Thermoplastic polyester/polyethylene composition and application thereof

A thermoplastic polyester and polyethylene technology, which is applied in the field of thermoplastic polyester/polyethylene compositions, can solve the problems of slow crystallization rate of PET, difficulty in recycling, high price of fluoropolymers, etc., to improve dimensional stability, excellent Effects of dimensional stability and excellent hydrolysis resistance

Inactive Publication Date: 2015-04-29
HANGZHOU FUMO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Thermoplastic polyester/polyethylene composition and application thereof
  • Thermoplastic polyester/polyethylene composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Raw material components by weight: 20 parts of polyethylene terephthalate, 80 parts of polyethylene, 2 parts of glycidyl methacrylate grafted modified ethylene butyl acrylate (EBA-GMA), 0.2 parts of antioxidant agent 1010 and 0.1 part of antioxidant 168.

[0024] First, weigh the materials according to the above formula, and mix the above materials uniformly in a high-speed mixer, and then extrude and granulate the uniformly mixed mixture in a twin-screw extruder, wherein the melting and plasticizing temperature of the screw is set to 245 ℃, the rotation speed of the screw host is 300RPM, and the residence time of the material in the screw is 20 seconds. After the extruded material is water-cooled, it is cut into pellets to obtain blend particles, and finally the dried particles are prepared into 100μm by melt extrusion process. Film sheet.

Embodiment 2

[0026] Raw material components by weight: 40 parts of polybutylene terephthalate, 60 parts of polyethylene, 10 parts of maleic anhydride graft modified ethylene vinyl acetate copolymer (EVA-MAH), 0.2 part of antioxidant 1010 and 0.1 parts of antioxidant 168. First, weigh the materials according to the above formula, and mix the above materials uniformly in a high-speed mixer, and then extrude and granulate the uniformly mixed mixture in a twin-screw extruder, wherein the melting and plasticizing temperature of the screw is set to 245 ℃, the rotation speed of the screw host is 300RPM, and the residence time of the material in the screw is 20 seconds. After the extruded material is water-cooled, it is cut into pellets to obtain blend particles, and finally the dried particles are prepared into 100μm by melt extrusion process. Film sheet.

Embodiment 3

[0028] Raw material components by weight: 30 parts of polypropylene terephthalate, 70 parts of polyethylene, 15 parts of glycidyl methacrylate grafted ethylene-vinyl acetate (EVA-GMA), 0.2 part of antioxidant 1010 and 0.1 part Antioxidant 168. First, weigh the materials according to the above formula, and mix the above materials uniformly in a high-speed mixer, and then extrude and granulate the uniformly mixed mixture in a twin-screw extruder, wherein the melting and plasticizing temperature of the screw is set to 245 ℃, the rotation speed of the screw host is 300RPM, and the residence time of the material in the screw is 20 seconds. After the extruded material is water-cooled, it is cut into pellets to obtain blend particles, and finally the dried particles are prepared into 100μm by melt extrusion process. Film sheet.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L23/08B29C47/92H01L31/049B29C48/92
CPCY02E10/50
Inventor 顾方明曹厚宝刘会举
Owner HANGZHOU FUMO NEW MATERIAL TECH
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