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Automobile sound insulation pad and preparation method thereof

A technology for automobile sound insulation pads and sound insulation layers, which is applied in vehicle parts, transportation and packaging, etc., can solve the problems of exposed fiber felt, strong smell of fiber felt, and easy pollution of the environment, and achieves improved strength and toughness, low mold shrinkage, and low mold shrinkage. Good sound absorption effect

Inactive Publication Date: 2015-06-24
CHONGQING TECH & BUSINESS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fiber felt sound insulation pads mainly have the following problems: 1. The fiber felt reinforced with phenolic resin has a strong smell and is easy to pollute the environment; 2. The fiber felt is exposed, which easily causes volatile organic compounds (VOC) to exceed the standard, and the smell cannot meet the technical requirements of the main engine factory. Requirements; 3. Insufficient toughness of the finish layer; 4. Poor sound insulation effect

Method used

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  • Automobile sound insulation pad and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] S1, take by weighing 60 parts of PC resin, 39.5 parts of ABS resin, 5.5 parts of nano silicon dioxide, 0.55 part of dioctadecyl alcohol pentaerythritol diphosphite, 0.55 part of fatty acid amide, and the relative molecular weight of described PC resin is 17000g / mol, the glass transition temperature is 140°C;

[0028] S2. Dispersing nano silicon dioxide in pure water through an ultrasonic oscillation device to form an inorganic nano particle dispersion;

[0029] S3, injecting the dispersion obtained in step S2 into a twin-screw extruder through a liquid feeding pump, blending with ABS resin, evaporating all the water and leaving a mixture of inorganic nanoparticles and ABS resin;

[0030] S4. Add the mixture obtained in step S3, PC resin, dioctadecyl alcohol pentaerythritol diphosphite and fatty acid amide into a mixing mixer for mixing, and blend and granulate through a twin-screw extruder. The barrel temperature is 210°C , the screw speed is 320rpm, and the PC / ABS al...

Embodiment 2

[0040] S1, take by weighing 60 parts of PC resin, 39.5 parts of ABS resin, 5.5 parts of nano silicon dioxide, 0.55 part of dioctadecyl alcohol pentaerythritol diphosphite, 0.55 part of fatty acid amide, and the relative molecular weight of described PC resin is 30000g / mol, the glass transition temperature is 150°C;

[0041] S2. Dispersing nano silicon dioxide in pure water through an ultrasonic oscillation device to form an inorganic nano particle dispersion;

[0042] S3, injecting the dispersion obtained in step S2 into a twin-screw extruder through a liquid feeding pump, blending with ABS resin, evaporating all the water and leaving a mixture of inorganic nanoparticles and ABS resin;

[0043] S4. Add the mixture obtained in step S3, PC resin, dioctadecyl alcohol pentaerythritol diphosphite and fatty acid amide into a mixing mixer for mixing, and blend and granulate through a twin-screw extruder. The temperature of the barrel is 210~ 290°C, the screw speed is 320-620rpm, an...

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Abstract

The invention discloses an automobile sound insulation pad and a preparation method thereof. The sound insulation pad comprises a finish coat layer, a first sound insulation layer, a blend fiber mat, a second sound insulation layer and a honeycomb bottom layer which are arranged in sequence from top to bottom, the finish coat layer is made of PC / ABS alloy, the first sound insulation layer and the second sound insulation layer are both made of PP / PET composite short fiber, the inner wall of the honeycomb bottom layer is coated with an inorfil coating layer, the inorfil coating layer is a plant fiber coating layer, and the thickness of the plant fiber coating layer ranges from 20 mm to 35 mm. The automobile sound insulation pad obtained through the preparation method is low in weight, good in sound absorption effect, environment friendly and capable of being recycled and reused, can satisfy use requirements of customers well and conforms to the requirements of light weight, environment friendliness and comfort for modern automobiles.

Description

technical field [0001] The invention relates to the field of automobile interior parts, in particular to an automobile sound insulation pad and a preparation method thereof. Background technique [0002] Car sound insulation pads can be applied to various parts of the car engine compartment, passenger compartment, trunk, etc., and have the characteristics of shock absorption, sound absorption, and heat insulation. The interior, like the appearance of the car, has become an important factor for people to choose a car, so the requirements for the interior parts of the car are getting higher and higher. At present, car sound insulation pads are mainly made of recycled fiber felt and PU foam. The existing fiber felt sound insulation pads mainly have the following problems: 1. The fiber felt reinforced with phenolic resin has a strong smell and is easy to pollute the environment; 2. The fiber felt is exposed, which easily causes volatile organic compounds (VOC) to exceed the sta...

Claims

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Application Information

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IPC IPC(8): B60R13/08B60R13/01C08L69/00C08L55/02C08K3/36C08K5/524C08K5/20C08L23/12C08L67/02
CPCB60R13/08
Inventor 邹昌平冯建琼陈靖胡耿完旭峰
Owner CHONGQING TECH & BUSINESS INST
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