CN110184670B - Modified polyarylester spinning solution and spinning process - Google Patents
Modified polyarylester spinning solution and spinning process Download PDFInfo
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- CN110184670B CN110184670B CN201910423264.0A CN201910423264A CN110184670B CN 110184670 B CN110184670 B CN 110184670B CN 201910423264 A CN201910423264 A CN 201910423264A CN 110184670 B CN110184670 B CN 110184670B
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- polymethylphenylsiloxane
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
Abstract
The invention discloses a modified polyarylate spinning solution, which comprises 97.5-99.5 wt% of polyarylate resin and 0.5-2.5 wt% of polymethylphenylsiloxane, wherein the amount ratio of phenyl to methyl in the polymethylphenylsiloxane is 2.7: 1.0. According to the invention, the polymethylphenylsiloxane is added into the polyarylate resin to carry out blending modification on the polyarylate resin melt, so that the melt viscosity can be effectively reduced, the melt flowability is improved, the polymethylphenylsiloxane hydrogen bonds are reacted with carboxyl groups in polyarylate molecular chains, the number of easily degradable groups is reduced, the polyarylate melt temperature resistance is improved to a certain extent, the spinnable temperature interval is widened, and the problems of high viscosity and difficulty in spinning molding of the plastic-grade polyarylate resin are effectively solved. By using the method, the plastic-grade polyarylate resin can be directly used to prepare the fiber with excellent performance.
Description
Technical Field
The invention relates to the field of modified material preparation, and in particular relates to a modified polyester fiber and a preparation process thereof.
Background
Polyarylate is a class of thermotropic liquid crystalline polymers that was emerging after solute-type liquid crystalline polyamides in the mid 70's of the 20 th century. The polyarylate is dried and then heated to be melted, when the anisotropic liquid crystal polyarylate flows through a spinneret orifice, the aromatic macromolecule chain segment of the polyarylate main chain generates two-dimensional orientation under the action of strong shearing force, the high two-dimensional orientation structure of the fiber can be well maintained after leaving the spinneret orifice, the protofilament directly has a relatively stable two-dimensional orientation structure, no back draft or low-power draft is needed, after tension heat setting, the polyarylate molecular chains are further condensed and the fiber regularity and crystallinity are further improved, so that the strength and modulus of the fiber are greatly improved. Because the main chain of the molecule is basically composed of benzene rings, the polyarylester can be used for preparing thermotropic liquid crystal fibers with high strength and high modulus, even ultrahigh strength and ultrahigh modulus, can be applied to the aerospace field such as airship and the like, can be applied to optical fibers, communication cables and sports goods to play a role in reinforcement, and can also be used as protective composite plates, safety helmets, high-temperature-resistant and high-strength protective gloves and the like. In addition, the material can also be used as a filter material for resisting high temperature, acid and alkali. The fiber has the characteristics of light weight, high strength, heat resistance, wear resistance and low linear expansion coefficient, has good operation performance after being made into a cable rope, and can be used for replacing a steel wire cable rope and weaving a fishing net.
Because the polyarylate resin has high melting point, poor fluidity, sensitive shearing viscosity to temperature and narrow processing temperature range, only plastic polyarylate resin is produced at present in China. Therefore, the modification of the resin to provide spinnability is essential and has a very high practical value.
Disclosure of Invention
The invention aims to solve the technical problem of providing a modified polyarylate spinning solution, which can solve the problems of high polyarylate melt viscosity and difficult spinning forming in the prior art, and therefore, the invention also provides a modified polyarylate spinning process.
In order to solve the problems, the invention adopts the following technical scheme:
the first aspect of the invention provides a modified polyarylate spinning solution, which comprises 97.5-99.5 wt% of polyarylate resin and 0.5-2.5 wt% of polymethylphenylsiloxane, wherein the ratio of the amount of phenyl to methyl in the polymethylphenylsiloxane is 2.7: 1.0.
According to the preferable technical scheme, the polymethylphenylsiloxane has the heavy molecular weight of 2400.
In a preferred embodiment, the polyarylate resin has an inherent viscosity of 4.6 dL/g.
In a preferred embodiment, the polyarylate resin has a water content of less than 50 ppm.
In a second aspect of the present invention, there is provided a modified polyarylate spinning process, which uses the modified polyarylate spinning solution, comprising the following steps:
drying the polyarylate resin, wherein the water content of the polyarylate resin after drying is less than 50 ppm;
step two, respectively heating and melting the polyarylate resin obtained in the step one and polymethylphenylsiloxane, and shearing and mixing the melted polyarylate resin and the melted polymethylphenylsiloxane to obtain a modified polyarylate spinning solution;
step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two to obtain modified polyarylate filaments;
and step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state.
According to the preferred technical scheme, a vacuum drum dryer is adopted in the first step, drying is carried out for 30min at the temperature of 80-100 ℃, the temperature is increased to 120-150 ℃, and the temperature is kept for 2-4 h.
According to the preferable technical scheme, a single-screw extruder is adopted in the heating and melting process of the polyarylate resin in the second step, a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature of the feeding area is 220-260 ℃, the temperature of the melting area is 280-420 ℃, and the temperature of the compression area is 280-420 ℃; the heating and melting process of the polymethylphenylsiloxane is carried out in a stainless steel tank, the shearing and mixing process of the melted polyarylate resin and the melted polymethylphenylsiloxane is carried out in a double-screw extruder, a mixing area and a conveying area are arranged inside the double-screw extruder, the temperature of the mixing area is 280-420 ℃, and the temperature of the conveying area is 280-420 ℃.
According to the preferable technical scheme, the spinning process of the modified polyarylate spinning solution is carried out in a spinning box.
According to the preferable technical scheme, the heat treatment temperature in the fourth step is 220-300 ℃, and the heat treatment time is 12-24 hours.
According to the invention, the polymethylphenylsiloxane is added into the polyarylate resin to carry out blending modification on the polyarylate resin melt, so that the melt viscosity can be effectively reduced, the melt flowability is improved, the polymethylphenylsiloxane hydrogen bonds are reacted with carboxyl groups in polyarylate molecular chains, the number of easily degradable groups is reduced, the polyarylate melt temperature resistance is improved to a certain extent, the spinnable temperature interval is widened, and the problems of high viscosity and difficulty in spinning molding of the plastic-grade polyarylate resin are effectively solved. By using the method, the plastic-grade polyarylate resin can be directly used to prepare the fiber with excellent performance.
Detailed Description
Example 1
A modified polyarylate spinning solution comprising 9.95kg of polyarylate resin, 0.05kg of polymethylphenylsiloxane, wherein the polymethylphenylsiloxane has a heavy molecular weight of 2400, the ratio of the amounts of phenyl groups to methyl groups is 2.7:1.0, and the inherent viscosity of polyarylate resin is 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 80 ℃ by a vacuum drum dryer, heating to 120 ℃, keeping the temperature for 3h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 220 ℃, and the heat treatment time is 24 hours, so as to obtain the high-strength polyarylate filaments.
Example 2
A modified polyarylate spinning solution comprising 9.90kg of polyarylate resin, 0.10kg of polymethylphenylsiloxane, wherein the polymethylphenylsiloxane has a heavy molecular weight of 2400, the ratio of the amounts of phenyl groups to methyl groups is 2.7:1.0, and the inherent viscosity of polyarylate resin is 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 80 ℃ by a vacuum drum dryer, heating to 120 ℃, keeping the temperature for 3h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 220 ℃, and the heat treatment time is 24 hours, so as to obtain the high-strength polyarylate filaments.
Example 3
A modified polyarylate spinning solution comprising 9.85kg of polyarylate resin, 0.15kg of polymethylphenylsiloxane, wherein the polymethylphenylsiloxane has a heavy molecular weight of 2400, the ratio of the amounts of phenyl groups to methyl groups is 2.7:1.0, and the inherent viscosity of polyarylate resin is 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 80 ℃ by a vacuum drum dryer, heating to 120 ℃, keeping the temperature for 3h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 220 ℃, and the heat treatment time is 24 hours, so as to obtain the high-strength polyarylate filaments.
Example 4
A modified polyarylate spinning solution comprising 9.80kg of polyarylate resin, 0.20kg of polymethylphenylsiloxane, having a weight molecular weight of 2400, a ratio of the amounts of phenyl to methyl groups of 2.7:1.0, and having an inherent viscosity of 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 80 ℃ by a vacuum drum dryer, heating to 120 ℃, keeping the temperature for 3h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 220 ℃, and the heat treatment time is 24 hours, so as to obtain the high-strength polyarylate filaments.
Example 5
A modified polyarylate spinning solution comprising 9.90kg of polyarylate resin, 0.10kg of polymethylphenylsiloxane, wherein the polymethylphenylsiloxane has a heavy molecular weight of 2400, the ratio of the amounts of phenyl groups to methyl groups is 2.7:1.0, and the inherent viscosity of polyarylate resin is 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 100 ℃ by a vacuum drum dryer, heating to 150 ℃, keeping the temperature for 2h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 300 ℃, and the heat treatment time is 12 hours, so as to obtain the high-strength polyarylate filaments.
Example 6
A modified polyarylate spinning solution comprising 9.85kg of polyarylate resin, 0.15kg of polymethylphenylsiloxane, wherein the polymethylphenylsiloxane has a heavy molecular weight of 2400, the ratio of the amounts of phenyl groups to methyl groups is 2.7:1.0, and the inherent viscosity of polyarylate resin is 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 80 ℃ by a vacuum drum dryer, heating to 150 ℃, keeping the temperature for 4h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 260 ℃, and the heat treatment time is 18 hours, so as to obtain the high-strength polyarylate filaments.
Example 7
A modified polyarylate spinning solution comprising 9.80kg of polyarylate resin, 0.20kg of polymethylphenylsiloxane, having a weight molecular weight of 2400, a ratio of the amounts of phenyl to methyl groups of 2.7:1.0, and having an inherent viscosity of 4.6 dL/g.
A modified polyarylate spinning process comprising the steps of:
step one, drying the polyarylate resin slices for 30min at the temperature of 80 ℃ by a vacuum drum dryer, heating to 150 ℃, keeping the temperature for 4h, fully extracting wet air in the polyarylate resin, wherein the water content of the dried polyarylate resin is less than 30 ppm.
Step two, melting the polyarylate resin dried in the step one in a single-screw extruder, wherein a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature range of the feeding area is 220-260 ℃, the temperature range of the melting area is 280-420 ℃, and the temperature range of the compression area is 280-420 ℃; putting polymethylphenylsiloxane in a stainless steel tank for melting, wherein the temperature range in the stainless steel tank is 280-420 ℃; the method comprises the following steps of conveying molten polyarylate resin into a double-screw extruder through a booster pump, conveying molten polymethylphenylsiloxane into the double-screw extruder through an injection metering pump, and carrying out blending modification in the double-screw extruder to obtain a modified polyarylate spinning solution, wherein a mixing zone and a conveying zone are arranged in the double-screw extruder, the temperature of the mixing zone is 280-420 ℃, and the temperature of the conveying zone is 280-420 ℃.
And step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two in a spinning box to obtain the modified polyarylate filament.
And step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state, wherein the heat treatment temperature is 260 ℃, and the heat treatment time is 18 hours, so as to obtain the high-strength polyarylate filaments.
Through the performance tests of the embodiments 1 to 4, the technical performance indexes and the experimental results of the invention are as follows:
from the above table, it can be seen that the viscosity of the modified polyarylate spinning solution is significantly reduced as the content of polymethylphenylsiloxane is increased, and the viscosity is reduced most when the content of polymethylphenylsiloxane is 1.5%, so that the blended melt spinning performance is the best. After the content of the polymethylphenylsiloxane exceeds 1.5 percent, the viscosity is improved, the fluidity is poor, the phenomenon of broken filaments and head injection occurs in spinning, the whole spinning experiment process stably runs under the condition that the additive content is less than or equal to 1.5 percent, the viscosity is reduced, the spinning is good, and the design improvement is smooth.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (7)
1. The modified polyarylate spinning solution is characterized by comprising 98.0-99.5 wt% of polyarylate resin and 0.5-2.0 wt% of polymethylphenylsiloxane, wherein the amount ratio of phenyl to methyl in the polymethylphenylsiloxane is 2.7: 1.0;
wherein the polymethylphenylsiloxane has a weight average molecular weight of 2400;
the polyarylate resin had an inherent viscosity of 4.6 dL/g.
2. The modified polyarylate spinning solution of claim 1, wherein: the polyarylate resin has a water content of less than 50 ppm.
3. A modified polyarylate spinning process using the modified polyarylate spinning solution as described in claim 1 or 2, comprising the steps of:
drying the polyarylate resin, wherein the water content of the polyarylate resin after drying is less than 50 ppm;
step two, respectively heating and melting the polyarylate resin obtained in the step one and polymethylphenylsiloxane, and shearing and mixing the melted polyarylate resin and the melted polymethylphenylsiloxane to obtain a modified polyarylate spinning solution;
step three, carrying out spinning on the modified polyarylate spinning solution obtained in the step two to obtain modified polyarylate filaments;
and step four, carrying out heat treatment on the modified polyarylate filaments obtained in the step three in an inert gas or vacuum state.
4. A modified polyarylate spinning process of claim 3, wherein: drying for 30min at the temperature of 80-100 ℃ by adopting a vacuum drum dryer, heating to 120-150 ℃, and keeping the temperature for 2-4 h.
5. A modified polyarylate spinning process of claim 3, wherein: in the second step, a single-screw extruder is adopted in the heating and melting process of the polyarylate resin, a feeding area, a melting area and a compression area are arranged in the single-screw extruder, the temperature of the feeding area is 220-260 ℃, the temperature of the melting area is 280-420 ℃, and the temperature of the compression area is 280-420 ℃; the heating and melting process of the polymethylphenylsiloxane is carried out in a stainless steel tank, the shearing and mixing process of the melted polyarylate resin and the melted polymethylphenylsiloxane is carried out in a double-screw extruder, a mixing area and a conveying area are arranged inside the double-screw extruder, the temperature of the mixing area is 280-420 ℃, and the temperature of the conveying area is 280-420 ℃.
6. A modified polyarylate spinning process of claim 3, wherein: and the spinning process of the modified polyarylate spinning solution is carried out in a spinning box.
7. A modified polyarylate spinning process of claim 3, wherein: in the fourth step, the heat treatment temperature is 220-300 ℃, and the heat treatment time is 12-24 hours.
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| CN111676589A (en) * | 2020-06-15 | 2020-09-18 | 山东滨海新材料科技有限公司 | Dimensionally stable anti-biofouling fiber web |
| CN112095172B (en) * | 2020-09-25 | 2023-04-18 | 宁波海格拉新材料科技有限公司 | High-strength high-modulus fine-denier polyarylate fiber and preparation method thereof |
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| JP2008195859A (en) * | 2007-02-14 | 2008-08-28 | Unitika Ltd | Polyarylate resin composition |
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| CN102071493A (en) * | 2011-01-20 | 2011-05-25 | 东华大学 | Method for preparing thermotropic liquid crystal polyarylester fiber |
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| JPH03146548A (en) * | 1989-11-01 | 1991-06-21 | Kawasaki Steel Corp | Polyarylate resin composition having improved moldability |
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| CN86106830A (en) * | 1985-09-11 | 1987-03-18 | 联合碳化公司 | Silicone-modified vibrin and the siloxanes coating trevira made from it |
| CN101331172A (en) * | 2005-10-11 | 2008-12-24 | 莫门蒂夫性能材料股份有限公司 | Polyarylate-siloxane copolymers |
| JP2008195859A (en) * | 2007-02-14 | 2008-08-28 | Unitika Ltd | Polyarylate resin composition |
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