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A kind of damping rubber and preparation method thereof

A technology for damping rubber and rubber matrix, applied in the field of damping materials, can solve the problems of low molecular weight of hyperbranched polymers, unsatisfactory damping performance improvement, etc., and achieve the improvement of damping and other physical and mechanical properties, low cost, and economical and practical preparation process. Effect

Inactive Publication Date: 2018-04-17
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hyperbranched damping agent can improve the physical and mechanical properties of the rubber matrix such as damping to a certain extent, the molecular weight of the hyperbranched polymer in the damping agent is low, and it is not ideal in terms of improving the damping performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 5 g of hindered phenol A60, 40 g of tetrahydrofuran and 0.1 g of n-butyllithium into a four-necked flask, and stir vigorously at -70° C. for 1 hour under the protection of nitrogen. Then, it was reacted with 5 g of trimethylchlorosilane at 40° C. for 4 hours. The product was washed with methanol, precipitated by centrifugation, and dried in vacuum for 4 hours to obtain methyl etherified hindered phenol. Weigh 40g of methyl etherified hindered phenol and 0.3g of molybdenum oxide in a four-neck flask, under the protection of nitrogen, stir vigorously at 300°C for 5 hours, wash the product with methanol, centrifuge and precipitate, the precipitate is washed with solvent and then centrifuged , repeat the above steps until no unreacted substances are detected in the washing solution. The precipitate was vacuum-dried at 40° C. for 3 hours to obtain a hindered phenol containing double bond methyl etherification. Weigh 15g of methyl etherified hindered phenol containing...

Embodiment 2

[0032] Weigh 7g of hindered phenol A80, 45g of tetrahydrofuran and 0.15g of n-butyllithium in a four-necked flask, and stir vigorously at -75°C for 2 hours under the protection of nitrogen. Then, it was reacted with 8 g of trimethylchlorosilane at 50° C. for 3 hours. The product was washed with methanol, precipitated by centrifugation, and dried in vacuum for 4.5 hours to obtain methylated hindered phenol. Weigh 50g of methyl etherified hindered phenol and 0.4g of bismuth oxide in a four-neck flask, under the protection of nitrogen, stir vigorously at 400°C for 4 hours, wash the product with methanol, centrifuge and precipitate, and then wash the precipitate with solvent and then centrifuge , repeat the above steps until no unreacted substances are detected in the washing solution. The precipitate was vacuum-dried at 50° C. for 2.5 hours to obtain a hindered phenol containing double bond methyl etherification. Weigh 20g of methyl etherified hindered phenol containing double ...

Embodiment 3

[0035]Weigh 10 g of hindered phenol A80, 50 g of tetrahydrofuran and 0.2 g of n-butyllithium in a four-neck flask, and stir vigorously at -80° C. for 3 hours under the protection of nitrogen. Then, it was reacted with 10 g of trimethylchlorosilane at 60° C. for 2 hours. The product was washed with methanol, precipitated by centrifugation, and dried in vacuum for 5 hours to obtain methyl etherified hindered phenol. Weigh 60g of methyl etherified hindered phenol and 0.5g of molybdenum oxide, bismuth oxide, iron oxide and antimony oxide in a four-necked flask, under the protection of nitrogen, stir vigorously at 500°C for 3 hours, wash the product with methanol, centrifuge and precipitate, The precipitate was washed with a solvent and centrifuged again, and the above steps were repeated until no unreacted substance was detected in the washing solution. The precipitate was vacuum-dried at 60° C. for 2 hours to obtain a hindered phenol containing double bond methyl etherification....

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PUM

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Abstract

The invention relates to a damping rubber material and a preparing method thereof.The rubber material is prepared from, by weight, 100 parts of rubber matrix,10-20 parts of high molecular weight hindered phenol, 2-3 parts of vulcanizing agent, 2-3 parts of accelerant, 0.5-1.0 part of stearic acid, 1-3 parts of zinc oxide and 30-50 parts of carbon black.The raw materials are placed in an open mill according to the formula for mixing, and damping rubber containing high-molecular-weight hindered phenol is obtained after mixing, wherein the temperature of the open mill is set to be 155-165 DEG C, and mixing time is 45-60 min.Compared with the prior art, the material prepared with the method has the advantages that damping effect is good, the preparing technology is economical and practical, the preparing process is simple, cost is low, and large-scale production can be achieved easily.

Description

technical field [0001] The invention relates to a damping material, in particular to a damping rubber containing high molecular weight hindered phenol and a preparation method thereof. Background technique [0002] Vibration and noise are generated during the operation of automobiles, rail trains and other vehicles, which will accelerate the fatigue damage of automobile-related parts, pollute the urban environment and endanger human health. Therefore, the development of new damping materials, the improvement of their damping and vibration reduction effects, and the optimization of the working environment of vehicle parts are crucial to urban safety and healthy economic development. [0003] Damping materials can absorb vibration mechanical energy and convert it into heat energy and lose it. Damping materials can be divided into ceramic damping materials, piezoelectric damping materials, high damping alloy materials, polymer damping materials and organic-inorganic hybrid dam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L13/00C08L25/18C08K13/02C08K3/22C08K5/40C08K3/04C08K3/06C08F112/14C07F7/18
CPCC07F7/1804C08F112/14C08L13/00C08L25/18C08K13/02C08K2003/2296C08K5/40C08K3/04C08K3/06
Inventor 王锦成杨思远南子婧尹聪毅韦小凤
Owner SHANGHAI UNIV OF ENG SCI
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