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A kind of modified hindered phenol damping agent and its preparation method and application

A hindered phenol and damping agent technology, applied in the field of damping materials, can solve the problems of long-term maintenance and easy migration that affect the damping effect, and achieve the effects of enhancing compatibility, overcoming easy migration, and broad application prospects

Active Publication Date: 2018-08-24
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the deepening of research, it is found that small molecular hindered phenols are easy to migrate to the surface of the material in polymer materials, which affects the long-term maintenance of its damping effect

Method used

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  • A kind of modified hindered phenol damping agent and its preparation method and application
  • A kind of modified hindered phenol damping agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer:

[0035] Add 0.2mol methyl acrylate, 0.4mol diethanolamine and 20mL methanol into the three-necked flask, 2 Stir and react at 20°C for 50 minutes under protection, then raise the temperature to 30°C and keep it warm for 6 hours, then end the reaction, vacuumize to remove excess methanol solvent, and obtain a colorless and transparent oily substance, which is: N,N-dihydroxyethyl- Methyl 3-aminopropionate monomer.

[0036] 2. Preparation of modified hindered phenol damping agent:

[0037] Take by weighing 50g of BASF Antioxidant 1010, 80g of the N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer and 0.5g of p-toluenesulfonic acid prepared in the above steps in a four-necked flask, in N 2 Under protection, the reaction was stirred at 110°C for 7 hours, and then vacuumized to remove unreacted N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer, and the resulting residue w...

Embodiment 2

[0039] 1. Preparation of N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer:

[0040] Add 0.3mol methyl acrylate, 0.6mol diethanolamine and 25mL methanol into the three-necked flask, 2 Stir and react at 25°C for 45 minutes under protection, then raise the temperature to 40°C and keep the temperature for 5 hours, then end the reaction, vacuumize to remove excess methanol solvent, and obtain a colorless and transparent oil, which is: N,N-dihydroxyethyl- Methyl 3-aminopropionate monomer.

[0041] 2. Preparation of modified hindered phenol damping agent:

[0042] Take by weighing 65g of BASF Antioxidant 1076, 90g of the N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer and 0.6g of p-toluenesulfonic acid prepared in the above steps in a four-necked flask, in N 2 Under protection, the reaction was stirred at 100°C for 8 hours, and then vacuumized to remove unreacted N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer, and the resulting residue was ...

Embodiment 3

[0044] 1. Preparation of N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer:

[0045] Add 0.4mol methyl acrylate, 0.8mol diethanolamine and 30mL methanol into the three-necked flask, 2 Stir and react at 30°C for 40min under protection, then raise the temperature to 50°C and keep it warm for 4h, then end the reaction, vacuumize to remove excess methanol solvent, and obtain a colorless and transparent oily substance, which is: N,N-dihydroxyethyl- Methyl 3-aminopropionate monomer.

[0046] 2. Preparation of modified hindered phenol damping agent:

[0047] Take by weighing 80g of BASF Antioxidant 1076, 100g of the N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer and 0.8g of p-toluenesulfonic acid prepared in the above steps in a four-necked flask, in N 2 Under protection, the reaction was stirred at 110°C for 7 hours, and then vacuumized to remove unreacted N,N-dihydroxyethyl-3-aminopropionic acid methyl ester monomer, and the resulting residue was washed...

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Abstract

The invention discloses a modified hindered phenol damping agent, and a preparation method and applications thereof. The modified hindered phenol damping agent is prepared via hyperbranched modification of hindered phenol with a N,N-dihydroxyethyl-3-amino methyl propionate monomer. The preparation method comprises following steps: hindered phenol, the N,N-dihydroxyethyl-3-amino methyl propionate monomer, and a catalyst are mixed at a certain ratio; and an obtained mixture is subjected to 7 to 9h of stirring reaction at 90 to 110 DEG C under inert gas shielding so as to obtain a finished product. A damping rubber material can be prepared by adding 5 to 10 mass parts of the modified hindered phenol damping agent into 100 mass parts of a rubber matrix. It is shown by experiments that the modified hindered phenol damping agent can be uniformly dispersed into the rubber matrix material, and is capable of improving damping performance, mechanical properties, and wear resistance of the obtained damping rubber material obviously.

Description

technical field [0001] The invention relates to a damping agent and its preparation method and application, in particular to a modified hindered phenol damping agent and its preparation method and application, belonging to the technical field of damping materials. Background technique [0002] The rapid development of modern industry makes mechanical equipment tend to be high-speed, and a series of problems such as vibration and noise related to machinery also arise. These problems accelerate the fatigue damage of mechanical structures and shorten their service life. It also pollutes the environment and endangers human health. Therefore, it is very important to develop high-efficiency damping materials with excellent performance, improve their damping and vibration reduction effects, and improve the operating environment of mechanical equipment. [0003] Damping material is a functional material that can absorb vibration mechanical energy and convert it into heat energy for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08L27/16C08L87/00C08K3/04C08K3/22C08K3/06
CPCC08G83/005C08G2350/00C08L27/12C08L27/16C08L87/00C08K3/04C08K2003/222C08K3/06
Inventor 王锦成李茹梦曹付海杨思远
Owner SHANGHAI UNIV OF ENG SCI
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