KR20160080843A - A RUBBER COMPOSITE FOR Low Density FKM RUBBER - Google Patents

A RUBBER COMPOSITE FOR Low Density FKM RUBBER Download PDF

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Publication number
KR20160080843A
KR20160080843A KR1020140192505A KR20140192505A KR20160080843A KR 20160080843 A KR20160080843 A KR 20160080843A KR 1020140192505 A KR1020140192505 A KR 1020140192505A KR 20140192505 A KR20140192505 A KR 20140192505A KR 20160080843 A KR20160080843 A KR 20160080843A
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KR
South Korea
Prior art keywords
rubber
parts
weight
polymer
specific gravity
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Application number
KR1020140192505A
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Korean (ko)
Inventor
허병기
최우혁
Original Assignee
평화오일씰공업주식회사
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Priority to KR1020140192505A priority Critical patent/KR20160080843A/en
Publication of KR20160080843A publication Critical patent/KR20160080843A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic
    • C08K7/26—Silicon- containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L15/00—Compositions of rubber derivatives
    • C08L15/02—Rubber derivatives containing halogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Disclosed in the present invention is a rubber composition of low-specific-gravity fluorine rubber. The rubber composition of low-specific-gravity fluorine rubber of the present invention comprises: a polymer consisting of fluorine rubber (FKM); and filler consisting of hollow-type soda-lime borosilicate, having 15-30 parts by weight with respect to 100 parts by weight of the polymer.

Description

TECHNICAL FIELD [0001] The present invention relates to a rubber composition for a low specific gravity fluororubber,

The present invention relates to a fluororubber rubber composition, and more particularly, to a rubber composition of an oil seal composed of fluororubber which can be used in various fields to which rubber having durability, heat resistance and chemical resistance is applied in vehicles, electronic products and the like .

Fluorocarbon rubber (FKM) is a rubber not only having heat resistance but also excellent in oil resistance and chemical resistance. Therefore, it is used not only as a sealing material for commonly used automobile engines but also for special purpose roads such as defense weapons, industrial machinery, and satellites. HF magnetics in fluororubber have relatively high binding energy. As the fluorine content in the rubber increases due to such physical properties, the heat resistance and the chemical resistance are also improved.

These characteristics can be used for a long time even in harsh environments. Due to these characteristics, even though the price is high, its use as real-life products as well as automobile parts is expanding due to its stability and high functionality. Accordingly, the real-life field requiring long-term functionality has been expanded. As a result, rubber materials are also required to be lightweight and durable in accordance with the trend. Development of functional rubber materials is urgently required according to the needs of such customers

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a rubber composition of a low specific gravity fluororubber having excellent properties such as heat resistance, chemical resistance, tensile strength and hardness, and small specific gravity.

 Accordingly, the rubber composition of a low specific gravity fluororubber according to a preferred embodiment of the present invention comprises a polymer composed of fluoro rubber (FKM) and 15 to 30 parts by weight of the polymer in 100 parts by weight of the polymer, and hollow spherical sodalime borosilicate Based filler.

It is preferable that the filler does not contain carbon black.

The crosslinking agent may be a peroxide type crosslinking agent. In this case, the crosslinking agent may be triallyl isocyanurate having 1 to 3 parts by weight with respect to 100 parts by weight of the polymer, and 2,5-dimethyl-1,3-propanediol having 2 to 3 parts by weight with respect to 100 parts by weight of the polymer. 2,5-di (t-butylperoxy) hexane).

According to the present invention having the above-described constitution, weight reduction can be achieved by using hollow hollow soda lime borosilicate glass as a filler.

In addition, since soda lime borosilicate glass is used as a filler and carbon black is not used, a white rubber can be produced, and accordingly, a rubber having various colors can be produced in accordance with the pigment.

Hereinafter, a preferred embodiment of the rubber composition for a low specific gravity fluorine rubber of the present invention will be described in detail.

 Fluorocarbon rubber is a high hydrocarbon polymer with high fluorination degree. The fluororubber has excellent oxidation resistance, weather resistance, flame retardancy, chemical resistance, and oil resistance. The present invention can be a ternary fluoropolymer having excellent heat resistance, chemical resistance, and peroxide cross-linking.

The filler is intended to improve the adhesiveness of the polymer while improving workability and reinforcement. According to the present invention, hollow spherical sodalime borosilicate glass is used as a filler.

Soda lime borosilicate glass is resistant to moisture and chemically very stable. Also, the weight is lighter than conventional carbon black. Particularly, since the rubber has a hollow shape, the weight of the entire rubber can be reduced, and the surface area of the spherical shape can be lowered to improve the filling rate, thereby enabling addition of a small amount.

In this case, the filler may include 15 to 30 parts by weight based on 100 parts by weight of the polymer. When the amount of the filler is less than 15 parts by weight, workability and reinforcement are not good. When the amount of the filler is more than 30 parts by weight, basic properties of the rubber deteriorate.

According to the present invention, carbon black may not be used as a filler. It is possible to achieve appropriate strength, heat resistance, chemical resistance and lightness without using carbon black.

In addition, by using soda lime borosilicate glass as a filler and not filling carbon black, the color of the rubber can be made white so that it can fill the pigment and produce various colors.

An example of the pigment may be an inorganic pigment containing a metal compound as a main component. The pigment is mixed with a rubber synthetic resin and is used for coloring the rubber synthetic resin. The pigment may be used in an amount of 1 to 3 parts by weight relative to 100 parts by weight of the polymer. An inorganic pigment containing a metal compound as a main component is produced by using a metal compound such as zinc, titanium, lead, iron, copper, or chromium as a raw material and usually has a function of coloring the rubber. The inorganic pigment can improve the mechanical abrasion resistance of the rubber itself together with the function of coloring.

The crosslinking agent is for increasing the crosslinking speed of the polymer while preventing the side chain reaction to increase the crosslinking density. According to this embodiment, as a crosslinking agent, it may be a peroxide crosslinking agent. In this case, the crosslinking agent may be triallyl isocyanurate having 1 to 3 parts by weight with respect to 100 parts by weight of the polymer, and 2,5-dimethyl-1,3-propanediol having 2 to 3 parts by weight with respect to 100 parts by weight of the polymer. 2,5-di (t-butylperoxy) hexane).

Hereinafter, the rubber composition according to an embodiment of the present invention (hereinafter referred to as " pulpelt ") is referred to as a rubber composition of a conventional fluororubber (hereinafter referred to as "cursing" for convenience) The above effects will be more clearly explained by comparing them.

Table 1 shows the comparison between the constituent components of Examples and Comparative Examples applied to the various tests.

In the case of the examples, soda lime borosilicate glass was used instead of carbon black as the filler.

Components (parts by weight) Comparative Example Example Polymer GF600S 1 ) - 100 P959 30M 2 ) 100 - Filler TiO 2 3 ) 5 - Nyad # 400 4) 10 - Zeosil 155 5) 10 - Glass Bubble 6 ) - 20 Cross-linking agent TAIC M60 7 ) 2 2 DBPH50 8 ) 2.4 2.4 ZnO 9 ) 5 - Processing aid HT-290 10) 0.5 0.5 WS 280 11) 0.5 0.5 1) GF600S: FKM, Dupont
2) P959 / 30M: FKM, Solvay
3) TiO 2 : - (C) n - , Cancarb
4) Nyad # 400: CaO.SiO2, NYCO
5) Zeosil 155: SiO 2 .Na 2 CO 3 , Rhodia Silica
6) Glass Bubble: soda-lime borosiicate glass, 3M
7) TAIC M60: Triallyisocyanurate, KaO Corp.
8) DBPH50: 2,5-Dimethyl-2,5di (t-butylperoxy) hexane, RT Vanderbilt
9) ZnO KS-2: ZnO, sambo zinc
10) HT-290: Blend of fatty acid derivatives and waxes, Struktol
11) WS280: Fatty acid derivative + Silicon concentrate, Schill + Seilacher

Table 2 shows comparative results of mechanical properties test results of Examples and Comparative Examples.

In this case, the hardness test, tensile strength, elongation and specific gravity tests satisfied the specifications of KS M 6518, respectively.

As a result, the hardness of the example was 81 Shore A, which was similar to the comparative 79 Shore A, and the tensile strength at the implementation was 51 Kgf / cm 2 , 48 and 64 Kgf / cm 2 And the elongation of the example was also 292%.

In addition, it can be seen that the specific gravity of the embodiment is 1491, which is smaller than 2067 of the comparative example.

As described above, in the case of the examples, the mechanical properties are at the same level as the comparative example, and the weight is lighter than the comparative example.

Item Comparative Example Example Related Standards Mechanical properties Hardness (Shore A) 79 80 81 KS M 6518 100% Mo. 48 64 51 The tensile strength
(Kgf / cm 2 ) 159 189 71 Elongation (%) 357 268 290 importance 2.067 2.149 1.491

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

Claims (5)

A polymer composed of fluorine rubber (FKM); And
A filler consisting of hollow soda lime borosilicate having 15 to 30 parts by weight based on 100 parts by weight of the polymer;
Wherein the low specific gravity fluorine rubber composition comprises a low specific gravity fluorine rubber. The method according to claim 1,
Wherein the filler does not contain carbon black. The method according to claim 1,
Wherein the crosslinking agent is a peroxide type crosslinking agent. The method of claim 3,
The crosslinking agent is:
Triallyl isocyanurate having 1 to 3 parts by weight based on 100 parts by weight of the polymer;
2,5-dimethyl-2,5di (t-butylperoxy) hexane having 2 to 3 parts by weight based on 100 parts by weight of the polymer;
Wherein the low specific gravity fluororubber composition comprises a low specific gravity fluororubber rubber composition. 5. The method according to any one of claims 1 to 4,
Wherein the polymer is a ternary fluoropolymer.
KR1020140192505A 2014-12-29 2014-12-29 A RUBBER COMPOSITE FOR Low Density FKM RUBBER KR20160080843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140192505A KR20160080843A (en) 2014-12-29 2014-12-29 A RUBBER COMPOSITE FOR Low Density FKM RUBBER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140192505A KR20160080843A (en) 2014-12-29 2014-12-29 A RUBBER COMPOSITE FOR Low Density FKM RUBBER

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190080561A (en) 2017-12-28 2019-07-08 평화오일씰공업주식회사 Rubber composite of oil seal for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190080561A (en) 2017-12-28 2019-07-08 평화오일씰공업주식회사 Rubber composite of oil seal for vehicle

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