CN103554930A - High-concentration SBR (styrene butadiene rubber) modified emulsified asphalt and preparation method thereof - Google Patents
High-concentration SBR (styrene butadiene rubber) modified emulsified asphalt and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-concentration SBR (styrene butadiene rubber) modified emulsified asphalt which is composed of the following components in percentage by mass: 65-80% of asphalt, 2-6% of SBR latex, 1.2-3.5% of emulsifier and a proper amount of water. The invention also discloses a preparation method of the SBR modified emulsified asphalt. The modified emulsified asphalt has high-concentration solid content, and can be diluted by water into different concentrations according to the construction demands in the transportation process from the production plant to the construction site, thereby greatly reducing the storage space and transportation cost and enhancing the economic benefit.
Description
Technical field
The present invention relates to a kind of emulsified bitumen, relate in particular to a kind of high density SBR modified emulsifying asphalt, the invention still further relates to the preparation method of this SBR modified emulsifying asphalt.
Background technology
Styrene-butadiene rubber(SBR) (SBR) modified emulsifying asphalt is a kind of emulsified asphalt product that carries out modification by adding high molecular polymer SBR, it not only has good low-temperature performance, also have good adhesive property and ageing resistance, thus more and more widely in highway engineering and construction work by promotion and application.The preparation method of SBR modified emulsifying asphalt has three kinds, and the first is first SBR latex to be stirred and is made into soap lye together with emulsifying agent, then product is made in the emulsification of process colloidal mill together with pitch.The second is first to prepare emulsified bitumen, then SBR latex is mixed and in emulsified bitumen, is mixed into product.The third is first pitch to be carried out to modification with SBR polymkeric substance, then the pitch after modification is carried out to emulsification and make product.But, at present, its solid content of SBR modified emulsifying asphalt using in various engineerings is generally all between 40% ~ 60%, in product, generally all contain more than 40% moisture content, when SBR modified emulsifying asphalt product is transported to working-yard use from factory, as higher in the water-content in fruit product, effective solid composition in that product is just fewer, if meet while thering is the construction requirement of identical effective solid composition, just need more products, so just need larger storage area and transportation cost.If can reduce the content of water when producing, prepare the high density SBR modified emulsifying asphalt product that a kind of solid content is very high, while being transported to working-yard from factory, according to construction, need thin up product to use again, so just can reduce storage area and transportation cost, increase economic efficiency.
Yet because the solids concn in SBR modified emulsifying asphalt is higher, the bitumen particle containing in emulsion is just more, can cause on the one hand the viscosity of emulsion to become large, increase the circulation shear difficulty while producing, emulsification is produced more difficult.Assembling can more easily appear in the bitumen particle of high density on the other hand, and clustering phenomena affects the stability of product, so current SBR modified emulsifying asphalt product solids concn is all below 60%.For example, CN 201210411432.2 has proposed the anion-modified emulsified bitumen of a kind of high infiltration, and it belongs to the product of SBR modified emulsifying asphalt class, but its maximum solids concn is only more than 50%, and water-content is more than 40%.There is not yet so far the report of the high density SBR modified emulsifying asphalt that can dilute use.
Summary of the invention
One of object of the present invention is to provide a kind of SBR modified emulsifying asphalt of high density, this modified emulsifying asphalt has the solids content of high density, in the time of can being transported to working-yard from factory, according to construction, need thin up to become different concns to use, greatly reduce storage area and transportation cost, improved economic benefit.
Two of object of the present invention is to provide the preparation method of above-mentioned high density SBR modified emulsifying asphalt.
First object of the present invention is achieved through the following technical solutions: a kind of SBR modified emulsifying asphalt of high density, is comprised of the component of following mass percent:
Pitch 65%～80%;
SBR latex 2%～6%;
Emulsifying agent 1.2%～3.5%;
Water surplus.
As one embodiment of the present of invention mode, the mass percent of described component is:
Pitch 68%～78%;
SBR latex 3%～5%;
Emulsifying agent 1.8%～2.8%;
Water surplus.
As an alternative embodiment of the invention mode, the mass percent of described component is also:
Pitch 70%～77%;
SBR latex 3.6%～4.6%;
Emulsifying agent 2%～2.6%;
Water surplus.
Pitch of the present invention can adopt the matrix pitch of different oil sources and explained hereafter, and requires penetration of bitumens to be greater than 50,60 ℃ of kinetic viscosities to be less than 200.As one embodiment of the present of invention, described pitch adopts the common petroleum pitch of propane deasphalting explained hereafter, requires its penetration degree to be greater than 50,60 ℃ of kinetic viscosities and is less than 200.
SBR latex of the present invention need be selected the SBR latex of high density, and its solid content concentration requirement is 40% ~ 60%.
Emulsifying agent of the present invention is cation asphalt emulgent.Described cation asphalt emulgent is a kind of in JY-R2H cation asphalt emulgent, JY-R4 cation asphalt emulgent, JY-R4H cation asphalt emulgent, FS-C01 cation asphalt emulgent, PW-12 cation asphalt emulgent and PW-07 cation asphalt emulgent.
Water of the present invention requires as clear as crystal, inclusion-free, with neutral water, is advisable.
Second object of the present invention realizes by following technical measures: a kind of preparation method of high density SBR modified emulsifying asphalt, comprises the following steps:
(1), in raw material total mass, take 65%～80% pitch, 2%～6% SBR latex, 1.2%～3.5% emulsifying agent and water;
(2) described emulsifying agent is added to the water to stir and is made into soap lye and is heated to 55 ℃～80 ℃ together with SBR latex, described asphalt heating to 125 ℃～150 ℃;
(3) first hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, adds after heated bitumen, and recirculation is sheared 1 ~ 2 minute, makes high density SBR modified emulsifying asphalt product.
In described step (3), the speed that adds of heated bitumen can not be too fast, should be controlled at the emulsion shearing circulation that can keep in emulsifying device and be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.
The described emulsifying device of step (3) refers to circulation shear machine or colloidal mill etc.
the present invention compared with prior art has following unusual effect:
(1) the effective solid in SBR modified emulsifying asphalt provided by the invention, pitch and SBR component concentration, higher than 65%, can reach 85%.Excessive moisture is few, and the storage and transportation space taking is little, be convenient to store, and transportation cost is low.
In the present invention, 60 ℃ of kinetic viscosities of the pitch of selecting are less than 200, have reduced the difficulty that emulsification is sheared.What select is the SBR latex of high density simultaneously, its effective SBR solid ingredient is up to 40%～60%, can play the effect that increases solids content in modified emulsifying asphalt on the one hand, on the other hand because itself presents liquid state, can dissolve each other and be made into soap lye with water and emulsifying agent, indirectly increased the accounting of external phase soap lye, bitumen particle level of density in emulsion is declined, thereby further reduced the difficulty of emulsification shearing and reduced the gathering that product occurs because of bitumen particle excessive concentration, clustering phenomena, has improved the stability of product.And because the emulsifying agent of selecting is to belong to the emulsifying agent that low viscosity emulsified bitumen is used, so when preparation high density SBR modified emulsifying asphalt, although the solids concn in emulsion is very high, but emulsion viscosity is not high, therefore can shears smoothly circulation and prepare high density SBR modified emulsifying asphalt.
(2) SBR modified emulsifying asphalt provided by the invention can need direct thin up to become the SBR modified emulsifying asphalt of different concns to use in construction work, highway engineering, antiseptic project, waterproofing work etc. field according to various constructions, has use and higher service efficiency widely.
Embodiment
Set forth in further detail by the following examples content of the present invention, but following embodiment is just for setting forth content of the present invention, rather than restriction, therefore in the implication suitable with claims of the present invention and any change in scope, all should think to be included in the scope of claims.
In following examples, JY-R2H cation asphalt emulgent, JY-R4 cation asphalt emulgent, JY-R4H cation asphalt emulgent are the product that Jinyang material scientific & technical corporation produces; FS-C01 cation asphalt emulgent is the product that Fu Site chemical company produces; The product that PW-12 cation asphalt emulgent, PW-07 cation asphalt emulgent Wei Bohua chemical science and technology company produce.
embodiment mono-
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: 750 grams, the Vincent Yi Chong commingled crude propane pitch that Maoming Petrochemical is produced, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=136.
SBR latex: 40 grams, the SBR-40 of Zibo Qiao Long company, its solid content concentration is 40%.
Emulsifying agent: the FS-C01 cation asphalt emulgent that 23Ke， Fu Site chemical company produces.
Water: 187 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 65 ℃, by asphalt heating to 140 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of pitch regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 2 minutes, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 77.8% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment bis-
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: 780 grams, No. 70 B level road bitumens of the heavy commingled crude of Sha Zhongyi that Maoming Petrochemical is produced, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=145.
SBR latex: 48 grams, 40 type styrene-butadiene latexes of Shandong Xian Yuan chemical science and technology company, its solid content concentration is 40%.
Emulsifying agent: 28 grams, the JY-R2H cation asphalt emulgent that Jinyang material scientific & technical corporation produces.
Water: 144 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 70 ℃, by asphalt heating to 150 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of pitch regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 2 minutes, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 81.9% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment tri-
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: 690 grams, No. 70 A level road bitumens of Sha Zhong Kuwait commingled crude that Maoming Petrochemical is produced, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=190.
SBR latex: 32 grams, the SBR-40 of Zibo Qiao Long company, its solid content concentration is 40%.
Emulsifying agent: 20 grams, the JY-R4 cation asphalt emulgent that Jinyang material scientific & technical corporation produces.
Water: 258 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 60 ℃, by asphalt heating to 130 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 1 minute, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 72.6% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment tetra-
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: 790 grams, the Sandi Light Crude propane pitch that Maoming Petrochemical is produced, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=91.
SBR latex: 58 grams, the SBR-60 of Zibo Qiao Long company, its solid content concentration is 60%.
Emulsifying agent: 35 grams, the JY-R4 cation asphalt emulgent that Jinyang material scientific & technical corporation produces.
Water: 117 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 75 ℃, by asphalt heating to 150 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 2 minutes, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 83.7% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment five
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: No. 90 A level road bitumens that 730Ke， Korea S SK company produces, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=161.
SBR latex: 42 grams, the SBR-40 of Zibo Qiao Long company, its solid content concentration is 40%.
Emulsifying agent: 22 grams, the JY-R4H cation asphalt emulgent that Jinyang material scientific & technical corporation produces.
Water: 206 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 65 ℃, by asphalt heating to 140 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 2 minutes, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 75.9% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment six
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: 770 grams, the Kuwait Yi Chong underpressure distillation pitch that Maoming Petrochemical is produced, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=156.
SBR latex: 46 grams, 60 type styrene-butadiene latexes of Shandong Xian Yuan chemical science and technology company, its solid content concentration is 60%.
Emulsifying agent: the PW-07 cation asphalt emulgent that 26 Ke，Bo Hua chemical science and technology companies produce.
Water: 158 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 70 ℃, by asphalt heating to 145 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 2 minutes, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 81.2% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment seven
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: 675 grams, No. 70 B level road bitumens of the heavy commingled crude of Sha Zhongyi that Maoming Petrochemical is produced, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=145.
SBR latex: 30 grams, the SBR-60 of Zibo Qiao Long company, its solid content concentration is 60%.
Emulsifying agent: the PW-12 cation asphalt emulgent that 16 Ke，Bo Hua chemical science and technology companies produce.
Water: 279 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 60 ℃, by asphalt heating to 135 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 1 minute, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 70.3% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
embodiment eight
1000 grams of the production of take products of the present invention are example, and raw material used and proportioning thereof are:
Pitch: No. 90 A level road bitumens that 760Ke， Korea S SK company produces, its penetration degree is greater than 50,60 ℃ of kinetic viscosity=161.
SBR latex: 45 grams, the SBR-60 of Zibo Qiao Long company, its solid content concentration is 60%.
Emulsifying agent: 26 grams, the JY-R4 cation asphalt emulgent that Jinyang material scientific & technical corporation produces.
Water: 169 grams, as clear as crystal, pure tap water.
First emulsifying agent is added to the water together with SBR latex stir and is made into soap lye and is heated to 70 ℃, by asphalt heating to 145 ℃.Then hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, and the speed control that adds of heated bitumen can keep the emulsion circulation shear in emulsifying device to be advisable.The speed that adds of heated bitumen regulates according to the emulsion loop condition in emulsifying device, if loop condition appears being difficult in emulsion, need temporarily slow down or stop adding of heated bitumen, etc. emulsion circulation, continues to add remaining heated bitumen after normal again.Add after heated bitumen, recirculation is sheared 2 minutes, makes high density SBR modified emulsifying asphalt product.The solids content concn of this finished product is 80.3% after testing, and quality is good, can become the SBR modified emulsifying asphalt of different concns to use by normal thin up.
The result of table 1 shows, the effective solid content of product of the present invention is high, and storage stability is good, steady quality, and without breakdown of emulsion clustering phenomena, and low-temperature ductility performance index are good.
Claims (10)
1. a SBR modified emulsifying asphalt for high density, is characterized in that, the component of following mass percent, consists of:
Pitch 65%～80%;
SBR latex 2%～6%;
Emulsifying agent 1.2%～3.5%;
Water surplus.
2. the SBR modified emulsifying asphalt of high density according to claim 1, is characterized in that, the mass percent of described component is:
Pitch 68%～78%;
SBR latex 3%～5%;
Emulsifying agent 1.8%～2.8%;
Water surplus.
3. the SBR modified emulsifying asphalt of high density according to claim 1, is characterized in that, the mass percent of described component is also:
Pitch 70%～77%;
SBR latex 3.6%～4.6%;
Emulsifying agent 2%～2.6%;
Water surplus.
4. according to the SBR modified emulsifying asphalt of the high density described in claim 1 or 2 or 3, it is characterized in that, described pitch is the matrix pitch of different oil sources and explained hereafter, and requires penetration of bitumens to be greater than 50,60 ℃ of kinetic viscosities to be less than 200.
5. according to the SBR modified emulsifying asphalt of the high density described in claim 1 or 2 or 3, it is characterized in that, described pitch is the common petroleum pitch of propane deasphalting explained hereafter, requires its penetration degree to be greater than 50,60 ℃ of kinetic viscosities and is less than 200.
6. according to the SBR modified emulsifying asphalt of the high density described in claim 1 or 2 or 3, it is characterized in that, described SBR latex is that solid content concentration is 40% ~ 60% SBR latex.
7. according to the SBR modified emulsifying asphalt of the high density described in claim 1 or 2 or 3, it is characterized in that, described emulsifying agent is cation asphalt emulgent.
8. according to the SBR modified emulsifying asphalt of the high density described in claim 1 or 2 or 3, it is characterized in that, described water is as clear as crystal pure neutral water.
9. the preparation method of the high density SBR modified emulsifying asphalt described in the arbitrary claim of claim 1 ~ 8, is characterized in that, comprises the following steps:
(1), in raw material total mass, take 65%～80% pitch, 2%～6% SBR latex, 1.2%～3.5% emulsifying agent and water;
(2) described emulsifying agent is added to the water to stir and is made into soap lye and is heated to 55 ℃～80 ℃ together with SBR latex, described asphalt heating to 125 ℃～150 ℃;
(3) first hot soap lye is added in emulsifying device after circulation, circulation shear limit, limit adds heated bitumen, adds after heated bitumen, and recirculation is sheared 1 ~ 2 minute, makes high density SBR modified emulsifying asphalt product.
10. the preparation method of high density SBR modified emulsifying asphalt according to claim 9, is characterized in that, in described step (3), within the scope of the emulsion circulation shear that adds speed to be controlled to keep in emulsifying device of heated bitumen; Described emulsifying device refers to circulation shear machine or colloidal mill.
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