KR19980016798A - Emulsion composition of synthetic fibers - Google Patents

Abstract

The present invention relates to an emulsion composition of synthetic fiber that can reduce the contamination of the heater, generate less wool and cut, and have a uniform crimping property, thereby obtaining a processed yarn without scissors, as well as improving the processing speed by 20% or more.

The emulsion composition of the synthetic fiber according to the present invention is a block copolymerization and random copolymer of ethylene oxide (EO) and propylene oxide (PO), and has a molar ratio of 50/50 to 90/10 and a carbon number of 1 to 18 at the terminal. 50-70% by weight of two or more kinds of compounds having an molecular weight of 500 to 3000 in which an alkyl group is an ether bond; Random copolymers of EO and PO were added to the polyhydric alcohols, and the compound 10 to molecular weight 3000 to 5000 having a PO / EO molar ratio of 50/50 to 90/10 and an alkyl group having 1 to 18 carbon atoms ether bonded to all of the terminal groups. 30 wt%; 10 to 20% by weight of a compound having a molecular weight of 1000 to 2000 having a molar ratio of 60/40 to 90/10 and having no terminal blockage by adding a random copolymer of EO and PO to the polyhydric alcohol; PO / EO is mixed with the branched fatty acid ester at 10 to 25% by weight of a compound having a molecular weight of 500 to 1500 with a molar ratio of 50/50 to 10/90.

Description

Emulsion composition of synthetic fibers

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an emulsion composition of synthetic fibers, and more particularly, to high-speed processing of a polyethylene terephthalate (PET) unstretched multifilament having a birefringence (Δn) of 0,02 to 0.08 at a speed of several hundred to 1000 m / min. The present invention relates to an oil composition for high-speed stretch friction flaming of polyester fibers, which has little heater contamination and is capable of obtaining uniform crimping.

There are two methods for producing a polyester fiber processed yarn: a method of spinning raw materials, stretching and burning of unstretched yarn, and a method of simultaneously or continuously stretching and burning from a spinning yarn, and the latter method is widely used. have. At this time, the spindle twisting method and the frictional twisting method are used as the stretching twisting method, and the machining speed has been greatly developed to a level of 400 to 1000 m / min.

However, while the processing speed is increased, the amount of wool and cutting is increased due to the damage of the fiber due to the increased friction between the sand, the guide of the processing apparatus, the roller, the heater, and the contact member. The contamination of the heater caused by, and in the extreme case, tar was generated, and the occurrence of cutting and cutting of the processed yarn was further increased.

In the end, they cause crimping abnormalities and dyed spots, which lowers the upper end of the knit fabric and the quality of the textile fabric.

On the other hand, in order to solve this problem, it is necessary to stop production and clean the heater surface frequently, but this method has a great effect on the operability.

Recently, with the examination of heat-resistant emulsions, emulsions mainly composed of polyester compounds have been proposed. High-speed friction flaming of polyester multifilament yarns imparted with such a polyester-based mixture reduces heater contamination, but increases the frictional properties between the four metals of the polyester-based composition, resulting in excessive tension depending on the site. In addition, there is a lot of tension and cutting caused by the severe variation in the tension of each part, which causes the occurrence of crimping abnormality and dyed spots, and eventually acts as a factor that degrades the fabric quality.

The present invention is to solve this problem, the object is that the less contamination of the heater and the less occurrence of cutting and cutting, the crimping property is uniform, not only can be obtained without the cutting step, but also the processing speed can be improved by more than 20% An emulsion composition of synthetic fiber is provided.

The emulsion composition of the synthetic fiber for achieving the object of the present invention is a block and random copolymer of the following three components, ethylene oxide (EO) and propylene oxide (PO) is PO / EO (molar ratio) 50/50 ~ 50 ~ Molecular weight 1000-5000 obtained by adding the random copolymer of EO and PO to 90/10 and the molecular weight which has a C1-C18 alkyl group ether bond in the terminal group 50-70 weight% of the 1st compound of 3000-5000, and polyhydric alcohol. 20 to 50% by weight of the second compound, 10 to 25% by weight of the third compound having a molecular weight of 500 to 1500 added EO and PO to PO / EO (molar ratio) 50/50 to 10/90 to the branched fatty acid ester It has its characteristics.

Hereinafter, each component of the emulsion composition for synthetic fibers according to the present invention will be described in more detail.

The first compound is to improve the smoothness of yarn in order to reduce the occurrence of wool and cutting in high-speed frictional combustion, and eventually to the processed yarn that can improve the upper end of the knitting and the quality of the fabric forge by reducing the crimping To get it. In addition, using this compound, heater contamination can be reduced by using PO / EO (molar ratio) of 50/50 to 90/10.

If the molecular weight of the first compound is less than 500, the large metal friction is good for fluid lubrication, but the thermal stability is poor, and the rubber swelling property is not deteriorated. In addition, the first compound may be used in the form of a block and a random copolymer, respectively. However, when the terminal is blocked at the one end or the unblocked one is used, the friction is high. It is preferable to use that the alkyl group of 1-18 is ether bond.

The most preferable use form is to mix | blend two or more types of compounds of the molecular weight 500-3000, and use them.

The second compound serves to reduce the occurrence of moor during high-speed friction combustion by strengthening the oil film to protect the sand surface.

The second compound has a molecular weight of 3,000 to 5000 in which PO / EO (molar ratio) is 50/50 to 90/10, and an alkyl group having 1 to 18 carbon atoms is ether-bonded at all terminals, and the PO / EO (molar ratio) is 60/40. It is most preferable to use the thing of the ratio of 30-75 weight%: 25-70 weight% which is -90/10 and the molecular weight 1000-2000 which does not block at the terminal.

The former blocks all of the terminals by ether linkages of alkyl groups, thereby improving the smoothness of the yarns, which has a remarkable effect on the prevention of moor during high-speed friction burning. The reason why the PO / EO (molar ratio) is 50/50 to 90/10 is to reduce the contamination of the heater, and a lot of wool occurs at a molecular weight of less than 3000. It is good. It is also good for heater contamination, and since it is lacking in smoothness if it is a block copolymer, it was used in the form of random copolymer.

The latter did not block the ends to further enhance the anti-morning effect of the former. In addition, when the molecular weight is 2000 or more, the fiber-fiber static friction is reduced when winding up the polyester unstretched filament yarn, which leads to poor winding form and causes cutting at high speed friction burning.

The third compound is used to increase the smoothness because there is a limit to increase the frictional burning rate only with the first and second compounds. When the third compound is used, the frictional compounding speed is improved by 20% or more than the conventional frictional burning oil. The reason why the PO / EO (molar ratio) is 50/50 to 10/90 is to compensate for the characteristics of the ester having good smoothness but poor thermal stability.

In addition, in the emulsion composition of the present invention, anionic surfactants such as alkylphosphate salts and alkylsulfonate salts, which are generally known, may be used in combination of several%.

When the emulsion composition of the present invention composed of the above components is given about 0.3 to 0.5% to unstretched yarn during high-speed friction burn, there is less occurrence of wool and cut and less crimping abnormality, resulting in the upper end of the knit or the quality of fabric cloth. No uniformly processed sand can be obtained.

Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples.

[Examples and Comparative Examples]

PET was spun at a rate of 3500 m / min to give emulsion compositions A to G, as shown in Table 1 below, to the multifilaments, respectively, with an aim of 0.4% emulsion deposition. The unstretched yarn of the obtained 120d / 36f filament was frictionally burned while stretching at a draw ratio of 1.5 times, a heater temperature of 220 ° C., and a processing speed of 850 m / min using a friction combustor equipped with a urethane disc. In this way, each 30 days of continuous operation, the draw flammability (morning, cutting, heater contamination, crimp abnormality, etc.) and the obtained yarn was dyed with a knitted fabric to investigate the occurrence of gastric shear, the results are shown in Table 2.

compound Molecular Weight PO / EO Copolymerization Terminal group Terminal bond Example Comparative example R1 R2 R3 A B C D E F G (One) 6008001000150020002500 60/40 Random Random Block Random Block C4C4C4C4C4C8 C1C1C4C1C4C8 Di-ether 1025155 15201010 1525105 2020 (2) 300035004000 70/30 Random Random C4C1C8 C4C1C8 C4C1C8 Tri-ether 15 20 15 10 (3) 100015002000 50/50 Triol 12 10 10 10 (4) 800 15 12 17 (5) 600100015002000300040005000 60/4070/3075/2590/10 Random Block Block Block Random Random Dior Diol Mono Diol Mono Mono 2030102710 303020107 1020272010 20 Anionic surfactant 3 3 3 3 3 3 3 Isooctyl Stearate Isooctyl Palmitate 10 17

Measurement item Example Comparative example A B C D E F G Machinability Number of cows (dogs / ㎏) 0.2 0.1 0.1 1.2 0.8 0.5 0.5 Cut off water (dog / 100㎏) 0.3 0.4 0.4 10.2 5.8 3.2 2.8 Heater pollution degree Micro Micro Micro Micro small small Medium to large Crimp ○ ○ ○ × ○ △ △ Knitting ○ ○ ○ × △ × △

* In Table 2, the heater pollution degree is visually confirmed the tar generation state of the heater after 30 days continuous combustion.

As can be seen from Table 1 and Table 2, the oil D used in the prior art is a compounding oil of a polyester compound known in general, there is a limit in increasing the processing speed due to the lack of smoothness due to the increase in the friction of the large metal, As a result, there were many occurrences of shearing and cutting and poor crimping and fabric quality. Emulsion E is a compounding agent of a polyether compound, which is generally known, and contains a polyether having a molecular weight of 600 to 1000, thereby deteriorating heater contamination, increasing the frequency of burning and cutting of combustible yarns, and greatly deteriorating operability while crimping abnormality. And knit stomach occurred. Emulsion F is mainly composed of a known polyether compound, but iso-octylstearate is blended as a base oil, so heater contamination is large. Oil G was mainly composed of a polyester compound in which the sock end was blocked with polyether, but isooctyl palmitate was blended as a base oil.

On the contrary, the emulsions A, B, and C according to the present invention have a low amount of bite and cut off of the combustible yarns even though the processing speed is higher by 20% or more than the conventional ones, and there is no heater contamination, as well as less occurrence of crimping and knitting. It was.

As described in detail above, the emulsion composition of the synthetic fiber according to the present invention has almost no heater contamination and uniform winding even when the polyester fiber is processed at high speed at a speed of several hundred to 1000 m / min, which is 20% or more improved than the conventional processing speed. It has the effect of obtaining a livestock construction.

Claims (3)

(1) Molecular weight of block and random copolymer of ethylene oxide (EO) and propylene oxide (PO) with PO / EO (molar ratio) of 50/50 to 90/10 and an alkyl group ether bond having 1 to 18 carbon atoms in the terminal group 50-70 weight% of the mixture which mix | blended two or more types of this 3000-5000 1st compound; (2) 20 to 50% by weight of the second compound having a molecular weight of 1000 to 5000 by adding a random copolymer of EO and PO to the polyhydric alcohol; (3) The emulsion composition of the synthetic fiber which was mix | blended with 10-25 weight% of the 3rd compound of the molecular weight 500-1500 which added EO and PO to PO / EO (molar ratio) 50 / 50-10 / 90 to branched fatty acid ester. 2. The second compound according to claim 1, wherein the second compound has a molecular weight of 3000 to 5000 in which PO / EO (molar ratio) is 50/50 to 90/10, and an alkyl group having 1 to 18 carbon atoms is ether-bonded at all of the terminals; Molar ratio) is 60/40 to 90/10 and the end of the molecular weight of 1000 to 2000 of the molecular weight is not contained in the emulsion composition of synthetic fibers, characterized in that used in a ratio of 30 to 75% by weight: 25 to 70% by weight. The emulsion composition of synthetic fibers according to claim 1, further comprising at least one of anionic surfactants such as alkyl phosphate salts and alkyl sulfonate salts.