RU2746324C1 - Composition for processing yarn from polyester fibers - Google Patents

Abstract

FIELD: chemical industry.

SUBSTANCE: invention relates to the chemical industry, in particular to the processing of yarn and fibrous materials from polyester fibers, and can be used in the textile industry. The composition for yarn processing consists of triethanolamine in an amount of 66.6-80 wt%, an antistatic agent, which is polyethylene glycol 200-400 in an amount of 17-30.9 wt%, and caproic acid in an amount of 2.5-3, 0 wt%.

EFFECT: increased coefficient of static friction and decreased coefficient of friction of the yarn processed in solution on the metal of machine parts.

1 cl, 1 tbl, 3 ex

Description

The invention relates to the chemical industry of fibrous materials, in particular to the processing of yarn from polyester fibers and can be used in enterprises processing polyester fibers.

Known composition for processing yarn from polyester fibers, which increases the coefficient of adhesion of the fibers (coefficient of static friction):

Stearox - 6 0.5-0.15%

Water 99.5-98.5%

[Textile auxiliary substances. Catalog / E.N. Anischuk [and others]; Cherkasy: NIOPiK, NIITEKHIM, 1980, - 168 p .; E.F. Felinkovskaya, Z.G. Serebryakova. Textile auxiliary substances in the production of chemical fibers. M .: Chemistry, 1970, - 208 p.].

The disadvantage of the analogue is that it is necessary to strictly maintain the concentration of the Stearox-6 working solution, the excess content of the drug makes the polyester fibers too smooth, as a result of which the adhesion coefficient of the fibers sharply decreases and the yarn breakage reaches 0.15-0.25 breaks / m.

Closest to the claimed invention in terms of the technical essence and the achieved result, that is, the prototype, is a composition for processing polyester textile fibers and yarn [US Pat. 2222653 Russian Federation, IPC ⁷ D06M 13/02, 13/184. Composition for processing textile fibers and yarn / Melnikov V.G., Stepanova T.Yu., Orlov E.V., Komarova T.G .; applicant and patentee Ivanov. state chem.-technol. un-t. - N 2002113941; declared May 28, 2002; publ. 27.01.2004, Bul. No. 3. - 7 p .: ill.]. The prototype contains the following components, wt%:

Polyethylene glycol - 400 55-60

Monoalkyl ethers

primary fatty acids 25-30

Triethanolamine 3-7

Acetic acid (25% solution) 7-13

The disadvantages of the prototype are that the processed polyester fibers have a low coefficient of adhesion of the fibers in the yarn (coefficient of static friction) -17 and a high coefficient of sliding friction of the yarn on the metal - 0.29, in addition, the composition dissolves only in hot water, which increases energy consumption when processing of polyester yarn.

The technical result of the invention is to increase the coefficient of adhesion of the fibers (coefficient of static friction) and reduce the coefficient of friction of the yarn on the metal of machine parts (coefficient of sliding friction).

This result is achieved in that the composition for processing yarn from polyester fibers, including polyethylene glycol of molecular weight 200 ÷ 400, triethanolamine, according to the invention, additionally contains caproic acid, in the following ratio of components, wt.%

Polyethylene glycol 200 ÷ 400 17-30.9

Triethanolamine 66.6-80

Caproic acid 2.5-3.0.

The use of the claimed set of essential features will make it possible to obtain the achieved technical result, namely: to increase the coefficient of adhesion of the processed polyester fibers in the yarn (coefficient of static friction) by 1.2-1.3 times by increasing the interfiber friction and reducing the coefficient of friction of the yarn on the metal of machine parts in the process of processing (sliding friction coefficient) by 1.2-1.4 times due to the formation of a boundary film of the lubricating solution on the surface of the fibers.

To prepare the composition according to the proposed method, the following components are used:

Polyethylene glycol with a molecular weight of 200 ÷ 400 (PEG-200 ÷ 400) is produced according to TU 2483-167-05757587-2000 ["Harmful substances in industry" Part 1. Ed. 6th, rev. L .: Publishing house "Chemistry", 1971, p. 832. Tab. 57]. It is used in the textile industry as an emulsifier, dispersant and antistatic agent.

Triethanolamine (N (CH ₂ CH ₂ OH) ₃ ) corresponds to TU 2423-168-00203335-2007. It is part of softeners for rubber, coolants, perfumes, and is used as a corrosion inhibitor.

Caproic acid (C ₅ H ₁₁ COOH) is produced according to TU 6-09-126-75, is used to obtain hexylresorcinol, and its derivatives are used to obtain polyamide synthetic fibers.

The proposed composition for processing yarn from polyester fibers is prepared using the following technology.

Example 1. 30.9 g (30.9 wt.%) Polyethylene glycol with a molecular weight of 200, 66.6 g (66.6 wt.%) Triethanolamine and 2.5 g (2.5 wt.%) Caproic acid are placed in glass dish and thoroughly mixed with the mixture at a temperature of 20-25 ^{° C} for 40 min. The composition for processing polyester fibers is obtained in the form of a thick, colorless transparent liquid, readily soluble in water.

Example 2. 17.0 g (17.0 wt.%) Of polyethylene glycol with a molecular weight of 400, 80.0 g (80.0 wt.%) Of triethanolamine and 3.0 g (3.0 wt.%) Of caproic acid are placed in glass dish and thoroughly mixed with the mixture at a temperature of 20-25 ^{° C} for 40 min, after which the composition for the treatment of the polyester fiber yarn is ready for use.

Example 3. 8.7 g (8.7.0 g) of polyethylene glycol with a molecular weight of 300, 93.3 g (93.3 wt.%) Of triethanolamine and 3.5 g (3.5 wt.%) Of caproic acid are placed in glass dish and thoroughly mixed with the mixture at a temperature of 20-25 ^{° C} for 40 min. The resulting composition is ready for use as a composition for processing yarns from polyester fibers.

The resulting compositions for processing yarn from polyester fibers are stable for 60 days (do not change properties), the content of the active substance is 95%.

When using the obtained compositions, the technology for preparing solutions for yarn processing is simplified, since the composition dissolves in water at a temperature of 20-25 ^o C, which allows to reduce energy consumption.

For processing yarn made of polyester fibers (the process of preparing warp for weaving), 1-2% aqueous solutions of the composition according to examples 1-3 are used.

Polyester fiber yarn processing solutions are prepared in the following manner:

1 g (1 wt.%) Of the composition for processing yarn, obtained according to example 1, is placed in a glass dish, add 99 g (99 wt.%) Water and stirred until complete dissolution. In the same way, 1% solutions are obtained from the compositions for processing yarns from polyester fibers according to examples 2 and 3.

2 g (2 wt.%) Of the composition for processing yarn from polyester fiber according to examples 1-3 with 98 g (98 wt.%) Of water, with stirring until complete dissolution, give 2% solutions with which the yarn is treated. These solutions have a pH of 6.7-7.1; kinematic viscosity at 20 ^о С - 1.25-1,132 cSt, surface tension 40-42 mN / m, stability of solutions - not less than 24 hours.

Filaments (yarns) made of polyester fibers are treated with solutions of the claimed compositions in a contact method on a LMS belt-warping machine, in which the filaments pass along a shaft rotating in a bath with a solution. The composition is transferred from the shaft to the threads.

Yarn made of polyester fibers, treated with solutions of the claimed composition, was tested in the following installations: the coefficient of static friction (coefficient of adhesion of the fibers) was determined on a tensile testing machine RM-3, the coefficient of sliding friction of the yarn on metal was determined on a device TKI-26-1 (Metrempex ). Yarn breakage was determined visually on looms STB-2-175, STB-4-180.

The test results are shown in the table.

Table

No.
examples Fiber adhesion coefficient (static friction coefficient) Coefficient of sliding friction of yarn on metal one 2 3 1% solution of the composition according to examples:
one
2
3 20.6
20.8
21.2 0.238
0.228
0.231 Prototype 1% solution 17.0 0.290 2% solution of the composition according to examples:
one
2
3 21.0
20.9
21.1 0.233
0.224
0.226 Prototype 2% solution 17.2 0.285

The table shows that after processing the yarn in solutions, the adhesion coefficient of polyester fibers increased compared to the prototype by 1.2-1.23 times, the sliding friction coefficient of the yarn on the metal decreased by 1.2-1.3 times.

Additional advantages of the invention are:

- reduction of yarn breakage on machines STB-2-175, STB-4-180 decreased to 0.03 breaks / m (on average), with a rate of no more than 0.35 breaks / m;

- improvement of yarn quality indicators: breaking load, elongation, elasticity;

- reduction in the number of yarn defects arising from friction against the thread-conducting metal parts of the machine: pushing, bridging, etc .;

- increase in yarn moisture up to 0.9%;

- reduction of yarn electrification by 2-3 orders of magnitude.

Claims (2)

Composition for processing yarn from polyester fibers, consisting of triethanolamine and an antistatic agent, characterized in that polyethylene glycol 200-400 is used as an antistatic agent, and also additionally contains nylon acid in the following ratio of components, wt%: Polyethylene glycol 200-400 17-30.9 Triethanolamine 66.6-80 Caproic acid 2.5-3.0.