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A special material for polybutylene terephthalate-polyvinylidene fluoride alloy

A technology of polybutylene terephthalate and polyvinylidene fluoride, which is applied in the field of polymer composite materials, can solve the problems of difficult recycling, slow and uneven crystallization rate of PET, and achieve excellent dimensional stability, Improve compatibility and improve the effect of interface state

Active Publication Date: 2019-12-27
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

Method used

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  • A special material for polybutylene terephthalate-polyvinylidene fluoride alloy
  • A special material for polybutylene terephthalate-polyvinylidene fluoride alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Raw material components by weight: 95 parts of polybutylene terephthalate, 5 parts of polyvinylidene fluoride, 2 parts of glycidyl methacrylate grafted modified methyl methacrylate (MMA-g-GMA) , 0.05 parts of antioxidant 1010 and 0.05 parts of antioxidant 168, 10 parts of nanometer titanium dioxide inorganic filler. First weigh the materials according to the above formula, and mix the above materials uniformly in a high-speed mixer, then extrude and granulate the uniformly mixed mixture in a twin-screw extruder, and finally prepare the dried particles through a casting process Into a 10μm film sheet.

Embodiment 2

[0029] The raw material components are calculated by weight: 50 parts of polybutylene terephthalate, 50 parts of polyvinylidene fluoride, 10 parts of amino graft modified butyl methacrylate (MBA-g-NH 2 ), 0.2 parts of antioxidant 1010 and 0.1 parts of antioxidant 168, 15 parts of nano silica. First weigh the materials according to the above formula, and mix the above materials uniformly in a high-speed mixer, then extrude and granulate the uniformly mixed mixture in a twin-screw extruder, and finally prepare the dried particles through a casting process Into a 30μm film sheet.

Embodiment 3

[0031] Raw material components by weight: 20 parts of polybutylene terephthalate, 80 parts of polyvinylidene fluoride, 15 parts of glycidyl methacrylate grafted with butyl methacrylate-methyl acrylate (MBA-MA- g-GMA), 0.2 parts of antioxidant 1010 and 0.1 parts of antioxidant 168, 20 parts of nano calcium carbonate. First weigh the materials according to the above formula, and mix the above materials uniformly in a high-speed mixer, then extrude and granulate the uniformly mixed mixture in a twin-screw extruder, and finally prepare the dried particles through a casting process Into a 50μm film sheet.

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Abstract

The invention discloses a special material for a PBT (polybutylene terephthalate)-PVDF (polyvinylidene fluoride) alloy. The special material is prepared from the following components in parts by weight: 5 to 95 parts of PBT, 5 to 95 parts of PVDF, 2 to 20 parts of a bulking agent, 0.1 to 2 parts of an antioxidant and 10 to 20 parts of inorganic filler. A PBT / PVDF alloy thin film prepared from the special material disclosed by the invention has the characteristics of excellent ultraviolet blocking capability, low water permeability and good hydrolysis resistance endowed by a PVDF thin film, as well as the advantages of low cost and easiness in degradation and recycling endowed by a PBT thin film; besides, the novel outer layer protection material is of great importance to the industry of photovoltaic back plates.

Description

Technical field [0001] The invention belongs to the technical field of polymer composite materials and relates to a material on a solar cell backplane, and in particular to a polyester alloy film material with excellent hydrolysis resistance, weather resistance and excellent mechanical properties. Background technique [0002] The world's conventional energy supply shortage crisis is becoming increasingly serious. Taking oil as an example, by the end of 2009, the world's proven reserves were only available for 45.7 years. Moreover, the over-exploitation and utilization of fossil energy has become one of the main culprits of natural environment pollution and threats to human health. According to the forecast of the European Union 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 renew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L27/16C08L51/00C08K5/134C08K5/526C08K3/22
CPCC08J5/18C08J2327/16C08J2367/02C08J2427/16C08J2467/02C08K2003/2241C08K2003/265C08K2201/011C08L27/16C08L67/02C08L2201/08C08L2203/16C08L2203/204C08L2205/03C08L2205/08C08L51/003C08L51/006C08K5/1345C08K5/526C08K3/22C08K3/26
Inventor 曹厚宝顾方明刘会举王佩刚
Owner HANGZHOU FUMO NEW MATERIAL TECH