CN113417041A

CN113417041A - Elasticated CEY fiber and production process thereof

Info

Publication number: CN113417041A
Application number: CN202110706219.3A
Authority: CN
Inventors: 庞秀英; 沈冬方; 周远柳
Original assignee: Hangzhou Huifeng Chemical Fiber Co ltd
Current assignee: Hangzhou Huifeng Chemical Fiber Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-09-21
Anticipated expiration: 2041-06-24
Also published as: CN113417041B

Abstract

The application relates to the technical field of elastic composite fibers, and particularly discloses an elasticated CEY fiber and a production process thereof. An elasticated CEY fiber is mainly prepared from SSY protofilament and POY protofilament with the mass ratio of (1-4) to 1; the POY protofilament is mainly prepared from the following raw materials in parts by weight: 100 portions of polyester-containing material 130 portions, 3 portions to 5 portions of nano titanium dioxide and 2.5 portions to 6 portions of polyamide. The elastic CEY fiber can be used for producing high-grade clothing fabrics and has the advantages of good elastic property and stable size.

Description

Elasticated CEY fiber and production process thereof

Technical Field

The application relates to the technical field of elastic composite fibers, in particular to an elasticated CEY fiber and a production process thereof.

Background

The CEY fiber is a composite yarn, which is usually formed by compounding polyester fiber and SSY elastic fiber through an elasticizing process, the yarn has strong elastic performance, and the manufactured fabric has unique style, soft hand feeling, good glossiness and good extensibility, and simultaneously the yarn also has certain drapability and is an excellent raw material for manufacturing high-grade underwear and western-style clothes.

With the increasingly fierce market competition of elastic composite fibers at home and abroad, the property of the CEY fiber needs to meet the requirement of higher and higher elasticity, and how to produce the CEY fiber with better elasticity is the key point of increasing attention of people.

Disclosure of Invention

In order to improve the elastic property of the CEY fiber, the application provides an elasticated CEY fiber and a production process thereof.

In a first aspect, the application provides an elasticated CEY fiber, which adopts the following technical scheme:

an elasticated CEY fiber is mainly prepared from SSY protofilament and POY protofilament with the mass ratio of (1-4) to 1;

the POY protofilament is mainly prepared from the following raw materials in parts by weight: 100 portions of polyester-containing material 130 portions, 3 portions to 5 portions of nano titanium dioxide and 2.5 portions to 6 portions of polyamide.

Through adopting above-mentioned technical scheme, the SSY precursor has fine elastic elongation and elastic recovery, and after the spinning with POY precursor complex, under low stress environment, POY keeps fibrous form, provides corresponding low stress elasticity to along with the continuous increase of fibre atress, the coiled structure of SSY precursor plays fine cushioning effect. In addition, the nano titanium dioxide and the polyamide are added into the POY precursor, the nano titanium dioxide can play a toughening role, and in addition, a large number of hydrogen bonds on a polyamide molecular chain can improve the orientation degree and the regular state of the molecular chain of the POY precursor, so that the POY precursor can play a good supporting and guiding synergistic effect on the SSY precursor, the elastic stability of the CEY fiber is improved, the POY precursor has better elastic performance, and fabrics and clothes with higher elastic requirements can be met.

Preferably, the POY precursor is mainly prepared from the following raw materials in parts by weight: 120 parts of polyester 110-one, 3.8-4.5 parts of nano titanium dioxide and 4-5 parts of polyamide.

By adopting the technical scheme, the proportion of the raw materials is optimized, and the proper proportion of the nano titanium dioxide and the polyamide is adjusted, so that the proportion of a crystalline region and an amorphous region of the POY protofilament is coordinated, the mobility of a molecular chain is increased, and the plasticity of the POY protofilament is improved.

Preferably, the nano titanium dioxide is modified by an amino hydrocarbyl silane coupling agent.

By adopting the technical scheme, the coating layer is formed on the surface of the nano titanium dioxide by the amino-hydrocarbon-based silane coupling agent modified nano titanium dioxide, the macromolecular chain segment of the amino-hydrocarbon-based silane coupling agent faces outwards and can be inserted into the molecular chain segment in the POY protofilament to form a cross-linked entangled structure, and the binding force between the nano titanium dioxide and the fiber is improved. And the coating formed by modifying the nano titanium dioxide by the amino-hydrocarbon silane coupling agent has lower surface energy, is easier to disperse, improves the plasticity and toughness of the POY protofilament, and does not have great influence on other mechanical properties of the POY protofilament.

Preferably, the preparation method of the POY precursor comprises the following steps:

1) drying the polyester until the water content is less than 800ppm, and then uniformly mixing the polyester, the nano titanium dioxide and the polyamide to prepare a mixture;

2) melting the mixture, and then sequentially carrying out the following steps: mixer, spinning box, cooling, oiling, screen device, winding.

By adopting the technical scheme, the polyester is dried firstly, so that the influence of moisture on the spinning melt is reduced, the raw materials are fully mixed, the dispersion uniformity of the raw materials is improved, the probability of waste silk is reduced, and finally the POY precursor with stable and uniform quality is prepared.

Preferably, in the winding step of step 2), the winding speed is 2300-2650 m/min.

By adopting the technical scheme, the POY protofilament produced at the winding speed has better breaking strength and lower uneven fiber evenness, and the phenomena of broken filaments and broken ends of the POY protofilament in the subsequent processing process are reduced. In addition, the POY yarn is relatively stable in spinning state and uniform in quality at the above winding speed.

Preferably, in the oiling procedure in the step 2), the amount of oil added is 0.33-0.36 wt%.

By adopting the technical scheme, the bundling property of the POY protofilament can be improved after oiling, and the sites of broken filaments and entanglement in subsequent processing are reduced. In addition, the lubricating property and the antistatic property of the POY protofilament can be improved, the probability of adhesion between the POY protofilament and the SSY protofilament and the probability of adhesion between the POY protofilament and the SSY protofilament are reduced, and the elastic uniformity of the CEY fiber is improved.

Preferably, in the raw material of the POY precursor, the mass ratio of the nano titanium dioxide to the polyamide is (0.8-1.9): 1.

By adopting the technical scheme, the softness and drapability of the POY protofilament can be further improved by adding the titanium dioxide and the polyamide according to the proportion, and the POY protofilament has an ultraviolet resistance function. In addition, the nano titanium dioxide can play a certain nucleating role, and the toughness and plasticity of the POY protofilament are further improved under the auxiliary cooperation of the polyamide.

In a second aspect, the application provides a production process of an elasticated CEY fiber, which adopts the following technical scheme:

a production process of an elasticated CEY fiber comprises the following steps:

s1: feeding the SSY protofilament into a roller R1 after passing through a filament cutter, then heating, then passing through a deformation hot box W1, and cooling to obtain SSY semi-finished filament;

s2: feeding the POY protofilament into a roller R2 after passing through a filament cutter, then heating, then passing through a deformation hot box W2, and cooling to obtain SSY semi-finished filament;

s3: and (3) plying the SSY semi-finished yarn and the POY semi-finished yarn, feeding the plied yarns into a mesh device, and then winding to obtain the elasticated CEY fiber.

Through adopting above-mentioned technical scheme, all pass through first roller, heating and deformation hot box with POY precursor and SSY precursor, promote the elasticity performance of POY precursor and SSY precursor, then merge together and enter into the mesh ware in, increase fibrous crimp contraction percentage, improve the cohesion between POY precursor and the SSY precursor, promote the dimensional stability of CEY fibre.

Preferably, the temperature of the deformation heat box W1 in the step S1 is 210-225 ℃, and the temperature of the deformation heat box W2 in the step S2 is 195-200 ℃.

By adopting the technical scheme, the respective deformation hot boxes of the SSY protofilament and the POY protofilament are controlled according to the temperature, so that the internal stress of the POY protofilament and the SSY protofilament can be well eliminated, the elasticity of the strength of the fiber is improved, and the crimp shrinkage rate and the crimp stability of the CEY fiber are further improved. In addition, at the temperature, the mutual slip capacity of the molecular chain segments of the POY protofilament and the SSY protofilament is enhanced, the plasticity is also improved, and the dimensional stability of the CEY fiber is also improved.

In summary, the present application has the following beneficial effects:

1. according to the method, the SSY protofilament and the POY protofilament are compounded and elasticized, and the prepared elasticized CEY fiber obtains better elasticity performance under the plasticizing and toughening effects of the polyamide and the nano titanium dioxide.

2. In the application, the nano titanium dioxide is modified by the amino-hydrocarbyl silane coupling agent, so that the toughness and plasticity of POY protofilaments are further improved, and the elasticity of CEY fibers is improved.

3. The temperature of a deformation hot box in the production process of the elasticated CEY fiber is controlled to be 210-225 ℃, so that the crimp shrinkage rate and the dimensional stability of the elasticated CEY fiber are further improved.

Drawings

FIG. 1 is a flow chart of a process for producing an elasticized CEY fiber according to the example of the present application.

Reference numerals: 1. an SSY stock; 2. POY raw silk frame; 3. roller R1; 4. a deformation heat box W1; 5. a heating roller; 6. a cooling plate; 7. roller R2; 8. a deformation heat box W2; 9. a setting hot box M1; 10. a setting hot box M2; 13. a grid; 14. winding; 15. a shredder.

Detailed Description

The present application will be described in further detail with reference to examples.

The elastic CEY fiber is mainly prepared from SSY protofilaments and POY protofilaments in a mass ratio of (1-4) to 1; the POY protofilament is mainly prepared from the following raw materials in parts by weight: 100 portions of polyester-containing material 130 portions, 3 portions to 5 portions of nano titanium dioxide and 2.5 portions to 6 portions of polyamide.

Preferably, the SSY strands have a gauge of 75-300D. More preferably, the SSY yarn has a specification of 75D, a shrinkage of 30%, and a breaking strength of 3.2 cN/dtex.

Preferably, the polyester is polyester chip, the intrinsic viscosity of the polyester chip is 0.55-0.68dl/g, the terminal carboxyl groups are 40mol/t, the melting point is 220 ℃, and the water content is 0.4%.

Preferably, the average particle size of the nano titanium dioxide is 10-30 nm. More preferably, the nano titanium dioxide has an average particle size of 20nm and a purity of 99.9%.

Preferably, the polyamide is PA6, the heat distortion temperature is 220 ℃ (0.45MPa load), the tensile modulus is 16000MPa, the elongation at break is 2.5%, and the density is 1.55g/cm³。

The application provides a method for modifying nano titanium dioxide by using an amino-hydrocarbon silane coupling agent, which comprises the following steps:

A. dissolving the amino-hydrocarbon silane coupling agent in an ethanol solution, and uniformly mixing to prepare a modified liquid, wherein the mass fraction of the amino-hydrocarbon silane coupling agent in the modified liquid is 10-20%;

B. adding the nano titanium dioxide into the modified liquid to react for 15min at the stirring speed of 1000rpm, and then filtering, washing and drying to obtain the nano titanium dioxide/amino-silane coupling agent in the modified liquid, wherein the mass ratio of the nano titanium dioxide to the amino-silane coupling agent in the modified liquid is 1: 0.2.

More preferably, the mass fraction of the aminoalkyl silane coupling agent in the modification liquid is 15%.

Preferably, the amino-hydrocarbyl silane coupling agent is at least one of gamma-aminopropyl triethoxysilane, gamma-anilinomethyl trimethoxysilane and gamma-ureido propyl triethoxysilane. Further preferably, the aminoalkyl silane coupling agent consists of gamma-aminopropyltriethoxysilane and gamma-ureidopropyltriethoxysilane in a mass ratio of (1-3) to (1-2.5).

The preparation method of the POY protofilament comprises the following steps:

The application provides a production process of an elasticated CEY fiber, which comprises the following steps:

s1: feeding the SSY protofilament into a roller R1 after passing through a filament cutter, heating by a hot roller, and then passing through a deformation hot box W1 and a cooling plate to prepare SSY semi-finished filament;

s2: feeding the POY protofilament into a roller R2 after passing through a filament cutter, heating by a hot roller, and then passing through a deformation hot box W2 and a cooling plate to prepare SSY semi-finished filament;

Preferably, the network degree of the grid in the step S3 is 18-23 n/m. Further preferably, the degree of meshing of the mesh in step S3 is 21 n/m.

The information on the main raw materials of the examples and comparative examples of the present application is shown in table 1.

TABLE 1 information on main raw materials of examples and comparative examples of the present application

Raw materials	Specification and model	Source manufacturer
			SSY protofilament	SSY-1	SHAOXING SYLON TEXTILE TECHNOLOGY Co.,Ltd.
Polyester chip	Industrial grade	SHAOXING SYLON TEXTILE TECHNOLOGY Co.,Ltd.
			Nano titanium dioxide	CW-TiO2-001	Shanghai Chaowei nanotechnologyLimited Co.
Polyamide	B3G50	Shenzhen plastic crown science and technology Co., Ltd
			Gamma-aminopropyltriethoxysilane	KH-550	Nanjing Yopu chemical Co Ltd
Gamma-anilinomethyltrimethoxysilane	Purity 95%	Hubei Koufole materials science and technology Limited
			Gamma-ureidopropyltriethoxysilane	UP-9061	Nanjing Yopu chemical Co Ltd

Examples

Example 1

The elastic CEY fiber of the present example is prepared from the following raw materials: SSY precursor, POY precursor; the mass ratio of the SSY protofilament to the POY protofilament is 1: 1.

The POY protofilament of the embodiment is prepared from the following raw materials in parts by weight: 100kg of polyester chips, 3kg of nano titanium dioxide and 2.5kg of polyamide.

Wherein the specification of the SSY protofilament is 75D, the shrinkage rate is 30 percent, the breaking strength is 3.2cN/dtex, and the manufacturer is Shaoxing Xineng textile science and technology Limited company. The intrinsic viscosity of the polyester chip is 0.55-0.68dl/g, the terminal carboxyl group is 40mol/t, the melting point is 220 ℃, the water content is 0.4 percent, and the manufacturer is Shaoxing xi neng textile science and technology limited company. The average grain diameter of the nano titanium dioxide is 20nm, the purity is 99.9 percent, and the manufacturer is Shanghai Chaowei nanometer science and technology limited.The polyamide is PA6, the heat distortion temperature is 220 ℃ (0.45MPa complex load), the tensile modulus is 16000MPa, the elongation at break is 2.5%, and the density is 1.55g/cm³The manufacturer is Shenzhen plastic crown technology Limited.

The preparation method of the POY protofilament comprises the following steps:

1) drying the polyester chips until the water content is less than 800ppm, and then uniformly mixing the polyester chips, the nano titanium dioxide and the polyamide to prepare a mixture;

2) melting the mixture at 280 ℃ to prepare a polyester melt, and then sequentially carrying out the following steps to prepare the polyester melt: the production process comprises the steps of mixing, spinning box, air blowing cooling, oiling, gridding and winding, wherein the temperature of the spinning box is 292 ℃, the oil feeding amount is 0.33 wt%, the air temperature of the air blowing cooling is 18 ℃, the network pressure of the gridding is 0.08MPa, the winding speed is 2300m/min, and the denier is 75D.

The process for producing the elasticized CEY fiber of the embodiment comprises the following steps (with reference to fig. 1):

s1: feeding the SSY protofilament into a roller R1 after passing through a filament cutter, heating to 190 ℃ through a hot roller, and then preparing an SSY semi-finished product filament through a deformation hot box W1, a shaping hot box M1 and a cooling plate, wherein the temperature of the deformation hot box W1 is 210 ℃, and the temperature of the shaping hot box M1 is 85 ℃;

s2: feeding the POY protofilament into a roller R2 after passing through a filament cutter, heating to 180 ℃ by a hot roller, and then preparing SSY semi-finished filament by a deformation hot box W2, a shaping hot box M2 and a cooling plate, wherein the temperature of the deformation hot box W2 is 195 ℃ and the temperature of the shaping hot box M2 is 80 ℃;

s3: and (3) plying and feeding the SSY semi-finished yarn and the POY semi-finished yarn into a gridding device, and then winding to obtain the elasticated CEY fiber, wherein the reticulation degree of the gridding device is 21n/m, the winding tension is 20cN, the winding overfeed rate is 3.5%, and the processing speed is 650 m/min.

Examples 2 to 5

The texturized CEY fibers of examples 2-5 were made from the following raw materials: SSY precursor, POY precursor, the mass ratio of SSY precursor to POY precursor is 1: 1.

The POY protofilament of the embodiment is prepared from the following raw materials in parts by weight: polyester chip, nano titanium dioxide and polyamide.

The amounts of raw materials added to POY filaments in examples 2 to 5 are shown in Table 2.

TABLE 2 raw material addition amounts of POY strands of examples 2 to 5

Raw materials (kg)	Example 1	Example 2	Example 3	Example 4	Example 5
						Polyester chip	100	120	115	110	130
Nano titanium dioxide	3	4.5	4.2	3.8	5
						Polyamide	2.5	5	4.5	2	6

The POY filaments of examples 2-5 were prepared in the same manner as in example 1.

The process for producing the textured CEY fibers of examples 2-5 was the same as in example 1.

Example 6

The texturized CEY fiber of this example differs from example 3 in that: the mass ratio of SSY strand to POY strand was 2:1, and the rest was the same as in example 3.

Wherein the denier of the SSY protofilament is 150D, and the manufacturer is Zhejiang ancient fiber channel GmbH.

The POY yarn of this example was prepared in the same manner as in example 3.

The process for producing the texturized CEY fiber of this example was the same as example 3.

Example 7

The texturized CEY fiber of this example differs from example 3 in that: the mass ratio of SSY strand to POY strand was 4:1, and the rest was the same as in example 3.

Wherein the denier of the SSY protofilament is 300D, and the manufacturer is Zhejiang ancient fiber channel GmbH.

The POY yarn of this example was prepared in the same manner as in example 3.

Example 8

The texturized CEY fiber of this example differs from example 6 in that: in the raw material of the POY precursor, the nano titanium dioxide was modified with an aminoalkyl silane coupling agent, and the rest was the same as in example 6.

The preparation method of the modified nano titanium dioxide with the amino-hydrocarbyl silane coupling agent comprises the following steps:

A. dissolving the amino-hydrocarbon silane coupling agent in an ethanol solution, and uniformly mixing to prepare a modified liquid, wherein the mass fraction of the amino-hydrocarbon silane coupling agent in the modified liquid is 15%;

Wherein the amino-hydrocarbyl silane coupling agent is gamma-aniline methyl trimethoxy silane, and the manufacturer is Hubei Koufule materials science and technology Limited, and the purity is 95%.

The POY yarn of this example was prepared in the same manner as in example 6.

The process for producing the texturized CEY fiber of this example was the same as example 6.

Example 9

The present embodiment is different from embodiment 8 in that: in the preparation method of the modified nano titanium dioxide by using the amino-hydrocarbyl silane coupling agent, the amino-hydrocarbyl silane coupling agent in the step A is composed of gamma-aminopropyl triethoxysilane and gamma-urea propyl triethoxysilane according to the mass ratio of 2: 1.8.

Wherein, the manufacturer of the gamma-aminopropyl triethoxysilane is Nanjing Yoypu chemical Co. The manufacturer of the gamma-urea propyl triethoxysilane is Nanjing Yoypu chemical Co.

The preparation method of the modified nano titanium dioxide by the amino-hydrocarbyl silane coupling agent in the embodiment is the same as that in the embodiment 8.

The POY yarn of this example was prepared in the same manner as in example 8.

The process for producing the textured CEY fiber of this example is the same as that of example 8.

Example 10

The texturized CEY fiber of this example differs from example 9 in that: the preparation method of the POY protofilament comprises the following steps:

2) melting the mixture at 280 ℃ to prepare a polyester melt, and then sequentially carrying out the following steps to prepare the polyester melt: the production process comprises the steps of mixing, spinning box, air blowing cooling, oiling, gridding and winding, wherein the temperature of the spinning box is 292 ℃, the oil feeding amount is 0.33 wt%, the air temperature of the air blowing cooling is 18 ℃, the network pressure of the gridding is 0.08MPa, the winding speed is 2500m/min, and the denier is 75D.

The preparation method of the modified nano titanium dioxide by the amino-hydrocarbyl silane coupling agent in the embodiment is the same as that in the embodiment 9.

The POY yarn of this example was prepared in the same manner as in example 9.

The process for producing the texturized CEY fiber of this example was the same as example 9.

Example 11

2) melting the mixture at 280 ℃ to prepare a polyester melt, and then sequentially carrying out the following steps to prepare the polyester melt: the production process comprises the steps of mixing, spinning box, air blowing cooling, oiling, gridding and winding, wherein the temperature of the spinning box is 292 ℃, the oil feeding amount is 0.33 wt%, the air temperature of the air blowing cooling is 18 ℃, the network pressure of the gridding is 0.08MPa, and the winding speed is 2650 m/min.

The POY yarn of this example was prepared in the same manner as in example 9.

Example 12

The textured CEY fiber of this example differs from example 10 in that: in the method for producing POY yarn, the amount of oil applied in step 2) was 0.35% by weight, and the rest was the same as in example 10.

The POY yarn of this example was prepared in the same manner as in example 10.

The process for producing the textured CEY fiber of this example is the same as that of example 10.

Example 13

The present embodiment is different from embodiment 10 in that: the textured CEY fiber of this example differs from example 10 in that: in the process for producing POY yarn, the amount of oil applied in step 2) was 0.36% by weight, and the rest was the same as in example 10.

The preparation method of the modified nano titanium dioxide by the amino-hydrocarbyl silane coupling agent in the embodiment is the same as that in the embodiment 10.

The POY yarn of this example was prepared in the same manner as in example 10.

Example 14

The present embodiment is different from embodiment 12 in that: the production process of the elasticated CEY fiber comprises the following steps (in combination with figure 1):

s1: feeding the SSY protofilament into a roller R1 after passing through a filament cutter, heating to 190 ℃ through a hot roller, and then preparing an SSY semi-finished product filament through a deformation hot box W1, a shaping hot box M1 and a cooling plate, wherein the temperature of the deformation hot box W1 is 218 ℃, and the temperature of the shaping hot box M1 is 85 ℃;

s2: feeding the POY protofilament into a roller R2 after passing through a filament cutter, heating to 180 ℃ by a hot roller, and then preparing SSY semi-finished filament by a deformation hot box W2, a shaping hot box M2 and a cooling plate, wherein the temperature of the deformation hot box W2 is 198 ℃, and the temperature of the shaping hot box M2 is 80 ℃;

The preparation method of the modified nano titanium dioxide by the amino-hydrocarbyl silane coupling agent in the embodiment is the same as that in the embodiment 12.

The POY yarn of this example was prepared in the same manner as in example 12.

Example 15

s1: feeding the SSY protofilament into a roller R1 after passing through a filament cutter, heating to 190 ℃ through a hot roller, and then preparing an SSY semi-finished product filament through a deformation hot box W1, a shaping hot box M1 and a cooling plate, wherein the temperature of the deformation hot box W1 is 225 ℃, and the temperature of the shaping hot box M1 is 85 ℃;

s2: feeding the POY protofilament into a roller R2 after passing through a filament cutter, heating to 180 ℃ by a hot roller, and then preparing SSY semi-finished filament by a deformation hot box W2, a shaping hot box M2 and a cooling plate, wherein the temperature of the deformation hot box W2 is 200 ℃, and the temperature of the shaping hot box M2 is 80 ℃;

The POY yarn of this example was prepared in the same manner as in example 12.

Comparative example

Comparative example 1

The texturized CEY fiber of this comparative example was made from the following raw materials: SSY precursor, POY precursor, the mass ratio of SSY precursor to POY precursor is 1: 1.

The POY precursor of the comparative example is prepared from the following raw materials in parts by weight: 100kg of polyester chips and 2.5kg of polyamide.

Wherein the specification of the SSY protofilament is 75D, the shrinkage rate is 30 percent, the breaking strength is 3.2cN/dtex, and the manufacturer is Shaoxing Xineng textile science and technology Limited company. The intrinsic viscosity of the polyester chip is 0.55-0.68dl/g, the terminal carboxyl group is 40mol/t, the melting point is 220 ℃, the water content is 0.4 percent, and the manufacturer is Shaoxing xi neng textile science and technology limited company. The polyamide is PA6, the heat distortion temperature is 220 ℃ (0.45MPa complex load), the tensile modulus is 16000MPa, the elongation at break is 2.5%, and the density is 1.55g/cm³The manufacturer is Shenzhen plasticCrown technologies, Inc.

The preparation method of the POY protofilament of the comparative example comprises the following steps:

1) drying the polyester chips until the water content is less than 800ppm, and then uniformly mixing the polyester chips and polyamide to prepare a mixture;

The process for producing the elasticized CEY fiber of the present comparative example comprises the following steps (with reference to fig. 1):

Comparative example 2

Wherein the specification of the SSY protofilament is 300D, and the manufacturer is Zhejiang ancient fiber channel GmbH. The POY protofilament has a specification of 300D, a product number of boat Ke, and a manufacturer of Taicang boat Ke textile Limited.

The process for making the texturized CEY fiber of this comparative example was the same as comparative example 1.

Performance test

Detection method

The elastic properties of the textured CEY fibers of examples 1 to 15 and comparative examples 1 to 2 were measured in accordance with GB/T6506-2001 synthetic fiber textured yarn crimp property test method and GB/T14344-2003 synthetic fiber filament tensile property test method, and the test results are shown in Table 3.

TABLE 3 elastic Performance test data for the elasticized CEY fibers of examples 1-15 and comparative examples 1-2

It can be seen from the analysis of examples 1 to 5 and comparative examples 1 to 2 and the combination of table 3 that the elastic properties of the elasticized CEY fiber are greatly improved after the POY and SSY filaments are thermally deformed, heat-set and mesh-wound, and under the synergistic effect of the nano titanium dioxide and the polyamide, the crimp shrinkage is over 39%, and the elongation at break is over 17%.

When examples 1 to 5, 6 and 7 were analyzed and table 3 was combined, it was found that the elastic properties of the elasticized CEY fiber were further improved by adjusting the mass ratio of the SSY yarn to the POY yarn to 2:1.

It can be seen from analysis examples 6 and 8-9 and table 3 that the nanosilica modified by the aminoalkyl silane coupling agent improves the toughness and plasticity of the POY precursor fiber, and the crimp shrinkage of the elastic CEY fiber reaches about 45%.

Analysis of examples 9, 10-11 and table 3 shows that the mechanical properties of the POY filaments are better at a winding speed of 2500m/min, which in turn improves the elastic properties of the elasticized CEY fibers.

It can be seen from the analysis of examples 12-13 and the combination of Table 3 that the mechanical properties of POY filaments are better when the oiling rate is controlled at 3.5 wt%, and the crimp shrinkage of the prepared elastic CEY fibers can reach 47%.

As can be seen from the analysis of examples 14 and 12 and the combination of table 3, in the production process of the elasticized CEY fiber, the elastic properties of the resultant elasticized CEY fiber were the best when the temperature of the draw box W2 for the POY strand was controlled to 198 ℃ and the temperature of the draw box W1 for the SSY strand was controlled to 218 ℃.

In summary, the elastic CEY fiber has excellent elastic performance, and is suitable for processing high-grade elastic fabrics and manufacturing high-grade underwear, western-style clothes and the like.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. An elasticated CEY fiber is characterized by being mainly prepared from SSY protofilament and POY protofilament in a mass ratio of (1-4) to 1;

2. The texturized CEY fiber of claim 1, wherein: the POY protofilament is mainly prepared from the following raw materials in parts by weight: 120 parts of polyester 110-one, 3.8-4.5 parts of nano titanium dioxide and 4-5 parts of polyamide.

3. An elasticized CEY fiber as claimed in claim 2, wherein: the nano titanium dioxide is modified by an amino-hydrocarbyl silane coupling agent.

4. An elasticized CEY fiber as claimed in claim 3, wherein: the preparation method of the POY precursor comprises the following steps:

5. An elasticized CEY fiber as claimed in claim 4, wherein: in the winding step of step 2), the winding speed is 2300-2650 m/min.

6. The texturized CEY fiber according to claim 5, wherein the oiling process in step 2) is carried out with an amount of oil ranging from 0.33 to 0.36 wt%.

7. An elasticized CEY fiber as claimed in claim 6, wherein: in the raw materials of the POY protofilament, the mass ratio of the nano titanium dioxide to the polyamide is (0.8-1.9) to 1.

8. A process for the production of an elasticized CEY fiber as claimed in any one of claims 1 to 7, wherein: the method comprises the following steps:

9. The process of claim 8, wherein the elastic CEY fiber is prepared by the following steps: the temperature of the deformation heat box W1 in the step S1 is 210-225 ℃, and the temperature of the deformation heat box W2 in the step S2 is 195-200 ℃.