Oil solution for spandex spinning by dry method, and preparation and use thereof

A spandex spinning and oiling technology, which is applied in textiles and papermaking, fiber treatment, fiber types, etc., can solve the problems of large differences in unwinding force of silk cakes, blockage of oiling agent pipelines, and large unwinding tension of silk, etc., to achieve unwinding Uniform winding tension, avoiding adhesion, and not easy to fall off

Inactive Publication Date: 2009-05-27
NINGBO ECONOMIC & TECHN DEV ZONE SICO NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the main oil components shown in the special publication No. 44-8907 bulletin developed by Nissin Textile Co., Ltd. are mineral oil and fatty acid esters. The result of its application is poor spinnability, and the unwinding tension of the silk is large and uneven; Silicone oil and modified silicone oil are gradually added to the oil agent as anti-adhesion components, as shown in Toyobo Co., Ltd.’s special publication No. 57-128276. Its main components are mineral oil, silicone oil, polyether modified silicone oil, and fatty acid esters. Although the quality of this type of oil has been greatly improved, due to the low surface tension of silicone oil, there are still defects such as easy slipping of the silk and large differences in unwinding force inside and outside the silk cake; there are also patents (Special Publication 41-286, Special Publication 40-5557, publication number CN 1696395A etc.) report, add the metal salt of higher fatty acid in oil agent, as magnesium stearate solid powder, as the antisticking component of spandex yarn, but there is magnesium stearate in practical application Settling of solids and blockage of oil pipelines

Method used

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  • Oil solution for spandex spinning by dry method, and preparation and use thereof
  • Oil solution for spandex spinning by dry method, and preparation and use thereof
  • Oil solution for spandex spinning by dry method, and preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a 500ml three-port glass reactor, add 32.4g hexamethyldisiloxane, 29.6g dimethyldiethoxysilane, 35.6g methyltriethoxysilane, 250g ethyl orthosilicate in sequence, stir and mix Evenly, at 25°C, start to add acidic water consisting of 50g of water and 10g of 30% hydrochloric acid dropwise, and finish adding within 1 hour. The temperature of the reaction solution rises to 70°C, and the color of the reaction solution gradually turns from colorless and transparent to milky white. After maintaining the reaction at a temperature of 60° C. to 70° C. for 1 hour, the stirring was stopped, and the reaction liquid was separated into two layers. The lower resin was separated, and the resin was washed with pure water until the pH was neutral. Refill the water-containing resin into the glass reactor, heat up and dehydrate under vacuum conditions, the dehydration temperature is 100°C-130°C, and the time is 2-3 hours, until the resin is colorless and transparent and reaches the requi...

Embodiment 2

[0041]In a 500ml three-port glass reactor, add 48.6g of hexamethyldisiloxane, 48g of dimethyldimethoxysilane, 54.4g of methyltrimethoxysilane, and 125g of ethyl orthosilicate in sequence, and stir and mix evenly. At 25°C, the acidic water consisting of 45g of water and 9g of 30% hydrochloric acid was added dropwise, and the addition was completed within 1 hour. The temperature of the reaction solution rose to 65°C, and the color of the reaction solution gradually changed from colorless and transparent to milky white. After maintaining the reaction at a temperature of 60° C. to 70° C. for 1 hour, the stirring was stopped, and the reaction liquid was separated into two layers. The lower resin was separated, and the resin was washed with pure water until the pH was neutral. Refill the water-containing resin into the glass reactor, heat up and dehydrate under vacuum conditions, the dehydration temperature is 100°C-130°C, and the time is 2-3 hours, until the resin is colorless and ...

Embodiment 3

[0046] The composition and the percentage composition of each component of dry-process spandex spinning oil agent in the present embodiment:

[0047] Silicone resin (structural formula 2) 10%

[0048] Methicone 40%

[0049] Polyether modified silicone oil 5%

[0050] Mineral Oil 43%

[0051] Antistatic agent 2%

[0052] Put the above components into the stirring tank one by one, and mix well and evenly at 20-40°C to obtain the colorless and transparent oil agent for dry-process spandex spinning of the present invention.

[0053] The main performance of the oil agent:

[0054] Appearance: colorless and transparent.

[0055] Viscosity: 10mPa.s.

[0056] PH value: 6~7

[0057] Volatile matter: 0.5% (100°C, 1hr)

[0058] The application result of oil agent in semi-continuous polymerization, dry spinning process is shown in table 1 below:

[0059] Table 1

[0060]

[0061] In this embodiment, adding 10% of the silicone resin compound represented by molecular formula (2...

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Abstract

The invention relates to a preparation agent for dry method urethane elastic fiber spinning. The preparation agent comprises the following components: silicone resin, methyl silicone oil, modification silicone oil, mineral oil and antistatic agent. The preparation method comprises the following steps: 1, silicane chain links(M, X, Y and Z) are mixed and evenly stirred, started, added with acid water at a temperature of 25 DEG C and reacted for 1 hour at the temperature of between 60 and 70 DEG C, stirring stops, after layering, the resin on the lower layer is separated out, the pH value of the resin is neutral by washing, and the resin is subjected to vacuum pumping, temperature rise and dewatering to prepare the silicone resin; and 2, the silicone resin, the methyl silicone oil, the polyether modification silicone oil, the mineral oil and the antistatic agent are placed in a stirring kettle, and evenly mixed at the temperature of between 10 and 50 DEG to obtain. The application of the preparation agent is as follows: the preparation agent is put in a storage tank and transferred to an oil nozzle or roller by an oil pump, and the urethane elastic fiber is directly contacted and oiled. The preparation agent for dry method urethane elastic fiber spinning is transparent liquid, does not contain solid particle components such as hard ester acid magnesium and the like, does not plug pipes and equipment in the oiling process, and does not need power-off cleaning, thereby improving production efficiency.

Description

technical field [0001] The invention belongs to the field of preparation of oil for fiber, in particular relates to an oil for dry-process spandex spinning and its preparation method and application. Background technique [0002] Due to its excellent elasticity and good comprehensive properties, the production and application of polyurethane elastic fiber, ie spandex, has developed rapidly in the past few years. In 2007, the national spandex output exceeded 200,000 tons. [0003] Polyurethane elastic fiber, due to the existence of urethane polar groups in its fiber molecular structure, not only endows the fiber with elastic properties, but also makes the spandex filaments prone to adhesion. If there is no good and suitable oil for spandex spinning, It will bring serious problems to the spandex spinning process and subsequent processing and application. Spandex spinning processes mainly include dry spinning, melt spinning and wet spinning, among which dry spinning accounts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643D06M13/02D06M13/292D06M101/38
Inventor 茅开表胡生斌
Owner NINGBO ECONOMIC & TECHN DEV ZONE SICO NEW MATERIAL
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