CN110016234A - A kind of SBR styrene-butadiene latex and preparation method thereof for modified emulsifying asphalt - Google Patents
A kind of SBR styrene-butadiene latex and preparation method thereof for modified emulsifying asphalt Download PDFInfo
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Abstract
A kind of SBR styrene-butadiene latex and preparation method thereof for modified emulsifying asphalt, belongs to asphalt modification technical field.It is characterized in that, parts by weight of raw materials forms are as follows: 100 parts of the cross-linked graft SBR emulsion of solid content 40% ~ 60%, 2 ~ 6 parts of nonionic emulsifier, 3 ~ 6 parts of cationic emulsifier, 0.5 ~ 1.5 part of system pH adjusting agent；Preparation step are as follows: concentration cross-linked graft styrene-butadiene latex stops when latex concentration reaches 40% ~ 60%；Nonionic emulsifier is added, stirs 10 min ~ 15min；Cationic emulsifier is added by raw material proportioning, stirs 10 min ~ 15min；By raw material proportioning be added system pH adjusting agent, adjust pH after 2 ~ 5 to obtain the final product.SBR styrene-butadiene latex of the invention is easy to use, high with emulsified asphalt mixing rear stability, is remarkably improved high temperature resistance, the viscous toughness, toughness, anti-aging property of pitch.
Description
Technical field
A kind of SBR styrene-butadiene latex and preparation method thereof for modified emulsifying asphalt, belongs to asphalt modification technical field.
Background technique
Modified emulsifying asphalt can be used in construction by way of spraying, pouring into and mix and stir and pave, in highway engineering
In be widely used in base and the surface layer of bituminous pavement sticking layer oil and priming oil, slurry seal, micro-surface area and structural pavements.Make
It when being paved the way with modified emulsifying asphalt, can construct at normal temperature, be not required to heat pitch and mineral aggregate, not only simplify operative employee
Sequence, and energy saving, while the bituminous pavement damaged is conserved in time and maintenance plays a significant role.
It is SBR styrene butadiene latex modified emulsified asphalt second ionic, cationic, non-ionic, wherein cationic pitch
The asphalt emulsion of emulsifier preparation shows many advantages, and not only storage stability is good, and is adhered to gathering materials by insertion
Physical-chemical effect, adhesiving effect is very good, and can be applicable in soda acid aggregate.Since cationic asphalt emulsifier has
Have many advantages, such as such, therefore, in asphalt emulsifier, it has occupied an leading position.
It is most widely used that asphalt modifier, which refers mainly to high molecular polymers, the polymer modifiers such as the rubber, the plastics that add,
General, the most in-depth major class modifying agent of research.It according to the property of polymer, can be divided into three categories: thermoplastic elastomer (TPE) class, rubber
Glue class, plastics and synthetic resin.Butadiene-styrene rubber belongs to rubber, butadiene-styrene rubber can obviously improve pitch low-temperature cracking-resistance and
Durability, but its high-temperature behavior, glutinous toughness, toughness are poor.Styrene butadiene rubber latex polymerization technique can be divided into high temperature emulsion polymerization
With low temperature emulsion polymerization, low temperature SBR of emulsion polymerization has better processability compared with high temperature SBR of emulsion polymerization
Energy, physical mechanical property.Although General low temperature latex modified emulsified asphalt than high temperature latex modified emulsifying asphalt softening point, stick it is tough
Property, toughness will be high, but in the range of certain additive amount, it softens after common low temperature styrene butadiene latex modified emulsified asphalt
Point is still extremely difficult to softening point >=53 required in Ministry of Communications JTG F40-2004 " standard specification for construction and acceptance of highway asphalt pavement "
℃.In order to prepare high performance modified emulsifying asphalt, mostly emulsified using SBS modified pitch, then plus styrene-butadiene latex into
The composite modified method of row produces modified emulsifying asphalt, this method modified effect is good, but emulsified modified asphalt to equipment, technology,
Material requirements is relatively high, and emulsified SBS modified asphalt stability obtained is relatively low.
Chinese patent CN201610273186.7 discloses a kind of method, with butadiene, styrene, glycidyl
Propyl ester, silane coupling agent raw material polymerize to obtain latex, by agglomeration, ionic using high temperature (50 DEG C ~ 55 DEG C) emulsion polymerization
High-content styrene-butadiene latex is made in conversion, centrifugal concentrating, and then latex compounds the silane coupling agent aqueous solution of 40% concentration for emulsifying
Asphalt modification；Poly- its physical mechanical property of styrene-butadiene latex of the cream of high temperature made from the patent is lower, modified emulsifying asphalt it is high temperatures
Can degree more than needed less, silane coupling agent hydrolyzes too fast in acid condition, has formed silane gel, has caused dispersion uneven, shadow
Ring service performance.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of drawing of modified emulsifying asphalt
Stretch the SBR butylbenzene for modified emulsifying asphalt that intensity is high, viscous toughness is high, toughness is high, high-temperature behavior and anti-aging property are excellent
Latex and preparation method thereof.
The technical solution adopted by the present invention to solve the technical problems is: this is used for the SBR butadiene-styrene rubber of modified emulsifying asphalt
Cream, which is characterized in that parts by weight of raw materials composition are as follows: 100 parts of the cross-linked graft SBR emulsion of solid content 40% ~ 60% is (by dry
Glue poidometer), 2 ~ 6 parts of nonionic emulsifier, 3 ~ 6 parts of cationic emulsifier, 0.5 ~ 1.5 part of system pH adjusting agent；It is wherein described
Cross-linked graft SBR emulsion be prepared in mass ratio by following raw material: 1500 or 1502 SBR emulsions are (by dry
Glue poidometer), emulsifier isproportionated potassium rosinate or fatty acid potassium soap, peroxide initiator, polyisocyanates crosslinking agent
Or polyallyl class crosslinking agent, titanate coupling agent grafted monomers, reproducibility sodium salt catalyst, latex agglomeration agent, anti-aging agent
Mass ratio be 100:1.0 ~ 5.0:0.1 ~ 1.0:1.0 ~ 5.0:1.0 ~ 8.0:0.02 ~ 0.10:2 ~ 5:0.05 ~ 0.50.
The present invention provides a kind of SBR styrene-butadiene latex modified for emulsified asphalt, changes having general synthesis styrene-butadiene latex
While cryogenic property possessed by property emulsified asphalt, ductility and adhesive property, modified emulsifying asphalt is increased substantially
Tensile strength, viscous toughness, toughness, high-temperature behavior, anti-aging property.The present invention in general synthesizing butadiene styrene rubber lotion, with
Peroxide be initiator, polyisocyanates or polyallyl be crosslinking agent, titanate coupling agent be monomer carry out crosslinking and
Graft reaction.Anti-aging agent is added in the SBR styrene-butadiene latex of cross-linked graft, by agglomeration, vacuum distillation dehydration, obtain solid content 40% ~
Then 60% anion styrene-butadiene latex carries out ionic conversion, obtains the cationic styrene-butadiene latex of solid content 40% ~ 60%.This hair
Bright SBR styrene-butadiene latex is easy to use, high with emulsified asphalt mixing rear stability, be remarkably improved pitch high temperature resistance,
Viscous toughness, toughness, anti-aging property, the adhesion property with inorganic building stones, to improve the service life of pitch.
Wherein, SBR emulsion is 1500 types of general synthesis or 1502 type SBR emulsions, solid content 19% ~
40%, preferably 20% ~ 25%.
Peroxide initiator is cumyl peroxide, benzoyl peroxide, di-isopropylbenzene hydroperoxide, isopropylbenzene mistake
Hydrogen oxide, preferably benzoyl peroxide, cumyl peroxide.
Polyisocyanates crosslinking agent be toluene di-isocyanate(TDI) (TDI), methyl diphenylene diisocyanate (MDI), three
Allyl fulminuric acid ester (TAIC)；Polyallyl class crosslinking agent is triallyl cyanurate (TAC), preferably polyisocyanate
Cyanate crosslinking agent is methyl diphenylene diisocyanate (MDI).
Nonionic emulsifier is polyoxyethylene sorbitan fatty acid ester T-60/T-80, and alkyl phenol and ethylene oxide contract
Close object OP-9/OP-10, alkyl phenol polyoxyethylene ether TX-15, castor oil and ethylene oxide condensate EL60/EL80, it is preferred that
The nonionic emulsifier is polyoxyethylene sorbitan fatty acid ester T-60/T-80.
Cationic emulsifier is lauryl ammonium chloride, hexadecyltrimethylammonium chloride, cetyl pyridinium bromide, double tristearin
Base alkyl dimethyl ammonium chloride, it is preferred that the cationic emulsifier is hexadecyltrimethylammonium chloride and cetyl bromination
Pyridine.
System pH adjusting agent is hydrochloric acid, sulfuric acid, sulfurous acid, phosphoric acid, ethanedioic acid, it is preferred that the system pH adjusting agent
For sulfurous acid or ethanedioic acid.
Grafted monomers are the titanate coupling agents containing carbon-carbon double bond and hydrolysis, and (two is different for two oleic acid acyloxy of isopropyl
Octylphosphonic acid acyloxy) titanate esters, three oleic acid acyloxy titanate esters of isopropyl, it is preferred that the titanate coupling agent grafting
Monomer is three oleic acid acyloxy titanate esters of isopropyl.
Reproducibility sodium salt catalyst is sodium hydrogensulfite, sodium pyrosulfite, it is preferred that the reproducibility sodium salt catalyst
For sodium pyrosulfite.
The polyvinyl methyl ethermaleic anhydride aqueous solution that latex agglomeration agent is 5%, 4% hydroxyethyl cellulose aqueous solution, 4% polyethylene
Alcohol (model 1788) aqueous solution, it is preferred that the polyvinyl methyl ethermaleic anhydride aqueous solution that the latex agglomeration agent is 5%.
Anti-aging agent is N- octyl-N, the compound (trade name: 8PPD) of-phenyl-β-p-phenylenediamine and anti-aging agent RD, benzene second
Alkylene phenol, 2,6- xylenols, N, N ,-diphenyl-para-phenylene diamine, it is preferred that the anti-aging agent is N- octyl-N ,-benzene
The compound of base-β-p-phenylenediamine and anti-aging agent RD.
A kind of preparation method of the above-mentioned SBR styrene-butadiene latex for modified emulsifying asphalt, which is characterized in that preparation step
Are as follows:
1) cross-linked graft styrene-butadiene latex is concentrated
1.1 are added 1500 or 1502 general SBR emulsions of synthesis by raw material proportioning in a kettle；
1.2 are successively added emulsification isproportionated potassium rosinate or fatty acid potassium soap by raw material proportioning under stiring, and peroxide causes
Agent, polyisocyanates or polyallyl class crosslinking agent, titanate coupling agent grafted monomers, reproducibility sodium salt catalyst；
1.3 stir at 25 DEG C ~ 35 DEG C and make within 0.5 ~ 1 hour material is fully dispersed to be uniformly warming up to 60 DEG C ~ 80 DEG C, and reaction 3 ~ 6 is small
When obtain cross-linked graft SBR emulsion；
1.4 are added latex agglomeration agent by raw material proportioning, stir 10min ~ 30min；
1.5 are added anti-aging agent by raw material proportioning；
1.6 carry out vacuum distillation concentrate, and reaction kettle vacuum degree is 0.06MPa ~ 0.08MPa, and vapo(u)rizing temperature is controlled 75 DEG C ~ 80
DEG C, stop when latex concentration reaches 40% ~ 60%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
Nonionic emulsifier is added by raw material proportioning in reaction kettle after the completion of 2.1 steps 1.6, stirs 10 min ~ 15min；
2.2 are added cationic emulsifier by raw material proportioning, stir 10 min ~ 15min；
2.3 by raw material proportioning be added system pH adjusting agent, adjust pH after 2 ~ 5 to obtain the final product.
Preferably, it is warming up to 66 DEG C ~ 73 DEG C in the step 1.3, obtains cross-linked graft butadiene-styrene rubber cream within reaction 3 ~ 4 hours
Liquid.
Compared with prior art, a kind of SBR styrene-butadiene latex and preparation method thereof for modified emulsifying asphalt of the invention
Possessed beneficial effect is: for the present invention using the poly- styrene-butadiene latex of (5 DEG C) creams of low temperature as raw material, low temperature emulsion polymerized styrene butadiene rubber is one
The general synthesizing butadiene styrene rubber of kind, technical performance are stablized, and latex raw material is easy.General synthesis styrene-butadiene latex is through polyisocyanates
It is tensile strength, high temperature resistance, anti-aging property, compatible with pitch studies on asphaltene component or after the crosslinking of polyallyl class
Property is all significantly improved, and SBR styrene-butadiene latex of the present invention is used for emulsified asphalt is modified, the heat-resisting quantity of modified emulsifying asphalt
Can, glue toughness, toughness, ageing resistance can also improve significantly.General synthesis styrene-butadiene latex is grafted titanate coupling agent list
After body, ageing resistance can be remarkably reinforced with the compatibility of other materials, with the adhesiveness of inorganic mineral aggregate, and the present invention is changed
Property agent for emulsified asphalt it is modified, ageing resistance, stability, modified pitch and the stone mineral aggregate of modified emulsifying asphalt pitch
Adhesive property can be obviously improved.
Specific embodiment
The present invention will be further described combined with specific embodiments below, and wherein embodiment 1 is best implements.
Embodiment 1
1) the vulcanization graft modification of general synthesizing butadiene styrene rubber lotion
1.1 are added 2791 grams of the 1500 type SBR emulsion that solid content is 21.5% in a kettle, open stirring, revolving speed is
150r/min；
80 grams of isproportionated potassium rosinate of 1.2 25% concentration of addition, 2 grams of benzoyl peroxide, methyl diphenylene diisocyanate
(MDI) 20 grams, 15 grams of titanate esters of two oleic acid acyloxy of isopropyl (diisooctyl phosphoric acid acyloxy), the sodium pyrosulfite of 1% concentration
30 grams of aqueous solution；
1.3 add after stir 45min under the conditions of 30 DEG C, speed of agitator 150r/min, make material it is fully dispersed uniformly.It is warming up to
70 DEG C, 3.5 hours are reacted under the conditions of 70 DEG C to get cross-linked graft SBR emulsion；
1.4 are slowly added into 15 grams of polyvinyl methyl ethermaleic anhydride aqueous solution of latex agglomeration agent 5%, stir 15min, keep latex agglomeration abundant；
1.5 are added anti-aging agent N- octyl-N, the compound (trade name: 8PPD) 1.9 of-phenyl-β-p-phenylenediamine and anti-aging agent RD
Gram；
1.6 open heating, open vacuum, carry out decompression and are distilled and concentrated, and reaction kettle vacuum degree is 0.08MPa, vapo(u)rizing temperature
Control can stop vacuum distillation dehydration at 80 DEG C when latex concentration reaches 55%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
2.1 are added nonionic emulsifier polyoxyethylene sorbitan rouge in concentration grafting styrene-butadiene latex (1090 grams) reaction kettle
24 grams of type of fat acid esters T-60, stirring 12min is added, keeps emulsifier fully dispersed uniformly；
2.2 26 grams of cationic emulsifier hexadecyltrimethylammonium chloride are added into reaction kettle, add stirring 13min, make cream
Agent is fully dispersed uniformly；
2.3 8 grams of system pH adjusting agent sulfurous acid is added into reaction kettle, detects pH=4.
Embodiment 2
1) the vulcanization graft modification of general synthesizing butadiene styrene rubber lotion
1.1 are added 2927 grams of the 1502 type SBR emulsion that solid content is 20.5% in a kettle, open stirring, revolving speed is
240r/min；
60 grams of fatty acid potassium soap of 1.2 20% concentration of addition, 4.8 grams of di-isopropylbenzene hydroperoxide, toluene di-isocyanate(TDI) (TDI)
11 grams, three 41 grams of oleic acid acyloxy titanate esters of isopropyl, 20 grams of the aqueous solution of sodium bisulfite of 1% concentration；
1.3 add after stir 50min under the conditions of 27 DEG C, speed of agitator 240r/min, make material it is fully dispersed uniformly.It is warming up to
66 DEG C, 4 hours are reacted under the conditions of 70 DEG C to get cross-linked graft SBR emulsion；
1.4 are slowly added into 26 grams of hydroxyethyl cellulose aqueous solution of latex agglomeration agent 4%, stir 12min, keep latex agglomeration abundant；
1.5 be added anti-aging agent N, N, 0.8 gram of-diphenyl-para-phenylene diamine；
1.6 open heating, open vacuum, carry out decompression and are distilled and concentrated, and reaction kettle vacuum degree is 0.08MPa, vapo(u)rizing temperature
Control can stop vacuum distillation dehydration at 78 DEG C when latex concentration reaches 50%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
2.1 are added nonionic emulsifier alkyl phenol polyoxyethylene ether TX- in concentration grafting styrene-butadiene latex (1200 grams) reaction kettle
15 18 grams of types add stirring 13min, keep emulsifier fully dispersed uniformly；
2.2 32 grams of cationic emulsifier cetyl pyridinium bromide are added into reaction kettle, add stirring 12min, make emulsifier
It is fully dispersed uniform；
2.3 16 grams of system pH adjusting agent ethanedioic acid is added into reaction kettle, detects pH=4.
Embodiment 3
1) the vulcanization graft modification of general synthesizing butadiene styrene rubber lotion
1.1 are added 2715 grams of the 1502 type SBR emulsion that solid content is 22.1% in a kettle, open stirring, revolving speed is
150r/min；
100 grams of isproportionated potassium rosinate of 1.2 25% concentration of addition, 1.5 grams of cumyl peroxide, the different melamine of triallyl
The coke of 14 grams of acid esters (TAIC), 18 grams of titanate esters of two oleic acid acyloxy of isopropyl (diisooctyl phosphoric acid acyloxy), 1% concentration is sub-
30 grams of aqueous sodium persulfate solution；
1.3 add after stir 40min under the conditions of 32 DEG C, speed of agitator 180r/min, make material it is fully dispersed uniformly.It is warming up to
73 DEG C, 3 hours are reacted under the conditions of 73 DEG C to get cross-linked graft SBR emulsion；
1.4 are slowly added into 15 grams of aqueous solution of polyvinyl alcohol (model 1788) of latex agglomeration agent 4%, stir 18min, keep latex attached
It is poly- abundant；
1.5 are added 2.6 grams of anti-aging agent styrenated phenol；
1.6 open heating, open vacuum, carry out decompression and are distilled and concentrated, and reaction kettle vacuum degree is 0.07MPa, vapo(u)rizing temperature
Control can stop vacuum distillation dehydration at 79 DEG C when latex concentration reaches 45%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
2.1 are added nonionic emulsifier alkyl phenol and ethylene oxide condensation in concentration grafting styrene-butadiene latex (1333 grams) reaction kettle
32 grams of object OP-10 type adds stirring 12min, keeps emulsifier fully dispersed uniformly；
2.2 20 grams of cationic emulsifier cetyl pyridinium bromide are added into reaction kettle, add stirring 13min, make emulsifier
It is fully dispersed uniform；
2.3 5 grams of system pH adjusting agent phosphatase 11 is added into reaction kettle, detects pH=3.
Embodiment 4
1) the vulcanization graft modification of general synthesizing butadiene styrene rubber lotion
1.1 are added 2791 grams of the 1502 type SBR emulsion that solid content is 21.5% in a kettle, open stirring, revolving speed is
160r/min；
36 grams of isproportionated potassium rosinate of 1.2 25% concentration of addition, 6 grams of benzoyl peroxide, methyl diphenylene diisocyanate
(MDI) 6 grams, 48 grams of titanate esters of two oleic acid acyloxy of isopropyl (diisooctyl phosphoric acid acyloxy), the sodium pyrosulfite of 1% concentration
12 grams of aqueous solution；
1.3 add after stir 30min under the conditions of 35 DEG C, speed of agitator 160r/min, make material it is fully dispersed uniformly.It is warming up to
80 DEG C, 3 hours are reacted under the conditions of 80 DEG C to get cross-linked graft SBR emulsion；
1.4 are slowly added into 30 grams of polyvinyl methyl ethermaleic anhydride aqueous solution of latex agglomeration agent 5%, stir 30min, keep latex agglomeration abundant；
1.5 be added anti-aging agent N, N, 0.3 gram of-diphenyl-para-phenylene diamine；
1.6 open heating, open vacuum, carry out decompression and are distilled and concentrated, and reaction kettle vacuum degree is 0.06MPa, vapo(u)rizing temperature
Control can stop vacuum distillation dehydration at 75 DEG C when latex concentration reaches 60%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
2.1 are added nonionic emulsifier castor oil and ethylene oxide condensation in concentration grafting styrene-butadiene latex (1000 grams) reaction kettle
36 grams of object EL60 type adds stirring 10min, keeps emulsifier fully dispersed uniformly；
2.2 double 18 grams of the stearyldimethylammonium chlorides of cationic emulsifier are added into reaction kettle, add stirring 15min, make cream
Agent is fully dispersed uniformly；
2.3 9 grams of system pH adjusting agent sulfuric acid is added into reaction kettle, detects pH=2.
Embodiment 5
1) the vulcanization graft modification of general synthesizing butadiene styrene rubber lotion
1.1 are added 2791 grams of the 1502 type SBR emulsion that solid content is 21.5% in a kettle, open stirring, revolving speed is
160r/min；
120 grams of isproportionated potassium rosinate of 1.2 25% concentration of addition, 0.6 gram of benzoyl peroxide, diphenylmethane diisocyanate
30 grams of ester (MDI), 6 grams of metatitanic acid of two oleic acid acyloxy of isopropyl (diisooctyl phosphoric acid acyloxy), the sodium pyrosulfite of 1% concentration
60 grams of aqueous solution；
1.3 add after stir 60min under the conditions of 25 DEG C, speed of agitator 160r/min, make material it is fully dispersed uniformly.It is warming up to
60 DEG C, 6 hours are reacted under the conditions of 60 DEG C to get cross-linked graft SBR emulsion；
1.4 are slowly added into 12 grams of polyvinyl methyl ethermaleic anhydride aqueous solution of latex agglomeration agent 5%, stir 15min, keep latex agglomeration abundant；
1.5 be added anti-aging agent N, N, 3.0 grams of-diphenyl-para-phenylene diamine；
1.6 open heating, open vacuum, carry out decompression and are distilled and concentrated, and reaction kettle vacuum degree is 0.08MPa, vapo(u)rizing temperature
Control can stop vacuum distillation dehydration at 80 DEG C when latex concentration reaches 60%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
2.1 are added nonionic emulsifier castor oil and ethylene oxide condensation in concentration grafting styrene-butadiene latex (1000 grams) reaction kettle
12 grams of object EL60 type adds stirring 15min, keeps emulsifier fully dispersed uniformly；
2.2 double 36 grams of the stearyldimethylammonium chlorides of cationic emulsifier are added into reaction kettle, add stirring 10min, make cream
Agent is fully dispersed uniformly；
2.3 3 grams of system pH adjusting agent sulfuric acid is added into reaction kettle, detects pH=2.
The preparation of 1 ~ 5 modified emulsifying asphalt of embodiment and technical indicator analysis:
Emulsified asphalt prepares material: 600 grams of 70# heavy traffic paving asphalt, 380 grams of deionized water, and emulsifier cetyl trimethyl chlorination
20 grams of ammonium, hydrochloric acid；
Emulsifier is add to deionized water, with hydrochloric acid tune pH=2 ~ 3,75 ~ 80 DEG C is heated to, is then added to preheated
In colloid mill, colloid mill is opened, 155 ~ 160 DEG C of 70# heavy traffic paving asphalt is would be heated to and is slowly added in colloid mill, add subsequent
Continuous circulation 5 minutes to get the emulsified asphalt for being 60% to solid content；
4% styrene-butadiene latex (based on butt) is added into emulsified asphalt obtained, stirs evenly and obtains modified emulsifying asphalt.
The analysis of modified emulsifying asphalt index is according to E20-2011 JTG " highway engineering pitch and Asphalt Mixture Experiment
Regulation " specified in corresponding test method carry out.It the results are shown in Table 1.
Comparative example 1
Emulsified asphalt is prepared with embodiment 1.
The styrene-butadiene latex (1502 type) that solid content is 22.0% is 40% by vacuum distillation to solid content, is then added non-
Ionic emulsifying agent polyoxyethylene sorbitan fatty acid ester T-60 type 3.5% is stirred 10 minutes, is then added cation emulsified
Agent hexadecyltrimethylammonium chloride 4% stirs 15 minutes, system pH adjusting agent ethanedioic acid is then added, until pH=4.
1502 type cation styrene-butadiene latex 4%(are added into emulsified asphalt based on butt), it stirs evenly, obtains modified milk
Change pitch.
The analysis of modified emulsifying asphalt index is according to E20-2011 JTG " highway engineering pitch and Asphalt Mixture Experiment
Regulation " specified in corresponding test method carry out.It the results are shown in Table 1.
1 modified emulsifying asphalt evaporated residue analysis indexes of table
。
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt, which is characterized in that parts by weight of raw materials composition are as follows: solid content 40%
100 parts based on dry glue weight of ~ 60% cross-linked graft SBR emulsion, 2 ~ 6 parts of nonionic emulsifier, cationic emulsifier 3 ~ 6
Part, 0.5 ~ 1.5 part of system pH adjusting agent；Wherein the cross-linked graft SBR emulsion is prepared in mass ratio by following raw material
Form: 1500 or 1502 SBR emulsions are based on dry glue weight, emulsifier isproportionated potassium rosinate or fatty acid potassium soap, peroxide
Compound initiator, polyisocyanates crosslinking agent or polyallyl class crosslinking agent, titanate coupling agent grafted monomers, reproducibility
Sodium salt catalyst, latex agglomeration agent, anti-aging agent mass ratio be 100:1.0 ~ 5.0:0.1 ~ 1.0:1.0 ~ 5.0:1.0 ~ 8.0:
0.02 ~ 0.10:2 ~ 5:0.05 ~ 0.50.
2. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
Nonionic emulsifier is polyoxyethylene sorbitan fatty acid ester T-60/T-80.
3. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
Cationic emulsifier is hexadecyltrimethylammonium chloride and cetyl pyridinium bromide.
4. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
System pH adjusting agent is sulfurous acid or ethanedioic acid.
5. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
Titanate coupling agent grafted monomers are three oleic acid acyloxy titanate esters of isopropyl.
6. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
Reproducibility sodium salt catalyst is sodium pyrosulfite.
7. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
The polyvinyl methyl ethermaleic anhydride aqueous solution that latex agglomeration agent is 5%.
8. a kind of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 1, it is characterised in that: described
Anti-aging agent is N- octyl-N ,-phenyl-β-p-phenylenediamine and anti-aging agent RD compound.
9. a kind of preparation method of the described in any item SBR styrene-butadiene latexes for modified emulsifying asphalt of claim 1 ~ 8, special
Sign is, preparation step are as follows:
1) cross-linked graft styrene-butadiene latex is concentrated
1.1 are added 1500 or 1502 general SBR emulsions of synthesis by raw material proportioning in a kettle；
1.2 are successively added emulsification isproportionated potassium rosinate or fatty acid potassium soap by raw material proportioning under stiring, and peroxide causes
Agent, polyisocyanates or polyallyl class crosslinking agent, titanate coupling agent grafted monomers, reproducibility sodium salt catalyst；
1.3 stir at 25 DEG C ~ 35 DEG C and make within 0.5 ~ 1 hour material is fully dispersed to be uniformly warming up to 60 DEG C ~ 80 DEG C, and reaction 3 ~ 6 is small
When obtain cross-linked graft SBR emulsion；
1.4 are added latex agglomeration agent by raw material proportioning, stir 10min ~ 30min；
1.5 are added anti-aging agent by raw material proportioning；
1.6 carry out vacuum distillation concentrate, and reaction kettle vacuum degree is 0.06MPa ~ 0.08MPa, and vapo(u)rizing temperature is controlled 75 DEG C ~ 80
DEG C, stop when latex concentration reaches 40% ~ 60%；
2) the ionic conversion of cross-linked graft styrene-butadiene latex is concentrated
Nonionic emulsifier is added by raw material proportioning in reaction kettle after the completion of 2.1 steps 1.6, stirs 10 min ~ 15min；
2.2 are added cationic emulsifier by raw material proportioning, stir 10 min ~ 15min；
2.3 by raw material proportioning be added system pH adjusting agent, adjust pH after 2 ~ 5 to obtain the final product.
10. a kind of preparation method of SBR styrene-butadiene latex for modified emulsifying asphalt according to claim 9, feature
It is: is warming up to 66 DEG C ~ 73 DEG C in the step 1.3, obtains cross-linked graft SBR emulsion within reaction 3 ~ 4 hours.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111454663A (en) * | 2020-04-28 | 2020-07-28 | 广西禹杰防水防腐材料有限公司 | Non-cured rubber asphalt waterproof coating and preparation method thereof |
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| CN101200596A (en) * | 2006-12-12 | 2008-06-18 | 中国石油天然气股份有限公司 | Powder styrene butadiene rubber polymeric modified asphalt and preparation method thereof |
| CN104448663A (en) * | 2013-09-18 | 2015-03-25 | 中国石油天然气股份有限公司 | Method for preparing environment-friendly low-smoke flame-retardant powdered butadiene styrene rubber |
| CN105837750A (en) * | 2016-04-28 | 2016-08-10 | 常州市灵达化学品有限公司 | Styrene-butadiene latex for road emulsified asphalt modification and preparation method thereof |
| KR101950639B1 (en) * | 2018-03-09 | 2019-02-20 | 정의우 | Reforming concrete composition of superior waterproofing |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200596A (en) * | 2006-12-12 | 2008-06-18 | 中国石油天然气股份有限公司 | Powder styrene butadiene rubber polymeric modified asphalt and preparation method thereof |
| CN104448663A (en) * | 2013-09-18 | 2015-03-25 | 中国石油天然气股份有限公司 | Method for preparing environment-friendly low-smoke flame-retardant powdered butadiene styrene rubber |
| CN105837750A (en) * | 2016-04-28 | 2016-08-10 | 常州市灵达化学品有限公司 | Styrene-butadiene latex for road emulsified asphalt modification and preparation method thereof |
| KR101950639B1 (en) * | 2018-03-09 | 2019-02-20 | 정의우 | Reforming concrete composition of superior waterproofing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111454663A (en) * | 2020-04-28 | 2020-07-28 | 广西禹杰防水防腐材料有限公司 | Non-cured rubber asphalt waterproof coating and preparation method thereof |
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