KR900005999B1 - Fibril method of conjugated fiber - Google Patents

Abstract

A method for fibrillating a conjugated fiber comprises (a) weaving polyamide/polyester conjugated fiber to produce a high density fabric of warp 75 d/36, weft 120d/36 and grey density 126 x 95 strand/inch, (b) adding 0.5-0.8 wt.% phenol, 0.001-0.1 wt.% NaOH, 0.007 wt.% quaternary ammonium salt and 0.01-0.02 wt.% nonionic surfactant to the fabric, and (c) heating up to 80 deg.C and rotating for 60 min. in the rotary washer.

Description

Fibrillation Method of Split Composite Fiber

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fibrillation method of split composite fibers, and more particularly, to a method of efficiently fibrillating polyamide / polyester based split composite fibers.

The conventional fibrillation method was a method of treating in benzyl alcohol or phenylethyl alcohol in an emulsion solution as known from Japanese Patent Publication No. 39-29636, Japanese Patent Application Laid-Open No. 50-4320, and the like. The treatment time required for washing was long, and the quality of the divided fibrils was not very good, and the cost was increased.

In the present invention, the fibrillation of the polyamide / polyester-based split composite fiber, it is possible to prevent the cost increase due to the water pressure reduction of the high-density fabric and the complicated process due to the fine split as in the prior art Is as follows.

In the present invention, a woven or knitted fabric made of polyamide / polyester-based split composite fibers is placed in a phenol solution containing an appropriate amount of alkali and treated at a temperature of 60 ° C. to 90 ° C. for 30 minutes to 60 minutes. At this time, if the amphoteric ammonium quaternary ammonium salt derivative is used in an amount of 0.001-0.005%, it is possible to completely divide the pile, the brushed fabric, and the knitted fabric.

The quaternary quaternary quaternary ammonium salt derivatives in the present invention facilitate the penetration of alkali into the crystal and non-crystalline regions of the fiber so that even monofilaments with non-uniform cross sections of multi-segment composite fibers can be easily separated regardless of their cross-sectional shape. Can be.

에 불과한 페놀을 사용하기 때문에 처리코스트를 떨어트릴 수 있으며, 페놀 사용량의 4-6배를 사용하고 또 벤질알콜의 유화 분사제로 계면 활성제를 다량(페놀의 10-20배) 사용함으로 말미암아 수세시간이 길어져서 총처리시간이 장시간 소요되었었던 종래의 벤질알콜에 의한 처리방법의 문제점을 해결할 수 있다. 또한 종래의 벤질알콜을 사용하는 방법은 수세를 충분하게 하지 않으면 염색지의 얼룩발생, 염료의 타링(Tarring)현상은 물론 강도저하, 거품에 의한 염색기 내에서의 포지의 엉킴발생이 심해 소포제를 사용한다든가 하는 문제점이 발생되는데 비해 페놀에 의한 분할은 벤질알콜에 의한 피브릴화의 문제점이 완전히 개선될 뿐만 아니라 특히 고밀도 직물에 의한 통기성 방수가공의 경우 본 발명의 멀티시그먼트의 피브릴화 과정에서 완전분리가 이루어지므로 내수압, 발수도면에서 목적하는 바의 가공효과를 얻을 수 있다.The invention of the benzyl alcohol price

Because it uses only a few phenols, the treatment cost can be reduced, and the washing time can be reduced by using 4-6 times the amount of phenol and using a large amount of surfactant (10-20 times the amount of phenol) as an emulsifying spray of benzyl alcohol. It is possible to solve the problem of the conventional method for treating with benzyl alcohol, which has been long and has taken a long time for the total treatment. In addition, if the conventional method using benzyl alcohol is not washed enough, staining of the stained paper, taring of the dye, as well as strength decreases, entanglement of the forge in the dyeing machine due to the foam is used, such as using a defoaming agent In contrast, the separation by phenol not only completely improves the problem of fibrillation by benzyl alcohol, but also in the case of breathable waterproofing by high density fabric, in the fibrillation process of the multi-segment of the present invention. Since the water pressure, water repellent drawing can achieve the desired processing effect.

Example 1

Using polyamide / polyester-based split composite fibers, weaved fabrics were 126 × 95 bone / inch high density fabrics with inclined 75d / 36 and weft 120d / 36.

Phenol 0.5-0.8% (ows), sodium hydroxide (98%) 0.001-0.1% (ows), zwitterionic quaternary ammonium salt 0.007% (ows), non-ionic surfactant 0.01-0.02% Add (ows), raise the temperature to 80 ° C, and rotate for 60 minutes. At this time, it can be used for any expectation such as liquid dyeing machine, rapid dyeing machine, winch, rotary whistle, but rotary whistle was used in consideration of process efficiency.

Example 2

Under the same conditions as in Example 1, 0.02% of a surfactant penetrating agent having a strong penetrating power was added and treated under the same conditions.

Example 3

1% of pentaerythritol was added under the same conditions as in Example 1, and treated under the same conditions.

[Comparative Example]

The fabric of Example 1 was placed in a rotary whisker in which 10 g / l of benzyl alcohol, 4 g / l of NaOH (98%), and 10 g / l of a surfactant were mixed, and then heated to 60 ° C., and then rotated for 100 minutes.

The results of Examples 1-3 and Comparative Examples are shown in Table 1.

TABLE 1

* However, the split ratio is regarded as complete division if two or more pieces are not attached in the fibrillation process of multi-segment, and the tearing strength is based on KSK 0535.

Claims (2)

A fibrillation method of a split composite fiber in which a polyamide / polyester split composite fiber is treated in an alkali-containing phenol emulsion solution at 60 ° C.-90 ° C. for 30 minutes to 60 minutes. The fibril method according to claim 1, wherein the phenol emulsified solution is treated by adding a quaternary quaternary ammonium salt.