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Low-hysteresis rubber composition for journal box rubber springs and preparation method of low-hysteresis rubber composition

The technology of rubber spring and hysteresis glue is applied in the field of low hysteresis rubber compound composition for axle box rubber spring and its preparation field. Low structure and the effect of reducing hysteresis

Active Publication Date: 2016-06-22
CRRC QINGDAO SIFANG ROLLING STOCK RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary furnace carbon black has small particle size and large structure, and when added to rubber, it will form unstable physical cross-linking, resulting in "pany effect" and increasing the hysteresis performance of the rubber compound.

Method used

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  • Low-hysteresis rubber composition for journal box rubber springs and preparation method of low-hysteresis rubber composition
  • Low-hysteresis rubber composition for journal box rubber springs and preparation method of low-hysteresis rubber composition
  • Low-hysteresis rubber composition for journal box rubber springs and preparation method of low-hysteresis rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A low-hysteresis compound for an axle box rubber spring, the composition of its main raw materials and the ratio of parts by mass are: 100 parts of deproteinized natural rubber (DPNR); 80 parts of medium particle thermal black N99080 parts; 3 parts of anti-aging agent RD; anti-aging agent 1.5 parts of BLE; 5 parts of zinc oxide; 2 parts of stearic acid; 2.5 parts of sulfur; 1.5 parts of accelerator CBS; 1.5 parts of accelerator NOBS.

[0034] Among them, the particle size of medium particle thermal carbon black is 280nm, the specific surface area of ​​CTAB method is 9m2 / g, and the oil absorption value of DBP is 0.40cm3 / g.

[0035] The rubber material for traditional axle box rubber springs, its main raw material composition and mass ratio are: 100 parts of natural rubber; 35 parts of carbon black N55035 parts; 3-5 parts of aromatic oil; 6-10 parts of anti-aging agent RD; 3-5 parts of anti-aging agent BLE; 3-10 parts of zinc oxide; 1-5 parts of stearic acid; 1-10 parts o...

Embodiment 2

[0050] A low-hysteresis rubber compound for axle box rubber springs, the composition and mass ratio of its main raw materials are: 100 parts of deproteinized natural rubber (DPNR); 60 parts of medium-sized thermal cracking carbon black; 2 parts of anti-aging agent RD; 1 part of anti-aging agent BLE ; 3 parts of zinc oxide; 1.2 parts of stearic acid; 1 part of sulfur; 2.3 parts of accelerator CBS; 2.3 parts of accelerator NOBS.

[0051] Among them, the particle size of medium particle thermal carbon black is 280nm, and the specific surface area of ​​CTAB method is 9m 2 / g, DBP oil absorption value is 0.40cm 3 / g.

[0052] The preparation method is as described in Example 1

[0053] Traditional axle box rubber spring compound, its main raw material composition and mass ratio are: 100 parts of natural rubber; 27 parts of carbon black N550; 3-5 parts of aromatic oil; 6-10 parts of anti-aging agent RD; 3-10 parts of zinc; 1-5 parts of stearic acid; 1-10 parts of sulfur; 0.5-3 pa...

Embodiment 3

[0061] A low-hysteresis rubber compound for axle box rubber springs, the main raw material composition and mass ratio are: 100 parts of deproteinized natural rubber (DPNR); 100 parts of medium particle thermal black; 4 parts of anti-aging agent RD; 2 parts of anti-aging agent BLE 10 parts of zinc oxide; 4 parts of stearic acid; 5 parts of sulfur; 0.5 parts of accelerator CBS; 0.5 parts of accelerator NOBS.

[0062] The preparation method is as described in Example 1

[0063] Traditional axle box rubber spring compound, its main raw material composition and mass ratio are: 100 parts of natural rubber; 45 parts of carbon black N550; 3-5 parts of aromatic oil; 6-10 parts of antioxidant RD; 3-5 parts of antioxidant BLE; 3-10 parts of zinc; 1-5 parts of stearic acid; 1-10 parts of sulfur; 0.5-3 parts of accelerator TMTD; 1-4.5 parts of accelerator NOBS.

[0064] The basic properties of the rubber material of the present invention and the traditional rubber material are compared as...

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Abstract

The invention relates to journal box rubber, in particular to a low-hysteresis rubber composition for journal box rubber springs and a preparation method of the low-hysteresis rubber composition. The rubber composition comprises, by weight, 100 parts of deproteinized natural rubber (DPNR), 60-100 parts of intermediate-particle heat cracked carbon black N990, 3-6 parts of antiager, 4.2-14 parts of activator, 1-5 parts of sulfur and 1-4.6 parts of accelerant. According to the formula, high-purity DPNR is taken as raw rubber, and the intermediate-particle heat cracked carbon black N990 with large particle size, low structure degree and high purity is taken as a reinforcing filler; thus, on the basis of the reasonable optimized matching, hysteresis property of the rubber composition and product is reduced effectively on the premise of maintaining property of the rubber composition for making the journal box rubber springs.

Description

technical field [0001] The invention relates to an axle box rubber spring, in particular to a low-hysteresis compound composition for an axle box rubber spring and a preparation method thereof. Background technique [0002] Axlebox springs are the main axlebox positioning method adopted by urban rail transit vehicles in my country. The axlebox springs are respectively installed between the axlebox and the frame. Each axlebox has two conical laminated rubber springs, which are respectively installed on both sides of the axlebox. . Axlebox rubber springs (also known as "primary springs") are important components on subway vehicle bogies, used to damp vibration and guide wheelsets safely and reliably. This structure provides flexible support and positioning for the bogie frame, and transmits the lateral, longitudinal and vertical forces from the wheel set to the bogie frame, so that the axle box can achieve no gap and no wear in the three directions elastic positioning. Since...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/02C08K3/04C08K3/22C08K3/06C08K5/09
CPCC08K3/04C08K3/06C08K3/22C08K5/09C08K13/02C08K2003/2296C08K2201/003C08K2201/006C08L7/00
Inventor 张波高新文王付胜
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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