Preparation of novel sound insulation and noise reduction film for automotive trim

A technology for automotive interior decoration and noise reduction, which is applied in the field of preparation of new sound insulation and noise reduction films for automotive interior decoration, can solve the problems of poor sound insulation effect of sound insulation and light blocking film, achieve good energy saving effect, ensure particle strength and temperature stability. Effect

Inactive Publication Date: 2019-11-15
ZHEJIANG RUNYANG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the sound-insulating and light-blocking film in this invention patent has the problem of poor sound-insulating effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation of a novel sound-insulating and noise-reducing film for automotive interiors, comprising the following preparation steps in sequence:

[0035] S1, batching according to the material ratio to obtain sheet raw materials;

[0036] S2. In the internal mixer, the sheet material in step S1 is mixed and granulated to obtain particles;

[0037] S3, fully mixing the particles in step S2, extruding and winding in a single-screw extruder to obtain a sheet;

[0038] S4. Perform high-energy electron radiation crosslinking treatment on the sheet in step S3 to obtain a sheet to be foamed;

[0039] S5. Foaming the sheet to be foamed in step S4 to obtain a final sound-insulating and noise-reducing film;

[0040] S6. Carry out crimp inspection on the sound-insulating and noise-reducing film in step S5, and pack it into a warehouse.

[0041] In step S1, the sheet material includes 50kg of low-density polyethylene, 2kg of foaming agent azodicarbonamide, 0.1kg of DSTDP anti...

Embodiment 2

[0048] A preparation of a novel sound-insulating and noise-reducing film for automotive interiors, comprising the following preparation steps in sequence:

[0049] S1, batching according to the material ratio to obtain sheet raw materials;

[0050] S2. In the internal mixer, the sheet material in step S1 is mixed and granulated to obtain particles;

[0051] S3, fully mixing the particles in step S2, extruding and winding in a single-screw extruder to obtain a sheet;

[0052] S4, performing high-energy electron radiation crosslinking treatment on the sheet in step S3 to obtain a sheet to be foamed;

[0053] S5. Foaming the sheet to be foamed in step S4 to obtain a final sound-insulating and noise-reducing film;

[0054] S6. Perform curl inspection on the sound-insulating and noise-reducing film in step S5, and pack it into a warehouse.

[0055] In step S1, the sheet material includes 60kg of low-density polyethylene, 8kg of blowing agent azodicarbonamide, 0.6kg of DSTDP anti...

Embodiment 3

[0062] A preparation of a novel sound-insulating and noise-reducing film for automotive interiors, comprising the following preparation steps in sequence:

[0063] S1, batching according to the material ratio to obtain sheet raw materials;

[0064] S2. In the internal mixer, the sheet material in step S1 is mixed and granulated to obtain particles;

[0065] S3, fully mixing the particles in step S2, extruding and winding in a single-screw extruder to obtain a sheet;

[0066] S4, performing high-energy electron radiation crosslinking treatment on the sheet in step S3 to obtain a sheet to be foamed;

[0067] S5. Foaming the sheet to be foamed in step S4 to obtain a final sound-insulating and noise-reducing film;

[0068] S6. Perform curl inspection on the sound-insulating and noise-reducing film in step S5, and pack it into a warehouse.

[0069] In step S1, the sheet material includes 90kg of low-density polyethylene, 15kg of blowing agent azodicarbonamide, 0.9kg of DSTDP ant...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to preparation of a novel sound insulation and noise reduction film for automotive trim. According to the preparation, through specific preparation of raw materials including low-density polyethylene, a foaming agent, an antioxidant and an auxiliary agent, partition type extrusion, high-energy electronirradiation cross-linking and partition type foaming processes are combined, so that the effect of effectively preparing the sound insulation and noise reduction film for the automotive trim is achieved. The coiled material preparation method of the sound insulation and noise reduction film for the automotive trim is simple and effective, the preparation process is reasonable and efficient in operation, economical and practical, and a prepared coiled material has the advantages of being small in density, good in impact resistance, high in flexibility and elasticity, obvious in sound insulation and noise reduction effects and long in overall service life.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to the preparation of a novel sound-insulating and noise-reducing film for automobile interior decoration. Background technique [0002] During the driving process of the car, the noise of the door interior will make people irritable, unresponsive, distracting, and cause traffic accidents. How to reduce the noise from the door trim is worthy of innovative research. [0003] The noise of the door interior comes from the resonance noise caused by the thinner door sheet metal, the noise generated by metal fatigue and the twisting of the body, and the wind noise and road noise during driving. Due to the thin thickness of the inner and outer panels of the car door, it will cause the acoustic cavity resonance phenomenon of the sheet metal. Aiming at the vibration problem of sheet metal, a sound-insulating and noise-reducing film is usually attached to the inner pan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/60B29C48/92B29C35/10B29C35/08C08L23/06C08L29/04C08K3/26C08K3/22C08J5/18B29L7/00
CPCB29C35/0866B29C35/10B29C44/60B29C2035/0877B29L2007/002B29C48/022B29C48/92B29C2948/92704C08J5/18C08J2323/06C08J2429/04C08K2003/2296C08K2003/265
Inventor 赵文坚姜兵徐杰杨庆锋
Owner ZHEJIANG RUNYANG NEW MATERIAL TECH
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