Method for preparing optothermal responding short fiber by using recycled polyester bottle chips

Abstract

The invention discloses a method for preparing optothermal responding short fiber by using recycled polyester bottle chips and belongs to the field of chemical fiber production. The method comprises the steps of drying optothermal responding masterbatch and recycled polyester bottle chips, mixing, carrying out screw melt extrusion on a mixture to obtain a melt, and performing filtering, melt spinning, cool-forming, coiling and oiling, drafting and feeding, receiving and barrel charging, bundling, drafting, oiling, yarn pilling, coiling, thermal setting and cutting to obtain the optothermal responding short fiber. The optothermal responding short fiber is prepared through optothermal responding masterbatch and recycled polyester bottle chip mixing and melt spinning, the preparation method is reasonable, highly operable and easy to industrially implement, the prepared optothermal responding short fiber is used mainly in textile products such as automobile trims, casement fabric and decorative fabric and has the excellent functions such as near-infrared and visible light absorption, heat accumulation and discharge, and temperature adjustment.

Description

technical field

[0001] The invention relates to a functional regenerated polyester fiber, in particular to a method for preparing photothermal response short fibers from regenerated polyester bottle flakes, and belongs to the field of resource regeneration and the field of chemical fiber technology manufacturing. Background technique

[0002] With the improvement of people's living standards, functional textiles have become a necessity in daily life, and their application fields are becoming more and more extensive.

[0003] A fiber with infrared absorption function, its preparation method and textile patent technology are disclosed in the Chinese patent database. The patent application number: CN201010239057.9; application date: 2010-07-27; publication number: CN102337603A, publication date : 2012-02-01, the fiber with infrared absorption function includes a fiber body and powder with infrared absorption function dispersed in the fiber body. Blend the powder with the funct...

Examples

Embodiment 1

[0019] A method for preparing photothermally responsive staple fibers from recycled polyester bottle flakes, which uses photothermally responsive masterbatches and recycled polyester bottle flakes as raw materials, undergoes pretreatment, drum drying, melt spinning, cooling molding, and winding Oiling, drawing, crimping, heat setting, cutting and other processes to obtain photothermal responsive short fibers; specifically include the following steps:

[0020] 1) Pretreatment of recycled polyester bottle flakes; recycled polyester bottle flakes are processed from waste PET bottle materials. During pretreatment, recycled polyester bottle flakes are sorted, crushed, cleaned and dried. Drying means cleaning Clean recycled polyester bottle flakes are put into the vacuum drum dryer, and steam or heat transfer oil with a pressure of 0.3-0.6 MPa is introduced into the drum jacket, and the temperature is kept at 130 ° C. At the same time, the vacuum pump is started to vacuum, and the va...

Embodiment 2

[0027] A method for preparing photothermally responsive staple fibers from recycled polyester bottle flakes, characterized in that it comprises the following steps:

[0028] 1) Pretreatment of recycled PET bottle flakes; including sorting, crushing, cleaning and drying of raw materials; when drying, put the cleaned raw materials into a vacuum drum dryer, and pass them into the drum jacket Steam or heat transfer oil, while rotating the drum, the temperature is kept at 160°C, and the vacuum is pumped by a vacuum pump, the vacuum degree is kept at 0.1MPa, and the drying time is 8 hours.

[0029] 2) Dry the photothermal response masterbatch; the drying treatment is to put the photothermal response masterbatch into a sealed silo with dry hot air, keep the temperature at 140°C, and dry for 10 hours. The photothermal response masterbatch contains 15% by weight photothermal response additive and 85% by weight recycled polyester bottle flakes. The photothermal response additive is comp...

Embodiment 3

[0034] A method for preparing photothermally responsive staple fibers from recycled polyester bottle flakes, characterized in that it comprises the following steps:

[0035] 1) Pretreatment of recycled PET bottle flakes; including sorting, crushing, cleaning and drying of raw materials; when drying, put the cleaned raw materials into a vacuum drum dryer, and pass them into the drum jacket Steam or heat-conducting oil, while rotating the drum, the temperature is kept at 145°C, and the vacuum is evacuated by a vacuum pump, the vacuum degree is kept at 0.08MPa, and the drying time is 10 hours.

[0036] 2) Dry the photothermal response masterbatch; the drying treatment is to put the photothermal response masterbatch into a sealed silo with dry hot air, keep the temperature at 130°C, and dry for 10 hours. The photothermal response masterbatch contains 10% by weight photothermal response additive and 90% by weight recycled polyester bottle flakes. The photothermal response additive ...

technical field

[0001] The invention relates to a functional regenerated polyester fiber, in particular to a method for preparing photothermal response short fibers from regenerated polyester bottle flakes, and belongs to the field of resource regeneration and the field of chemical fiber technology manufacturing. Background technique

[0002] With the improvement of people's living standards, functional textiles have become a necessity in daily life, and their application fields are becoming more and more extensive.

[0003] A fiber with infrared absorption function, its preparation method and textile patent technology are disclosed in the Chinese patent database. The patent application number: CN201010239057.9; application date: 2010-07-27; publication number: CN102337603A, publication date : 2012-02-01, the fiber with infrared absorption function includes a fiber body and powder with infrared absorption function dispersed in the fiber body. Blend the powder with the funct...

Examples

Embodiment 1

[0019] A method for preparing photothermally responsive staple fibers from recycled polyester bottle flakes, which uses photothermally responsive masterbatches and recycled polyester bottle flakes as raw materials, undergoes pretreatment, drum drying, melt spinning, cooling molding, and winding Oiling, drawing, crimping, heat setting, cutting and other processes to obtain photothermal responsive short fibers; specifically include the following steps:

[0020] 1) Pretreatment of recycled polyester bottle flakes; recycled polyester bottle flakes are processed from waste PET bottle materials. During pretreatment, recycled polyester bottle flakes are sorted, crushed, cleaned and dried. Drying means cleaning Clean recycled polyester bottle flakes are put into the vacuum drum dryer, and steam or heat transfer oil with a pressure of 0.3-0.6 MPa is introduced into the drum jacket, and the temperature is kept at 130 ° C. At the same time, the vacuum pump is started to vacuum, and the va...

Embodiment 2

[0027] A method for preparing photothermally responsive staple fibers from recycled polyester bottle flakes, characterized in that it comprises the following steps:

[0028] 1) Pretreatment of recycled PET bottle flakes; including sorting, crushing, cleaning and drying of raw materials; when drying, put the cleaned raw materials into a vacuum drum dryer, and pass them into the drum jacket Steam or heat transfer oil, while rotating the drum, the temperature is kept at 160°C, and the vacuum is pumped by a vacuum pump, the vacuum degree is kept at 0.1MPa, and the drying time is 8 hours.

[0029] 2) Dry the photothermal response masterbatch; the drying treatment is to put the photothermal response masterbatch into a sealed silo with dry hot air, keep the temperature at 140°C, and dry for 10 hours. The photothermal response masterbatch contains 15% by weight photothermal response additive and 85% by weight recycled polyester bottle flakes. The photothermal response additive is comp...

Embodiment 3

[0034] A method for preparing photothermally responsive staple fibers from recycled polyester bottle flakes, characterized in that it comprises the following steps:

[0035] 1) Pretreatment of recycled PET bottle flakes; including sorting, crushing, cleaning and drying of raw materials; when drying, put the cleaned raw materials into a vacuum drum dryer, and pass them into the drum jacket Steam or heat-conducting oil, while rotating the drum, the temperature is kept at 145°C, and the vacuum is evacuated by a vacuum pump, the vacuum degree is kept at 0.08MPa, and the drying time is 10 hours.

[0036] 2) Dry the photothermal response masterbatch; the drying treatment is to put the photothermal response masterbatch into a sealed silo with dry hot air, keep the temperature at 130°C, and dry for 10 hours. The photothermal response masterbatch contains 10% by weight photothermal response additive and 90% by weight recycled polyester bottle flakes. The photothermal response additive ...