CN107828221A

CN107828221A - A kind of High-and-low-temperaresistant resistant asphalt and its processing method for adding hexadecanol modifying agent

Info

Publication number: CN107828221A
Application number: CN201711052920.8A
Authority: CN
Inventors: 莫春妹
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2018-03-23

Abstract

The invention discloses a kind of High-and-low-temperaresistant resistant asphalt and its processing method for adding hexadecanol modifying agent.The High-and-low-temperaresistant resistant asphalt is using matrix pitch and butadiene-styrene rubber, powdery sulfur chloride, montmorillonite, leukotrienes, glycerine water solution, hexadecanol as raw material, first matrix pitch is heated, then leukotrienes and powdery sulfur chloride and butadiene-styrene rubber and montmorillonite are added, pitch is modified, pass through speed lapping technique again, glycerine water solution and hexadecanol modifying agent are added after being uniformly dispersed, further its stability is modified.Finally cool, can obtain product by later stage development.The modified bitumen product of preparation is not easy lamination occur, and work flow is short, has preferable application prospect.

Description

A kind of High-and-low-temperaresistant resistant asphalt and its processing method for adding hexadecanol modifying agent

Technical field

The present invention relates to a kind of road asphalt, more particularly to a kind of high and low temperature resistance pitch and its system for adding modifying agent Preparation Method, belong to pitch manufacture field.

Background technology

In recent years, bituminous composition is widely used in paving roadways, increasingly improve with the requirement to pavement of road, it is necessary to There are excellent intensity, resistance to mobility, the asphalt roads of abrasion performance, it is therefore necessary to prepare higher, modulus of elasticity of softening point etc. The bituminous composition of high mechanical strength with various copolymerization agent modifying agent, it is necessary to be improved.

Some modifying agent of addition and the compatibility of pitch are very poor, cause asphalt performance to reduce, using effect is affected. In terms of patent：CN201010522786.5 is a kind of wide area modified pitch technology of preparing, using powdered butadiene-styrene rubber as Modified dose, using Tissuemat E as the second modifying agent, the characteristic of high-melting-point and fusing point above fast melt by Tissuemat E, Modified pitch is possessed the performance of certain Tissuemat E, that is, improve the softening point of pitch, it is high using the low temperature of butadiene-styrene rubber Extension property, increase the low temperature ductility of modified pitch, belong to physical modification category, the compatibility presence of benzene rubber and pitch is asked When topic, i.e. thermmal storage, lamination occurs if stopping stirring.

It is above-mentioned in order to solve the problems, such as, i.e. modifying agent and the problem of separated from bitumen at high temperature, Japanese patent application publication No. 6- 329919 propose a kind of method, and this method includes being used together a kind of salt of ester or the ester with pitch, the ester be by by Prepared by the compound reaction of copolymer and hydroxyl prepared by ethylene unsaturated carboxylic acid and aromatic vinyl compound, Japan is specially Sharp publication number 7-157665 is disclosed using containing the asphalt modifier with acidic group and the oily molten polymer of base.Using this A little methods cause the property of bituminous composition somewhat to improve to some extent, and this area needs further to improve the dispersiveness of modifying agent.

The content of the invention

To overcome weak point of the prior art, it is an object of the invention to provide a kind of modified asphalt composite and its Preparation method.Its plasticity is modified in addition butadiene-styrene rubber, then stability is improved by glycerine water solution gelling agent and leukotrienes, most Further improve the dispersiveness of modifying agent by adding hexadecanol afterwards.

The modified asphalt composite of the present invention, includes following components with composition weight percentages：

Matrix pitch 90%-97%

Butadiene-styrene rubber 0.2%-6%

Powdery sulfur chloride 0.1%-6%

Montmorillonite 0.5%-1.5%

Leukotrienes 1%-4%

Glycerine water solution 0.2%-3%

Hexadecanol 0.5%-1.5%.

Matrix pitch for the present invention can be asphalt, bitumen, and its mixture with oil.It is above-mentioned Pitch is respectively comprising pitch as its key component.The specific example of pitch includes straight asphalt, half blown asphalt, blown asphalt Deng.For the present invention butadiene-styrene rubber be preferentially to select powder styrene butadiene rubber, be grafted on the basis of emulsion polymerized styrene butadiene rubber it is other Monomer, in addition to significantly improving the cryogenic property feature of pitch with butadiene-styrene rubber, powder styrene butadiene rubber can also be obviously improved for it The high-temperature behavior of pitch.

Glycerine and water quality ratio for the glycerine water solution of the present invention are 1：2-2：1 mixture.

A kind of preparation method of high and low temperature resistance pitch of the present invention, comprises the following steps：

(1) first petroleum pitch feedstock is poured into heating tank, it is carried out to be heated to flow regime；

(2) under stirring, appropriate leukotrienes and powdery sulfur chloride and butadiene-styrene rubber and montmorillonite are sequentially added；

Again with dispersing apparatus by said mixture speed lapping for a period of time, be uniformly dispersed；

(4) finally addition glycerine water solution and hexadecanol, rise temperature continue grinding distribution for a period of time；

(5) system is cooled to 160 DEG C, development a period of time in later stage can obtain product.

The preparation method of described high and low temperature resistance pitch, step (1) in, heating-up temperature is to 180-200 DEG C.

The preparation method of described high and low temperature resistance pitch, step (3) in, jitter time control in 1-3h.

The preparation method of described high and low temperature resistance pitch, step (4) in, temperature raise 220-260 DEG C, persistently divide Time control is dissipated in 1-3h.

The preparation method of described high and low temperature resistance pitch, step (5) in, in the case of being modified at the scene, after general Phase development needs 1-3h.

Dispersing apparatus used in this method can use mixing plant, cutter or colloid mill.

Preferentially, the storage time of modified pitch does not exceed typically 24 hours, and storage temperature is at 150-160 DEG C.

The present invention has following advantages and characteristic：

(1) preparation technology is simple, and cost is low；

(2) flow time is short, easily large-scale production.

Embodiment

Embodiment one：

Prepared pitch contains following component：

Asphalt 90%

Butadiene-styrene rubber 2%

Powdery sulfur chloride 1%

Montmorillonite 0.5%

Leukotrienes 4%

Glycerine water solution 2%

Hexadecanol 0.5%

Specific preparation method is as follows：

First take 9kg No. 70 asphalt to pour into heating tank, it is carried out to be heated to 180 DEG C, added rapidly under stirring Add 0.4kg leukotrienes, 0.1kg powdery sulfur chloride, 0.2kg butadiene-styrene rubber, 0.05kg montmorillonites, set with colloid mill is scattered It is standby that said mixture speed lapping 1h is finally added 0.2kg glycerine water solutions and 0.05k hexadecanols, raises 220 DEG C of temperature, Continue grinding distribution 1h, system is cooled to 160 DEG C, the modified pitch that can be processed after later stage development 1h is for using.

Embodiment two：

Prepared pitch contains following component：

Bitumen 91%

Butadiene-styrene rubber 1%

Powdery sulfur chloride 2%

Montmorillonite 1.5%

Leukotrienes 2%

Glycerine water solution 1%

Hexadecanol 1.5%

Specific preparation method is as follows：

First take 45.5kg No. 90 bitumens to pour into heating tank, it is carried out to be heated to 190 DEG C, it is rapid under stirring 1kg leukotrienes, 1kg powdery sulfur chloride, 0.5kg butadiene-styrene rubber powder, 0.75kg montmorillonites are added, is disperseed with cutter Said mixture speed lapping 2h is finally added 0.5kg glycerine water solutions and 0.75kg hexadecanols by equipment, raises temperature 240 DEG C, continue grinding distribution 2h, system is cooled to 160 DEG C, the modified pitch that can be processed after later stage development 2h is for making With.

Embodiment three：

Prepared pitch contains following component：

Asphalt and natural mixture of asphalt 97%

Butadiene-styrene rubber 0.3%

Alkane powdery sulfur chloride 0.5%

Montmorillonite 0.5%

Leukotrienes 1%

Glycerine water solution 0.2%

Hexadecanol 0.5%

Specific preparation method is as follows：

First take 194kg No. 110 asphalt and natural mixture of asphalt to pour into heating tank, it carried out to be heated to 200 DEG C, Addition 2kg leukotrienes, 1kg powdery sulfur chloride, 0.6kg butadiene-styrene rubber powder, 1kg illiteracies are de- rapidly under stirring Stone, with cutter dispersing apparatus by said mixture speed lapping 3h, finally add 0.4kg kg glycerine water solutions and 1kg 16 Alcohol, 260 DEG C of temperature is raised, continue grinding distribution 3h, system is cooled to 160 DEG C, can be processed after later stage development 3h Modified pitch for use.

Claims

1. a kind of High-and-low-temperaresistant resistant asphalt for adding hexadecanol modifying agent, it is characterised in that the asphalt stock includes following components：

Matrix pitch 90%-97%

Butadiene-styrene rubber 0.2%-6%

Powdery sulfur chloride 0.1%-6%

Montmorillonite 0.5%-1.5%

Leukotrienes 1%-4%

Glycerine water solution 0.2%-3%

Hexadecanol 0.5%-1.5%.

A kind of 2. High-and-low-temperaresistant resistant asphalt for adding hexadecanol modifying agent as claimed in claim 1, it is characterised in that described base Matter pitch can be asphalt, bitumen, and its mixture with oil, specifically respectively comprising pitch as its main group Point, the specific example of pitch includes straight asphalt, half blown asphalt, blown asphalt；Described butadiene-styrene rubber is preferentially to select powder Butadiene-styrene rubber；The glycerine of described glycerine water solution is 1 with water quality ratio：2-2：1 mixture.

3. the High-and-low-temperaresistant resistant asphalt of a kind of addition hexadecanol modifying agent as described in claim 1-2 is any, it is characterised in that should The preparation method of modified pitch comprises the following steps：

4. a kind of High-and-low-temperaresistant resistant asphalt for adding hexadecanol modifying agent as claimed in claim 3, it is characterised in that described Preparation method step (1) in, heating-up temperature is to 180-200 DEG C.

5. a kind of High-and-low-temperaresistant resistant asphalt for adding hexadecanol modifying agent as claimed in claim 3, it is characterised in that described Preparation method step (3) in, jitter time control in 1-3h.

6. a kind of High-and-low-temperaresistant resistant asphalt for adding hexadecanol modifying agent as claimed in claim 3, it is characterised in that described Preparation method step (4) in, temperature raise 220-260 DEG C, continue jitter time control in 1-3h.

7. a kind of High-and-low-temperaresistant resistant asphalt for adding hexadecanol modifying agent as claimed in claim 3, it is characterised in that described Preparation method step (5) in, in the case of being modified at the scene, the development of general later stage needs 1-3h.