CN103146208A - Expanded vermiculite/aluminium hydroxide synergetic flame retardant asphalt and preparation method thereof - Google Patents
Expanded vermiculite/aluminium hydroxide synergetic flame retardant asphalt and preparation method thereof Download PDFInfo
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- CN103146208A CN103146208A CN2013100901003A CN201310090100A CN103146208A CN 103146208 A CN103146208 A CN 103146208A CN 2013100901003 A CN2013100901003 A CN 2013100901003A CN 201310090100 A CN201310090100 A CN 201310090100A CN 103146208 A CN103146208 A CN 103146208A
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Abstract
The invention relates to an expanded vermiculite/aluminium hydroxide synergetic flame retardant asphalt and a preparation method thereof. The expanded vermiculite/aluminium hydroxide synergetic flame retardant asphalt is composed of 65-90 parts by weight of asphalt, 5-15 parts by weight of expanded vermiculite and 5-20 parts by weight of aluminium hydroxide. The expanded vermiculite/aluminium hydroxide synergetic flame retardant asphalt is characterized in that the flame retardant property of the asphalt is improved by means of the synergistic effect of the expanded vermiculite and the aluminium hydroxide, and compared with the single use of the aluminium hydroxide flame retardant agent, the flame retardant property of the expanded vermiculite/aluminium hydroxide synergetic flame retardant asphalt is obviously improved and the cost is greatly reduced.
Description
Technical field
The present invention relates to a kind of expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch and preparation method thereof.
Background technology
Pitch is a kind of important material of construction, in road construction and roof waterproof field, obtains applying more and more widely.Particularly, over nearly 20 years, bituminous concrete pavement sliding resistance, planarization, sound absorbing and the easy maintenance good with it substantially replaced cement concrete pavement in China's expressway construction.Be accompanied by building in a large number of high-grade highway, the vcehicular tunnel quantity that the bituminous concrete of take is road surface is also more and more, and along with vcehicular tunnel to growing up future development, and the increasing of road speed and density, the danger of the tunnel fire hazard accident that makes a variety of causes such as spontaneous combustion of the mutual shock of vehicle in tunnel, goods cause is the trend of rising.Because pitch belongs to macromolecular material, mainly by carbon, hydrogen, formed, there is inflammable characteristic, once the tunnel presence of fire, bituminous pavement is being understood to fight and is being produced thick smoke, the difficulty that spreads and increase the personnel escape of aggravation fire, and cause pavement damage.Bituminous material for roof waterproof, exist too because house catches fire, and cause the asphalt base waterproofing material burning, makes propagation of flame, the problem that enlarges fire losses and cause casualties.Therefore, in order to reduce the harm of fire, for the pitch of tunnel road surface and house waterproof, should there is good flame retardant resistance.
In order to improve flame retardant property of asphaltum, method commonly used is to add fire retardant in pitch.Chinese invention patent CN 1569963A discloses a kind of preparation method of Fire-retardant modified asphaltum mixture, and the raising of modified asphalt mixture flame retardant resistance is by adding the hydrate of 2 ~ 30% halogen flames, 1 ~ 10% nitrogen heterocyclic ring thing fire retardant and 10 ~ 20% metal oxides.The disclosed Fire-retardant modified asphaltum mixture of Chinese invention patent CN 1580129A is the flame retardant properties that the smoke suppressant by adding 2 ~ 30% halogen flames, 2 ~ 4% inorganic phosphor-contained compounds and 10 ~ 20% improves pitch.In these flame-retardant pitchs or its compound, all used halogen flame.Yet, because halogen flame is mainly to generate hydrogen halide or metal halide is brought into play fire retardation by reaction, that these compounds have also increased simultaneously is poisonous in the fire, the growing amount of covering property and corrosive gases, human health is formed safely to significant threat, and increased rescuer's work difficulty.Nearly ten years, about halogen flame and products of combustion thereof have caused the extensive concern of international community on the impact of human health and environment, as disabled as pentabromodiphenyl oxide, octabromodiphenyl ether at some halogen flames of developed country.In the last few years, along with the enhancing of people's environmental consciousness, Non-halogen Flame Retardant Technology research was very active.The disclosed a kind of Halogenless fire retarded polymer modified asphalt of Chinese invention patent CN1861689A is to improve the flame retardant properties of pitch by adding the halogen-free flame retardants be composited by phosphorus flame retardant and nitrogenated flame retardant.Japan Asahi Rekisei company has released difficult combustion asphalt mixture patent, selects the fire retardant such as aluminium hydroxide to improve the flame retardant properties of pitch.That aluminium hydroxide fire retardant has is fire-retardant, smoke elimination, the advantage such as harmless, be called as nuisanceless fire retardant, but its shortcoming is just can play good flame retardant effect under higher volume, cause the cost of aluminium hydroxide flame-retardant pitch higher, and the performance to pitch has considerable influence, limited its application in bituminous material.
The present invention works in coordination with expanded vermiculite and aluminium hydroxide for improving the flame retardant properties of pitch, utilize the moisture of aluminium hydroxide decomposes can absorb amount of heat on the one hand, reduce the temperature of pitch, suppress heat volatilization and the thermolysis of pitch, produce a large amount of water vapour simultaneously, dilution inflammable gas concentration, reach the fire-retardant effect of gas phase; Utilize on the other hand expanded vermiculite being subject under heat effect, expand to form has heat insulation, every the sheet barrier layer of matter function, stop the propagation of flame, heat and oxygen, and intercept the water vapour volatilization of pitch thermal decomposition product and aluminium hydroxide release, reach the fire-retardant effect of solid phase.The present invention, by the synergy of expanded vermiculite/aluminium hydroxide, makes flame retardant property of asphaltum obtain remarkable improvement, can greatly reduce the consumption of aluminium hydroxide, reduces the cost of flame-retardant pitch.
Summary of the invention
The object of the present invention is to provide that a kind of cost is low, the expanded vermiculite of Environmental Safety/aluminium hydroxide cooperative flame retardant pitch and preparation method thereof.
To achieve these goals, technical scheme of the present invention is: a kind of expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch is characterized in that it is comprised of pitch, expanded vermiculite, aluminium hydroxide; The shared mass fraction of each raw material is: 65 ~ 90 parts of pitches; 5 ~ 15 parts of expanded vermiculites; 5 ~ 20 parts, aluminium hydroxide.
Described pitch is matrix pitch or polymer modified asphalt.
Described matrix pitch is that softening temperature is 45～55 ℃, and 25 ℃ of penetration degrees are greater than 40 dmm.
Described polymer modified asphalt is styrene-butadiene-styrene three inlay section thermal plastic elastic body modifying asphalts, and softening temperature is 55～75 ℃, and 5 ℃ of ductilities are greater than 30 cm.
The fineness of described expanded vermiculite is 200 ~ 400 orders.
The fineness of described aluminium hydroxide is 325 orders.
The preparation method of described a kind of expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch is characterized in that carrying out as follows:
(1) by the shared mass fraction of each raw material, be: 65 ~ 90 parts of pitches; 5 ~ 15 parts of expanded vermiculites; 5 ~ 20 parts, aluminium hydroxide, choose pitch, expanded vermiculite, aluminium hydroxide, standby;
(2) asphalt heating to 150 ~ 180 ℃ are made it in molten state;
(3) add expanded vermiculite, aluminium hydroxide in pitch, with the rotating speeds of 1000 rev/mins, stir 15min, make each component mix, can make expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch.
Beneficial effect of the present invention is as follows:
(1) aluminium hydroxide fire retardant has fire-retardant, smoke elimination, the advantage such as harmless, but it must just can play good flame retardant effect under higher volume.The present invention is by working in coordination with expanded vermiculite and aluminium hydroxide for improving the flame retardant properties of pitch, the moisture decomposed while utilizing aluminium hydroxide to be heated can absorb amount of heat, reduce the temperature of pitch, suppress heat volatilization and the thermolysis of pitch, produce a large amount of water vapour simultaneously, dilution inflammable gas concentration, reach the fire-retardant effect of gas phase; Utilize expanded vermiculite when being subject to heat effect simultaneously, expand to form and there is sheet barrier layer heat insulation, the trapping function, stop the propagation of flame, heat and oxygen, and intercept the water vapour volatilization of pitch thermal decomposition product and aluminium hydroxide release, reach the fire-retardant effect of solid phase.
(2) the present invention utilizes expanded vermiculite/aluminium hydroxide to act synergistically to improve the flame retardant properties of pitch, with independent use aluminium hydroxide fire retardant, compares, and the flame retardant properties of expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch is significantly increased.Can greatly reduce the consumption of aluminium hydroxide, and the price of expanded vermiculite is far below aluminium hydroxide, the cost of flame-retardant pitch significantly reduces.
(3) Environmental Safety.
Embodiment
In order to understand better the present invention, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1
By mass parts, by 77.5 parts of matrix pitches (47 ℃ of softening temperatures, 25 ℃ of penetration degree 71dmm) be heated to 155 ℃, adding 7.5 parts of fineness is that 300 purpose expanded vermiculites and 15 parts of fineness are 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch (abbreviation flame-retardant pitch).According to " asphalt combustion performance is measured---oxygen index method " and (NB/SH/T 0815-2010) industry standard (following examples flame-retardant pitch oxygen index is tested all according to this standard code method) test, the oxygen index of this flame-retardant pitch is 26.8, illustrate that this flame-retardant pitch flame retardant properties is good, cost is low, Environmental Safety.
Simultaneous test:
By mass parts, 77.5 parts of matrix pitches (47 ℃ of softening temperatures, 25 ℃ of penetration degree 71dmm) are heated to 155 ℃, adding 22.5 parts of fineness is 325 purpose aluminium hydroxides, with the rotating speeds of 1000 rev/mins, stirs 15min, makes its blend even, makes flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 23.2.
Embodiment 2
By mass parts, 88 parts of matrix pitches (46 ℃ of softening temperatures, 25 ℃ of penetration degree 88dmm) are heated to 150 ℃, adding 6 parts of fineness is that 200 purpose expanded vermiculites and 6 parts of fineness are 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 23.8.
Simultaneous test:
By mass parts, 88 parts of matrix pitches (46 ℃ of softening temperatures, 25 ℃ of penetration degree 88dmm) are heated to 150 ℃, adding 12 parts of fineness is 325 purpose aluminium hydroxides, with the rotating speeds of 1000 rev/mins, stirs 15min, makes its blend even, makes flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 22.1.
Embodiment 3
By mass parts, by 70 parts of matrix pitches (49 ℃ of softening temperatures, 25 ℃ of penetration degree 65dmm) be heated to 160 ℃, adding 10 parts of fineness is that 300 purpose expanded vermiculites and 20 parts of fineness are 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 28.3.
Simultaneous test:
By mass parts, 70 parts of matrix pitches (49 ℃ of softening temperatures, 25 ℃ of penetration degree 65dmm) are heated to 160 ℃, adding 30 parts of fineness is 325 purpose aluminium hydroxides, with the rotating speeds of 1000 rev/mins, stirs 15min, makes its blend even, makes flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 24.6.
Embodiment 4
By mass parts, by 82 parts of styrene-butadiene-styrenes, three inlay section thermal plastic elastic body modifying asphalts (70 ℃ of softening temperatures, 5 ℃ of ductility 38cm) be heated to 175 ℃, adding 8 parts of fineness is that 200 purpose expanded vermiculites and 10 parts of fineness are 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make fire-retardant modified asphalt.The oxygen index of testing this fire-retardant modified asphalt is 24.6.
Simultaneous test:
By mass parts, by 82 parts of styrene-butadiene-styrenes, three inlay section thermal plastic elastic body modifying asphalts (70 ℃ of softening temperatures, 5 ℃ of ductility 38 cm) be heated to 175 ℃, adding 18 parts of fineness is 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make fire-retardant modified asphalt.The oxygen index of testing this fire-retardant modified asphalt is 23.
Embodiment 5
By mass parts, by 68 parts of styrene-butadiene-styrenes, three inlay section thermal plastic elastic body modifying asphalts (65 ℃ of softening temperatures, 5 ℃ of ductility 42 cm) be heated to 170 ℃, adding 13 parts of fineness is that 400 purpose expanded vermiculites and 19 parts of fineness are 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make fire-retardant modified asphalt.The oxygen index of testing this fire-retardant modified asphalt is 28.2.
Simultaneous test:
By mass parts, by 68 parts of styrene-butadiene-styrenes, three inlay section thermal plastic elastic body modifying asphalts (65 ℃ of softening temperatures, 5 ℃ of ductility 42 cm) be heated to 170 ℃, adding 32 parts of fineness is 325 purpose aluminium hydroxides, stir 15min with the rotating speeds of 1000 rev/mins, make its blend even, make fire-retardant modified asphalt.The oxygen index of testing this fire-retardant modified asphalt is 25.
Embodiment 6
The preparation method of a kind of expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch, the step comprised is as follows:
1) mass parts by each raw material is: 65 parts of matrix pitches (55 ℃ of softening temperatures, 25 ℃ of penetration degree 41 dmm), and 15 parts of expanded vermiculites (200 order), 20 parts, aluminium hydroxide (325 order), choose pitch, expanded vermiculite and aluminium hydroxide, standby;
2) asphalt heating to 150 ℃ is made it in molten state;
3) add expanded vermiculite and aluminium hydroxide in pitch, with the rotating speeds of 1000 rev/mins, stir 15min, make each component mix, can make expanded vermiculite/aluminium hydroxide flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 28.4.
Embodiment 7
The preparation method of a kind of expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch, the step comprised is as follows:
1) mass parts by each raw material is: styrene-butadiene-styrene three inlay section thermal plastic elastic body modifying asphalts (75 ℃ of softening temperatures, 5 ℃ of ductility 31cm) 90 parts, 5 parts of expanded vermiculites (400 order), 5 parts, aluminium hydroxide (325 order), choose pitch, expanded vermiculite and aluminium hydroxide, standby;
2) asphalt heating to 180 ℃ is made it in molten state;
3) add expanded vermiculite, aluminium hydroxide in pitch, with the rotating speeds of 1000 rev/mins, stir 15min, make each component mix, can make expanded vermiculite/aluminium hydroxide flame-retardant pitch.The oxygen index of testing this flame-retardant pitch is 23.6
.
Each raw material that the present invention is cited, and the bound of each raw material of the present invention, interval value, can realize the present invention, at this, do not enumerate embodiment.
Claims (7)
1. expanded vermiculite/aluminium hydroxide cooperative flame retardant pitch, is characterized in that it is comprised of pitch, expanded vermiculite, aluminium hydroxide; The shared mass fraction of each raw material is: 65 ~ 90 parts of pitches; 5 ~ 15 parts of expanded vermiculites; 5 ~ 20 parts, aluminium hydroxide.
2. a kind of expanded vermiculite according to claim 1/aluminium hydroxide cooperative flame retardant pitch, it is characterized in that: described pitch is matrix pitch or polymer modified asphalt.
3. a kind of expanded vermiculite according to claim 2/aluminium hydroxide cooperative flame retardant pitch, it is characterized in that: described matrix pitch is that softening temperature is 45～55 ℃, and 25 ℃ of penetration degrees are greater than 40 dmm.
4. a kind of expanded vermiculite according to claim 2/aluminium hydroxide cooperative flame retardant pitch, it is characterized in that: described polymer modified asphalt is styrene-butadiene-styrene three inlay section thermal plastic elastic body modifying asphalts, softening temperature is 55～75 ℃, and 5 ℃ of ductilities are greater than 30 cm.
5. a kind of expanded vermiculite according to claim 1/aluminium hydroxide cooperative flame retardant pitch, it is characterized in that: the fineness of described expanded vermiculite is 200 ~ 400 orders.
6. a kind of expanded vermiculite according to claim 1/aluminium hydroxide cooperative flame retardant pitch, it is characterized in that: the fineness of described aluminium hydroxide is 325 orders.
7. the preparation method of a kind of expanded vermiculite as claimed in claim 1/aluminium hydroxide cooperative flame retardant pitch is characterized in that carrying out as follows:
(1) by the shared mass fraction of each raw material, be: 65 ~ 90 parts of pitches; 5 ~ 15 parts of expanded vermiculites; 5 ~ 20 parts, aluminium hydroxide, choose pitch, expanded vermiculite, aluminium hydroxide, standby;
(2) asphalt heating to 150 ~ 180 ℃ are made it in molten state;
(3) add expanded vermiculite, aluminium hydroxide in pitch, with the rotating speeds of 1000 rev/mins, stir 15min, make each component mix, can make expanded vermiculite/aluminium hydroxide flame-retardant pitch.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385176A (en) * | 2015-12-10 | 2016-03-09 | 华南理工大学 | Expanded vermiculite/waste rubber powder composite modified asphalt material and preparation method thereof |
| CN107285666A (en) * | 2017-07-04 | 2017-10-24 | 中国路桥工程有限责任公司 | Inorganic fire-retarded modified pitch and its preparation technology |
| CN108977079A (en) * | 2018-08-16 | 2018-12-11 | 马鞍山市永固防水科技有限公司 | A method of roof insulating water-proof pad bituminous coating is prepared with organo montmorillonite-aluminium hydroxide flame-retardant is modified |
| CN113524827A (en) * | 2021-07-02 | 2021-10-22 | 宁波科莱希新材料有限公司 | Asphalt coiled material |
| CN114836048A (en) * | 2021-12-22 | 2022-08-02 | 重庆交通大学 | Halloysite nanotube synergistic flame-retardant modified asphalt and preparation method thereof |
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| CN1775865A (en) * | 2005-12-13 | 2006-05-24 | 武汉理工大学 | Laminated silicate clay nano modified alphalt and its preparing method |
| EP2151473A1 (en) * | 2007-04-18 | 2010-02-10 | Morikawa Shoten Co., Ltd. | Flame retardant agent for thermoplastic resin, flame retardant thermoplastic resin |
| CN101696336A (en) * | 2009-10-23 | 2010-04-21 | 东华大学 | Novel environment-friendly heat insulating coating and preparation method thereof |
| CN102604396A (en) * | 2012-02-13 | 2012-07-25 | 长安大学 | Synergic flame retardance asphalt material and preparation method thereof |
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2013
- 2013-03-20 CN CN2013100901003A patent/CN103146208A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775865A (en) * | 2005-12-13 | 2006-05-24 | 武汉理工大学 | Laminated silicate clay nano modified alphalt and its preparing method |
| EP2151473A1 (en) * | 2007-04-18 | 2010-02-10 | Morikawa Shoten Co., Ltd. | Flame retardant agent for thermoplastic resin, flame retardant thermoplastic resin |
| CN101696336A (en) * | 2009-10-23 | 2010-04-21 | 东华大学 | Novel environment-friendly heat insulating coating and preparation method thereof |
| CN102604396A (en) * | 2012-02-13 | 2012-07-25 | 长安大学 | Synergic flame retardance asphalt material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385176A (en) * | 2015-12-10 | 2016-03-09 | 华南理工大学 | Expanded vermiculite/waste rubber powder composite modified asphalt material and preparation method thereof |
| CN107285666A (en) * | 2017-07-04 | 2017-10-24 | 中国路桥工程有限责任公司 | Inorganic fire-retarded modified pitch and its preparation technology |
| CN107285666B (en) * | 2017-07-04 | 2019-09-17 | 中国路桥工程有限责任公司 | Inorganic fire-retarded modified pitch and its preparation process |
| CN108977079A (en) * | 2018-08-16 | 2018-12-11 | 马鞍山市永固防水科技有限公司 | A method of roof insulating water-proof pad bituminous coating is prepared with organo montmorillonite-aluminium hydroxide flame-retardant is modified |
| CN113524827A (en) * | 2021-07-02 | 2021-10-22 | 宁波科莱希新材料有限公司 | Asphalt coiled material |
| CN114836048A (en) * | 2021-12-22 | 2022-08-02 | 重庆交通大学 | Halloysite nanotube synergistic flame-retardant modified asphalt and preparation method thereof |
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Application publication date: 20130612 |