JPS584816A - Polyester fiber with treated surface and its preparation - Google Patents

Abstract

PURPOSE:The titled fibers, having annular grooves in a specific number per fibrous length in the circumferential direction, and feeling resembling that of the natural fibers, e.g. wool or cotton, and moisture retaining property, brightness after the dyeing, and usable as pilling-resistant materials, etc. CONSTITUTION:Undrawn polyester fibers are drawn in the presence of heated steam, and treated with an amine comound and then an alkali to give the aimed fibers having 1-20 annular grooves per 5mu fibrous length in the circumferential direction on the surface thereof. Preferably, the depth of the annular grooves is 0.2mu or more, and microvoids of such a size as to be confirmable by the X-ray diffraction are present in the interior of the fibers. The drawing is preferably carried out in many stages.

Description

[Detailed description of the invention]

This invention relates to a processed fiber with a polyester surface having an annular surface in the circumferential direction and a method for producing the same. Polyester fiber - Saturated polyester fiber represented by polyethylene terephthalate (polyester fiber 1411) has many excellent properties.
For clothing because it has I properties - Anchor. It is conveniently used for mounting on anchors, etc. However, the polyester Ia #I obtained by the one-current manufacturing method has a circular transverse shape, is uniform in the length direction, and has a smooth surface. 5. General x*m Natural spear mK with uneven shape is inferior in texture #C of 9 etc., * polyester *a has low hygroscopicity but has a sticky feeling despite 4. The shortcomings of Furu. Due to these circumstances, the texture of Goyu Kenten is made to be natural! Various methods have been proposed to approach this, and some of them have been adopted commercially. The simplest method is to make the transverse liI shape of IIIJI into an irregular shape such as a triangle or hexagon, and this method is often adopted. Although this method can improve the alignment to some extent, it cannot be said to be sufficient because the length direction of the Ilm is uniform compared to the natural one.On the other hand, polyester KLT titanium oxide, Add inorganic substances such as carbonate and carbonate and disperse.

[The resulting delicate material is treated with alkali to remove inorganic additives and create many bumps on the surface.] The wire pyramids obtained by this method have simple irregular shapes such as triangular cross-section threads. Am
In comparison, it has unevenness in the twill axis direction, and the texture is even closer to natural bond. It has also been confirmed that the sharpness after dyeing is improved by creating a large number of irregularities on the surface. However, the unevenness of the wire pyramid obtained by this method is almost uniformly distributed in the direction of the complex pyramid axis and in the circumferential direction of the cross section. It is different from the state attached to. Therefore, no matter how you improve your technique, there is a limit to how far you can get the texture to approach that of natural iron. The present inventors have solved such conventional drawbacks. The texture of polyester IIM is made closer to that of natural iron.
By attaching II#I to Ami 7 and Alka 11, a polyester table with a unique surface structure is obtained.
It was discovered that processing 1llII can be obtained 1. FC of the present invention @
Reached. That is, in the present invention, in the circumferential direction of the positive ester
Polyester surface treatment method characterized by having 1 to 20 annular grooves per 5β length of brass and unstretched polyester - The anchor was stretched in the presence of heated steam and then 71 mm This is a method for producing a surface-treated pore-treated ester plate having an annular groove in the circumferential direction on the # layer surface, which is characterized by treating with a compound and then alkali treatment. In the present invention, the acid components constituting the polyester include terephthalic acid, isobutaric acid, naphthalene dicarboxylic acid,
diphenyldicarboxylic acid. Aromatic dicarboxylic acids such as diphenylsulfone dicarboxylic acid, diphenyl/xyethane dicarboxylic acid, phenyl ether dicarboxylic acid, methyl terephthalic acid, methyl isofthalic acid, succinic acid, adipic acid, sepacic acid, decane dicarboxylic acid, dodecane Examples include aliphatic dicarboxylic acids such as dicarboxylic acid, alicyclic dicarboxylic acids such as dicarboxylic acid, oxycarboxylic acids such as C-oxycaproic acid, oxybenzoic acid, hydroxyethoxybenzoic acid, etc. Of these, aromatic dicarboxylic acids are preferred, and terephthalic acid is particularly preferred.
Also. In the above poester, when the acid component is a dicarboxylic acid, the dacol component is
t9 methylene gel call, tetra methylene gel call,
Hexamethylene datocol, Tecamethylene glycol,
Examples thereof include dimethyl, and among these, ethylene dacol and tetramethylene dimethyl are particularly preferred. It is also possible to use substituted oxyfulkylene glycol as part of the dacol component, such as polyoxyethylene dalifur. Examples include polyoxybutylene glycol, polyoxyteramethylene dalycol, and copolymers thereof. When using Pofyo oxyalkylene daligol, its average molecular weight is preferably 500 to 5ooo, more preferably tL
< is 40G~4000. Particularly preferably 800 to 500
0 means island. The amount used is 5 to 5% by weight of B in the copolymerized B1 ester, preferably 10 to 80% by weight, more preferably 15 to 7% by weight.
The amount is about 5% by weight of copolymerization. The copolymerized podiester obtained by copolymerizing this pokidia alkylene gel sofur is preferably a pusitta copolymer. Further, the polyester can be keratopolymerized with another dicarboxylic acid or goucol as the j15 component,
Further, within a substantially thermodustable range (for example, 1 mol % or less based on the total acid components), tri- or more functional compounds such as trimethyl fuhan, pentaerythritol, trimethyl kaetol, pime 9, etc. Toric acid, etc. can also be used for single-blind cod fish production.
iljffHenzoylbenzoic acid, diphenylcarboxylic acid, carbonic acid, etc. may be copolymerized, and the polyester is required! ! Depending on the situation, additives 1 such as colorants, matting agents, stabilizers, JI refueling agents, antistatic agents, embedding agents, etc. may be added. The method of the present invention v4 is a condie gate in which the above-mentioned polyester is composited with another polyester having different physical properties in a core-sheath shape.
It can also be used as a seal to change the surface shape of the polyester part. Polymers with different physical properties referred to here include single-layer positive polymers that have different intrinsic viscosity, and compositions that have changed due to copolymerization, additives, etc. Bosomer is used in combination with energized podiester. The podiester surface-treated wire rod of the present invention is shown in Figures 1 and 2.
As shown in 811, there are many annular w
It has #. It is necessary that the number of annular grooves is 1 to 20 per the length of the spade. As a result, the material becomes brittle and a so-called interstitial layer is formed that deteriorates durability. The depth of the R-shaped groove is α2fi
It is preferable that the polyester l1m of the present invention has an internal KX1
It is desirable to have one-degree minute voids that can be confirmed by one-time diffraction.The presence of such POI V prevents subsequent amine treatment, alkali treatment! Il ensures that a good annular groove is formed. Such a surface-treated polyester can be obtained by stretching an unstretched polyester anchor in the presence of heated steam, first treating it with an amine compound, and then treating it with an alkali IJ6 field. The ultimate viscosity of the polyester in the present invention is preferably 14 or more, preferably α6 or more.On the other hand, if the intrinsic viscosity is α8 or more, the strength of the processed material can be increased. In the FC of the present invention, the above-mentioned polyester is melted and fed to a spinneret. In the case of POI+ethylene terephthalate, the melting temperature used is at280 to 3oC. The molten polymer discharged from the spinneret is cooled,
After the yarn is drawn, it is either collected as an undrawn yarn or continuously supplied to a drawing factory without being taken care of. In the present invention 1j4, stretching step 5 in the presence of heated steam is an important point constituting the present invention. Heated steam drawing involves injecting heated steam onto undrawn yarn, or introducing undrawn yarn into a heated steam atmosphere, raising the yarn temperature at once to above the glass transition point, and then injecting heated steam at the drawing point. The ivy is stretched by fixing it near a point or in a heated steam atmosphere. If the stretching in the presence of heated steam is carried out in two or more stages, moldy voids that can be easily confirmed by folding will occur in 111 JII interior, and the cracks will be removed by alkali-sonic treatment. This is desirable because it produces good annular grooves on the surface of the fibers, and k is the process of elongation (l! When elongation is divided into one or more stages, multi-stage elongation is required). It is desirable that the total stretch ratio (expressed as the product of the stretch ratios) is 85% or more of the maximum stretch ratio. Here, the maximum stretching ratio is the ratio at which yarn breakage occurs frequently and normal stretching cannot be achieved if the KIE drawing is further extended.The specific stretching ratio is determined by the degree of orientation of the undrawn yarn. However, when the spinning speed is 3oo to 1000 mm/min, the 1st stage magnification is 2 to 6 times (preferably 4 to 6 times), the 2nd R drawing ratio is 11 to 5 times (preferably 11 to 3 times), After the S stage, 0.9 to 2 times C, preferably α96 to t
S times) will be adopted. When the spinning speed exceeds 3900 m/min, it is appropriate that the total draw ratio is 4 times or less. If the stretching ratio is too high,
Yarn breakage occurs frequently during stretching. In addition, if the 1M stretching ratio is too low, the strength and elongation properties will decrease, and Ia
Good annular grooves are no longer formed on the back surface of the boat. For example, as a heating and hot steam injection device,
In order to improve the heat efficiency, a steam injection device equipped with a cutter and having a closed structure other than the thread passage section can be used. In addition, the temperature of heating steam is soO~550℃,
The pressure is preferably t5 to 1011/a11g. Following the stretching using heated steam, further heat treatment using a heated roller or the like can be performed as required. In this case, the film has already been subjected to considerable heat treatment during stretching with heated steam, so excessive heat treatment is unnecessary and it is usually sufficient to keep the temperature of the heating roller at 200° C. or lower. The most suitable spinning/Fujin method for obtaining the Pose ester surface treatment*a of this invention is the Fujin method, in which the spun, undrawn system is drawn continuously without first being drawn. After winding up the undrawn yarn, teach cl! I don't mind the method of stretching it. In this project 11, we will use the alkaline furnace obtained by the above method.
After cleansing the water, use caustic soda. Treat with alkaline water such as caustic car.
, it is possible to obtain a surface-treated line with one fishing line. The seed play for Alkyliagin is Meluluan. In addition to alkylagines such as ethyl 7i and poupilane, aromatic amines such as aniline, primary and secondary amines such as aniline can be used, but a particularly preferred 7j compound is methyla ξ n, ethyl 71n, n-propyl 717
．． Impupil Arn isoleg prime number 4 or less Alkylua 1
These 71 compounds are usually used in the form of an aqueous solution. The aqueous solution may be adjusted as appropriate to obtain the desired surface processing condition for the polyester embroidery used. The Aden treatment is usually carried out at a temperature of 10 to 40 DEG C., but it may be possible to deviate from this range.If the temperature is too high, the decomposition rate tends to become too fast, which tends to cause problems in reproducibility. The alkali used in the present invention is hydroxide)
By using hydroxides of alkali metals and alkaline earth metals, such as saturated calci, rum, etc., which have a strong hydrating power, other alkalis such as aqueous solutions can also be applied. be. However, the most preferred are sodium hydroxide, sodium hydroxide, and calcium hydroxide. These fluids contain 1-10% water (11m) to moderate the reaction.
[Preferably used with K, the overcharged alkali bud treatment is 40
It is carried out under heating above ℃, but this is not an essential condition. 19. To make *a 71y4san'. Attempt to add @ convex to ala award・1 For example, 411 meeting 1114
7-1? s1? Although it has been proposed in the issue newsletter, etc., if the anchor is stretched under normal stretching conditions and the anchor is 711JII & Ru, it will be a Yarifu table! ! Even if we meet by forming a convexity, m-
The strength has decreased drastically, and the practical significance has been completely lost (for example, Kobunshi Ronsen 55-9, II?-595 (11@
) and the same magazine d-! ! ,ff14! -24? ('74))
On the other hand, if the maximum extension of 7 Yonoshima Ru is weakened, it will not be possible to create @convexity on the surface, so it will be a conical surface within the practical range! ! It was impossible to have a convex, beautiful and powerful figure. This was the same even when the strength of Iam was greatly increased in advance. In addition, the same magazine also reveals that the attempt to change the texture of l1lIII by applying Aankeiru has 25,567 methods in the dyeing industry that have not been put into practical use. The present inventors have completely overcome these problems by combining the manufacturing conditions of the drawn yarn used as a raw material and the 71 nm and alkali treatments. The number and depth of the annular grooves formed are important factors in improving the texture of polyester iron brass. These can be changed from the main bone-1K of the Shima Nobuhata condition and the amine and alkali ψ conditions. However, both of these requirements can be omitted and the present invention can be used in multiple ways.
It is not possible to obtain llI satin. If only the alkali treatment is performed without the 11-n treatment, it is difficult to obtain the surface structure Ia having the annular grooves of the present invention, and it is difficult to obtain the ms + gain of the present invention with only a full carbon FJIS view. This requires an extremely long processing time, making k to be carried out in Koto fishing inappropriate. On the other hand, the alkali treatment alone is not practical for some reasons, and therefore, in the present invention, it is necessary to carry out step 71 and further perform the alkali treatment. Furthermore, if the material is subjected to a 7J treatment after the alkali treatment, it is not possible to obtain the surface structure having the annular grooves of the present invention. This product has many annular grooves on its surface and has a texture similar to that of a natural mackerel complex instead of wool.
In addition, the surface area of the kiln is relatively thick (because of this, it has good heat retention as a bell weave, and has good beak properties after dyeing.) It was found that it can also be used as a pilling material.Furthermore, the material of the present invention can also be used as a material that has the ability to be used as a single layer, such as yuzu, or as a material that adheres to citrus. The present invention will be further described in detail with reference to the following. Parts in the yen represent weight, and the intrinsic viscosity is the value measured at 55°C using a mixed solvent of 1 part tetratal ethane and 1 part phenol as a solvent. Example 1 After solid-phase polymerization of Poso ethylenetereate chips with an intrinsic viscosity of α71 to an intrinsic viscosity of 11, the extrusion was carried out as a single melt using an etastelue, supplied to a gear pump, passed through a spinning batter, # Spinning from a spinneret.At this time, the batter pressure was 2jSO#/-G, and the temperature of the polymer was 505℃. The discharge rate was 2 (12 m/Hr).The discharged yarn was passed through a normal cooling device to make it unrefined, and then subjected to oil ψnder treatment, and then the first t-supply. - 2nd stage stretching, further 1st stage stretching - 2nd stage stretching - heated steam is injected between the 1st stage stretching cooler and TS 2nd stage stretching A - 2nd stage, heated steam again between the 1st stage stretching cooler and TS 2nd stage stretching A2 After injecting and elongating it to t25 times, it passed through the ms stage's tsuta elongating a-ler and was heated to 2000++ a/-.
The temperature was 50°C and the pressure was 15°/-. The temperature of the 111th stage stretching is room temperature, the temperature of the 2nd stage stretching is 130°C, and the temperature of the stretching roller of the 11th stage is 11
The temperature was 10°C. The resulting drawn yarn has an intrinsic viscosity of 18! White opaque WA”Q
1h91 strength 111 (Ll 51/de, elongation PH19
, 5%. The writing line was L5499. After immersing the thus obtained drawn yarn in a 50% aqueous ethylamine solution at 30°C for 8 hours, 15% Na0II*11
It was washed with water soaked in m1k and treated for 40 minutes at boiling point. The obtained core thread has strength L @4kl/a・, elongation 1
It was 0%. The table of the sleeping thread is written as the electronic request value K [zooo#*
Figure 1 shows what I observed closely! Available sapon binding table - circumferential direction K1
It was confirmed that there were 10 annular tubes per 5 μm length of 1 liter boat. lx2■ is a scanning microphotograph showing the surface of this fiber at a magnification of 4000 mK, and the width of the annular groove is approximately 1
It was 5-1-. The clothing obtained from this alm had an excellent feel that closely resembled natural wool. Comparison 9'11 The results obtained by the same process as Example 11 except that heated steam was used in the first and second stretching, and the temperature of the second stage Fushin-ra was 180°C. It was below. (11 Physical strength ?, 2? #/d・Elongation
1 & 5% writing degree t S 9 7 411/cd
X1m diffraction: Internal voids confirmed, no scattering. (4 Surface shape As shown in Figure 5 (magnification: 2600x), there was no particular 411 fineness in the test feeling due to the thickness with a bulge in the middle. Comparative Example 2 In Comparative Example 1 FC, ethyl 11 When the processing time was set to 20 hours, the - line table i1 had a length of 2 to 5, and a middle of 2 to .
A maggot-shaped crack appeared in the corridor. However, this scale is very weak% - II in force -
It had a surface IwTIc on it, and when I washed it with water, it came off with a smudge. In addition, the strength of the piece of iron at this time was very *<, *because it was cut during handling, it was not possible to measure the &1 strength with a normal testing machine.

[Brief explanation of the drawing]

1 and 211 are electron micrographs showing the surface condition of the fibers of the present invention. FIG. 3 is an electron micrograph showing the conventional edge fiber n1111 shape #1.

Claims (1)

[Claims] A pot ester table ■crafted mackerel, characterized in that 1 to 20 annular grooves are formed per 5 # of stirrup awl length on a circular square pottery of a 1 pot so ester table. Boat. 2 The depth of the annular groove is 1 or more.
Poso ester lIw work described in the section. 5. From Senzen Naitsuru KXmilNK iiw-t'*lesv
4IWpF#11 quintillion range where there is a small void of e.
Polyester noble processed am described in item 1 or item 2. 4 Posoester non-tsuta-strengthened iron bell is stretched in the presence of m-steam, first subjected to an electric field with an amino compound, and then subjected to alkali treatment.Table 1. Has an annular groove in the circumferential direction. Poso ester table - processing - manufacturing method of a boat. The method described in item 181114 of 54I#lIkyo, in which the vine stretching is performed in multiple stages. 4. The method according to claim 4 or 5, wherein the stretch rate is 8S% or more of the maximum elongation magnification. 1. The method according to claim 4, 5 or 116, wherein the aminated material is an alkyl group having 4 or less carbon atoms. & Patent claim 11al 14 in which the alka turf is made of Miki Some, Kiki Riki 9 or calcium hydroxide. 51I1. 41 [or the method described in Section 7]