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Wide-temperature-range damping vibration attenuation composite material and preparation method thereof

A composite material and wide temperature range technology, applied in the field of wide temperature range damping and vibration reduction composite materials and their preparation, can solve the problems of reducing the height of the damping peak, reduce the shrinkage stress and expansion coefficient, increase the loss, and improve the damping performance. Effect

Inactive Publication Date: 2018-07-06
翟琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of the traditional military industry, machinery field, or aerospace industry, home appliances, and construction fields, damping materials, as a class of environmentally friendly functional materials, will develop in the direction of high performance, wide temperature range, intelligence, and refinement. range while inevitably reducing the height of the damping peak

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Take 0.3g of silane coupling agent KH-550, add 50g of 90% ethanol solution in mass fraction, stir at 300r / min for 20min at 50°C, then add 3g of zinc oxide whiskers, continue to stir for 5h, filter to obtain filter residue, Wash the filter residue 3 times with deionized water, then place it in a vacuum drying oven, and dry it at 80°C for 12 hours to obtain modified zinc oxide whiskers. Take 20g of polyurethane SMPU402, 80g of epoxy resin, 20g of polyetheramine D400, and 1g of modified Zinc oxide whiskers, 3g cage polysilsesquioxane, stirred at 300r / min for 30min, evaporated on a rotary evaporator for 2h under reduced pressure, vacuum defoamed, placed in an oven, cured at 80°C for 8h , after cooling and demolding, put it into a pulverizer and crush it, pass through a 40-mesh sieve to obtain an elastomer vibrator, take 25g of ethylene-vinyl acetate rubber EVM800, 25g of ethylene-vinyl acetate rubber EVM900, 1g of stearic acid, 1g of anti-aging agent, add Mix in the torque ...

example 2

[0027]Take 0.4g of silane coupling agent KH-550, add 60g of 90% ethanol solution in mass fraction, stir at 55°C at 350r / min for 25min, then add 4g of zinc oxide whiskers, continue to stir for 8h, filter to obtain filter residue, Wash the filter residue 4 times with deionized water, then place it in a vacuum drying oven, and dry it at 85°C for 16 hours to obtain modified zinc oxide whiskers. Take 25g of polyurethane SMPU402, 75g of epoxy resin, 22g of polyetheramine D400, 1.5g Modified zinc oxide whiskers, 4g cage polysilsesquioxane, stirred at 350r / min for 35min, evaporated on a rotary evaporator for 2h under reduced pressure, vacuum defoamed, placed in an oven, and cured at 100°C 10h, after cooling and demoulding, put it into a pulverizer and pulverize it, pass through a 40-mesh sieve to obtain an elastomer vibrator, take 30g of ethylene-vinyl acetate rubber EVM800, 30g of ethylene-vinyl acetate rubber EVM900, 1g of stearic acid, 2g of anti-aging agent, Put it into the torque...

example 3

[0029] Take 0.5g of silane coupling agent KH-550, add 80g of 90% ethanol solution in mass fraction, stir at 60°C at 400r / min for 30min, then add 5g of zinc oxide whiskers, continue stirring for 12h, filter to obtain filter residue, Wash the filter residue 5 times with deionized water, then place it in a vacuum drying oven, and dry it at 90°C for 24 hours to obtain modified zinc oxide whiskers. Take 30g of polyurethane SMPU402, 80g of epoxy resin, 25g of polyetheramine D400, and 2g of modified zinc oxide whiskers. Zinc oxide whiskers, 5g cage-type polysilsesquioxane, stirred at 400r / min for 40min, evaporated on a rotary evaporator for 3h under reduced pressure, vacuum defoamed, placed in an oven, cured at 120°C for 12h , after cooling and demoulding, put it into a pulverizer to pulverize, pass through a 40-mesh sieve to obtain an elastomer vibrator, take 35g of ethylene-vinyl acetate rubber EVM800, 35g of ethylene-vinyl acetate rubber EVM900, 2g of stearic acid, 3g of anti-aging...

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Abstract

The invention relates to a wide-temperature-range damping vibration attenuation composite material and a preparation method thereof, and belongs to the technical field of functional materials. According to the method provided by the invention, zinc oxide crystal whiskers are subjected to surface treatment, the surface of the structure is better covered by a polymer chain segment, more interfacialdamping effects are generated when the chain segment moves, the chain segment is combined with cage-type polysilsesquioxane, slippage between the chain segment and the cage-type polysilsesquioxane caneffectively increase loss, a mass spring model is introduced, a polyurethane elastomer is regarded as a spring, the zinc oxide crystal whiskers with mass are used as a vibrator, local resonance is formed, finally the local resonance is dispersed in rubber, and syntony occurs between external vibration and an internal mass block while viscoelastic damping occurs, so that vibration is gradually attenuated; and from the overall structure of the damping composite material, the local resonance with the internal mass block and external viscoelastic damping have a synergistic effect, so that the damping performance of the damping composite material is improved.

Description

technical field [0001] The invention relates to a wide temperature range damping and vibration reduction composite material and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] With the development of science and technology and modern industry, mechanical equipment tends to be high-speed and automatic, and high-power machinery is increasing, and the problems of vibration, noise and fatigue failure caused by it are also becoming more and more serious. Vibration not only affects the improvement of mechanical equipment performance, but also seriously damages the stability and reliability of mechanical equipment operation, and causes equipment fatigue and service life decline, which inevitably increases the cost of enterprise maintenance, repair and replacement; Moreover, a large amount of noise generated by vibration pollutes the environment, and at the same time interferes with people's lives, endangers peopl...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/04C08L71/00C08L83/04C08L23/08C08K13/06C08K9/06C08K7/08C08K5/12C08K5/09C08K5/3437C08K5/18
Inventor 谷友宝王文新韩昏晓
Owner 翟琳
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