High-gloss nylon 6 golden master batch, nylon 6 golden fiber and preparation method of nylon 6 golden master batch and nylon 6 golden fiber

Abstract

The invention discloses a nylon-6 golden master batch with high gloss, a nylon-6 golden fiber and a preparation method thereof, the nylon-6 golden master batch is prepared from the following raw materials in parts by weight: 7-14 parts of a metal complex, 1-3 parts of a dispersing agent and 85-92 parts of bright nylon-6 slices, and the molecular formula of the metal complex is C34H24CrN8NaO6. The melt index of the nylon 6 golden master batch is 44-45 g / 10 min, the relative viscosity is 2.4-2.5, the water content is 500-800 ppm, the amino-terminated group content is 30-35 mmol / kg, and the carboxyl-terminated group content is 64-67 mmol / kg. According to the invention, the metal complex is added in the granulation process, the molecular formula of the metal complex is C34H24CrN8NaO6, so that the high-gloss golden nylon fiber can be prepared from non-metallic materials, and the metallic luster is successfully introduced into the nylon fiber.

Description

Technical Field

[0001] The invention belongs to the field of fiber technology, and in particular relates to a nylon 6 golden masterbatch with high gloss, a nylon 6 golden fiber and a preparation method thereof. Background Art

[0002] With rapid economic development, consumers are increasingly demanding more diverse and functional textiles, and are increasingly concerned about the environmental impact of textile manufacturing. In response, the textile market has seen the emergence of diverse and differentiated products in recent years, such as antimicrobial fibers, solution-dyed fibers, and biodegradable fibers.

[0003] Nylon fiber is widely favored by consumers for its skin-friendly texture, exceptional strength, and abrasion resistance. With the gradual advancement of dyeing and finishing technologies and the maturation of dye-free technology, nylon fiber has emerged in a rich palette of colors, enabling its use in high-end fabrics, home furnishings, and apparel. However, currently, nylon fiber products are primarily available in conventional colors; high-gloss, metallic-like, and other distinctive textures are extremely rare.

[0004] At present, the mainstream method for preparing high-gloss fibers is to introduce metal fibers and add high-gloss glass beads and other materials during the melt granulation process. Chinese patent application number CN201620802084.5 discloses a method for preparing high-gloss spandex coated yarn, and Chinese patent application number CN202320427087.5 discloses a method for preparing composite yarn with high gloss. Both of the above patented methods achieve gloss improvement by introducing high-gloss metal filaments (stainless steel wire and silver wire) during the blending and texturing process, and are applicable to different types of fibers. However, the above methods are only applicable to blended fibers, and it is difficult to achieve metallic gloss improvement at the single component level. Moreover, due to the large difference in mechanical properties between metal filaments and traditional textile fibers, the difficulty of the texturing process will be greatly increased, resulting in limited applicable specifications. The introduced metal filaments will also affect the feel of the textiles. Chinese patent application number CN201510526059.9 discloses a high-gloss, high-strength nylon and its preparation method. By adding glass fibers and glass microbeads during the melt granulation process, the gloss and strength of the nylon material are effectively enhanced. However, the application of glass fibers and glass microbeads is limited to the preparation of nylon industrial plastic masterbatch and is difficult to adapt to the nylon fiber spinning process. Therefore, there is an urgent need to prepare a non-metallic fiber with high gloss. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a nylon 6 golden masterbatch with high gloss, nylon 6 golden fiber and its preparation method. The present invention adds a metal complex with the molecular formula of C during the granulation process. 34 H24 CrN8NaO6 can be used to prepare high-gloss golden nylon fibers using non-metallic materials, and successfully introduce metallic luster into nylon fibers.

[0006] The technical solutions of the present invention are as follows:

[0007] One of the purposes of the present invention is to provide a high-gloss nylon 6 golden masterbatch, which is composed of the following raw materials in parts by weight: 7-14 parts of a metal complex, 1-3 parts of a dispersant, and 85-92 parts of glossy nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

[0008] Furthermore, the nylon 6 golden masterbatch has a melt index of 44-45 g / 10 min, a relative viscosity of 2.4-2.5, a water content of 500-800 ppm, a terminal amino group content of 30-35 mmol / kg, and a terminal carboxyl group content of 64-67 mmol / kg.

[0009] A second object of the present invention is to provide a method for preparing the above-mentioned high-gloss nylon 6 golden masterbatch, comprising the following steps:

[0010] S11: Weigh the metal complex and dispersant according to the set ratio, premix them and put them into the buffer bin, put them into the hopper and stir them with a spiral until they are evenly mixed to obtain a premix;

[0011] S12: feeding the bright nylon 6 chips from the main feeding port and the premix obtained in step S11 from the side feeding port, mixing the bright nylon 6 chips and the premix evenly, and melt-mixing them in a twin-screw extruder to obtain a nylon 6 golden masterbatch melt;

[0012] S13: The nylon 6 golden masterbatch melt is extruded from the outlet of the twin-screw extruder to obtain nylon 6 golden masterbatch melt strips. The strips are cooled in a water cooling tank and then enter a pelletizer for pelletizing, vibratory screening and blast drying to obtain the nylon 6 golden masterbatch.

[0013] Furthermore, in step S12, the twin-screw extruder is provided with nine temperature zones, each temperature interval being 225°C, 235°C, 235°C, 215°C, 205°C, 195°C, 185°C, 175°C, and 165°C, and the head temperature is: 230°C.

[0014] A third object of the present invention is to provide a nylon 6 golden fiber with high gloss, wherein the raw material of the nylon 6 golden fiber includes any one of the above-mentioned nylon 6 golden masterbatches or includes the nylon 6 golden masterbatch prepared according to any one of the above-mentioned preparation methods.

[0015] Furthermore, the high-gloss nylon 6 golden fiber is composed of the following raw materials in parts by weight: 7-14 parts of nylon 6 golden masterbatch, 1-3 parts of dispersant, and 85-92 parts of glossy nylon 6 chips.

[0016] A fourth object of the present invention is to provide a method for preparing nylon 6 golden fiber with high gloss, comprising the following steps:

[0017] S21: Weigh nylon 6 golden masterbatch and bright nylon 6 chips according to a set ratio, dry them separately, feed the bright nylon 6 chips from the main feeding port, add the nylon 6 golden masterbatch to the buffer bin, lower it into the hopper, stir it evenly with a spiral, feed it from the side feeding port, mix it evenly, and then compound and melt it in a twin-screw extruder to obtain a composite melt;

[0018] S22: The composite melt obtained in step S21 is metered by a metering pump and then enters a spinning manifold, and is spun through the components to obtain a composite filament bundle, which is then subjected to slow cooling, monomer suction, side-blowing cooling, bundling and oiling, secondary cooling in the tunnel, stretching and shaping, and winding to obtain the nylon 6 golden fiber with high gloss.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a high-gloss golden nylon 6 fiber. The metal complex employed in this invention achieves a metallic texture imitation at the monofilament level, without affecting subsequent texturing processes. It is applicable to a wide range of specifications and does not degrade the textile's texture. The oxygen and nitrogen atoms of the C=O and C=N groups in the complex can form hydrogen bonds with the numerous hydrogen atoms in nylon, resulting in good binding stability. Testing has shown that the heavy metal ion content in nylon fibers produced using this compound complies with the GB / T 18885-2009 standard and is harmless to human health.

[0021] 2. The present invention provides a method for preparing high-gloss nylon 6 golden fiber, which optimizes the production process of high-gloss imitation metal fiber. The product can be prepared in a "one-step" method by melt blending. Since the complex of the present invention has good coloring and dispersion effects in nylon fiber and the added complex content is low, the original production process is greatly simplified while effectively reducing production costs.

[0022] 3. This invention provides a method for producing high-gloss golden nylon 6 fibers. By adjusting the metering pump frequency, the DPF number can be controlled, thereby mimicking different metallic colors. When the DPF number is between 1 and 2, the fiber exhibits a gold-like luster; when the DPF number is between 3 and 6, the fiber exhibits a copper-like luster. Compared to existing technologies, the preparation method provided by this invention offers greater flexibility and controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a high-gloss nylon 6 golden fiber provided by the present invention. DETAILED DESCRIPTION

[0024] Below in conjunction with preferred embodiment, and referring to attached Figure 1 , to further illustrate the present invention, the endpoints and any values of the ranges disclosed in the present invention are not limited to the precise ranges or values, and these ranges or values should be understood to include values close to these ranges or values; for numerical ranges, the endpoint values of each range, the endpoint values of each range and individual point values, and the individual point values can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be regarded as specifically disclosed herein; the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels; the experimental methods in the following examples, unless otherwise specified, are all conventional methods.

[0025] Example 1

[0026] This embodiment provides a high-gloss nylon 6 golden masterbatch, which is composed of the following raw materials in parts by weight: 10 parts of metal complex, 2 parts of dispersant, and 88 parts of glossy nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

[0027] In this embodiment, the nylon 6 golden masterbatch has a melt index of 44.34 g / 10 min, a relative viscosity of 2.4, a water content of 780 ppm, a terminal amino group content of 30.17 mmol / kg, and a terminal carboxyl group content of 64.81 mmol / kg.

[0028] Example 2

[0029] This embodiment provides a method for preparing the high-gloss nylon 6 golden masterbatch described in Example 1, comprising the following steps:

[0030] S11: Weigh the metal complex and dispersant according to the set ratio, premix them and put them into the buffer bin, put them into the hopper and stir them with a spiral until they are evenly mixed to obtain a premix;

[0031] S12: feeding the bright nylon 6 chips from the main feeding port and the premix obtained in step S11 from the side feeding port, mixing the bright nylon 6 chips and the premix evenly, and melt-mixing them in a twin-screw extruder to obtain a nylon 6 golden masterbatch melt;

[0032] S13: The nylon 6 golden masterbatch melt is extruded from the outlet of the twin-screw extruder to obtain nylon 6 golden masterbatch melt strips. The strips are cooled in a water cooling tank and then enter a pelletizer for pelletizing, vibratory screening and blast drying to obtain the nylon 6 golden masterbatch.

[0033] In this embodiment, in step S12, the twin-screw extruder is provided with nine temperature zones, and the temperature intervals are 225°C, 235°C, 235°C, 215°C, 205°C, 195°C, 185°C, 175°C, and 165°C, respectively, and the head temperature is: 230°C.

[0034] Example 3

[0035] This embodiment provides a nylon 6 golden fiber with high gloss. The raw material of the nylon 6 golden fiber includes the nylon 6 golden masterbatch described in Example 1 or the nylon 6 golden masterbatch prepared by the preparation method described in Example 2.

[0036] In this embodiment, the nylon 6 golden fiber is composed of the following raw materials in parts by weight: 10 parts of nylon 6 golden masterbatch and 90 parts of bright nylon 6 chips.

[0037] Example 4

[0038] This embodiment provides a method for preparing the high-gloss nylon 6 golden fiber described in Example 3, comprising the following steps:

[0039] S21: Weigh nylon 6 golden masterbatch and bright nylon 6 chips according to a set ratio, dry them separately, feed the bright nylon 6 chips from the main feeding port, add the nylon 6 golden masterbatch to the buffer bin, lower it into the hopper, stir it evenly with a spiral, feed it from the side feeding port, mix it evenly, and then compound and melt it in a twin-screw extruder to obtain a composite melt;

[0040] S22: The composite melt obtained in step S21 is metered by a metering pump and then enters the spinning box, and is spun through the components to obtain a composite filament bundle, which is then subjected to slow cooling, monomer suction, side blowing cooling, bundling and oiling, secondary cooling in the tunnel, stretching and shaping, and winding to obtain the high-gloss nylon 6 golden fiber with a specification of 24D / 24F and a DPF number of 1.

[0041] Example 5

[0042] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0043] The specification of the nylon 6 golden fiber prepared in this embodiment is 48D / 24F, and the DPF number is 2.

[0044] Example 6

[0045] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0046] The specification of the nylon 6 golden fiber prepared in this embodiment is 72D / 24F, and the DPF number is 3.

[0047] Example 7

[0048] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0049] The specification of the nylon 6 golden fiber prepared in this embodiment is 96D / 24F, and the DPF number is 4.

[0050] Example 8

[0051] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0052] The specification of the nylon 6 golden fiber prepared in this embodiment is 120D / 24F, and the DPF number is 5.

[0053] Example 9

[0054] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0055] The specification of the nylon 6 golden fiber prepared in this embodiment is 144D / 24F, and the DPF number is 6.

[0056] Example 10

[0057] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0058] The nylon 6 gold masterbatch of this embodiment is composed of the following raw materials in parts by weight: 7 parts of metal complex, 1 part of dispersant, and 85 parts of bright nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

[0059] The specification of the nylon 6 golden fiber prepared in this embodiment is 24D / 24F, and the DPF number is 1.

[0060] Example 11

[0061] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0062] The nylon 6 gold masterbatch of this embodiment is composed of the following raw materials in parts by weight: 7 parts of metal complex, 1 part of dispersant, and 85 parts of bright nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

[0063] The specification of the nylon 6 golden fiber prepared in this embodiment is 144D / 24F, and the DPF number is 6.

[0064] Example 12

[0065] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0066] The nylon 6 gold masterbatch of this embodiment is composed of the following raw materials in parts by weight: 14 parts of metal complex, 3 parts of dispersant, and 92 parts of bright nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

[0067] The specification of the nylon 6 golden fiber prepared in this embodiment is 24D / 24F, and the DPF number is 1.

[0068] Example 13

[0069] This embodiment provides a high-gloss nylon 6 golden fiber, which is basically the same as that of embodiment 3, except that:

[0070] The nylon 6 gold masterbatch of this embodiment is composed of the following raw materials in parts by weight: 14 parts of metal complex, 3 parts of dispersant, and 92 parts of bright nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

[0071] The specification of the nylon 6 golden fiber prepared in this embodiment is 144D / 24F, and the DPF number is 6.

[0072] Comparative Example 1

[0073] This comparative example provides a nylon 6 golden masterbatch, which differs from Example 1 in that the raw material ratio is different. The nylon 6 golden masterbatch in this comparative example is composed of the following raw materials in parts by weight: 5 parts of metal complex, 0.5 parts of dispersant, and 94.5 parts of bright nylon 6 chips.

[0074] Comparative Example 2

[0075] This comparative example provides a nylon 6 fiber, which is different from Example 3 in that the raw materials of this comparative example include the nylon 6 golden masterbatch of Comparative Example 1.

[0076] In this comparative example, the nylon 6 fiber is composed of the following raw materials in parts by weight: 10 parts of nylon 6 golden masterbatch and 90 parts of bright nylon 6 chips.

[0077] In this comparative example, the specification of the prepared nylon 6 fiber is 24D / 24F, and the DPF number is 1.

[0078] Comparative Example 3

[0079] This comparative example provides a nylon 6 fiber, which is different from Example 3 in that no nylon 6 golden masterbatch is added to the raw materials of this comparative example.

[0080] In this comparative example, the nylon 6 fiber is composed of the following raw materials in parts by weight: 100 parts of bright nylon 6 chips.

[0081] In this comparative example, the specification of the prepared nylon 6 fiber is 24D / 24F, and the DPF number is 1.

[0082] Implementation effect evaluation:

[0083] The following is a detailed test of the fibers obtained in Examples 4-9 and Comparative Examples 2-3 to further illustrate the excellent effects achieved by the present invention:

[0084] The yarn winding color cards prepared in Examples 4-9 and Comparative Examples 2-3 were color-measured, and the measured Lab values are shown in the following table:

[0085] Table 1 Statistics of yarn color measurement results

[0086]

[0087]

[0088]

[0089] It can be seen from the above table that as the DPF number increases, the yarn color gradually develops towards darker, redder, and yellower.

[0090] From the data of Examples 10-14, it can be seen that when the content of the complex is low, the overall color of the yarn is lighter than the "gold" color; when the content of the complex is high, the overall color of the yarn is darker than the "copper" color. In both cases, the metallic color cannot be simulated well.

[0091] From the data of Example 4 and Comparative Example 2, it can be seen that a lower amount of complex addition cannot achieve a "golden" color, and a color closer to light yellow can be obtained.

[0092] From the data of Example 4 and Comparative Example 3, it can be seen that the yarn obtained by adding the complex obtains a "golden" color, and the dispersant cannot make the yarn obtain a metallic color.

[0093] The yarn prepared in Example 4 was tested for extractable heavy metals, color fastness to perspiration, color fastness to soaping, color fastness to light, and composite color fastness to light and sweat. The detection method for extractable heavy metals was T / ZLP JFJ-029, and reference was made to ISO105E04:2013 artificial acid sweat extraction, and analysis was performed using ICP-OES. The test results are shown in the following table:

[0094] Table 2 Statistics of extractable heavy metal detection results

[0095]

[0096] The test method for color fastness to perspiration is GB / T 3922-2013, and the test results are shown in the following table:

[0097] Table 3 Statistics of color fastness to perspiration test results

[0098]

[0099]

[0100] The test method for color fastness to soaping is: GB / T 3921-2008, and the test results are shown in the following table:

[0101] Table 4 Statistics of color fastness to soaping test results

[0102]

[0103] The test method for color fastness to light is: ISO 105-B02:2014, and the test results are shown in the following table:

[0104] Table 5 Statistics of light fastness test results

[0105]

[0106] The test method for the composite color fastness to light and perspiration is GB / T 14576-2009, and the test results are shown in the following table:

[0107] Table 6 Statistics of test results of composite color fastness to light and sweat

[0108]

[0109] It can be seen from Tables 2 and 3 that the heavy metal content in the yarn meets the detection standards, and the color fastness to perspiration reaches above level 4. It can be seen from Tables 3-6 that the color fastness to soaping, color fastness to light, and color fastness to light and sweat of the yarn all reach level 4.

[0110] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A high gloss nylon 6 golden masterbatch, characterized in that: The invention is composed of the following raw materials in parts by weight: 7-14 parts of metal complex, 1-3 parts of dispersant, and 85-92 parts of bright nylon 6 chips, wherein the molecular formula of the metal complex is C 34 H 24 CrN8NaO6.

2. The high-gloss nylon 6 golden masterbatch according to claim 1, characterized in that: The nylon 6 golden masterbatch has a melt index of 44-45 g / 10 min, a relative viscosity of 2.4-2.5, a water content of 500-800 ppm, a terminal amino group content of 30-35 mmol / kg, and a terminal carboxyl group content of 64-67 mmol / kg.

3. The method for preparing a high-gloss nylon 6 golden masterbatch according to claim 1 or 2, characterized in that: The following steps are involved: S11: Weigh the metal complex and dispersant according to the set ratio, premix them and put them into the buffer bin, put them into the hopper and stir them with a spiral until they are evenly mixed to obtain a premix; S12: feeding the bright nylon 6 chips from the main feeding port and the premix obtained in step S11 from the side feeding port, mixing the bright nylon 6 chips and the premix evenly, and melt-mixing them in a twin-screw extruder to obtain a nylon 6 golden masterbatch melt; S13: The nylon 6 golden masterbatch melt is extruded from the outlet of the twin-screw extruder to obtain nylon 6 golden masterbatch melt strips. The strips are cooled in a water cooling tank and then enter a pelletizer for pelletizing, vibratory screening and blast drying to obtain the nylon 6 golden masterbatch.

4. The method for preparing a high-gloss nylon 6 golden masterbatch according to claim 3, characterized in that: In step S12, the twin-screw extruder is provided with nine temperature zones, and the temperature intervals are 225°C, 235°C, 235°C, 215°C, 205°C, 195°C, 185°C, 175°C, and 165°C, respectively, and the head temperature is: 230°C.

5. A high-gloss nylon 6 golden fiber, characterized in that: The raw material of the nylon 6 golden fiber includes the nylon 6 golden masterbatch according to claim 1 or 2, or includes the nylon 6 golden masterbatch prepared according to the preparation method according to claim 3 or 4.

6. The high-gloss nylon 6 golden fiber according to claim 5, characterized in that: The invention is composed of the following raw materials in parts by weight: 7-14 parts of nylon 6 golden masterbatch, 1-3 parts of dispersant, and 85-92 parts of bright nylon 6 chips.

7. The method for preparing a high-gloss nylon 6 golden fiber according to claim 6, characterized in that: The following steps are involved: S21: Weigh nylon 6 golden masterbatch and bright nylon 6 chips according to a set ratio, dry them separately, feed the bright nylon 6 chips from the main feeding port, add the nylon 6 golden masterbatch to the buffer bin, lower it into the hopper, stir it evenly with a spiral, feed it from the side feeding port, mix it evenly, and then compound and melt it in a twin-screw extruder to obtain a composite melt; S22: The composite melt obtained in step S21 is metered by a metering pump and then enters a spinning manifold, and is spun through the components to obtain a composite filament bundle, which is then subjected to slow cooling, monomer suction, side-blowing cooling, bundling and oiling, secondary cooling in the tunnel, stretching and shaping, and winding to obtain the nylon 6 golden fiber with high gloss.

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