Damping rubber with low cost and high damping performance and manufacturing method thereof

The technology of damping rubber and damping agent is applied in the field of damping rubber with low cost and high damping and its preparation, which can solve the problems of high cost and high cost of small organic molecules, and achieve the effects of improving stability and wide effective damping temperature range.

Inactive Publication Date: 2015-09-02
CHENGDU POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although the modification of rubber with small organic molecules can significantly improve the damping performance, the damping modified organic small molecules currently available on the market are relatively expensive, and the cost is relatively high, which is difficult for medium, small and micro enterprises to accept.

Method used

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  • Damping rubber with low cost and high damping performance and manufacturing method thereof
  • Damping rubber with low cost and high damping performance and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1-4 and

[0055] Embodiment 1-4 and reference example 1-4

[0056] The damping rubbers in the following embodiments and reference examples of the present invention are all prepared by the following methods, and the difference between each embodiment and reference examples is only that the content of each component raw material is different:

[0057] 1) Add the natural rubber, butadiene rubber and low-density polyethylene in the parts by weight shown in Table 1 (or Table 2) to an internal mixer and mix at a temperature not exceeding 150°C, and cool down after mixing spare;

[0058] 2) Add the damping agent HC-1 (or organic small molecule NT636), carbon black, zinc oxide, stearic acid in parts by weight shown in Table 1 (or Table 2) to the product after the mixing in step 1) , paraffin, sulfur, vulcanization accelerator, sericite powder CA-1, machine oil No. 46 (or C9 petroleum resin), mixed at a temperature not exceeding 120°C for 5-7 minutes, unloaded, and cooled for later use;

[005...

Embodiment 1

[0063] Embodiment 1 is compared with reference example 1-2, and reference example 1 is the damping rubber that adopts traditional formula to make, and reference example 2 is the damping rubber that adopts organic small molecule to make, and it can be seen that the damping rubber of formula shown in the present invention Compared with the equivalent damping ratio of rubber, the equivalent damping ratio of the damping rubber of the formula shown in reference example 1 is 5 percentage points higher, which has a significant difference, and p is less than 0.05, while the equivalent damping ratio of the damping rubber of the formula shown in reference example 2 Roughly equal.

[0064] Compare in terms of cost: the small organic molecule NT636 used in reference example 2 is expensive, and the current market price is about 300 yuan / kg, resulting in the cost of the damping rubber prepared in reference example 2 being about 50-60 yuan / kilogram; The cost of the damping rubber that the ...

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Abstract

The invention discloses damping rubber with low cost and high damping performance and a manufacturing method thereof. The damping rubber comprises the following components: by weight, 19-30 parts of natural rubber, 8-20 parts of butadiene rubber, 1.8-10 parts of plastics, 19.5-26 parts of carbon black, 2-15 parts of damping agent HC-1 and 1-1.6 parts of vulcanization system. The natural rubber and butadiene rubber are mixed together to improve the relative stability of mechanical property in the repeated stress process of the rubber; the plastics with the temperature much different from the glass-transition temperature of the rubber is added, so that the range of the effective damping temperature of a final product is widened; the damping agent HC-1 is adopted to replace expensive small organic molecules, and the improvement on the damping performance of the rubber is roughly the same under the condition that the adding ratio is basically identical. The cost of the damping rubber formed by adopting the damping agent HC-1 is more than two times that of the damping rubber formed by adopting the small organic molecules.

Description

technical field [0001] The invention belongs to the field of functional polymers, and in particular relates to a low-cost, high-damping damping rubber and a preparation method thereof. Background technique [0002] Since the 1960s, shock isolation and energy consumption shock absorption technology has gradually attracted the attention of countries all over the world and has been widely used in building structures and bridge structures. Since the "5.12" Wenchuan Earthquake in our country, building, bridge shock absorption, and shock isolation technology have gradually received attention. Due to its excellent performance, low cost, and no pollution, high-damping rubber bearings have gradually gained attention in domestic bridge design. The method of improving the damping performance of rubber has been researched for more than 20 years at home and abroad. At present, the more mainstream methods mainly include: [0003] ①Rubber and rubber blending [0004] The glass transiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L23/06C08L23/08C08L25/06C08K13/02C08K3/04C08K3/22C08K3/06C08K3/34
CPCC08L7/00B29C35/02C08K2201/003C08L2205/035C08L2207/066C08L9/00C08L23/06C08L91/06C08K13/02C08K3/04C08K2003/2296C08K3/06C08K3/34C08K5/09C08L57/02
Inventor 王信君
Owner CHENGDU POLYTECHNIC
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