CN105017786B - Polyethylene glycol is from snow melt composite phase-change material modified pitch and preparation method thereof - Google Patents
Polyethylene glycol is from snow melt composite phase-change material modified pitch and preparation method thereof Download PDFInfo
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- CN105017786B CN105017786B CN201510356122.9A CN201510356122A CN105017786B CN 105017786 B CN105017786 B CN 105017786B CN 201510356122 A CN201510356122 A CN 201510356122A CN 105017786 B CN105017786 B CN 105017786B
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Abstract
A kind of polyethylene glycol is from snow melt composite phase-change material modified pitch and preparation method thereof, and each component weight is 83.5~90 parts of matrix pitches, 9.35~15.4 parts of polyethylene glycol, 0.62~1.03 part of bentonite, 0.03~0.07 part of intercalator and 1~2 part of water；It is preferred that 87 parts of matrix pitches, 12.14 parts of polyethylene glycol, 0.81 part of bentonite, 0.05 part of intercalator and 1.5 parts of water.It starts with from pavement asphalt material, polyethylene glycol is adsorbed onto in bentonite porous matrix using the method for absorption and dipping, it is prepared into polyethylene glycol bentonite composite phase-change material, reach energy storage and discharge and regulation energy requirement and the purpose for supplying mismatch, the ability for making its own carry deicing, eliminates and manually or mechanically operates；Formula simpler production is convenient, snow melt low cost, without pre-buried cable, does not cause mechanical damage and durability to consume to structure, reduces the freeze-thaw damage damage on road surface.
Description
Technical field
The invention belongs to from snow melt technical field, and in particular to a kind of polyethylene glycol is modified from snow melt composite phase-change material and dripped
Green grass or young crops and preparation method thereof, be it is a kind of have can ice-melt snow function ground surface material, material can melt ice and snow by self character,
Prevent icy on road.
Technical background
Road snow, icing pass unimpeded influence road traffic and car operation safety, and particularly urban road longitudinal slope is larger
Section, ring road above and below such as overpass, often because snowing influence normal vehicle operation.According to the relevent statistics, China's winter 40%
Traffic accident be due to road snow mantle freeze caused by, brought about great losses to social economy.The snow-removing method commonly used at present
It is broadly divided into following three kinds：
1st, method is manually removed：Efficiency is low, works under hard conditions, and influences traffic, takes time and effort, easily cause pavement damage；
2nd, mechanical removal method：Somewhat expensive, mainly salting class Snow Agent remove the snow, and it easily reduces pitch for gathering materials
Adhesive capacity, causes the serious corrosion of reinforcing bar, influences the intensity and service life of bridge structure thing, road pavement endurance quality and environment
Influence is larger；
3rd, electric energy snow melt method：In time, without suspending traffic, environmental protection, but material composition is complicated, preparation manipulation is numerous for snow melt
Trivial, high cost.
The content of the invention
It is this new the invention provides a kind of polyethylene glycol from snow melt composite phase-change material modified pitch and preparation method thereof
Composite phase-change material modified pitch can voluntarily melt in the state of icy on road ice and snow on road surface by self-characteristic,
Solve low existing snow-clearing technique efficiency, influence traffic, preparation and operating process complexity, the technical problem of somewhat expensive；Also solve
Prior art needs the road pavement multigelation to cause road surface to occur freeze-thaw damage, existing salting deicing measure road pavement and steel
The corrosion of muscle cement and mass transit vehicle set for the damage and snow removal with machine of the anti-skidding fitting overall chain road pavement on tire
Apply the damage problem of road pavement.
To realize above-mentioned technical purpose, the technical scheme that the present invention takes is as follows：
A kind of polyethylene glycol is from snow melt composite phase-change material modified pitch, it is characterised in that its recipe ingredient and each component
Weight it is as follows：
83.5~90 parts of matrix pitch；
9.35~15.4 parts of polyethylene glycol；
0.62~1.03 part of bentonite；
0.03~0.07 part of intercalator；
1~2 part of water；
Wherein, preferred weight part proportioning is：
87 parts of matrix pitch；
12.14 parts of polyethylene glycol；
0.81 part of bentonite；
0.05 part of intercalator；
1.5 parts of water；
It is furthermore preferred that the matrix pitch is the pitch that asphalt and bitumen are mixed with.
It is preferred that, the polyethylene glycol is solid macromolecule polyethylene glycol.
It is preferred that, the bentonite is the nanometer organobentonite of ground 200 mesh sieve.
It is preferred that, the intercalator is one or two kinds of mixing in new intercalation agents and CTMAB intercalators.
The present invention also provides preparation method of the above-mentioned polyethylene glycol-bentonite from snow melt composite phase-change material modified pitch,
It is characterised in that it includes following steps：
Step 1: intercalator is added in bentonite is made a nanometer organobentonite；
Step 2: the weight according to each component in formula weighs or measured each component material；
Step 3: the polyethylene glycol weighed is placed in mixing container, beaker is placed in water-bath and is heated to polyethylene glycol
Melt；
Step 4: the nanometer organobentonite weighed is slowly added in beaker, side edged is slowly stirred, and waits to be added completely into
Afterwards, 20~40 min are quickly stirred, resulting mixture is polyethylene glycol-bentonite composite phase-change material；
Step 5: removing the impurity on matrix pitch surface, 140 DEG C~150 DEG C are heated to；
Step 6: polyethylene glycol made from step 4-bentonite composite phase-change material to be slowly added to the matrix of step 5
In pitch, artificial stirring makes both merge uniformly, and heating is kept during stirring, until mixture temperature reaches 160 DEG C~170 DEG C；
Step 7: maintaining 160 DEG C~170 DEG C temperature-resistant, 30~60min of high-speed stirred, that is, polyethylene glycol is made and melts certainly
Avenge composite phase-change material modified pitch.
Wherein, in the step one, bentonite is made a nanometer bentonite specific method and is：First by bentonite point
Dissipate in water, agitating heating is warming up to the intercalator for being added after 70 DEG C~90 DEG C and accounting for bentonite quality 5%, and keeping temperature is constant to fill
Divide stirring 1h~3h, be cooled to room temperature, filter, chloride ion content is examined with 0.1mol/L AgNO3, until chlorion all disappears
It has been consumed that, then dried the compound without chlorion in 100 DEG C of baking ovens, ground 200 mesh, you can the organic swelling of nanometer is made
Soil.
Modified pitch of the present invention is from the principle of snow melt：Bentonite is sorbing material in instant component, and it has stratiform
Structure, is easily dispersed expansion in water, and with higher thermal conductivity factor；Polyethylene glycol passes through heat as phase-changing energy storage material
Melt and dissolved immersion cementation process adsorbs polyethylene glycol into bentonite, is prepared into polyethylene glycol-bentonite composite phase-change material, as
A kind of energy and material, during its thing phase change, can absorb heat from environment（It is cold）Amount releases heat into environment, so that
Reach energy storage and discharge and regulation energy requirement and the purpose for supplying mismatch, the principle of phase-change accumulation energy is in thing using material
State changes（Gu-liquid, Gu-vapour or vapour-liquid）When, the heat of environment will be absorbed（It is cold）Amount, and needs when to environment release heat
（It is cold）With the absorption or release of energy in amount, phase transition process, this portion of energy is referred to as latent heat of phase change.Simultaneously in the temperature rise period,
Because phase-change material needs absorption latent heat to undergo phase transition, heat buffering and overtemperature protection can be played a part of, temperature can be prevented
Degree rises too high, too fast, reduction temperature shock, it is to avoid mechanical property and durability to bituminous concrete produce harmful effect.
Polyethylene glycol has good energy storage, materialization stabilization in the present invention, hot feature is good, phase transition temperature is adjustable and can be processed into setting
The advantages of, the radiation energy storage of daylight is can absorb when day temperature is higher, evening temperature releases heat when relatively low, plays temperature adjustment samming
Effect, melt the effect of ice and snow so as to be reached in ice and snow day.
Compared with prior art, it is of the invention it is a technical advantage that：
1st, with from snow melting function：Start with polyethylene glycol of the present invention-bentonite composite phase-change material from ground surface material, make
Material itself carries the ability of deicing, eliminates and manually or mechanically operates.Polyethylene glycol can be in temperature as phase-change material
Heat energy is absorbed when higher, to be released energy during low temperature and melt the effect of ice and snow so as to be reached in the ice and snow world, without pre-buried electricity
Cable, it is simple to operate, effectively alleviate Pedestrians and vehicles the problem of ice and snow road difficulty in walking, ensure the security of the lives and property；
2nd, it is formulated simple, easy to make, snow melt low cost：Constituent of the present invention only needs to matrix pitch, and poly- second
A small amount of chemical substance such as glycol, bentonite, intercalator is that can reach the purpose made from snow melt road surface, these material acquiring way
Simple and cost is not high, manufacturing process simplicity understands, can be with wide popularization and application；
3rd, mechanical damage and durability is not caused to consume structure：Common deicing measure is avenged and chemical salt with mechanical deicing
Based on class deicing, but the easy road pavement of both measures and structural elements cause mechanically or chemically corrosion damage, and the present invention makes road
Face itself possesses deicing function, and deicing operation is carried out without the exterior measures, so as to avoid machinery, chemical attack pair
The generation of pavement damage；
4th, the freeze-thaw damage damage on road surface is reduced：Easily occur freeze thawing in the north or highlands ground and road surface to show
As so as to cause more serious freeze-thaw damage, road surface of the present invention itself possesses deicing function, can effectively slow down freeze thawing phenomenon
Generation, remain the state of relative equilibrium.
Brief description of the drawings
Fig. 1 is the technological process of production of composite phase-change material modified pitch.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1
The preferred weight part proportioning of polyethylene glycol from snow melt composite phase-change material modified pitch is as follows：
87 parts of matrix pitch；
12.14 parts of polyethylene glycol；
0.81 part of bentonite；
0.05 part of intercalator；
1.5 parts of water；
Embodiment 2
The preferred weight part proportioning of polyethylene glycol from snow melt composite phase-change material modified pitch is as follows：
83.8 parts of matrix pitch；
15.4 parts of polyethylene glycol；
0.76 part of bentonite；
0.04 part of intercalator；
1.5 parts of water；
Embodiment 3
The preferred weight part proportioning of polyethylene glycol from snow melt composite phase-change material modified pitch is as follows：
89.4 parts of matrix pitch；
9.53 parts of polyethylene glycol；
1.0 parts of bentonite；
0.07 part of intercalator；
2 parts of water；
Embodiment 4
The preferred weight part proportioning of polyethylene glycol from snow melt composite phase-change material modified pitch is as follows：
85 parts of matrix pitch；
14.35 parts of polyethylene glycol；
0.62 part of bentonite；
0.03 part of intercalator；
1 part of water；
Embodiment 5
The preferred weight part proportioning of polyethylene glycol from snow melt composite phase-change material modified pitch is as follows：
90 parts of matrix pitch；
9.35 parts of polyethylene glycol；
0.62 part of bentonite；
0.03 part of intercalator；
1 part of water；
In above-mentioned five embodiments, matrix pitch is the matrix pitch that asphalt mixes a small amount of bitumen, poly- second two
Alcohol is solid macromolecule polyethylene glycol.The bentonite is the nanometer organobentonite of 200 mesh, and its content is 7%, i.e. organic bentonite
Profit soil is 7% with polyethylene glycol mass ratio.The intercalator is new intercalation agents and CTMAB intercalators（Cetyl three
Methyl bromide ammonium intercalator）In one or two kinds of mixing.
Common petroleum pitch is compared to, modified pitch softening point of the present invention is high, and performance is excellent under hot weather
In common petroleum pitch；Needle penetration of the present invention declines 25~30 compared with common petroleum pitch（In units of 0.1mm）, embody shearing resistance energy
Power is better than common petroleum pitch.Modified pitch contrasts as follows with common petroleum bitumen technology index, and wherein table 1 is common
90# asphalt technical indicators, table 2 is modified asphalt technology index of the present invention：
The common 90# asphalt technical indicator of table 1
The modified asphalt technology index of the present invention of table 2
Advantage is avenged in ice-melt further to embody the present invention, and progress ice-melt contrast test is carried out under the conditions of -10 DEG C,
Identical ice boulder is placed in two kinds of surface of test piece, different time sections ice-melt situation is observed, result such as table 3 is shown：
The common test specimen in road surface changes over time the ice-melt feelings on surface with composite phase-change material test specimen of the present invention at 3-10 DEG C of table
Condition
The result of table 3 shows that the modified pitch of composite phase-change material of the present invention becomes apparent from compared with common petroleum pitch
Ice-melt effect.
The present invention also provides preparation method of the above-mentioned polyethylene glycol-bentonite from snow melt composite phase-change material modified pitch,
Characterized in that, for ease of the understanding to composite phase-change material Production Process of Modified Bitumen flow, illustrating operating process.Figure
1 is the technological process of production of composite phase-change material modified pitch.Comprise the following steps：
Step 1: preparation：The preparation of preparation and mixing container including reagent material, by bentonite ground 200
A nanometer organobentonite is made in mesh sieve；Bentonite is dispersed in water, stirs, intercalator is added when being warming up to 70 DEG C~90 DEG C,
Keeping temperature is sufficiently stirred for 1h~3h, is cooled to room temperature, filtering, is examined with 0.1mol/L AgNO3 and consumes no chlorion and is
Only, after finally being dried in 100 DEG C of baking ovens, ground 200 mesh can be prepared by a nanometer organobentonite；
Step 2: weighing or measuring each component material：Weight according to each component in formula is weighed or measured respectively
Component material；
Step 3: polyethylene glycol is melted in water-bath：The polyethylene glycol weighed is placed in mixing container, beaker is placed in water-bath
In be heated to polyethylene glycol thawing；
Step 4: the bentonite weighed is slowly added in beaker, side edged is slowly stirred, after the entry to be completely, quickly
20~40 min are stirred, resulting mixture is polyethylene glycol-bentonite composite phase-change material；
Step 5: removing the impurity on matrix pitch surface, 140 DEG C~150 DEG C are heated to；
Step 6: polyethylene glycol made from step 4-bentonite composite phase-change material to be slowly added to the matrix of step 5
In pitch, artificial stirring makes both merge uniformly, and heating is kept during stirring, until mixture temperature reaches 160 DEG C~170 DEG C；
Step 7: maintaining 160 DEG C~170 DEG C temperature-resistant, 30~60min of high-speed stirred, that is, polyethylene glycol is made and melts certainly
Avenge composite phase-change material modified pitch.
The main snow melting material that the present invention is used is phase-changing energy storage material（PCMs）, phase-changing energy storage material（PCMs）It is divided into nothing
Machine and organic two major class, inorganic are such as hydrated salt PCMs, and easily producing corrosivity, supercooling and problem of phase separation in phase transformation is
Inorganic PCMs inherent shortcoming, organic PCMs such as polyethylene glycol, aliphatic acid and its derivative, paraffin etc., with energy storage
The advantages of good, physical and chemical performance is stable, thermal property is good, phase transition temperature is adjustable, be widely used in phase-change accumulation energy wallboard, floor,
In ceiling and concrete.Present invention selection polyethylene glycol is as phase-changing energy storage material, and polyethylene glycol has that energy storage is good, materialization
Property it is stable, hot feature is good, phase transition temperature is adjustable, the advantages of can be processed into setting, can absorb the radiation energy storage of daylight daytime, evening
Upper releasing heat, plays a part of temperature adjustment samming；Porous matrix can be that bentonite, vermiculite, bentonite, expanded graphite, pearl are swollen
Swollen rock, concave convex rod or some other lamellar clay etc., porous matrix of the present invention select bentonite, because bentonite has stratiform knot
Structure, is easily dispersed expansion, and with higher thermal conductivity factor, prepare composite phase-change material, in water for modified pitch simultaneously
Preparing asphalt is used for pavement construction, makes it have ice-melt snow function；Using the method for absorption and dipping by polyethylene glycol
It is adsorbed onto in porous matrix, is prepared into polyethylene glycol-bentonite composite phase-change material, as a kind of energy and material, in its thing phase
In change procedure, heat can be absorbed from environment（It is cold）Amount releases heat into environment, thus reach energy storage and release and
Adjust the purpose of energy requirement and supply mismatch.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent substitutions and improvements made etc. should be included within the scope of the present invention.
Claims (4)
1. a kind of polyethylene glycol is from snow melt composite phase-change material modified pitch, it is characterised in that its recipe ingredient and each component
Weight is as follows：
83.5~90 parts of matrix pitch；
9.35~15.4 parts of polyethylene glycol；
0.62~1.03 part of bentonite；
0.03~0.07 part of intercalator；
1~2 part of water；
The matrix pitch is the pitch that asphalt and bitumen are mixed with；
The intercalator is one or two kinds of mixing in new intercalation agents and CTMAB intercalators；
The polyethylene glycol is solid macromolecule polyethylene glycol；
Ground 200 mesh sieve after intercalator is added in the bentonite turns into nanometer organobentonite.
2. a kind of polyethylene glycol according to claim 1 is from snow melt composite phase-change material modified pitch, it is characterised in that bag
The component and the weight of each component contained is as follows：
87 parts of matrix pitch；
12.14 parts of polyethylene glycol；
0.81 part of bentonite；
0.05 part of intercalator；
1.5 parts of water.
3. a kind of polyethylene glycol according to claim 1 or 2 is from the preparation method of snow melt composite phase-change material modified pitch,
It is characterised in that it includes following steps：
Step 1: intercalator is added after bentonite is dispersed in water is made a nanometer organobentonite；
Step 2: the weight according to each component in formula weighs or measured remaining each component material；
Step 3: the polyethylene glycol weighed is placed in mixing container, beaker is placed in water-bath and is heated to polyethylene glycol thawing；
Step 4: the nanometer organobentonite being made is slowly added in beaker, side edged is slowly stirred, after the entry to be completely,
20~40 min of quick stirring, resulting mixture is polyethylene glycol-bentonite composite phase-change material；
Step 5: removing the impurity on matrix pitch surface, 140 DEG C~150 DEG C are heated to；
Step 6: polyethylene glycol made from step 4-bentonite composite phase-change material to be slowly added to the matrix pitch of step 5
In, artificial stirring makes both merge uniformly, and heating is kept during stirring, until mixture temperature reaches 160 DEG C~170 DEG C；
Step 7: maintaining 160 DEG C~170 DEG C temperature-resistant, 30~60min of high-speed stirred, that is, polyethylene glycol is made multiple from snow melt
Close phase change material modified pitch.
4. a kind of polyethylene glycol according to claim 3 is from the preparation method of snow melt composite phase-change material modified pitch, its
It is characterised by, in the step one, bentonite is made a nanometer bentonite specific method and is：Bentonite is scattered in first
In water, agitating heating is warming up to after 70 DEG C~90 DEG C and adds intercalator, and keeping temperature is constant to be sufficiently stirred for 1h~3h, is cooled to room
Temperature, filtering examines chloride ion content with 0.1mol/L AgNO3, until chlorion all runs out of, then by without chlorion
Compound is dried in 100 DEG C of baking ovens, ground 200 mesh sieve, you can nanometer organobentonite is made.
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| CN105801009B (en) * | 2016-03-25 | 2017-04-19 | 长安大学 | Self-thermoregulation metal phase change asphalt mixture and preparing method thereof |
| CN106082793B (en) * | 2016-06-29 | 2018-08-07 | 河北建筑工程学院 | It is sustained salt composite phase-change material asphalt and preparation method thereof |
| CN106396561B (en) * | 2016-09-30 | 2018-08-31 | 长安大学 | A kind of micro-surfacing mixture and preparation method thereof with snow melting function |
| CN106531335B (en) * | 2016-12-23 | 2018-04-20 | 福建瑞达精工股份有限公司 | A kind of power transmission cable with icing protection and preparation method thereof |
| CN107365569A (en) * | 2017-01-11 | 2017-11-21 | 中南大学 | Clay-based composite phase change energy-storing deicing（Snow melt）The preparation method of material |
| CN107828385A (en) * | 2017-11-13 | 2018-03-23 | 常州凯途纺织品有限公司 | A kind of solar heat-preservation composite and preparation method thereof |
| CN109651898A (en) * | 2019-01-24 | 2019-04-19 | 苏州拓博琳新材料科技有限公司 | A kind of aqueous self-luminous gage mark coating and preparation method thereof |
| CN111650073B (en) * | 2020-06-15 | 2024-02-13 | 河北工业大学 | Method for testing snow and ice melting capability of phase-change asphalt mixture |
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