CN103665425A - Method for preparing recycled polyester high-purity synthetic particle - Google Patents
Method for preparing recycled polyester high-purity synthetic particle Download PDFInfo
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- CN103665425A CN103665425A CN201310671180.1A CN201310671180A CN103665425A CN 103665425 A CN103665425 A CN 103665425A CN 201310671180 A CN201310671180 A CN 201310671180A CN 103665425 A CN103665425 A CN 103665425A
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- Prior art keywords
- recycled polyester
- high purity
- compound particle
- supplementary material
- purity compound
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention relates to a method for preparing recycled polyester high-purity synthetic particle. The method comprises the following steps: firstly, selecting recycled polyester raw materials, drying the materials, melting and extruding the recycled polyester raw materials through a double-screw extruder, putting in a viscosity increasing reaction kettle to carry out viscosity increasing reaction, filtering out small-particle impurities in the high viscosity melt after the reaction through a melt filter and carrying out underwater cooling and pelletizing to obtain the recycled polyester high-purity synthetic particle. The method disclosed by the invention has the advantages that the phenomena such as filament break and filament ossification in fore-spinning process of fiber can be reduced and the fiber finished product quality is increased, so that the production cost is saved and the purposes of low carbon and environmental protection are realized; when being used for spinning recycled multifunctional polyester staple fiber products, the recycled polyester high-purity synthetic particle produced by adopting the method is capable of reducing the phenomena such as the filament break and the filament ossification and in the fore-spinning process of fiber and increasing the quality index of fiber finished products; in the meantime, the method disclosed by the invention is capable of effectively utilizing various recycled chemical fibers and textile wastes, so that the cost is reduced and the purposes of comprehensive utilization of resources and more environmental protection are realized.
Description
Technical field
The present invention relates to a kind of preparation method of compound particle, be specifically related to a kind of preparation method of recycled polyester high purity compound particle.
Background technology
At present the most domestic chemical fiber factory of generally regenerating is all the regeneration chemical fibre with regeneration foam material direct production all size, because regenerative raw materials source is complicated, viscosity differences is larger, impurity content is different simultaneously, and small molecules impurity content is many, in actual spinning process, have a strong impact on the quality product of regeneration chemical fibre, therefore the staple fibre physical index that terylene foam material produces is in the market poor, quality is extremely unstable, can only be used for the not high civilian low grade products of production requirement, as being used for, make cotton-wadded quilt, sofa, the weighting material of the home textile products such as mattress and civilian carpet, the products such as clothes down-like.And the manufacturer of some regenrated slices often adopts single screw extrusion machine, the compound particle quality of producing is stable not, and purity is even not, whole production process is not effectively utilized waste material simultaneously, not only waste resource, increased cost, nor enough environmental protection.In addition, the regenerated terylene foam material purity adopting during present most enterprises producd fibers is not high enough, easily produces the phenomenons such as fracture of wire, stiff silk in the fore-spinning of fiber, affects the quality index of fibrous finished product as fault number, feel, number of crimp, crimp percentage etc.
Summary of the invention
Object of the present invention provides a kind of preparation method of recycled polyester high purity compound particle, and this preparation method can reduce the phenomenons such as the fracture of wire in the fore-spinning of fiber, stiff silk, and the quality of raising fibrous finished product, both saved production cost, again low-carbon environment-friendly.
The object of the invention is to be achieved through the following technical solutions, a kind of preparation method of recycled polyester high purity compound particle, comprises the following steps:
(1) supplementary material is selected: the regenerated terylene foam material that supplementary material is manufactured from the tankage of the waste silk in chemical fiber factory production process, chemical fibre nonwoven and textile garment fabric, waste and old apparel textile;
(2) dry materials: supplementary material step (1) Suo Shu is put in rotary drum, by steam heating, thereby vacuumize with vacuum pump the moisture content of removing in supplementary material more afterwards, the product vacuumizing after processing carries out drying treatment, vacuumize with drying treatment after supplementary material water content lower than 0.02%;
(3) extrude, tackify, filtration: water content is extruded through twin screw extruder lower than 0.02% supplementary material; Product introduction reactor after extruding carries out the reaction of polymerization tackify, makes high viscosity recycled polyester melt; High viscosity recycled polyester melt is through fondant filter, to filter out small molecular weight impurity particle;
(4) cooling, cut-out: the recycled polyester melt after filtration is by being cooled to room temperature under water; Cooled recycled polyester melt is cut into column form object, obtain recycled polyester high purity compound particle.
Further, the per-cent that in supplementary material, impurity accounts for supplementary material total mass in step (1) is less than 2/10000ths
,supplementary material limiting viscosity is 0.55 ~ 0.7dl/g.
Further, described in step (2), steam-heated Heating temperature is 158 ~ 162 ℃.
Further, the time that described in step (2), vacuum pump vacuumizes is 6 ~ 8 hours.
Further, the screw diameter of the described twin-screw extruder of step (3) is φ 120mm, and in extrusion process, the temperature of each crush zone of twin-screw extruder is 268 ~ 285 ℃.
Further, the temperature of the described reactor of step (3) is 285-290 ℃, and reaction pressure is 70-120Pa, and the reaction times is 40-80min.
Further, the pressure of the described fondant filter of step (3) is 3-4MPa.
Compared with prior art, the present invention has following beneficial effect:
The first, raw material is impurity content lower than 2/10000ths, limiting viscosity is in the regenerated terylene foam material of the shades of colour kind of 0.55 ~ 0.7dl/g, selects qualified raw material, when guaranteeing compound particle quality, has saved also environmental protection more of production cost;
The second, in dry materials process, steam-heated temperature is 158 ~ 162 ℃, and the time that vacuum pump vacuumizes is 6 ~ 8 hours, makes water content lower than 0.02%; In twin-screw extruder extrusion process, the model of twin-screw extruder is φ 120, and in working process, the temperature in each district of twin-screw extruder is 268 ~ 285 ℃, adopts twin-screw extrusion function to obtain better dispersion effect, and extrudate is more even; The temperature of reactor is controlled at 285-290 ℃, and reaction pressure is between 70-120Pa, and the reaction times is controlled at 40-80min; The pressure of fondant filter is arranged on 3-4MPa; By cooling and dicing under water, make the high purity compound particle that meets quality standard, can improve significantly the quality of the multi-functional polyester staple fiber finished product of regeneration of all size, recycled polyester high purity compound particle quality standard is as follows:
1, the particle diameter specifications control of compound particle is at 30 ± 5 grams/piece;
2, the size-grade distribution 99 ± 0.5% of compound particle;
3, moisture control is 0.1 ± 0.05%;
4, limiting viscosity control indexes is at 0.75 ± 0.05 η;
The 3rd, the recycled polyester high purity compound particle that the present invention produces is for spinning the multi-functional polyester staple fiber product of regeneration, can reduce the phenomenons such as the fracture of wire in the fore-spinning of fiber, stiff silk, the quality index of raising fibrous finished product is as fault number, feel, number of crimp, crimp percentage etc.;
The 4th, the present invention can effectively utilize all kinds of regeneration chemical fibres and waste textile waste material, thereby reduces costs, comprehensive utilization of resources, and environmental protection more, meets the circular economy industrial policy of national comprehensive utilization of resources.
Accompanying drawing explanation
Fig. 1 is the preparation method's of recycled polyester high purity compound particle of the present invention process flow sheet.
Embodiment
A preparation method for high purity compound particle, comprises the following steps:
Step 1: supplementary material is selected, raw material packet contains with the waste silk in chemical fiber factory production process, the tankage of chemical fibre nonwoven, textile garment fabric manufacturing enterprise, the regenerated terylene foam material of the shades of colour kind that waste and old apparel textile etc. is manufactured;
Step 2: dry materials, the regenerated terylene foam material of these shades of colour kinds is put into after rotary drum by steam heating, thereby with vacuum pump, vacuumized and remove moisture content more afterwards, and dry;
Step 3: dry regenerative raw materials after qualified is extruded through twin screw extruder, enters polymerization tackify reactor and carries out tackify reaction, makes full-bodied regeneration melt, then through fondant filter, filter out small molecular weight impurity particle and enter next procedure;
Step 4: the recycled polyester melt that filtered of reaction is by being cooled to room temperature under water, and cut off column form object, obtain required high purity compound particle.
Embodiment 1:
Material choice impurity content lower than 2/10000ths, limiting viscosity is in the recycled polyester terylene foam material of 0.55dl/g; After putting this material into rotary drum, use steam heating, steam-heated temperature is 158 ℃, thereby vacuumize 8 hours with vacuum pump more afterwards, removes moisture content, makes raw material water content not higher than 0.02%; After supplementary material is dry, by twin screw extruder, is pushed and formed column form object and extrude, the model of twin-screw extruder is φ 120, and in working process, the temperature in each district of twin-screw extruder is 268 ~ 285 ℃; Be cooled to normal temperature under water and cut off and make required high purity compound particle.This particle mass index is after testing: particle diameter: 31.6 grams/piece; Granularity: 99.2%; Water ratio: 0.14%; Viscosity: 0.71 η.
Embodiment 2:
Material choice impurity content lower than 2/10000ths, limiting viscosity is in the recycled polyester terylene foam material of 0.60dl/g; After putting this material into rotary drum, use steam heating, steam-heated temperature is 158 ℃, thereby vacuumize 8 hours with vacuum pump more afterwards, removes moisture content, makes raw material water content not higher than 0.02%; After supplementary material is dry, by twin screw extruder, is pushed and formed column form object and extrude, the model of twin-screw extruder is φ 120, and in working process, the temperature in each district of twin-screw extruder is 268 ~ 285 ℃; Be cooled to normal temperature under water and cut off and make required high purity compound particle.This particle mass index is after testing: particle diameter: 29.8 grams/piece; Granularity: 98.8%; Water ratio: 0.17%; Viscosity: 0.76 η.
Embodiment 3:
Material choice impurity content lower than 2/10000ths, limiting viscosity is in the recycled polyester terylene foam material of 0.65dl/g; After putting this material into rotary drum, use steam heating, steam-heated temperature is 158 ℃, thereby vacuumize 8 hours with vacuum pump more afterwards, removes moisture content, makes raw material water content not higher than 0.02%; After supplementary material is dry, by twin screw extruder, is pushed and formed column form object and extrude, the model of twin-screw extruder is φ 120, and in working process, the temperature in each district of twin-screw extruder is 268 ~ 285 ℃; Be cooled to normal temperature under water and cut off and make required high purity compound particle.This particle mass index is after testing: particle diameter: 30.8 grams/piece; Granularity: 99.6%; Water ratio: 0.18%; Viscosity: 0.79 η.
Raw material is impurity content lower than 2/10000ths, limiting viscosity is in the regenerated terylene foam material of the shades of colour kind of 0.55 ~ 0.7dl/g, selects qualified raw material, when guaranteeing compound particle quality, has saved also environmental protection more of production cost.
In dry materials process, steam-heated temperature is 158 ~ 162 ℃, and the time that vacuum pump vacuumizes is 6 ~ 8 hours, makes water content lower than 0.02%; In twin-screw extruder extrusion process, the model of twin-screw extruder is φ 120, and in working process, the temperature in each district of twin-screw extruder is 268 ~ 285 ℃, adopts twin-screw extrusion function to obtain better dispersion effect, and extrudate is more even; The temperature of reactor is controlled at 285-290 ℃, and reaction pressure is between 70-120Pa, and the reaction times is controlled at 40-80min; The pressure of fondant filter is arranged on 3-4MPa; By cooling and dicing under water, make the high purity compound particle that meets quality standard, by the design of above-mentioned processing parameter, can improve significantly the multi-functional polyester staple fiber final product quality of regeneration of all size.
The recycled polyester high purity compound particle that the present invention produces, be used for spinning the multi-functional polyester staple fiber product of regeneration, can reduce the phenomenons such as the fracture of wire in the fore-spinning of fiber, stiff silk, the quality index of raising fibrous finished product is as fault number, feel, number of crimp, crimp percentage etc.;
The present invention can effectively utilize all kinds of regeneration chemical fibres and waste textile waste material, thereby reduces costs, comprehensive utilization of resources, and environmental protection more, meets the circular economy industrial policy of national comprehensive utilization of resources.
Claims (7)
1. a preparation method for recycled polyester high purity compound particle, is characterized in that, comprises the following steps:
(1) supplementary material is selected: the regenerated terylene foam material that supplementary material is manufactured from the tankage of the waste silk in chemical fiber factory production process, chemical fibre nonwoven and textile garment fabric, waste and old apparel textile;
(2) dry materials: supplementary material step (1) Suo Shu is put in rotary drum, by steam heating, thereby vacuumize with vacuum pump the moisture content of removing in supplementary material more afterwards, the product vacuumizing after processing carries out drying treatment, vacuumize with drying treatment after supplementary material water content lower than 0.02%;
(3) extrude, tackify, filtration: water content is extruded through twin screw extruder lower than 0.02% supplementary material; Product introduction reactor after extruding carries out the reaction of polymerization tackify, makes high viscosity recycled polyester melt; High viscosity recycled polyester melt is through fondant filter, to filter out small molecular weight impurity particle;
(4) cooling, cut-out: the recycled polyester melt after filtration is by being cooled to room temperature under water; Cooled recycled polyester melt is cut into column form object, obtain recycled polyester high purity compound particle.
2. the preparation method of recycled polyester high purity compound particle according to claim 1, is characterized in that, the per-cent that in supplementary material, impurity accounts for supplementary material total mass in step (1) is less than 2/10000ths
,supplementary material limiting viscosity is 0.55-0.7dl/g.
3. the preparation method of recycled polyester high purity compound particle according to claim 1, is characterized in that, described in step (2), steam-heated Heating temperature is 158-162 ℃.
4. the preparation method of recycled polyester high purity compound particle according to claim 1, is characterized in that, the time that described in step (2), vacuum pump vacuumizes is 6-8 hour.
5. the preparation method of recycled polyester high purity compound particle according to claim 1, is characterized in that, the screw diameter of the described twin-screw extruder of step (3) is φ 120mm, and in extrusion process, the temperature of each crush zone of twin-screw extruder is 268-285 ℃.
6. the preparation method of recycled polyester high purity compound particle according to claim 1, is characterized in that, the temperature of the described reactor of step (3) is 285-290 ℃, and reaction pressure is 70-120Pa, and the reaction times is 40-80min.
7. the preparation method of recycled polyester high purity compound particle according to claim 1, is characterized in that, the pressure of the described fondant filter of step (3) is 3-4MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310671180.1A CN103665425A (en) | 2013-12-12 | 2013-12-12 | Method for preparing recycled polyester high-purity synthetic particle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310671180.1A CN103665425A (en) | 2013-12-12 | 2013-12-12 | Method for preparing recycled polyester high-purity synthetic particle |
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| CN103665425A true CN103665425A (en) | 2014-03-26 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803585A (en) * | 2016-03-31 | 2016-07-27 | 浙江绿宇环保有限公司 | Polyester-containing waste textile recycling technology |
| CN105862180A (en) * | 2016-03-31 | 2016-08-17 | 浙江绿宇环保有限公司 | Energy conservation process for recycling polyester-containing waste textiles |
| CN110552085A (en) * | 2018-05-30 | 2019-12-10 | 陈大伟 | polyester waste cloth and waste silk recycling system and recycling method thereof |
| CN110964181A (en) * | 2019-11-27 | 2020-04-07 | 仪征威英化纤有限公司 | Tackifying device for regenerated polyester melt and production method of regenerated fiber |
| EP3835347A1 (en) * | 2019-12-13 | 2021-06-16 | Tai Su Energy Technology Co., Ltd. | A device to increase intrinsic viscosity of recycling polyester waste |
| EP3835346A1 (en) * | 2019-12-13 | 2021-06-16 | Tai Su Energy Technology Co., Ltd. | A method to increase intrinsic viscosity of recycling polyester waste |
| CN113001809A (en) * | 2021-02-19 | 2021-06-22 | 浙江华欣新材料股份有限公司 | Waste silk regeneration device system and implementation method |
| JP2022171521A (en) * | 2021-04-29 | 2022-11-11 | 南亞塑膠工業股▲分▼有限公司 | Method for forming polyester material from recycled film |
-
2013
- 2013-12-12 CN CN201310671180.1A patent/CN103665425A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803585A (en) * | 2016-03-31 | 2016-07-27 | 浙江绿宇环保有限公司 | Polyester-containing waste textile recycling technology |
| CN105862180A (en) * | 2016-03-31 | 2016-08-17 | 浙江绿宇环保有限公司 | Energy conservation process for recycling polyester-containing waste textiles |
| CN110552085A (en) * | 2018-05-30 | 2019-12-10 | 陈大伟 | polyester waste cloth and waste silk recycling system and recycling method thereof |
| CN110964181A (en) * | 2019-11-27 | 2020-04-07 | 仪征威英化纤有限公司 | Tackifying device for regenerated polyester melt and production method of regenerated fiber |
| EP3835347A1 (en) * | 2019-12-13 | 2021-06-16 | Tai Su Energy Technology Co., Ltd. | A device to increase intrinsic viscosity of recycling polyester waste |
| EP3835346A1 (en) * | 2019-12-13 | 2021-06-16 | Tai Su Energy Technology Co., Ltd. | A method to increase intrinsic viscosity of recycling polyester waste |
| CN113001809A (en) * | 2021-02-19 | 2021-06-22 | 浙江华欣新材料股份有限公司 | Waste silk regeneration device system and implementation method |
| JP2022171521A (en) * | 2021-04-29 | 2022-11-11 | 南亞塑膠工業股▲分▼有限公司 | Method for forming polyester material from recycled film |
| US11613622B2 (en) | 2021-04-29 | 2023-03-28 | Nan Ya Plastics Corporation | Method for forming polyester material from recycled film |
| JP7270007B2 (en) | 2021-04-29 | 2023-05-09 | 南亞塑膠工業股▲分▼有限公司 | Method for forming polyester material from recycled film |
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