CN113174650A

CN113174650A - Wear-resistant DTY and production process thereof

Info

Publication number: CN113174650A
Application number: CN202110647746.1A
Authority: CN
Inventors: 陈宇; 倪海锋
Original assignee: Hangzhou Honggang Chemical Fiber Co ltd
Current assignee: Hangzhou Honggang Chemical Fiber Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-07-27
Anticipated expiration: 2041-06-10
Also published as: CN113174650B

Abstract

The application relates to the technical field of DTY, and particularly discloses a wear-resistant DTY and a production process thereof. The wear-resistant DTY is mainly prepared from the following raw materials in parts by weight: 150 portions of polyester chips, 2 to 5 portions of wear-resistant agent, 5 to 10 portions of filler and 1 to 2 portions of whitening agent; the wear-resisting agent is composed of benzoxazine and polycarbonate according to the mass ratio of (1.5-3.5) to (12-15), and the filler is at least one of boron nitride, potassium titanate whisker and zinc oxide. The production process of the wear-resistant DTY comprises the following steps: s1: uniformly mixing the raw materials, metering, extruding, cooling, oiling and winding to obtain POY fiber; s2: the POY fiber is heated, false twisted, shaped, oiled and wound to prepare the wear-resistant DTY. The wear-resistant DTY can be used for producing wear-resistant fabrics and wear-resistant clothes and has the advantage of good wear resistance.

Description

Wear-resistant DTY and production process thereof

Technical Field

The application relates to the technical field of DTY, in particular to wear-resistant DTY and a production process thereof.

Background

The terylene low stretch yarn is named as Draw Texturing Yarn (DTY) and is a textured yarn type of terylene chemical fiber, which is prepared by using polyester chips as raw materials, spinning terylene pre-oriented yarns at high speed and then performing drafting and false twisting processing. The DTY has the characteristics of breaking strength, elastic modulus, heat resistance, light resistance, heat insulation and the like of common polyester yarns.

The DTY has certain wear resistance, and the manufactured clothes can be used for working clothes, operating clothes and the like. However, in some special application environments, such as work clothes and work clothes in industries such as industrial production, construction sites and the like, better wear resistance is required, and therefore, the wear resistance of the DTY needs to be improved.

Disclosure of Invention

In order to improve the wear resistance of the DTY, the application provides a wear-resistant DTY and a production process thereof.

In a first aspect, the present application provides a wear-resistant DTY, which adopts the following technical scheme:

a wear-resistant DTY is mainly prepared from the following raw materials in parts by weight: 150 portions of polyester chips, 2 to 5 portions of wear-resistant agent, 5 to 10 portions of filler and 1 to 2 portions of whitening agent; the wear-resisting agent is composed of benzoxazine and polycarbonate according to the mass ratio of (1.5-3.5) to (12-15), and the filler is at least one of boron nitride, potassium titanate whisker and zinc oxide.

By adopting the technical scheme, because the benzoxazine and the polycarbonate are adopted as the wear-resistant agent, the benzoxazine has a large amount of branched structures and a large amount of phenolic hydroxyl groups, and can form an entangled structure with a polyester molecular chain, so that the orientation degree of the wear-resistant DTY fiber is improved, and the surface hardness and the mechanical property of the DTY fiber are improved. In addition, boron nitride, potassium titanate whisker and zinc oxide in the filler can be dispersed, embedded and combined inside and outside the fiber, so that the effects of transferring stress and improving the bonding strength in the fiber are achieved. And, the filler still forms the wearing layer on the fibre surface, promotes the wear-resisting effect of fibre. In addition, the filler and the wear-resisting agent are compounded for use, the bonding force between the wear-resisting agent and the fibers can be improved by adding the potassium titanate whiskers, the strength of the wear-resisting layer is also improved, and the wear resistance of the wear-resisting DTY fiber is greatly improved through the synergistic effect between the wear-resisting agent and the filler.

Preferably, the wear-resistant DTY is mainly prepared from the following raw materials in parts by weight: 130-140 parts of polyester chip, 3-5 parts of wear-resistant agent, 6-8 parts of filler and 1-2 parts of whitening agent; the wear-resisting agent is composed of benzoxazine and polycarbonate according to the mass ratio of (1.5-3.5) to (12-15), and the filler is at least one of boron nitride and potassium titanate whisker.

By adopting the technical scheme, the proportion of the raw materials is optimized, so that the addition amount of the filler and the wear-resisting agent is proper, and the mechanical property and the wear resistance of the wear-resisting DTY fiber are balanced to obtain better product performance.

Preferably, the filler consists of one of boron nitride and zinc oxide and potassium titanate whisker in a mass ratio of (6-10) to (1.5-3).

By adopting the technical scheme, in the filler compounded according to the proportion, the excessive potassium titanate whiskers can provide a proper amount of active groups, so that the bonding force between the filler and the fibers is better, and the strength and the wear-resistant performance of the formed wear-resistant layer are better.

Preferably, the mass ratio of the filler to the anti-wear agent is (1.75-2.5): 1.

By adopting the technical scheme, the filler and the wear-resisting agent are compounded according to the proportion, the proportion of physical crosslinking and chemical crosslinking in the fiber is moderate, the acting force among the molecules of the raw materials is stronger, and the isotropy of the fiber is good.

Preferably, the potassium titanate whiskers are subjected to modification treatment by a fluorosilane coupling agent.

By adopting the technical scheme, after the potassium titanate whisker is modified by the fluorine silane coupling agent, on one hand, the reaction activity of the potassium titanate whisker is improved, and the wettability of the potassium titanate whisker in fibers is improved. On the other hand, the steric hindrance is improved by the macromolecular chain segment of the fluorosilane coupling agent, so that the potassium titanate whisker is not easy to agglomerate, the dispersibility in the fiber is better, the interface bonding with the fiber is better, and the wear resistance of the wear-resistant DTY is further improved.

Preferably, the fluorosilane coupling agent is at least one of trifluoropropyltriethoxysilane, trifluoropropyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane.

By adopting the technical scheme, the hydrophobicity of the potassium titanate whisker is further improved by the trifluoropropyltriethoxysilane, the trifluoropropyltrimethoxysilane and the heptadecafluorodecyltrimethoxysilane, and the dispersion uniformity is better.

Preferably, the raw material also comprises (0.8-1.5) parts by weight of erucamide.

By adopting the technical scheme, the erucamide can improve the boundary lubrication effect of the wear-resistant layer, reduce the friction coefficient of the wear-resistant DTY fiber and further improve the wear resistance of the wear-resistant DTY fiber.

In a second aspect, the application provides a production process of a wear-resistant DTY, which adopts the following technical scheme:

a production process of wear-resistant DTY comprises the following steps:

s1: uniformly mixing the wear-resistant agent, the filler, the whitening agent and the polyester chips, and then carrying out metering, extrusion, cooling, oiling and winding to obtain the POY fiber;

s2: and (5) heating, false twisting, shaping, oiling and winding the POY fiber in the step S1 to obtain the wear-resistant DTY.

By adopting the technical scheme, the wear-resistant agent, the filler and the polyester chips are mixed, the raw materials are fully dispersed, then the wear-resistant agent and the filler are uniformly dispersed in the POY fiber through melt extrusion to form a wear-resistant layer structure, and finally the wear-resistant DTY is prepared through heating, false twisting, sizing, oiling and winding.

Preferably, in step S1:

the extrusion temperature is 260-280 ℃;

the winding speed is 2200-2500 m/min;

the oiling oil agent is prepared from the following raw materials in parts by weight: 50-70 parts of white oil, 10-15 parts of epoxy phosphate and 30-40 parts of water; the oiling rate is 0.35-0.38 wt%.

By adopting the technical scheme, under the condition of the extrusion temperature, each component in the raw materials is stable and is not easy to denature and degrade. In addition, after oiling, epoxy phosphate and white oil can be attached to the surface of the POY fiber, so that the friction coefficient of the POY fiber is reduced, and the convergence and smoothness of the POY fiber are improved.

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

1. due to the adoption of the wear-resisting agent and the filler, under the synergistic effect of the wear-resisting agent and the filler, the wear-resisting index of the wear-resisting DTY fiber fabric is reduced to 1.68, and the wear-resisting property is excellent.

2. The potassium titanate whisker modified by the fluorine silane coupling agent is preferably selected, so that the dispersion uniformity and the reaction activity of the potassium titanate whisker are improved, and the wear resistance of the wear-resistant DTY is further improved.

3. According to the method, the stability of the raw materials is ensured by controlling the extrusion temperature, the friction coefficient of the POY fiber is further reduced under the assistance of white oil and epoxy phosphate, and the wear-resisting property of the wear-resisting DTY is improved.

Detailed Description

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

In the raw materials of the abrasion-resistant DTY of the present application, the product information of the polyester chip is shown in table 1.

TABLE 1 product information sheet of polyester chip

Intrinsic viscosity dl/g	Mol/t of terminal carboxyl group	Melting Point C	Water content%
				0.55-0.68	40	220	0.4

The manufacturer of the polyester chip is Shaoxing Xineng textile science and technology limited company.

Preferably, the benzoxazine is at least one of phenol type benzoxazine, bisphenol F type benzoxazine and bisphenol a type benzoxazine. Further preferably, the benzoxazine is composed of phenol type benzoxazine and bisphenol F type benzoxazine according to the mass ratio of (2.5-3.2): (0.3-0.8). Preferably, the phenol benzoxazine manufacturer is Shanghai Neon Analyzer Co., Ltd, and the model is AMEX 411. Further preferably, the phenol type benzoxazine is subjected to grinding treatment, and the average particle size of the phenol type benzoxazine after grinding treatment is 350 μm.

Preferably, the bisphenol F benzoxazine is produced by Jiaxing Yuan Biotechnology Co., Ltd, and the model is HS-31100.

Preferably, the polycarbonate manufacturer is Mitsubishi engineering, Japan, having a product number DS3002R 7011A.

Preferably, the boron nitride is hexagonal boron nitride, the manufacturer is Liaobin Fine chemical Co., Ltd, the average particle size of the boron nitride is 1-2 μm, and the type is BN-B.

Preferably, the zinc oxide is nano zinc oxide, the average grain diameter of the nano zinc oxide is 50nm, and the manufacturer is DK-ZnO-F50, which is Beijing Germany island gold technologies Co.

Preferably, the manufacturer of the potassium titanate whisker is Ensan novel carbon material Hezhou limited, the average length is 10-200 mu m, and the average diameter is 1-29 mu m. Further preferably, the potassium titanate whisker is modified by a fluorosilane coupling agent, and the modification method comprises the following steps:

1) dissolving a fluorosilane coupling agent in an acetone solution to prepare a modified solution, wherein the mass fraction of the fluorosilane coupling agent in the modified solution is 5%;

2) reacting the potassium titanate whisker with the modification liquid for 10min under the stirring condition of 800rpm, and then drying to obtain the potassium titanate whisker.

Preferably, the fluorosilane coupling agent is at least one of trifluoropropyltriethoxysilane, trifluoropropyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane. Further preferably, the fluorosilane coupling agent consists of trifluoropropyltriethoxysilane and heptadecafluorodecyltrimethoxysilane according to the mass ratio of 2.6: 1.5.

Preferably, the manufacturer of trifluoropropyltriethoxysilane is Wuhan Huazhike scientific biotechnology, Inc., the manufacturer of trifluoropropyltrimethoxysilane is Jinan Chen Tai Fuji chemical, Inc., and the manufacturer of heptadecafluorodecyltrimethoxysilane is Hubei Koufole materials science and technology, Inc.

Preferably, the manufacturer of erucamide is Jining Sanshi Biotech, Inc. More preferably, erucamide is subjected to a grinding treatment, and the average particle size of the erucamide after the grinding treatment is 200 μm.

Preferably, the whitening agent can be a commercially available polyester POY whitening agent. Further preferably, the whitening agent of the present application is preferably manufactured by a manufacturer of the whitening agent manufactured by Condits chemical engineering (Hubei) Co.

The production process of the wear-resistant DTY comprises the following steps:

Preferably, in step S1, the base temperature is 260 to 280 ℃, and more preferably, the extrusion temperature is 270 ℃.

The winding speed is 2200 to 2500m/min, and more preferably 2350 m/min.

Preferably, the oiling oil agent is prepared from the following raw materials in parts by weight: 50-70 parts of white oil, 10-15 parts of epoxy phosphate and 30-40 parts of water; the oiling rate is 0.35-0.38 wt%. More preferably, the oiling rate is 0.36 wt%.

Preferably, the manufacturer of the epoxy phosphate is Shenzhen south China Issman science and technology Limited, and the solid content is 72%.

The information on the main raw materials of the examples and comparative examples of the present application is shown in table 2.

TABLE 2 information on main materials of examples and comparative examples of the present application

Examples

Example 1

The wear-resistant DTY is prepared from the following raw materials in parts by weight: 120kg of polyester chips, 2kg of wear-resistant agent, 5kg of filler and 1kg of whitening agent.

The production process of the wear-resistant DTY comprises the following steps:

s1: the anti-wear agent, the filler, the whitening agent and the polyester chips are uniformly mixed, and then the POY fiber is prepared by metering, extruding, cooling, oiling and winding, wherein the extruding temperature is 270 ℃, the winding speed is 2350m/min, and the oiling rate is 0.36 wt%. The oiling oil agent is prepared from the following raw materials in parts by weight: 50kg of white oil, 10kg of epoxy phosphate and 30kg of water;

s2: the POY fiber in step S1 was operated according to the following process: the wear-resistant DTY is prepared by shredding, a first roller, a first hot box, a cooling plate, a false twister, a second roller, a grid nozzle, a shaping hot box and a third roller, oiling and winding forming, wherein the temperature of the first hot box is 185 ℃, the temperature of the second hot box is 135 ℃, the draft ratio is 1.78, the stretching multiple is 1.62, the shaping overfeeding rate is 5.5%, the shaping temperature is 90 ℃, the winding overfeeding rate is 3.6%, and the winding tension is 20-22 Cn.

Wherein the wear-resisting agent consists of benzoxazine and polycarbonate according to the mass ratio of 1.5: 12. The filler is boron nitride.

The manufacturer of the polyester chip is Shaoxing Xineng textile science and technology limited company. The benzoxazine is composed of phenol type benzoxazine and bisphenol F type benzoxazine according to the mass ratio of 2.5: 0.3. And grinding the phenol type benzoxazine, wherein the average particle size of the ground phenol type benzoxazine is 350 mu m. The manufacturer of the phenol benzoxazine is Shanghai Neon Analyzer, Inc., and the model is AMEX 411. The bisphenol F benzoxazine is produced by Jiaxing Yuan Biotechnology Co., Ltd, and has the model number of HS-31100. The boron nitride is hexagonal boron nitride, the manufacturer is Liaobin fine chemical Co., Ltd, the average grain diameter of the boron nitride is 1-2 μm, and the type is BN-B. The whitening agent manufacturer is Condisi chemical (Hubei) Co. The manufacturer of the epoxy phosphate is Shenzhen south China Issman science and technology Limited company, and the solid content is 72 percent. The white oil is produced by Shanghai Korea company of Jinhui Kong.

Example 2

The abrasion resistant DTY of examples 2-5 was prepared from the following raw materials: polyester chip, wear-resisting agent, filler and whitening agent.

The process for producing the abrasion resistant DTY of examples 2-5, comprising the steps of:

Wherein the wear-resisting agent consists of benzoxazine and polycarbonate according to the mass ratio of 1.5: 12. The filler is potassium titanate whisker. The benzoxazine is composed of phenol type benzoxazine and bisphenol F type benzoxazine according to the mass ratio of 2.5: 0.3. The manufacturer of the erucamide is Jining Sanshi Biotech Co., Ltd, the erucamide is crushed, and the average particle size of the crushed erucamide is 200 μm.

The amounts of the respective raw materials of the abrasion resistant DTY in examples 2 to 5 added are shown in Table 3.

TABLE 3 addition of abrasion resistant DTY materials in examples 2-5

Example 6

The present embodiment is different from embodiment 3 in that: the filler in the wear-resistant DTY raw material was composed of potassium titanate whiskers and boron nitride in a mass ratio of 6:1.5, and the rest was the same as in example 3.

The production process of DTY of this example was the same as example 3.

Example 7

The present embodiment is different from embodiment 3 in that: the filler in the wear-resistant DTY raw material consists of potassium titanate whiskers and zinc oxide in a mass ratio of 6:1.5, and the rest is the same as in example 3.

The production process of DTY of this example was the same as example 3.

Example 8

This embodiment is different from embodiment 6 in that: the filler in the wear-resistant DTY raw material was composed of potassium titanate whiskers and boron nitride in a mass ratio of 8:2.5, and the rest was the same as in example 6.

The production process of DTY of this example was the same as example 6.

Example 9

This embodiment is different from embodiment 6 in that: the filler in the wear-resistant DTY raw material was composed of potassium titanate whiskers and boron nitride in a mass ratio of 10:3, and the rest was the same as in example 6.

The production process of DTY of this example was the same as example 6.

Example 10

The present embodiment is different from embodiment 8 in that: the potassium titanate whiskers were subjected to modification treatment with a fluorosilane coupling agent, and the rest was the same as in example 8.

The method for modification treatment of potassium titanate whiskers in the embodiment comprises the following steps:

Wherein the fluorine silane coupling agent is tridecafluorooctyltrimethoxysilane, and the manufacturer of the tridecafluorooctyltrimethoxysilane is Hangzhou Jessica chemical Co.

The production process of DTY of this example was the same as that of example 8.

Example 11

Wherein the fluorosilane coupling agent is trifluoropropyltrimethoxysilane, and the manufacturer of the trifluoropropyltrimethoxysilane is Jinan Tu Fuji chemical Co.

Example 12

Wherein the fluorosilane coupling agent consists of trifluoropropyltriethoxysilane and trifluoropropyltrimethoxysilane according to the mass ratio of 2: 1. The manufacturers of trifluoropropyltriethoxysilane are the scientific biotechnology limited of Wuhan Hua, and the manufacturers of trifluoropropyltrimethoxysilane are the chemical industries limited of Thai in Jinan nations.

Example 13

Wherein the fluorosilane coupling agent consists of trifluoropropyltriethoxysilane and heptadecafluorodecyltrimethoxysilane according to the mass ratio of 2.6: 1.5. The manufacturers of trifluoropropyltriethoxysilane are full of Wuhan Hua scientific biotechnology, and the manufacturers of heptadecafluorodecyltrimethoxysilane are Hubei Koufole materials science and technology, Inc.

Example 14

This embodiment is different from embodiment 13 in that: the attrition resistant DTY feed also included 0.8kg of erucamide, the remainder being the same as in example 13.

The method of modification treatment of potassium titanate whiskers in this example was the same as in example 13.

The production process of DTY of this example was the same as that of example 13.

Example 15

This embodiment is different from embodiment 13 in that: the raw materials for the attrition resistant DTY also included 1.2kg of erucamide, the remainder being the same as in example 13.

Comparative example

The abrasion-resistant DTY of the comparative example is prepared from the following raw materials in parts by weight: 120kg of polyester chips, 5kg of filler and 1kg of whitening agent.

The production process of the wear-resistant DTY of the comparative example comprises the following steps:

Wherein, the manufacturers of the polyester chips are Shaoxing Xineng textile science and technology Limited companies. The filler is nano titanium dioxide, the average grain diameter of the nano titanium dioxide is 3-5nm, the model is MZT-A1, and the manufacturer is Ningbo Mingnan New materials science and technology company. The whitening agent manufacturer is Condisi chemical (Hubei) Co. The manufacturer of the epoxy phosphate is Shenzhen south China Issman science and technology Limited company, and the solid content is 72 percent. The white oil is produced by Shanghai Korea company of Jinhui Kong.

Performance test

Detection method

The wear-resistant DTY of examples 1-15 and comparative example were woven into a fabric by a weaving machine, and the fabric was subjected to the abrasion resistance measurement for fabrics according to GB/T21196.3-2007 Martindall method, part 3: measurement of mass loss the abrasion resistance was measured, and the abrasion resistance index Ai was determined to be n/Δ m, where n indicates the total number of rubs and Δ m indicates the mass loss in milligrams under the total number of rubs. The results are shown in Table 4.

TABLE 4 abrasion resistance test data of abrasion resistant DTY of examples 1 to 15 and comparative example

Comparing examples 1-5, comparative example and combining table 4, it can be seen that the wear resistance of the wear resistant DTY is greatly improved by the wear resistant agent and filler, and the wear resistance index is reduced to about 3.5.

As can be seen by comparing example 3, example 6, and example 7 with table 4, the wear resistance of boron nitride is more excellent than that of zinc oxide.

By comparing the examples 7, 8 and 9 and combining the table 4, it can be seen that the wear resistance index is reduced to 2.9 and the wear resistance effect is better because the filler is compounded by boron nitride and potassium titanate whisker.

In comparison with example 9 and examples 10 to 13, and in combination with table 4, it can be seen that, after the potassium titanate whisker modified by the fluorine-silicon coupling agent is added, the wear resistance of the wear-resistant DTY is further improved, and the improvement range of the fluorine silane coupling agent compounded by trifluoropropyltriethoxysilane and heptadecafluorodecyltrimethoxysilane is larger.

As can be seen by comparing example 13, examples 14-15 and by combining Table 4, the abrasion resistance was further improved by the addition of erucamide and the abrasion resistance index was reduced to 1.68 at an erucamide addition of 1.2 kg.

To sum up, the wear-resisting DTY of this application has better wear resistance, can be applicable to special dress processing preparation, and wear-resisting effect is good.

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. The wear-resistant DTY is characterized by being mainly prepared from the following raw materials in parts by weight: 150 portions of polyester chips, 2 to 5 portions of wear-resistant agent, 5 to 10 portions of filler and 1 to 2 portions of whitening agent; the wear-resisting agent is composed of benzoxazine and polycarbonate according to the mass ratio of (1.5-3.5) to (12-15), and the filler is at least one of boron nitride, potassium titanate whisker and zinc oxide.

2. A wear resistant DTY as claimed in claim 1, wherein: the composite material is mainly prepared from the following raw materials in parts by weight: 130-140 parts of polyester chip, 3-5 parts of wear-resistant agent, 6-8 parts of filler and 1-2 parts of whitening agent; the wear-resisting agent is composed of benzoxazine and polycarbonate according to the mass ratio of (1.5-3.5) to (12-15), and the filler is at least one of boron nitride and potassium titanate whisker.

3. A wear resistant DTY according to claim 1 or 2, wherein: the filler is composed of one of boron nitride and zinc oxide and potassium titanate whisker according to the mass ratio of (6-10) to (1.5-3).

4. A wear resistant DTY as claimed in claim 3, wherein: the mass ratio of the filler to the wear-resisting agent is (1.75-2.5): 1.

5. A wear resistant DTY as claimed in claim 3, wherein: the potassium titanate whisker is modified by a fluorosilane coupling agent.

6. A wear resistant DTY as claimed in claim 5, wherein: the fluorosilane coupling agent is at least one of trifluoropropyltriethoxysilane, trifluoropropyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane.

7. A wear resistant DTY as claimed in claim 6, wherein: the raw material also comprises (0.8-1.5) parts by weight of erucamide.

8. A process of manufacturing a wear resistant DTY as claimed in claim 1, wherein: the method comprises the following steps:

9. The process of claim 9, wherein the wear resistant DTY comprises: in the step S1:

the extrusion temperature is 260-280 ℃;

the winding speed is 2200-2500 m/min;