CN105176071A - Fluorine-free two-layer co-extruded photovoltaic back plate and preparation method thereof - Google Patents
Fluorine-free two-layer co-extruded photovoltaic back plate and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the solar cell technical field, and particularly relates to a fluorine-free two-layer co-extruded photovoltaic back plate and a preparation method thereof. The photovoltaic back plate includes an outer weather-proof layer and an inner weather-proof layer laminated at the lower surface of the outer weather-proof layer, and the lower surface of the inner weather-proof layer is provided with a concave-convex grid structure; the outer weather-proof layer is a polyamide resin layer, and a polyamide modified materials includes the following raw materials in parts by weight: 80-100 parts of polyamide resin, 10-20 parts of a filling agent A, 0.1-1.0 part of an antioxidant A, 0.1-1.0 part of an ultraviolet light absorber A, and 0.1-1.0 part of a light stabilizer A. The photovoltaic back plate is fluorine-free, good in weather resistance, excellent in water resistance and aging resistance, and good in insulativity, is not delaminated, not blistered and not discolored during use, can be used in photovoltaic cells for 25 years or more, and is simple in structure, convenient to process and low in manufacturing cost.
Description
Technical field
The present invention relates to technical field of solar batteries, be specifically related to a kind of floride-free two-layer co-extrusion photovoltaic back and preparation method thereof.
Background technology
Nowadays, solar cell is widely used, it is reported that global solar in 2014 generating adding new capacity is 47GW, and one of photovoltaic back most important packaged material that is it, the reliability of solar cell depends on the reliability of backboard to a great extent.
In conventional art; photovoltaic back is using polyester film as base material film; fluororesin-coated or the composite protection film (E film and/or fluorine film) in both sides is main; complicated process of preparation; there is glue degraded risk in compound backboard, problems such as causing bond strength between layers to decline, coating type backboard exists coating cracking, come off; fluorine chemical material environment is polluted large in addition, can not reclaim.
Therefore develop a a kind of free-floride, have that good insulation properties, water preventing ability, ageing-resistant performance are excellent, structure simple photovoltaic back is significant.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the object of the present invention is to provide a kind of floride-free two-layer co-extrusion photovoltaic back, this photovoltaic back is made up of materials at two layers, free-floride, weathering resistance is excellent, and water preventing ability, ageing-resistant performance are excellent, good insulating, not delamination during use, non-foaming, nondiscoloration, can on photovoltaic cells with more than 25 years, and structure is simple, easy to process, low cost of manufacture.
Another object of the present invention is to the preparation method that the two-layer co-extrusion photovoltaic back of a kind of free-floride is provided, this preparation method is by adopting the mode of two-layer melting co-extrusion, eliminate traditional sizing agent or adhesive agent bonding, technique is simple, convenient operation and control, steady quality, production efficiency is high, production cost is low, can large-scale industrial production.
Object of the present invention is achieved through the following technical solutions: a kind of floride-free two-layer co-extrusion photovoltaic back, and described photovoltaic back comprises 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;
Described outer weathering layer is polyamide resin layer, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 80-100 part
Weighting agent A10-20 part
Oxidation inhibitor A0.1-1.0 part
UV light absorber A0.1-1.0 part
Photostabilizer A0.1-1.0 part;
Described interior weathering layer is polyolefin alloy layer, and polyolefin alloy layer is obtained by polyolefin alloy material, and polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 80-100 part
Weighting agent B5-20 part
Oxidation inhibitor B0.1-1.0 part
UV light absorber B0.1-1.0 part
Photostabilizer B0.1-1.0 part.
The present invention is by adopting polyamide resin layer as outer weathering layer, and photovoltaic back is had, and surface hardness is large, wear resistance is good and preferably impact property.
The present invention, by adopting polyolefin alloy layer as interior weathering layer, makes photovoltaic back have performances such as can not being hydrolyzed, insulativity is good.
Photovoltaic back of the present invention does not use fluorine resin, the processing mode of two-layer co-extrusion is adopted to obtain, do not need to use sizing agent, adhesive property excellence, weathering resistance and resistant to hydrolysis ability are between layers greatly improved, and ensure that the work-ing life of solar cell; And water preventing ability, ageing-resistant performance are excellent, good insulating, not delamination during use, non-foaming, nondiscoloration, can on photovoltaic cells with more than 25 years, and structure is simple, easy to process, low cost of manufacture.
More preferred, the thickness of described outer weathering layer is 20-50 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 85-95 part
Weighting agent A12-18 part
Oxidation inhibitor A0.3-0.8 part
UV light absorber A0.3-0.8 part
Photostabilizer A0.3-0.8 part.
Preferably, described polyamide resin comprises at least one in PA6, PA66, PA1010, PA11 and PA12, and its fusing point is 170-260 DEG C.The present invention by adopting at least one in PA6, PA66, PA1010, PA11 and PA12 as polyamide resin, and controls its fusing point 170-260 DEG C, can be photovoltaic back is had surface hardness is large, wear resistance is good and preferably impact property.
Preferably, described weighting agent A is particle diameter at the titanium dioxide of 1-5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5-2.5 Rutile type Titanium Dioxide and anatase thpe white powder.The present invention is by adopting particle diameter at the Rutile type Titanium Dioxide of 1-5 μm and anatase thpe white powder as the composite use of weighting agent A, and to control its weight ratio be 1:1.5-2.5, can significantly improve the hardness of backboard, surface luster and profile pattern.
Preferably, described oxidation inhibitor A comprises antioxidant 1010 and/or oxidation inhibitor 626.The present invention, by adopting antioxidant 1010 and/or oxidation inhibitor 626 as oxidation inhibitor A, can delay or suppress the carrying out of backboard oxidising process, thus stops the aging of backboard and extend its work-ing life.More preferred, the mixture that described oxidation inhibitor A is made up of with weight ratio 1:0.5-1.5 antioxidant 1010 and oxidation inhibitor 626.
Preferably, described UV light absorber A comprises at least one in UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P.The present invention is by adopting at least one in UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P as UV light absorber A, can strong absorption ultraviolet, improve the anti-ultraviolet property of backboard, make backboard not delamination in use, non-foaming, nondiscoloration, with photostabilizer and with having significant synergistic effect.More preferred, the mixture that described UV light absorber A is made up of with weight ratio 1:1.5-2.5:2-4 UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P.
Preferably, described photostabilizer A comprises photostabilizer GW-994 and/or photostabilizer 770.The present invention, by adopting photostabilizer GW-994 and/or photostabilizer 770 as photostabilizer A, can catch the living radical that macromolecular material produces under action of ultraviolet radiation effectively, thus performance light stablizes effectiveness.More preferred, the mixture that described photostabilizer A is made up of with weight ratio 1:0.8-1.2 photostabilizer GW-994 and photostabilizer 770.
More preferred, the thickness of described interior weathering layer is 100-500 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 85-95 part
Weighting agent B8-15 part
Oxidation inhibitor B0.3-0.8 part
UV light absorber B0.3-0.8 part
Photostabilizer B0.3-0.8 part.
Preferably, described polyolefin resin comprises at least one in polyethylene, polypropylene, ethene-alpha-olefin copolymer and propylene-alpha-olefin copolymers, described polyethylene comprises high density polyethylene(HDPE), the melting index at least one in the Low Density Polyethylene and melting index linear low density polyethylene at 1.5-2.5g/10min of 1.8-4.0g/10min of melting index at 1.0-1.2g/10min, and described polypropylene is melting index at the Biaxially oriented polypropylene film (BOPP) of 2.0-2.8g/10min and/or the melting index cast polypropylene at 7.0-8.0g/10min.The present invention, by adopting above-mentioned raw materials as polyolefin resin, can replace traditional fluorine film or fluorine coating, can not only ensure weathering resistance, and environmental protection simultaneously, cost, lower than the backboard of fluorine material structure, have very important meaning to sun power industry.More preferred, the mixture that described polyolefin resin is made up of with weight ratio 0.8-1.2:1 at the Low Density Polyethylene of 1.8-4.0g/10min in Biaxially oriented polypropylene film (BOPP) and the melting index of 2.0-2.8g/10min melting index; Or, the mixture that described polyolefin resin is made up of with weight ratio 1-2:1 at the high density polyethylene(HDPE) of 1.0-1.2g/10min in Biaxially oriented polypropylene film (BOPP) and the melting index of 2.0-2.8g/10min melting index; Or, the mixture that described polyolefin resin is made up of with weight ratio 1.4-2.2:0.8-1.2:1 at the linear low density polyethylene of 1.5-2.5g/10min in Low Density Polyethylene and the melting index of 1.8-4.0g/10min in the cast polypropylene of 7.0-8.0g/10min, melting index melting index.
Preferably, described weighting agent B is particle diameter at the titanium dioxide of 1-5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5-2.5 Rutile type Titanium Dioxide and anatase thpe white powder.The present invention is by adopting particle diameter at the Rutile type Titanium Dioxide of 1-5 μm and anatase thpe white powder as the composite use of weighting agent B, and to control its weight ratio be 1:1.5-2.5, can significantly improve the hardness of backboard, surface luster and profile pattern.
Preferably, described oxidation inhibitor B comprises oxidation inhibitor 215 and/or antioxidant 1010.The present invention, by adopting oxidation inhibitor 215 and/or antioxidant 1010 as oxidation inhibitor A, can delay or suppress the carrying out of backboard oxidising process, thus stops the aging of backboard and extend its work-ing life.More preferred, the mixture that described oxidation inhibitor A is made up of with weight ratio 1-2:1 oxidation inhibitor 215 and antioxidant 1010.
Preferably, described UV light absorber B comprises UV light absorber UV-320 and/or ultraviolet absorbent UV-531.The present invention is by adopting UV light absorber UV-320 and/or ultraviolet absorbent UV-531 as UV light absorber B, can strong absorption ultraviolet, improve the anti-ultraviolet property of backboard, make backboard not delamination in use, non-foaming, nondiscoloration, with photostabilizer and with having significant synergistic effect.More preferred, the mixture that described UV light absorber B is made up of with weight ratio 0.5-1.5:1 UV light absorber UV-320 and ultraviolet absorbent UV-531.
Preferably, described photostabilizer B is photostabilizer UV-1164.The present invention, by adopting photostabilizer UV-1164 as photostabilizer B, can catch the living radical that macromolecular material produces under action of ultraviolet radiation effectively, thus performance light stablizes effectiveness.
Another object of the present invention is achieved through the following technical solutions: the preparation method of the two-layer co-extrusion photovoltaic back of a kind of free-floride, comprises the steps:
(1) polyamide resin, weighting agent A, oxidation inhibitor A, UV light absorber A, photostabilizer A are mixed, the raw material after stirring is passed through twin screw extruder extruding pelletization, obtained polyamide modified material;
(2) polyolefin resin, weighting agent B, oxidation inhibitor B, UV light absorber B, photostabilizer B are mixed, the raw material after stirring is passed through twin screw extruder extruding pelletization, obtained polyolefin alloy material;
(3) polyamide modified material and polyolefin alloy material are added corresponding single screw extrusion machine respectively, extrude through double-layer coextrusion die head, again by upper and lower two cooling roller cooling and shapings, carve irregular grid at lower cooling roller, the obtained two-layer co-extrusion photovoltaic back of described free-floride.
Preparation method of the present invention is by adopting the mode of two-layer melting co-extrusion, and eliminate traditional sizing agent or adhesive agent bonding, technique is simple, and convenient operation and control, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
Beneficial effect of the present invention is: photovoltaic back of the present invention does not use fluorine resin, the processing mode of two-layer co-extrusion is adopted to obtain, do not need to use sizing agent, adhesive property excellence, weathering resistance and resistant to hydrolysis ability are between layers greatly improved, and ensure that the work-ing life of solar cell; And water preventing ability, ageing-resistant performance are excellent, good insulating, not delamination during use, non-foaming, nondiscoloration, can on photovoltaic cells with more than 25 years, and structure is simple, easy to process, low cost of manufacture.
Preparation method of the present invention is by adopting the mode of two-layer melting co-extrusion, and eliminate traditional sizing agent or adhesive agent bonding, technique is simple, and convenient operation and control, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the sectional view of photovoltaic back of the present invention.
Reference numeral is: 1-outer weathering layer, 2-interior weathering layer, 3-concavo-convex grid structure.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing 1, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Embodiment 1
See Fig. 1, a kind of floride-free two-layer co-extrusion photovoltaic back, described photovoltaic back comprises outer weathering layer 1 and fits in the interior weathering layer 2 of outer weathering layer 1 lower surface, and the lower surface of interior weathering layer 2 is provided with concavo-convex grid structure 3;
Described outer weathering layer is polyamide resin layer, and its thickness is 50 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 80 parts
Weighting agent A20 part
Oxidation inhibitor A0.5 part
UV light absorber A0.6 part
Photostabilizer A0.4 part;
Described interior weathering layer 2 is polyolefin alloy layer, and its thickness is 250 μm, and polyolefin alloy layer is obtained by polyolefin alloy material, and polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 90 parts
Weighting agent B10 part
Oxidation inhibitor B0.5 part
UV light absorber B0.5 part
Photostabilizer B0.5 part.
Described polyamide resin is PA6, and its fusing point is 225 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 1 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor A is antioxidant 1010.
Described UV light absorber A is UV light absorber UV-234; Described photostabilizer A is photostabilizer GW-994.
Described polyolefin resin comprises melting index at the Biaxially oriented polypropylene film (BOPP) 45 parts of 2.8g/10min and the melting index Low Density Polyethylene 45 parts at 1.9g/10min.
Described weighting agent B is particle diameter at the titanium dioxide of 1 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor B is oxidation inhibitor 215.
Described UV light absorber B is UV light absorber UV-320; Described photostabilizer B is photostabilizer UV-1164.
A preparation method for the two-layer co-extrusion photovoltaic back of free-floride is following steps:
(1) polyamide resin, weighting agent A, oxidation inhibitor A, UV light absorber A, photostabilizer A are mixed, the raw material after stirring is passed through twin screw extruder extruding pelletization, obtained polyamide modified material;
(2) polyolefin resin, weighting agent B, oxidation inhibitor B, UV light absorber B, photostabilizer B are mixed, the raw material after stirring is passed through twin screw extruder extruding pelletization, obtained polyolefin alloy material;
(3) polyamide modified material and polyolefin alloy material are added corresponding single screw extrusion machine respectively, extrude through double-layer coextrusion die head, again by upper and lower two cooling roller cooling and shapings, carve irregular grid at lower cooling roller, the obtained two-layer co-extrusion photovoltaic back of described free-floride.
Embodiment 2
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 25 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 85 parts
Weighting agent A15 part
Oxidation inhibitor A0.5 part
UV light absorber A0.6 part
Photostabilizer A0.4 part;
The thickness of described interior weathering layer 2 is 300 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 85 parts
Weighting agent B15 part
Oxidation inhibitor B0.5 part
UV light absorber B0.5 part
Photostabilizer B0.5 part.
Described polyamide resin is PA12, and its fusing point is 176 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 3 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor A is oxidation inhibitor 626.
Described UV light absorber A is UV light absorber UV-360; Described photostabilizer A is photostabilizer 770.
Described polyolefin resin comprises melting index at the Biaxially oriented polypropylene film (BOPP) 50 parts of 2.0g/10min and the melting index high density polyethylene(HDPE) 35 parts at 1.1g/10min.
Described weighting agent B is particle diameter at the titanium dioxide of 3 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor B is oxidation inhibitor 215.
Described UV light absorber B is ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Embodiment 3
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 20 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 90 parts
Weighting agent A10 part
Oxidation inhibitor A0.5 part
UV light absorber A0.6 part
Photostabilizer A0.4 part;
The thickness of described interior weathering layer 2 is 400 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 90 parts
Weighting agent B10 part
Oxidation inhibitor B0.5 part
UV light absorber B0.5 part
Photostabilizer B0.5 part.
Described polyamide resin is PA66, and its fusing point is 260 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2.5 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor A is oxidation inhibitor 626.
Described UV light absorber A is Ultraviolet Absorber UV-P; Described photostabilizer A is photostabilizer 770.
Described polyolefin resin comprises melting index in the cast polypropylene 40 parts of 7.5g/10min, melting index at the Low Density Polyethylene 25 parts of 4.0g/10min and the melting index linear low density polyethylene 25 parts at 2g/10min.
Described weighting agent B is particle diameter at the titanium dioxide of 5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2.5 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor B is antioxidant 1010.
Described UV light absorber B is ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Embodiment 4
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 20 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 80 parts
Weighting agent A10 part
Oxidation inhibitor A0.1 part
UV light absorber A0.1 part
Photostabilizer A0.1 part;
The thickness of described interior weathering layer 2 is 100 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 80 parts
Weighting agent B5 part
Oxidation inhibitor B0.1 part
UV light absorber B0.1 part
Photostabilizer B0.1 part.
Described polyamide resin is PA1010, and its fusing point is 205 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 1 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1:0.5 antioxidant 1010 and oxidation inhibitor 626.
The mixture that described UV light absorber A is made up of with weight ratio 1:1.5:2 UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P; The mixture that described photostabilizer A is made up of with weight ratio 1:0.8 photostabilizer GW-994 and photostabilizer 770.
The mixture that described polyolefin resin is made up of with weight ratio 0.8:1 at the Low Density Polyethylene of 1.8g/10min in Biaxially oriented polypropylene film (BOPP) and the melting index of 2.0g/10min melting index.
Described weighting agent B is particle diameter at the titanium dioxide of 1 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1:1 oxidation inhibitor 215 and antioxidant 1010.
The mixture that described UV light absorber B is made up of with weight ratio 0.5:1 UV light absorber UV-320 and ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Embodiment 5
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 30 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 85 parts
Weighting agent A12 part
Oxidation inhibitor A0.3 part
UV light absorber A0.3 part
Photostabilizer A0.3 part;
The thickness of described interior weathering layer 2 is 200 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 85 parts
Weighting agent B10 part
Oxidation inhibitor B0.3 part
UV light absorber B0.3 part
Photostabilizer B0.3 part.
Described polyamide resin is PA11, and its fusing point is 189 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 2 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.8 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1:0.8 antioxidant 1010 and oxidation inhibitor 626.
The mixture that described UV light absorber A is made up of with weight ratio 1:1.8:2.5 UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P; The mixture that described photostabilizer A is made up of with weight ratio 1:0.9 photostabilizer GW-994 and photostabilizer 770.
The mixture that described polyolefin resin is made up of with weight ratio 1:1 at the Low Density Polyethylene of 3g/10min in Biaxially oriented polypropylene film (BOPP) and the melting index of 2.4g/10min melting index.
Described weighting agent B is particle diameter at the titanium dioxide of 2 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.8 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1.2:1 oxidation inhibitor 215 and antioxidant 1010.
The mixture that described UV light absorber B is made up of with weight ratio 0.8:1 UV light absorber UV-320 and ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Embodiment 6
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 35 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 90 parts
Weighting agent A15 part
Oxidation inhibitor A0.5 part
UV light absorber A0.5 part
Photostabilizer A0.5 part;
The thickness of described interior weathering layer 2 is 300 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 90 parts
Weighting agent B12 part
Oxidation inhibitor B0.5 part
UV light absorber B0.5 part
Photostabilizer B0.5 part.
Described polyamide resin is PA12, and its fusing point is 176 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 3 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1:1 antioxidant 1010 and oxidation inhibitor 626.
The mixture that described UV light absorber A is made up of with weight ratio 1:2:3 UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P; The mixture that described photostabilizer A is made up of with weight ratio 1:1 photostabilizer GW-994 and photostabilizer 770.
The mixture that described polyolefin resin is made up of with weight ratio 1.5:1 at the high density polyethylene(HDPE) of 1.1g/10min in Biaxially oriented polypropylene film (BOPP) and the melting index of 2.4g/10min melting index.
Described weighting agent B is particle diameter at the titanium dioxide of 3 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1.5:1 oxidation inhibitor 215 and antioxidant 1010.
The mixture that described UV light absorber B is made up of with weight ratio 1:1 UV light absorber UV-320 and ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Embodiment 7
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 40 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 95 parts
Weighting agent A18 part
Oxidation inhibitor A0.8 part
UV light absorber A0.8 part
Photostabilizer A0.8 part;
The thickness of described interior weathering layer 2 is 400 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 95 parts
Weighting agent B16 part
Oxidation inhibitor B0.8 part
UV light absorber B0.8 part
Photostabilizer B0.8 part.
Described polyamide resin is PA12, and its fusing point is 176 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 4 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2.2 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1:1.2 antioxidant 1010 and oxidation inhibitor 626.
The mixture that described UV light absorber A is made up of with weight ratio 1:2.2:3.5 UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P; The mixture that described photostabilizer A is made up of with weight ratio 1:1.1 photostabilizer GW-994 and photostabilizer 770.
The mixture that described polyolefin resin is made up of with weight ratio 1.4:0.8:1 at the linear low density polyethylene of 1.5g/10min in Low Density Polyethylene and the melting index of 1.8g/10min in the cast polypropylene of 7.0g/10min, melting index melting index.
Described weighting agent B is particle diameter at the titanium dioxide of 4 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2.2 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1-2:1 oxidation inhibitor 215 and antioxidant 1010.
The mixture that described UV light absorber B is made up of with weight ratio 1.2:1 UV light absorber UV-320 and ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Embodiment 8
The difference of the present embodiment and above-described embodiment 1 is:
The thickness of described outer weathering layer is 50 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 100 parts
Weighting agent A20 part
Oxidation inhibitor A1.0 part
UV light absorber A1.0 part
Photostabilizer A1.0 part;
The thickness of described interior weathering layer 2 is 500 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 100 parts
Weighting agent B20 part
Oxidation inhibitor B1.0 part
UV light absorber B1.0 part
Photostabilizer B1.0 part.
Described polyamide resin is PA12, and its fusing point is 176 DEG C.
Described weighting agent A is particle diameter at the titanium dioxide of 5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2.5 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 1:1.5 antioxidant 1010 and oxidation inhibitor 626.
The mixture that described UV light absorber A is made up of with weight ratio 1:2.5:4 UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P; The mixture that described photostabilizer A is made up of with weight ratio 1:1.2 photostabilizer GW-994 and photostabilizer 770.
The mixture that described polyolefin resin is made up of with weight ratio 1.8:1:1 at the linear low density polyethylene of 2g/10min in Low Density Polyethylene and the melting index of 2.4g/10min in the cast polypropylene of 7.5g/10min, melting index melting index.
Described weighting agent B is particle diameter at the titanium dioxide of 5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:2.5 Rutile type Titanium Dioxide and anatase thpe white powder; The mixture that described oxidation inhibitor A is made up of with weight ratio 2:1 oxidation inhibitor 215 and antioxidant 1010.
The mixture that described UV light absorber B is made up of with weight ratio 1.5:1 UV light absorber UV-320 and ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. the two-layer co-extrusion photovoltaic back of free-floride, is characterized in that: described photovoltaic back comprises 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;
Described outer weathering layer is polyamide resin layer, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 80-100 part
Weighting agent A10-20 part
Oxidation inhibitor A0.1-1.0 part
UV light absorber A0.1-1.0 part
Photostabilizer A0.1-1.0 part;
Described interior weathering layer is polyolefin alloy layer, and polyolefin alloy layer is obtained by polyolefin alloy material, and polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 80-100 part
Weighting agent B5-20 part
Oxidation inhibitor B0.1-1.0 part
UV light absorber B0.1-1.0 part
Photostabilizer B0.1-1.0 part.
2. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, is characterized in that: the thickness of described outer weathering layer is 20-50 μm, and described polyamide modified material comprises the raw material of following weight part:
Polyamide resin 85-95 part
Weighting agent A12-18 part
Oxidation inhibitor A0.3-0.8 part
UV light absorber A0.3-0.8 part
Photostabilizer A0.3-0.8 part.
3. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, it is characterized in that: described polyamide resin comprises at least one in PA6, PA66, PA1010, PA11 and PA12, its fusing point is 170-260 DEG C.
4. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, it is characterized in that: described weighting agent A is particle diameter at the titanium dioxide of 1-5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5-2.5 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor A comprises antioxidant 1010 and/or oxidation inhibitor 626.
5. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, is characterized in that: described UV light absorber A comprises at least one in UV light absorber UV-234, UV light absorber UV-360 and Ultraviolet Absorber UV-P; Described photostabilizer A comprises photostabilizer GW-994 and/or photostabilizer 770.
6. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, is characterized in that: the thickness of described interior weathering layer is 100-500 μm, and described polyolefin alloy material comprises the raw material of following weight part:
Polyolefin resin 85-95 part
Weighting agent B8-15 part
Oxidation inhibitor B0.3-0.8 part
UV light absorber B0.3-0.8 part
Photostabilizer B0.3-0.8 part.
7. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, is characterized in that: described polyolefin resin comprises at least one in polyethylene, polypropylene, ethene-alpha-olefin copolymer and propylene-alpha-olefin copolymers; Described polyethylene comprises at least one in high density polyethylene(HDPE), Low Density Polyethylene and linear low density polyethylene; Described polypropylene is Biaxially oriented polypropylene film (BOPP) and/or cast polypropylene.
8. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, it is characterized in that: described weighting agent B is particle diameter at the titanium dioxide of 1-5 μm, the mixture that titanium dioxide is made up of with weight ratio 1:1.5-2.5 Rutile type Titanium Dioxide and anatase thpe white powder; Described oxidation inhibitor B comprises oxidation inhibitor 215 and/or antioxidant 1010.
9. the floride-free two-layer co-extrusion photovoltaic back of one according to claim 1, is characterized in that: described UV light absorber B comprises UV light absorber UV-320 and/or ultraviolet absorbent UV-531; Described photostabilizer B is photostabilizer UV-1164.
10. the preparation method of the two-layer co-extrusion photovoltaic back of a kind of free-floride as described in any one of claim 1-9, is characterized in that: comprise the steps:
(1) polyamide resin, weighting agent A, oxidation inhibitor A, UV light absorber A, photostabilizer A are mixed, the raw material after stirring is passed through twin screw extruder extruding pelletization, obtained polyamide modified material;
(2) polyolefin resin, weighting agent B, oxidation inhibitor B, UV light absorber B, photostabilizer B are mixed, the raw material after stirring is passed through twin screw extruder extruding pelletization, obtained polyolefin alloy material;
(3) polyamide modified material and polyolefin alloy material are added corresponding single screw extrusion machine respectively, extrude through double-layer coextrusion die head, again by upper and lower two cooling roller cooling and shapings, carve irregular grid at lower cooling roller, the obtained two-layer co-extrusion photovoltaic back of described free-floride.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2022541719A (en) * | 2020-06-15 | 2022-09-27 | 杭州福斯特応用材料股▲分▼有限公司 | Adhesive film and electronic device with the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2022541719A (en) * | 2020-06-15 | 2022-09-27 | 杭州福斯特応用材料股▲分▼有限公司 | Adhesive film and electronic device with the same |
| JP7375051B2 (en) | 2020-06-15 | 2023-11-07 | 杭州福斯特応用材料股▲分▼有限公司 | Adhesive film and electronic device equipped with the same |
| US11905398B2 (en) | 2020-06-15 | 2024-02-20 | Hangzhou First Applied Material Co., Ltd. | Film and electronic device comprising same |
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| CN105176071B (en) | 2017-08-04 |
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