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Rubber composition and shockproof rubber and shockproof fittings

A rubber composition, rubber technology, applied in the fields of rubber composition, anti-vibration rubber and anti-vibration accessories

Inactive Publication Date: 2003-07-09
株式会社引能仕材料
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 2 The problem cannot be solved with conventional fitting techniques as shown

Method used

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  • Rubber composition and shockproof rubber and shockproof fittings
  • Rubber composition and shockproof rubber and shockproof fittings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11 and comparative example 1～6

[0117] (1) Preparation of rubber composition and manufacture of anti-vibration rubber

[0118] In order to prepare the rubber composition, the styrene-butadiene copolymer rubber (A) and the diene rubber (B) shown in Table 1 were used. Among the components (B) in Table 1, styrene-butadiene copolymer rubber is used other than natural rubber. SL574 is a tin-modified styrene-butadiene copolymer rubber manufactured by JSR Corp. In addition, #1502 is a styrene-butadiene copolymer rubber manufactured by JSR Corp.

[0119] mw

(×10 4 )

Tg(°C)

vinyl content

(%)

Conjugated styrene

ene content

(mol%)

Hydrogenation rate

(%)

ingredient (A)

A-1

1

-5

56

56

0

A-2

5

-16

54

48

85

A-3

10

-40

60

22

0

A-4

0.12

-14

25

...

Embodiment 1

[0134] Example 1: 24 (-40, -16), Example 2: 24 (-40, -16), Example 3: 48 (-53, -5), Example 4: 46 (-51, -5 ), Example 5: 58 (-63, -5), Example 6: 58 (-63, -5), Example 7: 17 (-33, -16), Example 8: 26 (-40, -14), Example 9: 13 (-27, -14), Example 10: 11 (-27, -16), Comparative Example 1: 23 (-63, -40), Comparative Example 5: 4 (- 18, -14).

[0135] Example

1

2

3

4

5

6

ingredient (A)

A-1

20

25

20

20

A-2

25

25

A-3

A-4

A-5

ingredient (B)

SBR-1

55

55

SL574

50

55

SBR-2

50

50

#1502

natural rubber

20

20

30

20

30

30

SBR-3

SBR-4

SBR-5

...

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Abstract

The present invention provides a rubber composition that provides excellent vibration-isolating properties, a vibration isolating rubber formed from the rubber composition and a vibration-isolating mount. The rubber composition contains 5 to 40 parts by weight of a styrene-butadiene-based copolymer rubber, having a weight-average molecular weight of 200,000 or less and a glass transition temperature of -35 DEG C. or higher; and 95 to 60 parts by weight of a diolefin-based rubber, having a weight-average molecular weight exceeding 200,000 and a glass transition temperature of -20 DEG C. or lower; where the weight are based on 100 parts by weight of the total amount of both. A vibration-isolating rubber comprising this composition has a performance relationship between a dynamic-to-static modulus ration (Kd / Ks), which is a ratio of a dynamic spring constant (Kd) to a static spring constant (Ks), and a loss factor (tan delta), as shown by the equation (1): Kd / Ks<=20 tan delta-1.8 (1). This vibration-isolating rubber is used for a vibration-isolating mount.

Description

technical field [0001] The present invention relates to rubber composition, anti-vibration rubber and accessories for anti-vibration. More specifically, it relates to an anti-vibration rubber having excellent anti-vibration properties, a rubber composition capable of providing the rubber, and an anti-vibration accessory using the anti-vibration rubber. Background technique [0002] Anti-vibration rubbers require a small dynamic / static modulus ratio and a large loss factor, but anti-vibration rubbers sufficiently satisfying such requirements cannot be obtained. Therefore, it is well known that liquid-enclosed anti-vibration rubber parts are used in the automotive industry and the like. This type of liquid-enclosed anti-vibration rubber part has a complicated structure, and the anti-vibration effect is only shown in one direction, and the price is very expensive. Therefore, the development of anti-vibration rubber that does not contain liquid is required. Anti-vibration rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L19/00C08L21/00
CPCC08L7/00C08L9/00C08L9/06C08L19/006C08L21/00C08L2666/08
Inventor 小林直一但木稔弘突廻惠介
Owner 株式会社引能仕材料
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