JPH09111661A - Treating method of fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating a fiber, imparting a high degree of smoothness, wear resistance and resistance to a fatigue by bending to the fiber by treating the fiber with a treating agent consisting mainly of a silane- based coupling agent. SOLUTION: This method for treating a fiber comprises treating a para-type aramide fiber by a first treating agent consisting of a silane coupling agent having a mercapto group or an epoxy group as main ingredient, and then treating by a second treating agent obtained by blending a polyurethane A consisting of a polycarbonate polyol with an aliphatic polyisocyanate, a polyethylene oxide B having 1000-7000 molecular weight, a fluorine-based resin C selected from the group of copolymers of tetrafluoroethylene with hexafluoroethylene and copolymers of tetrafluoroethylene (hexafluoroethylene) with perfluoroalkyl vinyl ether, an ethylene urea compound D expressed by the formula (R is an aromatic or an aliphatic hydrocarbon residue; n is 1 or 2) and an organopolysiloxane E by a weight ratio of 0.34-0.70 A, 0.24-0.60 B, 0.03-0.20 C, 0.03-0.15 D and 0.003-0.10 E.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a treatment method for improving the abrasion resistance of fibers. For example, the present invention relates to a fiber treatment method for simultaneously improving abrasion resistance and flex fatigue resistance by treating a fiber structure such as a rope, a cord or a woven or knitted fabric as a fiber product with a treatment agent having a specific composition.

[0002]

2. Description of the Related Art Conventionally, as a means for improving the abrasion resistance of fibers, fiber surface coating and impregnation with various treating agents have been widely used. Examples of such treating agents include polyurethane type, fluorine type and silicone type resins. Is widely used.

As a technique of using a polyurethane resin as an abrasion resistance improver, for example, "a method of impregnating fibers with a mixture containing polyurethane, polyethylene oxide and an ethylene urea compound as a main component" (Japanese Patent Application No. 58-1620).
No. 6), "A method of improving abrasion resistance by applying a resin containing a urethane prepolymer blocked product as a main component to fiber belts and subjecting it to heat treatment" (JP-A-60-173).
174), "Method of treating with a first treating agent containing a silane coupling agent as a main component, and then treating with a second treating agent containing polyurethane, polyethylene oxide and an ethylene urea compound as a main component" (Japanese Patent Publication No. No. 1-29909), “Treatment agent containing polyurethane, polyethylene oxide, fluororesin and ethylene urea compound as main components” (JP-A-3-249280).

Certainly, according to these techniques, wear resistance,
It has been found to improve flex fatigue resistance. However, with the recent sophistication of application-related technologies in the market, the performance required for products tends to increase more and more, and the above-mentioned conventional technology is insufficient in abrasion resistance depending on the application and cannot sufficiently cope with it. For example, since aramid fiber has a high strength of 20 to 22 g / denier or more, various ropes using this fiber recently,
Although cords have been developed, the aramid fiber has a drawback that it tends to be fibrillated by friction, which mainly causes strong deterioration, and cannot sufficiently exhibit the excellent high strength originally possessed by the fiber. In order to improve this drawback, the fiber surface is treated with the treatment agent shown in the above-mentioned prior art, or nylon fibers having good abrasion resistance are used as the surface layer of ropes and cords to form a core body. A device such as a composite structure using aramid fibers has been devised and put to practical use. However, these treatments are still insufficient, and in particular, fibrillation of aramid fibers cannot be completely prevented. In addition, when ropes and cords are produced in a composite structure, the elongation of the fibers to be composited is different, so the stress during use is received only by the core body. This has the drawback that the degree of development of product strength with respect to size (thickness) is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art.
It is to impart a high degree of smoothness, abrasion resistance and flex fatigue resistance to the treated fiber.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies in order to achieve such an object, and as a result, by treating the fiber with two baths having a specific composition, excellent abrasion resistance and abrasion resistance are obtained. We found that the effect of improving bending fatigue was obtained,
The present invention has been reached.

That is, according to the present invention, "after the fiber is treated with the first treatment agent containing a silane coupling agent as a main component, polyurethane (A), polyethylene oxide (B), fluorine resin (C), A method of treating a fiber, which comprises treating with a second treating agent containing an ethylene urea compound (D) and an organopolysiloxane (E) as main components is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Examples of the silane coupling agent which is the main component of the first treating agent used in the present invention include vinyltrichlorosilane, vinyltriethoxysilane, vinyltris (β-methoxyethoxy) silane, vinyltriethylsilane. Methoxysilane, γ-methacryloxypropyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, N- (Β-aminoethyl)
-Γ-aminopropyltrimethoxysilane, N- (β-
Aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-
Phenyl-γ-aminopropyltrimethoxysilane, γ
Examples thereof include mercaptopropyltrimethoxysilane and γ-chloropropyltrimethoxysilane. Among them, those having a mercapto group or an epoxy group, and especially those having a glycidyl group among the epoxy groups are preferable.

Among the main components of the second treating agent used in the present invention, first of all, as the polyurethane (A), the reaction between polyether polyol and polyisocyanate, the reaction between polyester polyol and polyisocyanate, and the reaction between polycarbonate polyol and polyisocyanate. Although it may be any high molecular polymer obtained by reaction with isocyanate, a high molecular polymer obtained by reaction of polycarbonate polyol and polyisocyanate is preferable from the viewpoint of water resistance, heat resistance and the like. Examples of the polyisocyanate used here include hexamethylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, triphenylmethane triisocyanate, and aliphatic or aromatic polyisocyanates such as naphthylene diisocyanate. However, aliphatic polyisocyanates are preferable from the viewpoint of light resistance.

Next, the oxidized polyethylene (B) is obtained by oxidizing polyethylene to have a low molecular weight, preferably having a hydroxyl group and / or a carboxyl end group, and more preferably an oxide of high density polyethylene. It has a molecular weight of 1,000 to 7,000.

The fluororesin (C) is a tetrafluoroethylene polymer, a trifluorochloroethylene polymer, a tetrafluoroethylene / hexafluoropropylene copolymer, a tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer. Polymer, 4
Fluorinated ethylene / hexafluoropropylene / perfluoroalkyl vinyl ether copolymer, vinylidene fluoride polymer, ethylene / tetrafluoroethylene copolymer and the like are preferably used. Such a fluorine-based resin is usually in the form of a dispersion prepared by dispersing a particulate fluororesin in a dispersion medium using a dispersant or a water-emulsion prepared by emulsifying the particulate fluororesin in an aqueous medium using an emulsifier. Used in.

The ethylene urea compound (D) is preferably a compound represented by the following general formula (Formula 3).

[0013]

Embedded image

[In the formula, R represents an aromatic or aliphatic hydrocarbon residue, and n is 0, 1 or 2. Examples of such a compound include, for example, octadecyl isocyanate, hexamethylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, naphthylene diisocyanate, triphenylmethane triisocyanate, and other aromatic or aliphatic isocyanates and ethyleneimine. The reaction products can be mentioned, which are usually used in the form of an aqueous dispersion.

Further, as the organopolysiloxane (E), dimethylpolysiloxane, which has a viscosity of 5 to 200,000 centipoise at 25 ° C., diphenylpolysiloxane, methylphenylpolysiloxane, and a modification represented by the following general formula (Formula 4). Polysiloxane and the like are preferably used.

[0016]

Embedded image

[However, in the formula, R₁, R_Two, R_ThreeAnd R
_FourAre methyl group, hydroxyl group, and carboxyl group, respectively.
Group, amino group, phenyl group or-(C_TwoH_FourO)_a(C
_ThreeH₆O) _bH, at least one of which is other than a methyl group
A, b is an integer of 0 to 30, and m and n are 1 or more.
Represents an integer. ] Among these organopolysiloxanes, water content due to modification
Those to which the dispersibility is given are those in which the other compounding agent is an aqueous composition.
Can be used as is, but normal silicone oil
When using, emulsified with an emulsifier etc.
It is desirable to use one.

Each of the components A to E of the second treatment agent described above
Preferably has a weight ratio satisfying the following formula at the same time. a) (A) / [(A) + (B) + (C) + (D)] = 0.34 to 0.70 b) (B) / [(A) + (B) + (C) + (D)] = 0.24-0.60 c) (C) / [(A) + (B) + (C) + (D)] = 0.03-0.20 d) (D) / [ (A) + (B) + (C) + (D)] = 0.03 to 0.15 e) (E) / [(A) + (B) + (C) + (D)] = 0. 0003-0.10

When the ratio of A in the above formula a) is less than 0.34, the strength of the treatment agent coating formed on the surface of the treated fiber or fiber structure tends to be lowered, and the treatment agent is also reduced. The interfacial adhesion between the coating film formed by and the fiber is likely to be insufficient. On the other hand, when it exceeds 0.70, the surface frictional resistance of the coating film increases and the smoothness tends to deteriorate.

In the above equation b), the ratio of B is 0.2.
When it is less than 4, the reduction in the surface frictional resistance of the treatment agent coating formed on the surface of the treated fiber or fiber structure tends to be small. On the other hand, if it exceeds 0.60, the strength of the coating film formed by the treatment agent tends to be insufficient, and the interfacial adhesion between the coating film formed by the treatment agent and the fibers tends to be lowered.

In the above formula c), the proportion of C is 0.0
When it is less than 3, not only does the surface frictional resistance of the treatment agent coating formed on the surface of the treated fiber or fiber structure decrease, but it also becomes impossible to prevent the coating from swelling due to water absorption, resulting in abrasion resistance in the presence of water. And flex fatigue resistance are reduced.
On the other hand, when it exceeds 0.20, the strength of the coating film formed by the treatment agent is lowered, and the interfacial adhesion between the coating film and the fiber is also likely to be lowered.

In the above d), the ratio of D is 0.0
When it is less than 3, the strength of the coating film formed by the treatment agent tends to be lowered, and when it exceeds 0.15, the flexibility of the coating film formed by the treatment agent is lowered and the resistance of the fiber or fiber structure after the treatment is decreased. Flexural fatigue tends to decrease.

Further, in the above equation e), the ratio of E is 0.
When it is less than 0003, foaming of the treatment agent during treatment cannot be sufficiently prevented and a beneficial defoaming effect cannot be exhibited, and the smoothness of the treatment agent film becomes insufficient.
It is not possible to expect the effect of controlling the amount of the agent attached to the yarn, the effect of reducing the generation of fluff in the yarn guide portion during the treatment, the water-repellent effect on the fiber structure after the treatment, and the like. On the other hand, when it exceeds 0.1, the strength of the coating film on the surface of the fiber structure molded by the treating agent tends to be lowered, and the ascending surface adhesive force between the coating film and the fibers tends to be lowered. In particular, when E is blended within the range of 0.001 to 0.09, various factors such as defoaming of the treating agent, generation of fluff during the treatment, surface friction resistance of the treated product, abrasion resistance, bending fatigue resistance, etc. It is most preferable because the effect of improving the characteristics is great.

Therefore, it is preferable to mix the treating agent components so that the weight ratio of the treating agent effective components simultaneously satisfies the above expressions a) to e). The treating agent compounded within such a weight ratio range not only causes less foaming and fluffing in the treating agent at the time of treatment, but the treated fiber or fiber structure has high abrasion resistance and bending fatigue resistance. Width is improved, and wear resistance and bending fatigue resistance are not significantly deteriorated particularly when water is present, resulting in extremely good performance.

The fibers treated with the first treatment agent and the second treatment agent described above are polyester, nylon, vinylon,
Any fiber made of polyethylene, aramid or the like may be used, but aramid fiber is particularly preferable because the effect of the present invention is great. These fibers are usually processed after being made into fiber products such as ropes, cords, hoses, belts and woven and knitted fabrics.

As the method for treating the textile product with the treatment agent, any conventionally known method such as a spraying method or a coating method may be used. However, both the first treatment agent and the second treatment agent usually have a relatively high viscosity. Since it is used as a low liquid substance, the method of immersing the fiber product in the treatment agent, squeezing it with a nip roll or the like as necessary, adjusting the pickup amount of the treatment agent, followed by drying and curing is the most preferable.

The solution concentration of the first treating agent is about 0.2 to 7.0% by weight, preferably 0.5 to 3.0% by weight. If the solution concentration is less than 0.2% by weight, the amount of the treatment agent attached (solid content) will be insufficient, and the effect cannot be sufficiently exhibited. On the other hand, if it exceeds 7.0% by weight, the adhesion of the second treating agent is lowered. In the present invention, after being treated with the first treating agent, it is heat-treated in a temperature range of about 100 to 170 ° C. for about 0.5 to 30 minutes and dried. The amount of the first treatment agent attached to the fibers is preferably about 0.2 to 2.0% by weight of solid content.

After being treated with the first treating agent, the fibers are subsequently treated with the second treating agent. The solid concentration of the second treating agent is suitably 1 to 25% by weight, preferably 5 to 20% by weight. The drying temperature is preferably 100 to 150 ° C., and the drying time is preferably 0.5 to 20 minutes. If the drying temperature is less than 100 ° C., the film formation by the treating agent will be insufficient, and conversely 15
If the temperature exceeds 0 ° C, the water in the treatment agent evaporates rapidly and a good film may not be formed.

The heat treatment temperature is preferably 160 to 240 ° C., the heat treatment time is preferably 0.2 to 10 minutes, and the heat treatment temperature is 160.
If the temperature is lower than 0 ° C, the coating film formed tends to be insufficiently crosslinked, and it becomes difficult to exhibit good film strength. On the other hand, if the temperature exceeds 240 ° C., the coating film deteriorates and the strength tends to decrease.

The appropriate amount (solid content) of the second treating agent adhered to the fibers is 0.6 to 15% by weight, preferably 2
10 to 10% by weight. When the adhesion amount is less than 0.6% by weight, improvement in wear resistance and bending fatigue resistance is insufficient, and it is difficult to exert practical effects. On the other hand, when it exceeds 15% by weight, the treated fiber or fiber structure becomes remarkably coarse and hard, and flex fatigue resistance is deteriorated.

The reason why the fiber or fiber structure obtained by the treatment method of the present invention exhibits excellent wear resistance and bending fatigue resistance is that the first treatment agent has a very low viscosity and is highly reactive. Not only does it permeate into fibers or textiles in a short time and evenly contact with the surface of each single fiber, but it also reacts as a cross-linking agent for the second treatment agent, resulting in the single fiber and the second treatment. It is considered that this is because the binding force with the agent is increased to improve the excellent wear resistance and flex fatigue resistance of the second treatment agent. The reason why the second treatment agent contributes to the wear resistance and the flex fatigue resistance is that polyurethane having both light resistance and water resistance and good adhesion to fibers, polyethylene oxide having a low coefficient of friction, and fluorine-based material are used. By using a resin and an organopolysiloxane together, a coating that is flexible and has a high degree of smoothness, low water absorption, and excellent water resistance is formed on the fiber surface. This is because the cohesive force of the coating is improved.

Therefore, the fiber or fiber structure treated by the method of the present invention has a small coefficient of friction and has an effect of reducing the friction between the single fibers and the friction between the fibers and the object, and thus fibrillation of the single fiber. As a result, it is possible to significantly improve the wear resistance and the bending fatigue resistance. Further, the treating agent also has an advantage that the treating agent is less foamed during the treatment and less fluff is generated in the treating step.

[0033]

[Examples] The following describes a cord-shaped fiber structure made of para-aramid fiber that is easily fibrillated by friction.
The present invention will be specifically described with reference to examples. The evaluation of wear resistance and bending fatigue resistance in the examples was carried out according to the following methods. <Abrasion Resistance Evaluation Method A> An evaluation apparatus is shown in FIG. In FIG. 1, 1 is a strained piano wire having a diameter of 0.8 mm, 2 is a load, and 3 is a cord-shaped evaluation sample. In the figure, after a load of 0.2 gram / denier is attached to one end of the sample 3, the other end of the sample is reciprocated, and the judgment is compared by the number of reciprocations until the chord sample is cut by friction with the piano wire 1. To do.

<Abrasion Resistance Evaluation Method B> FIG. 2 shows an evaluation apparatus. In FIG. 2, 4 is an outer diameter of 20 mm that rotates freely
, 5 is a roll having an outer diameter of 10 mm, which similarly rotates freely, 6 is a cord-shaped evaluation sample, 7 is a pad for interposing water in the cord-shaped evaluation sample 3, and 8 is water. . For the evaluation, the code sample 3 was 1.
After twisting 5 times and applying it to a roll 4 partially immersed in water 5 as shown in FIG.
A load of gram / denier is applied, the other end of the sample is reciprocated, and the cord-shaped samples are compared with each other by the number of reciprocations until they wear each other in a twisted place and cut.

<Bending Fatigue Resistance Evaluation Method> This is carried out by the S bending method using two pairs of freely rotating rolls having an outer diameter of 30 mm. After the cord-shaped evaluation sample is applied to this roll in an S-shape, the tensile force is set to 2.5 g / denier, the cord-shaped sample is reciprocated to cause bending fatigue, and the cord-shaped sample is cut. Compare and judge by the number of round trips to.

<Evaluation Method of Foamability by Stirring Compound Treatment Agent Solution> 100 ml of the compound treatment agent solution was weighed and put into a 250 ml graduated cylinder having an outer diameter of 4.5 cm. The height (H1) from the bottom surface to the liquid surface of the treatment agent is measured. Then, using a stirrer with two blades having a maximum length of about 1.5 cm, about 5 rpm at 2000 rpm.
After stirring the treatment agent solution for about 60 minutes, leave it for about 60 minutes, and then
The liquid level height (H2) including the foamed portion of the treatment agent is measured. For the foaming property, the foaming rate (defoaming property) was calculated by the following calculation formula and used as a criterion for judging the foaming property. Foaming rate (%) = (H2 / H1) × 100 From the above calculation result, the foaming rate is 100 to 115%.
Less than ⊚, 115 to less than 130% with ∘, 130 to 145
Less than% is indicated by Δ, and 145% or more is indicated by X.

<Method of evaluating the amount of fluff generated in the treatment step> Using a treatment machine for testing, 1 kg roll × 30 yarns = 30 kg was treated, and the treated yarn wound on the paper tube was treated as an end face portion. The appearance of fluff on the surface portion was observed and classified, and ⊚ indicates no fluff occurrence, ∘ indicates a small amount of fluff occurrence, Δ indicates a small amount of fluff occurrence, and x indicates a fluff generation amount.

Example 1 As the fiber, aramid fiber having 1500 denier and 1000 filaments (trade name: Technora: manufactured by Teijin Ltd.) was used. Γ-Glycidoxypropyltrimethoxysilane was used as the silane coupling agent of the first treatment agent, and the fibers were immersed in this aqueous solution (solid content concentration 3% by weight) for impregnation, and then 120 ° C.
Was treated with hot air for 2 minutes. The solid content of the first treatment agent with respect to the fibers was 0.9% by weight.

Then, a polyurethane (A) comprising a polycarbonate polyol and an aliphatic polyisocyanate
Aqueous dispersion (concentration of active ingredient 35% by weight), average molecular weight 4
500 aqueous dispersion of polyethylene oxide (B) (concentration of active ingredient 25% by weight), aqueous dispersion of tetrafluoroethylene polymer (C) (concentration of active ingredient 60% by weight), reaction of diphenylmethane diisocyanate and ethyleneimine Table 1 shows an aqueous dispersion of an ethylene urea compound (D) consisting of the product (concentration of active ingredient: 25% by weight) and an aqueous dispersion containing dimethyl silicone (E) as a main component (concentration of active ingredient: 40% by weight).
So that the active ingredient ratio (solid content ratio: weight ratio) shown in (4) is soaked in the second treatment agent liquid (solid content concentration is 15% by weight) mixed with each aqueous dispersion, and impregnated. After squeezing lightly, dry at 120 ℃ for 2 minutes, then 180
A heat treatment was performed at 1 ° C. for 1 minute to crosslink the treatment agent coating formed on the fiber surface. The solid content of the second treatment agent adhered to the yarn at this time was 5.2% by weight.

The classification of the foaming ratio (defoaming property) measured with respect to this treating agent solution was a rank of O as shown in Table 1. Further, as a result of observing and judging the fluff generation state of the end face and the surface of the yarn wound around the paper tube after the treatment, as shown in Table 1, the rank is marked with a circle.

The three treated aramid filament yarns obtained were aligned and twisted in the Z direction so that the number of twists was 20 turns / 10 cm, and then two of these twisted yarn products were combined to produce 20 yarns in the S direction. The cords were twisted at a number of turns of 10 times / cm to obtain a 9000 denier cord-like fiber structure. The cord-like fiber structure was evaluated for abrasion resistance A and B and flex fatigue resistance. Table 1 shows the results.

[Examples 2 to 10] Each of the aqueous dispersions (A), (B), (C), (D), and (E) used in Example 1 has the solid content ratio shown in Table 1. The same procedures as in Example 1 were carried out except that the second treating agent liquid was added so that the (weight ratio of the active ingredient) was obtained, and the abrasion resistances A and B and the bending fatigue resistance were comparatively evaluated for them. The results are shown in Table 1. Also,
Table 1 also shows the results of measuring the defoaming properties (foaming ratio) of the compounding treatment liquids used in the respective examples, and the observation results of the fluff generation state of the yarn wound around the paper tube after the treatment. It was

[Examples 11 and 12] A liquid containing a self-emulsifying type silicone (E) as a main component was used in place of the dimethyl silicone of Example 1, and the solid content ratio (active ingredient ratio: The same procedure as in Example 1 was carried out except that the weight ratio was adjusted so that the abrasion resistances A and B and the bending fatigue resistance were comparatively evaluated. Table 1 shows the results. In addition, Table 1 also shows the defoaming property of the treating agent liquid and the fluff generation observation condition of the treated product.

Comparative Example 1 For comparison, the same aramid filament fiber yarn as that used in Example 1 was used, and the first treating agent liquid and the second treating agent liquid were not used for impregnation treatment. A 9000 denier cord-like fiber structure was obtained by twisting in the same manner as in 1. and the same evaluation as in Example 1 was performed. Table 1 shows the results.

Comparative Example 2 Using the same aramid filament fiber yarn as that used in Example 1, impregnated with only the first treating agent liquid used in Example 1, and then twisted in the same manner as in Example 1. Then, a cord-like fiber structure having a denier of 9000 was obtained, which was compared and evaluated in the same manner as in Example 1. Table 1 shows the results.

[Comparative Example 3] The same aramid filament yarn as used in Example 1 was used, impregnated only with the second treating agent liquid used in Example 1, and then twisted in the same manner as in Example 1. Then, a cord-like fiber structure having a denier of 9000 was obtained, which was compared and evaluated in the same manner as in Example 1. Table 1 shows the results.

[Comparative Examples 4 to 22] The aqueous dispersions (A), (B), (C), (D) and (E) used in Example 1 were prepared as solids shown in Table 1 or Table 2. The same procedure as in Example 1 was carried out except that the second treating agent liquid was added in such a manner that the proportion (weight ratio of the active ingredient) was obtained, and comparative evaluation was performed in the same manner as in Example 1. The results are shown in Table 1 or Table 2. Further, Table 1 or 2 also shows the defoaming property (foaming rate) of each treatment agent liquid and the observation result of the fluff occurrence state of the treated yarn.

[Comparative Example 23] (A) used in Example 1
Using the liquid containing (B), (C), (D) and the self-emulsifying silicone (E) used in Example 11 as a main component, Table 2
The same procedure as in Example 1 was carried out except that the solid content ratio (active ingredient ratio: weight ratio) shown in (3) was added. Table 2 shows the results. Table 2 also shows the defoaming property of the treating agent liquid and the observation result of the fluff generation state of the treated yarn.

[0049]

[Table 1]

[0050]

[Table 2]

[0051]

The present invention has the following effects. 1) A fiber or a fibrous structure treated by the method of the present invention, which is treated with a first treating agent and subsequently with a second treating agent, has an abrasion resistance and a wear resistance both in the atmosphere and in the presence of water. Extremely excellent flex fatigue resistance. 2) Especially when a silane coupling agent containing a glycidyl group is used as the first treatment agent, the effect of improving wear resistance is great. 3) Further, the second treatment agent liquid of the present invention has an effect that it is easy to control the viscosity and the amount adhered to the fiber because the amount of foaming is small, and fluff hardly occurs in the treatment step.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an evaluation apparatus used in a wear resistance evaluation method A.

FIG. 2 is a schematic side view of an evaluation device used in a wear resistance evaluation method B.

[Explanation of symbols]

 1 Piano wire having a circular cross section with a diameter of 0.8 mm 2 Load 3 Evaluation sample 4 Free rotation roll with an outer diameter of 20 mm 5 Free rotation roll with an outer diameter of 10 mm 6 Evaluation sample 7 Pat 8 Water

Claims (4)

[Claims] 1. After treating a fiber with a first treatment agent containing a silane coupling agent as a main component, polyurethane (A), polyethylene oxide (B), fluorine resin (C), ethylene urea compound (D) And a second treatment agent containing organopolysiloxane (E) as a main component. 2. The method for treating fibers according to claim 1, wherein the silane coupling agent has a mercapto group or an epoxy group. 3. The polyurethane (A) comprises a polycarbonate polyol and an aliphatic polyisocyanate, the polyethylene oxide (B) has a molecular weight of 1,000 to 7,000, and the fluororesin (C) is a tetrafluoroethylene polymer.
Ethylene trifluoride chloride, tetrafluoroethylene / hexafluoropropylene copolymer, tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene / hexafluoropropylene / perfluoroalkyl vinyl ether copolymer Coalesce, vinylidene fluoride polymer and ethylene
An ethylene urea compound (D), which is at least one polymer selected from the group consisting of tetrafluoroethylene copolymers
Is a compound represented by the following general formula (Formula 1): [Wherein R is an aromatic or aliphatic hydrocarbon residue, n
Is 0, 1 or 2. Further, the organopolysiloxane (E) is at least one compound selected from the group consisting of dimethylpolysiloxane, diphenylpolysiloxane, methylphenylpolysiloxane and a modified polysiloxane represented by the following general formula (Formula 2). The method for treating fibers according to claim 1 or 2. Embedded image [Wherein R ₁ , R ₂ , R ₃ and R ₄ are each a methyl group, a hydroxyl group, a carboxyl group, an amino group, a phenyl group or-(C ₂ H ₄ O) _a (C ₃ H ₆ O) _b H,
At least one of them is a group other than a methyl group, and a, b
Is an integer of 0 to 30, m and n are integers of 1 or more. ] 4. The weight ratio of each component is (A) / [(A) + (B) + (C) + (D)] = 0.34 to 0.70 (B) / [(A) + (B) + (C) + (D)] = 0.24 to 0.60 (C) / [(A) + (B) + (C) + (D)] = 0.03 to 0.20 ( D) / [(A) + (B) + (C) + (D)] = 0.03 to 0.15 (E) / [(A) + (B) + (C) + (D)] = It is 0.0003-0.10, The processing method of the fiber as described in any one of Claim 1 thru | or 3.