CN1396213A - Polymer emulsified and re-cross-linked asphalt colloid mixture and its preparing process - Google Patents
Polymer emulsified and re-cross-linked asphalt colloid mixture and its preparing process Download PDFInfo
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Abstract
A polymer and emulsified recrosslinked asphalt mixed colloid contains polymer as modifier, disperser, stabilizer, recrosslinked asphalt, emulsifier and water, and can be used for road pavement. Its advantages are simple preparing process and excellent performance.
Description
Technical field the present invention relates to a kind of emulsified bitumen colloid mixture, particularly relates to a kind of polymer emulsified and re-cross-linked asphalt colloid mixture (hereinafter to be referred as colloid mixture) and preparation method thereof.
Technical background
The history that use petroleum pitch is built the road for a long time, people make pitch solid-state under the normal temperature become liquid state by the method for heating, so that with the mineral aggregate mix, but the heated bitumen construction has many drawbacks, not only need a large amount of heat energy, and contaminate environment, harmful to human, along with science and technology development, produced use technology under the pitch cold conditions---the emulsified asphalt slurry seal technology.So-called slurry seal, exactly bitumen production being become under the normal temperature is liquid material, becomes thin pulp to pave on the road surface through special equipment one rare oar seal paver with the mineral aggregate mix of selection.Its convenient, fast construction, economy have good pavement performance, greatly satisfied extensive, fast, the needs of preventative Road maintenance engineering.Interfacial chemistry and development of Colloid Chemistry, promoted the raising with performance quality of increasing of emulsifying agent, properties-correcting agent kind, widened the range of application of emulsified bitumen, and make its fast development, through splitting slow hardening common emulsified asphalt slurry seal slowly, developed into the fast type emulsified asphalt slurry seal that coagulates at present, and in road field, the world, be considered to the repairing road rut and other multiple pavement diseases are the most effective, one of most economical means, development is rapidly.
Emulsified asphalt slurry seal in the past, employed pitch is ordinary road petroleum pitch, and penetration degree is bigger, and softening temperature is on the low side.Employed emulsifying agent is generally to overflow and splits slow hardening type emulsifying agent, and as wooden amine, the mineral aggregate that is adopted also is common mineral aggregate, curing molding is slow, the open to traffic time is longer, is generally 4-6 hour, and this can only adapt on the road surface of inferior grade roads such as, underloading low at vehicle flowrate.
Present general emulsified asphalt slurry seal, the matrix pitch of selecting is a heavy-duty road asphalt, penetration degree is on the low side, softening temperature is higher, the emulsifying agent that is adopted is generally and splits the fast type emulsifying agent that coagulates slowly, and mineral aggregate can be selected according to the Pavement Design grade, and duration of mixing was greater than 2 minutes, presetting period can be in 20 minutes, and 60 minutes can open to traffic.But can only on the middle grade road surface, use.
Along with the increase day by day of traffic flow, traffic density is big, and vehicle maximizes, and the heavy duty overload is serious, speed of a motor vehicle height, and the loading action time is short, and density increases fast, and the requirement of these road pavement is more and more higher.The protobitumen road surface is to natural cause sensitivities such as temperature, rainwater, sunshines, its supporting capacity with prevent water damage, the disease ability is relative on the low side.High temperature season the carbuncle bag occurs and passes, and the aging water logging bubble that reaches peels off during rainy season, and the severe cold area day and night temperature is big, ground low temperature reflective crack and freeze thawing phenomenon occur, and these cause pavement performance to descend, and quicken the road surface and damage.Therefore people add polymkeric substance in pitch, and bituminous material is improved.
The technological process of production of polymer modification emulsified bitumen generally has three kinds:
First kind: the polymer modification material is added in the pitch, and with asphalt modification, and then with its emulsification, this method preparation process needs more equipment, time and manpower, and modifying asphalt viscosity is big, flow difficulties, and it is many to consume heat energy, causes environmental pollution and cost to increase.
Second kind: prepare emulsified bitumen earlier and mix the method for joining latex then.
This method has two operations, and promptly asphalt emulsification and colloid mix.Because pitch particle and latex mix under stirring in that machinery is powerful, and density difference is arranged, anti-reduction of speed degree difference is very big to the homogeneity and the stability influence of modified emulsifying asphalt, can separate during storage, phenomenons such as precipitation, caking, and effect is undesirable.
The third method is: in material modified adding emulsifier aqueous solution, enter mulser simultaneously with pitch then, carry out emulsification.
This technology is mixed with the aqueous solution with emulsifying agent, properties-correcting agent and additive and enters mulser simultaneously with the pitch that melts of heat and prepare emulsified bitumen.But different with processing method for selected prescription, product performance improve to some extent, but performance quality is very unstable, the cost difference is very big, and needs the additive acids to adjust pH value between 2-2.5, and is very big to the emulsified bitumen performance impact, etching apparatus causes environmental pollution.
Summary of the invention
The objective of the invention is to overcome the many disadvantages in the above emulsified bitumen preparation, through contriver's years of researches and practice exploitation provide a kind of preparation simple, reliably, excellent performance stable polymer emulsified and re-cross-linked asphalt colloid mixture.
Another object of the present invention is to provide a kind of preparation method of polymer emulsified and re-cross-linked asphalt colloid mixture.
A kind of polymer emulsified and re-cross-linked asphalt colloid mixture provided by the invention comprises that following component and component weight ratio form through mixing, emulsification, glue mill:
Modifier polymer 1.5-4.5 weight part
Dispersion agent 0.5-1.5 weight part
Stablizer 0.5-2.0 weight part
Heavy traffic paving asphalt 55-70 weight part
Emulsifying agent 1.0-2.5 weight part
Water 41.5-19.5 weight part
A kind of polymer emulsified and re-cross-linked asphalt colloid mixture provided by the invention preferably includes following component and component weight ratio:
Modifier polymer 2.0-4.0 weight part
Dispersion agent 1.0-1.5 weight part
Stablizer 1.0-2.0 weight part
Heavy traffic paving asphalt 55-65 weight part
Emulsifying agent 1.5-2.0 weight part
Water 25.5-39.5 weight part
In a kind of polymer emulsified and re-cross-linked asphalt colloid mixture provided by the invention, described emulsifying agent is cationic emulsifier such as amides, imidazolines and alkylamidoalkyl polyamines class, RH-C05 (amides for example, the production and sales of Shanxi chemical research institute), MK series (production and sales of Jiangyin City seven-star auxiliary agent company), KX-I type cation asphalt emulgent, the highway department development and production of Jinhua, Zhejiang city are sold), MJ type (Henan Province Highway Administration Bureau and Shanxi-Prov Inst of Chemical Industry's joint research and development), QS-2 (production and sales of Wuhu Zhonglian Co.) etc.; Anionic emulsifier is the mixture such as the OP (Shanghai longitude and latitude company limited) of fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene; (production and sales of Yancheng, Henan Province dragon ease chemical company, mentioned emulsifier are and split the fast type emulsifying agent that coagulates slowly XLY2000, and these split slowly, and the fast type asphalt emulsification ability of coagulating is strong, and modified pitch emulsion does not lump, and does not precipitate, and emulsion is smooth, stable performance.These emulsifying agents can use separately, and the use that also can be mixed be mixed and be not strict with, but content is 1.5-2.5 (weight part) in polymer emulsified and re-cross-linked asphalt colloid mixture, is preferably the 1.5-2.0 weight part.
Described stablizer is: graftomer, alkylphenol polyoxyethylene class such as the cithrol of polyolefins compound such as Sha Suobide (SaSobit, Wuxi ten thousand chemical industry company limiteds of nation sell), organopolysiloxane and polyvalent alcohol, bentonite, attapulgite etc.; Be preferably graftomer, the cithrol of SaSobit, organopolysiloxane and polyvalent alcohol, these stablizers mainly play the gentle broken effect of thickening.Above stablizer market all can be buied.Its consumption 0.5-2.0 weight part is preferably the 1.0-2.0 weight part.
Described dispersion agent is; Naphthalene sulfonic acidformaldehyde condensation product, as: PD (auxiliary reagent factory, Shanghai); Naphthalenesulfonateformaldehyde formaldehyde condensation sodium salt (C
12H
14O
6S
2Na
2); Sodium methylene bis-naphthalene sulfonate NNO; Dispersing agent MF MF (C
22H
20O
6Na
2) etc., be preferably NNO, MF, (C
12H
14O
6S
2Na
2) n, these dispersion agents all have good diffusion and dissemination, and market all can be buied.Its consumption 0.5-1.5 weight part is preferably the 1.0-1.5 weight part.
Described modifier polymer is vinyl cyanide one divinyl, one styrene resin (ABS), ethene one vinyl acetate copolymer (EVA), polyethylene (PE), random (upright structure) polypropylene (APP), cis-1,4-polybutadiene rubber (BR), chloroprene rubber (CR), styrene-butadiene rubber(SBR) (SBR), styrene-butadiene one polystyrene ternary segmented copolymer (SBS) and their latex thereof etc., latex re-uses or commercially available latex products if the use polymkeric substance can be made with currently known methods.Optimization styrene one divinyl one polystyrene ternary segmented copolymer (SBS) latex and SBR latex.The common 1.5-4.5 weight part of described properties-correcting agent consumption is preferably the 2.0-4.0 weight part.
Described heavy traffic paving asphalt is the senior heavy-duty road asphalt of main material production processing with the high-grade low-freezing naphthenic base crude, has good characteristic, and wax content is lower than 2.0%, and density is greater than 1, and 15 ℃ of ductilities of TFOT (163 ℃, 5 hours) are greater than 140 centimetres.Heavy traffic paving asphalt is most important to slurry seal total quality influence, and the present invention adopts the high-quality heavy-duty road asphalt, for example by oil in the Jiangyin City emerging can the production and sales of pitch factory heavily friendship emerging can AH-70#, AH-90#, AH-100#; Its quality index is as shown in table 1, this shows that this heavy traffic paving asphalt has the fine road performance.
Table 1
| Heavy traffic paving asphalt | ????A | ????B | ????C | |
| ????AH-70# | ????AH-90# | ????AH-100# | ||
| Penetration degree | ?15℃ | ????32 | ????34 | ????36 |
| ?25℃ | ????78 | ????85 | ????98 | |
| ?30℃ | ????147 | ????151 | ????166 | |
| The PI value | ????-0.531 | ????-0.428 | ????-0.646 | |
| Softening temperature (ring and ball method) ℃ | ????47℃ | ????46℃ | ????45℃ | |
| Extensibility (15 ℃, 5cm/min) cm | ????152 | ????155 | ????168 | |
| The content of wax is measured % and is not more than | ????1.5 | ????1.8 | ????1.6 | |
| Flash-point (opening) ℃ is lower than for a short time | ????238 | ????265 | ????276 | |
| Density (25 ℃) g/cm | ????1.038 | ????1.041 | ????1.046 | |
| TFOT | ||||
| Mass loss | ????0.2 | ????0.1 | ????0.08 | |
| Penetration ratio % is not less than | ????78 | ????74 | ????72 | |
| Extensibility (15 ℃, 5cm/min) cm | ????＞140 | ????＞140 | ????＞140 | |
| Stable hydrocarbon % (weight) | ????10.35 | ????10.58 | ????10.20 | |
| Colloid % (weight) | ????26.8 | ????27.53 | ????27.66 | |
| Aromatic hydrocarbons % (weight) | ????51.47 | ????50.86 | ????50.87 | |
| Bituminous matter (weight) | ????11.20 | ????11.03 | ????11.27 | |
The preparation method of polymer emulsified and re-cross-linked asphalt colloid mixture provided by the invention comprises the following steps:
1, Jiang Shui, emulsifying agent, modifier polymer, dispersion agent, stablizer be by described weight ratio mixing and stirring in having stirred vessel, after be warming up to 50-70 ℃, preferred 55-60 ℃ is continued to stir.
2, heavy traffic paving asphalt is heated to 140-150 ℃ by described weight ratio, preferred 145 ℃ with step 1 evenly hot liquid add in the colloidal mill and grind, rotating speed is 2900-5500 rev/min, be preferably 3500 rev/mins of attrition process numbers minute, preferably less than 2 minutes polymer emulsified and re-cross-linked asphalt colloid mixture.
Colloid mixture of the present invention has good ageing resistance and high-temperature behavior.15 ℃ of ductilities of evaporation back colloid mixture are greater than 130 centimetres, softening temperature is greater than 65 ℃, after aging, 15 ℃ of ductilities are greater than 130 centimetres, softening temperature slightly raises, and the vaporization losses rangeability is little, and general polymerization thing Modified Slurry Sealing softening temperature requires to be not less than 60 ℃, by the colloid mixture softening temperature of the present invention preparation between 62-66 ℃, so can satisfy the service requirements of high temperature season fully.
Colloid mixture low-temperature performance of the present invention is good, 15 ℃ of ductilities are generally greater than 30 centimetres, and 5 ℃ of ductilities of matrix pitch are generally between 8-10 centimetre, and the brittle point of colloid mixture is below-18 ℃, and matrix pitch illustrates that the nonshrink ability of splitting of colloid mixture low temperature is better generally between-5-10 ℃.
Among the preparation method provided by the invention, owing to adopted properties-correcting agent directly to be added in the aqueous solution of emulsifying agent, production operation is simple and convenient, dependable performance, and also pollution-free, production cost is low.High temperature when having overcome the preparation modifying asphalt, high energy consumption, many equipment, expensive complex techniques process.
Do not add acid among the preparation method provided by the invention, overcome the harm that in producing emulsified bitumen, adds acid accent pH value (2-3) usually.Guarantee the ductility of emulsified bitumen, adhesion property does not reduce, and other performance also changes not quite, and equipment does not corrode, and environment does not pollute.
Because in the method provided by the invention, add alkylphenol polyoxyethylene class and polyolefins and add, the satisfactory stability emulsifying effectiveness is not only arranged, and slow broken function is arranged as agent, can will prolong the breakdown of emulsion time of emulsified bitumen, can satisfy the face of land at the construction requirement below 70 ℃ simultaneously.
The present invention uses naphthalenesulfonateformaldehyde formaldehyde mixture class dispersion agent, and good colloid dispersiveness is not only arranged, and latex is not precipitated, and does not assemble caking, and as stopping composition, the good short effect of coagulating is arranged, to improve the effect of fast open to traffic.
This colloid mixture can improve the high-temperature stability and the nonshrink ability of splitting of low temperature on road surface, strengthens antistripping and adhesion strength, and the road surface early strength is improved, and increases the service life.
Colloid mixture provided by the invention can be used as build the road on the big traffic in town and country, the high-grade road surface of heavy duty and Road maintenance in rare oar seal, also can make the seal cover on new road, and the wearing and tearing on original pitch (cement) road surface, aging, crack, multiple diseases such as smooth, loose can be repaired and improve to deck expansion joint stopping composition, tack coat, tunnel and aspect waterproof etc. rapidly.Improve waterproof, antiskid, smooth, the wear resisting property on road surface significantly.This product has the viscoelastic region of broad, ideal temperature-sensitive performance.The temperature-sensitive performance is the important indicator of reaction asphalt modification effect, and it utilizes the penetration degree of different temperature to carry out linear regression and obtains evaporation residue penetrative index PI value.Increase along with the polymkeric substance usage quantity, the slope of penetration degree temperature curve is that bituminous temperature temperature-sensitive index diminishes, the PI value increases, when polymkeric substance addition 〉=3%, and PI＞0.4542, thereby the temperature-sensitive effect of proof colloid mixture is remarkable, make colloid mixture penetration degree when low temperature become big, the colloid deliquescing, and temperature is when raising, penetration degree diminishes, the colloid hardening.Like this, the low temperature flexibility of compound and high temperature stiffness all are improved, thereby have improved the crack resistance at low-temperature and the high temperature rutting resistance on road surface.
Specific embodiments
The present invention is further described below in conjunction with practical example, but protection scope of the present invention is not limited to
Embodiment.
Embodiment 1
Get the clean water of 180 grams, in water, add and split fast emulsifying agent 10 grams that coagulate type (JWRH-MK type Shanghai longitude and latitude company limited) slowly, add polymkeric substance SBR latex 15 grams, after dispersion agent naphthalenesulfonateformaldehyde formaldehyde mixing sodium salt 5 grams, cithrol 7.5 grams stir, in temperature to 55 ℃, continue to stir and keep temperature.Get 282.5AH--704 heavy traffic paving asphalt A, be heated to 145 ℃, add in the colloidal mill together and grind, rotating speed is 3500 rev/mins, processes and just obtains the polymer emulsified and re-cross-linked asphalt colloid mixture that will prepare after two minutes.Result of laboratory test shows (seeing Table 2), and every index is more satisfactory, and residual content is little on the sieve, excellent storage stability, and the softening temperature height, sticking good toughness, aging resistance is good.
Comparative Examples 1:
Comparative Examples 1 is identical with embodiment 1 step, is not both not add dispersion agent naphthalenesulfonateformaldehyde formaldehyde mixing sodium salt and stablizer cithrol.
Get 180 gram clean waters and in water, add JWRH-MK type emulsifying agent 10 grams, SBR latex 15 restrains, mixes 55 ℃ of post-heating, the heavy traffic paving asphalt A that add 295 grams then, being heated to 145 ℃ of whiles advances colloidal mill with the solution for preparing, 3500 rev/mins of rotating speeds, promptly get product after two minutes, result of laboratory test shows (seeing Table 2), this product stable very poor, its package stability 24 hours, descended three percentage points, the low tempertaure storage stability has a large amount of coarse particless.Because bad stability, its every index is all very poor.
Comparative Examples 2:
Comparative Examples 2 is identical with embodiment 1 step, is not both not add the stablizer cithrol.
Get 180 gram clean waters, in water, add JWRH-MK type (Shanghai longitude and latitude company limited) emulsifying agent (JWRH-MK type) 10 grams, bitter edible plant sulfonic acid and formaldehyde mixing sodium salt 5 grams, stir 55 ℃ of post-heating, and then add SBR latex 15 grams mix and keep this temperature, getting 290 grammes per square metres hands over bitumen A and is heated to 145 ℃, the solution for preparing with oneself adds the colloidal mill grinding simultaneously, and the colloidal mill rotating speed is 3500 rev/mins, makes finished product after 2 minutes.Result of laboratory test shows (seeing Table 2), compares with Comparative Examples 1, and colloidal character has had obvious improvement, and stability increases. the low tempertaure storage stability still has the part particle, and the character of evaporation residue has raising, but still does not reach the requirement of index.
Summarize above three kinds of situations as can be seen: the every index of product is all very desirable after adding stablizer and dispersion agent in the raw material.Residual content is little on the sieve, excellent storage stability, the softening temperature height, extensibility is big, the toughness of colloid mixture is strong, ageing resistance is good, carries out slurry seal at Wuxi loess according to this method polymer emulsified and re-cross-linked asphalt colloid mixture of the preparation of embodiment 1 to the line of the stone village, through more than a year the heavy duty and the test of heavy traffic, overall condition behind the seal is fine, outward appearance is chocolate, does not have loose no groove mark, and aggregate does not have dropping situations.Planeness and coefficient of friction are better than heated bitumen and pave.
Embodiment 2
Get the clean water of 150 grams, in water, add the polyxyethylated quaternary amine hydrochlorate emulsifying agent of 7.5 grams, 1.5 gram sodium methylene bis-naphthalene sulfonate (NNO), the graft copolymerization compound stablizer of 10 gram organopolysiloxane and polyvalent alcohol, post-heating to 65 ℃ stirs, add 15 gram (vinyl cyanide one divinyl one styrene resin ABS) co-polymer latex again, mix.Heat preservation for standby use, and get 310 grammes per square metres and hand over pitch C, be heated to 130 ℃, after being heated evenly, enter colloidal mill with the solution that has prepared simultaneously and grind, rotating speed is 2980 rev/mins.After grinding two minutes, promptly obtain qualified polymer emulsified and re-cross pitch and mix the platform colloid.Analytical results shows (seeing Table 3), residual content, evaporation residue content reach required standard on colloidal viscosity, the sieve, package stability 24 hours only was 0.06, low temperature storage-stability degree does not have particle, does not have caking, the residue extensibility is big, the softening temperature height, toughness is strong, is a kind of ideal highway slurry seal mixing material.
Money recklessly line is area, Wuxi main line, and average vehicle flow is more than 15000/day, and major part is heavily loaded freight, has a lot of social connections 15 meters, and total length 2 kms were open to traffic in 88 years, and roadbed is fair, and wearing and tearing appear in the road surface, and, peel off the hole groove in the crack.Disease such as smooth, we adopt the colloid mixture of above-mentioned formulation to carry out the maintenance of Modified Slurry Sealing cover, and through more than a year the heavy duty and the test of heavy traffic, the overall condition behind the seal is fine always.No loose, no groove mark, aggregate does not have obscission.
Embodiment 3:
Get 157.5 gram clean waters, add RH-C05 emulsifying agent 9 grams successively, sodium methylene bis-naphthalene sulfonate MF dispersion agent 6 grams, Sha Suobide (SaSobit) stablizer 10 grams, after stirring, be warming up to 55 ℃, add 2.5 gram SBS latex polymers again, continuing to stir the mixture evenly keeps temperature stand-by, and gets and heavily hand over AH-100# pitch 305 grams to be heated to 130 ℃.Slowly add in the deployed solution behind the thermally equivalent and stir, ground 2 minutes in colloidal mill, rotating speed is 2980 rev/mins and promptly gets qualified colloid mixture (its character sees Table three).Colloid viscosity is big, and good stability, low tempertaure storage do not have coarse particles and caking, the softening temperature height, sticking toughness is strong, is beneficial to the maintenance of slurry seal cover, the flourish line of urban district, Wuxi money, former roadbed is fair, but breakage appears in the road surface, there is the hole groove in the crack, uses the colloid mixture of this formulation to carry out the slurry seal maintenance, use over 2 years, although vehicle flowrate is big, the road surface load is heavy, but it is loose that the road surface does not still have, no groove mark, no aggregate obscission.
Embodiment 4
The step of embodiment 4 is same as embodiment 1, is not both with SBS latex and substitutes SBR latex.
Embodiment 5
The step of embodiment 5 is same as embodiment 1, is not both with the cis-butadiene cement breast and substitutes SBR latex.
Embodiment 6
The step of embodiment 6 is same as embodiment 2, is not both with Atactic Polypropelene latex and substitutes ABS latex.
Embodiment 7
The step of embodiment 7 is same as embodiment 3, is not both usefulness (C
12H
14O
6S
2Na
2) the alternative MF dispersion agent of n.
Embodiment 8
The step of embodiment 8 is same as embodiment 1, is not both with EVA latex and substitutes SBR latex.
Every performance of the performance of the polymer emulsified severe pitch mixture of embodiment 4 to embodiment 8 and Pavement Performance and embodiment 1 to 3 is on same level.
Table 2
| Embodiment 1 | Comparative Examples 1 | Comparative Examples 2 | ||
| Heavy traffic paving asphalt A% (weight) | ????56.5 | ??59 | ????58 | |
| SBR latex % (weight) | ????3.0 | ??3.0 | ????3.0 | |
| Emulsifying agent JWRH-MK% (weight) | ????2.0 | ??2.0 | ????2.0 | |
| Water % (weight) | ????36 | ??36 | ????36 | |
| Dispersion agent (C 12H 14O 6S 2Na 2)n | ????1.0 | ????1.0 | ||
| Stablizer: cithrol | ????1.5 | |||
| The emulsifier aqueous solution temperature (℃) | ????55 | ??55 | ????55 | |
| The heated bitumen temperature (℃) | ????145 | ??145 | ????145 | |
| The character of colloid mixture | ||||
| Residual content on the sieve (0.8mm) % | ????0.02 | ??1.2 | ????0.85 | |
| Evaporation residue content % | ????63.5 | ??62 | ????62.5 | |
| Package stability (24h) % | ????0.1 | ??3.1 | ????2.9 | |
| Low tempertaure storage stability (5 ℃) | No coarse particles or caking | A large amount of coarse particles cakings are arranged | The coarse particles caking is arranged | |
| Evaporation back colloid | Penetration degree (25 ℃, 1/10mm) | ????92 | ??116 | ????107 |
| Extensibility (15 ℃, cm) | ????136 | ??116 | ????123 | |
| Softening temperature ℃ | ????64 | ??45 | ????42 | |
| Brittle point ℃ | ????6-19 | ??-15 | ????-16 | |
| Sticking toughness (25 ℃) N.m | ????8 | ??1.2 | ????2.38 | |
| Toughness (25 ℃) N.m | ????6.8 | ??1.15 | ????2.15 | |
| Thin film oven (163 ℃, 5h) | ||||
| Penetration ratio % | ????74.2 | ??70 | ????70.1 | |
| Ductility (15 ℃) Cm | ????130 | ??49 | ????58 | |
| Softening temperature | ????66 | ??45 | ????42 | |
| Vaporization losses | ????0.02 | ??0.21 | ????0.47 | |
Table 3
| Embodiment 2 | Embodiment 3 | ||
| Heavy traffic paving asphalt B (AH-90#) % (weight) | ????62 | ||
| Heavy traffic paving asphalt C (AH-100#) % (weight) | ????61 | ||
| Emulsifying agent: XLY2000 (polyxyethylated quaternary ammonium salt) % (weight) | ????1.5 | ||
| RH-C05 (amides) % (weight) | ????1.8 | ||
| Modifier polymer: ABS (vinyl cyanide one divinyl one styrene resin) % (weight) | ????3 | ||
| SBS (styrene-butadiene one polystyrene ternary segmented copolymer) % (weight) | ????2.5 | ||
| Water % (weight) | ????30 | ????31.5 | |
| Dispersion agent sodium methylene bis-naphthalene sulfonate (NNO) % (weight) | ????1.5 | ||
| Dispersing agent MF MF (C 22H 20O 6S 2Na 2) | ????1.2 | ||
| Stablizer: the graft copolymerization compound % (weight) of organopolysiloxane and polyvalent alcohol | ????2 | ||
| Husky element must moral (SaSobit) (weight) | ????2 | ||
| Heated bitumen temperature ℃ | ????130 | ????130 | |
| Emulsifier aqueous solution temperature ℃ | ????65 | ????65 | |
| The character of colloid mixture | |||
| Pitch normal viscosity degree (25 ℃) 3 (S) | ????19 | ????20 | |
| Residual content on the sieve (0.8mm) % | ????0.01 | ????0.015 | |
| Evaporation residue content % | ????68 | ????66.5 | |
| Package stability (24h) % | ????0.06 | ????0.09 | |
| Low tempertaure storage stability (5 ℃) | No coarse particles or caking | No coarse particles or caking | |
| De-emulsification speed | Slowly split fast coagulating | Slowly split fast coagulating | |
| Evaporation back colloid | Penetration degree (25 ℃, 1/10mm) | ????88 | ????91 |
| Extensibility (15 ℃, cm) | ????138 | ????137 | |
| Softening temperature ℃ | ????62 | ????65 | |
| Brittle point ℃ | ????-18 | ????-19 | |
| Sticking toughness (25 ℃) N.m | ????8.7 | ????9.2 | |
| Toughness (25 ℃) N.m | ????7.5 | ????8.2 | |
| Thin film oven (163 ℃, 5h) | |||
| Penetration ratio % | ????70 | ????70.1 | |
| Ductility (15 ℃) cm | ????132 | ????130 | |
| Softening temperature | ????64 | ????66 | |
| Vaporization losses | ????0.05 | ????0.047 | |
Claims (10)
1, a kind of polymer emulsified and re-cross-linked asphalt colloid mixture comprises that following component and component weight ratio form through mixing, emulsification, glue mill:
Modifier polymer 1.5-4.5 weight part
Dispersion agent 0.5-1.5 weight part
Stablizer 0.5-2.0 weight part
Heavy traffic paving asphalt 55-70 weight part
Emulsifying agent 1.0-2.5 weight part
Water 41.5-19.5 weight part
2,, comprise following component and component weight ratio according to the polymer emulsified and re-cross-linked asphalt colloid mixture of claim 1:
Modifier polymer 2.0-4.0 weight part
Dispersion agent 1.0-1.5 weight part
Stablizer 1.0-2.0 weight part
Heavy traffic paving asphalt 55-65 weight part
Emulsifying agent 1.5-2.0 weight part
Water 25.5-39.5 weight part
3, according to each the polymer emulsified and re-cross-linked asphalt colloid mixture of claim 1-2, it is characterized in that described modifier polymer is acrylonitrile-butadiene one styrene resin, Atactic Polypropelene, cis-1,4-polybutadiene rubber, chloroprene rubber, styrene-butadiene rubber(SBR), ethene one vinyl acetate copolymer, polyethylene, styrene-butadiene ternary block polymer and their latex thereof.
4, according to each the polymer emulsified and re-cross-linked asphalt colloid mixture of claim 1-2, it is characterized in that described dispersion agent is naphthalene sulfonic acidformaldehyde condensation product and sodium salt, sodium methylene bis-naphthalene sulfonate or its pair of methylene methyl naphthalene sulfonic acid sodium.
5, according to each the polymer emulsified and re-cross-linked asphalt colloid mixture of claim 1-2, it is characterized in that described stablizer is graft copolymerization compound, alkylphenol polyoxyethylene class or the bentonite of polyolefins compound, organopolysiloxane and polyvalent alcohol.
6,, it is characterized in that described emulsifying agent is for splitting fast type cationic emulsifier and the anionic emulsifier of coagulating slowly according to each the polymer emulsified and re-cross-linked asphalt colloid mixture of claim 1-2.
7,, it is characterized in that describedly splitting slowly that fast to coagulate type be the mixture of amides, imidazolines, alkylamidoalkyl polyamines class, fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene according to each polymer emulsified and re-cross-linked asphalt colloid mixture of claim 6.
8, according to each the polymer emulsified and re-cross-linked asphalt colloid mixture of claim 1-2, it is characterized in that described modifier polymer is a styrene-butadiene ternary block polymer latex.
9, a kind of preparation method of polymer emulsified and re-cross-linked asphalt colloid mixture comprises the following steps:
(1) water, emulsifying agent, modifier polymer, dispersion agent, stablizer are pressed described weight ratio
Mixing and stirring, after heat up and continue to stir in 50-70 ℃;
(2) heavy traffic paving asphalt is heated to 140-150 ℃ by described weight ratio, with the even heat of step 1
Liquid adds in the colloidal mill together and grinds, polymer emulsified and re-cross-linked asphalt colloid mixture.
10, according to the preparation method of claim 9, it is characterized in that being warmed up to 55-60 ℃ in the step 1, grinding rotating speed in the step 2 is 2900-5500 rev/min, milling time was less than 2 minutes.
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