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Foamed elastic cushion block for high-speed rail and preparation method thereof

An elastic pad, high-speed rail technology, applied in the field of high-speed rail shock absorption, can solve the problems of low strength, high dynamic rate, low strength, etc., and achieve the effects of low dynamic rate, good shock absorption durability, and excellent heat and weather resistance.

Inactive Publication Date: 2012-07-25
ANHUI ZHONGDING SEALING PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, such products have been mainly imported, and are usually made of PU foam; however, the strength of PU foam pads is low, and there is a risk of hydrolysis; the current EPDM foamed elastic pads , although it is more environmentally friendly than PU, but its strength is not high, and the dynamic ratio is too large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 of the present invention proposes a kind of foaming elastic block for high-speed rail, comprises the following components by weight ratio:

[0044] EPDM, 80 copies;

[0045] Carbon black, 40 parts;

[0046] White carbon black, 10 parts;

[0047] Stearic acid, 1 part;

[0048] Zinc oxide, 3 parts;

[0049] Coupling agent Si69, 5 parts;

[0050] Paraffin oil, 10 parts;

[0051] Antiaging agent RD, 1.0 part;

[0052] Sulfur, 0.5 parts;

[0053] Accelerator TMTD, 0.5 parts;

[0054] Accelerator DPTT, 0.5 part;

[0055] Accelerator DM, 1.0 part;

[0056] Accelerator EZ, 0.5 part;

[0057] Foaming agent OBHS, 2 parts.

Embodiment 2

[0059] Embodiment 2 of the present invention proposes a kind of foaming elastic block for high-speed rail, comprises the following components by weight ratio:

[0060] EPDM, 100 copies;

[0061] Carbon black, 55 parts;

[0062] White carbon black, 20 parts;

[0063] Stearic acid, 2 parts;

[0064] Zinc oxide, 5 parts;

[0065] Coupling agent Si69, 6 parts;

[0066] Paraffin oil, 20 parts;

[0067] Antiaging agent RD, 2.0 parts;

[0068] Sulfur, 1.0 parts;

[0069] Accelerator TMTD, 0.5 part;

[0070] Accelerator DPTT, 0.5 part;

[0071] Accelerator DM, 1.5 parts;

[0072] Accelerator EZ, 0.5 parts;

[0073] Foaming agent OBHS, 3 parts.

Embodiment 3

[0075] Embodiment 3 of the present invention proposes a kind of foaming elastic block for high-speed rail, comprises the following components by weight ratio:

[0076] EPDM, 120 copies;

[0077] Carbon black, 70 parts;

[0078] White carbon black, 30 parts;

[0079] Stearic acid, 3 parts;

[0080] Zinc oxide, 8 parts;

[0081] Coupling agent Si69, 8 parts;

[0082] Paraffin oil, 30 parts;

[0083] Antiaging agent RD, 2.0 parts;

[0084] Sulfur, 1.5 parts;

[0085] Accelerator TMTD, 1.5 parts;

[0086] Accelerator DPTT, 1.5 parts;

[0087] Accelerator DM, 0.5 parts;

[0088] Accelerator EZ, 1.5 parts;

[0089] Foaming agent OBHS, 4 parts.

[0090] The present invention proposes a high-strength, low-magnification foamed elastic block for high-speed rail. The strength of the foamed elastic block can reach more than 4MPa, and the dynamic magnification is less than 1.35. It has high strength, low dynamic magnification, and It has excellent heat and weather resistance an...

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Abstract

The invention discloses a foamed elastic cushion block for a high-speed rail. The foamed elastic cushion block comprises the following components in parts by weight: 80-120 parts of EPDM (Ethylene-Propylene-Diene Monomer), 40-70 parts of carbon black, 10-30 parts of white carbon black, 1-3 parts of stearic acid, 3-7 parts of zinc oxide, 4-8 parts of coupling agent Si69, 10-30 parts of paraffin hydrocarbon oil, 1.0-2.0 parts of anti-aging agent RD, 0.5-1.5 parts of sulfur, 0.5-1.5 parts of accelerator TMTD (Tetramethyl Thiuram Disulfide), 0.5-1.5 parts of accelerator DPTT (Dipentamethylene Thiuram Tetrasulfide), 0.5-1.5 parts of accelerator DM (2,2'-dibenzothiazyl disulfide), 0.5-1.5 parts of accelerator EZ (Zinc Diethyldithiocarbamate) and 2-4 parts of foaming agent OBHS (4,4'-Oxybis(benzene sulfonyl hydrazide)). The strength of the foamed elastic cushion block can reach over 4 MPa, the dynamic multiplying power is less than 1.35; and the foamed elastic cushion block has the advantages of high strength, low dynamic multiplying power, superior heat resistance and weather resistance and good insulation performance, so that good vibration absorption and endurance performance are guaranteed.

Description

technical field [0001] The invention relates to the field of high-speed rail shock absorption, in particular to a high-strength, low-dynamic-magnification foamed elastic pad for high-speed rail and a preparation method thereof. Background technique [0002] With the vigorous development of national railway construction, the construction speed of high-speed railway is also getting faster and faster. Among them, the performance requirements of the elastic pads used for shock absorption under the high-speed railway track are also constantly improving. In the prior art, such products have been mainly imported and are usually made of PU foam; however, the strength of PU foam pads is low and there is a risk of hydrolysis; the current EPDM foamed elastic pads , although it is more environmentally friendly than PU, its strength is not high, and its dynamic magnification is too large. Contents of the invention [0003] Aiming at the problems existing in the prior art, the object o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/36C08K5/09C08K3/22C08K5/01B29C35/02E01B9/68
Inventor 夏迎松陈磊朱宝宁章维国李爱民俞晨曦
Owner ANHUI ZHONGDING SEALING PARTS
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