CN107857962A - A kind of the light for architecture thermal transition plastic foil and preparation method with microcellular structure - Google Patents
A kind of the light for architecture thermal transition plastic foil and preparation method with microcellular structure Download PDFInfo
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- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
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- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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Abstract
The invention belongs to technical field prepared by conversion film, there is provided a kind of the light for architecture thermal transition plastic foil and preparation method with microcellular structure.Film is made into polyvinyl alcohol resin by adding light conversion agent and aeroge, then the film with photothermal deformation effect is made by simple tension.Because light conversion agent and polyvinyl alcohol are non-conforming system, stress orientation is different in drawing process, cause the film of stretching to form microcellular structure around light conversion agent under aeroge auxiliary, the multiple reflections and refraction that light can be carried out in film micropore, improve photo-thermal conversion efficiency.Compared with conventional method, the photo-thermal conversion efficiency of photothermal conversion plastic foil prepared by the present invention is high, has high light selectivity and tensile property, while whole preparation process is simple, and cost is relatively low, and the pollution to environment is small, can wide popularization and application.
Description
Technical field
The invention belongs to technical field prepared by conversion film, there is provided a kind of the light for architecture thermal transition with microcellular structure
Plastic foil and preparation method.
Background technology
With the increasingly lifting that the increasing rapidly of population, the rapid development of urban construction and people are required quality of life,
Energy energy input increases year by year, and global greenhouse effect increasingly highlights so that with the exploitation and application of the renewable sources of energy and power-saving technology
For core low-carbon technology turn into countries in the world energy development strategic objective, people researching and developing always it is various can be effective
Using and save the material and technology of the energy, wherein solar energy as a kind of inexhaustible clean type energy, its
Develop the important topic that become international.
In the research of the numerous Land use systems of solar energy, photothermal deformation is due to economical and practical, technology maturation, high conversion efficiency
Factor has ranked among rising and high-tech industries with development prospect is wide etc., and solar radiation can be converted directly into heat by aforesaid way, without
Pilot process, and it is pollution-free, solar energy optical-thermal application is to utilize one of most simple, most direct, maximally effective approach of solar energy.Mesh
The key of preceding research is how further to lift the utilization rate of solar energy, improves conversion efficiency.Thin-film material is in the sun in recent years
Extensive development and application are reached in energy industry, they not only have excellent performance, and cost is low, is easy to send out on a large scale
Exhibition.
The current substantial amounts of solar energy photo-thermal conversion absorbing membrane developed, its sunshine absorption mechanism can be attributed to intrinsic
Absorb and the interference of light absorbs, it is physical vapor deposition, electrochemical reaction, chemistry to prepare photothermal conversion film main method at present
Vapour deposition and chemical liquid deposition etc..Wherein physical vapor deposition is mainstream technology, is mainly heated under vacuum conditions
Thin-film material becomes steam, is agglomerated to again on the relatively low substrate of temperature and forms film, mainly using thermal evaporation, splash
Penetrate, ion plating, Jon deposition etc.；Electrochemical reaction is mainly galvanoplastic, is mainly used in the material with high current efficiency；Change
Learn vapour deposition and generally require higher deposition temperature, under specific pioneer's reactant, pass through atom, intermolecular chemical reaction
Approach generates film；Then technique is relatively simple for chemical liquid deposition, and manufacturing cost is low.
Certain effect is achieved in photothermal conversion film preparation and technology application aspect both at home and abroad at present.Wherein all crystalline substances etc.
Human hair understands a kind of multifunctional composite film with high photo-thermal conversion efficiency and preparation method and application（Chinese invention patent Shen
Please numbers 201410791076.0）, including conjugated polymer nano material and plastics, the multifunctional composite film are by non-heavy metal
Class, nontoxic conjugated polymer nano material and plastics mix, then film is made with extrusion molding, rolling process or blow moulding,
But pollutant in the preparation process of this method be present, and process is complex and cost is high.In addition, Zhang Yong et al. has invented one kind
More primitive alloy nitride films of high-performance optical thermal transition and preparation method thereof（Chinese invention patent application number
201510028998.0）, this method successfully prepares more primitive alloy sputters using powder metallurgic method and vacuum arc melting method
Target, and more bases of different-thickness are prepared by changing sputtering time and operating air pressure using vacuum magnetron sputtering coating film technique
First alloy nitride film, but this method cost is higher, preparation process is complex, is unfavorable for promoting.
It can be seen that in the prior art, electrochemical process prepares film and the shortcomings that environmental pollution is big be present, and vacuum deposition method needs
Expensive equipment adds film preparation cost, most of photothermal conversion film is all by multilayer in addition to realize condition of high vacuum degree
Film laminated forms, and manufacturing process is more complicated.
The content of the invention
There is a pollution for existing photothermal conversion film preparation process, MULTILAYER COMPOSITE complex process, the defects of cost is high, the present invention
It is proposed a kind of addition photothermal converting agent in base-material and the film of microcellular structure is made.By adding light conversion agent and aeroge to poly-
Film is made in vinyl alcohol resin, then the film with photothermal deformation effect is made by simple tension.Light conversion agent and aeroge
It is well mixed with polyvinyl alcohol by solution, then after ultrasonic disperse is uniform, casting film-forming, is carried out certain again after drying at room temperature
Ratio stretches film forming.Because light conversion agent and polyvinyl alcohol are non-conforming system, stress orientation is different in drawing process, in airsetting
The film of stretching is caused to form microcellular structure around light conversion agent under glue auxiliary, light can carry out multiple in film micropore
Reflection and refraction, improve photo-thermal conversion efficiency.
A kind of the light for architecture thermal transition plastic foil with microcellular structure of the present invention, can avoid being typically prepared method environment
Pollution is big, prepares the shortcomings that cost is high, while solves general photothermal conversion plural layers complex manufacturing process, film strength
The problems such as difference, thickness are difficult to effectively control.
Concrete technical scheme of the present invention is as follows：
A kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure, preparation comprise the following steps that：
（1）Light conversion agent, aeroge, polyvinyl alcohol and water are pressed into certain mass ratio dispensing, and the normal temperature in homogenizer
It is uniformly mixed, obtains jelly；
（2）By step（1）Jelly addition plasticizer, reinforcing agent, the emulsifying agent of gained, 20 ~ 30min of ultrasonic disperse, standing 5 ~
After 8min, casting film-forming at room temperature, after oven for drying placing 5 ~ 10min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2-3 to stretch than control:1, because light conversion agent and polyvinyl alcohol be non-conforming system, the stress orientation difference in drawing process, gas
The film blank of stretching is caused to form microcellular structure around light conversion agent under gel auxiliary, and the hydroxyl that polyvinyl alcohol has can
In intermolecular formation hydrogen bond, film is turned into an entirety, that is, the light for architecture thermal transition plastic foil with microcellular structure is made.
After poly-vinyl alcohol solution casting film-forming, it is stretched, by the way of simple tension.Due to drawing process
Middle light conversion agent is different from the stress orientation of polyvinyl alcohol, using the micropore of aeroge as original shape, causes the film of stretching can turn light
Microcellular structure is formed around agent.Outstanding feature is the multiple reflections and refraction carried out when light in film micropore, so as to
To significantly improve the photo-thermal conversion efficiency of conversion film.And hydroxyl possessed by polyvinyl alcohol itself, can be in intermolecular formation hydrogen
Key, film is set to turn into an entirety so that the tensile strength of film is higher.Obtained film is single layer structure, without additional
Layer, preparation technology is simple, and product quality is stable.
Preferably, step（1）The light conversion agent, aeroge, polyvinyl alcohol and water are according to mass ratio 1:0.2-0.5:50-
100:200-300。
Preferably, step（1）Described light conversion agent is the alkali earth metal aluminate, sulfide, oxidation of rare earth metal doping
Thing, tungstates or silicate, particle diameter are 100 ~ 300nm.
Preferably, step（1）Described light conversion agent is black phosphorus.
Preferably, step（1）The aerosil, carbon aerogels, oxidation that described aeroge is aperture 2-50nn
One kind in aluminium aeroge.
Preferably, step（1）The rotating speed of the normal temperature high-speed stirred is 90 ~ 120r/min, and the time is 20 ~ 30min.
Preferably, step（2）The jelly, plasticizer, reinforcing agent, the mass ratio of emulsifying agent are 100:5-10:1-3:
0.5-1。
Preferably, step（2）The plasticizer is at least one of glycerine, epoxidized soybean oil or sorbierite；The increasing
Strong agent is at least one of polypropylene fibre, brucite fiber, wollastonite fibre, glass fibre；The emulsifying agent is tween
80th, at least one of polysorbas20, polysorbate60 or polysorbate40.
A kind of the light for architecture thermal transition plastic foil with microcellular structure is further provided for, is prepared by the above method.
Pad pasting for building glass can be converted light into effectively as heat energy, to warming.
The ray machine reason that turns of light conversion agent is that itself luminous and lattice lights.Itself is luminous to be common in inorganic salt of rare earth class and turns light
Agent, due to the Sensitization Mechanism of luminescence system, the triplet energy of whole part is adjusted by changing the length of oligomer connector
Level, the control to energy transfer process is reached with this.And the light conversion agent that lattice lights is typically by two or more metallic elements
Compound group is into a kind of metallic element forms specific lattice structure, in activator（Another metallic element）Effect is lower to be formed
The centre of luminescence, the ion in lattice obtain energy and occur electron transition, and when returning to ground state by excitation state by energy with light and
The form of heat discharges.
Mechanism in the present invention for the inorganic light conversion agent of conversion film is the luminous class of lattice of doping type, by aiding in airsetting
Glue to form microcellular structure in the film so that multiple reflections and refraction occur inside film for light source, improve photothermal deformation
Efficiency.
Photothermal conversion plastic foil prepared by the present invention, with vacuum deposition method, electrochemical reaction method and chemical vapor deposition
Photothermal conversion plastic foil prepared by method is contrasted, and its photo-thermal conversion efficiency, the cost prepared have obvious advantage.
The invention provides a kind of the light for architecture thermal transition plastic foil and preparation method with microcellular structure, with existing skill
The characteristics of art is compared, and it is protruded and excellent effect are：
1. photothermal conversion plastic foil prepared by the present invention is aided in and stretched have microcellular structure by aeroge, light is micro- in film
The multiple reflections and refraction that Kong Zhonghui is carried out, improve photo-thermal conversion efficiency.
2. the preparation method of the present invention, it is not necessary to add additional structure, can make film has high light selectivity.
3. the preparation method of the present invention, due to the hydroxyl that polyvinyl alcohol itself has, can make in intermolecular formation hydrogen bond
Film can turn into an entirety, have higher tensile property.
4. photothermal conversion plastic foil prepared by the present invention is monofilm, preparation process is relatively simple, and cost is relatively low.To environment
Pollution it is small, can wide popularization and application.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Barium aluminate, aerosil, polyvinyl alcohol and the water that light conversion agent lanthanum ion is adulterated are according to mass ratio 1:3:
50:200 dispensings, and the stirring at normal temperature 90r/min in homogenizer, time 20min, it is well mixed, obtains jelly；
（2）By step（1）The jelly of gained, plasticizer glycerine, reinforcing agent polypropylene fibre, emulsifier tween 80 are according to quality
Than 100:5:1:0.5 mixing, ultrasonic disperse 20min, after standing 5min, casting film-forming, is placed after oven for drying at room temperature
5min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2 to stretch than control:1, because light conversion agent and polyvinyl alcohol be non-conforming system, the stress orientation difference in drawing process, airsetting
The film blank of stretching is caused to form microcellular structure around light conversion agent under glue auxiliary, and the hydroxyl that polyvinyl alcohol has can be
Intermolecular formation hydrogen bond, film is turned into an entirety, that is, the light for architecture thermal transition plastic foil with microcellular structure is made.
The photothermal conversion plastic foil obtained to embodiment 1, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Embodiment 2
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Magnesia, carbon aerogels, polyvinyl alcohol and the water that light conversion agent samarium ion is adulterated are according to mass ratio 1:3:100:300
Dispensing, and the stirring at normal temperature 120r/min in homogenizer, time 30min, it is well mixed, obtains jelly；
（2）By step（1）Jelly, plasticizer epoxidized soybean oil, reinforcing agent brucite fiber, the emulsifier tween 20 of gained are pressed
According to mass ratio 100:8:2:0.5 mixing, ultrasonic disperse 30min, after standing 8min, casting film-forming at room temperature, through oven for drying
Placing 10min afterwards can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 3 to stretch than control:1, because light conversion agent and polyvinyl alcohol be non-conforming system, the stress orientation difference in drawing process, airsetting
The film blank of stretching is caused to form microcellular structure around light conversion agent under glue auxiliary, and the hydroxyl that polyvinyl alcohol has can be
Intermolecular formation hydrogen bond, film is turned into an entirety, that is, the light for architecture thermal transition plastic foil with microcellular structure is made.
The photothermal conversion plastic foil obtained to embodiment 2, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Embodiment 3
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Calcium aluminate, alumina aerogels, polyvinyl alcohol and the water that light conversion agent silver ion is adulterated are according to mass ratio 1:5:50:
250 dispensings, and the stirring at normal temperature 100r/min in homogenizer, time 30min, it is well mixed, obtains jelly；
（2）By step（1）The jelly of gained, plasticizer sorbierite, reinforcing agent wollastonite fibre, emulsifier tween 80 are according to matter
Measure ratio 100:10:3:1 mixing, ultrasonic disperse 30min, after standing 8min, casting film-forming, is placed after oven for drying at room temperature
10min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2.5 to stretch than control:1, because inorganic light conversion agent and polyvinyl alcohol be non-conforming system, the stress in drawing process is orientated not
Together, the film blank of stretching is caused to form microcellular structure around light conversion agent under aeroge auxiliary, and the hydroxyl that polyvinyl alcohol has
Base can make film turn into an entirety, that is, the light for architecture thermal transition with microcellular structure be made in intermolecular formation hydrogen bond
Plastic foil.
The photothermal conversion plastic foil obtained to embodiment 3, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Embodiment 4
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Calcium aluminate, aerosil, polyvinyl alcohol and the water in mass ratio 1 that light conversion agent silver ion is adulterated:4:80:
200 dispensings, and the stirring at normal temperature 120r/min in homogenizer, time 20min, it is well mixed, obtains jelly；
（2）By step（1）The jelly of gained, plasticizer sorbierite, reinforcing agent glass fibre, emulsifier tween 40 are according to quality
Than 100:5:3:1 mixing, ultrasonic disperse 30min, after standing 8min, casting film-forming, is placed after oven for drying at room temperature
10min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2-3 to stretch than control:1, because light conversion agent and polyvinyl alcohol be non-conforming system, the stress orientation difference in drawing process, gas
The film blank of stretching is caused to form microcellular structure around light conversion agent under gel auxiliary, and the hydroxyl that polyvinyl alcohol has can
In intermolecular formation hydrogen bond, film is turned into an entirety, that is, the light for architecture thermal transition plastic foil with microcellular structure is made.
The photothermal conversion plastic foil obtained to embodiment 4, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Embodiment 5
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Light conversion agent black phosphorus, aerosil, polyvinyl alcohol and water are pressed according to mass ratio 1:5:50:200 dispensings, and
The stirring at normal temperature 120r/min in homogenizer, time 30min, it is well mixed, obtains jelly；
（2）By step（1）The jelly of gained, plasticizer glycerine, reinforcing agent polypropylene fibre, emulsifier tween 80 are according to quality
Than 100:5:1:0.5 mixing, ultrasonic disperse 20min, after standing 5min, casting film-forming, is placed after oven for drying at room temperature
5min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2-3 to stretch than control:1, because inorganic light conversion agent and polyvinyl alcohol be non-conforming system, the stress in drawing process is orientated not
Together, the film blank of stretching is caused to form microcellular structure around light conversion agent under aeroge auxiliary, and the hydroxyl that polyvinyl alcohol has
Base can make film turn into an entirety, that is, the light for architecture thermal transition with microcellular structure be made in intermolecular formation hydrogen bond
Plastic foil.
The photothermal conversion plastic foil obtained to embodiment 5, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Comparative example 1
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Light conversion agent black phosphorus, polyvinyl alcohol and water are pressed according to mass ratio 1:50:200 dispensings, and the normal temperature in homogenizer
120r/min, time 30min are stirred, is well mixed, obtains jelly；
（2）By step（1）The jelly of gained, plasticizer glycerine, reinforcing agent polypropylene fibre, emulsifier tween 80 are according to quality
Than 100:5:1:0.5 mixing, ultrasonic disperse 20min, after standing 5min, casting film-forming, is placed after oven for drying at room temperature
5min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2-3 to stretch than control:1, because inorganic light conversion agent and polyvinyl alcohol be non-conforming system, the stress in drawing process is orientated not
Together, the film blank of stretching is caused to form microcellular structure around light conversion agent under aeroge auxiliary, and the hydroxyl that polyvinyl alcohol has
Base can make film turn into an entirety, that is, the light for architecture thermal transition with microcellular structure be made in intermolecular formation hydrogen bond
Plastic foil.
The photothermal conversion plastic foil that comparative example 1 obtains, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Comparative example 2
A kind of the light for architecture thermal transition plastic foil with microcellular structure, it is as follows that it prepares the detailed process of conversion film：
（1）Light conversion agent black phosphorus, aerosil, polyvinyl alcohol and water are pressed according to mass ratio 1:5:50:200 dispensings, and
The stirring at normal temperature 120r/min in homogenizer, time 30min, it is well mixed, obtains jelly；
（2）By step（1）The jelly of gained, plasticizer glycerine, reinforcing agent polypropylene fibre, emulsifier tween 80 are according to quality
Than 100:5:1:0.5 mixing, ultrasonic disperse 20min, after standing 5min, casting film-forming, is placed after oven for drying at room temperature
5min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained is smooth by roller calendering, and being made has photothermal conversion plastic foil.
The photothermal conversion plastic foil that comparative example 1 obtains, tests its thickness, photo-thermal conversion efficiency, as shown in table 1.
Table 1：
Claims (9)
1. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure, preparation comprise the following steps that：
（1）Light conversion agent, aeroge, polyvinyl alcohol and water are pressed into certain mass ratio dispensing, and the normal temperature in homogenizer
It is uniformly mixed, obtains jelly；
（2）By step（1）Jelly addition plasticizer, reinforcing agent, the emulsifying agent of gained, 20 ~ 30min of ultrasonic disperse, standing 5 ~
After 8min, casting film-forming at room temperature, after oven for drying placing 5 ~ 10min can be stripped, and obtain film blank；
（3）By step（2）The film blank of gained passes through unidirectional roller stretching-machine, and first paragraph roller temperature is 40 ~ 50 DEG C of preheatings,
Second segment roller sets normal temperature to stretch, micro- 110 ~ 120 DEG C of homogenizing of the 3rd section of bowl temperature, and the 4th section of 20-30 DEG C of roller temperature is fixed
Type, wherein second and third, four sections of roller linear velocities it is equal, and be more than first paragraph roller linear velocity, by controlling linear differential to make drawing
It is 2-3 to stretch than control:1, because light conversion agent and polyvinyl alcohol be non-conforming system, the stress orientation difference in drawing process, gas
The film blank of stretching is caused to form microcellular structure around light conversion agent under gel auxiliary, and the hydroxyl that polyvinyl alcohol has can
In intermolecular formation hydrogen bond, film is turned into an entirety, that is, the light for architecture thermal transition plastic foil with microcellular structure is made.
2. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（1）The light conversion agent, aeroge, polyvinyl alcohol and water are according to mass ratio 1:0.2-0.5:50-100:200-
300。
3. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（1）Described light conversion agent is alkali earth metal aluminate, sulfide, oxide, the tungstates of rare earth metal doping
Or silicate, particle diameter are 100 ~ 300nm.
4. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（1）Described light conversion agent is black phosphorus.
5. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（1）Described aeroge is aperture 2-50nn aerosil, carbon aerogels, alumina aerogels
In one kind.
6. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（1）The rotating speed of the normal temperature high-speed stirred is 90 ~ 120r/min, and the time is 20 ~ 30min.
7. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（2）The jelly, plasticizer, reinforcing agent, the mass ratio of emulsifying agent are 100:5-10:1-3:0.5-1.
8. a kind of preparation method of the light for architecture thermal transition plastic foil with microcellular structure according to claim 1, it is special
Sign is：Step（2）The plasticizer is at least one of glycerine, epoxidized soybean oil or sorbierite；The reinforcing agent is poly-
At least one of tacryl, brucite fiber, wollastonite fibre, glass fibre；The emulsifying agent is Tween 80, tween
20th, at least one of polysorbate60 or polysorbate40.
9. a kind of the light for architecture thermal transition plastic foil with microcellular structure, is characterized in：As described in claim any one of 1-8
Method is prepared.
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