CN112877805A - Continuous production process of silicone rubber fiber - Google Patents
Continuous production process of silicone rubber fiber Download PDFInfo
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- CN112877805A CN112877805A CN202110126696.2A CN202110126696A CN112877805A CN 112877805 A CN112877805 A CN 112877805A CN 202110126696 A CN202110126696 A CN 202110126696A CN 112877805 A CN112877805 A CN 112877805A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
Abstract
The invention relates to the technical field of preparation of elastic fibers and conductive functional fibers, in particular to a continuous production process of silicone rubber fibers. Which comprises the following steps: (1) preparing a polyvinyl alcohol solution as a skin layer spinning solution, and preparing liquid silicone rubber as a core layer spinning solution; (2) preparing polyvinyl alcohol/silicon rubber fibers; (3) curing treatment; (4) dissolving a cortex layer: transferring the polyvinyl alcohol/silicon rubber fiber cured in the step (3) into deionized water, and then heating and stirring the deionized water to completely dissolve the polyvinyl alcohol in the skin layer of the polyvinyl alcohol/silicon rubber fiber; (5) drying: and (5) transferring the fiber obtained in the step (4) to an oven for drying treatment to obtain the silicon rubber fiber. The invention can realize continuous and industrialized production, effectively improves the fiber uniformity, has stable production process, high production efficiency, simple preparation flow and low cost, and is worthy of wide popularization and application.
Description
Technical Field
The invention relates to the technical field of preparation of elastic fibers and conductive functional fibers, in particular to a continuous production process of silicone rubber fibers.
Background
With the rapid development of economy in China, the textile industry aiming at basic wearing cannot adapt to and meet higher requirements of people, and the textile fiber and textile with multifunctional purposes become the future development direction. More attention is paid to the external beauty and fashion of the textile, and more importantly, the requirements inherent to the textile material, such as comfort, heat preservation and antibacterial property, health property, environmental protection and the like of the textile material. With the increasing demand for comfortable fabrics, elastic fibers have become outstanding in the textile industry, and the application fields of the elastic fibers have been developed from the fields of traditional socks, underwear, knitwear and the like to the fields of high-elasticity casual wear, elastic fashion wear and the like. Aesthetic, comfortable, soft, and elastic properties have become the pursuit of new garment materials. Therefore, the method has profound significance for the development and research of novel elastic fibers.
At present, the materials for preparing elastic fibers and conductive functional fibers are mainly thermoplastic polyurethane elastomer rubber (TPU). Thermoplastic polyurethane elastomers (TPU) are well known to be thermoplastic elastomers that are heat-plasticized and solvent-soluble, and have high strength, good abrasion resistance, chemical resistance, hydrolysis resistance, high low temperature resistance and mold resistance. These good properties have led to thermoplastic polyurethanes being widely used in many areas such as shoe materials, cables, clothing, automobiles, medical and health, pipes, films and sheets. But the TPU fiber has the defects of easy aging and poor sunlight resistance.
Compared with TPU fibers, the silicon rubber fibers have wide working temperature range and are environment-friendly, and the silicon rubber fibers can overcome the defects of the TPU fibers while maintaining excellent performance and are an excellent choice for preparing elastic fibers. However, direct fiber formation of silicone rubber is difficult to realize, so that the preparation of silicone rubber fibers is difficult. At present, methods for preparing elastic fibers using silicone rubber are not common. The traditional preparation method of the silicone rubber fiber is that a plurality of grooves are formed on a substrate, then silicone rubber liquid is poured into the grooves, and after curing, the silicone rubber fiber is obtained. This preparation method has the following disadvantages: first, the length of the silicone rubber fibers produced is limited due to the limited length of the substrate. Secondly, the industrialized production can not be realized, and the production efficiency is low.
Patent CN102561047A utilizes liquid silicone rubber to coat on the meshed chemical fiber fabric, and uses air injection method to blow off the excess liquid silicone rubber, the cured coated mesh has good release and anti-slip properties, and is used as the liner of food in steaming dish, and the resilience of chemical fiber fabric can not be improved. Since thicker articles cannot blow excess liquid silicone rubber by means of air injection, this method is only suitable for thinner mesh fabrics and not for fibrous articles.
Patent CN 108752932 a discloses a silicone rubber elastomer/fiber composite material, and a preparation method and application thereof. The composite material of silicone rubber elastomer/fiber in the patent comprises fiber product made of chemical fiber and/or natural fiber, silicone rubber elastomer with particle shape distributed in the fiber product, and filling density of the silicone rubber elastomer is 0.005-0.200g/cm3. Preparation of Silicone rubber elastomer/fiber compositeThe method is optimized, the process is stable, and the silicone rubber elastomer/fiber composite material prepared by the process has good resilience and strong air permeability. Although the above-mentioned patent can produce a silicone rubber elastomer/fiber composite, it is not suitable for the production of pure silicone rubber fibers.
Therefore, the method for preparing the silicone rubber fiber is explored, and the silicone rubber fiber production process which is not difficult to prepare the silicone rubber fiber, can realize industrial production and application and has high production efficiency is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing a continuous production process of silicone rubber fibers, which can realize continuous and industrialized production, and has the advantages of simple production method, good stability, good fiber uniformity and high production efficiency.
The technical scheme adopted by the invention for realizing the purpose is as follows: a continuous production process of silicone rubber fibers comprises the following steps:
(1) preparing materials: firstly, preparing a polyvinyl alcohol solution as a skin layer spinning solution, and preparing liquid silicone rubber as a core layer spinning solution;
(2) preparation of polyvinyl alcohol/silicone rubber fiber: spinning in a coagulating bath liquid by a coaxial wet method by taking the skin layer spinning liquid prepared in the step (1) as a skin layer and liquid silicone rubber as a core layer to prepare polyvinyl alcohol/silicone rubber fiber;
(3) curing treatment: soaking the polyvinyl alcohol/silicon rubber fiber prepared in the step (2) in an aldehyde aqueous solution for curing;
(4) dissolving a cortex layer: transferring the polyvinyl alcohol/silicon rubber fiber cured in the step (3) into deionized water, and then heating and stirring the deionized water to completely dissolve the polyvinyl alcohol in the skin layer of the polyvinyl alcohol/silicon rubber fiber;
(5) drying: and (5) transferring the fiber obtained in the step (4) to an oven for drying treatment, and finally obtaining the silicon rubber fiber.
In the continuous production process of the silicone rubber fiber, in the step (1), the mass concentration percentage of the polyvinyl alcohol solution is 10-16%, the solvent is deionized water, the heating temperature is 80 ℃, and the stirring time is 4 hours.
In the continuous production process of the silicone rubber fiber, in the step (2), when the coaxial wet spinning is adopted, the sheath layer spinning solution and the core layer spinning solution are controlled to be injected into the coagulating bath liquid through the coaxial spinning needle head at different flow rate ratios, and the coagulating bath liquid is alcohol with the mass concentration percentage of 95%.
According to the continuous production process of the silicone rubber fibers, the flow speed of the skin layer spinning solution is set to be 5-10mm/h, the flow speed of the core layer spinning solution is set to be 5-10mm/h, and the flow speed of the skin layer spinning solution is slightly higher than that of the core layer spinning solution.
In the continuous production process of the silicone rubber fiber, in the step (3), the mass concentration percentage of the aldehyde aqueous solution is 37%, and the soaking time of the polyvinyl alcohol/silicone rubber fiber in the aldehyde aqueous solution is controlled to be 8-16 h.
In the continuous production process of the silicon rubber fiber, in the step (4), the heating temperature of the deionized water is controlled to be 95-130 ℃, and the stirring time is 1-3 h.
In the continuous production process of the silicon rubber fiber, in the step (5), the temperature of the oven is set to be 80-130 ℃, and the drying time is 1-2 hours.
In the step (2), the skin-core structure fiber spinning device is used for preparing the polyvinyl alcohol/silicone rubber fibers, and comprises a container for containing coagulation bath liquid, a supporting roller, a roller and a winding device for winding the prepared polyvinyl alcohol/silicone rubber fibers, wherein the supporting roller is provided with two coaxial needles, one coaxial needle is used for injecting the skin layer spinning liquid into the coagulation bath liquid, and the other coaxial needle is used for injecting the core layer spinning liquid.
In the continuous production process of the silicone rubber fiber, the liquid silicone rubber is one or two of aminopropyl double-terminated polydimethylsiloxane and 3- (aminopropyl) methylsiloxane-dimethylsiloxane.
In the continuous production process of the silicone rubber fiber, the aldehyde aqueous solution comprises a formaldehyde aqueous solution, a glyoxal aqueous solution and a glutaraldehyde aqueous solution.
The continuous production process of the silicone rubber fiber has the beneficial effects that: the invention adopts a novel concept of producing the silicon rubber fiber by a mode of spinning the skin-core structure fiber by a coaxial wet method. Firstly, taking silicon rubber as a core layer structure, taking polyvinyl alcohol (PVA) as a skin layer structure, and preparing polyvinyl alcohol/silicon rubber fiber by utilizing coaxial wet spinning; then, fully soaking the prepared polyvinyl alcohol/silicon rubber fiber in an aldehyde aqueous solution, and quickly curing the core layer silicon rubber by contacting the aldehyde aqueous solution; and finally, dissolving the polyvinyl alcohol in heated deionized water to obtain the silicone rubber fiber. The production method is simple, the length of the prepared silicone rubber fiber is not limited, continuous production and industrialized production are realized, and the production efficiency is greatly improved.
The invention can realize continuous and industrialized production, effectively improves the fiber uniformity, has stable production process, high production efficiency, simple preparation flow and low cost, and is worthy of wide popularization and application.
Drawings
FIG. 1 is a flow chart of the production process of the present invention;
FIG. 2 is a perspective structure diagram of a fiber spinning device with a sheath-core structure;
fig. 3 is a schematic view of polyvinyl alcohol/silicone rubber fibers soaked in aqueous aldehyde solution.
Detailed Description
The invention is further explained in detail with reference to the drawings and the specific embodiments;
example 1
As shown in fig. 1, 2 and 3, a continuous production process of silicone rubber fiber comprises the following steps:
(1) preparing materials: firstly, preparing a polyvinyl alcohol solution with the mass concentration percentage of 10% as a skin layer spinning solution, and preparing liquid silicone rubber as a core layer spinning solution. The solvent of the polyvinyl alcohol solution is deionized water, and when the polyvinyl alcohol solution is heated and stirred, the heating temperature and the stirring time can be changed according to actual conditions, and the polyvinyl alcohol solution can be heated and stirred at the same time as long as the polyvinyl alcohol is dissolved. In this example, aminopropyl di-terminated polydimethylsiloxane was used as the liquid silicone rubber, the heating temperature was set at 80 ℃ and the stirring time was 4 hours.
(2) Preparation of polyvinyl alcohol/silicone rubber fiber: and (2) taking the skin layer spinning solution prepared in the step (1) as a skin layer and liquid silicone rubber as a core layer, and spinning in coagulating bath liquid by adopting a coaxial wet method to prepare the polyvinyl alcohol/silicone rubber fiber. When the coaxial wet spinning is carried out, the cortex spinning solution and the core layer spinning solution are controlled to be injected into the coagulating bath liquid through the coaxial spinning needle head at different flow rate ratios, and in order to protect the core layer fluid, the flow rate of the cortex spinning solution is controlled to be slightly higher than that of the core layer spinning solution. In this example, the flow rate of the sheath layer spinning solution was set to 8mm/h, the flow rate of the core layer spinning solution was set to 7mm/h, and the coagulation bath liquid was 95% alcohol by mass concentration.
(3) Curing treatment: and (3) soaking the polyvinyl alcohol/silicone rubber fiber prepared in the step (2) in an aldehyde aqueous solution for curing treatment. The aldehyde aqueous solution adopted in the embodiment is formaldehyde aqueous solution, the mass concentration percentage of the formaldehyde aqueous solution is 37%, and the soaking time of the polyvinyl alcohol/silicon rubber fiber in the formaldehyde aqueous solution is controlled to be 12 h. Wherein, in order to completely react, the amount of the formaldehyde aqueous solution is calculated according to the amount of amino groups in macromolecules, and 1mol of formaldehyde is ensured to correspond to 2mol of-NH 2. In order to allow the reaction to proceed more sufficiently, the aqueous formaldehyde solution may be in an appropriate excess amount.
(4) Dissolving a cortex layer: and (4) transferring the polyvinyl alcohol/silicon rubber fiber cured in the step (3) into deionized water, and then heating and stirring the deionized water to completely dissolve the polyvinyl alcohol in the skin layer of the polyvinyl alcohol/silicon rubber fiber. The heating temperature of the deionized water is controlled to be 95 ℃, the stirring time is 2 hours, and the polyvinyl alcohol of the skin layer is ensured to be completely dissolved.
(5) Drying: and (5) transferring the fiber obtained in the step (4) to an oven for drying treatment, and finally obtaining the silicon rubber fiber. The temperature of the oven was set to 80 ℃ and the drying time was 2 h. The drying treatment aims to remove water attached to the outer layer of the silicone rubber fiber to obtain dry silicone rubber fiber.
In the step (2), a skin-core structure fiber spinning device is adopted to prepare the polyvinyl alcohol/silicone rubber fiber, the skin-core structure fiber spinning device comprises a container 2 for containing the coagulation bath solution 1, a supporting roller 3, a roller 4 and a winding device 6 for winding the prepared polyvinyl alcohol/silicone rubber fiber 5, a coaxial needle 7 is arranged on the supporting roller 3, the coaxial needle 7 is connected with an injector 8 through a hose, the number of the injectors 8 is two, one is used for injecting the skin layer spinning solution 9 into the coagulation bath solution 1, and the other is used for injecting the core layer spinning solution 10. And then soaking the prepared polyvinyl alcohol/silicon rubber fiber 5 in a formaldehyde aqueous solution 11 for curing treatment.
Example 2
The same parts as those in embodiment 1 will not be described again, except that:
(1) preparing materials: firstly, preparing a polyvinyl alcohol solution with the mass concentration percentage of 13% as a skin layer spinning solution, and preparing liquid silicone rubber as a core layer spinning solution. In this example, 3- (aminopropyl) methylsiloxane-dimethylsiloxane was used as the liquid silicone rubber, the heating temperature was set at 90 ℃ and the stirring time was 4 hours.
(2) Preparation of polyvinyl alcohol/silicone rubber fiber: and (2) taking the skin layer spinning solution prepared in the step (1) as a skin layer and liquid silicone rubber as a core layer, and spinning in coagulating bath liquid by adopting a coaxial wet method to prepare the polyvinyl alcohol/silicone rubber fiber. In this example, the flow rate of the sheath dope was set to 9mm/h, and the flow rate of the core dope was set to 8 mm/h.
(3) Curing treatment: and (3) soaking the polyvinyl alcohol/silicone rubber fiber prepared in the step (2) in an aldehyde aqueous solution for curing treatment. The aldehyde aqueous solution adopted in the embodiment is glyoxal aqueous solution, and the soaking time of the polyvinyl alcohol/silicone rubber fiber in the glyoxal aqueous solution is controlled to be 14 h.
(4) Dissolving a cortex layer: and (4) transferring the polyvinyl alcohol/silicon rubber fiber cured in the step (3) into deionized water, and then heating and stirring the deionized water to completely dissolve the polyvinyl alcohol in the skin layer of the polyvinyl alcohol/silicon rubber fiber. The heating temperature of the deionized water is controlled to be 110 ℃, and the stirring time is 2 hours, so that the polyvinyl alcohol of the skin layer is completely dissolved.
(5) Drying: and (5) transferring the fiber obtained in the step (4) to an oven for drying treatment, and finally obtaining the silicon rubber fiber. The temperature of the oven was set to 90 ℃ and the drying time was 2 h.
Example 3
The same parts as those of the embodiments 1 and 2 are not described again, but the differences are as follows:
(1) preparing materials: firstly, preparing a polyvinyl alcohol solution with the mass concentration percentage of 15% as a skin layer spinning solution, and preparing liquid silicone rubber as a core layer spinning solution. In this example, aminopropyl di-terminated polydimethylsiloxane and 3- (aminopropyl) methylsiloxane-dimethylsiloxane were used as the liquid silicone rubber, and the heating temperature was set at 100 ℃ and the stirring time was 4 hours.
(2) Preparation of polyvinyl alcohol/silicone rubber fiber: and (2) taking the skin layer spinning solution prepared in the step (1) as a skin layer and liquid silicone rubber as a core layer, and spinning in coagulating bath liquid by adopting a coaxial wet method to prepare the polyvinyl alcohol/silicone rubber fiber. In this example, the flow rate of the sheath dope was set to 10mm/h, and the flow rate of the core dope was set to 9 mm/h.
(3) Curing treatment: and (3) soaking the polyvinyl alcohol/silicone rubber fiber prepared in the step (2) in an aldehyde aqueous solution for curing treatment. The aldehyde aqueous solution adopted in the embodiment is glutaraldehyde aqueous solution, and the soaking time of the polyvinyl alcohol/silicone rubber fiber in the glutaraldehyde aqueous solution is controlled to be 15 h.
(4) Dissolving a cortex layer: and (4) transferring the polyvinyl alcohol/silicon rubber fiber cured in the step (3) into deionized water, and then heating and stirring the deionized water to completely dissolve the polyvinyl alcohol in the skin layer of the polyvinyl alcohol/silicon rubber fiber. The heating temperature of the deionized water is controlled to be 120 ℃, the stirring time is 2 hours, and the polyvinyl alcohol of the skin layer is ensured to be completely dissolved.
(5) Drying: and (5) transferring the fiber obtained in the step (4) to an oven for drying treatment, and finally obtaining the silicon rubber fiber. The temperature of the oven was set at 100 ℃ and the drying time was 2 h.
The sheath spinning solution of the invention needs to meet the following conditions that (1) the fiber can be prepared by wet spinning; (2) no reaction with silicon rubber occurs; (3) can react with aldehydes (but the resulting product is unreactive with silicone rubber); (4) after the skin-core structure is formed, the silicone rubber is not damaged when the skin layer structure is dissolved. Besides polyvinyl alcohol solution, it can also be polyvinyl chloride solution, in which the solvent is propanol. The silicone rubber may be a silicone rubber terminated with-NH 2 in addition to aminopropyl-di-terminated polydimethylsiloxane and 3- (aminopropyl) methylsiloxane-dimethylsiloxane.
In the invention, the principle of rapid curing of silicone rubber is as follows: the-NH 2 in the silicone rubber reacts with the-CHO in formaldehyde to cure the silicone rubber. Principle of dissolving polyvinyl alcohol: in deionized water at 95 ℃, polyvinyl alcohol is dissolved, and the silicon rubber is not changed, so that the dry pure silicon rubber fiber is finally prepared.
The invention firstly adopts a coaxial wet spinning method to prepare polyvinyl alcohol/silicon rubber fiber, then the polyvinyl alcohol/silicon rubber fiber is fully soaked in formaldehyde solution, the silicon rubber of a core layer is contacted with the formaldehyde solution for a short period of several seconds, the silicon rubber can be rapidly solidified into fiber, then the solidified polyvinyl alcohol/silicon rubber fiber is dissolved in heated deionized water, and finally the silicon rubber fiber is obtained. In the whole preparation process, polyvinyl alcohol plays a role in fixing the form of the silicone rubber, and the final product does not contain polyvinyl alcohol. The fiber uniformity of the prepared silicone rubber fiber is greatly improved, the fiber length can be infinitely long, the continuous and industrialized production is realized, and the production efficiency is greatly improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made according to the spirit of the present disclosure should be covered within the scope of the present disclosure.
Claims (10)
1. A continuous production process of silicone rubber fibers is characterized by comprising the following steps:
(1) preparing materials: firstly, preparing a polyvinyl alcohol solution as a skin layer spinning solution, and preparing liquid silicone rubber as a core layer spinning solution;
(2) preparation of polyvinyl alcohol/silicone rubber fiber: spinning in a coagulating bath liquid by a coaxial wet method by taking the skin layer spinning liquid prepared in the step (1) as a skin layer and liquid silicone rubber as a core layer to prepare polyvinyl alcohol/silicone rubber fiber;
(3) curing treatment: soaking the polyvinyl alcohol/silicon rubber fiber prepared in the step (2) in an aldehyde aqueous solution for curing;
(4) dissolving a cortex layer: transferring the polyvinyl alcohol/silicon rubber fiber cured in the step (3) into deionized water, and then heating and stirring the deionized water to completely dissolve the polyvinyl alcohol in the skin layer of the polyvinyl alcohol/silicon rubber fiber;
(5) drying: and (5) transferring the fiber obtained in the step (4) to an oven for drying treatment, and finally obtaining the silicon rubber fiber.
2. The continuous production process of silicone rubber fiber according to claim 1, characterized by: in the step (1), the mass concentration percentage of the polyvinyl alcohol solution is 10-16%, and the solvent is deionized water.
3. The continuous production process of silicone rubber fiber according to claim 1, characterized by: in the step (2), when the coaxial wet spinning is adopted, the sheath spinning solution and the core spinning solution are controlled to be injected into the coagulating bath solution through the coaxial spinning needle head at different flow rate ratios, and the coagulating bath solution is alcohol with the mass concentration percentage of 95%.
4. The continuous production process of silicone rubber fiber according to claim 3, characterized by: the flow rate of the skin layer spinning solution is set to be 5-10mm/h, the flow rate of the core layer spinning solution is set to be 5-10mm/h, and the flow rate of the skin layer spinning solution is slightly higher than that of the core layer spinning solution.
5. The continuous production process of silicone rubber fiber according to claim 1, characterized by: in the step (3), the mass concentration percentage of the aldehyde aqueous solution is 37%, and the soaking time of the polyvinyl alcohol/silicon rubber fiber in the aldehyde aqueous solution is controlled to be 8-16 h.
6. The continuous production process of silicone rubber fiber according to claim 1, characterized by: in the step (4), the heating temperature of the deionized water is controlled to be 95-130 ℃, and the stirring time is 1-3 h.
7. The continuous production process of silicone rubber fiber according to claim 1, characterized by: in the step (5), the temperature of the oven is set to be 80-130 ℃, and the drying time is 1-2 h.
8. The continuous production process of silicone rubber fiber according to claim 1, characterized by: in the step (2), the skin-core structure fiber spinning device is used for preparing the polyvinyl alcohol/silicone rubber fibers, the skin-core structure fiber spinning device comprises a container for containing coagulation bath liquid, a supporting roller, a roller wheel and a winding device for winding the prepared polyvinyl alcohol/silicone rubber fibers, a coaxial needle is arranged on the supporting roller and is connected with an injector through a hose, the number of the injector is two, one injector is used for injecting the skin layer spinning liquid into the coagulation bath liquid, and the other injector is used for injecting the core layer spinning liquid.
9. The continuous production process of silicone rubber fiber according to claim 1, characterized by: the liquid silicone rubber is one or two of aminopropyl double-terminated polydimethylsiloxane and 3- (aminopropyl) methylsiloxane-dimethylsiloxane.
10. The continuous production process of silicone rubber fiber according to claim 5, characterized by: the aldehyde aqueous solution comprises formaldehyde aqueous solution, glyoxal aqueous solution and glutaraldehyde aqueous solution.
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| CN113757296A (en) * | 2021-09-08 | 2021-12-07 | 青岛大学 | Rigidity-adjustable magnetorheological elastomer shock absorber and preparation process thereof |
| CN114407396A (en) * | 2022-01-19 | 2022-04-29 | 天津城建大学 | Continuous batch preparation method of silicone rubber microfiber and microtubule |
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| CN114407396A (en) * | 2022-01-19 | 2022-04-29 | 天津城建大学 | Continuous batch preparation method of silicone rubber microfiber and microtubule |
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