Nylon BCF carpet yarn and preparation method thereof

Abstract

The invention relates to the technical field of nylon, in particular to nylon BCF carpet yarn and a preparation method thereof. The preparation raw materials comprise nylon, colored master batch and an auxiliary agent, and the auxiliary agent comprises amino silicon oil, dimethyl silicon oil, a silane coupling agent, a catalyst and water. The prepared nylon BCF carpet yarn can be comparable with a silk carpet, compared with common nylon yarn, the fiber grade is improved, the defect that natural silk fiber resources are short is overcome, the manufacturing procedures are few, energy is saved, environment friendliness is achieved, high efficiency is achieved, and sewage discharge in a large amount of dyeing is particularly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of nylon, and in particular to a nylon BCF carpet yarn and a preparation method thereof. Background Art

[0002] Carpet silk materials can generally be divided into natural fibers, blended fibers and chemical fiber filaments. Among natural fibers, silk fibers are expensive, delicate, smooth and comfortable to the touch, but have high production costs, complex processes, are not stain-resistant, not wear-resistant, and difficult to clean; blended fibers have complicated dyeing processes, are not environmentally friendly, are prone to hair loss, are difficult to clean, and have a poor feel; chemical fiber filaments are generally divided into three categories: polypropylene, polyester, and nylon, which have the advantages of being wear-resistant, non-corrosive, non-insect-resistant, and non-mildew-resistant. Nylon BCF (bulk continuous filament) is economical and has good resilience, but the feel cannot compare to silk.

[0003] Chinese invention patent CN104120501A discloses a method for producing negative ion BCF fiber, the steps of which include: A. preparing negative ion masterbatch: 1) cutting and grinding ordinary BCF fiber-polymer raw materials into powder for standby use; 2) stirring and mixing the powdered ordinary BCF fiber-polymer raw materials, nano-grade negative ion powders and additives; 3) granulating the stirred mixture to obtain negative ion masterbatch; B. preparing negative ion BCF fiber: firstly mixing the negative ion masterbatch with ordinary BCF fiber-polymer raw materials to obtain a mixed material. The negative ion BCF fiber prepared by this invention is suitable for carpet weaving, but does not solve the problems of surface gloss, delicate feel and softness of BCF colored yarn. Summary of the invention

[0004] The first aspect of the present invention provides a nylon BCF carpet yarn, wherein the raw materials for preparing the nylon BCF carpet yarn include nylon, color masterbatch and auxiliary agent, wherein the components of the auxiliary agent include amino silicone oil, dimethyl silicone oil, silane coupling agent, catalyst and water.

[0005] Preferably, the nylon includes nylon 6 and / or nylon 66.

[0006] Calculated by weight percentage, the components of the auxiliary agent include: 8-25% amino silicone oil, 10-25% dimethyl silicone oil, 10-25% silane coupling agent, 5-15% catalyst, and water making up the balance.

[0007] Preferably, the components of the auxiliary agent include, by weight percentage: 10-20% amino silicone oil, 15-25% dimethyl silicone oil, 10-20% silane coupling agent, 8-12% catalyst, and water making up the balance.

[0008] Preferably, the weight ratio of the amino silicone oil to the dimethyl silicone oil is 1:(1-2).

[0009] Further preferably, the weight ratio of the amino silicone oil to the dimethyl silicone oil is 1:(1-1.5).

[0010] The present application has found that the components of the auxiliary agent include: 8-25% amino silicone oil, 10-25% dimethyl silicone oil, 10-25% silane coupling agent, 5-15% catalyst, and water to make up the balance. The mechanical properties of carpet yarn can be improved. It may be that the addition of specific auxiliary agents improves the adsorption and orientation, film formation and lubrication between nylons. Further research has found that the weight ratio of amino silicone oil and dimethyl silicone oil is 1: (1-2), which can improve the wear resistance and softness of carpet yarn. It may be that the amino group in the amino silicone oil can interact with the functional groups such as hydroxyl and carboxyl in the nylon slices to form a strong adsorption and orientation. This interaction allows the amino silicone oil to be evenly distributed in the nylon slices. At the same time, due to the weak intermolecular force of dimethyl silicone oil, low viscosity, and low surface tension, it is easy to form a uniform film with lubricating effect on the surface of the nylon slice, thereby improving the penetration performance of the auxiliary agent between fibers.

[0011] The additive is added in an amount of 0.5-3 wt % in the nylon BCF carpet yarn.

[0012] Preferably, the additive is added in an amount of 1-2 wt % in the nylon BCF carpet yarn.

[0013] The color masterbatch is added in an amount of 0.5-3 wt % in the nylon BCF carpet yarn.

[0014] Preferably, the amount of the colored masterbatch added to the nylon BCF carpet yarn is 1-2 wt%.

[0015] Preferably, the side chain of the amino silicone oil has a diamine group.

[0016] The amino silicone oil has an ammonia value of 0.4-0.7 mmol / g.

[0017] Preferably, the amino value of the amino silicone oil is 0.5-0.6 mmol / g.

[0018] The viscosity of the dimethyl silicone oil at 25°C is 400-800 mm 2 / s.

[0019] Preferably, the viscosity of the dimethyl silicone oil at 25°C is 500-700 mm 2 / s.

[0020] Preferably, the silane coupling agent is selected from at least one of the following brands: KH551, KH172, KH560, KH570.

[0021] Preferably, the catalyst is purchased from Suzhou Aomekai Masterbatch Co., Ltd., model: LO-001.

[0022] The preparation method of the auxiliary agent is as follows: all components are mixed, and then hot-mixed and cross-linked at 100-140° C. to obtain the auxiliary agent.

[0023] A second aspect of the present invention provides a method for preparing nylon BCF carpet yarn, comprising the following steps:

[0024] Pre-spinning processing: nylon and color masterbatch are mixed, melt extruded and spun in sequence, additives are added after cooling, and stretching, deformation and networking are performed in sequence, and the nylon bulked yarn is rolled into a tube;

[0025] Post-spinning processing: The nylon bulked yarn is twisted and plied, and after shaping, the nylon BCF carpet yarn is obtained.

[0026] The melt extrusion comprises zone one, zone two, zone three and zone four in sequence, the melting temperature of zone one is 260-270°C, the melting temperature of zone two is 265-270°C, the melting temperature of zone three is 270-275°C, and the melting temperature of zone four is 270-275°C.

[0027] Preferably, the melting temperature of the first zone is 262-268°C, the melting temperature of the second zone is 268-270°C, the melting temperature of the third zone is 270-273°C, and the melting temperature of the fourth zone is 270-273°C.

[0028] The cooling adopts wind temperature cooling, and the wind temperature is 20-30°C.

[0029] Preferably, the wind temperature is 21-25°C.

[0030] The temperature of the stretching deformation is 150-240°C.

[0031] Preferably, the temperature of the stretching deformation is 180-200°C.

[0032] The stretching deformation specifically includes: the yarn after adding the auxiliary agent enters the hot stretching system, the feeding roller speed is 880-950m / min, the feeding roller temperature is 58-68°C, then enters the pre-stretching roller, and finally reaches the main stretching roller for stretching, the pre-stretching roller speed is 900-970m / min, the pre-stretching roller temperature is 78-88°C, the main stretching roller speed is 2300-2350m / min, the main stretching roller temperature is 150-175°C, the speed of the guide roller one is 2100-2150m / min, and the speed of the guide roller two is 2120-2170m / min.

[0033] The speed of the package is 2000-2300 m / min.

[0034] Preferably, the speed of the package is 2150-2200 m / min.

[0035] Beneficial Effects

[0036] 1. The components of the auxiliary agent include: 8-25% amino silicone oil, 10-25% dimethyl silicone oil, 10-25% silane coupling agent, 5-15% catalyst, and water to make up the balance. It can improve the mechanical properties of carpet yarn.

[0037] 2. The weight ratio of amino silicone oil to dimethyl silicone oil is 1:(1-2), which can improve the wear resistance and softness of carpet yarn.

[0038] 3. The nylon BCF carpet yarn prepared in the present application has excellent ability to resist dirt from daily necessities.

[0039] 4. The nylon BCF carpet yarn prepared in this application is comparable to silk carpets, improves the fiber grade compared to ordinary nylon yarn, and makes up for the shortage of natural silk fiber resources.

[0040] 5. The nylon BCF carpet yarn of the present application has fewer manufacturing processes, is energy-saving, environmentally friendly, and highly efficient, and can reduce wastewater discharge during dyeing. DETAILED DESCRIPTION

[0041] Example 1

[0042] A nylon BCF carpet yarn is prepared from 97% nylon 6 (BE3280 produced by Jiangsu Hongsheng New Materials Co., Ltd.), 1.5% colored masterbatch (produced by the company) and 1.5% auxiliary agent by weight percentage.

[0043] The components of the additives are as follows: amino silicone oil (Shandong Dayi New Materials Co., Ltd., N322) 15%, dimethyl silicone oil (viscosity 600mm at 25°C) 15%, 2 / s, Jiangxi Xinghuo New Materials Co., Ltd., 201-600) 20%, silane coupling agent (KH172) 15%, catalyst (Suzhou Aomekai Masterbatch Co., Ltd., LO-001) 10%, and water to make up the balance.

[0044] The preparation method of the auxiliary agent is as follows: all components are mixed, and then hot-mixed and cross-linked at 120° C. to obtain the auxiliary agent.

[0045] A method for preparing nylon BCF carpet yarn comprises the following steps:

[0046] Pre-spinning processing: nylon and color masterbatch are mixed, melt extruded and spun in sequence, additives are added after cooling, and stretching, deformation and networking are performed in sequence, and the nylon bulked yarn is rolled into a tube;

[0047] Post-spinning processing: The nylon bulked yarn is twisted and plied, and after shaping, nylon BCF carpet yarn (1350dtx / 288F*2, twist 230T / m) is obtained.

[0048] The melt extrusion includes zone one, zone two, zone three and zone four in sequence. The melting temperature of zone one is 265°C, the melting temperature of zone two is 270°C, the melting temperature of zone three is 272°C, and the melting temperature of zone four is 272°C.

[0049] The cooling is performed by wind temperature cooling, the wind temperature is 23°C, and the temperature of the stretching deformation is 190°C.

[0050] The stretching deformation is specifically as follows: the yarn after adding the auxiliary agent enters the hot stretching system, the feeding roller speed is 915m / min, the feeding roller temperature is 63°C, and then enters the pre-stretching roller, and finally to the main stretching roller for stretching, the pre-stretching roller speed is 940m / min, the pre-stretching roller temperature is 83°C, the main stretching roller speed is 2325m / min, the main stretching roller temperature is 162°C, the speed of the guide roller one is 2125m / min, and the speed of the guide roller two is 2150m / min.

[0051] The speed of the package is 2150 m / min.

[0052] Comparative Example 1

[0053] The specific implementation is the same as that of Example 1; the difference is that no auxiliary agent is used in Comparative Example 1.

[0054] Performance Testing Methods

[0055] 1. The nylon BCF carpet yarns prepared in the examples and comparative examples were subjected to performance tests, and the test data are listed in Table 1.

[0056] 2. Evaluation of stain resistance (4.5-5.0): The nylon BCF carpet yarn prepared in the example was tested with reference to AATCC 175-2003 Stain resistance: pile floor coverings. The test data are listed in Table 2.

[0057] Performance test data

[0058] Table 1

[0059]

[0060] Table 2

[0061] Serial number Dirt score Serial number Dirt score 1 coffee 5.0 7 Hot tea 5.0 2 Cola 5.0 8 wine 5.0 3 juice 5.0 9 Tomato sauce 5.0 4 Permanent ink 4.5 10 Iodine 5.0 5 Lipstick 5.0 11 Red Kraft Drink 5.0 6 Soil 5.0 12 mustard 5.0

Claims

1. A nylon BCF carpet yarn, characterized in that: The preparation raw materials include nylon, color masterbatch and auxiliary agent, and the components of the auxiliary agent include amino silicone oil, dimethyl silicone oil, silane coupling agent, catalyst and water.

2. The nylon BCF carpet yarn according to claim 1, characterized in that: Calculated by weight percentage, the components of the auxiliary agent include: 8-25% amino silicone oil, 10-25% dimethyl silicone oil, 10-25% silane coupling agent, 5-15% catalyst, and water making up the balance.

3. The nylon BCF carpet yarn according to claim 2, characterized in that: The additive is added in an amount of 0.5-3 wt % in the nylon BCF carpet yarn.

4. The nylon BCF carpet yarn according to claim 3, characterized in that: The side chain of the amino silicone oil contains a diamine group.

5. The nylon BCF carpet yarn according to claim 4, characterized in that: The viscosity of the dimethyl silicone oil at 25°C is 400-800 mm 2 / s.

6. The nylon BCF carpet yarn according to claim 1 or 5, characterized in that: The preparation method of the auxiliary agent comprises the following steps: mixing all components, and subjecting them to hot mixing and cross-linking at 100-140° C. to obtain the auxiliary agent.

7. A method for preparing the nylon BCF carpet yarn according to any one of claims 1 to 6, characterized in that: The following steps are involved: Pre-spinning processing: nylon and color masterbatch are mixed, melt extruded and spun in sequence, additives are added after cooling, and stretching, deformation and networking are performed in sequence, and the nylon bulked yarn is rolled into a tube; Post-spinning processing: The nylon bulked yarn is twisted and plied, and after shaping, the nylon BCF carpet yarn is obtained.

8. The method for preparing nylon BCF carpet yarn according to claim 7, characterized in that: The melt extrusion passes through zone one, zone two, zone three and zone four in sequence, the melting temperature of zone one is 260-270°C, the melting temperature of zone two is 265-270°C, the melting temperature of zone three is 270-275°C, and the melting temperature of zone four is 270-275°C.

9. The method for preparing nylon BCF carpet yarn according to claim 7, characterized in that: The cooling is carried out by wind temperature cooling, and the wind temperature is 20-30°C.

10. The method for preparing nylon BCF carpet yarn according to claim 9, characterized in that: The temperature of the stretching deformation is 150-240°C.

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