KR20230073665A - Thermoplastic vulcanizate comprising fluorosilicone rubber and method for preparing the same - Google Patents

Abstract

The present invention provides a thermoplastic vulcanizate in which fluoro-silicone rubber and a thermoplastic polymer represented by the structural formula 1 are dynamically crosslinked. Accordingly, the thermoplastic vulcanizate containing fluoro-silicone replaces a part of parts used only with fluoro-silicone with thermoplastic polymers, thereby reducing the use amount of fluoro-silicone. The thermoplastic cross-linked product is manufactured by dynamic cross-linking with thermoplastic polymers, thereby increasing processing efficiency. In addition, cold resistance, oil resistance, and compression set rate are increased in comparison with conventional dynamic cross-linked products with EPDM, thereby increasing usability as industrial parts in the automobile and aerospace fields.

Description

Thermoplastic vulcanizate comprising fluorosilicone rubber and method for preparing the same}

The present invention relates to a thermoplastic vulcanizate and a manufacturing method thereof, and more particularly, to a thermoplastic vulcanizate containing fluorosilicone rubber and a manufacturing method thereof.

As the demand for developing functional materials increases in modern industry, the need for organic polymers with new properties is increasing. In particular, abrasion resistance and chemical resistance are being strengthened in the latest electric, electronic and semiconductor industries, and AF (Anti-Finger) and HC (Hard Coating) functions are required for automotive interior applications. In the latest electronics and automobile industries, high-functional polymers that satisfy process chemical resistance, oil resistance, cryogenic stability, and contamination resistance are required, and fluorosilicone is one of the materials that satisfy these requirements. Fluorine polymers are polymers with chemical resistance, low surface energy, low friction coefficient, and low dielectric constant due to the stability of strong covalent bonds between fluorine and carbon and unique intramolecular and intermolecular interactions. However, conventional carbon-carbon bonded polymers have low thermal stability and poor weatherability due to the rigidity of the bond, and may be harmful to the human body due to the structure and activity of the polymer. In addition, since the glass transition temperature is formed quite high at about -15 ° C and flexibility at low temperatures is very low, ease of processing is poor and compression molding is limited.

In order to overcome these disadvantages, attempts have been made to incorporate fluorine reactive groups into silicone polymers, which combine inorganic main chains and organic side chains simultaneously, and which are strong and flexible obtained from Si-O, and which can simultaneously apply organic properties. As a result, It was first developed to increase the solvent resistance of dimethyl silicone rubber (VMQ), and the substitution of trifluoropropyl groups for vinyl and methyl groups in Si became the beginning of today's fluorosilicone. Fluorosilicone is almost the only material that combines the properties of conventional fluoropolymers, such as solvent resistance, chemical resistance, oil resistance, and water resistance, with the properties of silicone itself, such as heat resistance, cold resistance, and weather resistance. Thanks to these unique properties, it is currently a material that is in the spotlight in automobiles, electronics, aerospace, semiconductors, and other high value-added industries.

The structure of a general silicone polymer is composed of an organic reactive group at the remaining two reaction points of silicon, with a siloxane bond (-Si-O-Si) composed of Si:O as the main skeleton. When fluorine is bonded to this organic reactive group or a functional group containing fluorine is bonded, the silicone polymer can be defined as fluorinated silicone. In general, fluorine silicon is a form in which Si and fluorine are not directly bonded to each other like Si-F, but a functional group such as trifluoropropyl is bonded to the backbone. Fluorine groups in fluorosilicone are oriented towards the surface in the silicone polymer and self-assemble. Thanks to this unique orientation of fluorine groups, the surface of fluorine silicon is capable of maintaining very low energy. Fluorosilicone has the characteristics of both fluoropolymer and silicon thanks to the Si-O bond in the main chain and the fluorine functional group on the side. Characteristics of silicon polymers, such as ease of processing, weather resistance, and heat resistance, are superior to those of carbon-based polymers, and acid resistance, oil resistance, and cold resistance, characteristics of fluorine reactors, are very superior to conventional silicones.

Korean Patent Registration No. 10-1732723 Korean Patent Publication No. 10-2015-0016267

The present invention can reduce the amount of fluorosilicone used by replacing parts used only with fluorosilicone with some thermoplastic polymers, and improve processing efficiency by preparing thermoplastic crosslinked products by dynamic crosslinking with thermoplastic polymers. It is an object of the present invention to provide a thermoplastic crosslinked product containing fluorosilicone that can improve cold resistance, oil resistance, and compression set compared to a dynamic crosslinked product to increase utilization as an industrial part in the automobile and aerospace fields and a method for manufacturing the same.

According to one aspect of the present invention,

A thermoplastic crosslinked product in which a fluorosilicone rubber represented by the following Structural Formula 1 and a thermoplastic polymer are dynamically crosslinked is provided.

[Structural Formula 1]

In structural formula 1,

R ¹ is a C1 to C10 alkyl group;

R ² is a C2 to C10 alkenyl group;

R ³ and R ⁴ are each independently a C1 to C10 alkyl group;

R ⁵ is a C1 to C10 alkyl group;

이고, L ¹ is a C1 to C10 alkylene group, or

ego,

m is the number of repeating units, which is an integer from 1 to 10;

R ⁶ to R ⁸ are each independently a C1 to C10 alkyl group or a fluoro group, and at least one of R ⁶ to R ⁸ is a fluoro group;

p, q and r are the number of repeating units.

Preferably, in Structural Formula 1,

R ¹ is a C1 to C7 alkyl group;

R ² is a C2 to C7 alkenyl group;

R ³ and R ⁴ are each independently a C1 to C7 alkyl group;

R ⁵ is a C1 to C7 alkyl group;

이고, L ¹ is a C1 to C7 alkylene group, or

ego,

m is the number of repeating units, which is an integer from 1 to 4;

R ⁶ to R ⁸ are a fluoro group;

p, q and r may be the number of repeating units.

More preferably, the fluorosilicone rubber represented by Structural Formula 1 may be FVMQ (fluorovinylmethylsiloxane rubber).

The FVMQ (fluorovinylmethylsiloxane rubber) may have a weight average molecular weight (Mw) of 5,000 to 250,000 g/mol.

The thermoplastic polymer is polypropylene, polyethylene, polyamide, polyphenylene sulfide, polyphosphoric acid, polyphthalamide, polyetheretherketone ( polyether ether ketone), polyetherimide. And it may be at least one selected from polysulfone and polyethersulfone.

The thermoplastic crosslinked material may be dynamically crosslinked by blending the fluorosilicone rubber represented by Structural Formula 1 and the thermoplastic polymer in a weight ratio of 25:75 to 75:25.

According to another aspect of the present invention,

(a) mixing a fluorosilicone rubber represented by Structural Formula 1 and a thermoplastic resin by introducing them into a mixer; and (b) inducing a dynamic crosslinking reaction by adding a vulcanization accelerator, an antioxidant, a vulcanization accelerator, and sulfur to the mixer.

[Structural Formula 1]

In structural formula 1,

R ¹ is a C1 to C10 alkyl group;

R ² is a C2 to C10 alkenyl group;

R ³ and R ⁴ are each independently a C1 to C10 alkyl group;

R ⁵ is a C1 to C10 alkyl group;

L ¹ is a C1 to C10 alkylene group;

R ⁶ to R ⁸ are each independently a C1 to C10 alkyl group or a fluoro group, and at least one of R ⁶ to R ⁸ is a fluoro group;

p, q and r are the number of repeating units.

The mixer may maintain a temperature condition of 150 to 200 °C.

The vulcanization accelerator may be at least one selected from zinc oxide (ZnO) and stearic acid.

The vulcanization accelerator may be any one selected from sulfenamide-based, thiazole-based, thiuram-based, thiourea-based, and guanidine-based vulcanization accelerators.

An antioxidant may be further added to the mixer in step (b).

After step (b), step (c) of pelletizing the prepared thermoplastic crosslinked material and molding it into a predetermined shape may be further performed.

According to another aspect of the present invention,

A rubber composition comprising the thermoplastic crosslinked product is provided.

The rubber composition may further include a reinforcing material.

The reinforcing material is carbon black, silica, calcium carbonate, clay, aluminum hydroxide, lignin, silicate, talc, syndiotactic-1,2-polybutadiene, titanium oxide, clay, layered silicate, tungsten, talc, mica, vermiculite and hydro It may be at least one selected from talcite.

According to another aspect of the present invention,

An industrial part comprising the rubber composition is provided.

The industrial parts may be any one selected from automobile parts, space/aviation parts, and electronic parts.

The thermoplastic cross-linked product containing fluorosilicone of the present invention can reduce the amount of fluorosilicone used by replacing the part used only with fluorosilicone with some thermoplastic polymer, and improves processing efficiency by preparing a thermoplastic cross-linked product by dynamic crosslinking with thermoplastic polymer. It can improve cold resistance, oil resistance and compression set compared to the conventional dynamic cross-linked product with EPDM, thereby increasing its usability as an industrial part in the automobile and aerospace fields.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, it should be understood that this is not intended to limit the present invention to specific embodiments, and includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, the thermoplastic vulcanizate of the present invention will be described.

The thermoplastic crosslinked product of the present invention is a dynamically crosslinked fluorosilicone rubber represented by the following Structural Formula 1 and a thermoplastic polymer.

[Structural Formula 1]

In structural formula 1,

R ¹ is a C1 to C10 alkyl group;

R ² is a C2 to C10 alkenyl group;

R ³ and R ⁴ are each independently a C1 to C10 alkyl group;

R ⁵ is a C1 to C10 alkyl group;

이고, L ¹ is a C1 to C10 alkylene group, or

ego,

m is the number of repeating units, which is an integer from 1 to 10;

R ⁶ to R ⁸ are each independently a C1 to C10 alkyl group or a fluoro group, and at least one of R ⁶ to R ⁸ is a fluoro group;

p, q and r may be the number of repeating units.

Preferably, in Structural Formula 1,

R ¹ is a C1 to C7 alkyl group;

R ² is a C2 to C7 alkenyl group;

R ³ and R ⁴ are each independently a C1 to C7 alkyl group;

R ⁵ is a C1 to C7 alkyl group;

이고, L ¹ is a C1 to C7 alkylene group, or

ego,

m is the number of repeating units, which is an integer from 1 to 4;

R ⁶ to R ⁸ are a fluoro group;

p, q and r may be the number of repeating units.

More preferably, the fluorosilicone rubber represented by Structural Formula 1 may be FVMQ (fluorovinylmethylsiloxane rubber) represented by Formula 1 below.

[Formula 1]

The weight average molecular weight (Mw) of the FVMQ (fluorovinylmethylsiloxane rubber) may be preferably 5,000 to 250,000 g/mol, more preferably 10,000 to 80,000 g/mol.

The thermoplastic polymer is polypropylene, polyethylene, polyamide, polyphenylene sulfide, polyphosphoric acid, polyphthal amide, polyester , polyether ether ketone, polyetherimide. It may be polysulfone, polyethersulfone, etc., preferably polypropylene, polyethylene, polyamide, polyphenylene sulfide, polyphthalamide, polyester, etc., more preferably polypropylene, polyethylene etc., and more preferably polypropylene.

The thermoplastic cross-linked product is preferably dynamically cross-linked by blending the fluorosilicone rubber represented by Structural Formula 1 and the thermoplastic polymer at a weight ratio of 25:75 to 75:25, more preferably at a weight ratio of 30:70 to 70:30. , and even more preferably blended at a weight ratio of 35:65 to 65:35 to be dynamically crosslinked. It is possible to improve cold resistance, oil resistance, and compression crack reduction by preparing a thermoplastic crosslinked material that is blended within the above range and dynamically crosslinked.

Hereinafter, the method for preparing the thermoplastic crosslinked product of the present invention will be described.

First, the fluorosilicone rubber represented by Structural Formula 1 and the thermoplastic resin are put into a mixer and mixed.

[Structural Formula 1]

In structural formula 1,

R ¹ is a C1 to C10 alkyl group;

R ² is a C2 to C10 alkenyl group;

R ³ and R ⁴ are each independently a C1 to C10 alkyl group;

R ⁵ is a C1 to C10 alkyl group;

L ¹ is a C1 to C10 alkylene group;

R ⁶ to R ⁸ are each independently a C1 to C10 alkyl group or a fluoro group, and at least one of R ⁶ to R ⁸ is a fluoro group;

p, q and r are the number of repeating units.

Since the fluorosilicone rubber represented by Structural Formula 1 is the same as described above, reference will be made to the above description for specific details. The fluorosilicone rubber represented by Structural Formula 1 is most preferably FVMQ (fluorovinylmethylsiloxane rubber) represented by Formula 1 above.

The fluorosilicone rubber and thermoplastic polymer represented by Structural Formula 1 are preferably added in a weight ratio of 25:75 to 75:25, more preferably in a weight ratio of 30:70 to 70:30, and even more preferably 35: It may be added in a weight ratio of 65 to 65:35. It is possible to improve cold resistance, oil resistance, and compression crack reduction by preparing a thermoplastic crosslinked material that is blended within the above range and dynamically crosslinked.

Next, a vulcanization accelerator, a vulcanization accelerator, and sulfur are added to the mixer to induce a dynamic crosslinking reaction (step b).

Preferably, the mixer maintains a temperature of 150 to 200 °C, more preferably 160 to 190 °C. A dynamic crosslinking reaction can be most actively induced in the above temperature range.

The thermoplastic polymer is polypropylene, polyethylene, polyamide, polyphenylene sulfide, polyphosphoric acid, polyphthal amide, polyester , polyether ether ketone, polyetherimide. It may be polysulfone, polyethersulfone, etc., preferably polypropylene, polyethylene, polyamide, polyphenylene sulfide, polyphthalamide, polyester, etc., more preferably polypropylene, polyethylene etc., and more preferably polypropylene.

The vulcanization accelerator may be at least one selected from zinc oxide (ZnO) and stearic acid.

The vulcanization accelerator may be a sulfenamide-based, thiazole-based, thiuram-based, thiourea-based, or guanidine-based vulcanization accelerator.

The sulfenamide-based vulcanization accelerator is N-cyclohexyl-2-benzothiazylsulfenamide (CBS), N-tert-butyl-2-benzothiazylsulfenamide (TBBS), N,N-dicyclohexyl-2- benzothiazylsulfenamide, N-oxydiethylene-2-benzothiazylsulfenamide, N,N-diisopropyl-2-benzothiazolesulfenamide and the like.

The thiazole-based vulcanization accelerator is 2-mercaptobenzothiazole (MBT), dibenzothiazyl disulfide (MBTS), sodium salt of 2-mercaptobenzothiazole, zinc salt of 2-mercaptobenzothiazole, 2- Copper salt of mercaptobenzothiazole, cyclohexylamine salt of 2-mercaptobenzothiazole, 2-(2,4-dinitrophenyl)mercaptobenzothiazole, 2-(2,6-diethyl 4- morpholinothio)benzothiazole and the like.

The thiuram-based vulcanization accelerator is tetramethylthiuram disulfide (TMTD), tetraethylthiuram disulfide, tetramethylthiuram monosulfide, dipentamethylenethiuram disulfide, dipentamethylenethiuram monosulfide, dipentamethylenethiuram tetra sulfide, dipentamethylenethiuram hexasulfide, tetrabutylthiuram disulfide, pentamethylenethiuram tetrasulfide and the like.

The thiourea-based vulcanization accelerator may be thiacarbamide, diethylthiourea, dibutylthiourea, trimethylthiourea, diortotolylthiourea, and the like.

The guanidine-based vulcanization accelerator may be diphenylguanidine, diortotolylguanidine, triphenylguanidine, orthotolylbiguanide, or diphenylguanidine phthalate.

In some cases, an antioxidant may be added to the mixer, and the antioxidant may be any one selected from a hydroquinone-based compound, a phenol-based compound, a tocopherol-based compound, and an amine-based compound.

The hydroquinone-based compound may be t-butyl hydroquinone, di-t-butylhydroquinone, t-butylhydroanisole, or the like.

The phenolic compound is 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate, 2-[1-(2-hydroxy-3, 5-di-t-pentylphenyl)ethyl]-4,6-di-t-pentylphenyl acrylate, 1,6-hexanediolbis-[3-(3,5-di-t-butyl-4-hydride hydroxyphenyl)propionate], 2,2-thiodiethylenebis-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], 3,5-di-t- Butyl-4-hydroxybenzylphosphonate diethyl ester, tris(2,6-dimethyl-3-hydroxy-4-t-butylbenzyl) isocyanurate, tris(3,5-di-t-bunyl -4-hydroxybenzyl) isocyanurate, tris [(3,5-di-t-butyl-4-hydroxyphenyl) propionyloxyethyl] isocyanurate and the like.

The amine compound is N,N'-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine, N,N'-bis(1-methylheptyl)-p-phenylenediamine, N,N '-Dicyclohexyl-p-phenylenediamine, N,N'-bis(2-naphthyl)-p-phenylenediamine, N-isopropyl-N'-phenyl-p-phenylenediamine, N-( 1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, N-(1-methylheptyl)-N'-phenyl-p-phenylenediamine, 1,2-bis[(2-methylphenyl) Amino]ethane, 1,2-bis(phenyl-amino)propane, (o-tolyl)biguanide, bis[4-(1',3'-dimethylbutyl)phenyl]amine, tert-octylated N- phenyl-1-naphthylamine and the like.

Next, the prepared thermoplastic cross-linked product is pelletized and molded into a predetermined shape (step c).

The present invention provides a rubber composition comprising the thermoplastic crosslinked product.

In some cases, the rubber composition may further include a reinforcing material.

The reinforcing material is carbon black, silica, calcium carbonate, clay, aluminum hydroxide, lignin, silicate, talc, syndiotactic-1,2-polybutadiene, titanium oxide, clay, layered silicate, tungsten, talc, mica, vermiculite, hydro It may be de-site and the like.

The present invention provides an industrial part comprising the rubber composition.

The industrial parts may be any one selected from automobile parts, space/aviation parts, and electronic parts.

The industrial parts may be anti-vibration rubber, hoses, seal parts, and the like.

The anti-vibration rubber includes an engine mount, a bumper stopper of a chassis, dampers, suspension supports, and the like.

The hose includes an engine fuel hose, an air hose, a cooling system hose, a chassis fuel hose, a brake hose, an oil cooler hose, and the like.

The seal parts include oil seals, O-rings, gaskets, and the like.

Hereinafter, preferred embodiments are presented to aid understanding of the present invention, but the following examples are merely illustrative of the present invention, and various changes and modifications are possible within the scope and spirit of the present invention. It is obvious to those skilled in the art, It goes without saying that these variations and modifications fall within the scope of the appended claims.

[Example]

Example 1: Thermoplastic cross-linked product of FVMQ/PP

Fluorosilicone rubber (FVMQ, fluorovinylmethylsiloxane rubber) (Mw = 10,000 to 80,000 g/mol) and polypropylene (PP) were prepared at a weight ratio of 60:40, and a dynamic crosslinking reaction was induced using an internal mixer. Specifically, PP was first put into an internal mixer under conditions of 175 ° C and 60 rpm and stirred for 4 minutes, then fluorosilicone rubber was added and stirred for 2 minutes, then stearic acid and zinc oxide (ZnO) as vulcanization accelerators were added. , Zinc oxide), vulcanization accelerators MBTS (2,2'-Dithiobis (benzothiazole)) and TMTD (Tetramethylthiuram disulfide), and sulfur were added to induce a dynamic crosslinking reaction. After 8 minutes, mixing was terminated to form a thermoplastic crosslinked product. manufactured.

The prepared FVMQ/PP thermoplastic cross-linked material was subjected to a molding process according to necessary experiments to prepare samples.

Comparative Example 1: Thermoplastic crosslinked product of EPDM/PP

EPDM+PP TPV Santoprene 101-64 (Exxon Mobil), a thermoplastic cross-linked product of FVMQ/PP prepared by dynamic cross-linking, was prepared and its physical properties were compared with those of Example 1.

[Experimental Example]

Measurement of physical properties of thermoplastic crosslinked products

(1) hardness

The hardness (Shore D) values of 5 points of the thermoplastic crosslinked material (TPV) samples were measured using a Durometer specified by ASTM D2240, and the average was obtained.

(2) Tensile strength and elongation at break

A sample (dog-bone sample, thickness of about 2 mm) corresponding to the standard was produced and the tensile strength and elongation at break were measured under the condition of a crosshead speed of 500 mm/min. This experiment was performed according to ISO37 regulations using a Universal Testing Machine (UTM).

(3) Compression set

According to ISO 815, a sample with a thickness of about 12.5 mm that meets the standard was prepared, and the experiment was performed in an oven at 70 ° C in a state of 25% compression. The compression set was calculated as In Equation 1 below, H ₀ = sample thickness before compression, H ₁ = sample thickness during compression, and H ₂ = sample thickness after compression.

[Equation 1]

(4) Oil resistance

Using the same dog-bone sample used for tensile strength measurement, immersed in ASTM # 3 oil, maintained at 150 ° C. for 72 hours, and then taken out and measured for volume change before and after immersion to measure oil resistance.

(5) High temperature characteristics

Changes in tensile strength values were observed under the condition of 150°C.

The measurement results of the physical properties of the thermoplastic crosslinked product of Example 1 and the thermoplastic crosslinked product of Comparative Example 1 measured according to the above method are summarized in Table 1 below.

embodiment
(Hardness 40 D) Hardness
(shore D) tensile strength
(ISO 37) Elongation at break
(ISO 37) permanent compression set
(ISO 815, @ 70℃) oil resistance
(volume change,
ASTM #3 oil) high temperature properties
(change in tensile strength,
@ 150℃ Comparative Example 1 40 20.7 MPa 610% 32% 52% - 11% Example 1 40 20.1 MPa 620% 14% 30% - 9%

According to this, the thermoplastic cross-linked product of FVMQ/PP prepared according to Example 1 of the present invention has elongation at break, compression set, oil resistance, and high-temperature characteristics compared to the EPDM + PP thermoplastic cross-linked product (TPV) Santoprene of Comparative Example 1. TPSiV ^® 4200-70A and TPSiV ^® 4200-75A SR, which are thermoplastic cross-linked products in which vulcanized silicone modules are integrated into DuPont's thermoplastic matrix Looking at the oil resistance in the data provided by the manufacturer, TPSiV ^® 4200-70A showed a 75% volume change and ^TPSiV 4200-75A SR 70% volume change in an oil resistance test conducted under the conditions of 70°C and 24 hours according to ISO 815 can be confirmed to occur. That is, it can be confirmed that the thermoplastic crosslinked product of the present invention has significantly improved oil resistance compared to the conventional thermoplastic crosslinked product.

Although the embodiments of the present invention have been described above, those skilled in the art can add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. The present invention can be variously modified and changed by the like, and this will also be said to be included within the scope of the present invention.

Claims (17)

A thermoplastic crosslinked product in which a fluorosilicone rubber represented by the following Structural Formula 1 and a thermoplastic polymer are dynamically crosslinked;
[Structural Formula 1]

In structural formula 1,
R ¹ is a C1 to C10 alkyl group;
R ² is a C2 to C10 alkenyl group;
R ³ and R ⁴ are each independently a C1 to C10 alkyl group;
R ⁵ is a C1 to C10 alkyl group;
L ¹ is a C1 to C10 alkylene group, or

ego,
m is the number of repeating units, which is an integer from 1 to 10;
R ⁶ to R ⁸ are each independently a C1 to C10 alkyl group or a fluoro group, and at least one of R ⁶ to R ⁸ is a fluoro group;
p, q and r are the number of repeating units. According to claim 1,
In Structural Formula 1,
R ¹ is a C1 to C7 alkyl group;
R ² is a C2 to C7 alkenyl group;
R ³ and R ⁴ are each independently a C1 to C7 alkyl group;
R ⁵ is a C1 to C7 alkyl group;
L ¹ is a C1 to C7 alkylene group, or

ego,
m is the number of repeating units, which is an integer from 1 to 4;
R ⁶ to R ⁸ are a fluoro group;
A thermoplastic crosslinked product, characterized in that p, q and r are the number of repeating units. According to claim 2,
The fluorosilicone rubber represented by structural formula 1 is a thermoplastic crosslinked product, characterized in that FVMQ (fluorovinylmethylsiloxane rubber). According to claim 3,
The FVMQ (fluorovinylmethylsiloxane rubber) has a weight average molecular weight (Mw) of 5,000 to 250,000 g / mol, characterized in that the thermoplastic crosslinked product. According to claim 1,
The thermoplastic polymer is polypropylene, polyethylene, polyamide, polyphenylene sulfide, polyphosphoric acid, polyphthalamide, polyetheretherketone ( polyether ether ketone), polyetherimide. and at least one selected from polysulfone and polyethersulfone. According to claim 1,
The thermoplastic crosslinked material is a thermoplastic crosslinked material, characterized in that the fluorosilicone rubber represented by structural formula 1 and the thermoplastic polymer are blended in a weight ratio of 25:75 to 75:25 and dynamically crosslinked. (a) mixing a fluorosilicone rubber represented by Structural Formula 1 and a thermoplastic resin by introducing them into a mixer; and
(b) inducing a dynamic crosslinking reaction by adding a vulcanization accelerator, a vulcanization accelerator, and sulfur to the mixer;
[Structural Formula 1]

In structural formula 1,
R ¹ is a C1 to C10 alkyl group;
R ² is a C2 to C10 alkenyl group;
R ³ and R ⁴ are each independently a C1 to C10 alkyl group;
R ⁵ is a C1 to C10 alkyl group;
L ¹ is a C1 to C10 alkylene group;
R ⁶ to R ⁸ are each independently a C1 to C10 alkyl group or a fluoro group, and at least one of R ⁶ to R ⁸ is a fluoro group;
p, q and r are the number of repeating units. According to claim 7,
The method for producing a soft plastic crosslinked product, characterized in that the mixer maintains a temperature condition of 150 to 200 ° C. According to claim 7,
The method for producing a thermoplastic crosslinked product, characterized in that the vulcanization accelerator is at least one selected from zinc oxide (ZnO) and stearic acid. According to claim 7,
The method for producing a thermoplastic crosslinked product, characterized in that the vulcanization accelerator is any one selected from sulfenamide-based, thiazole-based, thiuram-based, thiourea-based, and guanidine-based vulcanization accelerators. According to claim 7,
A method for producing a thermoplastic crosslinked product, characterized in that in step (b), an antioxidant is additionally added to the mixer. According to claim 7,
After step (b),
(c) pelletizing the prepared thermoplastic crosslinked material and molding it into a predetermined shape; A rubber composition comprising any one of thermoplastic cross-linked products selected from claims 1 to 6. According to claim 13,
The rubber composition, characterized in that it further comprises a reinforcing material. According to claim 14,
The reinforcing material is carbon black, silica, calcium carbonate, clay, aluminum hydroxide, lignin, silicate, talc, syndiotactic-1,2-polybutadiene, titanium oxide, clay, layered silicate, tungsten, talc, mica, vermiculite and hydro A rubber composition characterized in that it is at least one selected from talcite. An industrial component comprising the rubber composition of claim 13 . According to claim 16,
The industrial part is an industrial part, characterized in that any one selected from automotive parts, space / aviation parts and electronic parts.