Low surface energy polyester film and preparation method and application thereof
A low surface energy, polyester film technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc. Composite and other issues to achieve the effect of meeting food hygiene requirements, simple structure, and low cost
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Example Embodiment
[0058] Example one
[0059] figure 1 It is a schematic cross-sectional view of the first embodiment of the present invention.
[0060] Such as figure 1 It can be seen that the low surface energy polyester film obtained in this embodiment has a two-layer structure, wherein one layer is a modified polyester layer and the other layer is a low surface energy polyester layer.
[0061] Firstly, the raw materials are mixed into modified polyester bright slices, inorganic additive slices and low surface energy additive slices, and they are dried on a boiling bed at a drying temperature of 150°C and a drying time of 4 hours.
[0062] Modified polyester bright slices include: isophthalic acid modified polyethylene terephthalate (the molar content of isophthalic acid is 10%); modified polyester bright slices have been tested Its melting point is 210℃~240℃, and its glass transition temperature is 60℃~80℃.
[0063] Inorganic additive chips include: SiO 2 The mass fraction of the powder is 2300 ppm,...
Example Embodiment
[0071] Example two
[0072] figure 2 It is a schematic cross-sectional view of the second embodiment of the present invention.
[0073] Such as figure 2 It can be seen that the low surface energy polyester film of this embodiment has a three-layer structure, in which two layers are modified polyester layers, and the other layer is a low surface energy polyester layer.
[0074] Firstly, the raw materials are mixed into modified polyester bright slices, inorganic additive slices and low surface energy additive slices, and they are dried on a boiling bed at a drying temperature of 150°C and a drying time of 4 hours.
[0075] Modified polyester bright slices include: isophthalic acid modified polyethylene terephthalate (the molar content of isophthalic acid is 13%); modified polyester bright slices have been tested The melting point is 210℃~240℃.
[0076] Inorganic additive chips include: SiO 2 The mass fraction of the powder is 2000 ppm, and the rest is isophthalic acid modified polye...
Example Embodiment
[0083] Example three
[0084] The low surface energy polyester film of this embodiment has a three-layer structure, in which two layers are modified polyester layers, and the other layer is a low surface energy polyester layer.
[0085] Firstly, the raw materials are mixed into modified polyester bright slices, inorganic additive slices and low surface energy additive slices, and they are dried on a boiling bed at 120°C for 4 hours.
[0086] Modified polyester bright slices include: isophthalic acid modified polyethylene terephthalate (the molar content of isophthalic acid is 16%); modified polyester bright slices have been tested Its melting point is 200℃~240℃, and its glass transition temperature is 60℃~80℃.
[0087] Inorganic additive chips include: SiO 2 The mass fraction of the powder is 2500 ppm, and the rest is isophthalic acid modified polyethylene terephthalate (the molar content ratio of isophthalic acid is 16%).
[0088] The low surface energy additive chip includes: 4% by w...
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