A method for preparing polyester fabric capable of accelerating degradation
By adding degraded masterbatches and low-melting polyester to polyester fabrics and forming porous and honeycomb-like fabrics, the problem of difficult degradation of existing polyester fabrics is solved, and the accelerated degradation of the fabrics and a more green and environmentally friendly effect is achieved.
Patent Information
- Application Number
- CN202210090581.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-01-26
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2042-01-26
AI Technical Summary
Existing polyester fabrics are difficult to degrade, resulting in huge pressure on the environment by abandoned fabrics.
Add 1.5-2 wt% degradation masterbatch to the polyester slices, and blend the low-melting point polyester slices with the polyester slices with the degradation masterbatches in a specific proportion to form island polyester staple fiber yarns, and form a honeycomb-like fabric blank by knitting, and dissolve the low-melting point polyester in the subsequent process to form a porous structure.
By increasing the pore structure and honeycomb structure of the fiber, the specific surface area and moisture absorption capacity of the fiber are increased, and bacteria are attracted to the fiber, which accelerates the degradation rate of the fabric and achieves the effect of accelerated degradation.
Smart Images
Figure CN116536838B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of polyester fabrics, in particular to a method for preparing polyester fabrics capable of accelerating degradation. Background Art
[0002] Existing polyester is a synthetic fiber obtained by spinning polyester formed by the condensation of organic dibasic acids and diols. It has been widely used in fabrics for daily life. Correspondingly, more and more discarded polyester fabrics are being discarded. Since petroleum-based chemical fibers are difficult to degrade, too much discarded polyester fabrics are causing tremendous pressure on the environment. Summary of the invention
[0003] In view of the problem that polyester fabrics are difficult to degrade, the present invention provides a method for preparing polyester fabrics capable of accelerating degradation, which can accelerate the degradation of polyester fabrics and is more environmentally friendly.
[0004] The technical scheme is as follows: a method for preparing a polyester fabric capable of accelerated degradation, characterized in that: 1.5-2wt% of degradation masterbatch is added to polyester polyester chips, low-melting point polyester chips and polyester polyester chips added with degradation masterbatch are blended and spun according to a mass ratio of (2-3): (7-8), and after preparation processes including cutting, opening, and combing, sea-island polyester staple yarn is obtained, and the obtained sea-island polyester staple yarn is knitted into a fabric blank with a honeycomb structure, and after processes including dissolving, dyeing, and shaping the low-melting point polyester, a polyester fabric capable of accelerated degradation is obtained.
[0005] It is further characterized by:
[0006] When knitting, the fabric is knitted by an upper needle disk with two needle tracks and a lower needle cylinder with four needle tracks, and a cycle is formed by 6 wales and 16 rows. In the 1st and 2nd wales, the 1st, 3rd, 5th, 7th, 9th, 11th, 13th, and 15th are upper needle loops, and the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th are upper needle floating threads; in the 3rd wale, the 1st and 3rd wales are lower needle tucking loops, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th wales are lower needle loops, and the 5th, 7th, 9th, 11th, 13th, and 15th wales are lower needle floating threads; in the 4th wale, the 1st, 3rd, 7th, The 9th, 11th and 13th rows are floating stitches for lower needles, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th rows are loop stitches for lower needles, and the 5th and 15th rows are tucking stitches for lower needles; in the 5th wale, the 1st, 3rd, 5th, 9th, 11th and 15th rows are floating stitches for lower needles, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th rows are loop stitches for lower needles, and the 7th and 13th rows are tucking stitches for lower needles; in the 6th wale, the 1st, 3rd, 5th, 7th, 13th and 15th rows are floating stitches for lower needles, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th rows are loop stitches for lower needles, and the 9th and 11th rows are tucking stitches for lower needles;
[0007] The melting point of the low melting point polyester is 110-180°C;
[0008] When the low melting point polyester is dissolved, the fabric blank is placed in a sodium hydroxide solution and heated.
[0009] The beneficial effects of the present invention are as follows: the fabric blank is knitted from sea-island polyester staple yarn, which is obtained by blending and spinning low-melting polyester chips and polyester chips added with degradation masterbatch. Through the subsequent low-melting polyester dissolution operation, the low-melting polyester can be dissolved, so that the fiber forms multiple pores and the specific surface area is increased. At the same time, the honeycomb structure of the fabric blank can gather moisture and attract bacteria to the fiber. The porous structure of the fiber allows the contact area between the bacteria and the fiber to be larger, thereby accelerating the decomposition rate of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a triangular diagram of the fabric of the present invention, wherein “-” represents floating thread, “∨” represents upper needle looping, “∧” represents lower needle looping, and “∩” represents lower needle tucking. DETAILED DESCRIPTION
[0011] A method for preparing a polyester fabric capable of accelerated degradation comprises the following steps: adding 1.5-2wt% of a degradation masterbatch (TDS201 purchased from SBS group) to a polyester polyester slice, blending and spinning a low-melting-point polyester slice with a melting point of 110-180°C and a polyester polyester slice added with the degradation masterbatch in a mass ratio of (2-3):(7-8), preparing sea island polyester staple yarn through preparation steps including cutting, opening and carding, knitting the prepared sea island polyester staple yarn into a fabric blank with a honeycomb structure, and preparing the polyester fabric capable of accelerated degradation through steps including dissolving, dyeing and shaping the low-melting-point polyester.
[0012] Combination Figure 1As shown in the figure, when knitting, the fabric is knitted by an upper needle disk with two needle tracks and a lower needle cylinder with four needle tracks, and a cycle is formed by 6 wales and 16 rows, wherein in the 1st and 2nd wales, the 1st, 3rd, 5th, 7th, 9th, 11th, 13th, and 15th are upper needle loops, and the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th are upper needle floating threads; in the 3rd wale, the 1st and 3rd wales are lower needle tucking loops, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th wales are lower needle loops, and the 5th, 7th, 9th, 11th, 13th, and 15th wales are lower needle floating threads; in the 4th wale, the 1st, 3rd, 7th, 9th, 11th The 1st, 2nd, 3rd, 4th, 6th, 8th, 10th, 12th, 14th and 16th are for the lower needle to form a circle, and the 5th and 15th are for the lower needle to form a circle; in the 5th vertical row, the 1st, 3rd, 5th, 9th, 11th and 15th are for the lower needle to float, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th are for the lower needle to form a circle, and the 7th and 13th are for the lower needle to form a circle; in the 6th vertical row, the 1st, 3rd, 5th, 7th, 13th and 15th are for the lower needle to float, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th are for the lower needle to form a circle, and the 9th and 11th are for the lower needle to form a circle, thus forming a honeycomb structure.
[0013] When dissolving the low-melting point polyester, the fabric blank is placed in a sodium hydroxide solution with a mass fraction of 1% and heated to 100 degrees Celsius for 70 minutes. After the low-melting point polyester in the fiber is dissolved, the fiber can form a porous structure.
[0014] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A method for preparing polyester fabric capable of accelerating degradation, characterized in that: 1.5-2wt% of a degradation masterbatch is added to a polyester polyester slice, low-melting point polyester slice and the polyester polyester slice added with the degradation masterbatch are blended and spun according to a mass ratio of (2-3):(7-8), and after a preparation process including cutting, opening, and carding, sea island polyester staple yarn is obtained, and the obtained sea island polyester staple yarn is knitted into a fabric blank with a honeycomb structure, and after a process including dissolving the low-melting point polyester, dyeing, and shaping, a polyester fabric capable of accelerated degradation is obtained; When knitting, the fabric is knitted by an upper needle disk with two needle tracks and a lower needle cylinder with four needle tracks, and a cycle is formed by 6 wales and 16 rows. In the 1st and 2nd wales, the 1st, 3rd, 5th, 7th, 9th, 11th, 13th, and 15th are upper needle loops, and the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th are upper needle floating threads; in the 3rd wale, the 1st and 3rd wales are lower needle tucking loops, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th wales are lower needle loops, and the 5th, 7th, 9th, 11th, 13th, and 15th wales are lower needle floating threads; in the 4th wale, the 1st, 3rd, 7th, The 9th, 11th and 13th rows are floating stitches for lower needles, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th rows are loop stitches for lower needles, and the 5th and 15th rows are tucking stitches for lower needles; in the 5th wale, the 1st, 3rd, 5th, 9th, 11th and 15th rows are floating stitches for lower needles, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th rows are loop stitches for lower needles, and the 7th and 13th rows are tucking stitches for lower needles; in the 6th wale, the 1st, 3rd, 5th, 7th, 13th and 15th rows are floating stitches for lower needles, the 2nd, 4th, 6th, 8th, 10th, 12th, 14th and 16th rows are loop stitches for lower needles, and the 9th and 11th rows are tucking stitches for lower needles; The melting point of the low melting point polyester is 110-180°C.
2. The method for preparing a polyester fabric capable of accelerated degradation according to claim 1, characterized in that: When the low melting point polyester is dissolved, the fabric blank is placed in a sodium hydroxide solution and heated.
Citation Information
Patent Citations
Multi-micropore polyester fiber and preparation method thereof
CN101144206A
Porous photocatalytic fiber and preparation method thereof
CN107326468A
Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof
TW587110B
Production process of fast biodegradable porous polyester fiber
WO2021208191A1