CN102896840A - Toughened glass anti-glare panel and manufacturing method thereof - Google Patents
Toughened glass anti-glare panel and manufacturing method thereof Download PDFInfo
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- CN102896840A CN102896840A CN2012104435855A CN201210443585A CN102896840A CN 102896840 A CN102896840 A CN 102896840A CN 2012104435855 A CN2012104435855 A CN 2012104435855A CN 201210443585 A CN201210443585 A CN 201210443585A CN 102896840 A CN102896840 A CN 102896840A
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Abstract
The invention discloses a toughened glass anti-glare panel and a manufacturing method thereof, which belong to the field of a roadanti-glare technology. The toughened glass anti-glare panel comprises a panel body and is characterized in that the panel plate is formed by at least two toughened glass boards which are stuck together; and a glue layer is arranged between the toughened glass boards. The bearing capability of the toughened glass boards in the anti-glare panel is strong, and the toughened glass boards can bear the rapid temperature change within 200 DEG C in a severe environment and has a good mechanical property and thermal shock resistance; when glass bears external force larger than the surface stress of the glass to be broken, fragments are crushed into a plurality of fine obtuse-angle grains, so that the glass is named as safety glass; and as the glass does not contain toxic elements including lead, chromium and the like and can be recycled, the toughened glass anti-glare panel meets the popular requirements on low carbon and environment friendliness. A glue layer further improves the section anti-bending inertia moment of the toughened glass anti-glare panel and can be used for sticking the crushed fine obtuse-angle grains, so that the accident of stabbing people by the glass fragments can be effectively prevented.
Description
Technical field
The invention belongs to road glare reduction techniques field, be specifically related to a kind of antiglare shield and production technology thereof.
Background technology
Fast development along with the highway in China traffic, especially in the larger highway section of night traffic amount as glare screen is not set, the vehicle of fast running is easy to make Driver Vision function or eyesight to reduce under the impact of opposed vehicle dazzle, produce fidgety sense and discomfort, accident causes serious harm to vehicle and occupant easily.Therefore, the setting of glare screen seems very important.
At present, most of resin glass steel antiglare shield or the iron and steel skin antiglare shield of adopting of antiglare shield.Wherein iron and steel skin antiglare shield is made by steel plate and other synthetic material of adhering to outward, because the thermal coefficient of expansion of steel plate is high, be subject to for a long time acid rain, be exposed to the sun, impact and the easily vibration of its bottom under the effect of wind-force of the weather conditions such as sleet, attachment can produce slight crack even peel off, increase the weight of steel plate corrosion, the iron oxide contaminated environment that corrosion forms, even affect health.And because the corrosion of iron and steel skin antiglare shield damages, need to repeat maintain and replace, make cost wayward.
The material of resin glass steel antiglare shield is mainly fiberglass, and fiberglass is to be solidified by glass fibre, epoxy resin and ethylenediamine to make, and the hard degradation of product own very easily causes secondary pollution to environment.And can not resisting ultraviolet irradiation, produce easily microgroove and cause degradation with aging on its surface; At wind and snow, be exposed to the sun, also can't resist under the natural climate such as acid rain and corrode and destroy, the phenomenons such as aging, cracking, variable color very easily appear, need often to change, cause its maintenance cost high.Although engineering plastics are in continuous progress, the problems referred to above still can not fundamentally be resolved.
It is reported, when the president Yao Ming of China road transport association moral is participated in the meeting of national road transportation industry association working to the Nanning, introduced the current condition of China expressway: this year, also will newly to reconstruct highway mileage be 340,000 kilometers in the whole nation, and wherein highway is 4460 kilometers.To the end of this year, the national highway total kilometrage that is open to traffic reaches 3,480,000 kilometers, and highway reaches 4.54 ten thousand kilometers.In prediction on such basis, if antiglare shield adopts the resin glass steel to do, will produce the non-degradable material and reach 600 kilograms/kilometer.Having caused serious pollution and even the whole earth to environment all is extinction; If antiglare shield adopts the iron and steel leather to do, and is iron oxide because its erosion that can not resist natural climate can produce the non-degradable thing and be etched the iron rust that peels off, it is the most direct also to be that maximum harm is exactly the infringement to human liver.And also number is surprising for the regular maintenance cost that iron and steel skin antiglare shield produces, and can reach 17000 yuan/kilometer.
As seen, invent a low-carbon environment-friendly, long-lived antiglare shield is extremely urgent.
Summary of the invention
Technical problem to be solved by this invention provides a kind of safety glass antiglare shield, can improve safety, environmental protection and the performance durable in use of antiglare shield.
For solving the problems of the technologies described above, technical scheme of the present invention is: design a kind of safety glass antiglare shield, comprise plate body, it is characterized in that: described plate body is fitted by at least two armorplate glasses and is formed, and glue-line is set between the armorplate glass.
Preferably, described glue-line is silica gel.
Preferably, the surface of armorplate glass arranges the anti-dazzle lattice of vertical striated, the outline line indention of anti-dazzle lattice cross section.
Preferably, the interplanar angle in the striped inclined-plane of anti-dazzle lattice and armorplate glass main body place is 10～20 °.
Preferably, the height of described safety glass antiglare shield is 40～180 ㎝, and width is 20～95 ㎝; The thickness of armorplate glass is 3～8 ㎜, and the thickness of glue-line is 1～2 ㎜.
Preferably, the outer surface of armorplate glass that is positioned at the outside arranges frosted layer.
Preferably, be positioned at the surface of inboard armorplate glass and be printed with silicate printing ink or/and be positioned at the inner surface of the armorplate glass in the outside.
The present invention also provides a kind of manufacture craft of safety glass antiglare shield, may further comprise the steps successively:
⑴ by alloy roller rolled glass melt, and calendering is made the surface with the glass plate of anti-dazzle lattice, and the heat resisting temperature of alloy roller is more than 800 ℃ and the spot corrosion index is more than 35;
⑵ carry out frosting to glass plate processes, and makes the outer surface of the glass plate that is positioned at the outside form frosted layer;
⑶ to the surface that is positioned at inboard armorplate glass or/and be positioned at the inner surface of the armorplate glass in the outside, finish the glass plate colouring with the silicate ink printing;
⑷ the glass plate after the colouring dries, and then carries out tempering, makes armorplate glass;
⑸ the armorplate glass that place by inside and outside sequential cascade more than two and the silica gel of being located between the armorplate glass place electric heater unit, make armorplate glass and silica gel hot pressing together.
Preferably, the temperature of drying among the step ⑷ is 100～250 ℃, and the time of drying is 6～24 hours, and the tempering temperature is 550～850 ℃;
The heating-up temperature of step ⑸ is 180～260 ℃, will vacuumize between the armorplate glass.
Preferably, on the surface of alloy roller along " V " type that circumferentially the is distributed with groove of roll body, the outline line indention of anti-dazzle lattice cross section.
Compared with prior art, the invention has the beneficial effects as follows:
1, because plate body is by the stacked armorplate glass that bonds together of glue-line more than two, safety glass is that simple glass is through the formed a kind of glass with compression of tempering, tempering is processed the bearing capacity that has improved glass self, and can bear the rapidly difference variation of 200 ℃ of scopes of adverse circumstances, have good mechanical performance and resistance to thermal shock performance; When glass bears external force when damaged greater than skin stress, fragment can form countless tiny obtuse angle particles, a kind of safety glass of being known as; And the poisonous elements such as glass self is not leaded, chromium, the recyclable recycling of resource meets the requirement of the low-carbon environment-friendly of advocating at present.Glue-line the further cross section bending resistance moments of inertia that has improved the safety glass antiglare shield is set, and can adhere to the tiny obtuse angle particle after the firmly fragmentation, prevented that effectively fragment from stabbing the generation of event, thereby improved safety, environmental protection and the performance durable in use of antiglare shield.
2, because silica gel take ultraviolet ray as volatile medium, is subjected to sun time of being exposed to the sun longer, and firmness is higher, have long advantage of stronger resisting ultraviolet irradiation, uprising solarization and life-span, further prolonged the service life of antiglare shield.The honeycomb core structures of silica gel can also produce cushioning effect to the sound wave resonance of sound, and certain reduction noise result is played in the sound insulation of expressway.And be the high tough silica gel of a kind of bonding force, antiglare shield is hit damaged rear difficult being run through.
3, because the surface of armorplate glass arranges the anti-dazzle lattice of vertical striated, the outline line indention of anti-dazzle lattice cross section, the interplanar angle in the striped inclined-plane of anti-dazzle lattice and armorplate glass main body place is 10～20 °, though from a distant place or in-plant incident high light vertical or that tilt get to and all can make reverberation press close to the safety glass surface on this kind antiglare shield to transmit, the incident high light is disperseed, thus the antiglare effect of generation better quality.
4, because the frosted layer that the surface of armorplate glass arranges can absorb the incident light more than 60%, reduced the emissive porwer of light, and be densely covered with rough frosting particle in the frosted layer, incident light is carried out the dispersiveness reflection of different angles, further reduced the dazzling effect of light.
5, with the silicate ink printing to the surface that is positioned at inboard armorplate glass or/and be positioned at the inner surface of the armorplate glass in the outside, then glass plate is dried and gives tempering, it is true to nature to reach color and luster, adhesion-tight, lasting effect, and further reduced the optical transmission degree, strengthened the anti-dazzle function of antiglare shield.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cross section view of Fig. 1;
Fig. 3 is the zoomed-in view of local I among Fig. 2.
Mark among the figure: 1, anti-dazzle lattice; 2, armorplate glass; 3, glue-line; 4, installing hole; 5, frosted layer;
6, silicate printing ink.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the present invention is described in further detail.
The present invention is defined as the short transverse of antiglare shield when using state vertically, accordingly its width is defined as laterally; Outside simultaneously antiglare shield being defined as with extraneous contact side, correspondingly will be defined as the inboard near a side at its center when using state.
Embodiment one
Such as Fig. 1, Fig. 2 and shown in Figure 3, the armorplate glass 2 that plate body of the present invention is 5 ㎜ by two thickness is fitted and is formed, sandwiched thickness is the glue-line 3 of 1.5 ㎜ between two armorplate glasses 2, safety glass is that simple glass is through the formed a kind of glass with compression of tempering, tempering is processed the bearing capacity that has improved glass self, and can bear the rapidly difference variation of 200 ℃ of scopes of adverse circumstances, have good mechanical performance and resistance to thermal shock performance; When glass bears external force when damaged greater than skin stress, fragment can form countless tiny obtuse angle particles, a kind of safety glass of being known as; And the poisonous elements such as glass self is not leaded, chromium, the recyclable recycling of resource meets the requirement of the low-carbon environment-friendly of advocating at present.Glue-line 3 the further cross section bending resistance moments of inertia that has improved the safety glass antiglare shield is set, and can adhere to the tiny obtuse angle particle after the firmly fragmentation, prevented that effectively fragment from stabbing the generation of event, thereby improved safety, environmental protection and the performance durable in use of antiglare shield.
Above-mentioned glue-line 3 is selected silica gel, because silica gel is take ultraviolet ray as volatile medium, is subjected to sun time of being exposed to the sun longer, and firmness is higher, has further prolonged the service life of antiglare shield.The honeycomb core structures of silica gel can also produce cushioning effect to the sound wave resonance of sound, has reduced the noise on the expressway.And be the high tough silica gel of a kind of bonding force, antiglare shield is hit damaged rear difficult being run through, further improved the security performance of antiglare shield.
The anti-dazzle lattice 1 of vertical striated are set on the surface of armorplate glass 2, the outline line indention of anti-dazzle lattice 1 cross section, the interplanar angle in the striped inclined-plane of anti-dazzle lattice 1 and armorplate glass 2 main body places is 15 °, though from a distant place or in-plant incident high light vertical or that tilt get to and all can make reverberation press close to the safety glass surface on this kind antiglare shield to transmit, the incident high light is disperseed, thereby produced the antiglare effect of better quality.The outer surface that is positioned at the armorplate glass 2 in the outside arranges frosted layer 5, can absorb the incident light more than 60%, reduce the emissive porwer of light, and be densely covered with rough frosting particle in the frosted layer 5, incident light is carried out the dispersiveness reflection of different angles, reduced the dazzling effect of light.The surface that every armorplate glass 2 is pressed close to glue-line 3 all is printed with silicate printing ink 6, has further reduced the optical transmission degree, has strengthened the anti-dazzle function of antiglare shield.
In order to realize the combination of antiglare effect and manufacturing cost, consider irradiation height and the base of principle of human engineering when the driving state of front lamp of vehicle, the height of antiglare shield and driver's height of sighting line are adapted, and the height of above-mentioned safety glass antiglare shield is that 40～180 ㎝, width are 20～95 ㎝; Its profile can adopt ecological tree-shaped, also can select other shapes such as cartoon.Set glue-line 3 also can be selected the glue class beyond the silica gel, can realize equally adhering to the tiny obtuse angle particle behind the toughened glass crushing, just sun-proof and do not have silica gel excellent every the aspect of performance of making an uproar.The bottom of antiglare shield offers installing hole 4, is convenient to on-the-spot the installation.The armorplate glass 2 that consists of antiglare shield also can be for more than two, can be printed with silicate printing ink 6 in the wherein a slice that is positioned at the inboard or the surface of above armorplate glass 2, also silicate printing ink 6 can be printed on the inner surface of the armorplate glass 2 that is positioned at the outside.
The harmful elements such as safety glass antiglare shield of the present invention is unleaded, chromium, have recyclable recycling, low-carbon environment-friendly, high, the stable high characteristic of safety coefficient, be its service life more than 30～40 years, greatly reduce the number of times of maintenance, improved simultaneously attendant's safety coefficient, be the first-selected product of highway environment engineering, make especially the green product of China low-carbon environment-friendly society.During use, on median barrier brace summer, column or the hard shoulder on highway or automobile specified road, settle a safety glass antiglare shield every 40～200 ㎝ spacings, the installing hole 4 of antiglare shield root is connected and fixed by mechanical connection manner and guardrail brace summer, column or hard shoulder.
Above-mentioned good characteristic of the present invention is obtained coml for it and has successfully been established solid foundation.
Manufacture craft of the present invention is as follows:
Adopt prior art that glass is made the molten state body, be more than 800 ℃ and the spot corrosion index is alloy roller rolled glass melt more than 35 by heat resisting temperature, on the surface of alloy roller along " V " type that circumferentially the is distributed with groove of roll body, calendering is made the surface with the glass plate of anti-dazzle lattice 1, the outline line indention of anti-dazzle lattice 1 cross section; Carry out again frosting and process, make the outer surface of glass plate form frosted layer 5; Silicate printing ink 6 is printed inner surface to glass plate, finish the glass plate colouring; Glass plate after the colouring dries, and drying temperature is 180 ℃, and the time of drying is 19 hours; Then carry out tempering, the tempering temperature is 760 ℃, makes armorplate glass 2; Two lamellas stack the armorplate glass 2 of putting and the silica gel of being located between the armorplate glass 2 places electric heater unit, the inner surface of armorplate glass 2 is pressed close to glue-line 3, the heating-up temperature of electric heater unit is 210 ℃, to be taken into vacuum environment between the armorplate glass 2 simultaneously, make armorplate glass 2 and silica gel hot pressing together, make vacuum technology and the effective combination of heating, reach without bubble, the high effect of seamless and bonding firmness.
Above-mentioned tempering is processed and can be adopted physics or chemical steel process in the prior art, as long as simple glass can be made safety glass, its process conditions be there is no specific (special) requirements.Frosting is processed can adopt technique of the prior art, as long as glass surface is made frosted layer, to what technique of concrete employing and no requirement (NR).
Above-mentioned manufacture craft is applicable to comprise the antiglare shield of three or above armorplate glass 2 too, when frosting is processed, makes the outer surface of the glass plate that is positioned at the outside form frosted layer 5; Silicate printing ink 6 is printed to the surface that is positioned at inboard armorplate glass 2 or/and be positioned at the inner surface of the armorplate glass 2 in the outside.The placement location of lamination order and silica gel is consistent with the finished product of wanting to make inside and outside the armorplate glass in electric heater unit.
Embodiment two
The difference of present embodiment and embodiment one is: in manufacture craft, drying temperature is 100 ℃, and the time of drying is 24 hours, and the tempering temperature is 550 ℃, and the heating-up temperature of electric heater unit is 180 ℃, and all the other are with embodiment one.
Embodiment three
The difference of present embodiment and embodiment one is: in manufacture craft, drying temperature is 260 ℃, and the time of drying is 6 hours, and the tempering temperature is 850 ℃, and the heating-up temperature of electric heater unit is 260 ℃, and all the other are with embodiment one.
Embodiment four
The difference of present embodiment and embodiment one is: the thickness of armorplate glass 2 is 3 ㎜, and the thickness of glue-line 3 is 1 ㎜, and the interplanar angle in the inclined-plane of anti-dazzle lattice 1 and armorplate glass 2 main body places is 10 °.In manufacture craft, drying temperature is 170 ℃, and the time of drying is 16 hours, and the tempering temperature is 750 ℃, and the heating-up temperature of electric heater unit is 200 ℃, and all the other are with embodiment one.
Embodiment five
The difference of present embodiment and embodiment four is: in manufacture craft, drying temperature is 100 ℃, and the time of drying is 24 hours, and the tempering temperature is 550 ℃, and the heating-up temperature of electric heater unit is 200 ℃, and all the other are with embodiment four.
Embodiment six
The difference of present embodiment and embodiment four is: in manufacture craft, drying temperature is 250 ℃, and the time of drying is 6 hours, and the tempering temperature is 850 ℃, and the heating-up temperature of electric heater unit is 260 ℃, and all the other are with embodiment four.
Embodiment seven
The difference of present embodiment and embodiment one is: the thickness of armorplate glass 2 is 8 ㎜, and the thickness of glue-line 3 is 2 ㎜, and the interplanar angle in the inclined-plane of anti-dazzle lattice 1 and armorplate glass 2 main body places is 20 °.In manufacture craft, drying temperature is 190 ℃, and the time of drying is 21 hours, and the tempering temperature is 780 ℃, and the heating-up temperature of electric heater unit is 220 ℃, and all the other are with embodiment one.
Embodiment eight
The difference of present embodiment and embodiment seven is: in manufacture craft, drying temperature is 100 ℃, and the time of drying is 24 hours, and the tempering temperature is 550 ℃, and the heating-up temperature of electric heater unit is 180 ℃, and all the other are with embodiment seven.
Embodiment nine
The difference of present embodiment and embodiment seven is: in manufacture craft, drying temperature is 250 ℃, and the time of drying is 6 hours, and the tempering temperature is 850 ℃, and the heating-up temperature of electric heater unit is 260 ℃, and all the other are with embodiment seven.
The performance parameter of the safety glass antiglare shield that the various embodiments described above are produced sees the following form:
 |
Resistance property (Kgm) | Bending strength (Pa) | Wind-Pressure Resistance (g/m) | Safety coefficient N | Corrosion-resistant degree PI |
| One | 2.4 | 1.3 | 240 | 6 | ＞39 |
| Two | 2.3 | 1.1 | 228 | 5 | ＞39 |
| Three | 2.35 | 1.2 | 237 | 5.5 | ＞39 |
| Four | 2.28 | 1.2 | 228 | 6.2 | ＞38 |
| Five | 2.1 | 1.03 | 205 | 5.5 | ＞38 |
| Six | 1.9 | 1.12 | 225 | 5.9 | ＞38 |
| Seven | 2.45 | 1.4 | 251 | 7 | ＞40 |
| Eight | 2.35 | 1.25 | 243 | 6 | ＞40 |
| Nine | 2.4 | 1.3 | 249 | 6.5 | ＞40 |
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (10)
1. a safety glass antiglare shield comprises plate body, it is characterized in that: described plate body is fitted by at least two armorplate glasses and is formed, and glue-line is set between the armorplate glass.
2. according to safety glass antiglare shield claimed in claim 1, it is characterized in that: described glue-line is silica gel.
3. according to safety glass antiglare shield claimed in claim 1, it is characterized in that: the surface of armorplate glass arranges the anti-dazzle lattice of vertical striated, the outline line indention of anti-dazzle lattice cross section.
4. according to safety glass antiglare shield claimed in claim 3, it is characterized in that: the interplanar angle in the striped inclined-plane of anti-dazzle lattice and armorplate glass main body place is 10～20 °.
5. according to safety glass antiglare shield claimed in claim 1, it is characterized in that: the height of described safety glass antiglare shield is 40～180 ㎝, and width is 20～95 ㎝; The thickness of armorplate glass is 3～8 ㎜, and the thickness of glue-line is 1～2 ㎜.
6. according to the arbitrary described safety glass antiglare shield of claim 1 to 5, it is characterized in that: the outer surface that is positioned at the armorplate glass in the outside arranges frosted layer.
7. according to safety glass antiglare shield claimed in claim 6, it is characterized in that: be positioned at the surface of inboard armorplate glass or/and be positioned at the inner surface of the armorplate glass in the outside and be printed with silicate printing ink.
8. the manufacture craft of a safety glass antiglare shield may further comprise the steps successively:
⑴ by alloy roller rolled glass melt, and calendering is made the surface with the glass plate of anti-dazzle lattice, and the heat resisting temperature of alloy roller is more than 800 ℃ and the spot corrosion index is more than 35;
⑵ carry out frosting to glass plate processes, and makes the outer surface of the glass plate that is positioned at the outside form frosted layer;
⑶ to the surface that is positioned at inboard armorplate glass or/and be positioned at the inner surface of the armorplate glass in the outside, finish the glass plate colouring with the silicate ink printing;
⑷ the glass plate after the colouring dries, and then carries out tempering, makes armorplate glass;
⑸ the armorplate glass that place by inside and outside sequential cascade more than two and the silica gel of being located between the armorplate glass place electric heater unit, make armorplate glass and silica gel hot pressing together.
9. according to the manufacture craft of safety glass antiglare shield claimed in claim 8, it is characterized in that: the temperature of drying among the step ⑷ is 100～250 ℃, and the time of drying is 6～24 hours, and the tempering temperature is 550～850 ℃;
The heating-up temperature of step ⑸ is 180～260 ℃, will vacuumize between the armorplate glass.
10. according to the manufacture craft of claim 8 or 9 described safety glass antiglare shields, it is characterized in that: on the surface of alloy roller along " V " type that circumferentially the is distributed with groove of roll body, the outline line indention of anti-dazzle lattice cross section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210443585.5A CN102896840B (en) | 2012-11-09 | 2012-11-09 | A kind of safety glass antiglare shield and production technology thereof being applied to highway communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210443585.5A CN102896840B (en) | 2012-11-09 | 2012-11-09 | A kind of safety glass antiglare shield and production technology thereof being applied to highway communication |
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| CN102896840B CN102896840B (en) | 2016-01-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107663825A (en) * | 2016-09-21 | 2018-02-06 | 淮安信息职业技术学院 | A kind of solar energy highway |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2178719Y (en) * | 1994-03-01 | 1994-10-05 | 徐国庆 | Colour sparkling glass |
| CN2305403Y (en) * | 1996-12-27 | 1999-01-27 | 宁健 | Zigzag refractive glass |
-
2012
- 2012-11-09 CN CN201210443585.5A patent/CN102896840B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2178719Y (en) * | 1994-03-01 | 1994-10-05 | 徐国庆 | Colour sparkling glass |
| CN2305403Y (en) * | 1996-12-27 | 1999-01-27 | 宁健 | Zigzag refractive glass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107663825A (en) * | 2016-09-21 | 2018-02-06 | 淮安信息职业技术学院 | A kind of solar energy highway |
| CN107663825B (en) * | 2016-09-21 | 2019-07-26 | 淮安信息职业技术学院 | A kind of solar energy highway |
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| CN102896840B (en) | 2016-01-27 |
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