JPS6264862A - Aniline-based polymer composition - Google Patents

Abstract

PURPOSE:To obtain the titled compsn. providing a molding having excellent moldability, mechanical properties and conductivity, by blending an aniline-based polymer, an aq. fluororesin dispersion and a low-boiling, water-soluble org. solvent. CONSTITUTION:100pts.wt. aniline-based polymer (e.g., a polymeric N-methylanine) optionally contg. a polymn. solvent (e.g. water) and a conductive material (e.g. metallic powder), 1-20pts.wt. (on a solid basis) aq. dispersion contg. 20-70wt% fluororesin (e.g. polychlorotrifluoroethylene) and 0.5-30pts.wt. low-boiling, water-soluble org. solvent boiling below 160 deg.C (e.g. CH3OH) are blended together to obtain the titled composition. This composition is press-molded at a temp. from room temp. to 160 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aniline polymer composition that provides a molded article with excellent moldability, high mechanical strength, and good electrical conductivity.

Dead Rice II Aniline-based polymers can freely control their electrical conductivity over a wide range of 10-10 to 101101S-C by changing the nitrogen atom in the aniline moiety from a neutral type to a cationic type. Because of this, it is attracting attention as a conductive material for manufacturing electrical equipment parts.

However, since the above-mentioned aniline polymer is insoluble and infusible, it is difficult to mold it, and even if it is attempted to produce a molded product of a desired size, it cannot be used to produce a practical molded product with high mechanical strength. It has the disadvantage that it is difficult to obtain.

This has been an obstacle to the development of various applications for aniline polymers, and solutions to these obstacles have been strongly desired from various quarters.

An object of the present invention is to solve the above-mentioned drawbacks of conventional aniline polymers, and to produce aniline polymers that have excellent moldability, high mechanical strength, and good N conductivity. An object of the present invention is to provide a polymer composition.

According to the present invention, 100 parts by weight of the aniline polymer and an aqueous dispersion of fluororesin are mixed in a solid content of 1 to 20 parts by weight.
An aniline polymer composition comprising 10.5 to 30 parts by weight of a low-boiling water-soluble organic solvent is provided.

The aniline polymer used in the present invention includes, for example, homopolymers of aniline, N-methylaniline, 2-methylaniline, 2-methoxyaniline, 2-aminoaniline, 2-nitroaniline, and the like. Further, the aniline polymer used in the present invention may have a salt structure by adding an appropriate acid to the aniline polymer. These aniline polymers may contain a polymerization solvent such as water, or may be a composite with a conductive material such as carbon black or metal powder. Two or more types of aniline polymers may be used in combination.

The fluororesin dispersion used in the present invention includes, for example, poly-4-fluoroethylene, polychlorotrifluoroethylene, poly-vinylidene fluoride, polyvinyl fluoride, 4-fluoroethylene and 6-fluoroethylene. Fluororesins such as copolymers with propylene, copolymers with 4-fluoroethylene and ethylene, etc. are each in the form of aqueous disbarges. The concentration of fluororesin in the water-based ice version is not particularly limited, but
Generally, an aqueous dispersion having a fluororesin concentration of 20 to 70% by weight is used. Aqueous dispersions of fluororesin can be used in combination of two or more types.

The mixing ratio of the aqueous dispersion of the aniline polymer and the fluororesin is 1 to 20 parts by weight of the fluororesin ice version in terms of solid content, preferably 4 to 15 parts by weight per 100 parts by weight of the aniline polymer. be. The mixing ratio of the water-based ice version of fluororesin is 1f in terms of solid content.
! ffi part J: If it is less, the molding processability is poor and the mechanical strength of the obtained molded product is weak. On the other hand, if the mixing ratio of the aqueous fluororesin dispersion is more than 20 parts by weight, this is not preferable because the original properties of the aniline polymer will be impaired.

-31 The low boiling point water-soluble organic solvent used in the present invention is:
It means a water-soluble organic solvent with a boiling point of 160° C. or less, and representative examples thereof include acetone, methyl alcohol, ethyl alcohol, methyl alcohol, methyl acetate, and the like. Two or more of these low-boiling water-soluble organic solvents may be used in combination.

Use of a water-soluble organic solvent having a high boiling point, for example, a boiling point higher than 160° C., is not preferable because high heat is required to remove the solvent, which may result in deterioration of the aniline polymer.

Further, when a water-insoluble organic solvent is used, it is not preferable because the aqueous dispersion of the aniline polymer or fluororesin is difficult to disperse.

The mixing ratio of the low-boiling water-soluble organic solvent is 0.5 to 30 parts by weight per 100 parts by weight of the aniline polymer. If the mixing ratio of the low-boiling water-soluble organic solvent is less than 0.5 parts by weight,
The mechanical strength of the obtained molded article is not sufficient, and conversely, if the mixing ratio of the low-boiling water-soluble organic solvent is more than 30 parts by weight, it becomes difficult to remove the low-boiling water-soluble organic solvent, which is not preferable.

-41 The aniline polymer composition of the present invention can be prepared by simultaneously mixing and stirring three components: the aniline polymer, the aqueous ice version of the fluororesin, and the low-boiling water-soluble organic solvent. However, in order to obtain a homogeneous aniline polymer composition, an aqueous dispersion of the aniline polymer and fluororesin is mixed in advance, a low boiling point water-soluble organic solvent is added to this mixture, and the mixture is stirred to obtain a uniform composition. It is preferable to mix it with

For mixing, known stirring methods or other methods can be used, and the mixing time varies depending on the type of aniline polymer, aqueous dispersion of fluororesin, and low-boiling water-soluble organic solvent used. Although the time cannot be determined, it is generally within the range of several minutes to several hours.

The sufficiently mixed aniline polymer composition of the present invention can be molded into various molded bodies by heating and pressing. The temperature mark during molding is between room temperature and 160°C, and the pressure to be applied cannot be determined in part because it changes depending on the desired thickness and density of the molded product. Further, the molding may be performed under reduced pressure.

Most of the water and low-boiling water-soluble organic solvent contained in the aniline polymer composition evaporate during molding of the aniline polymer composition, but are completely removed by drying the molded product. .

The aniline polymer composition of the present invention has excellent moldability, and the molded articles obtained from this composition have high mechanical strength and good electrical conductivity. The molded bodies are useful as constituent materials for solar cells, secondary batteries, secondary batteries, photoconductive materials, and the like. For example, when a molded body obtained from an aniline polymer composition is used as an electrode for a secondary battery, the proportion of the aniline polymer in the aniline polymer composition is high, and the mechanical strength of the molded body is high. ,
A lightweight, small-sized secondary battery with high energy density can be produced.

Fire-Healing The present invention will now be described in more detail with reference to Examples and Comparative Examples.

In addition, the bending strength of the sheet is determined by the length 4 c from the sheet.
A test piece of 1 cm in ms was cut out and measured according to a known bending strength measurement method. Table 1 shows the measured values of bending strength for each piece.

Example 1 Boreek 1 was added to 100 parts by weight of a polymer of N-methylaniline.
After adding 8 parts by weight of an aqueous ice version of corotrifluoroethylene (solid content: 60% by weight) and 1 part by weight of carbon black, they were thoroughly mixed in an agate bowl. Next, 8 parts by weight of methyl alcohol was added to this mixture and thoroughly mixed. The resulting composition was heated to 40°C.
, 70℃ after heating and pressurizing at 100Kg/cm2
A sheet was prepared by drying under reduced pressure. The obtained sheet is
It was extremely uniform and had high bending strength as shown in Table 1.

Example 2 In Example 1, instead of using 8 parts by weight of poly-chlorotrifluoroethylene aqueous dispersion in terms of solid content, an aqueous poly-4-fluoroethylene dispersion (solid content 150% by weight) was used. A sheet was produced in the same manner as in Example 1, except that 10 parts by weight in terms of solid content were used and 12 parts by weight of ahitone was used instead of 8 parts by weight of methyl alcohol.

The obtained sheet was uniform and had high bending strength as shown in Table 1.

Example 3 The same procedure as in Example 3 was carried out, except that an aniline polymer was used instead of the N-methylaniline polymer in Example 1, and methyl alcohol was not added in Example 3. A sheet was produced.

Comparative Example 2 A sheet was produced in the same manner as in Example 1, except that Boreek [10 trifluoroethylene powder was used instead of the poly-chlorotrifluoroethylene aqueous dispersion in Example 1.

Table 1

Claims (1)

[Claims] An aniline polymer composition comprising 100 parts by weight of an aniline polymer, 1 to 20 parts by weight of an aqueous fluororesin dispersion in terms of solid content, and 0.5 to 30 parts by weight of a low-boiling water-soluble organic solvent.