JPS63105177A - Method for processing silk fiber fabric - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a method for imparting practical performance such as wrinkle resistance and shrink resistance to silk fiber fabrics with excellent reaction efficiency.
This invention relates to a method for processing silk fiber fabric.

<Conventional techniques and their problems> Many methods have been proposed to impart practical performance such as wrinkle resistance and shrink resistance to a single fiber fabric, and these proposals can be categorized as follows: be done.

■ So-called resin processing method using urea, formalin, melamine resin, etc.

According to this study, the shrink-proofing property and wrinkle recovery during drying are improved to some extent, but the wrinkle recovery when humidity is added is not improved, and the texture of silk fiber fabric after treatment is not improved. It had the disadvantage of making it hard.

■ In the case of processing with silicone resin, it is possible to improve wrinkle recovery during drying without making the texture hard, but it creates the slippery texture characteristic of silicone, which is a desirable characteristic of #I fiber fabrics. There was a drawback that the fabric was completely lost and sewing was difficult.

■ In order to eliminate the drawbacks of the above-mentioned technologies, a treatment method using epoxy monomers using neutral 1N as a catalyst was proposed, such as in Japanese Patent Publication No. 52-38131, but this method did not overcome the above-mentioned drawbacks to some extent. Although it is possible, in order to cause the epoxy monomer to chemically react with the silk fiber fabric, it is necessary to heat it for a long time in an organic solvent, which makes it difficult to put this method into practical use.

■ In order to solve the problem of heat treatment over long I]ν in organic catalysts, a method of using microwaves for heating has been proposed in JP-A-60-252771 or JP-A-61-6.
82 etc.

In JP-A No. 60-252771, the aqueous catalyst solution is
After impregnating one strand of A fabric, an epoxy monomer bath is applied to it without drying it, and then it is irradiated with microwaves.

In JP-A-61-682, a catalyst and an epoxy monomer in the same bath are applied to a set of fiber fabrics, and then microwaves are irradiated thereon.

In all of these methods, it was possible to shorten the heat treatment time, but the epoxy monomer bath changes significantly over time and its stability is poor, making it extremely uneconomical. Because of its poor permeability, reactions tended to occur on the surface of silk fibers, and sufficient processing effects could not be obtained.

In view of the shortcomings of the conventional methods, an object of the present invention is to provide a method for imparting various desired practical properties to textile fabrics with excellent reaction efficiency. It is something to do.

Means for Solving the Problems> In the present invention, a silk fiber fabric is filled with an epoxy crosslinking agent having two or more epoxy groups and dried, and then an aqueous solution of a crosslinking reaction catalyst is applied to the microstructure. A method of heating by irradiating waves has been completed.

Epoxy crosslinking agents to be used in the present invention are effective aliphatic ones with relatively small molecular weights, such as ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, glycerin diglycidyl ether, and glycerin triglycidyl ether. , etc. can be mentioned.

A silk fiber fabric is immersed in a bath in which these are dissolved in water or a low-temperature wood-loving organic solvent of 100'C or less, such as lower alcohols, ethyl acetate, acetone, methyl ethyl ketone, etc., and then squeezed using a roll mangle. After liquid or centrifugal deliquification, drying is performed at a temperature of 1 oo'c or less to achieve addition of 5% or more of the epoxy crosslinking agent to the silk fiber fabric.

Next, in the step of applying the cross-linking reaction catalyst aqueous solution at i=1, squeezing with a roll mangle or spraying is used, but in order to obtain high reaction efficiency and uniformity of processing, a wet pig aperture of 30 to It is important that it be within the range of 150%, more preferably within the range of 50 to 100%.

As the crosslinking reaction catalyst, neutral 1n, weakly alkaline group 1 strongly alkaline substances, etc. are well known, but in the present invention, a particularly useful weakly alkaline salt is selected from L in terms of reaction efficiency and processing effect. They are, for example, sodium carbonate,
Potassium carbonate, sodium bicarbonate, potassium iRate,
Sodium acetate, fA=potassium acid, sodium silicate, sodium phosphate, etc.

The aqueous solution concentration of these catalysts has a profound effect on the processing effect, and it is necessary to change it depending on the required practical performance and the form of the silk fiber to be processed. The range is preferably 20%. If the concentration is higher than this, the M1 fibers will turn yellow, causing a disadvantage, and if the concentration is lower than this, the reaction efficiency will decrease and it will not be practical.

The silk fiber fabric coated with an epoxy crosslinking agent and a crosslinking reaction catalyst is then sent to a heating process.

Although a normal steam heating mechanism may be used as a means for heating, heating by microwaves is effective since it has a rapid heating rate (11) and is easy to control the temperature.

When heating with microwaves, the heating rate and maximum temperature vary depending on the frequency, the type and amount of the diluent, the moving speed of the material to be treated, etc., but these requirements must be met. By making adjustments, you can ensure the optimum heating rate and maximum temperature for your work.

The conditions for heating are as follows: M1 fibers are sensitive to high temperatures, so it is necessary to keep the heating temperature below 125°C.
It is necessary to complete the crosslinking reaction before the product is completely removed.

From these viewpoints, a heating temperature of around 100°C is most effective.

Next, specific implementation of the present invention will be explained by giving an example.

<Example 1> Glycerin diglycidyl ether 1 per liter
A 10 momme M1 habutae was immersed in a methanol solution containing 00 g for 5 minutes at room temperature, and the liquid was squeezed using a mangle to obtain a 100% pick-up.

After drying this object to be treated at 70°C, it is passed through an 8% aqueous sodium acetate solution and squeezed to 85%.

This was heated in a microwave at 400 W for 1 minute.

After heating, it was washed with Marcel soap solution at 80°C, washed with water, and then dried.

With this treatment, a weight increase rate of 9.2% was obtained, and a significant improvement in shrink-proof and wrinkle-proof properties was observed. A table comparing the results with untreated Kumihabutae is shown in Table 1.

Table 1. Silk habutae shrinkage test! ! 7i! : JISL1042-B method Wrinkle recovery test: Sensant method <Example 2> An 8 momme set of crepe was immersed at room temperature for 5 minutes in an impropatul solution containing 120 g of ethylene glycol diglycidyl ether per liter, and wet. Squeeze the pickup to 100%.

After drying the object to be treated at 75° C., a 12% aqueous sodium carbonate solution was sprayed with a spray gun to obtain Wet Picker Pro 0%.

This is heated in a microwave at 400 W for 1 minute.

After heating, it was washed, washed with water, and finally dried in the same manner as in Example 1.

According to this example, as shown in the test results in Table 2, it is clear that in addition to the improvement in wrinkle resistance, the shrink resistance, which had been an unsolved problem with crepe, was significantly improved.

Table 2 Silk crepe shrinkage test: JISL1042-B method wrinkle recovery test:
Sensanto method (Example 3) 1 liter methanol/water (50:50) containing 100 g of ethylene glycol diglycidyl ether
Soak a 16 monme silk Hajiton in the solution for 7 minutes at room temperature, and squeeze the solution into 70% wet pick amplifier using a mangle.

After drying this material to be treated at 75°C, 10% carbonate solution was added.
- Pass it through a lium aqueous solution and squeeze out 85% of the liquid.

This is heated in a microwave at 600W for 1 minute.

After heating, it was washed, washed with water, and dried in the same manner as in Example 1.

As a result of the treatment according to this example, the weight increase rate was 8.8%, the Monsanto wrinkle recovery rate was 79.2% compared to 59.6% without dry treatment, and 82% compared to 61.2% without wet treatment. .5%, Teari, AATC
C. Wash and wear properties (line dry) were rated 4th grade, whereas the untreated sample was rated 1st grade.

Effects of the present invention> As described above, the present invention has the effect of being able to achieve various practical effects with high reaction efficiency, which could not be achieved by conventional methods. By separately applying a cross-linking reaction catalyst to the object to be treated, it is possible to ensure the stability of the bath agent and ensure its permeability into the interior of the fibers, making microwave heating more effective. (There is an effect that can be done.

Special 51 applicant Man'ei Textile Co., Ltd. Sawamura Chemical Machinery Industry Co., Ltd. generation) llj people ＋＋｀　　　kawa　　Makoto　shi

Claims (1)

[Claims] Silk fiber fabric is impregnated with a treatment solution of an epoxy crosslinking agent having two or more epoxy groups, dried, and then an aqueous solution of a crosslinking reaction catalyst is applied at a wet pickup rate of 50 to 150%, A method for processing silk fiber fabric, characterized by irradiating the fabric with microwaves without drying the fabric.