CN101024727A - Fire-retardant modified asphalt material and preparing method - Google Patents
Fire-retardant modified asphalt material and preparing method Download PDFInfo
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- CN101024727A CN101024727A CN 200610054093 CN200610054093A CN101024727A CN 101024727 A CN101024727 A CN 101024727A CN 200610054093 CN200610054093 CN 200610054093 CN 200610054093 A CN200610054093 A CN 200610054093A CN 101024727 A CN101024727 A CN 101024727A
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Abstract
The invention relates to a inflaming retarding modification pitch material that includes ground substance pitch, rubber modification agent and inflaming retarding modification agent. It adopts high speed shear mixing emulsion machine to make inflaming retarding modification pitch material that includes the following steps: dehydrating for 30min at 110 degree centigrade, heating to 175 degree centigrade, adding SBS, cutting for 10min, and adding inflaming modification agent and cutting for 5min. The invention has the advantages of high temperature stability, low temperature crack resistance, good covering ability to stone, and good anti-aging and excellent inflaming retarding ability.
Description
One, technical field
The present invention relates to a kind of fire-retardant modified asphalt material, a kind of advanced road fire-retardant modified asphalt material that the tunnel is used and preparation method especially are provided.
Two, background technology
Along with China's Freeway Development, the quantity of vcehicular tunnel also constantly increases, but paving still mainly is confined to cement concrete in the present tunnel.Domestic and international many studies show that, cement concrete has been difficult to satisfy the requirement of modern tunnel road surface, and bituminous concrete will become the main flow of tunnel road surface development gradually.According to the working conditions in the tunnel, the water stability that how to improve bituminous flame retardant resistance and compound thereof becomes the gordian technique of this subject study.But, still do not have the pertinent literature report at present both at home and abroad.Bituminous is formed extremely complicated, it is generally acknowledged that pitch is made up of bituminous matter, colloid, aromatic hydrocarbon and four components of stable hydrocarbon.Therefore, pitch comes down to the extremely complicated macromolecule mixture of a kind of composition.Because the macromolecular material flame-retarded technology has now developed into the science of a comparative maturity, so we use for reference the successful experience that flame-retarded technology is used in field of polymer technology, try hard to this technology is applied to asphalt flame-retardant.The pitch good flame retardant property enough significantly reduces the loss that traffic accident brings.
Fire-retardant modified asphalt is applicable to that mainly bituminous pavement is mated formation in the tunnel.The bituminous concrete of mating formation in the tunnel, pavement skid resistance and comfortableness are improved significantly.In case but traffic accident takes place in the tunnel, but with regard to fire hazard, the pitch of the surface layer of mating formation participates in burning, produce a large amount of dense smoke, bring very big difficulty for rescue work and personnel escape, can cause more serious loss, many tunnel traffic accidents had taken place in highway circle both at home and abroad, suffered heavy losses.Take place in the tunnel under the situation of traffic accident, in order to reduce the loss of traffic accident, the bituminous pavement employing fire-retardant modified asphalt of mating formation is very important in the tunnel in.A lot of both at home and abroad about the research of asphalt modification, but yet there are no report about the research of asphalt flame-retardant aspect at present.Common modifying asphalt can improve concrete over-all properties, but powerless for improving pitch and concrete flame retardant resistance.Therefore, for improving the security that bituminous pavement is mated formation in the tunnel important theoretical meaning and engineering significance are arranged.
Patent of invention 95117026.0 once disclosed a kind of asphalt felt that is used for roof waterproof, and it is to add fire retardants such as phosphoric acid ammonia and magnesium hydroxide in pitch, does not also use aspect road.
Patent of invention 92105725.3 also once disclosed a kind of pitch, malthoid of not firing, it is to add Chemicals such as sodium bicarbonate to improve its flame retardant resistance in pitch, but loses flame retardant effect the flame retardant resistance of this malthoid is reduced greatly owing to sodium bicarbonate at high temperature very easily decomposes.It mainly is to be used for general waterproofing work, and does not also use aspect mating formation at tunnel road surface.
Patent of invention 03143945.4 also discloses a kind of antiflaming asphalt mixture about using in the tunnel, and its production technique mainly is to add brominated flame retardant and metal oxide in pitch.Because brominated flame retardant belongs to highly toxic substance, clearly be defined in a lot of fields in the world and forbid or limit the use of; And metal oxide and bituminous consistency are very poor, and segregation influences asphalt quality easily.
Three, summary of the invention
Thinking of the present invention is that fire-retardant modified asphalt material is applied in the bituminous concrete that tunnel road surface mats formation, thereby can improve the flame retardant properties of tunnel sheet pavement, improves the security performance of tunnel operation greatly.This fire-retardant modified asphalt material manufacture craft is simple, does not need to add other main equipment, and cost is low, and is workable.
The purpose of this invention is to provide a kind of fire-retardant modified asphalt material and preparation method thereof with flame retardant resistance.
The present invention is achieved through the following channels: a kind of fire-retardant modified asphalt material that is used for tunnel pavement, and the mass component of its composition is:
Fire-retardant modified asphalt: 100 parts of matrix pitches
3～7 parts of rubber modifiers
3 parts～10 parts of flame-proof modifiers
Flame-proof modifier: 100 parts of inorganic aluminium flame retardants
5～20 parts of silicone flame retardants
3～8 parts of coupling agents
3～8 parts of photostabilizers
The present invention, described matrix pitch is common heavy friendship 70# or 90# pitch.
The present invention, described rubber modifier is styrene-butadiene-styrene block polymer, i.e. SBS.Its effect is high-temperature behavior and the low-temperature performance that improves fire-retardant modified asphalt material.
The present invention, described fire retardant is that inorganic aluminium flame retardant is 1000 purpose aluminium hydroxide powders and silicone flame retardant silicone resin SFR-100.Its effect is the effect that improves the flame retardant properties of fire-retardant modified asphalt material and reduce combustion fumes in the pitch combustion processes.
The present invention, described coupling agent is the higher silane resin acceptor kh-550 of a kind of activity.Its effect is the surfactivity that improves inorganic aluminium flame retardant and silicone flame retardant, thereby improves the chemical bond power between flame-proof modifier and the matrix pitch.
The present invention, described photostabilizer is liquid salol.Its effect is the ageing resistance that improves fire-retardant modified asphalt material.
The preparation method of fire-retardant modified asphalt material, be made up of following step:
Step 1: inorganic aluminium flame retardant aluminium hydroxide powder is placed reactor, and heating and constant temperature to 20～40 ℃ are opened and are stirred, and add silicone flame retardant silicone resin SFR-100 again, build lid, at the uniform velocity stir 10～20 minutes;
Step 2: open reactor, add coupling agent silane KH-550 and photostabilizer salol more successively, build lid, continue to stir 15～30 minutes, be warming up to 60～80 ℃, constant temperature 2～5 hours stops heating, naturally cooling;
Step 3: when treating that temperature is reduced to below 30 ℃, open reactor, product is packed, promptly formed flame-proof modifier;
Step 4: earlier the mode of the matrix pitch in the pitch hold tank by the heating of circulation heated oil is warming up to 110 ℃ and constant temperature and dewatered in 20～50 minutes, continue to be warmed up to 165～195 ℃;
Step 5: the pitch after will heating up imports in the colloidal mill of asphalt modification equipment high speed shear Mixingemulsificationmachine, adds rubber modifier SBS, opens colloidal mill, shears 5～20 minutes;
Step 6: again flame-proof modifier is joined in the colloidal mill of asphalt modification equipment high speed shear Mixingemulsificationmachine, open colloidal mill, sheared 2～10 minutes, make fire-retardant modified asphalt material.
Fire-retardant modified asphalt material of the present invention has advantages such as good flame resistance, high temperature performance be good.Building stones special-purpose batching plant by asphalt production under 160～180 ℃ temperature condition according to certain bitumen aggregate ratio and certain grating mixes and stirs the formation Fire-retardant modified asphaltum mixture, can directly be paved on the tunnel roadbed of handling well, roll with street roller commonly used again and promptly form flame-retardant modified tunnel sheet pavement.Compare with the plain asphalt road surface, this fire-retardant modified asphalt road surface has very good flame retardant resistance, has improved the security of tunnel sheet pavement greatly.
Four, embodiment
Below by a concrete embodiment the present invention is specifically described.
Embodiment
(1) takes by weighing raw material by following proportioning
Fire-retardant modified asphalt: 100 parts of matrix pitches
5 parts of rubber modifiers
6 parts of flame-proof modifiers
Flame-proof modifier: 100 parts of inorganic aluminium flame retardant aluminium hydroxide powders
12 parts of silicone flame retardant SFR-100
5 parts of coupling agent silane KH-550
6 parts of photostabilizer salols
(2) preparation technology
Step 1: inorganic aluminium flame retardant aluminium hydroxide powder is placed reactor, and heating and constant temperature to 30 ℃ are opened and are stirred, and add silicone flame retardant silicone resin SFR-100 again, build lid, at the uniform velocity stir 15 minutes;
Step 2: open reactor, add coupling agent silane KH-550 and photostabilizer salol more successively, build lid, continue to stir 20 minutes, be warming up to 70 ℃, constant temperature 4 hours stops heating, naturally cooling;
Step 3: when treating that temperature is reduced to below 30 ℃, open reactor, product is packed, promptly formed flame-proof modifier;
Step 4: earlier the mode of the matrix pitch in the pitch hold tank by the heating of circulation heated oil is warming up to 110 ℃ and constant temperature and dewatered in 35 minutes, continue to be warmed up to 185 ℃;
Step 5: the pitch after will heating up imports in the colloidal mill of asphalt modification equipment high speed shear Mixingemulsificationmachine, adds rubber modifier SBS, opens colloidal mill, shears 10 minutes;
Step 6: again flame-proof modifier is joined in the colloidal mill of asphalt modification equipment high speed shear Mixingemulsificationmachine, open colloidal mill, sheared 5 minutes, make fire-retardant modified asphalt material.
(3) result's test
By the method for simultaneous test, compared the performance of common modified asphalt material and fire-retardant modified asphalt material.It is worthy of note that the difference of common modified asphalt material described herein and fire-retardant modified asphalt material is that the former does not add flame-proof modifier and the latter has added 6 parts of flame-proof modifiers, other material prescription and manufacture craft are identical.Now the The performance test results of these two kinds of materials is listed in table 1.
The performance of common modified asphalt material of table 1 and fire-retardant modified asphalt material relatively
| Technical indicator | Common modified asphalt material | Fire-retardant modified asphalt material |
| 15 ℃ of penetration degrees, 0.1mm | 21.6 | 18.5 |
| 25 ℃ of penetration degrees, 0.1mm | 47.5 | 37.4 |
| 30 ℃ of penetration degrees, 0.1mm | 64.1 | 51.1 |
| Penetrative index PI | 1.7 | 2.1 |
| Softening temperature, ℃ | 92.0 | 90.2 |
| Oxygen index | 19 | 31 |
| Ductility (5 ℃), mm | 36 | 25.1 |
| 25 ℃ of recovery of elasticity, % | 90.2 | 91.0 |
| Flash-point, ℃ | 298 | 300 |
| Residue behind the RTFOT | ||
| Mass loss, % | 0.12 | 0.08 |
| Penetration ratio, % | 75.0 | 74.5 |
| Ductility (5 ℃), mm | 22 | 21 |
From above test result as can be seen, except that the oxygen index of weighing the good and bad index of flame retardant resistance has the obvious increase than common modified asphalt material, other technical indicator of fire-retardant modified asphalt material and common modified asphalt material are all approaching substantially, show that fire-retardant modified asphalt material not only has good high and low temperature performance and ageing resistance, and have good flame retardant resistance, be fit to tunnel pavement.
Claims (8)
1. a fire-retardant modified asphalt material comprises matrix pitch, rubber modifier and flame-proof modifier composition, it is characterized in that the mass component of forming is:
Fire-retardant modified asphalt: 100 parts of matrix pitches
3～7 parts of rubber modifiers
3 parts～10 parts of flame-proof modifiers
Flame-proof modifier: 100 parts of inorganic aluminium flame retardants
5～20 parts of silicone flame retardants
3～8 parts of coupling agents
3～8 parts of photostabilizers
2. according to the described a kind of fire-retardant modified asphalt material of claim 1, it is characterized in that: described matrix pitch is common heavy friendship 70# or 90# pitch.
3. according to the described a kind of fire-retardant modified asphalt material of claim 1, it is characterized in that: described rubber modifier is styrene-butadiene-styrene block polymer, i.e. SBS.
4. according to the described fire-retardant modified asphalt material of claim 1, it is characterized in that: described inorganic aluminium flame retardant is 1000 purpose aluminium-hydroxide powders.
5. according to the described fire-retardant modified asphalt material of claim 1, it is characterized in that: described silicone flame retardant is silicone resin SFR-100.
6. according to the described a kind of fire-retardant modified asphalt material of claim 1, it is characterized in that: described coupling agent is a silane resin acceptor kh-550.
7. according to the described fire-retardant modified asphalt material of claim 1, it is characterized in that: described photostabilizer is a salol.
8. the preparation method of a fire-retardant modified asphalt material is characterized in that being made up of following step:
Step 1: inorganic aluminium flame retardant aluminium hydroxide powder is placed reactor, and heating and constant temperature to 20～40 ℃ are opened and are stirred, and add silicone flame retardant silicone resin SFR-100 again, build lid, at the uniform velocity stir 10～20 minutes;
Step 2: open reactor, add coupling agent silane KH-550 and photostabilizer salol more successively, build lid, continue to stir 15～30 minutes, be warming up to 60～80 ℃, constant temperature 2～5 hours stops heating, naturally cooling;
Step 3: when treating that temperature is reduced to below 30 ℃, open reactor, product is packed, promptly formed flame-proof modifier;
Step 4: earlier the mode of the matrix pitch in the pitch hold tank by the heating of circulation heated oil is warming up to 110 ℃ and constant temperature and dewatered in 20～50 minutes, continue to be warmed up to 165～195 ℃;
Step 5: the pitch after will heating up imports in the colloidal mill of asphalt modification equipment high speed shear Mixingemulsificationmachine, adds rubber modifier SBS, opens colloidal mill, shears 5～20 minutes;
Step 6: again flame-proof modifier is joined in the colloidal mill of asphalt modification equipment high speed shear Mixingemulsificationmachine, open colloidal mill, sheared 2～10 minutes, make fire-retardant modified asphalt material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100540931A CN100535055C (en) | 2006-02-22 | 2006-02-22 | Fire-retardant modified asphalt material and preparing method |
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| CNB2006100540931A CN100535055C (en) | 2006-02-22 | 2006-02-22 | Fire-retardant modified asphalt material and preparing method |
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| CN101024727A true CN101024727A (en) | 2007-08-29 |
| CN100535055C CN100535055C (en) | 2009-09-02 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100586891C (en) * | 2008-04-07 | 2010-02-03 | 同济大学 | Road cement concrete rubber particle surface modifier |
| CN102532921A (en) * | 2010-12-31 | 2012-07-04 | 安通建设有限公司 | Efficient and flame-retardant modified asphalt and preparation process thereof |
| CN102942795A (en) * | 2012-12-03 | 2013-02-27 | 中国路桥工程有限责任公司 | Novel high-performance cooperative system flame retarding asphalt |
| CN103232189A (en) * | 2013-05-13 | 2013-08-07 | 东南大学 | Pavement material and pavement method for flame-retardant stone chips skid-resisting super overlay |
| CN103554931A (en) * | 2013-10-17 | 2014-02-05 | 王朝辉 | Modified asphalt with hot-mix emission reduction and flame-retardant smoke suppression functions |
| CN103773040A (en) * | 2014-01-27 | 2014-05-07 | 长安大学 | Composite modified asphalt and preparation method thereof |
| CN105150666A (en) * | 2015-09-15 | 2015-12-16 | 安庆越球建筑防水材料有限公司 | Manufacturing technology for modified asphalt waterproof coiled material |
| CN106519716A (en) * | 2015-12-14 | 2017-03-22 | 广饶金王石化有限公司 | Preparation method of SBS-modified epoxy resin asphalt material |
| CN106519979A (en) * | 2016-11-09 | 2017-03-22 | 天津市京建建筑防水工程有限公司 | Environment-friendly flame-resistant high polymer SBS modified asphalt water-emulsion-type waterproof coating |
| CN108892958A (en) * | 2018-07-24 | 2018-11-27 | 郭跃 | A kind of preparation method of fire-retardant modified asphalt |
| CN109749335A (en) * | 2018-12-19 | 2019-05-14 | 青岛科凯达橡塑有限公司 | A kind of flame-retardant pitch modifying agent and preparation method thereof |
| CN112920457A (en) * | 2021-01-25 | 2021-06-08 | 贵州中路交通技术有限公司 | High-modulus asphalt flame retardant |
| CN112980206A (en) * | 2021-02-23 | 2021-06-18 | 毛佳耀 | Flame-retardant wear-resistant foamed asphalt and preparation method thereof |
| CN113604065A (en) * | 2021-08-31 | 2021-11-05 | 苏州科技大学 | Low-carbon emission modified asphalt |
| CN115124853A (en) * | 2022-07-07 | 2022-09-30 | 广东雄辉市政公用工程有限公司 | Preparation process of flame-retardant modified asphalt |
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2006
- 2006-02-22 CN CNB2006100540931A patent/CN100535055C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100586891C (en) * | 2008-04-07 | 2010-02-03 | 同济大学 | Road cement concrete rubber particle surface modifier |
| CN102532921A (en) * | 2010-12-31 | 2012-07-04 | 安通建设有限公司 | Efficient and flame-retardant modified asphalt and preparation process thereof |
| CN102532921B (en) * | 2010-12-31 | 2014-04-02 | 安通建设有限公司 | Efficient and flame-retardant modified asphalt and preparation process thereof |
| CN102942795A (en) * | 2012-12-03 | 2013-02-27 | 中国路桥工程有限责任公司 | Novel high-performance cooperative system flame retarding asphalt |
| CN103232189A (en) * | 2013-05-13 | 2013-08-07 | 东南大学 | Pavement material and pavement method for flame-retardant stone chips skid-resisting super overlay |
| CN103554931A (en) * | 2013-10-17 | 2014-02-05 | 王朝辉 | Modified asphalt with hot-mix emission reduction and flame-retardant smoke suppression functions |
| CN103554931B (en) * | 2013-10-17 | 2016-04-27 | 王朝辉 | A kind of have the modifying asphalt that heat mixes reduction of discharging and flame-retardant smoke inhibition effect |
| CN103773040A (en) * | 2014-01-27 | 2014-05-07 | 长安大学 | Composite modified asphalt and preparation method thereof |
| CN103773040B (en) * | 2014-01-27 | 2015-08-05 | 长安大学 | A kind of composite modified asphalt and preparation method thereof |
| CN105150666A (en) * | 2015-09-15 | 2015-12-16 | 安庆越球建筑防水材料有限公司 | Manufacturing technology for modified asphalt waterproof coiled material |
| CN106519716A (en) * | 2015-12-14 | 2017-03-22 | 广饶金王石化有限公司 | Preparation method of SBS-modified epoxy resin asphalt material |
| CN106519979A (en) * | 2016-11-09 | 2017-03-22 | 天津市京建建筑防水工程有限公司 | Environment-friendly flame-resistant high polymer SBS modified asphalt water-emulsion-type waterproof coating |
| CN108892958A (en) * | 2018-07-24 | 2018-11-27 | 郭跃 | A kind of preparation method of fire-retardant modified asphalt |
| CN109749335A (en) * | 2018-12-19 | 2019-05-14 | 青岛科凯达橡塑有限公司 | A kind of flame-retardant pitch modifying agent and preparation method thereof |
| CN109749335B (en) * | 2018-12-19 | 2021-06-22 | 青岛科凯达橡塑有限公司 | Flame-retardant asphalt modifier and preparation method thereof |
| CN112920457A (en) * | 2021-01-25 | 2021-06-08 | 贵州中路交通技术有限公司 | High-modulus asphalt flame retardant |
| CN112980206A (en) * | 2021-02-23 | 2021-06-18 | 毛佳耀 | Flame-retardant wear-resistant foamed asphalt and preparation method thereof |
| CN113604065A (en) * | 2021-08-31 | 2021-11-05 | 苏州科技大学 | Low-carbon emission modified asphalt |
| CN115124853A (en) * | 2022-07-07 | 2022-09-30 | 广东雄辉市政公用工程有限公司 | Preparation process of flame-retardant modified asphalt |
| CN115124853B (en) * | 2022-07-07 | 2023-10-20 | 广东雄辉市政公用工程有限公司 | Reaction kettle for producing flame-retardant modified asphalt and preparation process |
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| CN100535055C (en) | 2009-09-02 |
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