CN106868669B - A kind of polytetrafluoroethylene fibre/woolen spinning yarn and preparation method thereof - Google Patents

Abstract

The present invention relates to a kind of polytetrafluoroethylene fibre/woolen spinning yarns and preparation method thereof, and by mass percentage, polytetrafluoroethylene PTFE 20-50%, wool fibre accounts for 80-50%.Preparation: by polytetrafluoroethylene PTFE fiber after antistatic agent treatment, shredding with and good wool carry out mixing shredding, then comb rove is made, using spinning process to obtain the final product.Spinning line of the invention carries out in slubbing equipment, and process is short, and gained scribbled had not only had that wool fibre soft yarns are fluffy, limber performance, but also the flame retardant property of yarn is assigned with PTFE fiber.

Description

A kind of polytetrafluoroethylene fiber/wool spun yarn and preparation method thereof

technical field

The invention belongs to the field of slub yarn and its preparation, in particular to a polytetrafluoroethylene fiber/wool slub yarn and a preparation method thereof.

Background technique

Polytetrafluoroethylene (PTFE) fibers have the advantages of excellent heat resistance and thermal stability, chemical corrosion resistance, low friction coefficient, flame retardancy, etc., and are used in high-temperature filtration, protective clothing, waterproof coatings and other fields, but due to PTFE's non-polar molecular structure, excellent electrical insulation and low moisture absorption make it easy to accumulate a large amount of negative charges during the friction process, and it is difficult for PTFE fibers to be given stable crimps, which limits the fiber's ability to spin field applications. Wool fiber is soft and comfortable, has good warmth retention, good curl elasticity, flame retardant, and good hygroscopicity, but it is positively charged by friction, and wool fabric is easy to shrink and has poor dimensional stability.

The PTFE fiber is mixed with the wool fiber for woolen processing. The good crimp elasticity of the wool increases the cohesion between the fibers, and uses the order of the electrostatic sequence to neutralize the static charges of different polarities generated by friction, so that the spinning The yarn is processed smoothly, and the developed blended yarn and fabric not only maintain the softness and elasticity of wool, but also take advantage of the aging resistance and chemical corrosion resistance of PTFE fiber, so that the product is flame retardant and durable.

Contents of the invention

The technical problem to be solved by the present invention is to provide a polytetrafluoroethylene fiber/wool slub yarn and its preparation method, the spinning process is carried out on slub equipment, the process is short, and the obtained blended yarn has the softness of wool fiber yarn Fluffy and elastic performance, but also has the flame retardancy, smoothness and cool feeling of PTFE fiber to the yarn.

In the polytetrafluoroethylene fiber/wool spun yarn of the present invention, the polytetrafluoroethylene PTFE accounts for 20-50% and the wool fiber accounts for 80-50% by mass percentage. The length of the PTFE fiber used in spinning can be 35-60mm.

A kind of preparation method of polytetrafluoroethylene fiber/wool spun yarn of the present invention comprises:

The polytetrafluoroethylene PTFE fiber is treated with an antistatic agent, and after opening, it is mixed and opened with the reconciled wool, and then carded to make a roving, and then the polytetrafluoroethylene fiber/wool woolen yarn is obtained through a spinning process.

The PTFE fiber is obtained through a membrane splitting process, and the fiber length is 35-60mm.

The antistatic agent treatment is as follows: the PTFE fiber is sprayed with an antistatic agent solution with a weight concentration of 0.1% to 5%, and the temperature is 20±1°C and the humidity is 65±2%. 24h.

The antistatic agent is cationic or anionic antistatic agent.

The antistatic agent solution contains at least one of a smoothing agent, a penetrating agent and a bulking agent. The smoothing agent, penetrating agent and fluffing agent are used to improve the treatment effect.

The reconciled wool is obtained by blending wool, wherein the blending treatment is specifically: the 70s wool top is opened twice evenly, and then sprayed with a weight percentage concentration of 1.5%-3% and wool oil, 2%-3% flat Add a mixed solution of 0.5%-1% cationic antistatic agent and 15% water, and simmer for 2h-5h, and the percentage concentration of neutralized hair oil, cationic antistatic agent and water are calculated according to the weight of wool Obtained, all are percentage concentrations relative to the weight of wool.

The mixed opening is as follows: the PTFE fiber and the reconciled wool are fed into the knitting machine by the way of layering and directly taken, and the opening process is performed 1-2 times, and stored for 4-8 hours after opening. Preferably: in order to make the fibers mixed and opened evenly, two opening procedures are adopted.

The roving made by carding is as follows: a roving carding machine equipped with 4 carding groups is used to false twist into roving, and the roving number is 80-100tex. The spinning process is as follows: feed the roving into the mule spinning frame, the total draft ratio is 1-1.5 times, the spun yarn twist is 300 twist/m, the spun yarn number is 60-80tex, and the spun yarn twist direction is Z twist.

The obtained polytetrafluoroethylene fiber/wool spun yarn has a linear density of 60-80 tex, a breaking strength of 180-250 cN, and a breaking elongation of 8-14%.

Beneficial effect

The invention adopts PTFE fiber and wool fiber to be mixed and spun in the woolen system, overcomes the shortcoming that PTFE fiber is only used in the non-woven field, and broadens the application field of PTFE fiber; the production method adopted can be used in the woolen system without adjustment equipment, and the operation process is short; the developed PTFE fiber/wool slub yarn has a certain flame retardancy, which meets the needs of public places such as schools, and the surface of the yarn is smooth and has a high touch cool feeling.

Description of drawings

Figure 1 is the appearance of PTFE/wool 10/90 woolen knitted fabric.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

In the embodiment: polytetrafluoroethylene (PTFE) fiber (produced by Changzhou Xingcheng Polymer Material Co., Ltd.), the specification is 3.89dtex * 38mm.

Example 1

A 1/15Nm PTFE/wool (10/90) blended yarn was spun.

First, the PTFE fiber is treated with an antistatic agent, and the PTFE fiber is sprayed with a solution of 0.5% potassium monoester phosphate antistatic agent (TF-481) by weight, and the PTFE fiber is sprayed at a temperature of 20 ± 1 °C and a humidity of 65 ± Under the condition of 2%, stew for 24h. Secondly, the wool is treated with wool, and the 70s wool top is evenly opened twice, and then sprayed with a mixed solution of 2.8% wool oil, 2.5% Pingpingjia, 1% antistatic agent (Sandianling) and 15% water, and put it in a simmer. 2h. Then, the PTFE fiber treated with antistatic agent is opened and the reconciled wool is fed into the wool machine in a ratio of 10/90 in a ratio of 10/90, and the wool machine is opened evenly. Loosening process, after opening, store for 8 hours before going on the machine. Then the mixed fiber is fed into a woolen carding machine with 4 carding groups and false twisted into roving, the number of roving is 95tex. Then the roving is fed into the mule spinning frame, the total draft ratio is 1.36 times, the twist of the spun yarn is 300 twists/m, the number of the spun yarn is 66.7tex, and the twist direction of the spun yarn is Z twist.

The linear density of the obtained yarn is 1/14.4Nm, the breaking strength is 204.1cN, the elongation at break is 11.4%, the appearance of the fabric is smooth, the LOI value of the knitted fabric woven from the spun yarn is 25%, and the flame retardancy meets the requirements for use , and the knitted fabric has a strong cool feeling.

Claims (6)

1. a kind of polytetrafluoroethylene fibre/woolen spinning yarn preparation method, it is characterised in that: by mass percentage, polytetrafluoro Ethylene PTFE is 20-50%, and wool fibre accounts for 80-50%；

Include: by polytetrafluoroethylene PTFE fiber after antistatic agent treatment, shredding with and good wool carry out mixing shredding, so Rove is made in combing afterwards, obtains polytetrafluoroethylene fibre/woolen spinning yarn using spinning process；

The PTFE fiber is obtained by split film process, fibre length 35-60mm；

Described and good wool is that hair carries out and hair handles to obtain, and neutralizes hair processing specifically: 70s wool top is equal through shredding twice After even spraying weight concentration be 1.5%-3% and crude oil, 2%-3% peregal, 0.5%-1% cationic antistatic agent and The mixed solution of 15% water, and boil in a covered pot over a slow fire and put 2-5h；

Rove is made in the combing are as follows: using the woolen card false twisting for having 4 combing groups at rove, rove number 80- 100tex。

2. a kind of preparation method of polytetrafluoroethylene fibre/woolen spinning yarn according to claim 1, it is characterised in that: The antistatic agent treatment are as follows: use weight concentration to spray for 0.1%~5% antistatic agent solution to PTFE fiber, And it is boiled in a covered pot over a slow fire under conditions of temperature is 20 ± 1 DEG C, humidity is 65 ± 2% and puts 12-24h.

3. a kind of preparation method of polytetrafluoroethylene fibre/woolen spinning yarn according to claim 2, it is characterised in that: Antistatic agent in the antistatic agent treatment step is cationic or anionic antistatic agent.

4. a kind of preparation method of polytetrafluoroethylene fibre/woolen spinning yarn according to claim 2, it is characterised in that: Contain at least one of smooth agent, bleeding agent and leavening agent in the antistatic agent solution.

5. a kind of preparation method of polytetrafluoroethylene fibre/woolen spinning yarn according to claim 1, it is characterised in that: The mixing shredding are as follows: by PTFE fiber with and good wool to feed mixing willow shredding in such a way that laying directly takes uniform, into 1-2 shredding process of row, stores 4-8h after shredding.

6. a kind of preparation method of polytetrafluoroethylene fibre/woolen spinning yarn according to claim 1, it is characterised in that: The spinning process are as follows: rove is fed into mule, 1-1.5 times of total draft multiple, ramie yarn twist is 300 twirls/m, spun yarn Number 60-80tex, spun yarn orientation are Z twirl.