CN103643343A - Preparation method of cation regeneration and coloring polyester staple fibers - Google Patents

Abstract

The invention discloses a preparation method of cation regeneration and coloring polyester staple fibers, comprising the following steps: (1) mixing and reacting ethanol with carboxylic acid to obtain an esterified product, wherein the reaction temperature is 235-240 DEG C; (2) mixing and copolymerizing 150 parts by mass of esterified product, 1,200 parts by mass of regenerated PET (polyethylene terephthalate) sheet, 5 parts by mass of trimonomer dimethyl isophthalate-5-sodium sulfonate and 15-20 parts by mass of color master batch to form a copolymer, wherein the temperature of copolymerization is 290 DEG C and the vacuum degree is 60 Pa; (3) enabling the copolymer at 260 DEG C to pass through a filter screen and removing impurities; (4) carrying out crystallization, namely crystallizing the copolymer, in which the impurities are removed, by a crystallization box to form a semicoagulated high-molecular polymer, wherein the temperature of the crystallization box is 290 DEG C and the pressure is 25 MPa; and (5) spinning. The preparation method disclosed by the invention has the advantages that the preparation method of the cation regeneration and coloring polyester staple fibers is provided, the waste polyester staple fibers are fully utilized and the cation regeneration and coloring polyester staple fibers with bright color and good lustrousness can be obtained without subsequent dyeing.

Description

The regenerate preparation method of painted polyester staple fiber of CATION

Technical field

The present invention relates to the regenerate preparation method of painted polyester staple fiber of CATION.

Background technology

Traditional terylene short fiber production technology is in ordinary polyester polyester raw material, to add Masterbatch to carry out blending; form colorful coloured polyester staple; but the color of coloured polyester staple is not bright-coloured; must under high-temperature and high-pressure conditions, by DISPERSE DYES, could realize deep dyed color; but under high-temperature and high-pressure conditions, be linked to the Se Mu functional group easy fracture on macromolecular chain; reduce Color, also can consume a large amount of electric power, artificial, large to the pressure of environmental protection.

Summary of the invention

The object of the present invention is to provide the regenerate preparation method of painted polyester staple fiber of a kind of CATION, it makes full use of waste and old terylene staple fibre, without can obtain painted CATION bright-coloured, that glossiness the is good painted polyester staple fiber of regenerating by follow-up printing and dyeing.

For achieving the above object, technical scheme of the present invention is the regenerate preparation method of painted polyester staple fiber of a kind of CATION of design, comprises the steps:

1) by ethanol and carboxylic acid hybrid reaction, obtain carboxylate, the temperature of reaction is 235～240 ℃;

2) PET sheet material, 5 parts by mass three monomer dimethyl isophthalate～5～sodium sulfonates, 15～20 parts by mass Masterbatch mixing copolyreaction of 150 parts by mass carboxylates and the regeneration of 1200 parts by mass are formed to copolymer; The temperature conditions of described copolyreaction is 290 ℃, and vacuum is 60Pa;

3) copolymer of 260 ℃ is crossed to 300 mesh filter screens, remove impurity;

4) crystallization: will go deimpurity copolymer through the crystallization of crystallization case, and form the high molecular polymer partly solidifying; The temperature of crystallization case is that 290 ℃, pressure are 25MPa;

5) spinning: the high molecular polymer partly solidifying is passed through to the spinnerets of 270 ℃, at pressure, be that 45MPa extruder, spinning speed are that 1500 ms/min, hauling speed are to extrude under 1300 ms/min of conditions, by coiling, add spinning oil again, make Regenerated Polyester Staple Fiber dimension.

Advantage of the present invention and beneficial effect are: the preparation method who provides a kind of CATION to regenerate painted polyester staple fiber, it makes full use of waste and old terylene staple fibre, without can obtain painted CATION bright-coloured, that glossiness the is good painted polyester staple fiber of regenerating by follow-up printing and dyeing.

The specific embodiment

Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.

The concrete technical scheme of implementing of the present invention is:

Embodiment 1

The regenerate preparation method of painted polyester staple fiber of CATION, comprises the steps:

1) by ethanol and carboxylic acid hybrid reaction, obtain carboxylate, the temperature of reaction is 235 ℃;

2) PET sheet material, 5 parts by mass three monomer dimethyl isophthalate～5～sodium sulfonates, the 15 parts by mass Masterbatch mixing copolyreaction of 150 parts by mass carboxylates and the regeneration of 1200 parts by mass are formed to copolymer; The temperature conditions of described copolyreaction is 290 ℃, and vacuum is 60Pa;

3) copolymer of 260 ℃ is crossed to 300 mesh filter screens, remove impurity;

4) crystallization: will go deimpurity copolymer through the crystallization of crystallization case, and form the high molecular polymer partly solidifying; The temperature of crystallization case is that 290 ℃, pressure are 25MPa;

5) spinning: the high molecular polymer partly solidifying is passed through to the spinnerets of 270 ℃, at pressure, be that 45MPa extruder, spinning speed are that 1500 ms/min, hauling speed are to extrude under 1300 ms/min of conditions, by coiling, add spinning oil again, make Regenerated Polyester Staple Fiber dimension.

Embodiment 2

The regenerate preparation method of painted polyester staple fiber of CATION, comprises the steps:

1) by ethanol and carboxylic acid hybrid reaction, obtain carboxylate, the temperature of reaction is 240 ℃;

2) PET sheet material, 5 parts by mass three monomer dimethyl isophthalate～5～sodium sulfonates, the 20 parts by mass Masterbatch mixing copolyreaction of 150 parts by mass carboxylates and the regeneration of 1200 parts by mass are formed to copolymer; The temperature conditions of described copolyreaction is 290 ℃, and vacuum is 60Pa;

3) copolymer of 260 ℃ is crossed to 300 mesh filter screens, remove impurity;

4) crystallization: will go deimpurity copolymer through the crystallization of crystallization case, and form the high molecular polymer partly solidifying; The temperature of crystallization case is that 290 ℃, pressure are 25MPa;

5) spinning: the high molecular polymer partly solidifying is passed through to the spinnerets of 270 ℃, at pressure, be that 45MPa extruder, spinning speed are that 1500 ms/min, hauling speed are to extrude under 1300 ms/min of conditions, by coiling, add spinning oil again, make Regenerated Polyester Staple Fiber dimension.

Embodiment 3

The regenerate preparation method of painted polyester staple fiber of CATION, comprises the steps:

1) by ethanol and carboxylic acid hybrid reaction, obtain carboxylate, the temperature of reaction is 239 ℃;

2) PET sheet material, 5 parts by mass three monomer dimethyl isophthalate～5～sodium sulfonates, the 18 parts by mass Masterbatch mixing copolyreaction of 150 parts by mass carboxylates and the regeneration of 1200 parts by mass are formed to copolymer; The temperature conditions of described copolyreaction is 290 ℃, and vacuum is 60Pa;

3) copolymer of 260 ℃ is crossed to 300 mesh filter screens, remove impurity;

4) crystallization: will go deimpurity copolymer through the crystallization of crystallization case, and form the high molecular polymer partly solidifying; The temperature of crystallization case is that 290 ℃, pressure are 25MPa;

5) spinning: the high molecular polymer partly solidifying is passed through to the spinnerets of 270 ℃, at pressure, be that 45MPa extruder, spinning speed are that 1500 ms/min, hauling speed are to extrude under 1300 ms/min of conditions, by coiling, add spinning oil again, make Regenerated Polyester Staple Fiber dimension.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (1)

1. the CATION preparation method of painted polyester staple fiber that regenerates, is characterized in that, comprises the steps:

1) by ethanol and carboxylic acid hybrid reaction, obtain carboxylate, the temperature of reaction is 235～240 ℃;

2) PET sheet material, 5 parts by mass three monomer dimethyl isophthalate～5～sodium sulfonates, 15～20 parts by mass Masterbatch mixing copolyreaction of 150 parts by mass carboxylates and the regeneration of 1200 parts by mass are formed to copolymer; The temperature conditions of described copolyreaction is 290 ℃, and vacuum is 60Pa;

3) copolymer of 260 ℃ is crossed to 300 mesh filter screens, remove impurity;

4) crystallization: will go deimpurity copolymer through the crystallization of crystallization case, and form the high molecular polymer partly solidifying; The temperature of crystallization case is that 290 ℃, pressure are 25MPa;

5) spinning: the high molecular polymer partly solidifying is passed through to the spinnerets of 270 ℃, at pressure, be that 45MPa extruder, spinning speed are that 1500 ms/min, hauling speed are to extrude under 1300 ms/min of conditions, by coiling, add spinning oil again, make Regenerated Polyester Staple Fiber dimension.