JPS62162079A - Antistatic and antistaining fiber structure and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field of the Invention) The present invention relates to a fibrous structure having antistatic properties and antifouling properties (hereinafter sometimes abbreviated as SR properties) and a method for producing the same.

(Prior art) In the past, antistatic processing and SR processing of textile products have been considered important regardless of whether they are synthetic or natural fibers, but simply adding antistatic agents or SR agents to fibers does not provide excellent control. Electric, SR
Sex is not achieved. Attempts have therefore been made to make the fibers hydrophilic by polymerization, but so far nothing has been satisfactory. For example, a method in which a hydrophilic polymer with increased affinity for polyester is applied by an in-bath treatment method using a dyeing machine or the like (Japanese Patent Publication No. 53-47
437 Publication) and the method using pad steam (Special Publication No. 5
1-2559), but there is a limit to the performance that can be obtained, especially the washing durability of the performance, and even if one performance (for example, antistatic property) is satisfactory. Other properties such as SR properties were poor, and color fastness and texture were adversely affected, resulting in insufficient performance. Furthermore, the modification treatment by graft polymerization (Japanese Patent Publication No. 10511/1983) has the fatal disadvantage of high cost and hardening of the texture. Attempts have been made to modify the surface of fiber structures by low-temperature plasma treatment, but although the SR properties cannot be improved, the antistatic performance is poor. In addition, as an attempt to impart antistatic properties and SR properties using low-temperature plasma treatment, there is a method in which an antistatic agent is applied by dry heat treatment and then low-temperature plasma treatment is applied (Japanese Patent Application Laid-Open No. 60-65180). This cannot be said to be perfect either, as it does not have sufficient washing durability.

(Problems to be Solved by the Invention) In view of the shortcomings of the prior art, it is an object of the present invention to easily and reasonably stably impart antistatic properties and SR properties to natural fiber or synthetic fiber structures. The present invention provides a method and a fibrous structure obtained in this manner.

(Means for Solving the Problems) The object of the present invention is to apply a treatment liquid containing a hydrophilic component having ethylene glycol units in its molecular chain to a fiber structure, and then to perform a steam treatment and then a low-temperature plasma treatment. A method for producing a fiber structure with antistatic properties and SR properties, characterized in that the entire surface of the single fiber is covered with a polyethylene glycol resin, and the frictional charging voltage after 30 washes (washing conditions will be described later) is 4000 V or less. (Measurement method is JISL-109
4), and is achieved by a fiber structure having antistatic properties and Sa properties of grade 2 or higher (SR evaluation method will be described later). First, the method of the present invention will be explained.

The fiber structure of the present invention may be any of natural fibers such as wool, silk, cotton, and hemp, semi-synthetic fibers such as acetate and rayon, and synthetic fibers such as polyamide, polyester, and polyacrylic. It may be knitted or woven.

Fiber structures made of such fibers include all forms of cotton, tow, sliver, thread, fabric, and felt.

In the present invention, the fiber structure can be further impregnated or coated with a polymeric elastomer resin such as urethane resin, acrylic resin, silicone resin, fluorine resin, etc. , antioxidants, etc. may be included.

The treatment liquid applied to such a fibrous structure is a hydrophilic component having ethylene glycol units + CH2-CH2-0+n in its molecular chain, particularly when n is 5 to 30 and has two or more polymerizable double bonds. shows a remarkable effect. Specific examples thereof include polyethylene glycol diacrylate, polyethylene glycol polypropylene glycol dimethacrylate, and polyethylene glycol-(dimethacrylokydimethyl) acetate acrylate.

When expressed as a general formula, the compound of the following formula has a particularly large practical effect.

0=to Here, R1 is hydrogen or a methyl group, n = 5-30.

A compound containing two or more such polymerizable double bonds exhibits remarkable effects when used in combination with a polymerization initiator. As the polymerization initiator, common vinyl polymerization initiators such as ammonium persulfate, potassium persulfate, benzoyl peroxide, etc. are used as appropriate.

In this way, the treatment liquid containing the hydrophilic component having ethylene glycol units is applied to the fibrous structure by an appropriate method. Examples include a dipping method, a pad method, a spray method, and a printing method. The subsequent steaming treatment does not require complicated techniques such as activating the fibers themselves, and a treatment solution consisting of an aqueous solution or an organic solvent solution of the compound shown in the above general formula is attached to the fibers and polymerized. All you have to do is steam it at the required temperature. Due to the coating strength and processing time, air entrainment is 2.
If the polymerization initiator is 0% or less, and a redox-based polymerization initiator is used, the desired coating can be changed at a lower temperature, but due to the stability of the solution and processing conditions, it is carried out at the temperature of 80 to 140°C as mentioned above. is preferable.

The coating referred to in the present invention is applied to the fiber surface of the fiber structure by 0.01~
A coating with a thickness of 10μ, especially 0.1 to 3μ is preferred.

If the coating is too small, sufficient effect will not be obtained;
Anything above will spoil the texture and cannot be said to be practical.

The low-temperature plasma treatment in the present invention means exposing the fiber to plasma discharge generated by applying a high voltage. There are various forms of such discharge, such as spark discharge, corona discharge, and glow discharge, but any form of discharge does not matter as long as it does not damage the fibers.
Glow discharge is particularly preferred because of its uniform discharge and excellent activation effect.

Glow discharge is less than 5 Q torr, even 20 t
orr or less, particularly preferably 0.01 to l Q tor
It is generated by applying a high voltage in a gas atmosphere under a reduced pressure of That's about it.

Examples of gases that give an activation effect include Ar, N2
, He%CO2, co:α@s CF4, N20, air, etc., but plasma treatment in a system in which J oxygen does not exist has an effect on washing durability.

Although the fibrous structure thus obtained has extremely durable antistatic and SR properties, it has a characteristic that its texture is almost the same as before treatment. The present invention has the advantage that such a fiber structure can be provided extremely simply and stably.

〔Example〕

The present invention will be described in more detail below with reference to Examples.

Example 1 A textured yarn fabric (75 denier, 36 filaments) made of 100% polyester was scoured with 29/l of nonionic activator and 12/l of soda ash. This fabric was thoroughly washed with water and then dried at 130°C.

Next, this fabric was immersed in a pad bath made by adding 0.5% by weight of ammonium persulfate as a polymerization initiator to a 2-by-weight aqueous solution of polyethylene glycol diacrylate having polyethylene glycol units with a molecular weight of 1200, and then uniformly coated with a padder. The amount of adhesion was adjusted to 80% by weight, and then it was heated with steam at 105° C. for 5 minutes, thoroughly washed with water, and dried. Thereafter, this fabric was treated by exposing it to low temperature plasma obtained under the following conditions.

(Low-temperature plasma treatment conditions) Gas: Ar5QCC/min Decompression degree: 0.8 torr Applied voltage: 1.5 KV Treatment rate: 20 crn/min For comparison, the blank (unprocessed product, Comparison-1) was subjected to the above steam treatment. (Comparison-2), plasma treatment only (Comparison-3), and instead of steam treatment, padding was performed, followed by drying at 130°C, and the same plasma treatment as in Example-1 was performed. Four levels were prepared: (Comparison-4).

Example-2 A dimethacrylate aqueous dispersion having polyethylene glycol units with a molecular weight of 3000 (
Collect 10% of the resin solid content (40 cm) based on the weight of the fabric,
It was treated at 130° C. for 40 minutes using a closed dyeing machine, thoroughly washed with water, and then dried. In other respects, the same plasma treatment as in Example-1 was performed. Further, the antistatic properties and SR properties of the obtained fabric were measured by the following methods and are shown in Table 1.

〔laundry〕

“After heating 2 tons and 7 tons of an aqueous solution of Zabu [anionic detergent made by Kao Soap] to 45℃, loading it with the sample into a garden washing machine, washing for 5 minutes, washing with water for 2 minutes, and drying 1
This cycle is repeated 30 times, with one cycle lasting 0 minutes.

(Sa) Contamination consisting of 12.5 parts each of stearic acid, oleic acid, hydrogenated oil, and olive oil, 8.5 parts of cetyl alcohol, 21.5 parts of solid paraffin, 5.0 parts of cholesterol, and 15.0 parts of carbon black. agent and “Super Zabu C”
(Anionic synthetic detergent manufactured by Kao Soap)) were mixed at a volume ratio of 3 Nia, and diluted with water to 0.075% by weight.

The temperature of this diluted solution is raised to 40° C., and the fabric is immersed in it for 20 minutes. Next, this contaminated fabric is washed under running water for 1 minute, and then dried.

Next, determination was made using the contamination gray scale specified in JISL-0821.

[Antistatic property]

Frictional charging voltage: JISL-1094 (20℃×3O-RH
).

(Effect of the invention) The present invention has excellent antistatic properties and satisfies SR performance at the same time.
To stably provide a fiber structure that has excellent washing durability and is suitable as a lining for working clothes and Japanese clothing.

Claims (1)

[Claims] 1. The entire surface of the single fiber is covered with polyethylene glycol resin, and the frictional charging voltage after 30 washes is 4000V.
In the following, an antistatic and antifouling fibrous structure is characterized by having an SR property of grade 2 or higher. 2. Antistatic and SR fibrous structure characterized by applying a treatment liquid containing a hydrophilic component having ethylene glycol units in the molecular chain to the fibrous structure, followed by steaming treatment and then low-temperature plasma treatment. How things are manufactured. 3. The method according to claim 2, wherein the hydrophilic component has 5 to 30 ethylene glycol units in its molecular chain. 4. The method according to claim 3, wherein the hydrophilic component has two or more polymerizable double bonds.