Automobile sound insulation pad skin and preparation thereof

A technology of automobile sound insulation pad and skin, which is applied in the field of automobile sound insulation pad skin and its preparation, which can solve the problems of the mechanical performance and temperature resistance performance of the sound insulation pad skin, and lose the function of use, so as to achieve the effect of ensuring the mechanical performance and temperature resistance performance

Inactive Publication Date: 2020-03-06
SHANGHAI HUAGU VEHICLE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used inorganic fillers in the skin of automobile sound insulation mats are calcium carbonate, barium sulfate, etc., but after these inorganic fillers are added to the skin of automobile sound insulation mats, the maximum specific gravity can only reach 1.8g / cm 3 , when it is exceeded, the mechanical properties and temperature resistance of the skin of the sound insulation pad will be greatly reduced, and the use function will be lost.

Method used

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  • Automobile sound insulation pad skin and preparation thereof
  • Automobile sound insulation pad skin and preparation thereof
  • Automobile sound insulation pad skin and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] A kind of preparation method of automobile sound insulation pad epidermis is provided in each following embodiment, specifically comprises the following steps:

[0025] Step 1: Weigh all raw materials according to Table 1 below, and mix them evenly in a mixer;

[0026] Step 2: Put the uniformly mixed material into the pressurized internal mixer for mixing and plasticization. The internal mixing temperature is 160-180°C and the time is 30-50min. After completion, the plasticized material is passed through the conical twin-screw feeder Forcibly fed into the model KSJ-150 extruder produced by Kunshan Kexin Rubber and Plastic Machinery Co., Ltd., and passed through a T-shaped die head in the shape of a coat hanger, three-roll calendering, traction, and shearing to obtain a plate or sheet and Extrusion, the temperature of the extruder can be set as follows: Zone 1: 160±20℃, Zone 2: 175±20℃, Zone 3: 175±20℃, Zone 4: 170±20℃, Zone 5: 165±20 ℃, zone 6: 165±20℃, zone 7: 165±20℃...

Embodiment 5- Embodiment 12

[0038] Compared with Example 1, most of them are the same, except that in this example, EPDM is replaced by SEBS, SIS, SEPS, SBS, EVA, EMA, TPU or TPV respectively.

[0039] The above-mentioned SEBS, SIS, SEPS, SBS, and ethylene-propylene rubber can also be replaced by their oil-extended products. The specific preparation method is as follows: take SEBS and other styrene block copolymer-like elastomers or ethylene-propylene rubber, and heat up in a high-speed mixer. To 40-60°C, add rubber extension oil (paraffin oil) at a mass ratio of 1:1, and treat for 10-20 minutes to obtain an oil-extended product.

Embodiment 13- Embodiment 14

[0041] Compared with Example 1, most of them are the same, except that in this example, PE is replaced by PP or PS of equal quality.

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Abstract

The invention relates to an automobile sound insulation pad skin and preparation thereof. The automobile sound insulation pad skin comprises the following components by weight: 10-30 parts of a firstcomponent, 0-20 parts of a polyolefin plastic, 0-45 parts of inorganic filler, 30-85 parts of phosphorus iron powder, 0.5-2 parts of a processing aid, and 0.05-1.5 parts of a thermal oxygen stabilizer, wherein the first component is one of or a mixture of several of a polyolefin elastomer POE, a styrene block copolymer elastomer or an oil-filled product thereof, ethylene propylene rubber or an oil-filled product thereof, EVA, EMA, TPU or TPV. Compared with the prior art, according to the invention, phosphorus iron powder is introduced into the formula of the skin, while the specific gravity ofthe sound insulation pad skin is effectively increased, the mechanical properties and temperature resistance of the sound insulation pad skin are ensured, so that compared with conventional skin, thesound insulation amount of the finally prepared skin material can maximumly be reduced by about 5db or even higher under the conditions of a same thickness and a same filler adding amount.

Description

technical field [0001] The invention belongs to the technical field of sound-insulating pad skin preparation, and relates to an automobile sound-insulating pad skin and its preparation. Background technique [0002] The car front wall sound insulation pad is composed of a skin layer and a PU foam layer or fiber cotton, wherein the skin layer plays a role of sound insulation, and the PU foam layer or fiber cotton plays a role of sound absorption. The skin of the car sound insulation pad mainly plays the role of sound insulation, the heavier the weight per unit area, the better the sound insulation effect. At the same time, in order to facilitate installation and prevent damage, etc., the material must have appropriate hardness and strength. The shape of the skin of the car sound insulation pad is complex, the size is large, the length, width and height can reach 1.5 meters, 1 meter, and 0.5 meters respectively, and the thickness of the skin is generally 1-3 mm. Such a size a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/16C08L23/06C08K3/30C08K3/32C08K5/098C08K13/02
CPCC08K2003/3045C08L23/0815C08L2201/08C08L2205/02C08L2205/03C08L2205/035C08L23/16C08L23/0853C08L23/06C08K3/30C08K3/32C08K5/098C08K13/02
Inventor 钱时杰陈志峰
Owner SHANGHAI HUAGU VEHICLE IND CO LTD
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