CN106928733B - A kind of solution crosslinked foaming EVA modified pitch and preparation method thereof - Google Patents
A kind of solution crosslinked foaming EVA modified pitch and preparation method thereof Download PDFInfo
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- CN106928733B CN106928733B CN201710277646.8A CN201710277646A CN106928733B CN 106928733 B CN106928733 B CN 106928733B CN 201710277646 A CN201710277646 A CN 201710277646A CN 106928733 B CN106928733 B CN 106928733B
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- foaming eva
- solution
- pitch
- eva
- crosslinked foaming
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to modified asphalt technology fields, and in particular to a kind of solution crosslinked foaming EVA modified pitch and preparation method thereof.The each component of the solution crosslinked foaming EVA modified pitch are as follows: pitch 88wt%~95wt% solves crosslinked foaming EVA modifying agent 5wt%~12wt%；The each component of the solution crosslinked foaming EVA modifying agent are as follows: foaming EVA 80wt%~90wt%, steel-making slag powder 10wt%~20wt%.The present invention destroys the cross-linked structure of foaming EVA by Mechanochemistry, and so that it is ground into fine particle in turn can be evenly dispersed in pitch, improves modifying agent to the improvement of asphalt performance；The present invention is not only reduced the production cost of modified pitch, improves the high temperature performance of pitch, extend the service life of bituminous pavement using solution crosslinked foaming EVA as asphalt modifier, and solves the problems, such as that discarded crosslinked foaming EVA is difficult to recycle.
Description
Technical field
The invention belongs to modified asphalt technology fields, and in particular to a kind of solution crosslinked foaming EVA modified pitch and its preparation
Method.
Background technique
Bituminous pavement has become the preferred road surface types of high-grade highway with its excellent pavement performance.Due to plain asphalt
Softening point it is low, low temperature extensibility is poor, elastic recovery rate is small, be used as bituminous concrete cementitious matter easily lead to road surface appearance
The diseases such as track, crack have been unable to meet the construction demand of high-grade highway.In order to improve the service performance of bituminous pavement, gather
Polymer modified pitch is widely used.Can be used as asphalt modifier polymer mainly include thermoplastic elastomer (TPE), rubber and
Plastics etc., and being widely used with high molecular material, can all generate a large amount of waste plastic and rubber every year.Gathered using discarded
It closes object to be modified pitch, on the one hand can reduce the cost of modified pitch, be on the other hand conducive to returning for waste polymer
It receives and recycles.
(EVA) foamed material of the ethylene-vinyl acetate copolymer as made from moulded from foam technique has good slow
The advantages that punching, antidetonation, heat-insulated, moisture-proof, resist chemical, is widely used in the systems such as production sound insulation, vibration damping, heat preservation, toy, sport footwear
Product.During EVA product is foamed in production, largely discarded leftover pieces can be generated by being limited by product shape and size.As can
Foaming EVA is discarded into leftover pieces and is used for asphalt modification, not only improves the performance for improving pitch, and is conducive to protect environment and saving
Resource.However, being difficult to be ground into fine particle, and be used for pitch and change since foaming EVA has formd lightly crosslinked structure
Property, it, can not be evenly dispersed in pitch because its molecular weight is big, creeping is poor, the promotion of asphalt performance is extremely limited, therefore mesh
Preceding foaming EVA still cannot function as asphalt modifier use.
Summary of the invention
The present invention is in view of the deficiencies of the prior art, and it is an object of the present invention to provide a kind of solution crosslinked foaming EVA modified pitch and its system
Preparation Method.
For achieving the above object, the technical solution adopted by the present invention are as follows:
A kind of solution crosslinked foaming EVA modified pitch is made of pitch reconciliation crosslinked EVA modifying agent, and each raw material component presses matter
Measure percentages are as follows: pitch 88%~95% solves crosslinked foaming EVA modifying agent 5%~12%；The solution crosslinked foaming EVA changes
Property agent be by foaming EVA and steel-making slag powder through power chemistry solution be crosslinked preparation gained.
In above scheme, each component of the solution crosslinked foaming EVA modifying agent is by mass percentage are as follows: foaming EVA
80%~90%, steel-making slag powder 10%~20%.
In above scheme, the foaming EVA is the discarded leftover pieces of generation during production foaming EVA product.
In above scheme, the fineness of the steel-making slag powder is 100~200 mesh.
In above scheme, the solution crosslinked foaming EVA modifying agent the preparation method comprises the following steps: foaming EVA, steel-making slag powder are added to
The crosslinking of power chemistry solution is carried out in mixer to crush gained blend after power chemistry solution is crosslinked, be sieved, and is made thin
Spend the solution crosslinked foaming EVA modifying agent more than 40 mesh.
In above scheme, the technique of the power chemistry solution crosslinking are as follows: the temperature setting of mixer is 170 DEG C, and revolving speed is
30r/min, the time for solving crosslinking is 20~25min.
In above scheme, the pitch is bi tumenf orr oad, and needle penetration is 60~120dmm, and softening point is 45~50
℃。
The preparation method of above-mentioned solution crosslinked foaming EVA modified pitch, includes the following steps:
(1) pitch is chosen by each group distribution ratio conciliate crosslinked foaming EVA modifying agent；
(2) pitch is heated to 170~180 DEG C, starts high shear homomixer, solution crosslinked foaming EVA is added thereto
Modifying agent, keeping temperature is 170~180 DEG C, is stirred 60 minutes under the revolving speed of 5000rpm, and solution crosslinked foaming EVA is prepared
Modified pitch.
Beneficial effects of the present invention:
(1) present invention carries out the crosslinking of power chemistry solution after mixing using steel-making slag powder with foaming EVA, and steel-making slag powder is handed in power chemistry solution
It can play the role of providing local shear forces during connection, effectively improve the solution cross-linking efficiency and solution crosslinking degree of foaming EVA；
Simultaneously steel-making slag powder addition, make solve crosslinked EVA be not only easy to crush again will not stick to each other, solve understanding crosslinked EVA be difficult to crush
With the problem that cannot form fine particle shape modifying agent, further, since steel-making slag powder is by calcium, iron, silicon, magnesium and a small amount of aluminium, manganese, phosphorus
Equal oxides composition, containing the basic components such as free calcium oxide and fluor-apatite, therefore, in solution crosslinked foaming EVA modified pitch
With hot mixing of gathering materials for mixture during, steel-making slag powder can improve solution crosslinked foaming EVA modified pitch and the adhesiveness gathered materials,
To improve the anti-water damage property of bituminous pavement；
(2) present invention carries out solution crosslinking to foaming EVA using mixer, and the friendship of foaming EVA is destroyed by Mechanochemistry
It is coupled structure, is crushed it can and forms fine particle, and then can be evenly dispersed in pitch, effectively improve modifying agent to pitch
The improvement of performance；
(3) present invention not only reduces being produced into for modified pitch using solution crosslinked foaming EVA as asphalt modifier
This, effectively increases the high temperature performance of pitch, is conducive to extend the service life of bituminous pavement, and solve discarded crosslinking
Foaming EVA is difficult to the problem recycled.
Detailed description of the invention
Fig. 1 is solution crosslinked foaming EVA modifying agent pictorial diagram prepared by the present invention.
Fig. 2 is the pictorial diagram of solution crosslinked foaming EVA after crushed described in comparative example.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of solution crosslinked foaming EVA modifying agent, is prepared via a method which to obtain:
(1) by mass percent shared by each raw material are as follows: foaming EVA80%, steel-making slag powder 20% choose foaming EVA and steel slag
Powder is uniformly mixed；
(2) above-mentioned crosslinked foaming EVA, steel slag powder mixture are added in mixer and carry out the crosslinking of power chemistry solution, mixing
The temperature setting of machine is 170 DEG C, and revolving speed is set as 30r/min, and the time for solving crosslinking is 20min；
(3) the above-mentioned foaming EVA through the crosslinking of power chemistry solution, steel-making slag powder blend are placed in pulverizer, are crushed, sieving,
Solution crosslinked EVA modifying agent (as shown in Figure 1) of the fineness more than 40 mesh is made.
Embodiment 2
A kind of solution crosslinked foaming EVA modifying agent, is prepared via a method which to obtain:
(1) by mass percent shared by each raw material are as follows: foaming EVA90%, steel-making slag powder 10% choose foaming EVA and steel slag
Powder is uniformly mixed；
(2) above-mentioned crosslinked foaming EVA, steel slag powder mixture are added in mixer and carry out the crosslinking of power chemistry solution, mixing
The temperature setting of machine is 170 DEG C, and revolving speed is set as 30r/min, and the time for solving crosslinking is 25min；
(3) the above-mentioned foaming EVA through the crosslinking of power chemistry solution, steel-making slag powder blend are placed in pulverizer, are crushed, sieving,
Solution crosslinked EVA modifying agent of the fineness more than 40 mesh is made.
Embodiment 3
By 91.5 parts of bi tumenf orr oads (25 DEG C of needle penetrations are 73dmm, softening point is 48.2 DEG C, 5 DEG C of ductility 0.6cm)
180 DEG C are heated to, solution crosslinked foaming EVA modifying agent prepared in 8.5 parts of embodiments 1 is added, after to be modified dose is all added,
Keeping temperature is 175 DEG C ± 5 DEG C, starts high-speed shearing machine, stirs 60min under 5000rpm revolving speed, obtains solution crosslinked EVA
Modified pitch.After tested, the softening point for solving crosslinked EVA modified pitch is 69.7 DEG C, 25 DEG C of needle penetrations are 44dmm, 5 DEG C of ductilities are
7.6cm.Compared with basic asphalt, solution crosslinked EVA modified high-temperature behavior (softening point) and cryogenic property (5 DEG C of ductilities) have aobvious
Writing improves.
Embodiment 4
89 parts of bi tumenf orr oads (25 DEG C of needle penetrations are 73dmm, softening point is 48.2 DEG C, 5 DEG C of ductility 0.6cm) is added
Solution crosslinked foaming EVA modifying agent prepared in 11 parts of embodiments 1 is added to 180 DEG C in heat, after to be modified dose is all added, protects
Holding temperature is 175 DEG C ± 5 DEG C, starts high-speed shearing machine, stirs 60min under 5000rpm revolving speed, obtains solution crosslinked EVA and changes
Property pitch.After tested, the softening point for solving crosslinked EVA modified pitch is 77.4 DEG C, 25 DEG C of needle penetrations are 38dmm, 5 DEG C of ductilities are
8.2cm.Compared with basic asphalt, solution crosslinked EVA modified high-temperature behavior (softening point) and cryogenic property (5 DEG C of ductilities) have aobvious
Writing improves.
Embodiment 5
90 parts of bi tumenf orr oads (25 DEG C of needle penetrations are 93dmm, softening point is 45.4 DEG C, 5 DEG C of ductility 1.1cm) is added
Solution crosslinked EVA modifying agent prepared in 10 parts of embodiments 2 is added to 175 DEG C in heat, after to be modified dose is all added, keeps temperature
Degree is 175 DEG C ± 5 DEG C, starts high-speed shearing machine, stirs 60min under 5000rpm revolving speed, obtains the modified drip of solution crosslinked EVA
It is green.After tested, the softening point for solving crosslinked EVA modified pitch is 76.8 DEG C, 25 DEG C of needle penetrations are 48dmm, 5 DEG C of ductilities are
10.5cm.Compared with basic asphalt, solution crosslinked EVA modified high-temperature behavior (softening point) and cryogenic property (5 DEG C of ductilities) have
It significantly improves.
Embodiment 6
By 94.5 parts of bi tumenf orr oads (25 DEG C of needle penetrations are 93dmm, softening point is 45.4 DEG C, 5 DEG C of ductility 1.1cm)
175 DEG C are heated to, solution crosslinked EVA modifying agent prepared in 5.5 parts of embodiments 2 is added, after to be modified dose is all added, is kept
Temperature is 175 DEG C ± 5 DEG C, starts high-speed shearing machine, stirs 60min under 5000rpm revolving speed, and it is modified to obtain solution crosslinked EVA
Pitch.After tested, the softening point for solving crosslinked EVA modified pitch is 63.2 DEG C, 25 DEG C of needle penetrations are 56dmm, 5 DEG C of ductilities are
7.0cm.Compared with basic asphalt, solution crosslinked EVA modified high-temperature behavior (softening point) and cryogenic property (5 DEG C of ductilities) have aobvious
Writing improves.
Comparative example
A kind of solution crosslinked foaming EVA, is prepared via a method which to obtain: by crosslinked foaming EVA be added in mixer into
The crosslinking of row power chemistry solution, the temperature setting of mixer are 170 DEG C, and revolving speed is set as 30r/min, and the time for solving crosslinking is 25min.
It through power chemistry solution crosslinked foaming EVA adhesion Cheng Yituan, can not directly crush, it is pressed into sheet in hot press, is cut after cooling
Growth bar shaped, is then added into pulverizer and crushes, cannot still obtain powdered solution crosslinked foaming EVA modifying agent, specifically
Ground material object is as shown in Fig. 2, it is thus impossible to be used for asphalt modification.
Obviously, above-described embodiment is only intended to clearly illustrate made example, and is not the limitation to embodiment.For
For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious changes or variations therefore amplified
Within the protection scope of the invention.
Claims (8)
1. a kind of solution crosslinked foaming EVA modified pitch, which is characterized in that be made of pitch reconciliation crosslinked EVA modifying agent, each raw material
Component is by mass percentage are as follows: pitch 88% ~ 95% solves crosslinked foaming EVA modifying agent 5% ~ 12%；The solution crosslinked foaming EVA
Modifying agent is to be crosslinked preparation gained through power chemistry solution by foaming EVA and steel-making slag powder.
2. solution crosslinked foaming EVA modified pitch according to claim 1, which is characterized in that the solution crosslinked foaming EVA changes
Property agent each component by mass percentage are as follows: foaming EVA 80% ~ 90%, steel-making slag powder 10% ~ 20%.
3. solution crosslinked foaming EVA modified pitch according to claim 1 or 2, which is characterized in that the foaming EVA makes a living
Produce the discarded leftover pieces generated during foaming EVA product.
4. solution crosslinked foaming EVA modified pitch according to claim 1 or 2, which is characterized in that the fineness of the steel-making slag powder
For 100 ~ 200 mesh.
5. solution crosslinked foaming EVA modified pitch according to claim 1, which is characterized in that the solution crosslinked foaming EVA changes
Property agent carry out the crosslinking of power chemistry solution the preparation method comprises the following steps: foaming EVA, steel-making slag powder are added in mixer, power chemistry solution crosslinking
After, gained blend is crushed, is sieved, solution crosslinked foaming EVA modifying agent of the fineness more than 40 mesh is made.
6. solution crosslinked foaming EVA modified pitch according to claim 5, which is characterized in that the power chemistry solution crosslinking
Technique are as follows: the temperature setting of mixer is 170 DEG C, revolving speed 30r/min, and the time for solving crosslinking is 20 ~ 25min.
7. solution crosslinked foaming EVA modified pitch according to claim 1, which is characterized in that the pitch is road petroleum
Pitch, needle penetration are 60 ~ 120dmm, and softening point is 45 ~ 50 DEG C.
8. the preparation method of any solution crosslinked foaming EVA modified pitch of claim 1 ~ 7, which is characterized in that including as follows
Step:
(1) pitch is chosen by each group distribution ratio conciliate crosslinked foaming EVA modifying agent；
(2) pitch is heated to 170 ~ 180 DEG C, starts high shear homomixer, it is modified that solution crosslinked foaming EVA is added thereto
Agent, keeping temperature is 170 ~ 180 DEG C, is stirred 60 minutes under the revolving speed of 5000 rpm, and it is modified that solution crosslinked foaming EVA is prepared
Pitch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277646.8A CN106928733B (en) | 2017-04-25 | 2017-04-25 | A kind of solution crosslinked foaming EVA modified pitch and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710277646.8A CN106928733B (en) | 2017-04-25 | 2017-04-25 | A kind of solution crosslinked foaming EVA modified pitch and preparation method thereof |
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| CN106928733B true CN106928733B (en) | 2019-06-25 |
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| CN108384035A (en) * | 2018-02-01 | 2018-08-10 | 武汉理工大学 | A kind of hud typed slag base composite modified asphalt particle and preparation method thereof |
| CN111116980B (en) * | 2019-12-11 | 2022-12-16 | 肇庆国立新材料有限公司 | Controllable cracking process of crosslinked EVA material |
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| WO2006107179A2 (en) * | 2005-04-06 | 2006-10-12 | Jung Do Huh | Compositions and manufacturing methods of bitumen modifiers having complex functionality |
| CN105058670A (en) * | 2015-07-15 | 2015-11-18 | 福建豪威节能科技发展有限公司 | Regeneration cloth-manufacturing process for foamed EVA wasted materials |
| CN105385179B (en) * | 2015-12-28 | 2021-04-23 | 天津海泰环保科技发展股份有限公司 | Waste sole rubber powder modified asphalt and preparation method thereof |
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