Preparation method of polyester for highlight flame-retardant polyester thin film
A technology of flame-retardant polyester and polyester, which is applied in the field of polymers and can solve problems such as not having flame-retardant properties
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Embodiment 1
[0022]Add 400ml glass beads, 160g barium sulfate, and 640g ethylene glycol in a sand mill, and grind for 0.5 hour to prepare barium sulfate-ethylene glycol suspension, wherein the average particle size of barium sulfate is 1.0 μm. Add 100 g of phenylphosphoric acid and 200 g of ethylene glycol into a beaker, heat to 100°C and mix well.
[0023] Add 5.0kg PTA, 3kgEG, 2.0g antimony acetate, 5.8g of the above-mentioned barium sulfate-ethylene glycol suspension into a 20L general-purpose polymerization reactor, and carry out esterification reaction at 235°C and 0.2Mpa (gauge pressure). When it reaches 1200ml, release the pressure to normal pressure, add the above 260g phenylphosphoric acid-ethylene glycol mixture, stir at normal pressure for 10 minutes, raise the temperature and lower the pressure to 280°C and below 100Pa, and react for 3 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and dried at 85°C to obtain high-brightness flame-retardant p...
Embodiment 2
[0026] Add 400ml of glass beads, 400g of barium sulfate, and 400g of ethylene glycol into a sand mill, and grind for 1 hour to prepare a barium sulfate-ethylene glycol suspension. The average particle size of barium sulfate is 1.5 μm. Add 200g of hydroxymethylphenylphosphinic acid and 200g of ethylene glycol into a beaker, heat to 100°C and mix well.
[0027] Add 5.0kg PTA, 3kgEG, 1.662g ethylene glycol antimony, 11.6g of the above-mentioned barium sulfate-ethylene glycol suspension in a 20L general-purpose polymerization reactor, and carry out esterification reaction at 250°C and 0.3Mpa (gauge pressure). When the water output reaches 1200ml, release the pressure to normal pressure, add 347g of the above-mentioned hydroxymethylphenylphosphinic acid ethylene glycol mixture, stir at normal pressure for 10 minutes, raise the temperature and lower the temperature to below 100Pa, and react for 2 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and ...
Embodiment 3
[0030] Add 400ml of glass beads, 320g of barium sulfate, and 480g of ethylene glycol into a sand mill, and grind for 1 hour to prepare a barium sulfate-ethylene glycol suspension. The average particle size of barium sulfate is 3.5 μm. Add 400g of 2-carboxyethylphenylphosphinic acid and 400g of ethylene glycol into a beaker, heat to 100°C and mix well.
[0031] Add 5.0kg PTA, 3kgEG, 0.925g germanium oxide, and 43.4g of the above-mentioned barium sulfate-ethylene glycol suspension into a 20L general-purpose polymerization reactor, and carry out esterification reaction at 265°C and 0.25Mpa (gauge pressure). When it reaches 1200ml, release the pressure to normal pressure, add 694g of the above-mentioned 2-carboxyethylphenylphosphinic acid-ethylene glycol mixture, stir at normal pressure for 10 minutes, raise the temperature and lower the pressure to 280°C and below 100Pa, and react for 1.5 hours. After the reaction is completed, it is extruded by a melt pump, pelletized, and dried...
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