CN105176071B - A kind of floride-free two layers of co-extrusion photovoltaic back and preparation method thereof - Google Patents
A kind of floride-free two layers of co-extrusion photovoltaic back and preparation method thereof Download PDFInfo
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- CN105176071B CN105176071B CN201510497135.8A CN201510497135A CN105176071B CN 105176071 B CN105176071 B CN 105176071B CN 201510497135 A CN201510497135 A CN 201510497135A CN 105176071 B CN105176071 B CN 105176071B
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Abstract
The present invention relates to technical field of solar batteries, specifically related to a kind of floride-free two layers of co-extrusion photovoltaic back and preparation method thereof, the photovoltaic back includes outer weathering layer and fits in the interior weathering layer of outer weathering layer lower surface, and the lower surface of interior weathering layer is provided with concavo-convex network；The outer weathering layer is polyamide resin layer, and the polyamide modified material includes the raw material of following parts by weight：80 100 parts of polyamide, 10 20 parts of filler A, 0.1 1.0 parts of antioxidant A, 0.1 1.0 parts of ultra-violet absorber A, 0.1 1.0 parts of light stabilizer A.The photovoltaic back of the present invention is floride-free, and weatherability is excellent, and water preventing ability, ageing-resistant performance are excellent, good insulating, not delamination, non-foaming, nondiscolouring when using, can be on photovoltaic cells with more than 25 years, and simple in construction, easy to process, manufacturing cost is low.
Description
Technical field
The present invention relates to technical field of solar batteries, and in particular to a kind of floride-free two layers of co-extrusion photovoltaic back and its preparation
Method.
Background technology
Nowadays, solar cell has been widely used, it is reported that global solar generating adding new capacity in 2014 is
47GW, and photovoltaic back is one of its most important encapsulating material, the reliability of solar cell is largely dependent upon
The reliability of backboard.
In conventional art, photovoltaic back is that both sides are fluororesin-coated or composite protection film using polyester film as base material film
（E films and/or fluorine film）Based on, preparation technology is complicated, and compound backboard has glue degraded risk, causes under bond strength between layers
Drop, coating type backboard there are problems that coating cracking, the pollution of work material environment is fluorinated in addition big, it is impossible to reclaim.
Therefore develop a a kind of floride-free, it is excellent, simple in construction with good insulation properties, water preventing ability, ageing-resistant performance
Photovoltaic back be significant.
The content of the invention
In order to overcome shortcoming and defect present in prior art, it is total to it is an object of the invention to provide a kind of floride-free two layers
Photovoltaic back is squeezed, the photovoltaic back is made up of materials at two layers, floride-free, weatherability is excellent, and water preventing ability, ageing-resistant performance are excellent, absolutely
Edge is good, not delamination, non-foaming, nondiscolouring when using, can on photovoltaic cells with more than 25 years, it is simple in construction, easy to process,
Manufacturing cost is low.
Another object of the present invention is to provide a kind of preparation method of floride-free two layers of co-extrusion photovoltaic back, the preparation method
By using the mode of two layers of melting co-extrusion, traditional adhesive or adhesive agent bonding are eliminated, technique is simple, operational control side
Just, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
The purpose of the present invention is achieved through the following technical solutions：A kind of floride-free two layers of co-extrusion photovoltaic back, the photovoltaic back
Plate includes outer weathering layer and fits in the interior weathering layer of outer weathering layer lower surface, and the lower surface of interior weathering layer is provided with concavo-convex grid
Structure；
The outer weathering layer is polyamide resin layer, and the polyamide modified material includes the raw material of following parts by weight：
80-100 parts of polyamide
10-20 parts of filler A
0.1-1.0 parts of antioxidant A
0.1-1.0 parts of ultra-violet absorber A
0.1-1.0 parts of light stabilizer A；
The interior weathering layer is polyolefin alloy layer, and polyolefin alloy layer is made by polyolefin alloy material, and polyolefin is closed
Golden material includes the raw material of following parts by weight：
80-100 parts of vistanex
5-20 parts of filler B
0.1-1.0 parts of antioxidant B
0.1-1.0 parts of ultra-violet absorber B
0.1-1.0 parts of light stabilizer B.
The present invention is used as outer weathering layer by using polyamide resin layer so that photovoltaic back has case hardness big, resistance to
Mill property is good and preferably impact property.
The present invention by using polyolefin alloy layer be used as interior weathering layer so that photovoltaic back have will not occur hydrolysis,
The performance such as insulating properties is good.
The photovoltaic back of the present invention is made, it is not necessary to use without using fluorine resin using the processing mode of two layers of co-extrusion
Adhesive, adhesive property between layers is excellent, weatherability and hydrolysis resistance are greatly improved, it is ensured that solar energy
The service life of battery；And water preventing ability, ageing-resistant performance are excellent, good insulating, not delamination, non-foaming, nondiscolouring when using can
On photovoltaic cells with more than 25 years, simple in construction, easy to process, manufacturing cost is low.
It is more highly preferred to, the thickness of the outer weathering layer is 20-50 μm, and the polyamide modified material includes following weight
The raw material of part：
85-95 parts of polyamide
12-18 parts of filler A
0.3-0.8 parts of antioxidant A
0.3-0.8 parts of ultra-violet absorber A
0.3-0.8 parts of light stabilizer A.
It is preferred that, the polyamide includes at least one of PA6, PA66, PA1010, PA11 and PA12, and it melts
Point is 170-260 DEG C.The present invention is used as polyamide by using at least one of PA6, PA66, PA1010, PA11 and PA12
Resin, and 170-260 DEG C of its fusing point is controlled, can be for so that photovoltaic back has, case hardness is big, wearability is good and preferably rushes
Hit performance.
It is preferred that, the filler A is titanium dioxide of the particle diameter at 1-5 μm, and titanium dioxide is by rutile type titanium white and sharp
Titanium-type titanium dioxide compares 1 with weight：1.5-2.5 the mixture of composition.Rutile type titanium of the present invention by using particle diameter at 1-5 μm
White powder and anatase thpe white powder control its weight ratio to be 1 as filler A compounding uses：1.5-2.5, can significantly improve the back of the body
Hardness, lustrous surface and the profile pattern of plate.
It is preferred that, the antioxidant A includes antioxidant 1010 and/or antioxidant 626.The present invention is by using antioxidant
1010 and/or antioxidant 626 as antioxidant A, can delay or suppress the progress of backboard oxidizing process, so as to prevent backboard
Aging simultaneously extends its service life.It is more highly preferred to, the antioxidant A is with weight ratio by antioxidant 1010 and antioxidant 626
1:The mixture of 0.5-1.5 compositions.
It is preferred that, the ultra-violet absorber A includes ultra-violet absorber UV-234, ultra-violet absorber UV-360 and purple
At least one of ultraviolet absorbers UV-P.The present invention is by using ultra-violet absorber UV-234, ultra-violet absorber UV-
At least one of 360 and Ultraviolet Absorber UV-P can absorb ultraviolet strongly as ultra-violet absorber A, improve the back of the body
The anti-ultraviolet property of plate, makes backboard not delamination, non-foaming, nondiscolouring when in use, with light stabilizer and with significant
Cooperative effect.It is more highly preferred to, the ultra-violet absorber A is by ultra-violet absorber UV-234, ultra-violet absorber UV-
360 and Ultraviolet Absorber UV-P with weight ratio 1:1.5-2.5:The mixture of 2-4 compositions.
It is preferred that, the light stabilizer A includes light stabilizer GW-994 and/or light stabilizer 770.The present invention by using
Light stabilizer GW-994 and/or light stabilizer 770 can effectively capture high polymer material and make in ultraviolet as light stabilizer A
With the living radical of lower generation, so as to play the stable effectiveness of light.It is more highly preferred to, the light stabilizer A is by light stabilizer
GW-994 and light stabilizer 770 are with weight ratio 1:The mixture of 0.8-1.2 compositions.
It is more highly preferred to, the thickness of the interior weathering layer is 100-500 μm, and the polyolefin alloy material includes following weight
Measure the raw material of part：
85-95 parts of vistanex
8-15 parts of filler B
0.3-0.8 parts of antioxidant B
0.3-0.8 parts of ultra-violet absorber B
0.3-0.8 parts of light stabilizer B.
It is preferred that, the vistanex includes polyethylene, polypropylene, ethene-alpha-olefin copolymer and propylene-alpha-olefin
At least one of copolymer, the polyethylene include melt index 1.0-1.2g/10min high density polyethylene (HDPE), melting
Index 1.8-4.0g/10min low density polyethylene (LDPE) and melt index 1.5-2.5g/10min linear low density polyethylene
At least one of alkene, the polypropylene is Biaxially oriented polypropylene and/or melting of the melt index in 2.0-2.8g/10min
Cast polypropylene of the index in 7.0-8.0g/10min.The present invention is used as vistanex, Ke Yidai by using above-mentioned raw materials
For traditional fluorine film or fluorine coating, weatherability is not only can guarantee that, while environmental protection, cost are less than the backboard of fluorine material structure, to too
Positive energy industry has very important meaning.It is more highly preferred to, the vistanex is in 2.0-2.8g/ by melt index
10min Biaxially oriented polypropylene and melt index with weight compares 0.8-1.2 in 1.8-4.0g/10min low density polyethylene (LDPE):
The mixture of 1 composition；Or, the vistanex be by melt index 2.0-2.8g/10min Biaxially oriented polypropylene
High density polyethylene (HDPE) with melt index in 1.0-1.2g/10min with weight compares 1-2:The mixture of 1 composition；Or, it is described poly-
Olefin resin is in the low of 1.8-4.0g/10min by melt index in 7.0-8.0g/10min cast polypropylene, melt index
Density polyethylene and melt index with weight compare 1.4-2.2 in 1.5-2.5g/10min LLDPE:0.8-
1.2:The mixture of 1 composition.
It is preferred that, the filler B is titanium dioxide of the particle diameter at 1-5 μm, and titanium dioxide is by rutile type titanium white and sharp
Titanium-type titanium dioxide compares 1 with weight：1.5-2.5 the mixture of composition.Rutile type titanium of the present invention by using particle diameter at 1-5 μm
White powder and anatase thpe white powder control its weight ratio to be 1 as filler B compounding uses：1.5-2.5, can significantly improve the back of the body
Hardness, lustrous surface and the profile pattern of plate.
It is preferred that, the antioxidant B includes antioxidant 215 and/or antioxidant 1010.The present invention is by using antioxidant
215 and/or antioxidant 1010 as antioxidant A, can delay or suppress the progress of backboard oxidizing process, so as to prevent backboard
Aging simultaneously extends its service life.It is more highly preferred to, the antioxidant A is with weight ratio by antioxidant 215 and antioxidant 1010
1-2:The mixture of 1 composition.
It is preferred that, the ultra-violet absorber B includes ultra-violet absorber UV-320 and/or ultra-violet absorber UV-
531.The present invention by using ultra-violet absorber UV-320 and/or ultraviolet absorbent UV-531 as ultra-violet absorber B,
Ultraviolet can be absorbed strongly, improved the anti-ultraviolet property of backboard, made backboard not delamination, non-foaming, nondiscolouring when in use,
With light stabilizer and with significant cooperative effect.It is more highly preferred to, the ultra-violet absorber B is by ultra-violet absorber
UV-320 and ultraviolet absorbent UV-531 compare 0.5-1.5 with weight:The mixture of 1 composition.
It is preferred that, the light stabilizer B is light stabilizer UV-1164.The present invention makees by using light stabilizer UV-1164
For light stabilizer B, the living radical that high polymer material is produced under action of ultraviolet radiation can be effectively captured, so that it is steady to play light
Determine effectiveness.
Another object of the present invention is achieved through the following technical solutions：A kind of preparation side of floride-free two layers of co-extrusion photovoltaic back
Method, comprises the following steps：
（1）Polyamide, filler A, antioxidant A, ultra-violet absorber A, light stabilizer A are well mixed, will be stirred
Polyamide modified material is made by double screw extruder extruding pelletization in raw material after mixing；
（2）Vistanex, filler B, antioxidant B, ultra-violet absorber B, light stabilizer B are well mixed, will be stirred
Polyolefin alloy material is made by double screw extruder extruding pelletization in raw material after mixing；
（3）Polyamide modified material and polyolefin alloy material are separately added into corresponding single screw extrusion machine, through bilayer
Co-extrusion die head is extruded, then by two chill roll cooling and shapings up and down, irregular grid is carved in lower chill roll, and the nothing is made
Two layers of co-extrusion photovoltaic back of fluorine.
The preparation method of the present invention eliminates traditional adhesive or adhesive agent is viscous by using the mode of two layers of melting co-extrusion
Close, technique is simple, convenient operation and control, steady quality, production efficiency is high, production cost is low, can large-scale industrial production.
The beneficial effects of the present invention are：The photovoltaic back of the present invention without using fluorine resin, using two layers co-extrusion plus
Work mode is made, it is not necessary to use adhesive, and adhesive property between layers is excellent, weatherability and hydrolysis resistance are obtained greatly
Amplitude is improved, it is ensured that the service life of solar cell；And water preventing ability, ageing-resistant performance are excellent, good insulating, when using not
Delamination, non-foaming, nondiscolouring, can be on photovoltaic cells with more than 25 years, and simple in construction, easy to process, manufacturing cost is low.
The preparation method of the present invention eliminates traditional adhesive or adhesive agent is viscous by using the mode of two layers of melting co-extrusion
Close, technique is simple, convenient operation and control, steady quality, production efficiency is high, production cost is low, can large-scale industrial production.
Brief description of the drawings
Fig. 1 is the sectional view of photovoltaic back of the present invention.
Reference is：1-outer weathering layer, 2-interior weathering layer, 3-concavo-convex network.
Embodiment
For the ease of the understanding of those skilled in the art, with reference to embodiment and accompanying drawing, 1 couple of present invention makees further
Illustrate, the content that embodiment is referred to not limitation of the invention.
Embodiment 1
See Fig. 1, a kind of floride-free two layers of co-extrusion photovoltaic back, the photovoltaic back includes outer weathering layer 1 and fitted in outer resistance to
The interior weathering layer 2 of the lower surface of layer 1 is waited, the lower surface of interior weathering layer 2 is provided with concavo-convex network 3；
The outer weathering layer is polyamide resin layer, and its thickness is 50 μm, and the polyamide modified material includes following weight
Measure the raw material of part：
80 parts of polyamide
20 parts of filler A
0.5 part of antioxidant A
0.6 part of ultra-violet absorber A
0.4 part of light stabilizer A；
The interior weathering layer 2 is polyolefin alloy layer, and its thickness is 250 μm, and polyolefin alloy layer is by polyolefin alloy material
Material is made, and polyolefin alloy material includes the raw material of following parts by weight：
90 parts of vistanex
10 parts of filler B
0.5 part of antioxidant B
0.5 part of ultra-violet absorber B
0.5 part of light stabilizer B.
The polyamide is PA6, and its fusing point is 225 DEG C.
The filler A is titanium dioxide of the particle diameter at 1 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 1.5 compositions；The antioxidant A is antioxidant 1010.
The ultra-violet absorber A is ultra-violet absorber UV-234；The light stabilizer A is light stabilizer GW-994.
The vistanex includes Biaxially oriented polypropylene 45 part and melt index of the melt index in 2.8g/10min
In 1.9g/10min 45 parts of low density polyethylene (LDPE).
The filler B is titanium dioxide of the particle diameter at 1 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 1.5 compositions；The antioxidant B is antioxidant 215.
The ultra-violet absorber B is ultra-violet absorber UV-320；The light stabilizer B is light stabilizer UV-1164.
A kind of preparation method of floride-free two layers of co-extrusion photovoltaic back, is following steps：
（1）Polyamide, filler A, antioxidant A, ultra-violet absorber A, light stabilizer A are well mixed, will be stirred
Polyamide modified material is made by double screw extruder extruding pelletization in raw material after mixing；
（2）Vistanex, filler B, antioxidant B, ultra-violet absorber B, light stabilizer B are well mixed, will be stirred
Polyolefin alloy material is made by double screw extruder extruding pelletization in raw material after mixing；
（3）Polyamide modified material and polyolefin alloy material are separately added into corresponding single screw extrusion machine, through bilayer
Co-extrusion die head is extruded, then by two chill roll cooling and shapings up and down, irregular grid is carved in lower chill roll, and the nothing is made
Two layers of co-extrusion photovoltaic back of fluorine.
Embodiment 2
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 25 μm, and the polyamide modified material includes the raw material of following parts by weight：
85 parts of polyamide
15 parts of filler A
0.5 part of antioxidant A
0.6 part of ultra-violet absorber A
0.4 part of light stabilizer A；
The thickness of the interior weathering layer 2 is 300 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
85 parts of vistanex
15 parts of filler B
0.5 part of antioxidant B
0.5 part of ultra-violet absorber B
0.5 part of light stabilizer B.
The polyamide is PA12, and its fusing point is 176 DEG C.
The filler A is titanium dioxide of the particle diameter at 3 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2 compositions；The antioxidant A is antioxidant 626.
The ultra-violet absorber A is ultra-violet absorber UV-360；The light stabilizer A is light stabilizer 770.
The vistanex includes Biaxially oriented polypropylene 50 part and melt index of the melt index in 2.0g/10min
In 1.1g/10min 35 parts of high density polyethylene (HDPE).
The filler B is titanium dioxide of the particle diameter at 3 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2 compositions；The antioxidant B is antioxidant 215.
The ultra-violet absorber B is ultraviolet absorbent UV-531；The light stabilizer B is light stabilizer UV-1164.
Embodiment 3
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 20 μm, and the polyamide modified material includes the raw material of following parts by weight：
90 parts of polyamide
10 parts of filler A
0.5 part of antioxidant A
0.6 part of ultra-violet absorber A
0.4 part of light stabilizer A；
The thickness of the interior weathering layer 2 is 400 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
90 parts of vistanex
10 parts of filler B
0.5 part of antioxidant B
0.5 part of ultra-violet absorber B
0.5 part of light stabilizer B.
The polyamide is PA66, and its fusing point is 260 DEG C.
The filler A is titanium dioxide of the particle diameter at 5 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2.5 compositions；The antioxidant A is antioxidant 626.
The ultra-violet absorber A is Ultraviolet Absorber UV-P；The light stabilizer A is light stabilizer 770.
The vistanex includes melt index and existed in 7.5g/10min 40 parts of cast polypropylene, melt index
LLDPE 25 part of 4.0g/10min 25 parts of the low density polyethylene (LDPE) and melt index in 2g/10min.
The filler B is titanium dioxide of the particle diameter at 5 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2.5 compositions；The antioxidant B is antioxidant 1010.
The ultra-violet absorber B is ultraviolet absorbent UV-531；The light stabilizer B is light stabilizer UV-1164.
Embodiment 4
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 20 μm, and the polyamide modified material includes the raw material of following parts by weight：
80 parts of polyamide
10 parts of filler A
0.1 part of antioxidant A
0.1 part of ultra-violet absorber A
0.1 part of light stabilizer A；
The thickness of the interior weathering layer 2 is 100 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
80 parts of vistanex
5 parts of filler B
0.1 part of antioxidant B
0.1 part of ultra-violet absorber B
0.1 part of light stabilizer B.
The polyamide is PA1010, and its fusing point is 205 DEG C.
The filler A is titanium dioxide of the particle diameter at 1 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 1.5 compositions；The antioxidant A is with weight ratio 1 by antioxidant 1010 and antioxidant 626:0.5 group
Into mixture.
The ultra-violet absorber A is inhaled by ultra-violet absorber UV-234, ultra-violet absorber UV-360 and ultraviolet
Receive agent UV-P and compare 1 with weight:1.5:The mixture of 2 compositions；The light stabilizer A is by light stabilizer GW-994 and light stabilizer
770 compare 1 with weight:The mixture of 0.8 composition.
The vistanex is that Biaxially oriented polypropylene and melt index by melt index in 2.0g/10min exist
1.8g/10min low density polyethylene (LDPE) compares 0.8 with weight:The mixture of 1 composition.
The filler B is titanium dioxide of the particle diameter at 1 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 1.5 compositions；The antioxidant A is with weight ratio 1 by antioxidant 215 and antioxidant 1010:1 composition
Mixture.
The ultra-violet absorber B is with weight ratio by ultra-violet absorber UV-320 and ultraviolet absorbent UV-531
0.5:The mixture of 1 composition；The light stabilizer B is light stabilizer UV-1164.
Embodiment 5
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 30 μm, and the polyamide modified material includes the raw material of following parts by weight：
85 parts of polyamide
12 parts of filler A
0.3 part of antioxidant A
0.3 part of ultra-violet absorber A
0.3 part of light stabilizer A；
The thickness of the interior weathering layer 2 is 200 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
85 parts of vistanex
10 parts of filler B
0.3 part of antioxidant B
0.3 part of ultra-violet absorber B
0.3 part of light stabilizer B.
The polyamide is PA11, and its fusing point is 189 DEG C.
The filler A is titanium dioxide of the particle diameter at 2 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 1.8 compositions；The antioxidant A is with weight ratio 1 by antioxidant 1010 and antioxidant 626:0.8 group
Into mixture.
The ultra-violet absorber A is inhaled by ultra-violet absorber UV-234, ultra-violet absorber UV-360 and ultraviolet
Receive agent UV-P and compare 1 with weight:1.8:The mixture of 2.5 compositions；The light stabilizer A is stable by light stabilizer GW-994 and light
Agent 770 compares 1 with weight:The mixture of 0.9 composition.
The vistanex be by melt index 2.4g/10min Biaxially oriented polypropylene and melt index in 3g/
10min low density polyethylene (LDPE) compares 1 with weight:The mixture of 1 composition.
The filler B is titanium dioxide of the particle diameter at 2 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 1.8 compositions；The antioxidant A is with weight ratio 1.2 by antioxidant 215 and antioxidant 1010:1 group
Into mixture.
The ultra-violet absorber B is with weight ratio by ultra-violet absorber UV-320 and ultraviolet absorbent UV-531
0.8:The mixture of 1 composition；The light stabilizer B is light stabilizer UV-1164.
Embodiment 6
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 35 μm, and the polyamide modified material includes the raw material of following parts by weight：
90 parts of polyamide
15 parts of filler A
0.5 part of antioxidant A
0.5 part of ultra-violet absorber A
0.5 part of light stabilizer A；
The thickness of the interior weathering layer 2 is 300 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
90 parts of vistanex
12 parts of filler B
0.5 part of antioxidant B
0.5 part of ultra-violet absorber B
0.5 part of light stabilizer B.
The polyamide is PA12, and its fusing point is 176 DEG C.
The filler A is titanium dioxide of the particle diameter at 3 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2 compositions；The antioxidant A is with weight ratio 1 by antioxidant 1010 and antioxidant 626:1 composition
Mixture.
The ultra-violet absorber A is inhaled by ultra-violet absorber UV-234, ultra-violet absorber UV-360 and ultraviolet
Receive agent UV-P and compare 1 with weight:2:The mixture of 3 compositions；The light stabilizer A is by light stabilizer GW-994 and light stabilizer
770 compare 1 with weight:The mixture of 1 composition.
The vistanex is that Biaxially oriented polypropylene and melt index by melt index in 2.4g/10min exist
1.1g/10min high density polyethylene (HDPE) compares 1.5 with weight:The mixture of 1 composition.
The filler B is titanium dioxide of the particle diameter at 3 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2 compositions；The antioxidant A is with weight ratio 1.5 by antioxidant 215 and antioxidant 1010:1 composition
Mixture.
The ultra-violet absorber B is with weight ratio 1 by ultra-violet absorber UV-320 and ultraviolet absorbent UV-531:
The mixture of 1 composition；The light stabilizer B is light stabilizer UV-1164.
Embodiment 7
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 40 μm, and the polyamide modified material includes the raw material of following parts by weight：
95 parts of polyamide
18 parts of filler A
0.8 part of antioxidant A
0.8 part of ultra-violet absorber A
0.8 part of light stabilizer A；
The thickness of the interior weathering layer 2 is 400 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
95 parts of vistanex
16 parts of filler B
0.8 part of antioxidant B
0.8 part of ultra-violet absorber B
0.8 part of light stabilizer B.
The polyamide is PA12, and its fusing point is 176 DEG C.
The filler A is titanium dioxide of the particle diameter at 4 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2.2 compositions；The antioxidant A is with weight ratio 1 by antioxidant 1010 and antioxidant 626:1.2 group
Into mixture.
The ultra-violet absorber A is inhaled by ultra-violet absorber UV-234, ultra-violet absorber UV-360 and ultraviolet
Receive agent UV-P and compare 1 with weight:2.2:The mixture of 3.5 compositions；The light stabilizer A is stable by light stabilizer GW-994 and light
Agent 770 compares 1 with weight:The mixture of 1.1 compositions.
The vistanex is in 1.8g/ by melt index in 7.0g/10min cast polypropylene, melt index
10min low density polyethylene (LDPE) and melt index 1.5g/10min LLDPE with weight ratio 1.4:0.8:1
The mixture of composition.
The filler B is titanium dioxide of the particle diameter at 4 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2.2 compositions；The antioxidant A is with weight to compare 1-2 by antioxidant 215 and antioxidant 1010:1 group
Into mixture.
The ultra-violet absorber B is with weight ratio by ultra-violet absorber UV-320 and ultraviolet absorbent UV-531
1.2:The mixture of 1 composition；The light stabilizer B is light stabilizer UV-1164.
Embodiment 8
The difference of the present embodiment and above-described embodiment 1 is：
The thickness of the outer weathering layer is 50 μm, and the polyamide modified material includes the raw material of following parts by weight：
100 parts of polyamide
20 parts of filler A
1.0 parts of antioxidant A
1.0 parts of ultra-violet absorber A
1.0 parts of light stabilizer A；
The thickness of the interior weathering layer 2 is 500 μm, and the polyolefin alloy material includes the raw material of following parts by weight：
100 parts of vistanex
20 parts of filler B
1.0 parts of antioxidant B
1.0 parts of ultra-violet absorber B
1.0 parts of light stabilizer B.
The polyamide is PA12, and its fusing point is 176 DEG C.
The filler A is titanium dioxide of the particle diameter at 5 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2.5 compositions；The antioxidant A is with weight ratio 1 by antioxidant 1010 and antioxidant 626:1.5 group
Into mixture.
The ultra-violet absorber A is inhaled by ultra-violet absorber UV-234, ultra-violet absorber UV-360 and ultraviolet
Receive agent UV-P and compare 1 with weight:2.5:The mixture of 4 compositions；The light stabilizer A is by light stabilizer GW-994 and light stabilizer
770 compare 1 with weight:The mixture of 1.2 compositions.
The vistanex is in 2.4g/ by melt index in 7.5g/10min cast polypropylene, melt index
10min low density polyethylene (LDPE) and melt index 2g/10min LLDPE with weight ratio 1.8:1:1 composition
Mixture.
The filler B is titanium dioxide of the particle diameter at 5 μm, and titanium dioxide is by rutile type titanium white and anatase thpe white powder
Compare 1 with weight：The mixture of 2.5 compositions；The antioxidant A is with weight ratio 2 by antioxidant 215 and antioxidant 1010:1 composition
Mixture.
The ultra-violet absorber B is with weight ratio by ultra-violet absorber UV-320 and ultraviolet absorbent UV-531
1.5:The mixture of 1 composition；The light stabilizer B is light stabilizer UV-1164.
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can be realized with other manner,
Any obvious replacement is within protection scope of the present invention on the premise of not departing from present inventive concept.
Claims (4)
1. a kind of floride-free two layers of co-extrusion photovoltaic back, it is characterised in that：The photovoltaic back includes outer weathering layer and fitted in outer
The interior weathering layer of weathering layer lower surface, the lower surface of interior weathering layer is provided with concavo-convex network；
The outer weathering layer is polyamide resin layer, and polyamide resin layer is made by polyamide modified material, and the polyamide changes
Property material includes the raw material of following parts by weight：
80-100 parts of polyamide
10-20 parts of filler A
0.1-1.0 parts of antioxidant A
0.1-1.0 parts of ultra-violet absorber A
0.1-1.0 parts of light stabilizer A；
The polyamide includes at least one of PA6, PA66, PA1010, PA11 and PA12, and its fusing point is 170-260
℃；
The filler A be titanium dioxide of the particle diameter at 1-5 μm, titanium dioxide be by rutile type titanium white and anatase thpe white powder with
Weight compares 1：1.5-2.5 the mixture of composition；The antioxidant A includes antioxidant 1010 and/or antioxidant 626；
The ultra-violet absorber A includes ultra-violet absorber UV-234, ultra-violet absorber UV-360 and ultra-violet absorber
At least one of UV-P；The light stabilizer A includes light stabilizer GW-994 and/or light stabilizer 770；
The interior weathering layer is polyolefin alloy layer, and polyolefin alloy layer is made by polyolefin alloy material, polyolefin alloy material
Material includes the raw material of following parts by weight：
80-100 parts of vistanex
5-20 parts of filler B
0.1-1.0 parts of antioxidant B
0.1-1.0 parts of ultra-violet absorber B
0.1-1.0 parts of light stabilizer B；
The vistanex is included in polyethylene, polypropylene, ethene-alpha-olefin copolymer and propylene-alpha-olefin copolymers
It is at least one；The polyethylene includes at least one in high density polyethylene (HDPE), low density polyethylene (LDPE) and LLDPE
Kind；The polypropylene is Biaxially oriented polypropylene and/or cast polypropylene；
The filler B be titanium dioxide of the particle diameter at 1-5 μm, titanium dioxide be by rutile type titanium white and anatase thpe white powder with
Weight compares 1：1.5-2.5 the mixture of composition；The antioxidant B includes antioxidant 215 and/or antioxidant 1010；
The ultra-violet absorber B includes ultra-violet absorber UV-320 and/or ultraviolet absorbent UV-531；The light is stable
Agent B is light stabilizer UV-1164.
2. floride-free two layers of co-extrusion photovoltaic back of one kind according to claim 1, it is characterised in that：The thickness of the outer weathering layer
Spend for 20-50 μm, the polyamide modified material includes the raw material of following parts by weight：
85-95 parts of polyamide
12-18 parts of filler A
0.3-0.8 parts of antioxidant A
0.3-0.8 parts of ultra-violet absorber A
0.3-0.8 parts of light stabilizer A.
3. floride-free two layers of co-extrusion photovoltaic back of one kind according to claim 1, it is characterised in that：The thickness of the interior weathering layer
Spend for 100-500 μm, the polyolefin alloy material includes the raw material of following parts by weight：
85-95 parts of vistanex
8-15 parts of filler B
0.3-0.8 parts of antioxidant B
0.3-0.8 parts of ultra-violet absorber B
0.3-0.8 parts of light stabilizer B.
4. a kind of preparation method of floride-free two layers of co-extrusion photovoltaic back as described in claim any one of 1-3, it is characterised in that：
Comprise the following steps：
（1）Polyamide, filler A, antioxidant A, ultra-violet absorber A, light stabilizer A are well mixed, after stirring
Raw material by double screw extruder extruding pelletization, be made polyamide modified material；
（2）Vistanex, filler B, antioxidant B, ultra-violet absorber B, light stabilizer B are well mixed, after stirring
Raw material by double screw extruder extruding pelletization, be made polyolefin alloy material；
（3）Polyamide modified material and polyolefin alloy material are separately added into corresponding single screw extrusion machine, through double-layer coextrusion
Die head is extruded, then by two chill roll cooling and shapings up and down, irregular grid is carved in lower chill roll, is made described floride-free two
Layer co-extrusion photovoltaic back.
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| CN107254156A (en) * | 2017-06-09 | 2017-10-17 | 江苏东昇光伏科技有限公司 | A kind of preparation method of the floride-free backboard of solar cell |
| CN110774702A (en) * | 2019-09-30 | 2020-02-11 | 常州回天新材料有限公司 | Double-layer co-extruded polyolefin transparent back plate |
| CN111423824B (en) | 2020-06-15 | 2020-09-22 | 杭州福斯特应用材料股份有限公司 | Adhesive film and electronic device comprising same |
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| CN103057228A (en) * | 2012-12-28 | 2013-04-24 | 苏州度辰新材料有限公司 | Backplane for solar energy assembly and preparation method thereof |
| CN203553194U (en) * | 2013-11-25 | 2014-04-16 | 昆山永翔光电科技有限公司 | High heat dissipation solar battery backboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103057228A (en) * | 2012-12-28 | 2013-04-24 | 苏州度辰新材料有限公司 | Backplane for solar energy assembly and preparation method thereof |
| CN203553194U (en) * | 2013-11-25 | 2014-04-16 | 昆山永翔光电科技有限公司 | High heat dissipation solar battery backboard |
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