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A kind of preparation method of laminated sound insulation material

A sound insulation material and a technology for preparation steps are applied in the field of preparation of laminated sound insulation materials, which can solve the problems of low sound insulation and achieve the effects of improving viscous resistance, improving sound absorption performance and good damping effect.

Active Publication Date: 2020-01-17
NANJING MANSE ACOUSTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved by the present invention: Aiming at the problem of low sound insulation of existing materials, a preparation method of laminated sound insulation materials is provided

Method used

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  • A kind of preparation method of laminated sound insulation material

Examples

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Effect test

example 1

[0028] Take 80g of nitrile rubber, 3g of zinc oxide, 1g of stearic acid, and 1g of anti-aging agent H, and add them into the torque rheometer for mixing for 8 minutes. The temperature is controlled at 120°C and the speed is 80r / min. Dioctyl phthalate, 1g sublimed sulfur, continue to mix for 8min, cool to room temperature to get the mixed rubber, place the mixed rubber on a flat vulcanizer, preheat at 120°C for 15min, then heat at 160°C, 8MPa Molded and vulcanized for 10 minutes, taken out and made into a sheet with a thickness of 3 mm, and cooled to room temperature to obtain a damping rubber. Take 20 g of titanate coupling agent and 50 g of silane coupling agent and add it to 1.0 L of deionized water. Stir at 300r / min for 3 hours, add 500g of acetone after cooling to room temperature, and put it into a centrifuge for centrifugation, take the upper layer solution to distill under reduced pressure to remove acetone, and obtain a macromolecular coupling agent, take 50g of macromo...

example 2

[0030]Take 90g of nitrile rubber, 4g of zinc oxide, 1g of stearic acid, and 2g of antioxidant H, and add them into a torque rheometer for mixing for 10 minutes. The temperature is controlled at 140°C, and the speed is 90r / min. Dioctyl phthalate, 1g sublimated sulfur, continue mixing for 10min, cool to room temperature to get the mixed rubber, put the mixed rubber on a flat vulcanizer, preheat at 130°C for 20min, and then heat it at 170°C, 10MPa Molded and vulcanized for 12 minutes, taken out and made into a sheet with a thickness of 4mm, and cooled to room temperature to obtain a damping rubber. Take 35g of titanate coupling agent and 65g of silane coupling agent and add it to 1.1L of deionized water. Stir at 350r / min for 3 hours, add 550g of acetone after cooling to room temperature, and put it into a centrifuge for centrifugation, take the upper layer solution to distill under reduced pressure to remove acetone, and obtain a macromolecular coupling agent, take 65g of macromol...

example 3

[0032] Take 100g of nitrile rubber, 5g of zinc oxide, 2g of stearic acid, and 3g of antioxidant H, and add them into a torque rheometer for mixing for 12 minutes. Dioctyl phthalate, 2g sublimated sulfur, continue mixing for 12min, cool to room temperature to get the mixed rubber, place the mixed rubber on a flat vulcanizer, preheat at 140°C for 25min, and then heat it at 180°C, 12MPa Molded and vulcanized for 15 minutes, taken out and made into a sheet with a thickness of 5mm, and cooled to room temperature to obtain a damping rubber. Take 50g of titanate coupling agent and 80g of silane coupling agent and add it to 1.2L of deionized water. Stir at 400r / min for 4 hours, add 600g of acetone after cooling to room temperature, and put it into a centrifuge for centrifugation, take the upper layer solution to distill under reduced pressure to remove acetone, and obtain a macromolecular coupling agent, take 80g of macromolecular coupling agent, 400g of silicic acid Add ethyl ester t...

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Abstract

The invention relates to a preparation method of a laminated sound insulation material and belongs to the technical field of sound insulation materials. The preparation method is characterized in thatamorphous nano-silica formed by hydrolyzing ethyl silicate is deposited into internal pores of a medium density fiberboard with a coupling agent; the pores of the prepared composite medium density fiberboard have high extension tortuosity, and an internal channel is complex, so that sound waves have high consumption in the communicated pores after entering the material, and the sound absorption property is effectively improved; meanwhile, the roughness of pore walls is improved, the viscosity of air in the pores is improved, and viscous resistance is improved; due to the viscous resistance ofthe air and friction between air molecules and the pore walls, sound energy is converted into electric energy and further is consumed; because of more internal pores, the sound waves repeatedly propagate and further energy is continuously converted and dissipates, and the material absorbs partial sound energy; meanwhile, a large amount of micro pores and holes are formed inside the material, so that gap air at the holes vibrates to dissipate the sound energy, and propagation of sound is well stopped and attenuated in a micro-element structure.

Description

technical field [0001] The invention relates to a preparation method of a laminated sound-insulating material, which belongs to the technical field of sound-insulating materials. Background technique [0002] With the rapid development of modern technology, industry and transportation, it also brings many unpleasant voices that often make people feel anxious and irritable. People call these chaotic, intermittent or irregular sounds in amplitude and frequency as noise. Noise is everywhere, and all directions and distances in the environment are different. The noise reflected by itself or the surrounding is collectively called environmental noise. When it exceeds Noise pollution is formed when the environmental noise emission standards stipulated by the state have adverse effects on people and the surrounding environment. At present, noise pollution has become one of the four major environmental pollution and an important environmental hazard. [0003] The effective preventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B7/12B32B25/00B32B25/10C08L9/02C08K3/22C08K5/09C08K3/04C08K5/12C08K13/02
CPCB32B7/12B32B25/00B32B25/10B32B2307/102C08K3/04C08K3/22C08K5/09C08K5/12C08K13/02C08K2003/2296C08L9/02
Inventor 吴伟华王文新朱华
Owner NANJING MANSE ACOUSTIC TECH CO LTD
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