CN106589919B - Master batch of wear-resistant fiber, manufacturing method thereof and wear-resistant fiber manufactured by using master batch - Google Patents

Abstract

The invention provides a master batch of wear-resistant fiber, a manufacturing method thereof and wear-resistant fiber prepared by using the master batch, which comprises about 83.5 to 98.4 weight parts of nylon main body, about 1.5 to 15 weight parts of solid wear-resistant modifier and about 0.1 to 2 weight parts of coupling agent. The solid abrasion-resistant modifier comprises polydimethylsiloxane or derivatives thereof. Therefore, the wear-resistant fiber is modified by the solid wear-resistant modifier, and has high dyeability and high wear resistance.

Description

Masterbatch of wear-resistant fiber, method for producing same, and wear-resistant fiber made using same

technical field

The invention relates to a textile material, in particular to a masterbatch modified by a solid wear-resistant modifying agent, a manufacturing method thereof, and a wear-resistant fiber made by using the same.

Background technique

Under the trend of globalization, the textile industry is facing strong competitive pressure. The textile industry must constantly develop new technologies and diversified products in order to face global competition. In modern society, more and more people challenge sports such as mountaineering, rock climbing, and skiing. In order to improve the durability of fabrics for outdoor activities and bags and boxes, their durability is becoming more and more important. Therefore, the research and development of wear-resistant fabrics has become an urgent need for the industry. research topic.

Contents of the invention

The invention provides a wear-resistant fiber masterbatch, its manufacturing method and the wear-resistant fiber made by using the wear-resistant fiber. The wear-resistant fiber is modified by a solid wear-resistant modifier and has high dyeability and high wear resistance. characteristic.

The invention provides a wear-resistant fiber masterbatch, which includes about 83.5-98.4 parts by weight of nylon main body, about 1.5-15 parts by weight of solid wear-resistant modifier and about 0.1-2 parts by weight of coupling agent. The solid wear-resistant modifier includes polydimethylsiloxane or its derivatives.

In an embodiment of the present invention, the coupling agent includes titanate, epoxy silane, methacryloxysilane, acryloxysilane, aminosilane, isocyanatosilane or a combination thereof.

In an embodiment of the present invention, the average molecular weight of the above-mentioned solid wear-resistant modifier is greater than or equal to about 500,000.

In an embodiment of the present invention, the average molecular weight of the solid wear-resistant modifier is in the range of about 500,000 to 2 million.

In an embodiment of the present invention, the nylon body includes nylon 6, nylon 6,6, nylon 6,10, nylon 6,12, nylon 10,10, nylon 11, nylon 12 or combinations thereof.

The present invention further provides a wear-resistant fiber, which is made by using the above-mentioned masterbatch of the wear-resistant fiber.

In an embodiment of the present invention, each fiber fineness (Denier per Filament, D.P.F.) of the above-mentioned wear-resistant fiber is about 4.5 or lower than about 4.5.

In an embodiment of the present invention, the above-mentioned wear-resistant fiber includes a single-component fiber or a bi-component core-sheath composite fiber.

In an embodiment of the present invention, the abrasion resistance of the cloth made of the above-mentioned wear-resistant fiber is at least about 800 to 3000 cycles under the test of ASTM D3884.

The invention also provides a method for manufacturing the wear-resistant fiber masterbatch. About 83.5 to 98.4 parts by weight of nylon body, about 1.5 to 15 parts by weight of solid wear-resistant modifier and about 0.1 to 2 parts by weight of coupling agent are supplied to the extruder for kneading process to form the wear-resistant Mill the fiber masterbatch, where the kneading temperature is in the range of about 200°C to 285°C.

In an embodiment of the present invention, the above-mentioned kneading temperature is changed from the feed end to the discharge end by staged temperature rise, stepwise temperature rise or continuous temperature rise.

In an embodiment of the present invention, the above-mentioned nylon body, the solid wear-resistant modifier and the coupling agent are added into the extruder at the same time.

In one embodiment of the present invention, the solid wear-resistant modifier is firstly treated with the above-mentioned coupling agent, and then the treated solid wear-resistant modifier and the nylon body are added to the extruded in the plane.

In an embodiment of the present invention, the above-mentioned extruder includes a single-shaft extruder or a double-shaft extruder.

In an embodiment of the present invention, the solid wear-resistant modifier includes polydimethylsiloxane (PDMS) or its derivatives.

In an embodiment of the present invention, the coupling agent includes titanate, epoxy silane, methacryloxysilane, acryloxysilane, aminosilane, isocyanatosilane or a combination thereof.

In an embodiment of the present invention, the average molecular weight of the above-mentioned solid wear-resistant modifier is greater than or equal to about 500,000.

In an embodiment of the present invention, the average molecular weight of the solid wear-resistant modifier is in the range of about 500,000 to 2 million.

In an embodiment of the present invention, the nylon body includes nylon 6, nylon 6,6, nylon 6,10, nylon 6,12, nylon 10,10, nylon 11, nylon 12 or combinations thereof.

Based on the above, the present invention uses high-efficiency kneading processing and coupling agent modification technology to effectively disperse the solid wear-resistant modifier in the nylon main body, and prepare a spinning-grade self-lubricating modified nylon masterbatch for application . The wear-resistant fiber of the present invention can be used as an industrial fiber, which is thinner and stronger than existing fibers, has better dyeability, and has wider application levels.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a wear-resistant fiber masterbatch according to an embodiment of the present invention;

Fig. 2 is a schematic perspective view of a wear-resistant fiber according to an embodiment of the present invention;

Fig. 3 is a schematic perspective view of a wear-resistant fiber according to another embodiment of the present invention.

Explanation of reference signs:

10: masterbatch;

100: nylon body;

102: solid wear modifier;

104: coupling agent;

200: single component fiber;

300: Two-component core-sheath composite fiber;

302: core;

304: Sheath.

Detailed ways

The invention proposes a wear-resistant fiber masterbatch (or modified masterbatch), which uses a solid wear-resistant modifier to modify the nylon body, and adds an appropriate coupling agent to make it compatible, so as to prepare a modified High quality nylon masterbatch. Using this modified nylon masterbatch, fibers with high strength and wear resistance can be produced.

Fig. 1 is a three-dimensional schematic view of a wear-resistant fiber masterbatch according to an embodiment of the present invention.

Referring to Fig. 1, the masterbatch 10 of the wear-resistant fiber of the present invention includes about 83.5 to 98.4 parts by weight of nylon main body 100, about 1.5 to 15 parts by weight of solid wear-resistant modifier 102 and about 0.1 to 2 parts by weight of even Joint agent 104.

The aforementioned nylon body 100 may include, but not limited to, nylon 6, nylon 6,6, nylon 6,10, nylon 6,12, nylon 10,10, nylon 11, nylon 12 or combinations thereof. Nylon body 100 may be a single component or a mixture of components.

The solid wear-resistant modifier 102 is a polysiloxane modifier. In one embodiment, the solid wear-resistant modifier 102 may include (but not limited to) polydimethylsiloxane (polydimethylsiloxane, PDMS) or its derivatives. The average molecular weight of the solid wear-resistant modifier 102 is greater than or equal to about 500,000. In one embodiment, the average molecular weight may be a weight average molecular weight. In one embodiment, the average molecular weight of the solid wear-resistant modifier 102 is in the range of about 500,000 to 2 million. More specifically, the average molecular weight of the solid wear-resistant modifier 102 can be about 500,000, 600,000, 700,000, 800,000, 900,000, 1 million, 1.1 million, 1.2 million, 1.3 million, 1.4 million, 1.5 million , 1.6 million, 1.7 million, 1.8 million, 1.9 million or 2 million, or any value between any two values above.

The coupling agent 104 can make the nylon body 100 and the solid wear-resistant modifying agent 102 compatible with each other, so that the wear-resistant fibers produced subsequently can be further refined. In one embodiment, the coupling agent 104 is chemically bonded to each of the nylon body 100 and the solid wear-resistant modifier 102 . The coupling agent 104 may include titanate, epoxysilane, methacryloxysilane, acryloxysilane, aminosilane, isocyanatosilane, or combinations thereof.

It should be particularly noted that the present invention uses a solid modifying agent instead of the existing liquid modifying agent, so the problem of uneven dyeability in subsequent processing steps can be avoided. More specifically, in the existing masterbatches, the low-molecular-weight liquid modifying agent will migrate to the surface of the masterbatch, reducing the dyeing uniformity of the masterbatch. However, the modifying agent of the present invention is a high solid modifying agent, which is uniformly dispersed in the masterbatch through the coupling agent, so the problem of poor dyeing uniformity caused by the movement of the liquid modifying agent will not occur.

In addition, based on 100 parts by weight of the masterbatch, the content of the solid modifier of the present invention is in the range of about 1.5 to 15 parts by weight, so that both cost and wear resistance can be considered. Specifically, if the content of the solid modifier is too high, the cost will increase and the dyeability will decrease. If the content of the solid modifying agent is too low, the abrasion resistance of the obtained abrasion resistant fiber is insufficient. Based on 100 parts by weight of the masterbatch, the content of the solid modifier of the present invention can be, for example, about 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 parts by weight, or any value in any two values mentioned above.

The present invention also proposes a method for producing wear-resistant fiber masterbatch, which includes supplying nylon main body, solid wear-resistant modifier and coupling agent to an extruder for kneading process to form wear-resistant fiber masterbatch (such as Shown in the masterbatch 10 of Fig. 1). The above-mentioned extruder can be a single-shaft extruder or a double-shaft extruder.

In one embodiment, the kneading temperature is in the range of 200°C to 285°C (eg, 220°C to 265°C). In one embodiment, the above-mentioned kneading temperature is changed stepwise from the feed end to the discharge end. For example, the processing temperature can be divided into nine heating sections, which are about 220°C (feed end temperature), 235°C, 240°C, 250°C, 250°C, 255°C, 260°C, 260°C and 265°C (outlet end temperature). end temperature). However, the present invention is not limited thereto. In another embodiment, the temperature change of the above kneading temperature from the feed end to the discharge end may also be stepwise temperature rise, continuous temperature rise or any suitable temperature control change. In addition, the length-to-diameter ratio (L/D) of the extruder is about 30-50 (eg, about 40), and the screw speed is about 100-400 rpm (eg, about 300 rpm).

In one embodiment, the nylon body, the solid wear-resisting modifier and the coupling agent are added into the extruder at the same time. In another embodiment, the solid wear-resistant modifier is firstly treated with a coupling agent, and then the treated solid wear-resistant modifier and the nylon body are added into the extruder. It should be particularly noted that the present invention does not limit the order of adding the above-mentioned nylon main body, solid wear-resistant modifier and coupling agent, as long as the above-mentioned components can be fully mixed to produce a modified masterbatch with uniform components.

The present invention also proposes a wear-resistant fiber made by using the above-mentioned masterbatch. In one embodiment, the wear-resistant fiber of the present invention is a single-component fiber 200 , as shown in FIG. 2 . The monocomponent fiber 200 is essentially obtained from the masterbatch 10 as shown in FIG. 1 through a spinning process.

In another embodiment, the wear-resistant fiber of the present invention is a bicomponent core-sheath composite fiber 300 , as shown in FIG. 3 . The bicomponent core-sheath composite fiber 300 includes a core 302 and a sheath 304 . The sheath 304 is used to cover the core 302 . The material of the core 302 may include nylon 6, nylon 6,6, nylon 6,10, nylon 6,12, nylon 10,10, nylon 11, nylon 12, or combinations thereof. The material of core 302 may be a single component or a mixture of components. The sheath 304 is essentially made of the masterbatch 10 as shown in FIG. 1 , so the prepared wear-resistant fiber can have high-strength wear-resistant properties.

The preparation method of the wear-resistant fiber of the present invention is, for example, subjecting the modified masterbatch of the present invention to a melt-spinning process to obtain a semi-drawn filament, and then stretching the semi-drawn filament bundle with a heated hot roller stretching machine to prepare Modified nylon fibers. However, the present invention is not limited thereto, and the modified masterbatch of the present invention can also be used to directly perform a melt-spinning process with a large draw ratio to obtain fully-drawn (FDY) modified nylon fibers. For example, in the above melt spinning process, the processing temperature is about 260° C. to 280° C., and the speed of the coiler is greater than or equal to about 3000 m/min.

Of particular note is that the wear-resistant fibers of the present invention have a Denier per Filament (D.P.F.) of about 4.5 or less. In one embodiment, the abrasion resistance of the fabric made of the wear-resistant fiber of the present invention is at least about 800 to 3000 cycles under the test of ASTM D3884. In other words, the wear-resistant fiber of the present invention is thinner and stronger than existing fibers, and has a wider range of applications.

Hereinafter, a comparative example and multiple examples will be cited to verify the effectiveness of the present invention.

According to the different masterbatch formulations 1-3 in Table 1 and the experimental parameters in Table 2, the fabrics of Examples 1-3 were woven on a loom, and then the abrasion resistance test was carried out. In Comparative Example 1, a commercially available conventional PP bag cloth was used for the abrasion resistance test.

Table I

Table II

Note: "Abrasion resistance test times" refers to the number of abrasion resistance tests under the conditions of ASTMD3884

As shown in Table 2, the abrasion resistance times of the fabrics prepared by using the wear-resistant fiber of the present invention under the test of ASTM D3884 are all more than about 900 times, showing a good wear-resistant effect. In addition, as the amount of solid wear-resistant modifier increases, the wear-resistant times will also increase. As shown by the results of Examples 2-3, when the solid wear-resistant modifying agent of the wear-resistant fiber exceeds 5 parts by weight, the wear-resistant times will exceed about 2500 times. On the contrary, only 516 times of abrasion resistance of fabrics made of conventional PP under ASTMD3884 test. In addition, each fiber fineness (D.P.F.) of the wear-resistant fiber of the present invention is lower than 4.5, while each fiber fineness (D.P.F.) of the existing wear-resistant fiber is as high as 6.5 or more, so the wear-resistant fiber of the present invention is compared Existing fibers can be further refined for wider applications.

In summary, the solid wear-resistant modifier used in the present invention is a polysiloxane (polysiloxane) type modifier, such as ultra-high molecular weight polydimethylsiloxane (PDMS), which is in the form of a solid powder Therefore, high-efficiency mixing processing and coupling agent modification technology can be used to effectively disperse the solid wear-resistant modifier in the nylon body, and prepare a spinning grade self-lubricating modified wear-resistant nylon masterbatch for application. The wear-resistant fiber of the present invention can be used as an industrial fiber, which is thinner and stronger than existing fibers, has better dyeability, and has wider application levels.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (18)

1. a kind of abrasion resistant fibrous master batch characterized by comprising

The nylon main body of 83.5 to 97 parts by weight；

The wear-resisting modification agent of the solid-state of 1.5 to 15 parts by weight；And

The coupling agent of 1.5 parts by weight, wherein the wear-resisting modification agent of the solid-state is dimethyl silicone polymer.

2. abrasion resistant fibrous master batch according to claim 1, which is characterized in that the coupling agent includes titanate esters, epoxy Base silane, methacryloxypropyl silane, acryloxy silane, amino silane, isocyanatosilanes or combinations thereof.

3. abrasion resistant fibrous master batch according to claim 1, which is characterized in that the average mark of the wear-resisting modification agent of solid-state Son amount is more than or equal to 500,000.

4. abrasion resistant fibrous master batch according to claim 1, which is characterized in that the average mark of the wear-resisting modification agent of solid-state Son amount is in the range of 500,000 to 2,000,000.

5. abrasion resistant fibrous master batch according to claim 1, which is characterized in that the nylon main body includes nylon 6, nylon 6,6, nylon 6,10, nylon 6,12, nylon 10,10, nylon 11, nylon 12 or combinations thereof.

6. a kind of abrasion resistant fibrous, which is characterized in that made using described in any one of claim 1 to 55 described in any item abrasion resistant fibrous master batches At.

7. according to claim 6 abrasion resistant fibrous, which is characterized in that the every abrasion resistant fibrous fibre fineness is 4.5 Or it is lower than 4.5.

8. according to claim 6 abrasion resistant fibrous, which is characterized in that described abrasion resistant fibrous including one-component fiber or double groups Part sheath-core type conjugate fiber.

9. according to claim 6 abrasion resistant fibrous, which is characterized in that it is described it is abrasion resistant fibrous made of cloth in Abrasion performance number under ASTMD3884 test is 800 to 3000 circulations.

10. a kind of manufacturing method of abrasion resistant fibrous master batch characterized by comprising

By the nylon main body of 83.5 to 97 parts by weight, the wear-resisting modification agent of solid-state of 1.5 to 15 parts by weight and the idol of 1.5 parts by weight Connection agent, which is supplied into extruder, carries out mixing processing procedure, to form the abrasion resistant fibrous master batch, wherein the wear-resisting modification agent of the solid-state For dimethyl silicone polymer, in the range of melting temperature is 200 DEG C to 285 DEG C.

11. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that the melting temperature by The temperature change of feeding end to discharge end is temperature-gradient method or continuous warming.

12. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that the nylon main body, institute It states the wear-resisting modification agent of solid-state and the coupling agent is while being added into the extruder.

13. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that first with the coupling agent pair The wear-resisting modification agent of solid-state is handled, then by the processed wear-resisting modification agent of solid-state and the nylon main body be added to In the extruder.

14. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that the extruder includes single Axis extruder or twin shaft extruder.

15. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that the coupling agent includes titanium Acid esters, epoxy radicals silicone hydride, methacryloxypropyl silane, acryloxy silane, amino silane, isocyanatosilanes or its group It closes.

16. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that the wear-resisting modification of solid-state The average molecular weight of agent is more than or equal to 500,000.

17. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, wherein the wear-resisting modification agent of the solid-state is flat Average molecular weight is in the range of 500,000 to 2,000,000.

18. the manufacturing method of abrasion resistant fibrous master batch according to claim 10, which is characterized in that the nylon main body includes Nylon 6, nylon 6,6, nylon 6,10, nylon 6,12, nylon 10,10, nylon 11, nylon 12 or combinations thereof.