CN101613515B - High viscosity high elasticity asphalt modifier preparation method - Google Patents
High viscosity high elasticity asphalt modifier preparation method Download PDFInfo
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Abstract
The invention belongs to the technical field of asphalt modifier, in particular relates to a high viscosity high elasticity asphalt modifier and a preparation method thereof. The high viscosity high elasticity asphalt modifier is characterized in that the high viscosity high elasticity asphalt modifier is prepared by raw materials of a primary modifier, a tackifier, an anti-ageing component, a plastifying component and a stabilizer with the mass proportioning being 100:20-40:18-32:15-30:2-5 sequentially; the primary modifier is of phenylethylene-butadiene-phenylethylene segmented copolymer; the tackifier is petroresins or abietic resin; the anti-ageing component is activated rubber powder; the plastifying component is dioctyl phthalate or dibutyl phthalate; and the stabilizer is sulfur. The asphalt modifier prepared by the method can improve high temperature stability, low temperature anti-cracking performance, anti-ageing performance and elasticity restoration capability of asphalt.
Description
Technical field
The invention belongs to the asphalt modifier technical field, be specifically related to a kind of preparation method of high viscosity high elasticity asphalt modifier.
Background technology
Along with the fast development of highway in China traffic, the construction of Longspan Bridge, the particularly large-scale Jiang Haiqiaoliang of striding has obtained developing rapidly.Adopt the steel-concrete composite beam structure at Longspan Bridge, effectively avoid the steel bridge deck asphalt compound at high temperature to be difficult to and steel plate bonding and cooperative transformation, so cause deck paving passing, destruction this global problem of mating formation such as embrace.Yet the composite beam bridge panel is to be spliced by the precast prestressed concrete plate, and this just causes the compound beam bridge floor to mat formation to have the waterproof of decking, prevent the technical barriers such as generation of reflection crack.The stress absorbing membrane middle layer is widely used in absorption of stress and the waterproof layer that transform on old road in American-European countries, it mainly is by spilling cloth snappiness consolidating material, as rubber asphalt, high volume SBS modifying asphalt etc., and spreading graded broken stone up, form the absorption of stress film, play absorption of stress and waterproof effect.Especially during rubber asphalt,, make that rubber asphalt stress absorbing membrane middle layer has obtained using very widely abroad because rubber asphalt has excellent visco-elasticity and higher high temperature viscosity.Yet because the rubber powder industry of China is backward relatively, many directly the cutting by junked tire of rubber powder made, and handle through desulfurization, and particle shape is not good, and home rubber pitch is difficult to satisfy the requirement in absorption of stress middle layer.
For above problem, the someone has invented products such as TPS properties-correcting agent in succession, improve bituminous high temperature bond performance and high-temperature stability, but its crack resistance at low-temperature and elastic recovery capability is relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of high viscosity high elasticity asphalt modifier, the asphalt modifier of this method preparation can improve bituminous high-temperature stability, low temperature anti-cracking performance, ageing resistance and elastic recovery capability.
To achieve these goals, technical scheme of the present invention is: a kind of preparation method of high viscosity high elasticity asphalt modifier is characterized in that it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: (20～40): (18～32): (15～30): (2～5), choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is a styrene-butadiene-styrene block copolymer, selects the star-like styrene-butadiene-styrene block copolymer or the styrene-butadiene-styrene block copolymer of line style for use; Described tackifier are petroleum resin or Gum Rosin; Described anti-aging component is an activating rubber powder; Described plasticizing component is dioctyl phthalate (DOP) or dibutyl phthalate; Described stablizer is a sulphur;
2) { add-on of organic solvent is 100%～200% of modified host crystal, tackifier, anti-aging component, plasticizing component and a stablizer total mass modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer to be dissolved at normal temperatures organic solvent, even modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in the organic solvent fully }, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500～3000r/min, shear time is 30～60min, obtains mixing solutions;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 160～180 ℃, and be 60～120min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator granulation of solids input, 140～160 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
Described organic solvent is: hexanaphthene or acetone.
The viscosity number of resulting high viscosity high elasticity asphalt modifier has full-bodied characteristic greater than 20000Pas; 25 ℃ of sticking toughness are greater than 20Nm, and 25 ℃ of toughness have elastomeric characteristic greater than 15Nm.
Beneficial effect of the present invention: high temperature bond performance and high-temperature stability that petroleum resin that add in the employing modified host crystal styrene-butadiene-styrene block copolymer raw material or Gum Rosin can increase bituminous concrete, the adding of activating rubber powder can improve the resistance to deterioration and the elastic recovery capability of bituminous concrete; Modified host crystal can significantly improve and gathers materials and the bituminous adhesive property, has enlarged bituminous toughness and sticking toughness simultaneously, has limited pitch and flow in bituminous concrete, has reduced the bituminous temperature sensitivity.Plasticizing component can improve bituminous low-temperature resistance energy and elastic recovery capability, and stablizer can be avoided properties-correcting agent and pitch generation laminated segregation under high-temperature condition effectively.This high viscosity high elasticity asphalt modifier can improve asphalt high-temperature adhesive property, ageing resistance and elastic recovery capability, prepared pitch goes for the waterproof bond stress absorption layer, can improve the road surface anti-fatigue performance effectively, the fissured generation of delayed reflex.
Indoor a large amount of tests (application test of high viscosity high elasticity asphalt modifier) prove good absorption of stress and water-proof binding effect through the laboratory in the present invention.Test (JTJ052-2000) is carried out according to " highway engineering pitch and asphalt testing regulation ", and technical indicator is carried out according to " asphalt highway construction technique normalizing " (JTG F40-2004) contrast.
Embodiment
In order to understand the present invention better, 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:
A kind of high viscosity high elasticity asphalt modifier, it is formed by modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer feedstock production, and each raw material mass mixture ratio is: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 20: 18: 15: 2;
Described modified host crystal is the styrene-butadiene-styrene block copolymer of line style; Described tackifier are petroleum resin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dioctyl phthalate (DOP); Described stablizer is a sulphur.
The preparation method of above-mentioned a kind of high viscosity high elasticity asphalt modifier, it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 20: 18: 15: 2, choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is the styrene-butadiene-styrene block copolymer of line style; Described tackifier are petroleum resin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dioctyl phthalate (DOP); Described stablizer is a sulphur;
2) { add-on of organic solvent is 100% of modified host crystal, tackifier, anti-aging component, plasticizing component and a stablizer total mass modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer to be dissolved at normal temperatures organic solvent, even modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in the organic solvent fully }, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 2000r/min, shear time is 60min, obtains mixing solutions; Described organic solvent is: hexanaphthene;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 160 ℃, and be 120min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator of solids input (Laizhou City, Shandong Province moral wins the fervent air-cooled plastic granulator that plastics machinery produces) granulation, 160 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
The high viscosity high elasticity asphalt modifier using method that present embodiment obtains is as follows: matrix pitch is heated to 160 ℃, in matrix pitch, add high viscosity high elasticity asphalt modifier in proportion, utilized the stirrer stirring at low speed 1 hour, whipping temp is 175 ℃, adopted the high-speed shearing machine high speed shear then 1 hour, shearing rate is 50r/min, shear temperature is 175 ℃, with the high viscosity high elasticity modifying asphalt that makes swelling 3～4 hours in baking oven, promptly obtain the high viscosity high elasticity modifying asphalt at last.
The technical indicator that table 1 reaches for the obtained high viscosity high elasticity modifying asphalt of high viscosity high elasticity asphalt modifier that adds different ratios.
Embodiment 2:
A kind of high viscosity high elasticity asphalt modifier, it is formed by modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer feedstock production, and each raw material mass mixture ratio is: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 25: 20: 18: 3;
Described modified host crystal is star-like styrene-butadiene-styrene block copolymer; Described tackifier are Gum Rosin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dibutyl phthalate; Described stablizer is a sulphur.
The preparation method of above-mentioned a kind of high viscosity high elasticity asphalt modifier, it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 25: 20: 18: 3, choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is star-like styrene-butadiene-styrene block copolymer; Described tackifier are Gum Rosin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dibutyl phthalate; Described stablizer is a sulphur;
2) { add-on of organic solvent is 120% of modified host crystal, tackifier, anti-aging component, plasticizing component and a stablizer total mass modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer to be dissolved at normal temperatures organic solvent, even modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in the organic solvent fully }, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 3000r/min, shear time is 60min, obtains mixing solutions; Described organic solvent is: hexanaphthene;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 170 ℃, and be 90min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator of solids input (Laizhou City, Shandong Province moral wins the fervent air-cooled plastic granulator that plastics machinery produces) granulation, 150 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
Embodiment 3:
A kind of high viscosity high elasticity asphalt modifier, it is formed by modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer feedstock production, and each raw material mass mixture ratio is: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 30: 20: 25: 3;
Described modified host crystal is star-like styrene-butadiene-styrene block copolymer; Described tackifier are petroleum resin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dibutyl phthalate; Described stablizer is a sulphur.
The preparation method of above-mentioned a kind of high viscosity high elasticity asphalt modifier, it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 30: 20: 25: 3, choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is star-like styrene-butadiene-styrene block copolymer; Described tackifier are petroleum resin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dibutyl phthalate; Described stablizer is a sulphur;
2) { add-on of organic solvent is 150% of modified host crystal, tackifier, anti-aging component, plasticizing component and a stablizer total mass modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer to be dissolved at normal temperatures organic solvent, even modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in the organic solvent fully }, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500r/min, shear time is 50min, obtains mixing solutions; Described organic solvent is: acetone;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 180 ℃, and be 60min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator of solids input (Laizhou City, Shandong Province moral wins the fervent air-cooled plastic granulator that plastics machinery produces) granulation, 150 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
Embodiment 4:
A kind of high viscosity high elasticity asphalt modifier, it is formed by modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer feedstock production, and each raw material mass mixture ratio is: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 40: 18: 21: 3;
Described modified host crystal is the styrene-butadiene-styrene block copolymer of line style; Described tackifier are Gum Rosin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dioctyl phthalate (DOP); Described stablizer is a sulphur.
The preparation method of above-mentioned a kind of high viscosity high elasticity asphalt modifier, it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 40: 18: 21: 3, choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is the styrene-butadiene-styrene block copolymer of line style; Described tackifier are Gum Rosin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dioctyl phthalate (DOP); Described stablizer is a sulphur;
2) { add-on of organic solvent is 200% of modified host crystal, tackifier, anti-aging component, plasticizing component and a stablizer total mass modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer to be dissolved at normal temperatures organic solvent, even modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in the organic solvent fully }, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 3000r/min, shear time is 30min, obtains mixing solutions; Described organic solvent is: acetone;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 180 ℃, and be 90min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator of solids input (Laizhou City, Shandong Province moral wins the fervent air-cooled plastic granulator that plastics machinery produces) granulation, 140 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
Embodiment 5:
A kind of high viscosity high elasticity asphalt modifier, it is formed by modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer feedstock production, and each raw material mass mixture ratio is: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 35: 30: 20: 5;
Described modified host crystal is the styrene-butadiene-styrene block copolymer of line style; Described tackifier are petroleum resin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dibutyl phthalate; Described stablizer is a sulphur.
The preparation method of above-mentioned a kind of high viscosity high elasticity asphalt modifier, it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: 35: 30: 20: 5, choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is the styrene-butadiene-styrene block copolymer of line style; Described tackifier are petroleum resin; Described anti-aging component is an activating rubber powder; Described plasticizing component is a dibutyl phthalate; Described stablizer is a sulphur;
2) { add-on of organic solvent is 100% of modified host crystal, tackifier, anti-aging component, plasticizing component and a stablizer total mass modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer to be dissolved at normal temperatures organic solvent, even modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in the organic solvent fully }, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 2500r/min, shear time is 40min, obtains mixing solutions; Described organic solvent is: hexanaphthene;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 160 ℃, and be 60min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator granulation of solids input, 150 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
Table 1, the high viscosity high elasticity asphalt modifier of different ratios to the influence of matrix pitch (6% in the table 1,8%, 10% represented the incorporation of high viscosity high elasticity asphalt modifier respectively, for account for the matrix pitch total mass percent what)
The softening temperature test, storage stability and 60 ℃ and 135 ℃ of viscosity explanation high-temperature stabilities; Ductility test explanation low temperature anti-cracking performance; Residue test explanation ageing resistance behind the RTFOT; Sticking toughness and toughness test explanation elastic recovery capability.
Each raw material that the present invention is cited and the bound value of each raw material, and the bound value of each processing parameter can both realize the present invention, do not enumerate embodiment one by one at this.
Claims (2)
1. the preparation method of a high viscosity high elasticity asphalt modifier is characterized in that it comprises the steps:
1) choosing of raw material: by each raw material mass mixture ratio be: modified host crystal: tackifier: anti-aging component: plasticizing component: stablizer=100: (20～40): (18～32): (15～30): (2～5), choose modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer raw material, standby;
Wherein, described modified host crystal is a styrene-butadiene-styrene block copolymer; Described tackifier are petroleum resin or Gum Rosin; Described anti-aging component is an activating rubber powder; Described plasticizing component is dioctyl phthalate (DOP) or dibutyl phthalate; Described stablizer is a sulphur;
2) modified host crystal, tackifier, anti-aging component, plasticizing component and stablizer are dissolved in organic solvent at normal temperatures, and adopt high-speed shearing machine to carry out high speed shear, rotating speed is 1500～3000r/min, and shear time is 30～60min, obtains mixing solutions;
3) adopt electric furnace mixing solutions to be heated and stir and make the organic solvent volatilization, Heating temperature is 160～180 ℃, and be 60～120min heat-up time, obtains solids;
4) with the fervent air-cooled plastic granulator granulation of solids input, 140～160 ℃ of start blending temperature controls are cooled to normal temperature, obtain high viscosity high elasticity asphalt modifier.
2. the preparation method of a kind of high viscosity high elasticity asphalt modifier according to claim 1 is characterized in that described organic solvent is: hexanaphthene or acetone.
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