Novel high-shrinkage polyester fiber and preparation method thereof
A polyester fiber, high-shrinkage technology, applied in the field of polyester materials, can solve problems such as few reports, and achieve the effects of easy implementation, widening application scope and simple preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0050] According to a preferred embodiment of the present invention, the novel polyester MPTT is prepared from MPO and PTA.
[0051] According to the present invention, using 2-methyl-1,3-propanediol as diol monomer and terephthalic acid for direct esterification and polycondensation reaction without adding other alcohol monomers, a novel polyester (chip) is obtained. The intrinsic viscosity of the ester chips is greater than 0.7dL / g, preferably more than 0.8dL / g, has good fiber processing performance, and can be used to prepare high-shrinkage new polyester fibers.
[0052] According to a preferred embodiment of the present invention, the intrinsic viscosity of the novel polyester chip is 0.70-0.90 dL / g, preferably 0.756-0.871 dL / g.
[0053] The present invention provides a kind of preparation method of high-shrinkage novel polyester fiber, preferably the method for preparing the high-shrinkage novel polyester fiber described in the first aspect of the present invention, the m...
Embodiment 1
[0129] The polymerization reaction was carried out in a 30L polymerization reactor. Add 3kg of terephthalic acid and 2.11kg of 2-methyl-1,3-propanediol into the reactor, control the esterification reaction temperature at 247°C, the esterification reaction pressure at 300kPa, and the pressurization time of the esterification reaction for 180min , the normal pressure time is 180min, and when the water yield is 94.1%, the esterification reaction ends and the esterification product is obtained;
[0130] After the esterification reaction, vacuumize for 20 minutes, add 390ppm TBT, control the polycondensation reaction pressure to 30Pa, control the polycondensation reaction temperature to 255°C, and the polycondensation reaction time to 195 minutes (including the time when the viscosity of the reaction system does not change for 15 minutes, and the time when the viscosity increases to the time of discharge) 180min), after reaching a certain viscosity, discharging and slicing to obtai...
Embodiment 2
[0136] The polymerization reaction was carried out in a 30L polymerization reactor. Add 3kg of terephthalic acid and 3kg of 2-methyl-1,3-propanediol into the reactor. The temperature of the esterification reaction is controlled at 247°C, the pressure of the esterification reaction is controlled at 300kPa, and the pressurization time of the esterification reaction is 150min. When the normal pressure time is 150min and the water yield is 96.3%, the esterification reaction ends and the esterification product is obtained;
[0137] After the esterification reaction, vacuumize for 20 minutes, add 760ppm TBT, add 1.5mL of triphenyl phosphite, control the polycondensation reaction pressure to 30Pa, control the polycondensation reaction temperature to 255°C, and the polycondensation reaction time to 190min (including the reaction system viscosity unchanged time of 10min, And viscosity increases to the time 180min when discharging), after reaching a certain viscosity, discharging and sl...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Intrinsic viscosity | aaaaa | aaaaa |
| Intrinsic viscosity | aaaaa | aaaaa |
| Shear viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More