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Wide temperature range acrylate rubber based graphene oxide damping material and preparation method thereof

A technology of acrylate and damping materials, which is applied in the field of wide temperature range acrylate rubber (ACM)-based graphene oxide damping materials and its preparation, and can solve the problems of loss of damping effect, high damping performance, migration and loss of small molecule damping agents, etc. , to achieve the effect of increasing the glass transition temperature, improving the damping performance, and broadening the effective damping temperature range

Active Publication Date: 2018-02-16
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the research field of viscoelastic damping materials, there are mainly the following problems: (1) The good damping performance of viscoelastic damping materials is mainly around the glass transition temperature, but the lower glass transition temperature (mostly at minus degrees Celsius ) For actual working conditions, the application value is not high; (2) Viscoelastic damping materials often cannot take into account high damping performance (loss factor tan δ ≥0.3) and a wide effective damping temperature range (tan δ ≥0.3 temperature range) two conditions; (3) The damping process is the process of converting kinetic energy into heat energy. Therefore, in the actual use process, the heat inside the rubber rises sharply. On the one hand, it is easy to cause the migration and loss of small molecule damping agents and lose damping effect, on the other hand causes the aging of the rubber molecular chain

Method used

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  • Wide temperature range acrylate rubber based graphene oxide damping material and preparation method thereof
  • Wide temperature range acrylate rubber based graphene oxide damping material and preparation method thereof
  • Wide temperature range acrylate rubber based graphene oxide damping material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Step 1, measure 230 mL of concentrated sulfuric acid in a four-neck flask, place in an ice bath, and cool down to about 0 °C. Add 10 g of graphite and 5 g of sodium nitrate in turn, and stir the solution for 15 min. Then slowly add 30 g of potassium permanganate three times within 1 h, keeping the temperature below 20 °C. After mixing evenly, the temperature was raised to 35 °C and kept stirring for 2 h. After that, 460 mL of deionized water was slowly added. During this process, the temperature of the solution was kept below 100 °C for 15 min. The liquid was transferred to a beaker, and 750 mL of deionized water and 250 mL of 5% hydrogen peroxide solution were added. Then the graphene oxide is processed by ultrasound, dialysis, and drying, and the graphene oxide is characterized. The AFM map and its corresponding height map are as follows figure 2 As shown, the XPS diagram is as follows image 3 shown;

[0032] Step 2, put 0.5 g of large-sized graphene oxide obtai...

Embodiment 2

[0037] Repeat the method of Example 1, but in step one, the amount of potassium permanganate is 21 g; in step two, the amount of graphene oxide is 0.4 g; in step three, the mixing formula is 100 parts of ACM rubber, 50 parts of hindered phenol small molecules AO-80, 3 parts of stearic acid, 2 parts of vulcanization accelerator D, 4 parts of vulcanization accelerator DOTG, 2 parts of antioxidant 4010NA, 3 parts of antioxidant DPPD, 1 part of processing aid RL210, 3 parts of processing aid WS280, 4 parts sulfur. The effective damping temperature range of the obtained damping material is -7.2°C to 38.0°C, the temperature range width reaches 45.2°C, and the damping temperature range of the material after aging can also reach 42.4°C.

Embodiment 3

[0039]Repeat the method of Example 1, but in step one, the amount of potassium permanganate is 15 g; in step two, the amount of graphene oxide is 0.3 g; in step three, the mixing formula is 100 parts of ACM rubber, 30 parts of hindered phenol small molecules AO-60, 2 parts of stearic acid, 2 parts of vulcanization accelerator DOTG, 3 parts of antioxidant DPPD, 2 parts of processing aid WB222, 1 part of processing aid WS280, 3 parts of sulfur. The effective damping temperature range of the obtained damping material is -6.8°C to 37.8°C, the temperature range width reaches 44.6°C, and the damping temperature range of the material after aging can also reach 42.7°C.

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Abstract

The invention discloses a wide temperature range acrylate rubber (ACM) based graphene oxide damping material and a preparation method thereof. The method comprises the steps of: adjusting the dosage of oxidant to prepare of a graphene oxide dispersion liquid with certain size and a lot of polar groups on the surface; using mechanical blending method to blend ACM with hindered phenol small molecules, a curing agent and other compounding agents, then performing mixing with graphene oxide by solvent blending method, and conducting drying and vulcanizing so as to obtain the wide temperature rangeACM based damping rubber containing graphene oxide. According to the invention, graphene oxide with a lot of polar groups on the surface, hindered phenol small molecules and ACM are utilized to form astrong hydrogen bond, at the same time, the barrier properties of graphene oxide are utilized to greatly improve the effective damping temperature range of the ACM based graphene oxide damping material (with tan delta being greater than or equal to 0.3) and the damping properties after aging.

Description

technical field [0001] The invention belongs to the technical field of damping material preparation, and in particular relates to a wide temperature range acrylate rubber (ACM)-based graphene oxide damping material and a preparation method thereof. Background technique [0002] With the development of contemporary industrial technology, various fields have gradually realized the mechanization and automation of production. Although this has brought great convenience to our production and life, the accompanying vibration and noise have also brought great hidden dangers to our physical and mental health. At the same time, vibration will also seriously affect the mechanical equipment. service life and increase equipment maintenance costs. Therefore, shock and noise reduction has become an urgent problem to be solved. Using damping material is one of the main means to solve this problem. Viscoelastic damping material is a material that can convert a large amount of vibration e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/08C08K13/02C08K3/04C08K5/09C08K5/13C08K5/18C08K5/31
CPCC08K3/04C08K5/09C08K5/13C08K5/18C08K5/31C08K13/02C08K2201/014C08L33/08
Inventor 贾红兵张旭敏温彦威王经逸陈雁彬尹清薛晓东乔旭徐赵东
Owner NANJING UNIV OF SCI & TECH
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