PTFE coating type solar energy insulating back panelTechnical field
The utility model relates to technical field of solar batteries, particularly relates to a kind of PTFE coating type solar energy insulating back panel.
Background technology
Solar energy insulating back panel is generally made up of five-layer structure, and enhancement layer and be compound in respectively outer weathering layer and the interior weathering layer on enhancement layer two sides by tack coat normally connects by binding agent between enhancement layer and two weathering layers.There is following major issue in solar energy backboard at present: in the course of processing, need to use adhesive, outer weathering layer to be easily subject to the erosion of chemical substance.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of PTFE coating type solar energy insulating back panel, can solve the outer weathering layer difficult problem that chemically-resistant material does not corrode that the existing solar energy backboard course of processing need be used adhesive and existing solar energy backboard.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of PTFE coating type solar energy insulating back panel is provided, comprise: outer weathering layer, enhancement layer, tack coat and interior weathering layer, described outer weathering layer, enhancement layer, tack coat and interior weathering layer are linked in sequence successively; Described outer weathering layer is PTFE coating.
In preferred embodiment of the utility model, the build of described PTFE coating is 20～30 μ m.
In preferred embodiment of the utility model, the material PET film of described enhancement layer, thickness is 250～280 μ m.
In preferred embodiment of the utility model, the dry glue thickness of described tack coat is 10～20 μ m.
In preferred embodiment of the utility model, the thickness of described interior weathering layer is 50～70 μ m.
The beneficial effects of the utility model are: a kind of PTFE coating type of the utility model solar energy insulating back panel, and its outer weathering layer adopts PTFE coating, has the following advantages:
1), PTFE coating has and do not get wet and the feature of oily dirt free stain, is not easy to be stained with solvent, a small amount of simply wiping of spot when production;
2), PTFE coating corrodes by any chemical substance also hardly, can protect workpiece to avoid the erosion of all kinds of chemical acid rains;
3), PTFE coating can directly be coated in enhancement layer surface, just can reach required adhesion strength, cancelled the binding agent using between enhancement layer, effectively improved rate of finished products, saved cost.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of PTFE coating type of the utility model solar energy insulating back panel;
In accompanying drawing, the mark of each parts is as follows: 1. PTFE coating, 2. enhancement layer, 3. tack coat, 4. interior weathering layer.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection range of the present utility model is made to more explicit defining.
Refer to Fig. 1, the utility model embodiment comprises:
A kind of PTFE coating type solar energy insulating back panel, comprising: outer weathering layer 1, enhancement layer 2, tack coat 3 and interior weathering layer 4, and described outer weathering layer 1, enhancement layer 2, tack coat 3 and interior weathering layer 4 are linked in sequence successively; Described outer weathering layer 1 is polytetrafluoroethylene (PTFE) coating, and build is 20～30 μ m, adopts the method directly applying to be directly coated on a side of enhancement layer, does not need to use adhesive, has therefore reduced raw material and energy consumption; The material of described enhancement layer 2 is PETG (PET) film, and thickness is 250～280 μ m; The dry glue thickness of described tack coat 3 is 10～20 μ m; The thickness of described interior weathering layer 4 is 50～70 μ m.
Embodiment 1
Outer weathering layer: PTFE coating, build is 20 μ m;
Enhancement layer: PET film, build is 250 μ m;
Tack coat: dry glue thickness is 10 μ m;
Interior weathering layer: thickness is tack coat in 50um.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.