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
View PDF7 Cites 11 Cited by
  • 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 ca

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automobile sound insulation pad and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] S1, weigh 60 parts of PC resin, 39.5 parts of ABS resin, 5.5 parts of nano-silica, 0.55 part of dioctadecyl alcohol pentaerythritol diphosphite, 0.55 part of fatty acid amide, the relative molecular weight of the PC resin is 17000g / mol, the glass transition temperature is 140℃;

[0028] S2, disperse nano-silicon dioxide in pure water through ultrasonic vibration equipment to form inorganic nano-particle dispersion;

[0029] S3, the dispersion liquid obtained in step S2 is injected into the twin-screw extruder through the liquid feed pump, and blended with the ABS resin, and the water is all evaporated and the mixture formed by the inorganic nanoparticles and the ABS resin is left;

[0030] S4, adding the mixture obtained in step S3, PC resin, dioctadecyl alcohol pentaerythritol diphosphite and fatty acid amide into a mixing mixer for mixing, and blending and granulating by a twin-screw extruder, and the barrel temperature is 210 ° C , the screw spe...

Example Embodiment

[0039] Example 2

[0040] S1, weigh 60 parts of PC resin, 39.5 parts of ABS resin, 5.5 parts of nano-silica, 0.55 part of dioctadecyl alcohol pentaerythritol diphosphite, 0.55 part of fatty acid amide, the relative molecular weight of the PC resin is 30000g / mol, the glass transition temperature is 150℃;

[0041] S2, disperse nano-silicon dioxide in pure water through ultrasonic vibration equipment to form inorganic nano-particle dispersion;

[0042] S3, the dispersion liquid obtained in step S2 is injected into the twin-screw extruder through the liquid feed pump, and blended with the ABS resin, and the water is all evaporated and the mixture formed by the inorganic nanoparticles and the ABS resin is left;

[0043] S4, adding the mixture obtained in step S3 and PC resin, dioctadecyl alcohol pentaerythritol diphosphite and fatty acid amide into the mixing mixer for mixing, and blending and granulating by twin-screw extruder, and the barrel temperature is 210~ 290℃, the screw...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Glass transition temperatureaaaaaaaaaa
Melt indexaaaaaaaaaa
Glass transition temperatureaaaaaaaaaa
Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products