CN104105917A - Vacuum insulation material and method for manufacturing same - Google Patents
Vacuum insulation material and method for manufacturing same Download PDFInfo
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- CN104105917A CN104105917A CN201380008960.6A CN201380008960A CN104105917A CN 104105917 A CN104105917 A CN 104105917A CN 201380008960 A CN201380008960 A CN 201380008960A CN 104105917 A CN104105917 A CN 104105917A
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- inorfil
- silk thread
- curve
- thermal insulating
- inorganic fiber
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4391—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
- D04H1/43912—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres fibres with noncircular cross-sections
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Thermal Insulation (AREA)
- Paper (AREA)
Abstract
Provided is a vacuum insulation material that has a stable quality, that is capable of maintaining initial thermal insulation properties over a long period of time, and that is capable of maintaining the form of a sheet even when the use of a binder, which causes the problem of volatilization in a vacuum state, is avoided. The vacuum insulation material according to the present invention includes a laminated body (10) of inorganic fiber sheets (1), and an enveloping member (11) that vacuum-seals the laminated body. In the inorganic fiber sheets, inorganic fiber strand groups that contain curved inorganic fiber strands having a cut length (L) of between 3mm and 12mm are randomly distributed, and at least some of the inorganic fiber strand groups are engaged with each other.
Description
Technical field
The present invention relates to a kind of Vacuum thermal insulating material for refrigerator, refrigerated warehouse, HEATING BOX, water heater etc., more specifically, relate to Vacuum thermal insulating material and the manufacture method thereof that the duplexer of the inorganic fiber sheet material of the method manufacture of manufacturing paper with pulp by wet type is formed with housing material vacuum seal.
Background technique
As the thermoinsulation material for refrigerator, refrigerated warehouse, HEATING BOX, water heater etc., use the Vacuum thermal insulating material of adiabaticity excellence.As Vacuum thermal insulating material, used the following material forming: pressurization compressed glass wool in the past, the block of glass wool of bonding manufacture is accommodated in the container of gas barrier property excellence simultaneously, will in container, be evacuated and seals (for example, JP 60-14695 communique: patent documentation 1).
Usually, think that the deviation of length of staple of glass wool is large, particularly in the glass wool with manufactures such as centrifuge method, flame method, contain the particulate material that is called solids (shot) (not fibrosis shot-like particle), the solids that particle diameter is large becomes the reason that produces large pore in thermoinsulation material, in addition, if there are a plurality of solids in the space of thermoinsulation material, due to the heat transfer by convection at gas in container etc., become the reason that adiabaticity declines.In addition, be known as raising adiabaticity, by inorfil with respect to hot conduction orientation vertically orientation be useful.
Thus, for example, JP 2005-265038 communique (patent documentation 2) has proposed following proposal: substitute the block of glass wool that pressurization compressed glass wool obtains, the duplexer of the inorganic fiber sheet material that wet type manufactures paper with pulp has been carried out glass fibre in use, in addition, as raw material inorfil, the containing ratio of the solids containing in glass wool is made as below 0.1 quality %.
But in glass wool, the deviation of the length of staple containing is large, also contain the long fiber of length of staple, the bending sometimes of this fiber, distortion sometimes.Therefore, while using glass wool as raw material, use wet type to manufacture paper with pulp, also be difficult to make thin inorganic fiber sheet material, and the raising of heat-insulating property is restricted, for example, No. 4713566 communiques of patent (patent documentation 3), No. 4726970 communiques of patent (patent documentation 4) and No. 4772887 communiques of patent (patent documentation 5) have proposed the inorfil that utilizes the manufacture of continuous filament yarn (filament) method to cut into the scheme that the high inorfil (short chopping) of straightness accuracy that given length obtains is used as raw material.
Particularly, patent documentation 3-5 has proposed to use nonwovens that fiber diameter is manufactured paper with pulp through wet type for 3-15mm, straightness accuracy inorfil high, circular cross-section for 3-15 μ m, average fiber length as the scheme of inorganic fiber sheet material.
Prior art document:
Patent documentation
Patent documentation 1: JP 60-14695 communique
Patent documentation 2: JP 2005-265038 communique
Patent documentation 3: No. 4713566 communiques of patent
Patent documentation 4: No. 4726970 communiques of patent
Patent documentation 5: No. 4772887 communiques of patent
Summary of the invention
The problem that invention will solve
In patent documentation 3-5 due to the high short chopping of straightness accuracy of using as raw material in the step of manufacturing paper with pulp, be difficult to produce between fiber winding, so tackiness agent is necessary.Patent documentation 3-5 is used the water soluble polymers such as polyvinyl alcohol fiber or polyvinyl alcohol particle as tackiness agent.
But, if organic bond as above exposes for a long time under condition of high vacuum degree, can volatilize gradually, the volatile ingredient of organic bond causes that degree of vacuum declines, and becomes Vacuum thermal insulating material in time and the reason of adiabaticity decline.
Patent documentation 3 is by remove the tackiness agent containing in stacked nonwovens before core material vacuum seal, and patent documentation 5 is by being used liquid adhesive as tackiness agent (patent documentation 5), suppresses the decline of the adiabaticity that tackiness agent causes.
But, in patent documentation 3-5, in the situation that use inorfil under the high state of degree of vacuum, due to relevant with the winding suppressing between fiber, if therefore tackiness agent is very few, be difficult to keep the lamella shape of inorganic fiber sheet material.In addition, even if append by heating and wait the step of removing tackiness agent, in the situation that inorganic fiber sheet material is overlapping, be also difficult to remove the tackiness agent of inner inorganic fiber sheet material, cause in addition and append the new problem that tackiness agent is removed the cost up of the Vacuum thermal insulating material that step causes.
The present invention In view of the foregoing makes, the Vacuum thermal insulating material that provides a kind of mass stability high is provided its object, even if it avoids using the tackiness agent that can produce volatilization problem and so under vacuum, also can keep lamella shape, and can keep for a long time the adiabaticity at initial stage.
Solve the method for problem
Vacuum thermal insulating material of the present invention comprises the duplexer of inorganic fiber sheet material and the housing material that this duplexer of vacuum seal forms, wherein, in described inorganic fiber sheet material, comprise the inorfil tow random dispersion that Cutting Length (L) is the curve-like inorfil silk thread of 3-12mm, and at least a portion of described inorfil tow is engaged with each other.
Described curve-like inorfil silk thread preferably forms to form the mode in the 1/2-1 cycle of described waveform the silk thread that forms the waveform consist of curve with the cut-space of 3mm-12mm, the peak portion height (2 times of values of amplitude) of described curve-like inorfil silk thread is preferably 1-6mm.
Described inorfil tow is that bulky yarn is obtained with the cutting of 3mm-12mm length, the heart yearn that described bulky yarn contains multifilament (multifilament) and form looping and/or the sheath line of the multifilament that relaxes and tangle on the surface of this heart yearn, the multifilament that described curve-like inorfil silk thread preferably forms described sheath line by cutting obtains, and described curve-like inorfil silk thread is preferably has the looping of 6mm-25mm length or the silk thread of curve (curve).In addition the multifilament that, forms described heart yearn is preferably section profiled fiber.
The fiber diameter of described inorfil silk thread is preferably 0.5-15 μ m, and described inorfil silk thread is preferably glass fibre.In addition, the containing ratio of described curve-like silk thread is preferably the more than 15% of described inorfil silk thread integral body.
Described inorganic fiber sheet material is preferably by manufacturing paper with pulp the dispersion liquid wet type of described inorfil silk thread to obtain.
The manufacture method of Vacuum thermal insulating material of the present invention, it is the manufacture method of the Vacuum thermal insulating material of the housing material that forms of this duplexer of the duplexer that contains inorganic fiber sheet material and vacuum seal, it is characterized in that: comprise material liquid modulation step, stir the fiber suspension contain inorfil tow and dispersing agent and modulate fiber dispersion; With papermaking step, the described fiber dispersion obtaining is carried out to wet type and manufacture paper with pulp and make inorganic fiber sheet material,
Described inorfil tow is used the inorfil silk thread that bulky yarn is formed with the cutting of 3mm-12mm length, the heart yearn that described bulky yarn contains multifilament and form looping and/or the sheath line of the multifilament that relaxes and tangle on the surface of this heart yearn, or use the 1/2-1 cycle wavelength of the waveform being formed by curve and the inorfil silk thread that wavelength is 3mm-12mm.
The effect of invention
Vacuum thermal insulating material of the present invention is because in fact containing the volatile ingredient that can make degree of vacuum decline, thus can keep for a long time the vacuum state of height, but also excellent adiabaticity can be stably provided.In addition, as the manufacture method of Vacuum thermal insulating material of the present invention, manufacture method of the present invention is convenient, and productivity is excellent.
Accompanying drawing explanation
Fig. 1 is for the schematic diagram of the formation of Vacuum thermal insulating material of the present invention is described.
Fig. 2 is for the schematic diagram of the Production Example of waveform figuration line is described.
Fig. 3 is for the schematic diagram of the Production Example of waveform figuration line is described.
Fig. 4 is for the figure of the tooth pitch of gear is described.
Fig. 5 is for the figure from the structure of the inorfil silk thread of waveform figuration line is described.
Fig. 6 is for the figure from the inorfil silk thread of waveform figuration line is described.
Fig. 7 is for the schematic diagram of the formation of bulky yarn is described.
Fig. 8 is for the schematic diagram from the formation of the silk thread of bulky yarn is described.
Fig. 9 is the schematic diagram engaging for illustrative graph shape silk thread.
Figure 10 is for the schematic diagram from the joint of the inorfil tow of bulky yarn is described.
Figure 11 is the schematic diagram that uses the inorganic fiber sheet material that contains the silk thread bundle in inorganic bond situation for illustrating.
Embodiment
As shown in Figure 1, Vacuum thermal insulating material of the present invention is to contain inorganic fiber sheet material 1,1 ... the Vacuum thermal insulating material of the housing material 11 that this duplexer 10 of the duplexer 10 of stacked formation and vacuum seal forms.
And in described inorganic fiber sheet material 1, the inorfil tow of the curve-like inorfil silk thread that contains Cutting Length (L) 3-12mm is in random dispersion, and at least a portion of described inorfil tow is engaged with each other and forms laminar.
Described curve-like inorfil silk thread can obtain by the long filament with given length waveform curve (two-dimensional curve), can also obtain by the long filament of the three-dimensional curve with given length cutting auger sample, can also obtain by there is randomly the curve-like silk thread of looping or curve with given length cutting.Representational enumerating: by the long filament (waveform figuration line) that is the waveform that formed by curve by figuration in the mode in 1/2-1 cycle that forms described waveform with the silk thread (from the silk thread of waveform figuration line) of the cut-space of 3mm-12mm, and by the heart yearn that contains multifilament with on the surface of this heart yearn, form looping and/or silk thread (from the silk thread of bulky yarn) that the bulky yarn of the sheath line of the multifilament that relax and tangles cuts with length 3-12mm.
In the sheet inorfil tow of structure, described curve-like silk thread can only form necessary amount with thin slice and be contained.The containing ratio of curve-like silk thread is the more than 15% of inorfil silk thread integral body according to the kind of curve-like silk thread (size, shape etc.), is preferably more than 50%, and more than 70%, be more preferably all more preferably curve-like silk thread.
The ceramic fibers such as the inorfil useable glass fiber of formation silk thread, basalt fibre, silicon dioxide fibre, alumina fibre etc., preferred glass fibers.Also the polytype inorfil of use capable of being combined.In addition, the in the situation that of congener inorfil, for example, in glass fibre, polytype glass fibre that composition capable of being combined is different.
The fiber diameter of inorfil silk thread is preferably 0.5-15 μ m.If surpass 15 μ m, the rigidity of inorfil is high, easily promotes the heat conduction between inorganic fiber sheet material.On the other hand, if less than 0.5 μ m, rigidity is too low, has the tendency being difficult to by the joint performance fixture effect of fiber.Although adiabaticity is deteriorated a little during for 0.5-3 μ m, when low rigidity is easy to the installation transfiguration of crooked position etc., during for 3-15 μ m, can further improve heat-insulating property.
In addition, in the situation that contains polytype inorfil silk thread, preferably in each comfortable above-mentioned scope.
With regard to representational inorfil silk thread (from the silk thread of waveform figuration line and from the silk thread of bulky yarn), describe below.
< is from the inorfil tow > of waveform figuration line
(1) waveform figuration line and manufacture method thereof
Waveform figuration line is the silk thread of the waveform that forming curves forms on the long filament of straight line shape.
Here the waveform that curve forms refers to the rectangular wave that do not comprise straight line and form, pyramidal wave etc.In addition, the so-called waveform forming with two-dimensional curve (plane curve), refers to the curve of this class three-dimensional that does not comprise that the 1/2-1 rotating part by spiral obtains.The shape of waveform is not particularly limited, and is not limited to sine wave, and adopting by sin, cos, involute curve etc. being carried out to the whole of waveform that various combinations describe is object.
The long filament that forms waveform figuration line is preferably used multifilament.The multifilament of glass fibre is that the fibers melt liquid flowing out from smelting furnace is obtained by offering the nozzle in a plurality of holes that form multifilament.
The method that forms waveform on straight line shape long filament is not particularly limited, in the situation that inorfil is glass fibre, and can be by making long stapled long filament by carrying out between 2 gears.Particularly, can enumerate: as shown in Figure 2, heating straight line shape long filament 2 makes it pass through the method between gear 3,3; As shown in Figure 3, by the straight line shape long filament 2 ' that carries out melt spinning from nozzle 4 cooling curing by between gear 3 ', 3 ', cooling method afterwards; Heat long stapled long filament, make it pass through method between gear etc.Any method all can by make straight line shape long filament 2,2 ' under near the state being heated to the melt temperature of glass fibre by between gear, and form the long filament (waveform figuration line) 5 with waveform.
The shape of the gear using in waveform figuration is not particularly limited, and object is for obtaining curve-like inorfil silk thread.Be not only the shape by adjusting gear, the distance of (between 3-3,3 '-3 ' between) or the rate of delivery of long filament etc. by regulating in Fig. 2, Fig. 3 between 2 gears, also can change amplitude, the waveform of wavy curve.
Gear as using, for example, in gear as shown in Figure 4, preferentially adopt 1-3 mould, tooth pitch 3-12mm.By this mode, the shape of the waveform that the wavelength that can form wavelength 1/2-1 cycle portions is 3-12mm.
(2) curve-like inorfil silk thread
Curvilinear inorfil silk thread is interval with 3mm-12mm, the preferred interval of 4-9mm, preferably to form the mode in the 1/2-1 cycle of described waveform, and waveform figuration line as above of cutting and obtaining.
For example, in the situation of arrow A shown in Figure 5, the cutting of the position of B, in Fig. 5, between A-A, between (1/2 cycle), B-B, (1 cycle) is Cutting Length L, is equivalent to the wavelength of this curve-like inorfil silk thread.
In addition, cutting position is not limited to the peak portion of waveform, the peak position of paddy portion, and can take the position arbitrarily of peak portion, paddy portion is starting point, with every 1/2-1 periodic wave progress row cutting.As shown in Figure 6, in the situation that wavelength was 1/2 cycle, can be the waveform (with reference to Fig. 6 (a)) from the peak of the peak to peak portion of the paddy portion of waveform, can be also the waveform (with reference to Fig. 6 (b)) of paddy portion or the peak portion of waveform.In addition, when wavelength is the situation in 1 cycle, can be the waveform (with reference to Fig. 6 (c)) that contains peak portion and paddy portion, can be also the waveform (with reference to Fig. 6 (d)) that the ripple at two armpit place paddy portions of paddy portion or peak portion or half peak height of peak portion is connected to form.In addition, in Fig. 6, the waveform that solid line represents is silk thread part, and dotted line is for describing the reference section of waveform.
Although can be situation (waveform) arbitrarily, the overwhelming majority is the curve-like silk thread of waveform, and its wavelength is in the 1/2-1 cycle and be 3mm-12mm.
If L is too short for Cutting Length (wavelength), be difficult to by the making inorganic fiber sheet material of manufacturing paper with pulp.On the other hand, if Cutting Length (wavelength) L is elongated, exist because inorfil silk thread is long, flexibility decrease, is difficult to keep curvilinear tendency, so not preferred.
The peak portion height H of curve-like inorfil silk thread depends on the position in the 1/2-1 cycle of selecting continuous waveform, is the size of the scope of 1 times of amplitude to 2 times amplitude.The curve-like inorfil silk thread that the present invention uses preferably has the waveform that amplitude is 0.5-3mm, more preferably 0.5-2mm.Therefore, because the peak portion height H of curve-like inorfil silk thread has the wavelength of the 1/2-1 cycle portions of waveform, so according to the relevant position of waveform, the preferably scope of 1-6mm, more preferably 1-4mm.
Conventionally 10-100 root waveform figuration line is tied up and, utilize guillotine etc. by cutting into specific length, to carry out the cutting of waveform figuration line.
The normally many inorfil silk threads that obtain by the waveform figuration line with specific interval cutting multifilament form the tow of restrainting.Due to this tow be can 11 the tow of the independent state disperseing, so before the manufacture that offers inorganic fiber sheet material or in the appropriate step of the manufacture of inorganic fiber sheet material, preferably dissociate and use can be separated into the mode of single inorfil silk thread.
In addition, the material of inorganic fiber sheet material is in the situation that use, from the curve-like silk thread of waveform figuration line, is not limited to highly all aggregates of a kind of equal curve-like silk thread of waveform, wavelength, peak portion.Also can use by changing kind, the cutting position of waveform figuration line the inorfil tow that polytype curve-like silk thread with different waveforms, wavelength, peak portion height is combined.
< is from the inorfil tow > of bulky yarn
Because be by the bulky yarn cutting of the sheath line of the heart yearn that contains multifilament and the multifilament that tangles on the surface of this heart yearn and obtain from the inorfil tow of bulky yarn, so be generally the silk thread of straight line shape and the aggregate of curvilinear silk thread combination.
Here, the silk thread of straight line shape, except straight line silk thread completely, also refers to have the silk thread that can distinguish the grazing that degree is high with curve-like silk thread.
(1) bulky yarn and manufacture method thereof
For bulky yarn, for example, as shown in Figure 7, adopting multifilament threads is heart yearn 6, and the sheath line 7 of multifilament is in surrounding's formation looping of this heart yearn 6 or lax, and tangles.In addition, also form the multifilament of heart yearn and form the multifilament formation looping of sheath line or relax, and tangle (diagram).
As such bulky yarn, for example, the bulky yarn that is known as so-called TASLAN textured yarn or voluminous yarn that fluid sinuous flow is processed has been implemented in known use on multifilament lines, uses double-contracting covered yarn machine etc., decoration is coated to the fancy yarn of rotation manufacturing etc. on heart yearn with line.
This bulky yarn for example, can be manufactured with the following method.
That is, make the fibers melt liquid flowing out from smelting furnace by offering the nozzle in the hole of the number that forms multifilament, be extruded as multifilament lines, the alignment of heart yearn.Other nozzles that arrange from the surrounding forming the nozzle of heart yearn are extruded the long filament that forms sheath line.By spraying fluid (being generally air) on the multifilament forming sheath line, form looping or lax, and become entangled on the multifilament lines that form heart yearn.From forming a plurality of minimum loopings, lax viewpoint, nozzle is preferably used fluid sinuous flow nozzle or so-called TASLAN nozzle.
Or also many multifilament threads can be carried out to fluid simultaneously and confuse processing, afterwards, by extending, form.By changing fluid to be supplied to, confuse the delivery volume between 2 multifilament threads of processing or change the air pressure that fluid confuses to use in processing, can change looping or lax degree.
The inorfil that forms heart yearn can be congener inorfil with the inorfil that forms sheath line, can be also different types of inorfil.
In addition, the fiber diameter (d2) of the inorfil of the fiber diameter (d1) of the inorfil of formation heart yearn and formation sheath line can be the same or different.Preferably, the fiber diameter (d2) of the 2nd inorfil of formation sheath line is for forming the fiber diameter (d1) following (that is, d2≤d1) of the 1st inorfil of heart yearn.
In addition, the long filament using in heart yearn is not limited to cross section circle, can be also the special-shaped long filaments such as section triangle, cross section are star-like, cross section Y type, cross section C type.By adopting odd-shaped cross section, can improve the winding between inorfil, making not to need tackiness agent.While in addition, using profiled filament, there is the tendency of adiabaticity excellence.
The fiber diameter that forms the inorfil of heart yearn, the sheath line 0.5-15 μ m that preferably respectively does for oneself.If surpass 15 μ m, the rigidity of inorfil is high, easily promotes the heat conduction between inorganic fiber sheet material.On the other hand, if rigidity is too low less than 0.5 μ m, there is the tendency being difficult to by the winding performance fixture effect of fiber.Although adiabaticity is slightly deteriorated when 0.5-3 μ m, when low rigidity and becoming easily to the installation at the positions such as bending can further improve heat-insulating property during 3-15 μ m.
(2) from the inorfil silk thread of bulky yarn
Above-described bulky yarn is cut to 3mm-12mm, and preferably 4-9mm, obtains inorfil tow.In Fig. 7 and Fig. 8, L is Cutting Length.Therefore, the length of the silk thread being obtained by heart yearn and Cutting Length L are almost equal, but the Length Ratio Cutting Length L of the curve-like silk thread being obtained by sheath line is longer.Particularly, although depend on the kind of bulky yarn, in the situation that cut bulky yarn with the length of 3mm-12mm, conventionally forming length is the combination of straight line shape silk thread and the curve-like silk thread with looping or curve that length of staple is 6mm-25mm of 3mm-12mm.
Particularly, as shown in Figure 8, except sheath line 7 is wrapped in those (Fig. 8 (a)) on heart yearn 6, on those of the looping 7a remaining (Fig. 8 (b)) that is also mixed with sheath line 7, end, a part for the looping of sheath line 7 is untied and remaining those (Fig. 8 (c)) etc.Therefore, if Cutting Length L is too short, be difficult to obtain being suitable for the curve-like silk thread of joint, be difficult to by the making inorganic fiber sheet material of manufacturing paper with pulp.On the other hand, because the grazing of the long filament using in heart yearn is high, if Cutting Length L is elongated, the straight line shape silk thread existing angularly with respect to face direction exists will poke the state of a plurality of inorganic fiber sheet material faces, between a plurality of sheet materials, easily there is heat conduction, so not preferred.
The manufacture method > of < inorganic fiber sheet material
Inorganic fiber sheet material is by the fiber suspension stirring, dissociation contains inorfil tow and dispersing agent, and the fiber dispersion obtaining (material liquid) wet type is manufactured paper with pulp and prepared.
As inorfil tow, can use the tow that contains curve-like silk thread of other manufacture, but use the described tow from waveform figuration line or on manufacturing, be easily from the tow of bulky yarn.In addition, compare with using the situation of the aggregate of self-existent silk thread, have the tendency that ratio is higher that exists of the silk thread that engages, thereby improve as intensity, the stability of sheet material.
(1) modulation of material liquid
Material liquid (fiber dispersion) can be by inorfil tow and dispersing agent are added in the water of dispersion medium, prepared by stirring, dissociation.In the situation that the tow being obtained by multifilament is preferably dissociated into independently inorfil silk thread in the stage of this stirring.The making beating step stir, dissociation being equivalent to papermaking, can utilize refiner (refiner) etc. to carry out, and preferably sets into multifilament is dissociated into the independently treatment conditions of the degree of fiber (temperature, rotating speed, pressure etc.), so that glass fibre is not lost.
Described dispersing agent is can make the described fibre tow consisting of multifilament in whipping step described later easily be dissociated into independently fiber, and the mode of further stably disperseing in water is allocated into.As dispersing agent, can use nonionic surfactant such as PAG fatty acid ester type etc.
Dispersing agent is not particularly limited, and conventionally preferably with respect to fiber wire 100 mass parts, coordinates 0.5-2 mass parts.
In the situation that use the inorfil tow from waveform figuration line, because nearly all silk thread is all curve-like silk thread, so form a plurality of curve-like inorfil silk thread random dispersion in material liquid, and state of engaging with other curve-like inorfil silk thread of at least a portion curve-like inorfil silk thread.
In addition,, in the situation that use inorfil silk thread from bulky yarn as inorfil silk thread, in the modulation step of material liquid, the sheath line of fiber wire is untied from heart yearn, and the multifilament that forms sheath line, heart yearn is dissociated into independently fiber.Therefore, in material liquid, the inorfil silk thread that grazing that formation is 3-12mm from the length of staple of heart yearn is relatively high and the state mixing from the curvilinear inorfil silk thread of sheath line, this curvilinear inorfil silk thread is that length of staple is 6-25mm left and right, remaining loop-shaped or state that the so-called stample fibers of enforcement such as waveform shape are formed.And, can think, from the curve of the curve-like silk thread of sheath line, form fixture, from the silk thread of the straight line shape of heart yearn with from the curvilinear silk thread of sheath line, with the state that is wound around, physically hitches, disperse.That is, form the state of changing the state dispersion of (minute cladodification) with straight line shape silk thread and curve-like silk thread microfilament (fibril).
Replacement is from the fibre tow of bulky yarn, for example, can consider to use and prepare respectively the curve-like silk thread with looping or curve that straight line shape silk thread that length is 3mm-12mm and length are 6mm-25mm, the material liquid coordinate, modulation forming.But, usually, obtain this curve-like silk thread through the 6-25mm left and right of stample fiber length is not easy on manufacturing, in addition, by stirring under the condition of not losing at glass fibre, to make self-existent curve-like silk thread and straight line shape silk thread be in fact difficult to form that branched mode is wound around.From such reason, use meaningful from the tow of bulky yarn.
As mentioned above in the material liquid of modulation, curve-like inorfil silk thread is mixed with separately those that independent those and the silk thread disperseing engage each other.
In the situation that from the inorfil tow of waveform figuration line, can be wound around as Fig. 9 (a) mode (b).It is situation about being wound around between the inorfil silk thread of 1 cycle portions that Fig. 9 (a) illustrates wavelength, and it is situation about being wound around between the inorfil silk thread of 1/2 cycle portions that Fig. 9 (b) illustrates wavelength.
As the inorfil silk thread from bulky yarn, in the situation that the mixture of straight line shape inorfil silk thread and curve-like inorfil silk thread, as shown in figure 10, by straight line shape inorfil silk thread 8, join on curve-like inorfil silk thread 9, the part that straight line shape silk thread also can be used as tow engages.In this, by using the short chopping from the silk thread of heart yearn or the bulky yarn that is wound around from the silk thread of sheath line, easily obtain also containing straight line shape silk thread, be wound in the dispersion liquid of branched inorfil tow.By such winding, even without tackiness agent, also can make whole thin layer inorganic fiber sheet material directed in face direction.
As mentioned above, due in dispersion liquid between curve-like inorfil silk thread or curve-like inorfil silk thread and straight line shape inorfil silk thread be wound around, even if therefore also can form laminarly without tackiness agent, but as required, also can add cooperation inorganic bond.
Described inorganic bond is that cataloid, alumina sol etc. have adhesive material, and silica or aluminium oxide are preferably used silica or the aluminium oxide of the stable offspring that forms chain, beads shape, needle-like.Particularly, the major diameter that contains offspring in material liquid is that the silica of 0.01 μ m-2 μ m left and right or aluminium oxide are as the colloid solution disperseing in water.This inorganic bond can stably be attached to fiber surface, dispersing in the time of can preventing from vacuumizing, dispersing in the container of Vacuum thermal insulating material.Like this, the inorganic bond using in the present invention sneaking into short fibre from glass wool aspect being difficult for being scattered or dispersing from inorganic fiber sheet material, solids is different.
In addition, the content of described inorganic bond particle, with respect to 100 mass parts inorfil silk threads, is preferably below 2 mass parts, more preferably below 1 mass parts, more preferably below 0.5 mass parts.
(2) wet type is manufactured paper with pulp
By carrying out wet type by the material liquid of above-mentioned modulation, manufacture paper with pulp, sheet.The method that wet type is manufactured paper with pulp (copy paper step) is not particularly limited, and for example, carries out by the following method.
Manufacture paper with pulp and conventionally by the system of wet end (wire part) and dry end combination, undertaken.
Particularly,, as limiting, the material liquid of modulation is not sprayed to wet end from stock inlet, move on the net, water is to outflow off the net, dehydration simultaneously, and further suction, dehydration, form moisture network.Next, at pressing part, between press roller and felt rug, squeeze, dewater, at the further evaporation drying moisture of dry end, obtain inorganic fiber sheet material.At wet end, can use the known paper making machines such as fourdrinier paper machine, short net paper making machine, inclination net type paper making machine.
The basic weight of inorganic fiber sheet material preferably adopts 30-600g/m
2.Less than 30g/m
2time, because the diameter in the space existing in inorganic fiber sheet material becomes large, the impact of the pyroconductivity of gas is become to large, so there is the tendency declining as Vacuum thermal insulating material heat-insulating property.On the other hand, if surpass 600g/m
2, the drying efficiency while manufacturing nonwovens by glass fibre declines, and productivity declines, so not preferred.
The inorganic fiber sheet material of making as mentioned above, for example, in the situation that use the inorfil tow from bulky yarn, as shown in figure 11, from the inorfil silk thread 8 of the straight line shape of heart yearn with from the curvilinear inorfil silk thread 9 of sheath line, be wound around, in this external situation that contains inorganic bond, inorganic bond 20, to be attached to the lip-deep mode of straight line shape inorfil silk thread 8 and/or curvilinear inorfil 9, forms laminar.
In the inorganic fiber sheet material of making as mentioned above, the most of random dispersion that forms the curve-like inorfil silk thread of sheet material forms plane.But the curve-like inorfil silk thread of a part is wound around and exists in crosslinked mode in described plane or between stacked plane.From the relation of the wavelength with curve-like inorfil silk thread, in the time of not crosslinked a plurality of layers, because this winding exists ratio few, so it is little to result from the decline of adiabaticity of the heat conduction that caused by winding etc.And can reduce required amount of binder by winding.In addition, the inorfil silk thread of a part can be to exist from the outstanding mode of plane, but the relation from the peak portion height H with curve-like inorfil silk thread, even in the situation that a part for silk thread is outstanding from inorganic fiber sheet material surface, projection also can be poked stacked a plurality of inorganic fiber sheet materials hardly.Therefore, result is: in the inorganic fiber sheet material of the constituting component as Vacuum thermal insulating material of the present invention, the existence of the inorfil silk thread being wound around, from the existence of the outstanding curve-like inorfil silk thread of plane, the decline of the adiabaticity causing with the winding of silk thread, outstanding etc. is compared, the effect that causes reducing required amount of binder is larger, thereby can realize the raising of adiabaticity.
In the situation that from the inorfil silk thread of bulky yarn, not only contain curve-like silk thread, also contain straight line shape silk thread.But, due to engaging of straight line shape silk thread and curve-like silk thread, there is the tendency suppressing with the angle orientation vertical with face direction.And because curve-like silk thread will be curling, therefore be difficult to the angle orientation vertical with face direction, but directed along the mode of thickness direction with the length direction of fiber.Therefore, even in the situation that straight line shape silk thread or curve-like silk thread will be outstanding from inorganic fiber sheet material surface, also can poke hardly stacked a plurality of inorganic fiber sheet materials, with use from the situation of the inorfil tow of waveform figuration line similarly, result is to cause that with the winding of silk thread, outstanding etc. the decline of adiabaticity compares, the effect that causes reducing required amount of binder is larger, thereby can realize the raising of adiabaticity.
The manufacture > of < Vacuum thermal insulating material
(1) manufacture of duplexer
The inorganic fiber sheet material 1 that multi-disc is made is as mentioned above stacked, forms duplexer 10.The preparation of duplexer is stacked, compression inorganic fiber sheet material only.The looping of the 2nd inorfil from sheath line of giving prominence to from the face of inorganic fiber sheet material or a lax part, with respect to stacked inorganic fiber sheet material, can be used as fixture and work.
The fiber that can be used as fixture use makes to carry out heat between stacked inorganic fiber sheet material and conducts, but usually, by the heat conduction that contacts or cause as the embedding degree of fixture of the inorganic fiber sheet material with stacked, the decline of adiabaticity, do not become problem in gap between the fiber of stacked inorganic fiber sheet material.
(2) housing material
Housing material 11 is the film of gas barrier property excellence to be made to the material of pouch.Film as gas barrier property excellence, conventionally, the metal foils such as the metal steam plated films such as the ethylene-vinyl alcohol copolymer resin film of gas barrier property excellence, aluminium or aluminium are used as mesosphere, and two surface is upper has used the stacked film of the thermoplastic resin films such as high density polyethylene (HDPE), polypropylene, PA membrane stacked.
In the bag on three limits that seals described stacked film, hold the duplexer 10 of making as mentioned above, after vacuumizing, by by empty limit thermal fusion welding, seal, thus vacuum seal.
For keeping the initial stage heat-insulating property of Vacuum thermal insulating material and heat-insulating property in time, in exterior package, except duplexer, also can enclose the getters such as adsorbent, moisture adsorbent.
Even if there is organic bond, the fine particle dispersing, short fibre that the Vacuum thermal insulating material of formation as above does not exist degree of vacuum height can volatilize yet, thereby can keep for a long time the insulating characteristics at initial stage.
Industrial utilizability
Vacuum thermal insulating material of the present invention does not contain meeting volatilization, the organic bond of convection current, particulate in the duplexer that forms thermoinsulation material main body, thereby adiabaticity deteriorated tailing off in time.Therefore, can be used as the thermoinsulation material of the machine of needs adiabaticity for a long time, highly.Manufacture method of the present invention can be used as the manufacture method of Vacuum thermal insulating material of the present invention.
Description of reference numerals
1 inorganic fiber sheet material
7 tackiness agents
2,2 ' straight line shape long filament
3,3 ' gear
5 waveform figuration long filaments
6 heart yearns
7 sheath lines
8 silk threads from heart yearn
9 silk threads from sheath line
10 duplexers
11 housing materials
20 tackiness agents
Claims (12)
1. Vacuum thermal insulating material, comprises the duplexer of inorganic fiber sheet material and the housing material that this duplexer of vacuum seal forms, wherein,
In described inorganic fiber sheet material, the inorfil tow random dispersion of the curve-like inorfil silk thread that contains Cutting Length (L) 3-12mm, and at least a portion of described inorfil tow is engaged with each other.
2. Vacuum thermal insulating material claimed in claim 1, wherein said curve-like inorfil silk thread is that the long filament that has been endowed the waveform shape consisting of curve is formed with the cut-space of 3mm-12mm to become the mode in the 1/2-1 cycle of described waveform.
3. Vacuum thermal insulating material claimed in claim 2, the peak portion height (2 times of values of amplitude) of wherein said curve-like inorfil silk thread is 1-6mm.
4. Vacuum thermal insulating material claimed in claim 1, wherein said inorfil tow is that bulky yarn is obtained with the length cutting of 3mm-12mm, the heart yearn that described bulky yarn contains multifilament and form looping and/or the sheath line of the multifilament that relaxes and tangle on the surface of this heart yearn
The multifilament that described curve-like inorfil silk thread forms described sheath line by cutting obtains.
5. Vacuum thermal insulating material claimed in claim 4, wherein said curve-like inorfil silk thread is that to have length be the looping of 6mm-25mm or the silk thread of curve.
6. the Vacuum thermal insulating material described in claim 4 or 5, the multifilament that wherein forms described heart yearn is section profiled fiber.
7. the Vacuum thermal insulating material described in claim 1-6 any one, the fiber diameter of wherein said inorfil silk thread is 0.5-15 μ m.
8. the Vacuum thermal insulating material described in claim 1-7 any one, described inorfil silk thread is glass fibre.
9. the Vacuum thermal insulating material described in claim 1-8 any one, described inorganic fiber sheet material is by the dispersion liquid wet type of described inorfil silk thread is manufactured paper with pulp and obtained.
10. the Vacuum thermal insulating material described in claim 1-9 any one, the containing ratio of described curve-like silk thread is the more than 15% of described inorfil silk thread integral body.
The manufacture method of 11. Vacuum thermal insulating material, described Vacuum thermal insulating material comprises the housing material that the duplexer of inorganic fiber sheet material and this duplexer of vacuum seal form, described manufacture method is characterised in that,
Comprise:
Material liquid modulation step, stirs the fiber suspension contain inorfil tow and dispersing agent and modulates fiber dispersion; With
Copy paper step, the manufacture paper with pulp described fiber dispersion that obtains and make inorganic fiber sheet material of wet type,
As described inorfil tow, use the inorfil silk thread that bulky yarn is formed with the length cutting of 3mm-12mm, the heart yearn that described bulky yarn contains multifilament and form looping and/or the sheath line of the multifilament that relaxes and tangle on the surface of this heart yearn.
The manufacture method of 12. inorganic fiber sheet materials, the Vacuum thermal insulating material of the housing material that described inorganic fiber sheet material forms for the duplexer that contains described inorganic fiber sheet material and this duplexer of vacuum seal, described manufacture method is characterised in that, comprising:
Material liquid modulation step, stirs the fiber suspension contain inorfil tow and dispersing agent and modulates fiber dispersion; With
Copy paper step, the manufacture paper with pulp described fiber dispersion that obtains and make inorganic fiber sheet material of wet type,
And comprise the manufacture paper with pulp step of dispersion liquid of described inorfil tow of wet type,
Described inorfil tow is the 1/2-1 cycle of the waveform in consisting of curve and the inorfil silk thread that wavelength is 3mm-12mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012029321 | 2012-02-14 | ||
| JP2012-029321 | 2012-02-14 | ||
| PCT/JP2013/052992 WO2013121992A1 (en) | 2012-02-14 | 2013-02-08 | Vacuum insulation material and method for manufacturing same |
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| Publication Number | Publication Date |
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| CN104105917A true CN104105917A (en) | 2014-10-15 |
| CN104105917B CN104105917B (en) | 2016-08-24 |
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| CN201380008960.6A Active CN104105917B (en) | 2012-02-14 | 2013-02-08 | Vacuum heat insulation materials and manufacture method thereof |
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|---|---|
| JP (1) | JP6068369B2 (en) |
| CN (1) | CN104105917B (en) |
| WO (1) | WO2013121992A1 (en) |
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|---|---|---|---|---|
| CN109891143A (en) * | 2016-11-10 | 2019-06-14 | 三菱电机株式会社 | The manufacturing device of vacuum heat insulation material, the manufacturing method of vacuum heat insulation material and vacuum heat insulation material |
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| CN105102874B (en) * | 2013-04-05 | 2016-12-21 | 三菱电机株式会社 | Vacuumed insulation panel and possess the cool-bag of this Vacuumed insulation panel, thermal insulator and heat pump hot-water supply system |
| JP6594618B2 (en) * | 2013-11-26 | 2019-10-23 | 三星電子株式会社 | Vacuum insulation, insulation box and refrigerator |
| JP6997263B1 (en) | 2020-07-10 | 2022-01-17 | イビデン株式会社 | Heat transfer suppression sheet and assembled battery |
| JP7364739B2 (en) * | 2021-12-28 | 2023-10-18 | イビデン株式会社 | Heat transfer suppression sheet and assembled battery |
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- 2013-02-08 JP JP2013558669A patent/JP6068369B2/en active Active
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| JPH0911374A (en) * | 1995-06-27 | 1997-01-14 | Asahi Fiber Glass Co Ltd | Fiber aggregate and heat-insulating sound-absorbing material |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6068369B2 (en) | 2017-01-25 |
| JPWO2013121992A1 (en) | 2015-05-11 |
| WO2013121992A1 (en) | 2013-08-22 |
| CN104105917B (en) | 2016-08-24 |
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