CN104448849A - Method for preparing polyethylene-polyvinyl chloride commixture modified asphalt - Google Patents
Method for preparing polyethylene-polyvinyl chloride commixture modified asphalt Download PDFInfo
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- CN104448849A CN104448849A CN201410672759.4A CN201410672759A CN104448849A CN 104448849 A CN104448849 A CN 104448849A CN 201410672759 A CN201410672759 A CN 201410672759A CN 104448849 A CN104448849 A CN 104448849A
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- polyvinyl chloride
- polyethylene
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- shears
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Abstract
The invention provides a method for preparing polyethylene-polyvinyl chloride commixture modified asphalt. The method comprises the following steps: commixing polyethylene and polyvinyl chloride by using chlorinated polyethylene as a solubilizer, adding the commixture into dehydrated asphalt, and shearing, thereby preparing the modified asphalt which is relatively good in compatibility and stable in property.
Description
Technical field
The present invention relates to a kind of bituminous material, particularly a kind of blend modifying asphalt and preparation method thereof, belongs to field of new.
Background technology
The construction of road construction, particularly motorway, to promoting that very important effect is played in the fast development of national economy.Since eighties of last century the eighties reform and opening-up, China's Economic development is rapid, highway development also achieves brilliant achievement, China Expressway is broken through 30,000 kilometers of total kilometrages and is occupied the second in the world, the demand of road bitumen increases year by year, " 12 " period, road bitumen consumption is every year on average at about 1,500 ten thousand tons.
Pitch is a kind of product of Crude Oil Processing, is thick liquid or the solid of black or chocolate at normal temperatures, and it is the organic material as a form of gel of a kind of brownish black, and main component is bituminous matter and resin.Bituminous pavement advantage is a lot, and one is wheel and road surface two-stage vibration damping, and therefore road-ability is good, noise is little; Two is flexible pavement strong adaptabilities to roadbed, foundation deformation or non-uniform settling; Three is that speed is repaired soon in road surface, can be open to traffic after rolling.But China is vast in territory, south is large with boreal climate difference, temperature, rainfall are not identical yet, and cause the behaviour in service difference of bituminous pavement very large, the reason difference that bituminous pavement destroys is large.As high in the Low temperature property requirements of cold district to pitch, hot area requires high to the high-temperature stability of pitch, and moist area of heavy rainfull then requires high to the water stability of pitch.And plain asphalt can not meet all use properties requirements, the measured pitch of matter must be adopted, to meet the requirement of varying environment Pavement Performance in Distress.
In order to improve bituminous pavement using character, road work person starts with from all respects affecting bitumen properties, by
Step improves the use properties of bituminous pavement, and wherein very important one side carries out technological improvement to pitch especially heavy-duty road asphalt exactly.Road construction increases road bitumen quantity demand on the one hand, improves on the other hand to quality quality requirements.And China Higher level road bitumen supply is at present not enough, the market requirement can not be can not meet, the main dependence on import of a large amount of pitch far away at all.Thus, try to explore that output is large, cost is low, stability is strong, the simple novel asphalt of technique, in order to improve the performance of road asphalt, realize reducing engineering cost, ensureing construction quality, oneself becomes the important content of high-performance pitch research.In pitch, add polymkeric substance is a kind of conventional method of modifying, such as, add polyethylene and polyvinyl chloride, but due to the limited compatibility of pitch and polymkeric substance, after directly adding, static rear easy layering etc.The present invention is that solubilizing agent makes polyethylene and polychloroethylene blended with chlorinatedpolyethylene for this reason, joins in pitch, improves the use properties of pitch.Owing to having good consistency, this asphalt performance is stablized.
Summary of the invention
The object of this invention is to provide the preparation method of a kind of polyethylene-polyvinyl chloride blend modifying asphalt, this preparation method carries out as follows:
(1), first by pitch holding vessel, be placed in thermal dehydration in the sand bath of temperature controllable, oil bath, and stir gently with glass stick, prevent local superheating;
(2) when observation pitch does not have foam to emerge, stop heating, rapidly pitch is poured in high-speed shearing machine, start high-speed shearing machine, control rotating speed within 500r/min;
(3) polyethylene and polyvinyl chloride are added in agitator, then add chlorinatedpolyethylene, stir 2min;
(4) the polyethylene after being uniformly mixed and polyvinyl chloride blend are added in shears;
(5) shears speed is increased to more than 600r/min, shears 5-10min, namely produce a kind of polyethylene-polyvinyl chloride blend modifying asphalt.
As preferred embodiments of the present invention, pitch dewatering Heating temperature is no more than 100 DEG C.
As preferred embodiments of the present invention, the input mol ratio of polyethylene and polyvinyl chloride is 1:1.
As preferred embodiments of the present invention, the ratio of polyethylene-polyvinyl chloride blend addition and pitch addition is less than 1:10.
The present invention has following advantages and characteristic:
(1) this pitch softening point is higher, and high temperature resistant property is good;
(2) product resource is abundant, cheap;
(3) preparation technology is simple, easy scale operation.
Embodiment
Embodiment one:
(1) take 200g pitch and put into beaker, water-bath beaker being placed in 80 DEG C is heated, and stirs gently with glass stick, prevents local superheating;
(2) observing pitch bubbling situation, when stopping emerging foam, stopping heating;
(3) rapidly the pitch of dehydration is poured in high-speed shearing machine, start high-speed shearing machine, rotating speed is set to 300r/min;
(4) get polyethylene and each 10g of polyvinyl chloride, add in agitator, then add chlorinatedpolyethylene 5g, stir 2min;
(5) the polyethylene after being uniformly mixed and polyvinyl chloride blend are added in shears;
(6) shears speed is increased to 600r/min, shears 5min, namely produce a kind of novel modified asphalt.
Embodiment two:
(1) take 500g pitch and put into beaker, water-bath beaker being placed in 90 DEG C is heated, and stirs gently with glass stick, prevents local superheating;
(2) observing pitch bubbling situation, when stopping emerging foam, stopping heating;
(3) rapidly the pitch of dehydration is poured in high-speed shearing machine, start high-speed shearing machine, rotating speed is set to 400r/min;
(4) get polyethylene and each 25g of polyvinyl chloride, add in agitator, then add chlorinatedpolyethylene 10g, stir 2min;
(5) the polyethylene after being uniformly mixed and polyvinyl chloride blend are added in shears;
(6) shears speed is increased to 700r/min, shears 8min, namely produce a kind of novel modified asphalt.
Embodiment three:
(1) take 5000g pitch and put into beaker, water-bath beaker being placed in 100 DEG C is heated, and stirs with wooden stick, prevents local superheating;
(2) observing pitch bubbling situation, when stopping emerging foam, stopping heating;
(3) rapidly the pitch of dehydration is poured in high-speed shearing machine, start high-speed shearing machine, rotating speed is set to 500r/min;
(4) get polyethylene and each 150g of polyvinyl chloride, add in agitator, then add chlorinatedpolyethylene 50g, stir 2min;
(5) the polyethylene after being uniformly mixed and polyvinyl chloride blend are added in shears;
(6) shears speed is increased to 800r/min, shears 10min, namely produce a kind of novel modified asphalt.
Claims (4)
1. a preparation method for polyethylene-polyvinyl chloride blend modifying asphalt, is characterized in that this preparation method carries out as follows:
(1), first by pitch holding vessel, be placed in thermal dehydration in the sand bath of temperature controllable, oil bath, and stir gently with glass stick, prevent local superheating;
(2) when observation pitch does not have foam to emerge, stop heating, rapidly pitch is poured in high-speed shearing machine, start high-speed shearing machine, control rotating speed within 500r/min;
(3) polyethylene and polyvinyl chloride are added in agitator, then add chlorinatedpolyethylene, stir 2min;
(4) the polyethylene after being uniformly mixed and polyvinyl chloride blend are added in shears;
(5) shears speed is increased to more than 600r/min, shears 5-10min, namely produce a kind of polyethylene-polyvinyl chloride blend modifying asphalt.
2. the preparation method of a kind of polyethylene-polyvinyl chloride blend modifying asphalt according to claim 1, is characterized in that pitch dewatering Heating temperature is no more than 100 DEG C.
3. the preparation method of a kind of polyethylene-polyvinyl chloride blend modifying asphalt according to claim 1, is characterized in that the input mol ratio of polyethylene and polyvinyl chloride is 1:1.
4. the preparation method of a kind of polyethylene-polyvinyl chloride blend modifying asphalt according to claim 1, is characterized in that the ratio of polyethylene-polyvinyl chloride blend addition and pitch addition is less than 1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410672759.4A CN104448849A (en) | 2014-11-23 | 2014-11-23 | Method for preparing polyethylene-polyvinyl chloride commixture modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410672759.4A CN104448849A (en) | 2014-11-23 | 2014-11-23 | Method for preparing polyethylene-polyvinyl chloride commixture modified asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104448849A true CN104448849A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410672759.4A Pending CN104448849A (en) | 2014-11-23 | 2014-11-23 | Method for preparing polyethylene-polyvinyl chloride commixture modified asphalt |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102242A (en) * | 1987-03-20 | 1987-11-18 | 项晓红 | A kind of building water-proof paint |
| CN1068586A (en) * | 1991-07-18 | 1993-02-03 | 长春市金属化工厂 | Antirot adhesives |
| CN1121939A (en) * | 1995-04-20 | 1996-05-08 | 武汉工业大学 | Modified asphalt material for pavement and preparation process thereof |
| CN1288094A (en) * | 2000-10-12 | 2001-03-21 | 河南省水利科学研究所 | Method for water sealing construction for building |
| US20110197788A1 (en) * | 2010-02-12 | 2011-08-18 | Howard Grant Bradshaw | High Post Consumer Content Mineral Filler Based on Micronized Recycled Asphalt Paving and Thermoplastic Compositions and Polymeric Emulsions Derived from Same |
-
2014
- 2014-11-23 CN CN201410672759.4A patent/CN104448849A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102242A (en) * | 1987-03-20 | 1987-11-18 | 项晓红 | A kind of building water-proof paint |
| CN1068586A (en) * | 1991-07-18 | 1993-02-03 | 长春市金属化工厂 | Antirot adhesives |
| CN1121939A (en) * | 1995-04-20 | 1996-05-08 | 武汉工业大学 | Modified asphalt material for pavement and preparation process thereof |
| CN1288094A (en) * | 2000-10-12 | 2001-03-21 | 河南省水利科学研究所 | Method for water sealing construction for building |
| US20110197788A1 (en) * | 2010-02-12 | 2011-08-18 | Howard Grant Bradshaw | High Post Consumer Content Mineral Filler Based on Micronized Recycled Asphalt Paving and Thermoplastic Compositions and Polymeric Emulsions Derived from Same |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |