A kind of sulfone-containing polysiloxane fiber and its preparation method

Abstract

The invention relates to a sulfone-containing polysiloxane fiber and a preparation method thereof. The sulfone-containing polysiloxane fiber of the present invention uses macrocyclic sulfone-containing siloxane as a raw material, and under alkali or acid catalysis, ring-opening polymerization obtains sulfone-containing polysiloxane. This sulfone-containing polysiloxane can be used in simple Spinning by the advanced spinning process to prepare polysiloxane fibers with good spinnability and excellent performance. The synthesis method of the present invention is simple, the introduction of the sulfone group increases the crystallinity and rigidity of the polysiloxane, and the prepared polysiloxane fiber can be recycled back to the original macrocyclic monomer with a high yield under specific conditions, green Environmental friendly.

Description

technical field

[0001] The invention relates to the field of synthetic fibers, in particular to a sulfone-containing polysiloxane fiber and a preparation method thereof. Background technique

[0002] Synthetic fiber is a fiber prepared from organically synthesized monomers, which are polymerized to obtain corresponding polymers, and then processed by spinning. At present, the development of synthetic fibers is very rapid, and the common synthetic fibers are mainly divided into three categories: polyamide fiber (nylon), polyester fiber (polyester) and polyacrylonitrile fiber (acrylic fiber). Synthetic fibers have high strength, wear resistance, and high elasticity, but their common disadvantages are poor moisture absorption and heat resistance, and they are all petroleum-based products. At present, petroleum resources are limited, and the existing fibers cannot be effectively recycled, which puts high demands on the supply of monomers.

[0003] Different from the above-ment...

Examples

Embodiment 1

[0058] (1) Add 8.6g (50mmol) of α,α'-dimercapto-p-xylene, 9.2g (50mmol) of vinyl double caps, and 0.2g of benzoin dimethyl ether (DMPA) into a round bottom flask. After sealing, it was placed under a UV lamp and stirred for 15 minutes, the system became viscous, and the crude product was obtained as a yellow viscous liquid. After vacuum drying, a light yellow transparent viscous was obtained with a yield of 16.3 g and a yield of 92%. Weigh 16.3 g (46 mmol) of the above viscous liquid and dissolve it in a flask with tetrahydrofuran. After that, 14.1 g (46 mmol) of the oxidizing agent oxone was added, and under the protection of nitrogen, the reaction was stirred at room temperature for 12 hours. Then 14.1 g (46 mmol) of oxone was added to the system, and the reaction was continued for 12 hours with stirring at room temperature. After the reaction was completed, white flaky crystals of P1OX were obtained, with a yield of 8.3 g and a yield of 55%.

[0059] The product was test...

Embodiment 2

[0065] (1) Add 6.1 g (50 mmol) of butanedithiol, 9.2 g (50 mmol) of vinyl double caps, and 0.2 g of benzoin dicarboxylic acid (DMPA) into a round bottom flask. After sealing, it was placed under a UV lamp and stirred for 15 minutes. The system became viscous, and the crude product was obtained as a colorless viscous liquid. After vacuum drying, a light yellow transparent viscous was obtained with a yield of 14.3 g and a yield of 94%. Weigh 14.1 g (46 mmol) of the above viscous liquid and dissolve it in a flask with tetrahydrofuran. After that, 14.1 g (46 mmol) of the oxidizing agent oxone was added, and under the protection of nitrogen, the reaction was stirred at room temperature for 12 hours. Then 14.1 g (46 mmol) of oxone was added to the system, and the reaction was continued for 12 h with stirring at room temperature. After the reaction was completed, white flaky crystals of P2OX were obtained with a yield of 51%.

[0066] (2) Dissolve the sulfone-containing macrocycli...

Embodiment 3

[0069] (1) Add 12.5g (50mmol) of 4'4-dimercaptodiphenylsulfide, 9.2g (50mmol) of vinyl double caps, and 0.2g of benzoin dicarboxylic acid (DMPA) into a round bottom flask. After sealing, it was placed under a UV lamp and stirred for 15 minutes, the system became viscous, and the crude product was obtained as a yellow viscous liquid. After vacuum drying, a light yellow transparent viscous was obtained with a yield of 19.5 g and a yield of 91%. Weigh 20.0 g (46 mmol) of the above viscous liquid and dissolve it in a flask with tetrahydrofuran. Afterwards, 21.1 g (69 mmol) of the oxidant oxone was added, and under the protection of nitrogen, the reaction was stirred at room temperature for 12 hours. Then 21.1 g (69 mmol) of oxone was added to the system, and the reaction was continued for 12 h with stirring at room temperature. After the reaction was completed, white flaky crystals were obtained with a yield of 55%.

[0070] (2) Dissolve the sulfone-containing macrocyclic silox...

technical field

[0001] The invention relates to the field of synthetic fibers, in particular to a sulfone-containing polysiloxane fiber and a preparation method thereof. Background technique

[0002] Synthetic fiber is a fiber prepared from organically synthesized monomers, which are polymerized to obtain corresponding polymers, and then processed by spinning. At present, the development of synthetic fibers is very rapid, and the common synthetic fibers are mainly divided into three categories: polyamide fiber (nylon), polyester fiber (polyester) and polyacrylonitrile fiber (acrylic fiber). Synthetic fibers have high strength, wear resistance, and high elasticity, but their common disadvantages are poor moisture absorption and heat resistance, and they are all petroleum-based products. At present, petroleum resources are limited, and the existing fibers cannot be effectively recycled, which puts high demands on the supply of monomers.

[0003] Different from the above-ment...

Examples

Embodiment 1

[0058] (1) Add 8.6g (50mmol) of α,α'-dimercapto-p-xylene, 9.2g (50mmol) of vinyl double caps, and 0.2g of benzoin dimethyl ether (DMPA) into a round bottom flask. After sealing, it was placed under a UV lamp and stirred for 15 minutes, the system became viscous, and the crude product was obtained as a yellow viscous liquid. After vacuum drying, a light yellow transparent viscous was obtained with a yield of 16.3 g and a yield of 92%. Weigh 16.3 g (46 mmol) of the above viscous liquid and dissolve it in a flask with tetrahydrofuran. After that, 14.1 g (46 mmol) of the oxidizing agent oxone was added, and under the protection of nitrogen, the reaction was stirred at room temperature for 12 hours. Then 14.1 g (46 mmol) of oxone was added to the system, and the reaction was continued for 12 hours with stirring at room temperature. After the reaction was completed, white flaky crystals of P1OX were obtained, with a yield of 8.3 g and a yield of 55%.

[0059] The product was test...

Embodiment 2

[0065] (1) Add 6.1 g (50 mmol) of butanedithiol, 9.2 g (50 mmol) of vinyl double caps, and 0.2 g of benzoin dicarboxylic acid (DMPA) into a round bottom flask. After sealing, it was placed under a UV lamp and stirred for 15 minutes. The system became viscous, and the crude product was obtained as a colorless viscous liquid. After vacuum drying, a light yellow transparent viscous was obtained with a yield of 14.3 g and a yield of 94%. Weigh 14.1 g (46 mmol) of the above viscous liquid and dissolve it in a flask with tetrahydrofuran. After that, 14.1 g (46 mmol) of the oxidizing agent oxone was added, and under the protection of nitrogen, the reaction was stirred at room temperature for 12 hours. Then 14.1 g (46 mmol) of oxone was added to the system, and the reaction was continued for 12 h with stirring at room temperature. After the reaction was completed, white flaky crystals of P2OX were obtained with a yield of 51%.

[0066] (2) Dissolve the sulfone-containing macrocycli...

Embodiment 3

[0069] (1) Add 12.5g (50mmol) of 4'4-dimercaptodiphenylsulfide, 9.2g (50mmol) of vinyl double caps, and 0.2g of benzoin dicarboxylic acid (DMPA) into a round bottom flask. After sealing, it was placed under a UV lamp and stirred for 15 minutes, the system became viscous, and the crude product was obtained as a yellow viscous liquid. After vacuum drying, a light yellow transparent viscous was obtained with a yield of 19.5 g and a yield of 91%. Weigh 20.0 g (46 mmol) of the above viscous liquid and dissolve it in a flask with tetrahydrofuran. Afterwards, 21.1 g (69 mmol) of the oxidant oxone was added, and under the protection of nitrogen, the reaction was stirred at room temperature for 12 hours. Then 21.1 g (69 mmol) of oxone was added to the system, and the reaction was continued for 12 h with stirring at room temperature. After the reaction was completed, white flaky crystals were obtained with a yield of 55%.

[0070] (2) Dissolve the sulfone-containing macrocyclic silox...

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