CN110318121B - PET/PBT blending modified fiber - Google Patents
PET/PBT blending modified fiber Download PDFInfo
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- CN110318121B CN110318121B CN201910710533.1A CN201910710533A CN110318121B CN 110318121 B CN110318121 B CN 110318121B CN 201910710533 A CN201910710533 A CN 201910710533A CN 110318121 B CN110318121 B CN 110318121B
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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
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a PET/PBT blending modified fiber, which comprises the following components in parts by weight: PBT: 30-50 parts of PET: 80-120 parts of 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran: 0.1-0.5 parts of a nucleation promoter: 0.5-1 part of hydrophilic modifier: 0.5-1 part of hydrophilic modifier, wherein the hydrophilic modifier is: a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxymethoxy) benzene. The PBT and the PET are used as main bodies and are blended to prepare the blending material, and the hydrophilic group on the surface of the blending material is increased by adding the hydrophilic modifier, so that the color fastness of the water-based dye can be improved in the dyeing process of the water-based dye.
Description
Technical Field
The invention relates to a fiber, in particular to a PET/PBT blending modified fiber.
Background
PET (polyethylene terephthalate), which is a linear thermoplastic polymer that was first industrialized in 1953 by Dupont, is a crystalline high polymer having a high melting temperature (Tm) and glass transition temperature (Tg), can maintain excellent physical and mechanical properties in a wide temperature range, has excellent fatigue resistance and friction resistance, excellent aging resistance, outstanding electrical insulation, is stable to most organic solvents and inorganic acids, and has low energy consumption for production and good processability, and thus is widely used in the fields of synthetic fibers, films, engineering plastics, etc., but has the disadvantages of slow crystallization speed due to the rigidity of PET, high molding die temperature, and long molding cycle, and thus has limited application in the field of engineering plastics.
The molecular chain segment flexibility of PBT (polybutylene terephthalate) is better than that of PET, and the PBT has good mechanical property, low thermal deformation temperature and high crystallization rate.
In the prior art, PET and PBT are used for preparing blend fibers, but the high polymer fibers are all dyed by oil dyes, so that the pollution is large.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a water-based PET/PBT blending modified fiber.
In order to achieve the purpose, the invention provides the following technical scheme:
a PET/PBT blending modified fiber,
comprises the following components in parts by weight:
PBT: 30 to 50 portions of
PET: 80 to 120 parts by weight of
4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran: 0.1 to 0.5 portion
A nucleation promoter: 0.5 to 1 portion
Hydrophilic modifier: 0.5 to 1 portion
The hydrophilic modifier is:
a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxymethoxy) benzene.
As a further improvement of the present invention,
comprises the following components in parts by weight:
PBT: 50 portions of
PET: 100 portions of
4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran: 0.2 part
A nucleation promoter: 0.3 part
Hydrophilic modifier: 0.6 part.
As a further improvement of the present invention,
the hydrophilic modifier is a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxymethoxy) benzene in a mass ratio of 5: 1.
As a further improvement of the present invention,
the nucleation accelerant is nano calcium carbonate.
As a further improvement of the present invention,
the preparation method comprises the following steps:
the method comprises the following steps: drying the PET and the PBT;
step two: mixing a hydrophilic modifier with 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran;
step three: mixing the dried material in the step one with the mixture in the step two;
step four: mixing the mixture obtained in the third step with other raw materials;
step five: adding the mixture obtained in the fourth step into a double-screw extruder for extrusion and granulation;
step six: and (5) carrying out melt spinning on the particles in the step five to obtain fibers.
As a further improvement of the present invention,
in the fifth step:
adding glass fiber into the middle section of the double screw, and performing melt blending extrusion, water cooling, air drying and grain cutting;
wherein the temperature of the twin-screw extruder is set as follows: a first area: 200 ℃; and a second zone: 220 ℃; and (3) three zones: 220-220 ℃; and (4) four areas:
240 ℃; and a fifth zone: 250 ℃; a sixth zone: 250 ℃; seven areas: 250 ℃; and eight regions: 260 ℃; head temperature: 250 ℃; screw speed control
At 200-400 r/min.
As a further improvement of the present invention,
in the first step, the drying temperature is 120 ℃, and the drying time is 12 h.
In the invention, PBT and PET are taken as main bodies and blended to prepare the blending material, and the hydrophilic group on the surface of the blending material is increased by adding the hydrophilic modifier, so that the color fastness of the water-based dye can be improved in the dyeing process using the water-based dye. In the selection of the water-based dye, a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxy methoxy) benzene is selected, the first phase of the two substances has good compatibility, can be uniformly dispersed with PBT and PET in the mixing process, and can react with the PBT and the PET in the blending process, so that the blending polymer has a hydrophilic group, and in addition, the addition of the 1-methoxy-2- (epoxy methoxy) benzene also has a certain effect of improving the oxygen resistance.
Detailed Description
The first embodiment is as follows:
a PET/PBT blending modified fiber,
comprises the following components in parts by weight:
PBT: 50 portions of
PET: 100 portions of
4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran: 0.2 part
A nucleation promoter: 0.3 part
Hydrophilic modifier: 0.6 part.
The hydrophilic modifier is a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxymethoxy) benzene in a mass ratio of 5: 1.
The nucleation accelerant is nano calcium carbonate.
The preparation method comprises the following steps:
the method comprises the following steps: drying the PET and the PBT;
step two: mixing a hydrophilic modifier with 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran;
step three: mixing the dried material in the step one with the mixture in the step two;
step four: mixing the mixture obtained in the third step with other raw materials;
step five: adding the mixture obtained in the fourth step into a double-screw extruder for extrusion and granulation;
step six: and (5) carrying out melt spinning on the particles in the step five to obtain fibers.
In the fifth step:
adding glass fiber into the middle section of the double screw, and performing melt blending extrusion, water cooling, air drying and grain cutting;
wherein the temperature of the twin-screw extruder is set as follows: a first area: 200 ℃; and a second zone: 220 ℃; and (3) three zones: 220-220 ℃; and (4) four areas:
240 ℃; and a fifth zone: 250 ℃; a sixth zone: 250 ℃; seven areas: 250 ℃; and eight regions: 260 ℃; head temperature: 250 ℃; screw speed control
At 200-400 r/min.
In the first step, the drying temperature is 120 ℃, and the drying time is 12 h.
Comparative example one:
a PET/PBT blending modified fiber,
comprises the following components in parts by weight:
PBT: 50 portions of
PET: 100 portions of
A nucleation promoter: 0.3 part
Hydrophilic modifier: 0.6 part.
The hydrophilic modifier is 1-methoxy-2- (epoxy methoxy) benzene.
The nucleation accelerant is nano calcium carbonate.
The preparation method comprises the following steps:
the method comprises the following steps: drying the PET and the PBT;
step two: mixing a hydrophilic modifier with the dried material in the first step;
step three: mixing the mixture obtained in the step two with other raw materials;
step four: adding the mixture obtained in the third step into a double-screw extruder for extrusion and granulation;
step four: and (4) carrying out melt spinning on the particles in the third step to obtain the fiber.
In the fourth step:
adding glass fiber into the middle section of the double screw, and performing melt blending extrusion, water cooling, air drying and grain cutting;
wherein the temperature of the twin-screw extruder is set as follows: a first area: 200 ℃; and a second zone: 220 ℃; and (3) three zones: 220-220 ℃; and (4) four areas:
240 ℃; and a fifth zone: 250 ℃; a sixth zone: 250 ℃; seven areas: 250 ℃; and eight regions: 260 ℃; head temperature: 250 ℃; screw speed control
At 200-400 r/min.
In the first step, the drying temperature is 120 ℃, and the drying time is 12 h.
Comparative example two:
a PET/PBT blending modified fiber,
comprises the following components in parts by weight:
PBT: 50 portions of
PET: 100 portions of
A nucleation promoter: 0.3 part
Hydrophilic modifier: 0.6 part.
The hydrophilic modifier is N- (3-triethoxysilylpropyl) -4-hydroxybutyramide.
The nucleation accelerant is nano calcium carbonate.
The preparation method comprises the following steps:
the method comprises the following steps: drying the PET and the PBT;
step two: mixing a hydrophilic modifier with the dried material in the first step;
step three: mixing the mixture obtained in the step two with other raw materials;
step four: adding the mixture obtained in the third step into a double-screw extruder for extrusion and granulation;
step four: and (4) carrying out melt spinning on the particles in the third step to obtain the fiber.
In the fifth step:
adding glass fiber into the middle section of the double screw, and performing melt blending extrusion, water cooling, air drying and grain cutting;
wherein the temperature of the twin-screw extruder is set as follows: a first area: 200 ℃; and a second zone: 220 ℃; and (3) three zones: 220-220 ℃; and (4) four areas:
240 ℃; and a fifth zone: 250 ℃; a sixth zone: 250 ℃; seven areas: 250 ℃; and eight regions: 260 ℃; head temperature: 250 ℃; screw speed control
At 200-400 r/min.
In the first step, the drying temperature is 120 ℃, and the drying time is 12 h.
Comparative example three:
a PET/PBT blending modified fiber,
comprises the following components in parts by weight:
PBT: 50 portions of
PET: 100 portions of
A nucleation promoter: 0.3 part
The nucleation accelerant is nano calcium carbonate.
The preparation method comprises the following steps:
the method comprises the following steps: drying the PET and the PBT;
step two: mixing PET and PBT;
step three: adding the mixture obtained in the step two into a double-screw extruder for extrusion and granulation;
step four: and (4) carrying out melt spinning on the particles in the third step to obtain the fiber.
In the third step:
adding glass fiber into the middle section of the double screw, and performing melt blending extrusion, water cooling, air drying and grain cutting;
wherein the temperature of the twin-screw extruder is set as follows: a first area: 200 ℃; and a second zone: 220 ℃; and (3) three zones: 220-220 ℃; and (4) four areas:
240 ℃; and a fifth zone: 250 ℃; a sixth zone: 250 ℃; seven areas: 250 ℃; and eight regions: 260 ℃; head temperature: 250 ℃; screw speed control
At 200-400 r/min.
In the first step, the drying temperature is 120 ℃, and the drying time is 12 h.
The particles of example one and comparative example one were subjected to a thermo-oxidative stability test and the fibers were dyed with aqueous dyes to check the color fastness.
The water-based dye is water-based blue water-soluble dye of Xinxiang City Longshu chemical Co.
TABLE 1 thermo-oxidative stability test results
| Melt index/g/10 min | Yellow index | |
| Example one | 9.3 | 4.2 |
| Comparative example 1 | 10.5 | 6.2 |
| Comparative example No. two | 11.3 | 7.6 |
| Comparative example No. three | 12.6 | 8.4 |
TABLE 2 color fastness testing
| Color fastness to washing | Color fastness to sunlight | |
| Example one | 4 stage | Grade 6 |
| Comparative example 1 | Grade 3 | Grade 3 |
| Comparative example No. two | Grade 3 | Stage 2 |
| Comparative example No. three | Level 1 | Level 1 |
As can be seen from Table 1, example one of the present invention has a lower melt index and yellowness index.
The melt index is a value representing the fluidity of a plastic material at the time of processing. It is made by the american society for measuring standards (ASTM) according to the method of characterization of plastics, which is commonly used by dupont, usa, and the test method is to melt plastic pellets into plastic fluid for a certain time (10 minutes), at a certain temperature and pressure (different standards for various materials), and then to measure the number of grams (g) that flows out through a 2.095mm diameter round tube. The larger the value, the better the processing fluidity of the plastic material, and the worse the processing fluidity.
The color index refers to the degree of departure of the polymer material from white or yellowing. The yellowness index can be used to control certain product qualities or aging. The higher the yellowness index, the higher the degree of ageing.
In comparative example one and comparative example two, it can be seen that the oxidation resistance can not be effectively improved by adding N- (3-triethoxysilylpropyl) -4-hydroxybutyramide alone, but can be effectively improved by adding 1-methoxy-2- (epoxymethoxy) benzene, and the oxidation resistance can be remarkably improved under the action of 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran.
As can be seen in Table 2, in the first example, the technical scheme of the invention is remarkably improved regardless of the color fastness to washing and the appropriate light fastness, while in the first and second comparative examples, the color fastness can be partially improved by adding N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxymethoxy) benzene separately, but after the compound is used, the color fastness is greatly improved.
In the invention, PBT and PET are taken as main bodies and blended to prepare the blending material, and the hydrophilic group on the surface of the blending material is increased by adding the hydrophilic modifier, so that the color fastness of the water-based dye can be improved in the dyeing process using the water-based dye. In the selection of the water-based dye, a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxy methoxy) benzene is selected, the first phase of the two substances has good compatibility, can be uniformly dispersed with PBT and PET in the mixing process, and can react with the PBT and the PET in the blending process, so that the blending polymer has a hydrophilic group, and in addition, the addition of the 1-methoxy-2- (epoxy methoxy) benzene also has a certain effect of improving the oxygen resistance.
And, the stability of the blended material is improved by adding 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyrane.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. A PET/PBT blending modified fiber is characterized in that:
comprises the following components in parts by weight:
PBT: 50 portions of
PET: 100 portions of
4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran: 0.2 part
A nucleation promoter: 0.3 part
Hydrophilic modifier: 0.6 part;
the hydrophilic modifier is a mixture of N- (3-triethoxysilylpropyl) -4-hydroxybutyramide and 1-methoxy-2- (epoxymethoxy) benzene in a mass ratio of 5: 1.
2. The PET/PBT blend modified fiber according to claim 1, wherein:
the nucleation accelerant is nano calcium carbonate.
3. The PET/PBT blend modified fiber according to claim 1, wherein:
the preparation method comprises the following steps:
the method comprises the following steps: drying the PET and the PBT;
step two: mixing a hydrophilic modifier with 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran;
step three: mixing the dried material in the step one with the mixture in the step two;
step four: mixing the mixture obtained in the third step with other raw materials;
step five: adding the mixture obtained in the fourth step into a double-screw extruder for extrusion and granulation;
step six: and (5) carrying out melt spinning on the particles in the step five to obtain fibers.
4. The PET/PBT blend modified fiber according to claim 3, wherein:
in the fifth step:
melting, blending and extruding by a double-screw extruder, cooling by water, air-drying and granulating;
wherein the temperature of the twin-screw extruder is set as follows: a first area: 200 ℃; and a second zone: 220 ℃; and (3) three zones: 220-220 ℃; and (4) four areas: 240 ℃; and a fifth zone: 250 ℃; a sixth zone: 250 ℃; seven areas: 250 ℃; and eight regions: 260 ℃; head temperature: 250 ℃; the rotating speed of the screw is controlled within 200-400 r/min.
5. The PET/PBT blend modified fiber according to claim 4, wherein:
in the first step, the drying temperature is 120 ℃, and the drying time is 12 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910710533.1A CN110318121B (en) | 2019-08-02 | 2019-08-02 | PET/PBT blending modified fiber |
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|---|---|---|---|
| CN201910710533.1A CN110318121B (en) | 2019-08-02 | 2019-08-02 | PET/PBT blending modified fiber |
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| CN110318121B true CN110318121B (en) | 2022-03-29 |
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| TW317577B (en) * | 1995-01-25 | 1997-10-11 | Toray Industries | |
| KR101214385B1 (en) * | 2010-05-24 | 2012-12-21 | 한국조폐공사 | Fiber for prevention counterfeiting and manufacturing method thereof |
| CN102040808B (en) * | 2010-12-15 | 2012-08-22 | 深圳市富恒塑胶新材料有限公司 | Glass fiber enhanced PET/PBT (Polyethylene Terephthalate)/(Polybutylene Terephthalate) alloy with high glossiness and low warping degree and preparation method thereof |
| KR101398971B1 (en) * | 2013-07-19 | 2014-05-27 | 주식회사 케이닉스공사 | Coated film with high-hydrophilic and ir shield characteristic, and preparing method thereof |
| KR101794157B1 (en) * | 2015-10-23 | 2017-11-06 | (주)켐텍스코리아 | hydrophilic modification agent of polyester fiber for dyeing process and a method therefor |
| CN106884224A (en) * | 2017-03-21 | 2017-06-23 | 福建经纬新纤科技实业有限公司 | A kind of PET/PBT blending and modifyings fiber |
| CN108193303B (en) * | 2017-11-06 | 2021-02-02 | 中纺院（天津）科技发展有限公司 | Hydrophilic polyester fiber and preparation method thereof |
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