CN114105460A - Supporting device and toughening treatment method of flexible ultrathin glass - Google Patents
Supporting device and toughening treatment method of flexible ultrathin glass Download PDFInfo
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- CN114105460A CN114105460A CN202111397169.1A CN202111397169A CN114105460A CN 114105460 A CN114105460 A CN 114105460A CN 202111397169 A CN202111397169 A CN 202111397169A CN 114105460 A CN114105460 A CN 114105460A
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- 239000011521 glass Substances 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000005341 toughened glass Substances 0.000 claims abstract description 42
- 238000010583 slow cooling Methods 0.000 claims description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 26
- 238000005496 tempering Methods 0.000 claims description 26
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 17
- 239000002253 acid Substances 0.000 claims description 15
- 238000000137 annealing Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000010306 acid treatment Methods 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 6
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- 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
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention relates to a supporting device and a toughening treatment method of flexible ultrathin glass. The supporting device comprises a frame body, a support and a concave-convex piece, wherein the support comprises an auxiliary unit and a supporting piece, the auxiliary unit is positioned in the frame body and fixed on the frame body, the supporting piece is positioned in the frame body and fixed on the frame body, and the auxiliary unit and the supporting piece jointly form an accommodating space capable of accommodating glass to be tempered; one side of the supporting piece close to the accommodating space and one side of the auxiliary unit close to the accommodating space are both provided with concave-convex pieces so as to reduce the contact area of the supporting device and the glass to be toughened. The flexible ultrathin toughened glass obtained by toughening the flexible ultrathin glass by adopting the supporting device is not easy to generate marks and surface deformation, and the toughening yield of the flexible ultrathin glass is improved.
Description
Technical Field
The invention relates to the technical field of processing and treating flexible ultrathin glass, in particular to a supporting device and a toughening treatment method of the flexible ultrathin glass.
Background
Flexible Glass refers to ultra-thin Glass having a thickness of no more than 0.1 mm. The flexible glass can be bent, has the hardness, transparency, heat resistance, electrical insulation, air impermeability and stable mechanical and chemical properties in oxidation and illumination environments of the glass, and can be applied to the fields of folding screen cover plates, flexible display screen substrates, OLED lighting, ITO conductive glass substrates, flexible solar cells and the like. The flexible glass is directly drawn and formed by an overflow down-draw method, a slit down-draw method, a float method or a secondary drawing method and the like, and continuous production can be realized. The drawn glass can be rolled up like a plastic film, and roll-to-roll production can be realized.
With the progress of science and technology, various large Glass production factories at home and abroad are making efforts to develop Flexible Ultra-thin Glass (UTG Glass). The thickness of the flexible ultrathin glass is further reduced on the basis of the flexible glass, and the flexible ultrathin glass refers to glass with the thickness not exceeding 200 mu m. Flexible ultra-thin glass also has the advantages of glass in terms of hardness, transparency, heat resistance, electrical insulation, gas impermeability, and stable mechanical and chemical properties in oxidizing and light environments, but it is more fragile. Therefore, when the flexible ultrathin glass is prepared, the drawn flexible ultrathin glass is often required to be tempered, however, the traditional tempering process of the flexible ultrathin glass easily causes the defects of glass breakage, marking, surface deformation and the like, and the production yield is low.
Disclosure of Invention
In view of the above, there is a need for a supporting device capable of improving the yield of tempering flexible ultra-thin glass.
In addition, it is necessary to provide a tempering treatment method capable of improving the tempering yield of the flexible ultra-thin glass.
A supporting device comprises a frame body, a support and a concave-convex piece, wherein the support comprises an auxiliary unit and a support piece, the auxiliary unit is positioned in the frame body and fixed on the frame body, the support piece is positioned in the frame body and fixed on the frame body, and the auxiliary unit and the support piece together form an accommodating space capable of accommodating glass to be tempered; one side of the supporting piece close to the accommodating space and one side of the auxiliary unit close to the accommodating space are both provided with the concave-convex pieces so as to reduce the contact area of the supporting device and the glass to be tempered.
The supporting device comprises a frame body, a support and a concave-convex piece, wherein the support is fixed on the frame body, and the concave-convex piece is fixed on the support. Above-mentioned strutting arrangement reduces the area of contact of treating toughened glass and strutting arrangement through set up unsmooth piece on the support for adopt above-mentioned strutting arrangement to carry out tempering to flexible ultra-thin glass and the flexible ultra-thin toughened glass who obtains, be difficult to appear impression and surface deformation, improved flexible ultra-thin glass's tempering yield.
In one embodiment, the supporting part is a plurality of supporting parts, the supporting parts are arranged at intervals, and the supporting parts and the auxiliary unit form the accommodating space together;
and/or the concave-convex piece comprises a concave-convex part which is used for contacting the glass to be tempered, and the concave-convex part is wavy or zigzag.
In one embodiment, the distance between the wave troughs of the concave-convex parts is 4.5 mm-5.5 mm;
and/or the height of the concave-convex part is 3.5 mm-4.5 mm; the included angle between the connecting line of the wave trough of the concave-convex part and the wave crest of the concave-convex part and the plane where the wave trough of the concave-convex part is located is 35-55 degrees.
In one embodiment, the concave-convex part is a metal part, and the metal part is wavy and fixed on the bracket.
In one embodiment, the frame body has a bottom top surface and a bottom surface opposite to the top surface, the supporting member is in a strip shape, and the supporting member is close to the bottom surface; the auxiliary unit comprises two auxiliary pieces arranged at intervals, the auxiliary pieces comprise at least two cross-connected blocking pieces, the surfaces of all the blocking pieces, close to the glass to be tempered, are coplanar, the two auxiliary pieces and the supporting piece jointly form the accommodating space, and the concave-convex pieces are arranged on one side of each blocking piece, close to the accommodating space, and one side of each supporting piece, close to the top surface.
In one embodiment, the bracket further comprises a fixing piece, the auxiliary unit is fixed on the frame body through the fixing piece, the fixing piece is in a strip shape, and the length direction of the fixing piece is the same as that of the supporting piece; the fixing piece comprises a top fixing piece and a bottom fixing piece spaced from the top fixing piece, the top fixing piece is close to the top surface, the bottom fixing piece is close to the bottom surface, the blocking piece is strip-shaped, one end of the blocking piece is fixedly connected with the bottom fixing piece, and the other end of the blocking piece is fixedly connected with the top fixing piece.
In one embodiment, the interval between two auxiliary members in the same auxiliary unit is 8-12 mm.
In one embodiment, the auxiliary unit is a plurality of units, and the auxiliary unit and the support member are crisscrossed to form a plurality of accommodating spaces.
A toughening treatment method of flexible ultrathin glass comprises the following steps:
the method comprises the following steps that the flexible ultrathin glass to be tempered is placed in a supporting device and then is tempered, the supporting device comprises a frame body, a support and a concave-convex piece, the support comprises an auxiliary unit and a supporting piece, the auxiliary unit is located in the frame body and fixed on the frame body, the supporting piece is located in the frame body and fixed on the frame body, and the auxiliary unit and the supporting piece jointly form an accommodating space capable of accommodating the glass to be tempered; one side of the supporting piece close to the accommodating space and one side of the auxiliary unit close to the accommodating space are both provided with the concave-convex pieces so as to reduce the contact area of the supporting device and the glass to be tempered.
In one embodiment, before the flexible ultrathin glass to be tempered is placed in the supporting device, the method further comprises the step of performing acid treatment on the flexible ultrathin glass to be tempered, wherein the step of performing acid treatment comprises the following steps:
placing the flexible ultrathin glass to be tempered in an acid solution for etching for 10-60 s, wherein the acid solution comprises water, a sulfuric acid solution with the mass percentage of 95-98% and a hydrofluoric acid solution with the mass percentage of not less than 40%, and the volume ratio of the sulfuric acid solution to the hydrofluoric acid solution to the water is (3-7): (8-12): (81-89).
In one embodiment, the tempering process includes: sequentially preheating, toughening and annealing the flexible ultrathin glass to be toughened;
the preheating comprises a first section preheating, a second section preheating and a third section preheating in sequence, wherein the first section preheating parameters are as follows: heating to 135-165 ℃ from normal temperature; the parameters of the second stage preheating are as follows: heating from 135-165 ℃ to 225-255 ℃; the parameters of the third stage preheating are as follows: heating from 225-255 ℃ to 365-395 ℃, and then preserving heat for 25-35 min;
the toughening temperature is 365-405 ℃, the toughening time is 10-30 min, and the salt dripping time in the toughening process is 5-12 min;
the annealing comprises the steps of sequentially carrying out first-section slow cooling, second-section slow cooling, third-section slow cooling and fourth-section slow cooling, wherein the parameters of the first-section slow cooling are as follows: cooling from the toughening temperature to 315-335 ℃ within 45-75 min; the parameters of the second-stage slow cooling are as follows: cooling from 315-335 ℃ to 185-215 ℃ within 90-135 min; the parameters of the third-stage slow cooling are as follows: cooling from 185-215 ℃ to 85-115 ℃ within 85-115 min; the fourth stage slow cooling parameter is as follows: the temperature is reduced from 85 to 115 ℃ to 25 to 50 ℃ within 105 to 135 min.
The flexible ultrathin toughened glass is prepared by the toughening treatment method of the flexible ultrathin glass.
Drawings
FIG. 1 is a perspective view of a support device according to one embodiment;
FIG. 2 is a side view of the support device shown in FIG. 1 without glass to be strengthened positioned;
FIG. 3 is a top view of the support device shown in FIG. 1;
FIG. 4 is an enlarged view of section A of the support device shown in FIG. 2;
fig. 5 is an enlarged view of a portion B of the supporting device shown in fig. 2.
Reference numerals:
10. a support device; 110. a frame body; 130. a male and female member; 121. an auxiliary unit; 122. a support member; 111. a bottom surface; 112. a top surface; 123. an auxiliary member; 124. a stopper; 125. a fixing member; 126. a top fastener; 127. a bottom firmware; 20. and (5) tempering the glass.
Detailed Description
The present invention will now be described more fully hereinafter for purposes of facilitating an understanding thereof, and may be embodied in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; in addition, when not particularly specified, the manner of fixing is not particularly limited. For example, the fastening device may be detachably fastened by screwing, clipping, or the like, or may be non-detachably fastened by bonding, welding, riveting, or the like. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. When the terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," "bottom," and the like are used to indicate an orientation or positional relationship, it is for convenience of description only based on the orientation or positional relationship shown in the drawings, and it is not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Ordinary temperature herein means 26 ℃.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 3, an embodiment of the present application provides a supporting device 10, where the supporting device 10 includes a frame 110, a bracket and a concave-convex member 130, the bracket includes an auxiliary unit 121 and a supporting member 122, the auxiliary unit 121 is located in the frame 110 and fixed on the frame 110, the supporting member 122 is located in the frame 110 and fixed on the frame 110, the auxiliary unit 121 and the supporting member 122 form an accommodating space capable of accommodating a glass 20 to be tempered, and both a side of the supporting member 122 close to the accommodating space and a side of the auxiliary unit 121 close to the accommodating space are provided with the concave-convex member 130, so as to reduce a contact area between the supporting device 10 and the glass 20 to be tempered. Above-mentioned strutting arrangement 10 reduces the area of direct contact who treats toughened glass 20 and strutting arrangement 10 through set up unsmooth piece 130 on the support for adopt above-mentioned strutting arrangement 10 to carry out flexible ultra-thin glass's tempering and the flexible ultra-thin toughened glass who obtains when handling, be difficult to appear impression and bad surface, improved flexible ultra-thin glass's tempering yield.
The frame 110 serves as a base for supporting the device 10. Specifically, the frame body 110 has a bottom surface 111 and a top surface 112 opposite to the bottom surface 111. In the illustrated embodiment, the frame 110 has a substantially hollow rectangular parallelepiped shape. It is understood that in other embodiments, the shape of the frame 110 is not limited to a rectangular parallelepiped shape, and may be other shapes, which may be adjusted according to specific requirements. In one embodiment, the frame 110 is a stainless steel frame 110. It is understood that the material of the frame 110 is not limited to stainless steel, but may be other materials suitable for the tempering process.
The bracket is used for supporting the glass 20 to be tempered. In some embodiments, the rack includes a plurality of spaced apart supports 122 and at least one auxiliary unit 121. In one embodiment, each of the supporting members 122 is in the shape of a strip and is close to the bottom surface 111. It is understood that the shape of the support 122 is not limited to a bar shape, but may be other shapes in other embodiments. Of course, the shape of the plurality of supports 122 may be completely different or partially the same. For example, a portion of the supporting members 122 are quadrangular prism-shaped, and another portion of the supporting members 122 are cylindrical. Also for example, the shape of the support members 122 may vary.
In some embodiments, the spacing between adjacent supports 122 is equal. That is, the plurality of supporting pieces 122 are disposed at equal intervals. Through the equidistant arrangement of the plurality of supporting pieces 122, the stress of the glass to be toughened 20 is relatively uniform, so that the glass to be toughened is not easy to deform in the toughening process. In one embodiment, the spacing between adjacent support members 122 is between 15mm and 25 mm. In an optionally specific example, the spacing between adjacent supports 122 is 18mm, 20mm, or 24 mm.
In one embodiment, the glass 20 to be tempered is rectangular sheet-shaped flexible ultrathin glass, and the length of the glass 20 to be tempered is 130mm to 150mm, and the width of the glass is 60mm to 80 mm. At this time, the number of the supporting members 122 is three, and the interval between the adjacent supporting members 122 is 18mm to 22 mm. The three supporting members 122 can support the flexible ultrathin glass and are not easy to deform, and if the number of the supporting members 122 is less than three, the flexible ultrathin glass is easy to deform in the toughening process. It is understood that in other embodiments, the number of the supporting members 122 is not limited to three, but may be any integer number greater than three; the spacing between adjacent support members 122 is not limited to the above, and may be adjusted according to the specific situation.
In the illustrated embodiment, the length direction of the support 122 is the same as the width direction of the frame 110. It is understood that in other embodiments, the length direction of the supporting member 122 may also be the same as the length direction of the frame body 110, or form an angle with the length direction of the frame body 110.
The auxiliary unit 121 is used to form a space for accommodating the glass 20 to be tempered in cooperation with the support 122 and to maintain the glass 20 to be tempered upright in the gravity direction. For flexible ultra-thin glass, due to its ultra-thin and flexible nature, the auxiliary unit 121 is provided in an effort to maintain its erection in the direction of gravity. Specifically, the auxiliary unit 121 is located in the frame 110 and fixed on the frame 110, the auxiliary unit 121 includes two auxiliary members 123 arranged at intervals, the auxiliary members 123 include at least two cross-connected stoppers 124, surfaces of all the stoppers 124 close to the accommodating space are coplanar, the two auxiliary members 123 and the support member 122 together form an accommodating space for accommodating a piece of glass 20 to be tempered, both sides of the two stoppers 124 close to the accommodating space are provided with concave-convex members 130, and one side of the support member 122 close to the top surface 112 is also provided with concave-convex members 130. In the illustrated embodiment, there are two stoppers, and the stopper 124 is a bar with a rectangular cross section. It is to be appreciated that in other embodiments, the shape of the flight 124 is not limited to the above, but may be other shapes. For example cylindrical. When the stoppers 124 are cylindrical, the sides of the two stoppers 124 adjacent to the accommodating space are coplanar.
In some embodiments, the number of the auxiliary units 121 is multiple, and the multiple auxiliary units 121 and the multiple supporting members 122 are crisscrossed to form multiple accommodating spaces. Referring to fig. 3, the auxiliary members 123 are criss-crossed with the supporting members 122. In the illustrated embodiment, the length direction of the auxiliary member 123 is perpendicular to the length direction of the supporting member 122. It is understood that in other embodiments, the length direction of the auxiliary member 123 and the length direction of the supporting member 122 may not be perpendicular, for example, other angles greater than 0 ° and less than 180 °.
In one embodiment, the concave-convex pieces 130 are arranged at the positions where the two stoppers 124 and the supporting bars are likely to contact with the glass 20 to be tempered. Through the concave-convex pieces 130 arranged at the positions, possibly contacted with the glass to be toughened 20, on the blocking piece 124 and the supporting piece 122, the area of the glass to be toughened 20 in direct contact with the supporting device 10 can be reduced, so that the glass subjected to the toughening process is not easy to generate marks and surface deformation, the yield is improved, and the waste of the concave-convex pieces 130 is avoided. In the illustrated embodiment, each of the supporting members 122 is provided with a concave-convex member 130 on a side thereof adjacent to the top surface 112, a length direction of the concave-convex member 130 is the same as a length direction of the supporting member 122, and a length of the concave-convex member 130 is substantially the same as a length of the supporting member 122. At this time, a concave-convex piece 130 is also provided on the supporting piece 122 which does not contact with the glass 20 to be tempered. It is understood that, in other embodiments, the concave-convex member 130 on each supporting member 122 may be a plurality of concave-convex members 130, and the plurality of concave-convex members 130 are spaced apart in the length direction of the supporting member 122. At this time, the concave-convex member 130 is only disposed at a position where it is possible to contact with the glass 20 to be tempered, that is, a space formed by the auxiliary member 123 and the supporting member 122 for accommodating the glass 20 to be tempered. The arrangement can reduce the material consumption of the concave-convex piece 130.
In the above embodiment, the plurality of supporting members 122 correspond to at least one auxiliary unit 121. That is, in the case where the number of the supporting pieces 122 is constant, the number of the auxiliary units 121 may be increased, thereby increasing the number of the receiving spaces. It is understood that in other embodiments, one supporting member 122 may form a receiving space for receiving one piece of glass 20 to be tempered corresponding to one auxiliary unit 121 (in this case, the glass 20 to be tempered is placed with the length direction of the glass 20 to be tempered being the same as the length direction of the supporting member 122). At this time, the receiving space is increased by adding the supporter 122 and the auxiliary unit 121 at the same time.
In some embodiments, the stand further includes a fixing member 125, and the auxiliary unit 121 is fixed to the frame body 110 by the fixing member 125. In one embodiment, the fixing member 125 is fixed to the frame 110. The fixing member 125 is in the shape of a strip, and the length direction of the fixing member 125 is the same as the length direction of the supporting member 122. The fastener 125 includes a top fastener 126 and a bottom fastener 127 spaced from the top fastener 126, the top fastener 126 being adjacent the top surface 112 and the bottom fastener 127 being adjacent the bottom surface 111. The two stoppers 124 of the auxiliary member 123 are each fixedly connected to the bottom fixing member 127 at one end and the top fixing member 126 at the other end. It is understood that in other embodiments, the shape of the fixing member 125 is not limited to a bar shape, but may be other shapes; the length direction of the fixing member 125 and the length direction of the supporting member 122 may be different, as long as the fixing member 123 can be used to fix the frame 110; of course, the top fixing member 126 and the bottom fixing member 127 may not be spaced apart, and may be adjusted according to actual requirements.
In some embodiments, the stand includes a plurality of auxiliary units 121 fixed to the frame body 110. In one embodiment, the plurality of auxiliary units 121 are provided independently of each other. Specifically, the auxiliary members 123 of the plurality of auxiliary units 121 are independent of each other, and there is no case where the auxiliary members 123 are shared. In another embodiment, a plurality of auxiliary members 123 are fixed to the frame 110 in parallel and at intervals, and two adjacent auxiliary members 123 constitute the auxiliary unit 121. For example, three auxiliary members 123 are spaced to form two auxiliary units 121, and in this case, the auxiliary member 123 located in the middle becomes a common auxiliary member 123 for the two auxiliary units 121.
Referring to fig. 4, in one embodiment, the interval (a in fig. 4) between two auxiliary members 123 in the same auxiliary unit 121 is 8mm to 12 mm. According to such an arrangement, the glass 20 to be tempered can be easily put into the space formed by the supporting member 122 and the auxiliary member 123, and the surface of the glass 20 to be tempered is not easily marked and deformed. In an alternative specific example, the spacing between two auxiliary members 123 within the same auxiliary unit 121 is 8mm, 9mm, 10mm or 11 mm. Further, the interval between the two auxiliary members 123 in the same auxiliary unit 121 is 9.5mm to 10.5 mm.
Referring to fig. 5, the concave-convex member 130 is disposed on the bracket for reducing the contact area between the glass 20 to be tempered and the supporting device 10. Further, when the glass 20 to be tempered is placed on the concave-convex member 130, the portion of the glass 20 to be tempered, which is in direct contact with the concave-convex member 130, is linear and/or dotted rather than one surface of the glass 20 to be tempered, thereby reducing the contact area between the glass 20 to be tempered and the supporting device 10.
In some embodiments, the relief 130 comprises reliefs for contacting the glass 20 to be tempered, which are wavy or jagged. In use, the glass 20 to be tempered is placed between or on the two peaks of the relief.
In one embodiment, the pitch between the valleys of the concavo-convex portions is 4.5mm to 5.5 mm. In an alternative specific example, the pitch between the valleys of the concavo-convex portion is 4.5mm, 4.8mm, 5mm, 5.2mm, or 5.5 mm. Further, the interval between the valleys of the concavo-convex part is 4.8mm to 5.2 mm. When the uneven portion is wavy, the pitch between the valleys of the uneven portion is a distance (L in fig. 5) between two adjacent valleys. It is understood that, when the concave-convex portion is serrated, the pitch between the valleys of the concave-convex portion refers to the distance between the adjacent two tips.
In one embodiment, the height of the concavo-convex part is 3.5mm to 4.5 mm. In an alternative specific example, the height of the concave-convex portion is 3.5mm, 3.8mm, 4mm, 4.2mm, or 4.5mm, and further, the height of the concave-convex portion is 3.8mm to 4.2 mm. When the uneven portion is wavy, the height of the uneven portion is a distance from a peak to a plane where a trough adjacent to the peak is located (H in fig. 5). It is understood that, when the concavo-convex portion is serrated, the height of the concavo-convex portion is the height of the serration (the distance from the tooth tip to the tooth root near the bearing 122).
In one embodiment, the angle (α in fig. 5) between the connecting line of the valley of the concave-convex part and the peak of the concave-convex part and the plane where the valley of the concave-convex part is located is 35 ° to 55 °. In an optional specific example, an angle between a connecting line of a trough of the concave-convex part and a peak of the concave-convex part and a plane where the trough of the concave-convex part is located is 35 °, 40 °, 45 °, 50 ° or 55 °. Furthermore, the angle between the connecting line of the wave trough of the concave-convex part and the wave crest of the concave-convex part and the plane where the wave trough of the concave-convex part is positioned is 40-50 degrees.
In one embodiment, the concave-convex parts are wavy, and the distance between wave troughs of the concave-convex parts is 4.5 mm-5.5 mm; the height of the concave-convex part is 3.5 mm-4.5 mm; the angle between the connecting line of the wave trough of the concave-convex part and the wave crest of the concave-convex part and the plane where the wave trough of the concave-convex part is positioned is 35-55 degrees. Furthermore, the concave-convex parts are wavy, and the space between wave troughs of the concave-convex parts is 4.8 mm-5.2 mm; the height of the concave-convex part is 3.8 mm-4.2 mm; the angle between the connecting line of the wave trough of the concave-convex part and the wave crest of the concave-convex part and the plane where the wave trough of the concave-convex part is positioned is 40-50 degrees.
In one embodiment, the male and female members 130 are metal cords that are wavy and are secured to the frame. In the illustrated embodiment, the crests of the wavy metal cord are oriented toward the plane of the top surface 112.
In addition, an embodiment of the application also provides a toughening treatment method of the flexible ultrathin glass, which comprises the step of placing the flexible ultrathin glass to be toughened on any one of the supporting devices and then carrying out toughening treatment.
Specifically, the toughening treatment comprises the steps of sequentially preheating, toughening and annealing the flexible ultrathin glass to be toughened. More specifically, the flexible ultrathin glass to be tempered is placed in a space formed by the auxiliary piece and the supporting piece of the supporting device, so that one side edge of the flexible ultrathin glass to be tempered is positioned on the concave-convex piece on the supporting piece, one side surface of the flexible ultrathin glass to be tempered is leaned against the concave-convex piece of one auxiliary piece, and then the flexible ultrathin glass to be tempered is placed in the tempering furnace. For example, glass to be tempered is placed as shown in fig. 1.
In the present embodiment, the preheating includes sequentially performing the first-stage preheating, the second-stage preheating, and the third-stage preheating. Specifically, the parameters of the first stage preheating are as follows: heating to 135-165 ℃ from normal temperature; the parameters of the second stage preheating are as follows: heating from 135-165 ℃ to 225-255 ℃; the parameters of the third stage preheating are as follows: heating from 225-255 ℃ to 365-395 ℃, and then preserving heat for 25-35 min. Further, the parameters of the first stage preheating are as follows: heating to 135-165 ℃ from normal temperature within 25-35 min; the parameters of the second stage preheating are as follows: heating to 225-255 ℃ within 55-65 min; the parameters of the third stage preheating are as follows: heating to 365-395 ℃ within 105-115 min, and keeping the temperature for 25-35 min. Further, the parameters of the first stage preheating are as follows: heating to 140-160 ℃ from normal temperature within 25-35 min; the parameters of the second stage preheating are as follows: heating to 230-250 ℃ within 55-65 min; the parameters of the third stage preheating are as follows: heating to 370-390 ℃ within 105-115 min, and keeping the temperature for 25-35 min. In one optionally specific example, the parameters of the first stage preheating are: heating to 150 deg.C from normal temperature within 30 min; the parameters of the second stage preheating are as follows: heating to 240 deg.C within 60 min; the parameters of the third stage preheating are as follows: heating to 380 deg.C within 110min, and keeping the temperature for 30 min.
In the embodiment, the tempering temperature is 365-395 ℃; the tempering time is 10min to 30 min; the salt dripping time in the toughening process is 8-12 min. Further, the tempering temperature is 370-390 ℃. In one optional specific example, the tempering temperature is 380 ℃; the tempering time is 20 min; the salt dripping time in the toughening process is 10 min.
In this embodiment, the annealing includes performing first-stage slow cooling, second-stage slow cooling, and third-stage slow cooling in this order. Specifically, the parameters of the slow cooling in the first section are as follows: cooling from the toughening temperature to 315-335 ℃ within 45-75 min; the parameters of the second-stage slow cooling are as follows: cooling to 185-215 ℃ within 90-135 min; the parameters of the third stage slow cooling are as follows: cooling from 185-215 ℃ to 85-115 ℃ within 80-115 min; the parameters of the fourth stage slow cooling are as follows: the temperature is reduced from 85 to 115 ℃ to 25 to 50 ℃ within 105 to 135 min. Further, the parameters of the slow cooling in the first section are as follows: the temperature is reduced from the toughening temperature to 320-330 ℃ within 50-70 min; the parameters of the second-stage slow cooling are as follows: cooling to 190-200 ℃ within 90-110 min; the parameters of the third stage slow cooling are as follows: cooling from 320-330 ℃ to 90-110 ℃ within 90-110 min; the parameters of the fourth stage slow cooling are as follows: the temperature is reduced from 90 to 110 ℃ to 30 to 45 ℃ within 110 to 130 min. Further, the parameters of the slow cooling in the first section are as follows: the temperature is reduced from the toughening temperature to 325 to 330 ℃ within 55 to 65 min; the parameters of the second-stage slow cooling are as follows: cooling to 195-200 ℃ within 95-100 min; the parameters of the second-stage slow cooling are as follows: cooling from 195-200 ℃ to 95-100 ℃ within 95-100 min; the parameters of the third stage slow cooling are as follows: cooling to 30-40 ℃ within 115-125 min. In an optional specific example, the parameters of the first stage slow cooling are as follows: cooling from the toughening temperature to 325 ℃ within 60 min; the parameters of the second-stage slow cooling are as follows: cooling to 200 deg.C within 100 min; the parameters of the third stage slow cooling are as follows: cooling to 100 deg.C within 100 min; the parameters of the third stage slow cooling are as follows: the temperature is reduced from 100 ℃ to 35 ℃ within 120 min.
Naturally, the preheating and the heat preservation are carried out in a preheating furnace; tempering is carried out in a tempering furnace; the salt dropping is carried out above the toughening furnace; annealing and slow cooling are carried out in an annealing furnace. At the end of annealing, the annealing temperature is below 50 ℃, and the glass is transferred out of the annealing furnace. And (5) when the glass is cooled to normal temperature, desalting and cleaning. Specifically, the desalting step comprises: namely, after the annealed flexible ultrathin glass is cooled to normal temperature, the annealed flexible ultrathin glass is put into clear water to be soaked for more than 30 min.
The stress value, the stress depth and the bending radius of the flexible ultrathin toughened glass obtained by the toughening treatment method of the flexible ultrathin glass are measured by using a toughened glass surface pressure instrument and a bending instrument, and the stress value 780 MPa-880 MPa, the stress layer depth 5 mu m-9 mu m and the limit breaking radius less than or equal to 1.5mm of the flexible ultrathin toughened glass are found.
In some embodiments, before the flexible ultrathin glass to be tempered is placed in the supporting device, the method further comprises the step of performing acid treatment on the flexible ultrathin glass to be tempered. Flexible ultra-thin glass to be tempered generally presents a number of non-uniform areas and surface microcracks which tend to cause a reduction in the strength of the glass and eventual breakage. Generally, the fracture starts from the surface micro-crack, the stress is concentrated at the tip of the micro-crack, and the micro-crack is used as the expansion power of the micro-crack, and the micro-crack is continuously expanded, and finally the glass is fractured. Acid treatment can reduce fine cracks and uneven areas on the flexible ultrathin glass to be tempered, and the strength of the flexible ultrathin glass to be tempered is improved, so that the flexible ultrathin glass to be tempered is not easy to break after tempering treatment, and the tempering yield is further improved.
Specifically, the step of acid treatment comprises: placing the flexible ultrathin glass to be tempered in an acid solution for etching for 10-60 s, wherein the acid solution comprises water, a sulfuric acid solution with the mass percentage content of 95-98% and a hydrofluoric acid solution with the mass concentration not lower than 40%, and the volume ratio of the sulfuric acid solution to the hydrofluoric acid solution to the water is (3-7): (8-12): (81-89). In an alternative specific example, the volume ratio of the sulfuric acid solution, the hydrofluoric acid solution and the water is 3: 8: 89. 5: 10: 85 or 7: 12: 81. further, the acid solution comprises water, a sulfuric acid solution with the mass percentage content of 95% -98% and a hydrofluoric acid solution with the mass concentration not lower than 40%, and the volume ratio of the sulfuric acid solution to the hydrofluoric acid solution to the water is (4-7): (8-12): (81-88). Furthermore, the acid solution comprises water, a sulfuric acid solution with the mass percentage content of 95-98% and a hydrofluoric acid solution with the mass concentration not lower than 40%, and the volume ratio of the sulfuric acid solution to the hydrofluoric acid solution to the water is (5-7): (9-12): (81-86).
Of course, after the acid treatment is finished, the method also comprises the step of cleaning the flexible ultrathin glass after the acid treatment by using water to remove the acid solution. Of course, after the step of washing the acid-treated flexible ultrathin glass with water, a step of removing water left by washing on the flexible ultrathin glass is further included.
In addition, the embodiment of the application also provides the flexible ultrathin tempered glass, and the flexible ultrathin tempered glass is prepared by the tempering treatment method of the flexible ultrathin tempered glass.
Specifically, the stress value of the flexible ultrathin toughened glass is 780 MPa-880 MPa, the depth of a stress layer is 5 mu m-9 mu m, and the limit crushing radius is less than or equal to 1.5 mm.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The following detailed description is given with reference to specific examples. The following examples are not specifically described, and other components except inevitable impurities are not included. Reagents and instruments used in the examples are all conventional in the art and are not specifically described. The experimental procedures, in which specific conditions are not indicated in the examples, were carried out according to conventional conditions, such as those described in the literature, in books, or as recommended by the manufacturer. The flexible glass to be tempered in the following examples and comparative examples is KK6 high-aluminum ultra-white glass manufactured by shinning south glass photoelectric glass limited, and the size thereof is as follows: the length is 100 mm-200 mm, the width is 40 mm-120 mm, and the thickness is 25 μm-100 μm.
Example 1
The method for preparing the flexible ultrathin tempered glass is mainly prepared by toughening the flexible glass to be tempered by adopting the supporting device shown in fig. 1, and comprises the following specific steps:
(1) acid treatment
a) Preparing a sulfuric acid solution (H)2SO4The mixed acid solution consists of 95-98 wt%, superior pure West Kronch science corporation, HF solution (the mass percent of HF is more than or equal to 40%, Guangdong Guanghua chemical plant Co., Ltd., analytically pure) and water (deionized water). Wherein, in the mixed acid solution, the volume ratio of the sulfuric acid solution to the hydrofluoric acid solution to the water is 5: 10: 85.
b) and (3) placing the flexible ultrathin glass to be tempered into a mixed acid solution, and etching at the temperature of 25 ℃ for 15 s.
c) And (4) cleaning the acid-treated ultrathin glass by using deionized water to remove surface water.
(2) Inserting the acid-treated flexible ultrathin glass into a toughening frame, then placing the glass into a toughening furnace, and carrying out preheating, toughening and annealing treatment according to the parameters in table 1, wherein the preheating adopts three-section preheating, the annealing also adopts three-section slow cooling, and the salt dripping time is 10 min.
(3) After the annealing is finished, the steel is cooled to 45 ℃ and then is moved out of the annealing furnace.
(4) And after the annealed flexible ultrathin glass is cooled to 25 ℃, putting the annealed flexible ultrathin glass into clear water, and soaking for 40 min. And then washing with clear water, and drying to prepare the flexible ultrathin toughened glass.
(2) The stress value, the stress layer depth and the ultimate breaking radius of the flexible ultra-thin tempered glass of this example were measured using a tempered glass surface pressure gauge and a bending gauge, and the results are shown in table 1.
Example 2
The method for manufacturing the flexible ultrathin tempered glass in this embodiment is substantially the same as that in embodiment 1, except that the parameters for manufacturing are different, and the parameters in the method for manufacturing the flexible ultrathin tempered glass in this embodiment are detailed in table 1. The performance test results of the flexible ultrathin toughened glass prepared by the preparation method of the flexible ultrathin toughened glass are detailed in table 1.
Example 3
The method for manufacturing the flexible ultrathin tempered glass in this embodiment is substantially the same as that in embodiment 1, but different in manufacturing parameters, and the parameters in the method for manufacturing the flexible ultrathin tempered glass in this embodiment are detailed in table 1. The performance test results of the flexible ultrathin toughened glass prepared by the preparation method of the flexible ultrathin toughened glass are detailed in table 1.
Example 4
The method for manufacturing the flexible ultrathin tempered glass in this embodiment is substantially the same as that in embodiment 1, but different in manufacturing parameters, and the parameters in the method for manufacturing the flexible ultrathin tempered glass in this embodiment are detailed in table 1. The performance test results of the flexible ultrathin toughened glass prepared by the preparation method of the flexible ultrathin toughened glass are detailed in table 1.
Example 5
The method for manufacturing the flexible ultrathin tempered glass in this embodiment is substantially the same as that in embodiment 1, but different in manufacturing parameters, and the parameters in the method for manufacturing the flexible ultrathin tempered glass in this embodiment are detailed in table 1. The performance test results of the flexible ultrathin toughened glass prepared by the preparation method of the flexible ultrathin toughened glass are detailed in table 1.
Example 6
The method for manufacturing the flexible ultrathin tempered glass in this embodiment is substantially the same as that in embodiment 1, but different in manufacturing parameters, and the parameters in the method for manufacturing the flexible ultrathin tempered glass in this embodiment are detailed in table 1. The performance test results of the flexible ultrathin toughened glass prepared by the preparation method of the flexible ultrathin toughened glass are detailed in table 1.
Example 7
The method for manufacturing the flexible ultrathin tempered glass in this embodiment is substantially the same as that in embodiment 1, but different in manufacturing parameters, and the parameters in the method for manufacturing the flexible ultrathin tempered glass in this embodiment are detailed in table 1. The performance test results of the flexible ultrathin toughened glass prepared by the preparation method of the flexible ultrathin toughened glass are detailed in table 1.
TABLE 1
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, so as to understand the technical solutions of the present invention specifically and in detail, but not to be understood as the limitation of the protection scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. It should be understood that the technical solutions obtained by logical analysis, reasoning or limited experiments based on the technical solutions provided by the present invention are all within the protection scope of the appended claims of the present invention. Therefore, the protection scope of the present invention should be subject to the content of the appended claims, and the description and the drawings can be used for explaining the content of the claims.
Claims (12)
1. The supporting device is characterized by comprising a frame body, a support and a concave-convex piece, wherein the support comprises an auxiliary unit and a support piece, the auxiliary unit is positioned in the frame body and fixed on the frame body, the support piece is positioned in the frame body and fixed on the frame body, and the auxiliary unit and the support piece together form an accommodating space capable of accommodating glass to be tempered; one side of the supporting piece close to the accommodating space and one side of the auxiliary unit close to the accommodating space are both provided with the concave-convex pieces so as to reduce the contact area of the supporting device and the glass to be tempered.
2. The supporting device according to claim 1, wherein the supporting member is a plurality of supporting members, the plurality of supporting members are arranged at intervals, and the plurality of supporting members and the auxiliary unit together form the accommodating space;
and/or the concave-convex piece comprises a concave-convex part which is used for contacting the glass to be tempered, and the concave-convex part is wavy or zigzag.
3. The supporting device as claimed in claim 2, wherein the intervals between the valleys of the concavo-convex part are 4.5mm to 5.5 mm;
and/or the height of the concave-convex part is 3.5 mm-4.5 mm; the included angle between the connecting line of the wave trough of the concave-convex part and the wave crest of the concave-convex part and the plane where the wave trough of the concave-convex part is located is 35-55 degrees.
4. The support device as claimed in claim 1, wherein the male and female members are metallic members, and the metallic members are waved and fixed to the bracket.
5. The supporting device according to any one of claims 1 to 4, wherein the frame body has a bottom top surface and a bottom surface opposite to the top surface, the supporting member is strip-shaped, and the supporting member is close to the bottom surface; the auxiliary unit comprises two auxiliary pieces arranged at intervals, the auxiliary pieces comprise at least two cross-connected blocking pieces, the surfaces of all the blocking pieces, close to the glass to be tempered, are coplanar, the two auxiliary pieces and the supporting piece jointly form the accommodating space, and the concave-convex pieces are arranged on one side of each blocking piece, close to the accommodating space, and one side of each supporting piece, close to the top surface.
6. The supporting device as claimed in claim 5, wherein the bracket further comprises a fixing member, the auxiliary unit is fixed on the frame body through the fixing member, the fixing member is strip-shaped, and the length direction of the fixing member is the same as the length direction of the supporting member; the fixing piece comprises a top fixing piece and a bottom fixing piece spaced from the top fixing piece, the top fixing piece is close to the top surface, the bottom fixing piece is close to the bottom surface, the blocking piece is strip-shaped, one end of the blocking piece is fixedly connected with the bottom fixing piece, and the other end of the blocking piece is fixedly connected with the top fixing piece.
7. Support means according to claim 5 wherein the spacing between two said auxiliary members within the same auxiliary unit is between 8mm and 12 mm.
8. The supporting device as claimed in any one of claims 1 to 4 and 6 to 7, wherein the number of the auxiliary units is plural, and the auxiliary units and the supporting member are crisscrossed to form a plurality of accommodating spaces.
9. The toughening treatment method of the flexible ultrathin glass is characterized by comprising the following steps of:
the method comprises the following steps that the flexible ultrathin glass to be tempered is placed in a supporting device and then is tempered, the supporting device comprises a frame body, a support and a concave-convex piece, the support comprises an auxiliary unit and a supporting piece, the auxiliary unit is located in the frame body and fixed on the frame body, the supporting piece is located in the frame body and fixed on the frame body, and the auxiliary unit and the supporting piece jointly form an accommodating space capable of accommodating the glass to be tempered; one side of the supporting piece close to the accommodating space and one side of the auxiliary unit close to the accommodating space are both provided with the concave-convex pieces so as to reduce the contact area of the supporting device and the glass to be tempered.
10. The tempering treatment method according to claim 9, further comprising a step of subjecting the flexible ultra-thin glass to be tempered to an acid treatment before placing the flexible ultra-thin glass to be tempered in the supporting device, the acid treatment step comprising:
placing the flexible ultrathin glass to be tempered in an acid solution for etching for 10-60 s, wherein the acid solution comprises water, a sulfuric acid solution with the mass percentage of 95-98% and a hydrofluoric acid solution with the mass percentage of not less than 40%, and the volume ratio of the sulfuric acid solution to the hydrofluoric acid solution to the water is (3-7): (8-12): (81-89).
11. The tempering treatment method according to claim 9 or 10, wherein said tempering treatment step comprises: sequentially preheating, toughening and annealing the flexible ultrathin glass to be toughened;
the preheating comprises a first section preheating, a second section preheating and a third section preheating in sequence, wherein the first section preheating parameters are as follows: heating to 135-165 ℃ from normal temperature; the parameters of the second stage preheating are as follows: heating from 135-165 ℃ to 225-255 ℃; the parameters of the third stage preheating are as follows: heating from 225-255 ℃ to 365-395 ℃, and then preserving heat for 25-35 min;
the toughening temperature is 365-405 ℃, the toughening time is 10-30 min, and the salt dripping time in the toughening process is 5-12 min;
the annealing comprises the steps of sequentially carrying out first-section slow cooling, second-section slow cooling, third-section slow cooling and fourth-section slow cooling, wherein the parameters of the first-section slow cooling are as follows: cooling from the toughening temperature to 315-335 ℃ within 45-75 min; the parameters of the second-stage slow cooling are as follows: cooling from 315-335 ℃ to 185-215 ℃ within 90-135 min; the parameters of the third-stage slow cooling are as follows: cooling from 185-215 ℃ to 85-115 ℃ within 85-115 min; the fourth stage slow cooling parameter is as follows: the temperature is reduced from 85 to 115 ℃ to 25 to 50 ℃ within 105 to 135 min.
12. A flexible ultrathin tempered glass is characterized by being prepared by the tempering treatment method of the flexible ultrathin glass according to any one of claims 9 to 11.
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| CN113582553A (en) * | 2021-08-11 | 2021-11-02 | 芜湖长信科技股份有限公司 | Processing technology of ultrathin glass cover plate |
| CN216711914U (en) * | 2021-11-23 | 2022-06-10 | 清远南玻节能新材料有限公司 | Supporting device |
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| WO2016037343A1 (en) * | 2014-09-12 | 2016-03-17 | Schott Glass Technologies (Suzhou) Co. Ltd. | Ultrathin chemically toughened glass article and method for producing such a glass article |
| CN113480156A (en) * | 2021-07-02 | 2021-10-08 | 维达力实业（赤壁）有限公司 | Ultra-thin glass tempering device |
| CN113582553A (en) * | 2021-08-11 | 2021-11-02 | 芜湖长信科技股份有限公司 | Processing technology of ultrathin glass cover plate |
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