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Damping products made from foamed rubber, and production method

A technology of foamed rubber and production method, which is applied in the field of foamed rubber vibration damping products, and can solve the problems that have not yet been found.

Inactive Publication Date: 2006-04-19
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In further literature searches, no literature reports identical or similar to the subject of the present invention have been found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0024] Embodiment 1-3: compare the kind and consumption of filler.

[0025] According to the ratio of raw materials in Table 1, EPDM rubber, carbon black, calcium carbonate, paraffin oil, zinc oxide, stearic acid, vulcanization accelerator were added successively in the rubber internal mixer with a volume of 35 liters for mixing and processing for 10 Minutes, the temperature of the mixing room is controlled below 90°C, and finally foaming agent and sulfur are added and mixed for 2 minutes, and the material is discharged. It is thinly passed on the open mill for 3 times, and the sheet is discharged to obtain the mixed rubber material; After standing at room temperature for 24 hours, it was re-milled on an open mill to produce thick slices for later use.

[0026] Put the above-mentioned flake rubber into a square frame mold with a cavity size of 500×250×9mm. The volume of the rubber is equal to the volume of the mold cavity. Cover the upper and lower templates and place them on ...

Embodiment 4-6

[0030] Examples 4-6: Comparison of the effects of EPDM varieties on the dynamic and static stiffness ratio.

Embodiment 4

[0031] The formulation and properties of Examples 4-6 are shown in Table 1, and the mixing process and foaming process are the same as in Example 2. However, the foaming process conditions are slightly different. The primary vulcanization condition is 160°C×10min, and the secondary vulcanization condition is 160°C×15min. The test results show that the foamed rubber product with a small dynamic and static stiffness ratio can be prepared by selecting high molecular weight oil-extended EPDM rubber. Compared with Example 2, the dynamic and static stiffness ratio is significantly reduced. In Example 4, non-oil-extended and oil-extended EPDM rubbers are used together. On the one hand, the dynamic and static stiffness ratio is also very small. Ideal composition for vibration products.

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Abstract

A vibration damping foam rubber product with excellent vibration damping performance and antiageing nature is proportionally prepared from three-element ethylene propylene rubber, filler, softening agent, sulfurizing system and foaming system through pugging, sulfurizing at 140-180 deg.C for 5-10 min for primary sulfurizing-foaming to shape, and sulfurizing at 120-180 deg.C for 10-30 min for secondary sulfurizing-foaming to fixate its shape.

Description

technical field [0001] The invention relates to a product in the technical field of chemical industry and a production method thereof, in particular to a foam rubber damping product with low dynamic and static stiffness ratio and aging resistance and a production method thereof. Background technique [0002] Foam rubber, also known as sponge rubber, has a porous structure and is a composite material composed of rubber and gas. The rubber foam material is characterized by light weight, good elasticity, vibration reduction, sound insulation, heat insulation, wide range of physical properties adjustment, and high cost performance. It has been widely used in aviation, automobiles, instruments, meters, home appliances, packaging, and shoemaking. , sporting goods and other aspects. Due to its unique cell structure, foam rubber can be used as a shock absorber to obtain excellent vibration reduction effect. [0003] The dynamic and static stiffness ratio is one of the important in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08J9/00C08K5/42
Inventor 彭宗林钱振宇张隐西吴天翼高家伟
Owner SHANGHAI JIAO TONG UNIV
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