JPH0892833A - New flame-retardant textile composite - Google Patents

Abstract

PURPOSE: To obtain the subject textile composite useful in wide fields, by blending halogen-contg. fibers with fibers containing a compound having an effect synergistic with a halogen in terms of flame retardancy. CONSTITUTION: Firstly, a spinning dope composed of an aqueous solution of polyvinyl alcohol and an aqueous emulsion of polyvinyl chloride is subjected to wet spinning in a coagulating bath consisting of an aqueous sodium sulfate solution followed by drawing and heat-setting of the resultant undrawn yarn, which is then subjected to specified acetalization to produce halogen-contg. polychlal fibers. Separately, a viscose dope is incorporated with an antimony compound having synergistic effect with a halogen in terms of flame retardancy followed by conducting a spinning to form antimony-contg. viscose rayon fibers. Next, the viscose rayon fibers are blended with the halogen-contg. polychlal fibers at specified proportions to obtain the objective flame-retardant textile fiber composite. This composite may further be blended with combustible natural or chemical fibers.

Description

Detailed Description of the Invention

[0001]

This invention relates to a new type of flame retardant composite. More specifically, the present invention relates to an overall flame-retardant fiber composite comprising a halogen-containing fiber and a fiber containing a compound having a synergistic effect with halogen in flame retardancy.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for flame-retardant fibers for clothing, bedding and interiors, but conventional flame-retardant research has been directed to a single fiber. But,
Only one kind of flame-retardant fiber can not meet the high demands of consumers, and in order to improve the performance such as texture, hygroscopicity, and visual feeling, two or more kinds of fibers of flame-retardant fiber and other fiber Composite fibers having a mixture of a. For example, a composite fiber of polyclar flame-retardant fiber containing a tin compound and an antimony compound and one or more fibers selected from polyester fiber, acrylic fiber and cotton (Japanese Patent Publication No. 55-20006).
Also, a composite fiber (Japanese Patent Publication No. 4-18050) prepared by mixing a flame-retardant fiber containing a halogen compound and an antimony compound with a natural fiber, a chemical fiber, etc. has been reported. The fiber shown in Fig. 2 contained a halogen compound and an antimony compound.

[0003]

However, these composite fibers must be highly flame-retardant because it is necessary to make a large amount of coexistent combustible fibers flame-retardant. Therefore, the amount of the flame retardant in the flame-retardant fiber tends to increase, which not only causes various troubles during the process based on fiber cutting due to an increase in spinning pressure and a decrease in single fiber strength in the fiber manufacturing stage, but also the fiber. However, even if the above occurs, various troubles occur during the process based on the cotton wool due to the short fiber at the spinning stage, and in the extreme case, there is a drawback that the spinning is impossible.

[0004]

DISCLOSURE OF THE INVENTION The present inventors have conducted research on a flame-retardant fiber composite which does not have such drawbacks.
Good flame retardancy as a whole simply by physically mixing a fiber containing halogen and a fiber containing a compound having a synergistic effect with halogen in terms of flame retardancy in the state where a space exists between both fibers. The present invention has been completed based on the finding that it exhibits good properties, good spinnability in the production process of each fiber, and that a fiber composite obtained by further mixing a combustible fiber in a mixture of this fiber also has excellent flame retardancy. Came to do. That is, the present invention
It is intended to provide a flame-retardant fiber composite comprising a fiber having a halogen and a fiber containing a compound having a synergistic action with halogen in flame retardancy.

The halogen-containing fibers used in the present invention are essentially halogen-free, in addition to halogen-containing polyclar fiber, modacrylic fiber, polyvinyl chloride fiber, polyvinylidene chloride fiber, and essentially no halogen. Any fiber containing a halogen-containing compound can be used as the copolymer type, the kneading type, or the post-processing type in the fiber, but the polyclar fiber is preferable. The content of halogen varies depending on the fiber, but is 10-80.
It is about% by weight. Fibers containing halogen and a compound having a synergistic effect on flame retardancy include, for example, Sb compounds, Mo compounds, Zr compounds, P compounds,
Zn compounds and the like are known, preferably Sb compounds can be mentioned, but these compounds are 5 to 50 wt%
All fibers contained as a grade, a kneading type, a copolymerizing type or a post-processing type can be used. Also, as flammable fibers, cotton, rayon, polyester,
The limiting oxygen index of nylon, acrylic, vinylon, etc. is 26
All fibers below can be used. In the fiber composite of the present invention, the blending of each fiber may be set to an optimum value depending on the flame retardant performance, processing performance and consumption performance required for the fiber product, and the halogen-containing fiber may be 20 to 80 parts by weight. , 80 to 20 parts by weight of a fiber containing a compound having a synergistic effect with halogen, is combined to make 100 parts. In the present invention, good flame retardancy is exhibited even if other combustible fibers are compounded. The combustible fiber is preferably about 20 to 300 parts by weight with respect to 100 parts by weight of the fiber composite.

A feature of the present invention is that a flame-retardant fiber having halogen and a compound exhibiting a synergistic effect on halogen and flame retardancy are contained in another fiber and mixed to form a fiber composite, The same flame retardancy as when both compounds are in the same solid is exhibited, and the spinnability in the manufacturing process of each fiber and the spinnability in the spinning process are improved.

[0007]

The present invention will be described in detail with reference to the following examples. Production Examples 1-2 Polyvinyl alcohol aqueous solution and polyvinyl chloride aqueous emulsion were used in a solid content ratio of 50/50, and a total solid content concentration of 15
%, And Sb ₂ O ₅ was added and mixed so as to be 10% with respect to the above solid content to prepare a spinning dope.
The spinning solution obtained was treated with a pore size of 0.08 mm and a pore number of 500.
It is extruded into a coagulation bath of a 40 ° C. saturated sodium sulfate aqueous solution through the nozzle of No. 1 to coagulate. This fiber was stretched 5 times, re-stretched 1.2 times at 180 ° C., heat-set, and the obtained fiber was acetalized and post-treated in a predetermined manner to obtain Sb ₂ O ₅ -containing polyclar fiber. (Production Example 1). Further, regular spinning was carried out in the same manner without adding Sb ₂ O ₅ to the spinning dope to obtain regular polyclar (Production Example 2).

Production Examples 3 to 4 Cellulose 9. Sb ₂ O ₅ was added to and mixed with viscose consisting of O% and caustic soda of 5.6% so as to be 10% of cellulose to prepare a spinning dope. The spinning solution thus obtained was subjected to 100 g / l of sulfuric acid and 350 g / sodium sulfate using a nozzle having a nozzle hole diameter of 0.06 mm and a nozzle number of 10,000.
1, extruded into one bath of 40 ° C. consisting of 15 g / l of zinc sulphate and water and 1.5 in a two bath of 90 ° C. containing 15 g / l of sulfuric acid.
Stretch twice and coagulate and regenerate. Wash and dry this fiber with water,
A viscose rayon containing Sb ₂ O ₅ was obtained (Production Example 3). Also, regular rayon was obtained by spinning in the same manner without adding Sb ₂ O ₅ to the spinning dope (Production Example 4).

Examples 1-2, Comparative Examples 1-2 Regular polyclar fibers and Sb-containing polyclar fibers obtained in Production Examples 1-2 and regular viscose rayon and Sb-containing viscous fibers obtained in Production Examples 3-4. The course rayon was mixed at the ratio shown in Table 1 and the LOI value was measured. The results are shown in Table 1. The LOI value of regular polyclar is 25.0, the LOI value of polycral containing 10% Sb ₂ O ₅ is 29.0, the LOI value of regular rayon is 18.0, and the LOI value of 10% Sb ₂ O _{5 is} 10%. The LOI value was 19.0. As is clear from Table 1, the LO of the composite having a mixing ratio of 50/50 in the case of using the regular type as the polyclar of Example 1 and the one in which 10% of Sb ₂ O ₅ was kneaded as the rayon was used.
The I value is 26.0, and Sb ₂ O ₅ as polyclar
The same value as in Comparative Example 1 in which 10% was mixed was used, and there was no problem in processing performance and consumption performance in production. However, in Comparative Example 1, the manufacturing process of polyclar became unstable, and the heat-resistant coloring property and the spinning property were deteriorated.
On the other hand, as in Example 2, the fiber composite obtained by mixing regular rayon, which is a flammable fiber, with the composite having the same mixing ratio of regular polyclar and Sb ₂ O ₅ -containing rayon is the composite of Example 2. The same value as the LOI value of Comparative Example 2, which is a composite of Sb ₂ O ₅ -containing polyclar and regular rayon having the same amount of Sb ₂ O _{5 as} that of the novel fiber composite of Example 1, was obtained. Even when combustible fiber was compounded, it showed excellent flame retardancy.

[0010]

[Table 1]

[0011]

As described above, according to the present invention, there is no difficulty in the technology for producing a flame-retardant fiber, and there is no technical problem in processing performance and consumption performance as a fiber product.
Flame retardant fiber composites useful in a wide range of fields are provided.

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Claims (4)

[Claims] 1. A flame-retardant fiber composite comprising a fiber having a halogen and a fiber containing a compound having a synergistic effect with halogen in flame retardancy. 2. The fiber composite according to claim 1, wherein the compound having a synergistic effect with halogen in flame retardancy is an antimony compound. 3. The fiber according to claim 1, wherein the fiber having a halogen is a polyclar fiber, and the fiber containing a compound having a synergistic effect with halogen in flame retardancy is a viscose rayon fiber containing an antimony compound. Complex. 4. A flame-retardant fiber composite obtained by combining the fiber composite according to claim 1 and at least one kind of combustible natural fiber and chemical fiber.