ~ 5 minutes after above-mentioned shearing with the speed of 3000/min.
The utility model has the advantages that compared to other existing asphalt flame-retardant agent, preparation process of the invention is simple, easily operated, cost
It is cheap, it can effectively prevent or delay the burning of pitch at high temperature, and effectively reduce the release of pernicious gas, thus method
Flame-retardant smoke inhibition pitch obtained can be used for the purposes such as tunnel road surface making, maintenance, maintenance.
Specific embodiment
Embodiment 1
A kind of preparation method of flame-retardant smoke inhibition pitch takes the 70# matrix pitch 1kg for meeting specification, is heated to 135oC, will be fire-retardant
Keep its water content low after smoke suppressant (expanded graphite, encapsulated red phosphorus, magnesium hydroxide and aluminium hydroxide) is 6 hours dry at 105 DEG C
In 1%, (added in this order with the sequence of 5g expanded graphite -15g encapsulated red phosphorus -32g magnesium hydroxide -48g aluminium hydroxide
Add, can be evenly distributed, to avoid material clumps, be unevenly distributed within a short period of time) it is added in pitch, use high speed
It stirs instrument to stir 8 minutes with the speed of 2000r/min, so that anti-flaming smoke-inhibiting agent is uniformly distributed in pitch, then using high speed
Emulsification pretreatment instrument shears pitch and flame-retardant smoke inhibition agent composition, and first low speed is sheared 10 minutes with the speed of 1000r/min, rear to be promoted
Sheared 8 minutes to high speed 3000r/min, after be down to low speed 1000r/min again and shear 5 minutes, keep pitch to heat again when shearing
140 are under equipmentoC.Finally, the composite flame-proof suppression cigarette pitch completed by the shearing of high speed shearing emulsification instrument is reused high-speed stirring
It mixes instrument and 5min is stirred with the speed of 3000r/min, can be prepared by flame-retardant smoke inhibition pitch.
Embodiment 2
A kind of preparation method of flame-retardant smoke inhibition pitch takes the 70# matrix pitch 1kg for meeting specification, is heated to 135oC, will be fire-retardant
Keep its water content low after smoke suppressant (expanded graphite, encapsulated red phosphorus, magnesium hydroxide and aluminium hydroxide) is 6 hours dry at 105 DEG C
In 1%, pitch is added to the sequence of 5g expanded graphite -15g encapsulated red phosphorus -35g magnesium hydroxide -45g aluminium hydroxide
In, it is stirred 6 minutes using high-speed stirred instrument with the speed of 2000r/min, so that anti-flaming smoke-inhibiting agent is uniformly distributed in pitch, is connect
Using high speed shearing emulsification instrument shearing pitch and flame-retardant smoke inhibition agent composition, first low speed shears 8 points with the speed of 1000r/min
Clock, rear promoted to high speed 3000r/min are sheared 10 minutes, after be down to low speed 1000r/min again and shear 5 minutes, when shearing, keeps
Pitch temperature under warming-up device is in 130oC.Finally, again by the flame-retardant smoke inhibition pitch completed by the shearing of high speed shearing emulsification instrument
3min is stirred with the speed of 3000r/min using high-speed stirred instrument, can be prepared by flame-retardant smoke inhibition pitch.
Embodiment 3
A kind of preparation method of flame-retardant smoke inhibition pitch takes the 70# matrix pitch 1kg for meeting specification, is heated to 135oC, will be fire-retardant
Keep its water content low after smoke suppressant (expanded graphite, encapsulated red phosphorus, magnesium hydroxide and aluminium hydroxide) is 6 hours dry at 105 DEG C
In 1%, pitch is added to the sequence of 5g expanded graphite -15g encapsulated red phosphorus -64g magnesium hydroxide -16g aluminium hydroxide
In, it is stirred 8 minutes using high-speed stirred instrument with the speed of 2000r/min, so that anti-flaming smoke-inhibiting agent is uniformly distributed in pitch, is connect
Using high speed shearing emulsification instrument shearing pitch and flame-retardant smoke inhibition agent composition, first low speed shears 10 with the speed of 1000r/min
Minute, rear promoted to high speed 3000r/min is sheared 8 minutes, after be down to low speed 1000r/min again and shear 5 minutes, when shearing, keeps
Pitch is in 140 under warming-up device againoC.Finally, again by the composite flame-proof suppression cigarette pitch completed by the shearing of high speed shearing emulsification instrument
5min is stirred with the speed of 3000r/min using high-speed stirred instrument, can be prepared by flame-retardant smoke inhibition pitch.
Embodiment 4
A kind of preparation method of flame-retardant smoke inhibition pitch takes the 70# matrix pitch 1kg for meeting specification, is heated to 135oC, will be fire-retardant
Keep its water content low after smoke suppressant (expanded graphite, encapsulated red phosphorus, magnesium hydroxide and aluminium hydroxide) is 6 hours dry at 105 DEG C
In 1%, pitch is added to the sequence of 5g expanded graphite -15g encapsulated red phosphorus -48g magnesium hydroxide -32g aluminium hydroxide
In, it is stirred 8 minutes using high-speed stirred instrument with the speed of 2000r/min, so that anti-flaming smoke-inhibiting agent is uniformly distributed in pitch, is connect
Using high speed shearing emulsification instrument shearing pitch and flame-retardant smoke inhibition agent composition, first low speed shears 10 with the speed of 1000r/min
Minute, rear promoted to high speed 3000r/min is sheared 8 minutes, after be down to low speed 1000r/min again and shear 5 minutes, when shearing, keeps
Pitch is in 140 under warming-up device againoC.Finally, again by the composite flame-proof suppression cigarette pitch completed by the shearing of high speed shearing emulsification instrument
5min is stirred with the speed of 3000r/min using high-speed stirred instrument, can be prepared by flame-retardant smoke inhibition pitch.
Embodiment 5
A kind of preparation method of flame-retardant smoke inhibition pitch takes the 70# matrix pitch 1kg for meeting specification, is heated to 135oC, will be fire-retardant
Keep its water content low after smoke suppressant (expanded graphite, encapsulated red phosphorus, magnesium hydroxide and aluminium hydroxide) is 6 hours dry at 105 DEG C
In 1%, pitch is added to the sequence of 5g expanded graphite -15g encapsulated red phosphorus -16g magnesium hydroxide -64g aluminium hydroxide
In, it is stirred 8 minutes using high-speed stirred instrument with the speed of 2000r/min, so that anti-flaming smoke-inhibiting agent is uniformly distributed in pitch, is connect
Using high speed shearing emulsification instrument shearing pitch and flame-retardant smoke inhibition agent composition, first low speed shears 10 with the speed of 1000r/min
Minute, rear promoted to high speed 3000r/min is sheared 8 minutes, after be down to low speed 1000r/min again and shear 5 minutes, when shearing, keeps
Pitch is in 140 under warming-up device againoC.Finally, again by the composite flame-proof suppression cigarette pitch completed by the shearing of high speed shearing emulsification instrument
5min is stirred with the speed of 3000r/min using high-speed stirred instrument, can be prepared by flame-retardant smoke inhibition pitch.
Embodiment 6
Pitch is made in comparative example 1-6(difference anti-flaming smoke-inhibiting agent) and embodiment 1,3-5 progress flame retardant property of asphaltum test, compounding
The quality of fire retardant is the 10% of the gross mass of pitch.Comparative example is different in addition to the composition of anti-flaming smoke-inhibiting agent, other steps and reality
It is identical to apply example 1.Each testing program anti-flaming smoke-inhibiting agent composition such as the following table 1.
The composition (percentage composition %) of each anti-flaming smoke-inhibiting agent in the test of 1 asphalt flame-retardant of table
| Test number | Aluminium hydroxide | Magnesium hydroxide | Expanded graphite | Encapsulated red phosphorus |
| Comparative example 1 | 0 | 100 | 0 | 0 |
| Comparative example 2 | 20 | 80 | 0 | 0 |
| Comparative example 3 | 40 | 60 | 0 | 0 |
| Comparative example 4 | 60 | 40 | 0 | 0 |
| Comparative example 5 | 80 | 20 | 0 | 0 |
| Comparative example 6 | 100 | 0 | 0 | 0 |
| Embodiment 3 | 16 | 64 | 5 | 15 |
| Embodiment 4 | 32 | 48 | 5 | 15 |
| Embodiment 1 | 48 | 32 | 5 | 15 |
| Embodiment 5 | 64 | 16 | 5 | 15 |
Pass through thermogravimetric analysis (Thermo Gravimetric Analysis, abbreviation TG or TGA) and mass spectral analysis (Mass
Spectrometer, abbreviation MS) joint technology tests above-mentioned each test, available material thermal decomposition or burning
The variation of Shi Zhiliang；It is also possible to the type and content for the gas that each moment discharges during monitoring this.
The 409 type thermogravimetric analysis of NETZSCH STA that thermogravimetric analyzer (TG) and mass spectrometer (MS) are produced using Germany
Instrument and NETZSCH QMS 403C mass spectrometer.Before test, prepares the sample that quality standard is 10 ± 2 mg, sample is put intoAl 2 O 3 In crucible, by the way of covering bundle hole.Test uses atmosphere for simulated air: purge gass 1 areN 2 , flow 40mL/
min；Purge gass 2 areO 2 , flow 10mL/min；Protection gas beN 2 , flow 20mL/min.Using 10K/min, 15K/min,
Tri- heating rates of 20K/min, each heating rate at least carry out parallel test twice, guarantee the accuracy of result.When test
Connecting tube temperature between thermogravimetric analyzer and mass spectrometer remains 220oC is constant, and mass spectrometer scan pattern is
Ion scan, every 105s run-down.
Test result such as following table 2-4:
Table 2 compound flame retardant flame retardant effect thermogravimetric (TG) tracing analysis (percentage composition %)
| Test number | Aluminium hydroxide | Magnesium hydroxide | Expanded graphite | Encapsulated red phosphorus | Residual qualities percentage (%) |
| Comparative example 1 | 0 | 100 | 0 | 0 | 14 |
| Comparative example 2 | 20 | 80 | 0 | 0 | 16 |
| Comparative example 3 | 40 | 60 | 0 | 0 | 15 |
| Comparative example 4 | 60 | 40 | 0 | 0 | 20 |
| Comparative example 5 | 80 | 20 | 0 | 0 | 12 |
| Comparative example 6 | 100 | 0 | 0 | 0 | 17 |
| Embodiment 3 | 16 | 64 | 5 | 15 | 17 |
| Embodiment 4 | 32 | 48 | 5 | 15 | 19 |
| Embodiment 1 | 48 | 32 | 5 | 15 | 23 |
| Embodiment 5 | 64 | 16 | 5 | 15 | 19 |
According to 2 result of table it is found that the (aluminium hydroxide 48% of embodiment 1；Magnesium hydroxide 32%；Encapsulated red phosphorus 5%；Expanded graphite
15%) the remaining mass percent of mixture is maximum in, i.e., remaining asphalt quality is maximum, this shows the asphalitine burnt
Amount is minimum, compares the residual qualities percentage in other cases, and the suppression cigarette formula of composite flame-proof employed in embodiment 1 can produce
Raw optimal flame-retardant smoke inhibition effect.
The analysis of 3 compound flame retardant flame retardant effect thermogravimetric curve of table
| Test number | Maximum heat weight loss rate (%/min.) | Thermal weight loss speed attenuation rate (%) |
| Comparative example 1 | -7.9 | 13.4 |
| Comparative example 2 | -7.9 | 13.4 |
| Comparative example 3 | -8.0 | 12.3 |
| Comparative example 4 | -7.4 | 18.9 |
| Comparative example 5 | -7.9 | 13.4 |
| Comparative example 6 | -7.8 | 14.5 |
| Embodiment 3 | -7.8 | 14.5 |
| Embodiment 4 | -7.5 | 17.8 |
| Embodiment 1 | -7.2 | 21.1 |
| Embodiment 5 | -7.8 | 14.5 |
According to table 3, the maximum heat weight loss rate of mixture is minimum in embodiment 1, shows the mixture in embodiment 1 in height
The lower loss that can farthest delay quality of temperature, meanwhile, the thermal weight loss speed attenuation rate of embodiment 1 be in all cases most
Big, it is 21.1%, this illustrates the maximum that mass loss rate declines under high temperature action of the mixture in embodiment 1, in other words
Say, the Mass lost of the mixture in embodiment 1 it is most slow.Due to having the smallest maximum heat weight loss rate and maximum simultaneously
Heat speed attenuation rate always, the flame-retardant smoke inhibition agent prescription in embodiment 1 can generate best flame-retardant smoke inhibition effect.
In addition, also can be carried out analysis comparison to activation in addition to thermogravimetric and thermal weight loss:
The analysis of 4 compound flame retardant flame retardant effect activation energy of table
| Test number | Activation energy (kJ/mol) | Activation energy growth rate (%) |
| Comparative example 1 | 117.12 | 5.17 |
| Comparative example 2 | 124.8 | 12.07 |
| Comparative example 3 | 126.72 | 13.79 |
| Comparative example 4 | 128.64 | 15.52 |
| Comparative example 5 | 120.96 | 8.62 |
| Comparative example 6 | 126.72 | 13.79 |
| Embodiment 3 | 124.8 | 12.07 |
| Embodiment 4 | 126.72 | 13.79 |
| Embodiment 1 | 132.48 | 18.97 |
| Embodiment 5 | 120.96 | 8.62 |
According to table 4, the activation energy of mixture is maximum in embodiment 1, and activation energy is the barrier that reaction occurs, and activation energy is got over
Greatly, react more difficult, reaction rate is slower, therefore the difficulty maximum of combustion reaction occurs for the mixture in embodiment 1.Together
When embodiment 1 in mixture activation energy growth rate it is also maximum, it means that on the basis of maximum activation energy, in embodiment 1 mix
It closes object activation energy increasing degree to be also the largest, therefore, the flame-retardant smoke inhibition effect of the anti-flaming smoke-inhibiting agent in embodiment 1 is all cases
It is best in example.
In conclusion flame retardant property difference is very big by the different anti-flaming smoke-inhibiting agents being re-dubbed that forms, and same group
Flame retardant effect at the different compositional flame-retardant smoke suppressant of, content also has very big difference, to above-mentioned each test using TG-MS combination examination
It tests, based on thermogravimetric (TG) and thermal weight loss (DTG) tracing analysis its flame retardant effect, wherein 1 anti-flaming smoke-inhibiting agent of embodiment is fire-retardant
Smoke suppressing effect is best, can effectively prevent or delay the burning of pitch at high temperature, and effectively reduce the release of pernicious gas,
Significantly larger than other embodiments and compositional flame-retardant smoke suppressant in the prior art.Thus flame-retardant smoke inhibition made from the method for the present invention drips
Blueness can be used for the purposes such as tunnel road surface making, maintenance, maintenance.
Claims (10)
1. a kind of anti-flaming smoke-inhibiting agent, it is characterised in that: the anti-flaming smoke-inhibiting agent by aluminium hydroxide, magnesium hydroxide, encapsulated red phosphorus and
Expanded graphite composition, wherein the sum of the aluminium hydroxide and the dosage of magnesium hydroxide account for the 80% of anti-flaming smoke-inhibiting agent gross mass, wherein
The dosage of aluminium hydroxide accounts for the 45-50% of anti-flaming smoke-inhibiting agent gross mass；The mass ratio of the encapsulated red phosphorus and expanded graphite be 2.7 ~
3.3:1。
2. a kind of flame-retardant smoke inhibition pitch, it is characterised in that: the flame-retardant smoke inhibition pitch includes pitch and described in claim 1 fire-retardant
Smoke suppressant.
3. flame-retardant smoke inhibition pitch according to claim 2, it is characterised in that: the flame-retardant smoke inhibition pitch includes pitch and right
It is required that anti-flaming smoke-inhibiting agent described in 1, wherein the anti-flaming smoke-inhibiting agent of 10 mass parts is added in every 100 mass parts pitch.
4. the preparation method of flame-retardant smoke inhibition pitch according to claim 3, it is characterised in that: toward base by the way of mixing outside
Anti-flaming smoke-inhibiting agent is added in matter pitch, is then mixed uniformly using high-speed stirred instrument, reuses high speed shearing emulsification instrument
Shearing 15 ~ 30 minutes, the temperature of control matrix pitch is in 130-140 DEG C when shearing, finally reuses high-speed stirred instrument and stirs
It mixes uniformly, flame-retardant smoke inhibition pitch can be prepared.
5. the preparation method of flame-retardant smoke inhibition pitch according to claim 4, it is characterised in that: the anti-flaming smoke-inhibiting agent makes
Make its water content lower than 1% with preceding drying.
6. the preparation method of flame-retardant smoke inhibition pitch according to claim 4, it is characterised in that: red by expanded graphite-cladding
The each composition of anti-flaming smoke-inhibiting agent is successively added in matrix pitch by phosphorus-magnesium hydroxide-aluminium hydroxide sequence.
7. the preparation method of flame-retardant smoke inhibition pitch according to claim 4, it is characterised in that: when addition anti-flaming smoke-inhibiting agent
Matrix pitch is the pitch in 130-140 DEG C of temperature.
8. the preparation method of flame-retardant smoke inhibition pitch according to claim 4, it is characterised in that: anti-flaming smoke-inhibiting agent to be added to
After in pitch, is stirred with the speed of 2000r/min to anti-flaming smoke-inhibiting agent and be uniformly distributed in pitch using high-speed stirred instrument.
9. the preparation method of flame-retardant smoke inhibition pitch according to claim 4, it is characterised in that: high speed shearing emulsification instrument first with
Low speed 1000r/min is sheared 5 ~ 10 minutes, and rear promoted to high speed 3000r/min is sheared 5 ~ 10 minutes, after be down to low speed again
1000r/min is sheared 5 ~ 10 minutes.
10. the preparation method of flame-retardant smoke inhibition pitch according to claim 4, it is characterised in that: high-speed stirred after shearing
Instrument is stirred 2 ~ 5 minutes with the speed of 3000/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004591A (en) * | 2021-03-05 | 2021-06-22 | 亚罗斯建材（江苏）有限公司 | Low-smoke and low-odor rubber plastic material for ships and preparation method thereof |
| CN114112782A (en) * | 2021-11-12 | 2022-03-01 | 武汉理工大学 | Method for evaluating influence degree of different flame retardants on asphalt flame-retardant and smoke-suppression effect |
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| CN114112782A (en) * | 2021-11-12 | 2022-03-01 | 武汉理工大学 | Method for evaluating influence degree of different flame retardants on asphalt flame-retardant and smoke-suppression effect |
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