Thermoplastic polyester/polyethylene composition and application thereof

Abstract

The invention belongs to the technical field of high-polymer composite materials, and relates to a thermoplastic polyester / polyethylene composition and application thereof. The thermoplastic polyester / polyethylene composition is prepared from the following components in parts by weight: 20-80 parts of thermoplastic polyester, 20-80 parts of polyethylene, 2-20 parts of solubilizer and 0.1-2 parts of antioxidant, wherein the sum of the thermoplastic polyester and polyethylene is 100 parts. The obtained thermoplastic polyester / polyethylene composition is a uniform-phase composite material, and has favorable properties of the thermoplastic polyester and polyethylene. The polyester / polyethylene alloy material prepared from the thermoplastic polyester / polyethylene composition has the inherent advantages of the PBT (polybutylene terephthalate) and PE (polyethylene), thereby greatly improving the properties of the alloy material and greatly enhancing the dimensional stability and tensile property of the alloy film material; and thus, the alloy material has the advantages of high-temperature resistance, ultraviolet resistance, weather resistance, hydrolysis resistance, low production cost and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to a material on a solar battery backplane, in particular to a thermoplastic polyester / polyethylene composition and an application thereof. Background technique [0002] The world's conventional energy supply shortage crisis is becoming more and more serious. Taking oil as an example, by the end of 2009, the world's proven reserves can only be exploited for 45.7 years. Moreover, the excessive development and utilization of fossil energy has become one of the main culprits that pollute the natural environment and threaten human health. According to the prediction of the EU Joint Research Center, by 2050, the proportion of renewable energy will exceed that of traditional energy, accounting for about 52%, of which solar energy will account for more than half, about 28%. By the end of this century, the proportion of renewable energy will account for 86%, while solar w...

AI Technical Summary

Problems solved by technology

Among them, the fluoropolymer backsheet has excellent UV resistance, but fluoropolymers have problems such as high price, high investment cost of production equipment, and difficulty in recycling, which greatly hinders the promotion and development of solar cells.

Compared with the fluorine-containing backsheet, the price of the all-PET backsheet is lower, but it still has the disadvantages of poor hydrolysis resistance and ultraviolet resistance, and because the crystallization rate of PET is slow, the crystallization is not perfect and uneven, it needs to be processed. The film is biaxially stretched to improve its performance, which also increases the production cost of PET film

Because the ultimate goal of the photovoltaic industry is to achieve grid parity without government subsidies, the performance of any PV photovoltaic backplane must be evaluated together with its production cost - if it cannot meet the cost-effectiveness goals of the photovoltaic industry, no matter how good the performance Polymer backsheets are also not widely used

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