High reflectivity PET material for photovoltaic film

A photovoltaic film and high reflectivity technology, which is applied in the field of PET materials, can solve the problem that the reflectivity of photovoltaic films cannot meet the needs of the market, etc., and achieve the effects of improving reflection characteristics, low preparation cost, and improving reflectivity.

Inactive Publication Date: 2016-04-06
大韩道恩高分子材料(上海)有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The reflectivity of photovoltaic thin films prepared by traditional processes can no longer meet the growing market needs

Method used

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  • High reflectivity PET material for photovoltaic film
  • High reflectivity PET material for photovoltaic film
  • High reflectivity PET material for photovoltaic film

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Embodiment Construction

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0034] A high-reflectivity PET material for photovoltaic thin films, including the following raw material components in the weight ratio: 30%-60% of PET chips; 10%-30% of titanium dioxide; 20%-40% of barium sulfate; auxiliary additives 0.5%-5%. The PET chips of the present invention have a certain viscosity, and medium-viscosity and low-viscosity PET chips can be selected. When the medium-viscosity PET chips are selected, the intrinsic viscosity number is 0.59dl / g-0.72dl / g, preferably 0.63dl / g-0.67dl / g. When low-viscosity PET chips are used, the intrinsic viscosity is 0.49dl / g-0.63dl / g, preferably 0.52dl / g-0.61dl / g. Among them, the titanium dioxide adopts rutile type titanium dioxide, the particle size of the titanium dioxide and the barium sulfate are both 1 micron to 5 micron,...

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Abstract

The present invention relates to the technical field of polymer modification and processing, and in particular relates to a PET material. A formula of a high reflectivity PET material for a photovoltaic film is as below: 30%-60% of PET chips, 10%-30% of titanium dioxide, 20%-40% of barium sulfate and 0.5-5% of auxiliary additive. The preparation steps are as below: weighing the materials, sending the materials into a high-speed mixer, feeding the mixture into a twin-screw extruder, and conducting melt extrusion and granulation to obtain the product. According to the technical scheme, the PET material has greatly improved reflectivity compared to the product of the prior art, minimizes the influence on molding processing of PET film, maintains the physical and mechanical properties of unaffected. The preparation process is simple, and low in production cost.

Description

technical field [0001] The invention relates to the technical field of polymer modification and processing, in particular to a PET material. Background technique [0002] With the decrease of non-renewable energy sources, the research, development and utilization of solar energy-based renewable energy sources are getting more and more attention. Since solar energy is a kind of clean energy, and compared to the energy storage of the earth, solar energy is almost a renewable energy source. At present, the effective form of utilization is light conversion heat, or light conversion electricity, to make practical use of solar energy. Among them, the way of photoelectricity conversion includes photothermal power generation and semiconductor photovoltaic power generation. Photothermal power generation is suitable for large-scale power generation. Its energy is first converted into thermal energy through equipment, and then converted into electrical energy through a generator set. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/22C08K3/30B29C47/92B29C48/92
Inventor 张成杰赵德慧河贤洙于晓宁
Owner 大韩道恩高分子材料(上海)有限公司
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