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Dyeing-free chinlon 66 industrial color silk and preparation method thereof

A technology of nylon and colored yarn, which is applied in the field of non-dyed nylon 66 industrial colored yarn and its preparation, which can solve problems such as defects in breaking strength and elongation at break, poor wear resistance, etc., and achieve small tension, uniform heating, and electrical insulation good sex effect

Inactive Publication Date: 2018-03-23
中维化纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the non-dyed yarns on the market are polyester and nylon 6. However, due to the differences in the molecular structure of polyester, nylon 6 and nylon 66, compared with nylon 66, the breaking strength and elongation at break of polyester and nylon 6 There are defects, and the wear resistance is also poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of red non-dyed nylon 66 industrial colored yarn, the thermal shrinkage rate of the red nylon 66 industrial colored yarn is 4.5%, the denier is 210D, the breaking strength is 8.05g / D, and the breaking elongation is 19%.

[0034] The specific steps of a preparation method of red non-dyed nylon 66 industrial colored yarn are:

[0035] Step 1. Transport the nylon 66 slices with an initial moisture content of 4200ppm and an initial relative viscosity of 2.20 to the drying tower, turn on the hot air circulation pump, and dry them in N with an oxygen content of ≤15ppm and a temperature of 160°C 2 Dry and polymerize under protection. The pressure inside the drying tower is 8kPa, the reaction temperature is 160°C, and the reaction time is 28h. After the reaction, dried nylon chips are obtained. The moisture content of the dried nylon chips is 350ppm, and the relative viscosity is 2.63;

[0036] Step 2: Carry out humidity-conditioning treatment on the nylon slices dried i...

Embodiment 2

[0045] A kind of green non-dyed nylon 66 industrial colored yarn, the thermal shrinkage rate of the green nylon 66 industrial colored yarn is 4.7%, the denier is 420D, the breaking strength is 8.1g / D, and the breaking elongation is 18.5%.

[0046] A kind of concrete steps of the preparation method of green non-dyed nylon 66 industrial dyed yarn are:

[0047] Step 1. Transport the nylon 66 slices with an initial moisture content of 3500ppm and an initial relative viscosity of 2.20 to the drying tower, turn on the hot air circulation pump, and put them in the N 2 Dry and polymerize under protection. The pressure inside the drying tower is 8kPa, the reaction temperature is 162°C, and the reaction time is 26h. After the reaction, dried nylon chips are obtained. The moisture content of the dried nylon chips is 250ppm, and the relative viscosity is 2.62;

[0048] Step 2: Carry out humidity-conditioning treatment on the nylon slices dried in step 1 to adjust the moisture content and ...

Embodiment 3

[0057] A kind of black non-dyed nylon 66 industrial colored yarn, the thermal shrinkage rate of the black nylon 66 industrial colored yarn is 4.8%, the denier is 840D, the breaking strength is 8.2g / D, and the breaking elongation is 18%.

[0058] A kind of concrete steps of the preparation method of black non-dyed nylon 66 industrial colored yarn are:

[0059] Step 1. Transport the nylon 66 slices with an initial moisture content of 3000ppm and an initial relative viscosity of 2.20 to the drying tower, turn on the hot air circulation pump, and dry them in N with an oxygen content of ≤15ppm and a temperature of 162°C. 2 Dry and polymerize under protection. The pressure inside the drying tower is 8kPa, the reaction temperature is 162°C, and the reaction time is 28h. After the reaction, dried nylon chips are obtained. The moisture content of the dried nylon chips is 230ppm, and the relative viscosity is 2.60;

[0060] Step 2: Carry out humidity-conditioning treatment on the nylon ...

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Abstract

The invention provides dyeing-free chinlon 66 industrial color silk and a preparation method thereof. The preparation method particularly comprises the following steps: 1, conveying a chinlon 66 sliceto a drying tower to dry; 2, performing humidifying treatment on the dried chinlon 66 slice and feeding into a pre-spinning cabin; 3, mixing master batches and high-viscosity chinlon 66 slice in thepre-spinning cabin into a mixed material, and performing melt extrusion on the mixed material by a screw extrusion machine; 4, enabling the equivalently distributed melt to enter a spinning box body and jetting silk; 5, cooling the melt fine flow jetted by a spinneret plate to form tows; and 6, after cooling, performing oiling, drafting and hot setting as well as networking and winding on the towsto obtain the dyeing-free chinlon 66 industrial color silk. By the method, original liquid dyeing spinning of the chinlon 66 is realized, the process route does not need dyeing and environmental pollution caused by chinlon 66 dyeing is avoided; and in the dyeing-free chinlon 66 industrial color silk, the thermal shrinkage rate is 4 to 7 percent, the denier number is 150 to 1260 D, the breaking strength is more than or equal to 8.0 g / D and the elongation at break is 17 to 21 percent.

Description

technical field [0001] The invention relates to a nylon 66 industrial colored yarn and a preparation method thereof, in particular to a non-dyed nylon 66 industrial colored yarn and a preparation method thereof. Background technique [0002] The wastewater discharge of the textile industry has always been at the forefront of my country's industrial manufacturing industry. It has always been a mountain on the heads of related production enterprises in the textile printing and dyeing and chemical fiber industries. With the strict implementation of the new national environmental protection law, the aftermath of fibers, yarns and fabrics Road dyeing requirements are becoming more and more stringent. The new environmental protection law has increased the requirements for the discharge of colored sewage and organic matter in the downstream, which has led to a sharp increase in dyeing costs. Non-dyed fiber reduces the consumption of raw materials, avoids environmental pollution, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D1/10D01D5/096D01D5/098D01D10/02D01F1/02D01F6/90D02J1/08
CPCD01D1/106D01D5/096D01D5/098D01D10/02D01D13/00D01F1/02D01F6/90D02J1/08
Inventor 王生健张浩杰徐建国陈海涛胡博虎红斌王小丰刘鹏
Owner 中维化纤股份有限公司
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