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Fluorocopolymer film and its application

A fluorine copolymer and film technology, applied in the field of fluorine copolymer film, can solve problems such as film rupture, and achieve the effects of excellent tear strength or tensile strength, excellent transparency and excellent appearance

Active Publication Date: 2010-09-22
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A stirrer-equipped polymerization reactor with an internal volume of 94 liters was degassed. 70.6 kg of 1-hydrotridecafluorohexane, 20.4 kg of 1,3-dichloro-1,1,2,2,3-pentafluoropropane (manufactured by Asahi Glass Company. Limited, hereinafter referred to as AK225cb), 1.89 kg PPVE and 2.25 kg HFP were fed into the polymerization reactor. The temperature inside the polymerization reactor was raised to 66° C., and a TFE / ethylene gas mixture with a molar ratio of 76 / 24 was injected until the pressure reached 1.5 MPa-G. 65 ml of a 1% by mass AK225cb solution of tert-butyl peroxypivalate as a polymerization initiator was charged into the polymerization reactor to initiate the polymerization reaction. The monomer mixture gas of TFE / ethylene=50 / 50 (molar ratio) was continuously fed to keep the pressure constant during the polymerization reaction. 7.3 hours after the initiation of the polymerization reaction, at this time, 7.1 kg of monomer mixed gas was added to lower the te...

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Abstract

A fluorin multipolymer film is formed by a multipolymer which comprises an ethylene repeating unit, a tetrafluoroethylene matrix repeating unit, a hexafluoropropene repeating unit and a fluoroalkane matrix ether vinylicus matrix repeating unit under the moulding temperature of at most 320 DEG C. The fluoroalkane matrix ether vinylicus is that CF2 is equal to CROR<f>(R<f> refers to C1-10fluoroalkane matrix). The mol ratio of the ethylene repeating unit and the tetrafluoroethylene matrix repeating unit is 10 / 90 to 60 / 40. The content of the hexafluoropropene repeating unit is 0.1 to 20 mol percent of the complete repeating units. The content of the fluoroalkane matrix ether vinylicus in the complete repeating units is 0.1 to 10 mol percent and the volume flow rate of the multipolymer under 297 DEG C is 0.1 to 30mm<3>.

Description

technical field [0001] The invention relates to a fluorine copolymer film with excellent appearance and its application. technical background [0002] Fluororesin films and films made of fluororesin composite materials are light in weight, have excellent weather resistance and mechanical strength, and can therefore be used as covering materials for covering such as swimming pools, gymnasiums, tennis courts, football fields, warehouses, auditoriums, Exhibition halls, horticultural greenhouses or agricultural greenhouses (for example, JP-A-3-188132, JP-A-63-222852). However, the film disclosed in JP-A-63-222852 made of a composite material of glass fiber and fluororesin has insufficient transparency. Therefore, if the film is used as a covering material for a roof of a building, the roof has low solar transmittance. In this way, the plants inside the building cannot fully grow. Therefore, the above films made from said composite materials are not suitable for use as coverin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/26C08F16/24C08J5/18C08L27/18C08J5/00C08F214/18
CPCC08F214/265C08F214/26C08J5/00C08J2327/12
Inventor 相田茂山内優有賀広志
Owner ASAHI GLASS CO LTD