CN113308758A - 8tex colored polyester staple fiber spinning recovery regeneration process method - Google Patents
8tex colored polyester staple fiber spinning recovery regeneration process method Download PDFInfo
- Publication number
- CN113308758A CN113308758A CN202110782973.5A CN202110782973A CN113308758A CN 113308758 A CN113308758 A CN 113308758A CN 202110782973 A CN202110782973 A CN 202110782973A CN 113308758 A CN113308758 A CN 113308758A
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- Prior art keywords
- polyester
- waste
- polyester staple
- staple fiber
- spinning
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- 229920000728 polyester Polymers 0.000 title claims abstract description 107
- 239000000835 fiber Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009987 spinning Methods 0.000 title claims abstract description 27
- 230000008929 regeneration Effects 0.000 title abstract description 7
- 238000011069 regeneration method Methods 0.000 title abstract description 7
- 238000011084 recovery Methods 0.000 title abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 45
- 239000002699 waste material Substances 0.000 claims abstract description 42
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000002791 soaking Methods 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012153 distilled water Substances 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 238000005562 fading Methods 0.000 claims abstract description 5
- 239000011259 mixed solution Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 8
- 230000001172 regenerating effect Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000002040 relaxant effect Effects 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000002085 irritant Substances 0.000 abstract description 2
- 231100000021 irritant Toxicity 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a spinning recovery regeneration process method of 8tex colored polyester staple fibers, which comprises the following steps of pretreatment in early stage, soaking colored polyester staple fiber waste and waste polyester bottle chips in ethyl ether for 1-2 hours, then placing the soaked colored polyester staple fiber waste and the waste polyester bottle chips in a constant-temperature water bath kettle again, boiling the soaked colored polyester staple fiber waste and the waste polyester bottle chips by using distilled water, drying the washed polyester staple fiber waste after boiling the polyester staple fiber waste for 1-2 hours, performing fading treatment, placing the washed polyester staple fiber waste into a mixed solution containing thiourea dioxide and sodium hydroxide, and stirring and soaking the polyester staple fiber waste for 1-2 hours at a constant speed to obtain the waste polyester staple fibers. According to the invention, the waste polyester short fibers are cleaned by the ether and the distilled water, so that oil agents and stains in the waste short fibers can be effectively removed, the yield of the regenerated polyester short fibers is improved, the dyed polyester short fibers are faded by using the non-toxic and non-irritant thiourea dioxide and the low-concentration sodium hydroxide, the polyester short fibers can be faded on the premise of not damaging the polyester short fibers, the whole process flow is simple, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of polyester regeneration, in particular to a spinning, recycling and regenerating process method of 8tex colored polyester staple fibers.
Background
Polyester fiber, commonly known as "dacron", is a synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol, referred to as PET fiber for short, and belongs to a high molecular compound, and the polyester fiber is invented in 1941 and is the first major variety of the current synthetic fiber, and the polyester fiber has the greatest advantages of good crease resistance and shape retention, high strength and elastic recovery capability, firmness and durability, crease resistance, no ironing, no hair sticking and the like.
At the in-process of production polyester fiber spinning, the production that has the polyester fiber waste material is inevitable, to the discarded polyester bottle piece of retrieving back simultaneously, need regenerate polyester fiber waste material and discarded polyester bottle piece, reaches waste utilization's effect, improves the environmental protection, but, based on prior art, the inevitable has the finish in the discarded polyester fiber, if untimely handles the finish, leads to the polyester fiber defective percentage after regeneration to be higher.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a spinning, recycling and regenerating process method of 8tex colored polyester staple fibers.
The invention provides a 8tex colored polyester staple fiber spinning recovery regeneration process method, which comprises the following steps:
s1: pre-treating, namely soaking the colored polyester short fiber waste and the waste polyester bottle chips in diethyl ether for 1-2h, then placing the soaked product in a constant-temperature water bath kettle again, boiling the product with distilled water for 1-2h, and drying the product;
s2: performing color fading treatment, namely putting the cleaned polyester short fiber waste into a mixed solution containing thiourea dioxide and sodium hydroxide, and stirring and soaking at a constant speed for 1-2 hours to obtain waste polyester short fibers;
s3: crushing, namely putting the waste polyester staple fibers and the waste polyester bottle flakes into a crusher together for crushing to obtain a polyester mixture;
s4: granulating, namely putting the polyester mixture into a screw extruder, melting the polyester mixture at 260 ℃, then granulating, and drying the granulated polyester to obtain regenerated polyester granules;
s5: spinning, namely putting the regenerated polyester granules into a spinning machine for spinning to obtain regenerated polyester fiber yarns;
s6: and (3) drafting and shaping, namely drafting and relaxing the regenerated polyester fiber yarn for heat shaping to obtain 8tex regenerated polyester staple fiber yarn.
Preferably, the device for soaking the diethyl ether in the S1 is a reaction kettle, the concentration of the diethyl ether is 10%, and the soaking temperature is 20 ℃.
Preferably, the mass ratio of the sodium hydroxide to the water in the sodium hydroxide solution in the S2 is 1:1000, and the soaking temperature is 20-25 ℃.
Preferably, the drying device in S4 is a vacuum drying oven, and the drying conditions are as follows: the pressure in the box is-0.4 MPa to-0.8 MPa, the temperature is 80 ℃ to 90 ℃, and the drying time is 1.5 h to 2 h.
The invention has the beneficial effects that:
according to the invention, the waste polyester short fibers are cleaned by the ether and the distilled water, so that oil agents and stains in the waste short fibers can be effectively removed, the yield of the regenerated polyester short fibers is improved, the dyed polyester short fibers are faded by using the non-toxic and non-irritant thiourea dioxide and the low-concentration sodium hydroxide, the polyester short fibers can be faded on the premise of not damaging the polyester short fibers, the whole process flow is simple, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic flow structure diagram of a 8tex colored polyester staple fiber spinning recovery regeneration process method provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1: referring to fig. 1, a spinning, recycling and regenerating process method of 8tex colored polyester staple fibers comprises the following steps:
s1: pre-treating, namely, soaking the colored polyester short fiber waste and the waste polyester bottle chips in diethyl ether for 1-2 hours, then, placing the materials in a constant-temperature water bath kettle again, boiling the materials in distilled water for 1-2 hours, and then, drying the materials, wherein the diethyl ether soaking device is a reaction kettle, the concentration of the diethyl ether is 10%, and the soaking temperature is 20 ℃;
s2: performing color fading treatment, namely putting the cleaned polyester short fiber waste into a mixed solution containing thiourea dioxide and sodium hydroxide, stirring at a constant speed and soaking for 1-2 hours to obtain waste polyester short fibers, wherein the mass ratio of sodium hydroxide to water in the sodium hydroxide solution is 1:1000, and the soaking temperature is 20-25 ℃;
s3: crushing, namely putting the waste polyester staple fibers and the waste polyester bottle flakes into a crusher together for crushing to obtain a polyester mixture;
s4: and (2) granulating, namely putting the polyester mixture into a screw extruder, melting the polyester mixture at 260 ℃, then granulating, drying the granulated polyester to obtain regenerated polyester granules, wherein the drying device is a vacuum drying oven, and the drying conditions are as follows: the pressure in the box is-0.4 MPa to-0.8 MPa, the temperature is 80 ℃, and the drying time is 1.5 to 2 hours;
s5: spinning, namely putting the regenerated polyester granules into a spinning machine for spinning to obtain regenerated polyester fiber yarns;
s6: and (3) drafting and shaping, namely drafting and relaxing the regenerated polyester fiber yarn for heat shaping to obtain 8tex regenerated polyester staple fiber yarn.
Example 2: referring to fig. 1, a spinning, recycling and regenerating process method of 8tex colored polyester staple fibers comprises the following steps:
s1: pre-treating, namely, soaking the colored polyester short fiber waste and the waste polyester bottle chips in diethyl ether for 1-2 hours, then, placing the materials in a constant-temperature water bath kettle again, boiling the materials in distilled water for 1-2 hours, and then, drying the materials, wherein the diethyl ether soaking device is a reaction kettle, the concentration of the diethyl ether is 10%, and the soaking temperature is 20 ℃;
s2: performing color fading treatment, namely putting the cleaned polyester short fiber waste into a mixed solution containing thiourea dioxide and sodium hydroxide, stirring at a constant speed and soaking for 1-2 hours to obtain waste polyester short fibers, wherein the mass ratio of sodium hydroxide to water in the sodium hydroxide solution is 1:1000, and the soaking temperature is 20-25 ℃;
s3: crushing, namely putting the waste polyester staple fibers and the waste polyester bottle flakes into a crusher together for crushing to obtain a polyester mixture;
s4: and (2) granulating, namely putting the polyester mixture into a screw extruder, melting the polyester mixture at 260 ℃, then granulating, drying the granulated polyester to obtain regenerated polyester granules, wherein the drying device is a vacuum drying oven, and the drying conditions are as follows: the pressure in the box is-0.4 MPa to-0.8 MPa, the temperature is 90 ℃, and the drying time is 1.5 to 2 hours;
s5: spinning, namely putting the regenerated polyester granules into a spinning machine for spinning to obtain regenerated polyester fiber yarns;
s6: and (3) drafting and shaping, namely drafting and relaxing the regenerated polyester fiber yarn for heat shaping to obtain 8tex regenerated polyester staple fiber yarn.
The regenerated polyester staple fibers prepared were evaluated by the tensile property test method for chemical fiber staple fibers, and the fiber strength in example 1 was 3.76cN/dtex, the elongation at break was 26.3%, and the fiber strength in example 2 was 3.83cN/dtex, the elongation at break was 27.4%, so that example 2 was the most preferable example in the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The 8tex colored polyester short fiber spinning, recovering and regenerating process method is characterized by comprising the following steps of:
s1: pre-treating, namely soaking the colored polyester short fiber waste and the waste polyester bottle chips in diethyl ether for 1-2h, then placing the soaked product in a constant-temperature water bath kettle again, boiling the product with distilled water for 1-2h, and drying the product;
s2: performing color fading treatment, namely putting the cleaned polyester short fiber waste into a mixed solution containing thiourea dioxide and sodium hydroxide, and stirring and soaking at a constant speed for 1-2 hours to obtain waste polyester short fibers;
s3: crushing, namely putting the waste polyester staple fibers and the waste polyester bottle flakes into a crusher together for crushing to obtain a polyester mixture;
s4: granulating, namely putting the polyester mixture into a screw extruder, melting the polyester mixture at 260 ℃, then granulating, and drying the granulated polyester to obtain regenerated polyester granules;
s5: spinning, namely putting the regenerated polyester granules into a spinning machine for spinning to obtain regenerated polyester fiber yarns;
s6: and (3) drafting and shaping, namely drafting and relaxing the regenerated polyester fiber yarn for heat shaping to obtain 8tex regenerated polyester staple fiber yarn.
2. The spinning, recycling and regenerating process method of 8tex colored polyester staple fibers as claimed in claim 1, characterized in that the soaking device of the ethyl ether in the S1 is a reaction kettle, the concentration of the ethyl ether is 10%, and the soaking temperature is 20 ℃.
3. The spinning, recycling and regenerating process method of 8tex colored polyester staple fibers as claimed in claim 1, characterized in that the mass ratio of sodium hydroxide to water in the sodium hydroxide solution in S2 is 1:1000, and the soaking temperature is 20-25 ℃.
4. The 8tex colored polyester staple fiber spinning, recycling and regenerating process method as claimed in claim 1, characterized in that the drying device in S4 is a vacuum drying oven, and the drying conditions are as follows: the pressure in the box is-0.4 MPa to-0.8 MPa, the temperature is 80 ℃ to 90 ℃, and the drying time is 1.5 h to 2 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110782973.5A CN113308758A (en) | 2021-07-12 | 2021-07-12 | 8tex colored polyester staple fiber spinning recovery regeneration process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110782973.5A CN113308758A (en) | 2021-07-12 | 2021-07-12 | 8tex colored polyester staple fiber spinning recovery regeneration process method |
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| Publication Number | Publication Date |
|---|---|
| CN113308758A true CN113308758A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110782973.5A Pending CN113308758A (en) | 2021-07-12 | 2021-07-12 | 8tex colored polyester staple fiber spinning recovery regeneration process method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195968A (en) * | 2007-12-13 | 2008-06-11 | 常熟理工学院 | High temperature dyeing and printing colour stripping process method for dacron |
| CN101591852A (en) * | 2009-07-01 | 2009-12-02 | 安徽农业大学 | But the process method for finishing functions of recycled polyester automobile trim materials |
| CN102505182A (en) * | 2011-09-28 | 2012-06-20 | 南京工业职业技术学院 | Method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips |
| CN102828276A (en) * | 2012-09-04 | 2012-12-19 | 福建鑫华股份有限公司 | Preparation method of biodegradable regenerated polyester staple fibers |
| CN103422182A (en) * | 2013-08-19 | 2013-12-04 | 大连恒源纤维科技有限公司 | Regenerated polyester short-cut fiber |
| CN105350097A (en) * | 2015-09-30 | 2016-02-24 | 海盐海利环保纤维有限公司 | Method for producing ultra-coarse denier flat recycled polyester filaments by the use of recycled polyester bottle flakes |
| CN106400174A (en) * | 2015-07-30 | 2017-02-15 | 仪征威英化纤有限公司 | Method for producing regenerated coarse-denier colored polyester short fibers through raw liquid coloring |
| CN106835310A (en) * | 2017-03-24 | 2017-06-13 | 湖北泰峰实业有限公司 | A kind of Regenerated Polyester Staple Fiber dimension and preparation method thereof |
-
2021
- 2021-07-12 CN CN202110782973.5A patent/CN113308758A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195968A (en) * | 2007-12-13 | 2008-06-11 | 常熟理工学院 | High temperature dyeing and printing colour stripping process method for dacron |
| CN101591852A (en) * | 2009-07-01 | 2009-12-02 | 安徽农业大学 | But the process method for finishing functions of recycled polyester automobile trim materials |
| CN102505182A (en) * | 2011-09-28 | 2012-06-20 | 南京工业职业技术学院 | Method for preparing functional ultraviolet-resistant polyester staple fiber from waste renewable polyester bottle chips |
| CN102828276A (en) * | 2012-09-04 | 2012-12-19 | 福建鑫华股份有限公司 | Preparation method of biodegradable regenerated polyester staple fibers |
| CN103422182A (en) * | 2013-08-19 | 2013-12-04 | 大连恒源纤维科技有限公司 | Regenerated polyester short-cut fiber |
| CN106400174A (en) * | 2015-07-30 | 2017-02-15 | 仪征威英化纤有限公司 | Method for producing regenerated coarse-denier colored polyester short fibers through raw liquid coloring |
| CN105350097A (en) * | 2015-09-30 | 2016-02-24 | 海盐海利环保纤维有限公司 | Method for producing ultra-coarse denier flat recycled polyester filaments by the use of recycled polyester bottle flakes |
| CN106835310A (en) * | 2017-03-24 | 2017-06-13 | 湖北泰峰实业有限公司 | A kind of Regenerated Polyester Staple Fiber dimension and preparation method thereof |
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Application publication date: 20210827 |