CN108699836A - heat-insulating material and preparation method thereof - Google Patents
heat-insulating material and preparation method thereof Download PDFInfo
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- CN108699836A CN108699836A CN201580085821.2A CN201580085821A CN108699836A CN 108699836 A CN108699836 A CN 108699836A CN 201580085821 A CN201580085821 A CN 201580085821A CN 108699836 A CN108699836 A CN 108699836A
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- 239000011810 insulating material Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000005187 foaming Methods 0.000 claims abstract description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- 239000000126 substance Substances 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 35
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 30
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 14
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 7
- 229920005990 polystyrene resin Polymers 0.000 claims abstract description 5
- 229920006327 polystyrene foam Polymers 0.000 claims description 8
- 239000002041 carbon nanotube Substances 0.000 claims description 6
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 230000002902 bimodal effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 239000004793 Polystyrene Substances 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
- C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
- C08J9/008—Nanoparticles
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/048—Bimodal pore distribution, e.g. micropores and nanopores coexisting in the same foam
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
-
- 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
- C08J2325/00—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 aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Nanotechnology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The preparation method of the heat-insulating material of the embodiment of the present invention includes:The step of forming the blend compositions for mixing polystyrene resin and carbon nano-substance;First time foaming step, in the above-mentioned blend compositions dissolving form foaming body as the pentane gas and carbon dioxide gas of auxiliary blowing agent;And second of foaming step executes foaming in steam to above-mentioned foaming body.
Description
Technical field
The present invention relates to heat-insulating materials and preparation method thereof, are related to improving heat-insulating material and its preparation of structure in more detail
Method.
Background technology
Various heat-insulating materials be used to improve the heat-insulating property of building etc..It is most widely used as this heat-insulating material
The heat-insulating material that the foaming body formed by being by being foamed by being executed to single resin is constituted.
The heat-insulating material being made of this foaming body by itself because that only can realize that heat-insulating property is limited, so difficult
To ensure sufficient heat-insulating property.Therefore, it is necessary to the heat-insulating material of sufficient heat-insulating property can be achieved.
Invention content
Technical problem
The present invention, which provides, has the outstanding heat-insulating material of heat-insulating property and preparation method thereof.
Solution to problem
The preparation method of the heat-insulating material of the embodiment of the present invention includes:Form mixing polystyrene resin and carbon nanometer object
The step of blend compositions of matter;First time foaming step dissolves penta as auxiliary blowing agent in above-mentioned blend compositions
Alkane gas and carbon dioxide gas, to form foaming body;And second of foaming step, above-mentioned foaming body is executed in steam
Foaming.
In above-mentioned first time foaming step, the state of above-mentioned blend compositions is put into autoclave (autoclave)
Under, it is executed by providing above-mentioned pentane gas and above-mentioned carbon dioxide gas to above-mentioned autoclave.
In above-mentioned first time foaming step, the above-mentioned autoclave based on above-mentioned pentane gas and above-mentioned carbon dioxide gas
In pressure be 1050 pounds/square inch to 3000 pounds/square inch.
The activity time of above-mentioned second of foaming step is shorter than above-mentioned first time foaming step.
Above-mentioned first time foaming step executes 2 days to 3 days, and above-mentioned second of foaming step executes 1 minute to 3 minutes.
Above-mentioned heat-insulating material includes separate wells, and above-mentioned separate wells are with including the first hole with the first size and with small
Bimodulus (bimodal) structure in the second hole of second size in above-mentioned first hole.
Above-mentioned first size is 100 μm to 300 μm, and above-mentioned second size is 5 μm to 30 μm.
The expansion ratio of above-mentioned heat-insulating material is 20 or more, the open bore content of above-mentioned heat-insulating material be 8% hereinafter, it is above-mentioned absolutely
The thermal conductivity of hot material is 25mW/mK or less.
Above-mentioned carbon nano-substance includes carbon nanotube, includes the above-mentioned carbon of 0.01 weight percent to 0.5 weight percent
Nano-substance.
Include the above-mentioned carbon nano-substance of 0.1 weight percent to 0.3 weight percent.
The heat-insulating material of the embodiment of the present invention includes:Polystyrene foam has separate wells;And carbon nano-substance, point
It is dispersed in the wall surface of the above-mentioned separate wells of above-mentioned polystyrene foam, above-mentioned separate wells are with including the first hole with the first size
With the two mode field in the second hole with the second size less than above-mentioned first hole.
Above-mentioned first size is 100 μm to 300 μm, and above-mentioned second size is 5 μm to 30 μm.
The open bore content of above-mentioned polystyrene foam is 8% hereinafter, the thermal conductivity of above-mentioned heat-insulating material is 25mW/mK
Below.
Above-mentioned carbon nano-substance includes carbon nanotube, includes the above-mentioned carbon of 0.01 weight percent to 0.5 weight percent
Nano-substance.
Include the above-mentioned carbon nano-substance of 0.1 weight percent to 0.3 weight percent.
The effect of invention
According to the preparation method of the heat-insulating material of the present embodiment, can be prepared with outstanding thermal insulation by simple process
The heat-insulating material of characteristic.Moreover, the heat-insulating material of the present embodiment has two mode field, low open bore content and lower thermal conductivity, because
This is with outstanding insulating characteristics.
Description of the drawings
Fig. 1 is the flow chart of the preparation method for the heat-insulating material for showing the embodiment of the present invention.
Fig. 2 is the sectional view for the heat-insulating material for schematically illustrating the embodiment of the present invention.
Specific implementation mode
Hereinafter, with reference to the appended attached drawing embodiment that the present invention will be described in detail.But the invention is not limited in these realities
Example is applied, modification can be executed in a variety of manners certainly.
The part unrelated with explanation is omitted for the clear and brief description present invention in the accompanying drawings, in specification full text
In to identical or extremely similar part use identical reference numeral.Moreover, in the accompanying drawings in order to definitely illustrate to amplify
Or reduce and thickness, width etc. are shown, but thickness, the width etc. of the present invention are not limited to shown in attached drawing.
Moreover, in the specification, when certain a part of " comprising " another part, unless otherwise stated, not being
Another part is discharged, but may also include another part.Also, when the part such as layer, film, region, plate is located at another part " it
On " when, this includes not only the case where " direct " is on another part, but also includes the case where another part is located therein.
Refer to that no another part is located at centre when the part such as layer, film, region, plate is " direct " to be located on another part.
Hereinafter, the heat-insulating material and preparation method thereof of present invention will be described in detail with reference to the accompanying embodiment.Hereinafter, illustrating thermal insulation
After the preparation method of material, the heat-insulating material thus prepared is described in detail.
Fig. 1 is the flow chart of the preparation method for the heat-insulating material for showing the embodiment of the present invention.
As shown in Figure 1, the preparation method of the heat-insulating material of the present embodiment include the steps that be formed blend compositions (S10),
First time foaming step (or saturation process) (S20) and second of foaming step (S30).This is executed further specifically
It is bright.
In the step of forming blend compositions (S10), mixing polystyrene resin and carbon nano-substance.Polystyrene tree
Fat is that the substance of outstanding insulating characteristics can be presented to form separate wells by foaming.Since carbon nano-substance has nanometer water
The size of flat size (1nm or more is less than 1 μm), therefore radiation-inhibiting can be played the role of.Moreover, carbon nano-substance can be with
It reduces nucleation energy barrier surface when foaming and improves anisotropism bubble nucleating.Also, carbon nano-substance can be located at hole wall after expanding
To increase the mechanical strength of matrix.
Many kinds of substance can be used as carbon nano-substance, as an example, when using carbon nanotube, barrier can be effectively played
The effect of radiation.
At this point, the blend compositions relative to total 100 weight percent, may include 0.01 weight percent to 0.5 weight
The carbon nano-substance of percentage.If carbon nano-substance is less than 0.01 weight percent, it is likely that the effect based on carbon nano-substance
Fruit is insufficient.If carbon nano-substance is more than 0.5 weight percent, the content of possible open bore is high.If at this point, relative to total
The blend compositions of 100 weight percent include the carbon nano-substance of 0.1 weight percent to 0.3 weight percent, then by carbon
The effect of nano-substance maximizes and can effectively reduce the content of open bore.
In first time foaming step (S20), in the state that blend compositions are put into autoclave, by autoclave
Pentane gas and carbon dioxide gas of the middle offer as auxiliary blowing agent, to dissolve blend compositions.
If pentane gas and carbon dioxide gas are used as auxiliary blowing agent, independence can be reduced by increasing expansion ratio
The size in hole.More specifically, pentane gas executes plasticization to polystyrene and has high dissolving in polystyrene substrate
Degree.Only, it since the degree of supersaturation of pentane gas is low, so as to limit bubble formation, therefore, is used together with pentane gas
With the carbon dioxide gas higher than pentane gas, come so as to which bubble can be effectively formed.The foaming body being consequently formed has big
Expansion ratio, and because high degree of supersaturation causes to generate heterogeneous bubble.Cause a large amount of bubble nucleating as a result,.At this point, carbon is received
Rice substance can accelerate bubble nucleating by reducing nucleation energy barrier surface.
Pressure in autoclave based on pentane gas and carbon dioxide gas can be 1050 pounds/square inch to 3000
Pound/square inch.If above-mentioned pressure is less than 1050 pounds/square inch, possible foaming effect is insufficient, if above-mentioned pressure is more than
3000 pounds/square inch, then hole may be damaged or destroy because of high pressure when foaming.But the present invention is not limited thereto.
First time foaming step (S20) is 2 days to 3 days executable.It is because may be implemented within the scope of these activity times
Sufficient foaming with big expansion ratio.But the present invention is not limited thereto.
In second of foaming step (S30), the foaming body formed by first time foaming step (S20) is held in steam
Row foaming.It is possible thereby to realize sufficient foaming, and so as to there can be big expansion ratio.
As an example, in second of foaming step (S30), by providing 100 DEG C to 120 DEG C of steam to foaming body,
Second of foaming can be executed.It is because can be easy to be formed the steam of this temperature range and can be carried under this temperature range
High-foaming characteristic.
The activity time of second of foaming step (S30) can be shorter than the activity time of first time foaming step (S20).This is
Because if executing second of foaming step S30 for a long time), it is likely that it is based on first time foaming step in being difficult to control
(S20) state of a variety of foam characteristics.As an example, second of foaming step (S30) is 1 minute to 3 minutes executable.At this
In kind range, second of foaming can be executed while increasing expansion ratio, and without substantially changing foam characteristics.But the present invention is simultaneously
It is not limited to this.
Fig. 2 is the sectional view for the heat-insulating material for schematically illustrating the embodiment of the present invention.
With reference to Fig. 2, the heat-insulating material (100) formed according to the preparation method of above-mentioned heat-insulating material may include polystyrene
Foam (10) and carbon nano-substance (20), above-mentioned polystyrene foam (10) are formed by the matrix with separate wells, and above-mentioned carbon is received
Rice substance (20) is dispersed in the wall surface of separate wells.As discussed previously with respect to total heat-insulating material 100 of 100 weight percent, can wrap
Carbon containing 0.01 weight percent to 0.5 weight percent (as an example, 0.1 weight percent to 0.3 weight percent) is received
Rice substance 20.
At this point, the size of separate wells may be 300 μm or less (for example, 5 μm to 300 μm).This is because using carbon is included
The blend compositions of nano-substance (20), while being used as auxiliary blowing agent using pentane gas and carbon dioxide gas.More have
Body, separate wells including the first hole (12) and having with the first size (as an example, the first mean size) with being less than
The two mode field in the second hole (14) of second size (as an example, the second mean size) in the first hole (12).That is, relatively large
First hole (12) is easily deformed, but relatively small the second hole (14) has strong modulus (modulus).Like this, heat-insulating material
100 can be by simultaneously there is the second hole (14) to have outstanding mechanical strength.As an example, first size of the first hole (12)
Be 100 μm to 300 μm, the second hole 14) the second size can be 5 μm to 30 μm.Can be easy to prepare these first sizes and
Second size, it is not limited to the value with superior mechanical intensity.
Moreover, expansion ratio (the heat insulating material relative to blend compositions based on first time foaming and second of foaming process
The volume ratio of material 100) it is 20 or more (as an example, 20 to 35), the open bore content of heat-insulating material (100) is 8% or less
The thermal conductivity of (as an example, 2% to 8%), heat-insulating material 100 can be 25mW/mK or less (as an example, 15mW/mK
To 25mW/mK).Wherein, open bore content can be measured according to a variety of methods, but air specific weight bottle (air can be used
Pycnometer) etc..
When low open bore content can be by carbon nano-substance (20), penta as auxiliary blowing agent for highly expanded as described above
Alkane gas and carbon dioxide gas are realized.In particular, can be by the way that the content of carbon nano-substance (20) be limited in 0.5 weight percent
It is more possible comprising a large amount of carbon nano-substance (20) to prevent than following (more specifically below 0.3 weight percent)
The reduction of the expansion ratio of generation.Moreover, pentane gas to polystyrene have strong plasticization effect, therefore destroy hole wall it
Before, so that expansion is more, to can not only have expansion ratio, but also open bore content can be reduced.
Moreover, as described above, lower thermal conductivity by the present embodiment heat-insulating material (100) multifrequency nature combination Lai real
It is existing.The carbon nano-substance (20) of hole wall is dispersed in for preventing from radiating.In particular, such as the present embodiment, when expansion ratio is big (as one
Example, when 20 or more), since radiation can generate significant impact to thermal conductivity, prevent from radiating by carbon nano-substance (20).
Moreover, two mode field is reversed for enhancing, the conduction by solid phase can be reduced based on this torsion.Also, relatively large first
The thick hole wall in hole (12) can effective radiation-inhibiting.
As described above, according to the preparation method of the heat-insulating material (100) of the present embodiment, can be manufactured by simple process
Heat-insulating material (100) with outstanding insulating characteristics.Moreover, the heat-insulating material (100) of the present embodiment has two mode field, low
Open bore content and lower thermal conductivity, thus there are outstanding insulating characteristics.
Hereinafter, with reference to Production Example of the invention, present invention be described in more detail.
Blend compositions are formed by mixing polystyrene resin with carbon nanotube.At this point, relative to total 100 weight hundred
Divide ratio, includes the carbon nanotube of 0.25 weight percent.Moreover, after blend compositions are put into autoclave, will with 2000 pounds/it is flat
The pressure of square inch provides pentane gas and carbon dioxide gas is placed 2 days and executed and foams for the first time.It will be sent out by first time
The foaming gas that bubble is formed is placed 2 minutes in 100 DEG C of steam and executes second and foams, to form heat-insulating material.
Thus the photo of the heat-insulating material manufactured is as shown in figure 3, measure first size (as an example, first in the first hole
Mean size), the second size (as an example, the second mean size), the expansion ratio of heat-insulating material, the open bore in the second hole contain
Amount, thermal conductivity, to be shown in Table 1 its result.
Table 1
| First size | 167μm |
| Second size | 14.8μm |
| Expansion ratio | 27.7 |
| Open bore content | 6.6% |
| Thermal conductivity | 24.7mW/m·K |
With reference to Fig. 3 and table 1, heat-insulating material has 300 μm of holes below on the whole, it is known that with the of 100 μm to 300 μm
The two mode field in the first hole of one size and the second hole with 5 μm to 30 μm relatively small of the second size.
Moreover, the expansion ratio of heat-insulating material is 20 or more, open bore content be 8% hereinafter, thermal conductivity be 25mW/mK with
Under, it is known that it is very outstanding.
Feature, structure, effect as described above etc. are included at least one embodiment of the present invention, but are not limited to
A kind of embodiment.Further, feature, structure, effect for illustrating in embodiments etc. can be by the skills belonging to the present embodiment
The those of ordinary skill in art field can also execute other embodiment combination or deformation.Therefore, should be construed to combine with these and
Related content is deformed to be included within the scope of the present invention.
Claims (15)
1. a kind of preparation method of heat-insulating material, which is characterized in that including:
The step of forming the blend compositions for mixing polystyrene resin and carbon nano-substance;
First time foaming step, pentane gas and carbon dioxide gas of the dissolving as auxiliary blowing agent in above-mentioned blend compositions
Body, to form foaming body;And
Second of foaming step executes second to above-mentioned foaming body and foams in steam.
2. the preparation method of heat-insulating material according to claim 1, which is characterized in that in above-mentioned first time foaming step
In, in the state of being put into above-mentioned blend compositions in autoclave (autoclave), by providing above-mentioned penta to above-mentioned autoclave
Alkane gas and above-mentioned carbon dioxide gas foam for the first time to execute.
3. the preparation method of heat-insulating material according to claim 2, which is characterized in that in above-mentioned first time foaming step
In, pressure in the above-mentioned autoclave based on above-mentioned pentane gas and above-mentioned carbon dioxide gas be 1050 pounds/square inch extremely
3000 pounds/square inch.
4. the preparation method of heat-insulating material according to claim 1, which is characterized in that the work of above-mentioned second of foaming step
The sequence time is shorter than above-mentioned first time foaming step.
5. the preparation method of heat-insulating material according to claim 4, which is characterized in that above-mentioned first time foaming step executes
2 days to 3 days, above-mentioned second of foaming step executed 1 minute to 3 minutes.
6. the preparation method of heat-insulating material according to claim 1, which is characterized in that above-mentioned heat-insulating material includes independent
Hole, above-mentioned separate wells are with including the first hole with the first size and second with the second size less than above-mentioned first hole
Bimodulus (bimodal) structure in hole.
7. the preparation method of heat-insulating material according to claim 6, which is characterized in that above-mentioned first size be 100 μm extremely
300 μm, above-mentioned second size is 5 μm to 30 μm.
8. the preparation method of heat-insulating material according to claim 1, which is characterized in that the expansion ratio of above-mentioned heat-insulating material is
20 or more,
The open bore content of above-mentioned heat-insulating material be 8% hereinafter,
The thermal conductivity of above-mentioned heat-insulating material is 25mW/mK or less.
9. the preparation method of heat-insulating material according to claim 1, which is characterized in that above-mentioned carbon nano-substance includes that carbon is received
Mitron,
Include the above-mentioned carbon nano-substance of 0.01 weight percent to 0.5 weight percent.
10. the preparation method of heat-insulating material according to claim 9, which is characterized in that extremely comprising 0.1 weight percent
The above-mentioned carbon nano-substance of 0.3 weight percent.
11. a kind of heat-insulating material, which is characterized in that include:
Polystyrene foam has separate wells;And
Carbon nano-substance is dispersed in the wall surface of the above-mentioned separate wells of above-mentioned polystyrene foam,
Above-mentioned separate wells are with including the first hole with the first size and with the second size less than above-mentioned first hole
Bimodulus (bimodal) structure in two holes.
12. heat-insulating material according to claim 11, which is characterized in that above-mentioned first size is 100 μm to 300 μm, on
It is 5 μm to 30 μm to state the second size.
13. heat-insulating material according to claim 11, which is characterized in that the open bore content of above-mentioned polystyrene foam is
8% hereinafter, the thermal conductivity of above-mentioned heat-insulating material is 25mW/mK or less.
14. heat-insulating material according to claim 11, which is characterized in that above-mentioned carbon nano-substance includes carbon nanotube, packet
Above-mentioned carbon nano-substance containing 0.01 weight percent to 0.5 weight percent.
15. heat-insulating material according to claim 14, which is characterized in that include 0.1 weight percent to 0.3 weight percent
The above-mentioned carbon nano-substance of ratio.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2015/014008 WO2017111182A1 (en) | 2015-12-21 | 2015-12-21 | Heat insulating material and method for preparing same |
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| CN108699836A true CN108699836A (en) | 2018-10-23 |
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| KR (1) | KR102077469B1 (en) |
| CN (1) | CN108699836A (en) |
| WO (1) | WO2017111182A1 (en) |
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| CN108997666B (en) * | 2018-07-19 | 2020-11-17 | 浙江工业大学 | Polymer microporous foam material with double-peak pore structure and preparation method thereof |
| KR20210073790A (en) * | 2019-12-11 | 2021-06-21 | 한화솔루션 주식회사 | Method for Compression Molding Foams Using Physical Blowing Agents |
| KR20230061741A (en) * | 2021-10-29 | 2023-05-09 | 한국재료연구원 | Ultra-low thermal conductivity nanoporous composition and insulation using the same |
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| KR102077469B1 (en) | 2020-04-03 |
| KR20180091017A (en) | 2018-08-14 |
| WO2017111182A1 (en) | 2017-06-29 |
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