CN103232716A - Preparation method of petroleum asphalt anti-stripping agent suitable for acid stone - Google Patents
Preparation method of petroleum asphalt anti-stripping agent suitable for acid stone Download PDFInfo
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- CN103232716A CN103232716A CN2013101773553A CN201310177355A CN103232716A CN 103232716 A CN103232716 A CN 103232716A CN 2013101773553 A CN2013101773553 A CN 2013101773553A CN 201310177355 A CN201310177355 A CN 201310177355A CN 103232716 A CN103232716 A CN 103232716A
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Abstract
The invention relates to a preparation method of a petroleum asphalt anti-stripping agent suitable for acid stone, which aims at improving the adhesion of the petroleum asphalt anti-stripping agent to the acid stone, improving the water damage resistance of the asphalt mixture, improving the aging resistance of the asphalt and prolonging the service life of an asphalt pavement. The preparation method comprises the following steps of (1) measuring 100 parts of eleostearic acid and 5 to 20 parts of organic bentonite to be mechanically stirred and gradually heated to 280 to 300 DEG C, and preserving the temperature for 2 to 4h to obtain nano layered silicate/tung oil dimmer acid; (2) slowly placing the nano layered silicate/tung oil dimmer acid into a diethylenetriamine system to be heated to 100 to 130 DEG C, introducing the nitrogen gas, preserving the temperature of 200 to 250 DEG C for 2 to 4h, carrying out the vacuum dehydration, recycling the diethylenetriamine to obtain a polyamide-based nano composite material; and (3) cooling the material to the temperature of 40 to 80 DEG C, adding diluting agent and phase solvent to be uniformly mixed, and then carrying out the blending of the asphalt mixture.
Description
Technical field
The present invention relates to polymer-based field of nanocomposite materials, be specifically related to the Asphalt Anti-Stripping Agent technology of preparing at acid stone.
Background technology
China middle part and the Northwest, how alkaline building stones scarcity is based on acid stone.Acid stone (grouan, sandstone, quartzite etc.) has characteristics such as stone matter is hard, fine and close, wear resisting property is strong, and effect is squeezed in the embedding that can give full play between gathering materials.Shortcoming is that the adhesion of it and pitch is bad, causes peeling off of asphalt membrane easily under the effect of moisture, causes the damage by water evils such as grain, loose, hole groove of falling of bituminous pavement to be destroyed.
The damage by water evil of bituminous pavement is one of main disease form that influences the bituminous pavement use properties, and its reason is pitch and the adhesion issues of gathering materials after all.Much studies show that, take the antistripping measure that suits, satisfy anti-water damage ability and anti-rut performance fully by the acid stone asphalt, can be used as materials such as High Grade Bitumen Pavement surface layer or wearing course, thereby reach the purpose of gathering materials on the spot, reduce construction costs.
A large amount of studies show that both at home and abroad, amine antistripping agent can significantly improve pitch and gather materials between adhesivity.The amine antistripping agent is many based on fatty amine, is surface active cpd, and the antistripping agent of other form is mainly based on phthalein amido polyamines and imidazoles beautiful jade in addition: 1. RNHCH
2CH
2CH
2NH
2(fatty amine); 2. RCONH (C
3H
6) NC
3H
6NH
2(phthalein amido polyamines); 3. RCN
2(CH
2)
2CH
2CH
2NH
2(miaow beautiful jade).From molecular formula as can be seen, amine has very long hydrocarbon chain, and under the situation that water or acid are arranged, the ionizable one-tenth of amine has the amine ion R-NH of positive charge
3+So, be active cation.The amido class antistripping agent of minority is added in the pitch, because antistripping agent has the ability that changes surface of aggregate character, pitch will wetting hydrophilic aggregate surface.Though the amine antistripping agent can improve pitch and gather materials between adhesivity, this class antistripping agent major part has a fatal weakness, the resistance toheat that is exactly it is not good.Physical adsorption only takes place on the acid stone surface in this class material simultaneously, so long-term effect is relatively poor.
Summary of the invention
The objective of the invention is to improve the adhesivity with acid stone, improve the anti-water damage ability of asphalt, improve the ageing resistance of pitch, prolong the work-ing life of bituminous pavement.
The present invention is applicable toThe preparation method of the Asphalt Anti-Stripping Agent of acid stone the steps include:
(1) take by weighing 100 parts of eleostearic acids by weight, 5 ~ 20 parts of organobentonites, eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 280～300
oC keeps 2～4h, obtains nano layered silicate/tung oil dimeracid;
(2) in the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 100～130
oBehind the C, logical nitrogen protection is 200～250
oKeep carrying out vacuum behind 2～4h under the temperature of C and take off liquid, reclaim diethylenetriamine, obtain the polyamide-based nano composite material;
(3) treat that temperature is reduced to 40～80
oAdd thinner, compatilizer during C, stir, carry out asphalt again and mix.
Antistripping agent of the present invention is nano layered silicate nano composite material (name of product is abbreviated as ASA).In recent years, the appearance of nano material and the development of nanotechnology are for the modification of polymkeric substance provides new approach.Inorganic nano material more and more has been applied in the study on the modification of polymkeric substance owing to advantages such as having excellent thermotolerance and dimensional stability.Nano composite polymer/laminated silicate material is the method that adopts polyalcohol intercalation, utilizes nanotechnology to make some aspect of material show inaccessiable result in macroscopical field, mainly embodies a concentrated expression of on the performance index of material.Wilkinite is the natural nano silicate with laminate structure, is filler or the additive of present most widely used laminated nm-silicate composite material.ASA utilizes the bentonite nanostructure to prepare the intercal type polymer nanocomposites in preparation process.Its nano effect can increase its thermostability effectively, has advantageously solved this difficult problem of poor high temperature stability of antistripping agent.Simultaneously, nano effect makes mineral aggregate spontaneously attract asphaltene molecule to reduce systematically free energy again, and pitch can penetrate moisture film, diffusion and wetting surface of aggregate.Amide group is after entering asphalt system, and two keys of active amide group are opened with pitch and formed stable chemical system, makes that the nitrogen-atoms in the amide group has positive charge.Because of the avidity of the nitrogen-atoms of positively charged and the building stones avidity greater than water and building stones, make stable being attached together of building stones and amide group.Under the acting in conjunction of nano effect and electric charge absorption, pitch and building stones attract each other, and reach firm bonding.
The liquid antistripping agent of the present invention's preparation can directly drop in pitch or the modifying asphalt at the construction field (site), is applicable to plain asphalt and polymer-modified asphalt, in particular for the road drainage position, improves the anti-water damage property of bituminous pavement simultaneously.Product using method of the present invention is simple, namely directly adds in the heated bitumen.
Description of drawings
Fig. 1 is the TG curve of three kinds of antistripping agent samples.
Embodiment
The present invention is applicable toThe preparation method of the Asphalt Anti-Stripping Agent of acid stone the steps include:
(1) take by weighing 100 parts of eleostearic acids by weight, 5 ~ 20 parts of organobentonites, eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 280～300
oC keeps 2～4h, obtains nano layered silicate/tung oil dimeracid;
(2) in the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 100～130
oBehind the C, logical nitrogen protection is 200～250
oKeep carrying out vacuum behind 2～4h under the temperature of C and take off liquid, reclaim diethylenetriamine, obtain the polyamide-based nano composite material;
(3) treat that temperature is reduced to 40～80
oAdd thinner, compatilizer during C, stir, carry out asphalt again and mix.
According to above-described preparation method, nano layered silicate/tung oil dimeracid is slowly dropped in the system of diethylenetriamine, diethylenetriamine is 80～150 parts, is heated to 100～130
oLogical nitrogen protection behind the C, 200～250
oKeep 2～4h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain the nanometer polyamide based composites.
According to above-described preparation method, the thinner of adding is 5～20 parts glycerol, or phthalic acid fat, or both mixtures.
According to above-described preparation method, the compatilizer of adding is 5～10 parts hard pitch, or rock asphalt, or both mixtures.
The present invention is further described below in conjunction with concrete embodiment.
Embodiment 1
Take by weighing 100 parts of eleostearic acids by weight, 5 parts of organobentonites, 80 parts of diethylenetriamines, 5 parts of glycerol, 5 parts of dibutyl phthalate (DBP)s, 5 parts of hard pitch.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 300
oC keeps 2h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 120
oLogical nitrogen protection behind the C, 220
oKeep the 3h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 80
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
Above-mentioned nonpetroleum asphalt anti-stripping agent is added in No. 90 A level pitches of Kelamayi, Xinjiang refinery (abbreviating the gram refining as), select external antistripping agent with domestic two kinds of brands to compare test simultaneously.
(1) performance evaluation of pitch behind the adding antistripping agent
After in No. 90 A level pitches of gram refining, adding antistripping agent, directly test according to the test method in " highway engineering pitch and asphalt testing regulation " (JTG E20-2011), test result see Table 1 with table 2.
By table 1 data as can be known, the pitch that has added antistripping agent all has reduction slightly on penetration degree, and the amplitude that ASA reduces is between external product and home products.By 135 ℃ of viscosity of pitch as can be known, pitch is after adding antistripping agent, and viscosity all has a spot of increase, and different antistripping agents is similar to the change of asphalt viscosity, and namely pitch is after adding antistripping agent, and viscosity all has a small amount of increase, the increase amplitude is also consistent, can not influence construction.
As shown in Table 2, the mass loss of pitch behind short ageing of having added antistripping agent is 0, and pitch stable performance in the process of short ageing is described.For the PG graded index after the penetration ratio behind the short ageing, ductility and the long-term aging minor fluctuations is arranged all, but very little to the performance impact of pitch.By above data as can be known, after having added antistripping agent, the thermotolerance of pitch and ageing resistance strengthen.
No. 90 A level pitches of table 1 gram refining and the contrast of adding antistripping agent pitch fundamental property
Short-term and long-term aging performance behind No. 90 A level pitches of table 2 gram refining and the adding antistripping agent pitch
(2) thermogravimetric of antistripping agent (TG) is analyzed
Three kinds of antistripping agent samples are carried out thermogravimetric (TG) analysis, and experimental technique is as follows.Taking by weighing the 10mg sample respectively places in the specific container, with 10
oThe speed temperature programming of C/min, temperature range rises to 800 from room temperature
oC, draw separately thermogravimetric curve as shown in Figure 1.
Table 3 method of contrast and experiment material
In the process of thermogravimetric analysis, generally, with 5% heat decomposition temperature as material of material weightlessness (be substance combustion then lose weight), in fine chemistry sometimes also with weightlessness 2% as decomposition temperature.Listed the heat decomposition temperature of three kinds of antistripping agents that drawn by the TG curve in the table 3.By data as can be known, the heat decomposition temperature of ASA is greater than external product, and approaches with the heat decomposition temperature of home products.
(3) adhesivity of pitch and building stones experiment
Undertaken by the T0616-1993 method among the JTG E20-2011, the aging of pitch undertaken by the T0610-2011 method among the JTG E20-2011.Pitch is selected No. 90 A level pitches of gram refining, and the adhesivity experimental result sees Table 4.
No. 90 A level pitches of table 4 gram refining mix the aging front and back of antistripping agent poach adhesivity experiment one
Can be known by table 4, after ASA mixes pitch, before aging, make the poach of pitch and various building stones adhere to grade and significantly improve, be increased to 4～5 grades by 1～2 grade, the gesture of continuation raising is arranged after aging.This explanation ASA antistripping agent is after adding pitch, and the anti-water damage persistence of pitch is good, and is suitable with international like product, and is better than home products.
Embodiment 2
Take by weighing 100 parts of eleostearic acids by weight, 10 parts of organobentonites, 100 parts of diethylenetriamines, 5 parts of glycerol, 5 parts of dibutyl phthalate (DBP)s, 5 parts of hard pitch.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 300
oC keeps 2h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 100
oLogical nitrogen protection behind the C, 210
oKeep the 2h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 60
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
The antistripping agent of above preparation is added in the Korea S SK90 A level pitch, select external antistripping agent with domestic two kinds of brands to compare test simultaneously, the adhesivity experimental result sees Table 5.
Table 5 Korea S SK90 A level pitch mixes the aging front and back of antistripping agent poach adhesivity experiment two
As can be seen from Table 5, after ASA mixes pitch, before aging, make the poach of pitch and various building stones adhere to grade and significantly improve, be increased to 4～5 grades by 1～2 grade, the gesture of continuation raising is arranged after aging.This explanation ASA antistripping agent is after adding pitch, and the anti-water damage persistence of pitch is good, and is suitable with external like product, and is better than home products.
High temperature storage test, the ASA Korea S SK90 A level pitch with mixing 0.3% places 170
oIn the C baking oven, stored 0,7,14,21 day.
Table 6 high temperature storage adhesivity experiment three
As can be seen from Table 6, ASA mixed pitch after, 170
oAfter C stored and wore out in 21 days, the poach of pitch and building stones adhered to grade and also is significantly improved, and is increased to 4～5 grades by 1～2 grade.This illustrates that this product can improve adhesivity and the ageing resistance of pitch and building stones.
Embodiment 3
Take by weighing 100 parts of eleostearic acids by weight, 15 parts of organobentonites, 100 parts of diethylenetriamines, 10 parts of glycerol, 5 parts of hard pitch.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 280
oC keeps 4h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 100
oLogical nitrogen protection behind the C, 210
oKeep the 4h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 40
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
Above-mentioned antistripping agent is used for No. 90 A level asphalts of gram refining, and concrete steps are:
(1) at first mineral aggregate is heated to 180～200
oC.The level mixing ratio of building stones reaches and the pitch proportioning, determined by the asphalt mixture mixing proportion design method that national regulation is determined, according to national regulation " asphalt highway construction technique normalizing " (JTG F40-2004) design obtain mineral aggregate the level mixing ratio and with the proportioning of pitch.
(2) pitch is heated to 135～145
oAfter, the ratio according to 0.3% drops into ASA.
(3) proportionally mineral aggregate and pitch are dropped into mix 90～150s in the mix cylinder then, prepare asphalt.
Wherein, each component and the weight part of asphalt see Table 7.
The composition of table 7 asphalt
The grating type is superpave-13, and the building stones grating sees Table 8.
The gradation composition of table 8 building stones
Above-mentioned asphalt is carried out the freeze thawing split test.Experimental technique carries out according to the AASHTO T-283 testing method of U.S. SHRP, the results are shown in Table 9.
The freeze thawing cleavage strength of table 9 asphalt and strength ratio one
As can be seen from Table 9, ASA mixed pitch after, the cleavage strength of sample is greater than the cleavage strength of the compound of the matrix pitch that does not mix antistripping agent, simultaneously also greater than the asphalt of antistripping agent product both at home and abroad.Data by freeze thawing tensile splitting strength ratio can draw, and ASA is particularly outstanding for the anti-water damage ability of improving asphalt.
Embodiment 4
Take by weighing 100 parts of eleostearic acids by weight, 20 parts of organobentonites, 150 parts of diethylenetriamines, 20 parts of glycerol, 10 parts of hard pitch.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 280
oC keeps 1h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 130
oLogical nitrogen protection behind the C, 220
oKeep the 2h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 60
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
The antistripping agent of above preparation is added in No. 90 A level pitches of gram refining, and the adhesivity experimental result sees Table 10.
Table 10 adhesiveness test four
Can be known by table 10, after ASA mixes pitch, the poach adhesion grade of pitch and various building stones be significantly improved, be increased to 4～5 grades by 1～2 grade.
Above-mentioned pitch is carried out the anti-water damage property test of asphalt, and testing method is with embodiment 3, and it the results are shown in Table 11.
The freeze thawing cleavage strength of table 11 asphalt and strength ratio two
Can be known by table 11, ASA is mixed pitch after, can improve the anti-water damage ability of asphalt greatly.
Embodiment 5
Take by weighing 100 parts of eleostearic acids by weight, 10 parts of organobentonites, 120 parts of diethylenetriamines, 5 parts of glycerol, 5 parts of rock asphalts.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 300
oC keeps 2h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 100
oLogical nitrogen protection behind the C, 200
oKeep the 2h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 40
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
The antistripping agent of above preparation is added in No. 90 A level pitches of gram refining, and the adhesivity experimental result sees Table 12.
Table 12 adhesiveness test five
Can be known by table 12, after ASA mixes pitch, the poach adhesion grade of pitch and various building stones be significantly improved, be increased to 4～5 grades by 1～2 grade.
Above-mentioned pitch is carried out the anti-water damage property test of asphalt, and testing method is with embodiment 3, and it the results are shown in Table 13.
The freeze thawing cleavage strength of table 13 asphalt and strength ratio three
Can be known by table 13, ASA is mixed pitch after, can improve the anti-water damage ability of asphalt greatly.
Embodiment 6
Take by weighing 100 parts of eleostearic acids by weight, 10 parts of organobentonites, 120 parts of diethylenetriamines, 10 parts of glycerol, 5 parts of dibutyl phthalate (DBP)s, 5 parts of rock asphalts.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 300
oC keeps 2h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 110
oLogical nitrogen protection behind the C, 210
oKeep the 3h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 70
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
The antistripping agent of above preparation is added in No. 90 A level pitches of gram refining, and the adhesivity experimental result sees Table 14.
Table 14 adhesiveness test six
Can be known by table 14, after ASA mixes pitch, the poach adhesion grade of pitch and various building stones be significantly improved, be increased to 4～5 grades by 1～2 grade.
Above-mentioned pitch is carried out the anti-water damage property test of asphalt, and testing method is with embodiment 3, and it the results are shown in Table 15.
The freeze thawing cleavage strength of table 15 asphalt and strength ratio four
Can be known by table 15, ASA is mixed pitch after, can improve the anti-water damage ability of asphalt greatly.
Embodiment 7
Take by weighing 100 parts of eleostearic acids by weight, 10 parts of organobentonites, 120 parts of diethylenetriamines, 10 parts of glycerol, 10 parts of phthalic acid dimethyl esters, 5 parts of rock asphalts.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 300
oC keeps 2h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 120
oLogical nitrogen protection behind the C, 220
oKeep the 3h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 60
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
The antistripping agent of above preparation is added in No. 90 A level pitches of gram refining, and the adhesivity experimental result sees Table 16.
Table 16 adhesiveness test seven
Can be known by table 16, after ASA mixes pitch, the poach adhesion grade of pitch and various building stones be significantly improved, be increased to 4～5 grades by 1～2 grade.
Above-mentioned pitch is carried out the anti-water damage property test of asphalt, and testing method is with embodiment 3, and it the results are shown in Table 17.
The freeze thawing cleavage strength of table 17 asphalt and strength ratio five
Can be known by table 17, ASA is mixed pitch after, can improve the anti-water damage ability of asphalt greatly.
Embodiment 8
Take by weighing 100 parts of eleostearic acids by weight, 5 parts of organobentonites, 80 parts of diethylenetriamines, 10 parts of glycerol, 10 parts of phthalic acid dimethyl esters, 5 parts of rock asphalts.
Eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 300
oC keeps 2h, obtains nano layered silicate/tung oil dimeracid; In the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 130
oLogical nitrogen protection behind the C, 250
oKeep the 4h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain polyamide nano-composite.Treat that temperature is reduced to 80
oAdd thinner, compatilizer during C, mechanical stirring is even, prepares the nonpetroleum asphalt anti-stripping agent.
The antistripping agent of above preparation is added in No. 90 A level pitches of gram refining, and the adhesivity experimental result sees Table 18.
Table 18 adhesiveness test eight
Can be known by table 18, after ASA mixes pitch, the poach adhesion grade of pitch and various building stones be significantly improved, be increased to 4～5 grades by 1～2 grade.
Above-mentioned pitch is carried out the anti-water damage property test of asphalt, and testing method is with embodiment 3, and it the results are shown in Table 19.
The freeze thawing cleavage strength of table 19 asphalt and strength ratio six
Can be known by table 19, ASA is mixed pitch after, can improve the anti-water damage ability of asphalt greatly.
Claims (4)
1.
Be applicable toThe preparation method of the Asphalt Anti-Stripping Agent of acid stone the steps include:
(1) take by weighing 100 parts of eleostearic acids by weight, 5 ~ 20 parts of organobentonites, eleostearic acid and organobentonite be mechanical stirring under the protection of carbon dioxide, progressively is heated to 280～300
oC keeps 2～4h, obtains nano layered silicate/tung oil dimeracid;
(2) in the system of diethylenetriamine, slowly drop into nano layered silicate/tung oil dimeracid, be heated to 100～130
oBehind the C, logical nitrogen protection is 200～250
oKeep carrying out vacuum behind 2～4h under the temperature of C and take off liquid, reclaim diethylenetriamine, obtain the polyamide-based nano composite material;
(3) treat that temperature is reduced to 40～80
oAdd thinner, compatilizer during C, stir, carry out asphalt again and mix.
2. according to claim 1
Be applicable toThe preparation method of the Asphalt Anti-Stripping Agent of acid stone is characterized in that nano layered silicate/tung oil dimeracid is slowly dropped in the system of diethylenetriamine, and diethylenetriamine is 80～150 parts, is heated to 100～130
oLogical nitrogen protection behind the C, 200～250
oKeep 2～4h final vacuum to take off liquid under the temperature of C, reclaim diethylenetriamine, obtain the nanometer polyamide based composites.
3. according to claim 1
Be applicable toThe preparation method of the Asphalt Anti-Stripping Agent of acid stone is characterized in that the thinner that adds is 5～20 parts glycerol, or phthalic acid fat, or both mixtures.
4. according to claim 1
Be applicable toThe preparation method of the Asphalt Anti-Stripping Agent of acid stone is characterized in that the compatilizer that adds is 5～10 parts hard pitch, or rock asphalt, or both mixtures.
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