CN104261684A - Vacuum insulation board core material and manufacturing method thereof - Google Patents
Vacuum insulation board core material and manufacturing method thereof Download PDFInfo
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- CN104261684A CN104261684A CN201410475444.0A CN201410475444A CN104261684A CN 104261684 A CN104261684 A CN 104261684A CN 201410475444 A CN201410475444 A CN 201410475444A CN 104261684 A CN104261684 A CN 104261684A
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a vacuum insulation board core material and a manufacturing method thereof. The core material comprises the following components in parts by mass: 50-70 parts of SiO2, 0-7 parts of Al2O3, 2-15 parts of CaO, 0-6 parts of MgO, 8-20 parts of Na2O+K2O, 12-15.5 parts of B2O3, 0.1-7.0 parts of ZnO and at most 1.0 part of other components. By adopting the high-boron-content glass wool microfiber, the core material has the advantages of high fiber strength, high fiber smoothness and smooth molding process, and can be the best core material for a high-performance vacuum insulation board; and since the high-boron-content vacuum insulation board core material has the advantages of high fiber strength and high smoothness, only a small amount of the glass dust drops in the process of producing the core material and manufacturing the dry-process vacuum insulation board, thereby effectively improving the manufacturing environment of the operator and greatly reducing the dust treatment cost of the enterprise.
Description
Technical field
The present invention relates to a kind of thermal insulation material, be specifically related to a kind of high performance core material of vacuum heat insulation plate and manufacture method thereof.
Background technology
The dry vacuum heat-insulating shield making core of superfine glass primitive fiber is in current known solid insulating material, the A level inorganic non-combustible material that cost performance is best, wide application market is had in thermal insulation obstruct, be mainly used in refrigerator abroad, refrigerator-freezer, frozen products insulated container, freeze storehouse, medical treatment cold insulation equipment, on the facilities and equipments such as vending machine, efficiently can reach energy-conservation easily and effect that is cold insulation, at home, apply not yet extensive, existing organic materials grade of not only burning does not reach A level, thermal conductivity is substantially all in 0.01-0.02W/m.k scope, energy-saving heat-insulated effect only has about 10% of vacuum heat-insulating plate, the domestic production process having wet method to make vacuum heat-insulating plate at present, need the slurrying that adds water, repave plate filtration to dewater, then dewater, final high temperature is dried, water content drops to less than 0.4%, cutting forms again, production process not only energy consumption significantly rises, and the thermal conductivity of the vacuum heat-insulating plate made is all the time at more than 0.0025w/k.w, and after the vacuum heat-insulating plate time limit of service made of wet method arrived, because original glass fibre breaks into very fiber fines, be difficult to reclaim.In the face of energy demand day by day in short supply, energy-conservation household electrical appliances and and energy-conservation cold insulation facilities and equipment be the main flow of demand, especially in Cryo Heat Insulation (0-100 DEG C) and very low temperature (-100-273 DEG C) adiabatic field, exploitation thermal conductivity 0.0025w/k.m and following even more high performance dry vacuum heat-insulating shield extremely urgent.And dry vacuum heat-insulating shield is because fiber is long, within 20 years, arrive after date as raw material, directly at furnace, can not cause any injury and burden to environment, be the adiabatic heat-insulation sound-absorption and heat-insulation product of a kind of green, environmental protection.
Summary of the invention
The object of the invention is to the defect solving above-mentioned currently available products and technology, a kind of high performance core material of vacuum heat insulation plate and manufacture method thereof are provided.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of core material of vacuum heat insulation plate, comprises the following component in mass fraction:
SiO
2: 50-70 part;
Al
2o
3: 0-7 part;
CaO:2-15 part;
MgO:0-6 part;
Na
2o+K
2o:8-20 part;
B
2o
3: 12-15.5 part;
ZnO:0.1-7.0；
Other composition≤1.0 part;
Other composition≤1.0 part, comprise Fe
2o
3, FeO, TiO
2, BaO, MnO, SO
3, P
2o
5, difference≤0.1%.
Total mass number is 100 parts, and the beating degree of described core material of vacuum heat insulation plate is 15 to 28 ° of SR, and diameter is 1.5 to 4.0um.
The quality index of described core material of vacuum heat insulation plate is: glass slag content≤5%, diameter≤4.0um, and water ratio is less than 0.8%, area density deviation≤55%, dry vacuum heat-insulating shield thermal conductivity≤0.0025w/k.m that core is obtained thus.
The detection method of described area density deviation is by one piece of cotton tiling, intercepts 25 blocks of 180*180mm cores, be weighed as G in the middle of cotton, gets the mean value G of 25 pieces of cotton weight
0, the deviation of the area density of core is calculated as follows:
(G-G
0)*100/G
0
The preparation method of core material of vacuum heat insulation plate comprises the steps:
(1), raw material weighing: by mass fraction following raw material weighed and be mixed into uniform compound:
Quartz sand: 28-60 part,
Feldspar: 0-33 part,
Borax: 28-38 part,
Calcite: 2-25 part,
Rhombspar: 0-30 part,
Soda ash: 3-30 part,
Fluorite: 0.1-1.2 part;
(2), fusing: compound is added in the melting pool of kiln and carry out melt processed, the glass metal obtain evenly, clarified;
(3), fibroblast: glass metal is put into bushing, centrifugal pan, be full of the glass metal of dishful in centrifugal pan, form glassy membrane, enter in whizzer under the effect of powerful high velocity air traction and carry out spinning, the size of the adjustment spraying ring spray water yield, the glass wool of obtained uniform diameter;
(4), collection is cotton shaping: sent into by glass wool and wave bucket, hunting frequency and the amplitude of oscillation of bucket are waved in adjustment, the wind-force size of adjustment negative-pressure air fan, the glass wool spun is fallen on cotton collecting machine equably, when glass wool is fallen on cotton collecting machine, the microglass fiber holded up with slivering can not be had, all glass wools are consistent with cotton collecting machine direction as far as possible, by the glass wool layer trimming of completing, winding, make qualified glass lap (core material of vacuum heat insulation plate), or cut into the foliated glass cotton core material (core material of vacuum heat insulation plate) of certain length.
The melt processed of described (2) step comprises 5 stages: silicate formation stages, glass metal formation stages, glass metal clarification stage, glass metal homogenization stage and glass metal fibroblast stage, and kiln temperature is 1350-1420 DEG C.
In described (3) step, the temperature of glass metal is 1350-1420 DEG C, and the channel temperature transporting glass metal is 1130-1180 DEG C, and the temperature of centrifugal pan is 940-980 DEG C, and the rotating speed of whizzer is 2000-3200 rev/min.
In described (4) step, the hunting frequency of waving bucket is 15-25 beat/min, and controlling negative-pressure air fan rotating speed is 1000-1200 rev/min.
The present invention is used for the B of core material of vacuum heat insulation plate
2o
3mass percentage is up to 12-15.5%, the intensity of the glass wool primitive fiber adopting high roc content to form not only fiber is high, fiber is soft and smooth, smoothly shaping, be do the most excellent core of high-performance vacuum heat-insulating plate, adopt simultaneously the core material of vacuum heat insulation plate of high roc content due to fibre strength high, soft and smooth, the glass dust dropped when producing core and manufacturing dry vacuum heat-insulating shield is considerably less, effectively improves the manufacturing environment of operator, greatly reduces the expense of company's treating flour dust.
Embodiment
Embodiment 1
Following component in mass fraction is mixed to form compound:
Accurately take silica powder 41.8 parts; Soda ash 7.3 parts; Lithium feldspar 7.6 parts; 1.1 parts, calcite; Rhombspar 7.35 parts; Albite 10.3 parts; Borax 23.9 parts, 0.5 part, fluorite; Be mixed into compound.
Compound is added in the melting pool of kiln and carry out melt processed, obtain glass metal that is even, clarification, the melt processed of described compound comprises 5 stages: silicate formation stages, glass metal formation stages, glass metal clarification stage, glass metal homogenization stage and glass metal fibroblast stage, control kiln temperature 1400 DEG C, regenerator temperature 870 DEG C
The channel temperature controlling to transport glass metal is 1180 DEG C, controlling the temperature of glass metal is 1140 DEG C, and the temperature controlling centrifugal pan is 980 DEG C, glass metal is put into bushing by passage, centrifugal pan enters whizzer and carry out spinning, 2600 revs/min, whizzer, obtained glass wool;
Sent into by glass wool and wave bucket, the hunting frequency controlling to wave bucket is 23 beats/min, and controlling negative-pressure air fan rotating speed is 800 revs/min, and the glass wool spun will be fallen on cotton collecting machine equably.By the glass wool layer trimming of completing, winding, makes qualified glass lap, packs, packs under the state that lap does not vacuumize.
Obtained glass wool is carried out detect (GB/T1549-94 sodium calcium silicon aluminum boron glass chemistry analytical procedure), comprises in mass fraction:
SiO
2: 65.62 parts,
B
2o
3: 12.59 parts,
Al
2o
3: 3.86 parts,
Na
2o:10.66 part,
K
2o:0.94 part,
CaO:4.01 part,
MgO:2.06 part,
The beating degree of described glass wool is 16 ° of SR, diameter is 3.0 microns, in glass wool, the massfraction of water is 0.4%, area density grammes per square metre extreme difference is 55%, glass slag incorporation rate is 0.4%, glass wool surfacing, evenly, without pit, inclusion-free, hand is without embrittlement sense, and objectionable impurities reaches European Union ROHS standard.
Get out the core of punching press: by above-mentioned core according to the length of the VIP of client and thickness requirement, be cut into the core of certain length, be added to 6-7 layer core, is entirely sent to and rushes cotton machine;
Get out mould during core punching press, be arranged on stamping machine, go out the core meeting user specification requirement;
Made core is weighed, after meeting weight demands, is sent to drying machine drying, bake out temperature 180 DEG C, drying time 2.5 hours;
The core be baked loads in the middle of the aluminium film of oven dry in advance within the time short as far as possible, encapsulates;
The vacuum tightness of encapsulation reaches 0.25Pa, time, according to the unlike material of aluminium film, select the heating ratio 75%, packaging time 2S of package strip;
By seal vacuum heat-insulating plate bound edge, roll extrusion, J carries out visual testing, sends into 48 hours districts to be measured;
After 48 hours, record the thermal conductivity 0.0023w/m.k of vacuum heat-insulating plate;
Embodiment 2
Following component in mass fraction is mixed to form compound:
Weigh silica powder 40.6 parts, lithium feldspar 7.5 parts, albite 9.8, borax 23.5 parts, Fang Xie: 2.9 parts, rhombspar: 5.2 parts, soda ash 9.8 parts, 0.76 part, fluorite; Be mixed into compound.
Compound is added in the melting pool of kiln and carry out melt processed, obtain glass metal that is even, clarification, the melt processed of described compound comprises 5 stages: silicate formation stages, glass metal formation stages, glass metal clarification stage, glass metal homogenization stage and glass metal fibroblast stage, control kiln temperature 1370 DEG C, regenerator temperature 870 DEG C
The channel temperature controlling to transport glass metal is 1160 DEG C, controlling the temperature of glass metal is 1120 DEG C, and the temperature controlling centrifugal pan is 960 DEG C, glass metal is put into bushing by passage, centrifugal pan enters whizzer and carry out spinning, 2400 revs/min, whizzer, obtained glass wool;
Sent into by glass wool and wave bucket, the hunting frequency controlling to wave bucket is 25 beats/min, and controlling negative-pressure air fan rotating speed is 850 revs/min, and the glass wool spun will be fallen on cotton collecting machine equably.By the glass wool layer trimming of completing, winding, makes qualified glass lap, packs, packs under the state that lap does not vacuumize.
Obtained glass wool is carried out detect (GB/T1549-94 sodium calcium silicon aluminum boron glass chemistry analytical procedure), comprises in mass fraction:
SiO
2: 65.8 parts,
Al
2o
3: 3.1 parts,
CaO:4.0 part,
MgO:1.2 part,
Na
2o:11.8 part,
K
2o:1.0 part,
B
2o
3: 12.15 parts,
The beating degree of described glass wool is 19 ° of SR, diameter is 2.5 microns, in glass wool, the massfraction of water is 0.20%, area density grammes per square metre extreme difference is 45%, glass slag incorporation rate is 0.4%, glass wool surfacing, evenly, without pit, inclusion-free, hand is without embrittlement sense, and objectionable impurities reaches European Union ROHS standard.
Get out the core of punching press: by above-mentioned core according to the length of the VIP of client and thickness requirement, be cut into the core of certain length, be added to 10-12 layer core, is entirely sent to and rushes cotton machine;
Get out mould during core punching press, be arranged on stamping machine, go out the core meeting user specification requirement;
Made core is weighed, after meeting weight demands, is sent to drying machine drying, bake out temperature 200 DEG C, drying time 3.0 hours;
The core be baked loads in the middle of the aluminium film of oven dry in advance within the time short as far as possible, encapsulates;
The vacuum tightness of encapsulation reaches 0.2Pa, time, according to the unlike material of aluminium film, select the heating ratio 58%, packaging time 2S of package strip;
By seal vacuum heat-insulating plate bound edge, roll extrusion, carry out visual testing, send into 48 hours districts to be measured;
After 48 hours, record the thermal conductivity 0.002w/m.k of vacuum heat-insulating plate;
Embodiment 3
Following component in mass fraction is mixed to form compound:
Take silica powder 40.2 parts, lithium feldspar 9.2 parts, albite 9.6, borax 24.9 parts, Fang Xie: 9.6 parts, rhombspar: 5.2 parts, soda ash 9.2 parts, 0.9 part, fluorite; Be mixed into compound.
Compound is added in the melting pool of kiln and carry out melt processed, obtain glass metal that is even, clarification, the melt processed of described compound comprises 5 stages: silicate formation stages, glass metal formation stages, glass metal clarification stage, glass metal homogenization stage and glass metal fibroblast stage, control kiln temperature 1360 DEG C, regenerator temperature 870 DEG C
The channel temperature controlling to transport glass metal is 1150 DEG C, controlling the temperature of glass metal is 1120 DEG C, and the temperature controlling centrifugal pan is 960 DEG C, glass metal is put into bushing by passage, centrifugal pan enters whizzer and carry out spinning, 2400 revs/min, whizzer, obtained glass wool;
Sent into by glass wool and wave bucket, the hunting frequency controlling to wave bucket is 25 beats/min, and controlling negative-pressure air fan rotating speed is 880 revs/min, and the glass wool spun will be fallen on cotton collecting machine equably.By the glass wool layer trimming of completing, winding, makes qualified glass lap, packs, packs under the state that lap does not vacuumize.
Obtained glass wool is carried out detect (GB/T1549-94 sodium calcium silicon aluminum boron glass chemistry analytical procedure), comprises in mass fraction:
SiO
2: 65.3 parts,
Al
2o
3: 3.3 parts,
CaO:3.7 part,
MgO:1.2 part,
Na
2o:11.5 part,
K
2o:1.0 part,
B
2o
3: 14.15 parts,
The beating degree of described glass wool is 20 ° of SR, diameter is 2.3 microns, in glass wool, the massfraction of water is 0.25%, area density grammes per square metre extreme difference is 38%, glass slag incorporation rate is 0.4%, glass wool surfacing, evenly, without pit, inclusion-free, hand is without embrittlement sense, and objectionable impurities reaches European Union ROHS standard.
Get out the core of punching press: by above-mentioned core according to the length of the VIP of client and thickness requirement, be cut into the core of certain length, be added to 14-16 layer core, is entirely sent to and rushes cotton machine;
Get out mould during core punching press, be arranged on stamping machine, go out the core meeting user specification requirement;
Made core is weighed, after meeting weight demands, is sent to drying machine drying, bake out temperature 220 DEG C, drying time 3.0 hours;
The core be baked loads in the middle of the aluminium film of oven dry in advance within the time short as far as possible, encapsulates;
The vacuum tightness of encapsulation reaches 0.2Pa, time, according to the unlike material of aluminium film, select the heating ratio 65%, packaging time 2S of package strip;
By seal vacuum heat-insulating plate bound edge, roll extrusion, carry out visual testing, send into 48 hours districts to be measured;
After 48 hours, record the quick conductive coefficient 0.0016w/m.k of vacuum heat-insulating plate;
The performance comparison table of the vacuum heat-insulating plate that the core of high boron content of the present invention is made and conventional vacuum heat-insulating shield
By above-mentioned contrast table, can find out, the vacuum heat-insulating plate of high boric of the present invention, its thermal conductivity and tensile strength are all better than common vacuum heat-insulating plate, and the dust dropped when the glass dust dropped when producing core and manufacturing dry vacuum heat-insulating shield is also produced than conventional vacuum heat-insulating shield is few.
When the present invention describes specific features, structure or a feature in conjunction with any embodiment, what advocate is also fall within the scope of the invention to realize this feature, structure or feature in conjunction with other embodiments.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of and claim open in the application, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (8)
1. a core material of vacuum heat insulation plate, comprises the following component in mass fraction:
SiO
2: 50-70 part;
Al
2o
3: 0-7 part;
CaO:2-15 part;
MgO:0-6 part;
Na
2o+K
2o:8-20 part;
B
2o
3: 12-15.5 part;
ZnO:0.1-7.0；
Other composition≤1.0 part;
Total mass number is 100 parts.
2. a kind of core material of vacuum heat insulation plate according to claim 1, is characterized in that:
Other compositions described comprise Fe
2o
3, FeO, TiO
2, BaO, MnO, SO
3, P
2o
5.
3. a kind of core material of vacuum heat insulation plate according to claim 1, is characterized in that:
The quality index of described core material of vacuum heat insulation plate is: the beating degree of core is 15 to 28 ° of SR, glass slag content≤5%, diameter≤4.0um, water ratio≤0.8%, area density deviation≤55%, the dry vacuum heat-insulating shield thermal conductivity≤0.0025w/k.m obtained by core.
4. the preparation method of the core material of vacuum heat insulation plate according to claim 1-3 any one, comprises the steps:
(1), raw material weighing: by mass fraction following raw material weighed and be mixed into uniform compound:
Quartz sand: 28-60 part,
Feldspar: 0-33 part,
Borax: 28-38 part,
Calcite: 2-25 part,
Rhombspar: 0-30 part,
Soda ash: 3-30 part,
Fluorite: 0.1-1.2 part;
(2), fusing: compound is added in the melting pool of kiln and carry out melt processed, the glass metal obtain evenly, clarified;
(3), fibroblast: glass metal is put into bushing, centrifugal pan by the passage transporting glass metal, the glass metal of dishful is full of in centrifugal pan, form glassy membrane, enter in whizzer under the effect of powerful high velocity air traction and carry out spinning, the size of the adjustment spraying ring spray water yield, the glass wool of obtained uniform diameter;
(4), collection is cotton shaping: sent into by glass wool and wave bucket, hunting frequency and the amplitude of oscillation of bucket are waved in adjustment, the wind-force size of adjustment negative-pressure air fan, the glass wool spun is fallen on cotton collecting machine equably, by the glass wool layer trimming of completing, winding, makes qualified glass lap, or cuts into the foliated glass cotton core material of certain length.
5. the preparation method of core material of vacuum heat insulation plate according to claim 4, is characterized in that: when described glass wool is fallen on cotton collecting machine, can not have the microglass fiber holded up with slivering, and all glass fibre orientations and cotton collecting machine direction are consistent.
6. according to claim 4 the preparation method of core material of vacuum heat insulation plate, it is characterized in that: the melt processed of described (2) step comprises 5 stages: silicate formation stages, glass metal formation stages, glass metal clarification stage, glass metal homogenization stage and glass metal fibroblast stage, and kiln temperature is 1350-1420 DEG C.
7. according to claim 4 the preparation method of core material of vacuum heat insulation plate, it is characterized in that: in described (3) step, the temperature of glass metal is 1350-1420 DEG C, the channel temperature transporting glass metal is 1120-1180 DEG C, the temperature of centrifugal pan is 940-980 DEG C, and the rotating speed of whizzer is 2000-3200 rev/min.
8. according to claim 4 the preparation method of core material of vacuum heat insulation plate, it is characterized in that: in described (4) step, the hunting frequency of waving bucket is 15-25 beat/min, and controlling negative-pressure air fan rotating speed is 1000-1200 rev/min.
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| CN106145660A (en) * | 2015-04-01 | 2016-11-23 | 福建赛特新材股份有限公司 | A kind of online dry production system and method for glass wool vacuum insulation panel core |
| CN106149196A (en) * | 2015-04-01 | 2016-11-23 | 福建赛特新材股份有限公司 | The production system of a kind of online dry method glass wool vacuum insulation panel core and method |
| CN106367887A (en) * | 2016-08-31 | 2017-02-01 | 安徽吉曜玻璃微纤有限公司 | High-density dry-method core material and manufacturing method thereof |
| CN107311452A (en) * | 2017-06-29 | 2017-11-03 | 清远瀚江玻璃棉科技有限公司 | A kind of mineral wool of steady quality and preparation method thereof |
| CN108424095A (en) * | 2017-03-18 | 2018-08-21 | 黄河科技学院 | A kind of vacuum heat-insulating plate core material for building |
| CN109067825A (en) * | 2018-06-21 | 2018-12-21 | 苏州宏久航空防热材料科技有限公司 | A kind of centrifugal glass fibre production Internet of things system |
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