Sound insulation material composition and vehicle sound insulation sheet

A technology of sound insulation material and composition, which is applied in the field of auto parts, can solve the problem that the sound insulation effect cannot meet the requirements, and achieve the effect of increasing energy loss and increasing loss factor

Active Publication Date: 2017-07-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, PVC and EVA resins are generally used as base materials for vehicle sound insulation sheets, and the vehicle sound insulation sheets are prepared by adding a single sheet-like filler and ordinary inorganic fillers. The sound insulation effect of this type of material cannot meet the needs of current electric vehicles. Requirements for sound insulation materials generated by low-frequency or ultra-high-frequency noise

Method used

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  • Sound insulation material composition and vehicle sound insulation sheet
  • Sound insulation material composition and vehicle sound insulation sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 6kg of dolomite (the average particle size of dolomite is 200 mesh), 40kg of barium sulfate, and 0.5kg of silane coupling agent, and mix them in a mixer at 110°C for 5 minutes;

[0026] (2) Weigh 10kg of mica powder (the average particle size of mica powder is 325mm mesh), 3kg of paraffin oil and mix them evenly in a plastic container;

[0027] (3) Weigh 10kg of EVA, 5Kg of propylene-based elastomer (Vistamaxx 6102), 3kg of vinyl-based elastomer (Engage8150), 2kg of linear low-density polyethylene (LLDPE GA574-000), 1kg of EVA grafted maleic anhydride, Combustion agent (zinc borate 6kg, magnesium hydroxide 2kg, aluminum hydroxide 2kg) 10kg, carbon black 1kg and 2.3kg of stearic acid, zinc stearate, calcium oxide, anti-aging agent (dilauryl thiodipropionate ), put the mixture obtained in step (1) and step (2) together in a banbury mixer, set the temperature in the banbury mixer to 120°C, and banbury time for 15 minutes;

[0028] (4) The mixed material after ba...

Embodiment 2

[0030]Adopt the method identical with embodiment 1 to prepare sound insulation sheet, difference is, the average particle diameter of the dolomite that adopts in step (1) is 325 orders, and in step (2), the average particle diameter of the mica powder that adopts is 600 mesh; the vehicle sound-insulating sheet A2 of Example 2 was prepared.

Embodiment 3

[0032] Adopt the method identical with embodiment 1 to prepare sound insulation sheet, difference is that the average particle diameter of the dolomite that adopts in step (1) is 600 orders, and in step (2), the average particle diameter of the mica powder that adopts is 800 mesh; the vehicle sound-insulating sheet A3 of Example 3 was prepared.

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Abstract

The present application provides a sound insulation material composition and a vehicle sound insulation sheet, wherein the sound insulation material composition comprises, by weight, 50-300 parts of EVA, 10-300 parts of mica powder, 10-300 parts of dolomite, 10-50 parts of a thermoplastic resin, 10-100 parts of a toughening agent, 3-60 parts of a compatibilizer, 30-300 parts of a flame retardant agent, 10-80 parts of a plasticizer, and 100-500 parts of barium sulfate. The present invention further provides the vehicle sound insulation sheet. According to the present invention, by adding the sheet-like mica powder and the massive dolomite to the sound insulation material according to a certain weight ratio, the processing performance of the sound insulation material composition can be improved, and the effects of vibration absorption and sound insulation of the vehicle sound insulation sheet can be improved.

Description

technical field [0001] The invention belongs to the field of auto parts, in particular to a sound-insulating material composition and a sound-insulating sheet for vehicles. Background technique [0002] At present, due to the limited fossil energy resources and the environmental problems caused by automobile exhaust, electric vehicles and hybrid vehicles will become a new development direction. Therefore, the sound-generating components such as motors and electronic controls used in electric vehicles put forward higher requirements for the improvement of the NVH performance of the whole vehicle. Especially the noise in the high-frequency part is more prominent, so higher requirements are put forward for the noise-reducing materials. [0003] In the prior art, PVC and EVA resins are generally used as base materials for vehicle sound insulation sheets, and the vehicle sound insulation sheets are prepared by adding a single sheet-like filler and ordinary inorganic fillers. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/10C08L23/04C08L51/00C08L91/06C08K13/02C08K3/34C08K3/30C08K5/54C08K3/38C08K3/22C08K3/04C08K5/09C08K5/098
CPCC08L23/0853C08L2205/02C08L2205/035C08L23/10C08L23/04C08L23/0815C08L51/003C08L91/06C08K13/02C08K3/34C08K2003/3045C08K5/54C08K2003/387C08K2003/2224C08K2003/2227C08K3/04C08K5/09C08K5/098B60R13/08C08K3/30C08K5/0066C08L23/08C08L23/16C08L31/04C08L91/00G10K11/162C08L51/06C08K3/38C08K3/22C08K3/26B29K2023/0633B29K2023/083B29K2023/12B29C48/022C08K9/00C08K2201/005C08L23/06C08L23/12
Inventor 林信平张敏孙亚轩周明双
Owner BYD CO LTD
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