A kind of bright low melting point polyester biaxially stretched film and preparation method thereof
A technology of low melting point polyester and biaxial stretching, applied in the fields of polyester biaxially stretched film and its preparation, bright low melting point polyester biaxially stretched film and its preparation, can solve the problem of low melting point polyester structural strength and Problems such as poor crystallinity, difficulty in preparing low-melting polyester, and yellowing of the product can achieve the effects of improving catalytic efficiency and catalytic activity, avoiding low catalytic efficiency, and increasing reaction rate
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Embodiment 1
[0041] A bright low melting point polyester biaxially stretched film and its preparation method, the thickness of the low melting point polyester biaxially stretched film is 50 microns, the transverse heat shrinkage rate is 0.2% at 150°C for 15 minutes, and the longitudinal heat shrinkage rate is 0.2%. The thermal shrinkage rate is 1.0%;
[0042] A method for preparing a biaxially stretched polyester film with high brightness and low melting point is divided into the following steps:
[0043] (1) Preparation of Catalyst-Loaded Luminous Modifier
[0044] Using the sol-gel method, under stirring conditions, add barium hydroxide powder to the aqueous solution of polyethylene glycol 200 until the barium hydroxide is completely dissolved, then add dilute sulfuric acid solution, and stop adding dilute sulfuric acid after precipitation occurs. Then add an aqueous solution of titanyl sulfate to the system, dissolve it, and stir it ultrasonically at 80-95°C, then use pentylene glycol ...
Embodiment 2
[0064] A bright low-melting point polyester biaxially stretched film and a preparation method thereof, the thickness of the low melting point polyester biaxially stretched film is 150 microns, the transverse heat shrinkage rate is 0.1% at 150°C for 15 minutes, and the longitudinal heat shrinkage rate is 0.1%. The thermal shrinkage rate is 1.2%;
[0065] A method for preparing a biaxially stretched polyester film with high brightness and low melting point is divided into the following steps:
[0066] (1) Preparation of Catalyst-Loaded Luminous Modifier
[0067] Using the sol-gel method, under stirring conditions, add barium hydroxide powder to the aqueous solution of polyethylene glycol 200 until the barium hydroxide is completely dissolved, then add dilute sulfuric acid solution, and stop adding dilute sulfuric acid after precipitation occurs. Then add an aqueous solution of titanyl sulfate to the system, dissolve it, and stir it ultrasonically at 95°C, then use pentylene gly...
Embodiment 3
[0087] A bright low-melting point polyester biaxially stretched film and a preparation method thereof, the thickness of the low melting point polyester biaxially stretched film is 350 microns, the transverse heat shrinkage rate is 0.3% at 150°C for 15 minutes, and the longitudinal heat shrinkage rate is 0.3%. The thermal shrinkage rate is 1.3%;
[0088] A method for preparing a biaxially stretched polyester film with high brightness and low melting point is divided into the following steps:
[0089] (1) Preparation of Catalyst-Loaded Luminous Modifier
[0090] Using the sol-gel method, under stirring conditions, add barium hydroxide powder to the aqueous solution of polyethylene glycol 200 until the barium hydroxide is completely dissolved, then add dilute sulfuric acid solution, and stop adding dilute sulfuric acid after precipitation occurs. Then add an aqueous solution of titanyl sulfate to the system, dissolve it, and stir it ultrasonically at 80-95°C, then use pentylene ...
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