Noice insulation dumping noise reducing sheet material with high modulus material for car and preparation process thereof

A high-modulus, noise-reducing sheet technology, applied in the direction of sound-generating devices, instruments, etc., can solve problems such as large amount of inorganic filling, poor material fluidity, large motor load, etc., and achieve low electromechanical load and equipment wear, and sound insulation and noise reduction performance Improvement and excellent thermoforming performance

Inactive Publication Date: 2006-06-28
HENKEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This sheet has a good barrier type, but its material strength is low and cannot be molded. It is mostly used for flat floors of trucks or cars. This material is currently the main barrier sheet for vehicles in China.
[0007] PVC-based soft barrier sheet: This material is a thermoplastic barrier soft sheet of PVC filled with inorganic substances and plasticized with plasticizers. Due to the relatively large proportion of PVC resin itself, it can be easily prepared with high specific gravity. Sheet, but there are two major defects in this material: first, the low molecular plasticizer is easy to precipitate, which will greatly reduce the mechanical properties of the sheet, and when the sheet is poured with a soft polyurethane foam layer, the two materials Can not be effectively bonded; second, this kind of sheet is not easy to recycle, not environmentally friendly, it will release a large amount of harmful hydrogen chloride gas and produce carcinogens when burned
Chinese patent CN1583864A discloses a preparation method of a sound-insulating damping and noise-reducing sheet for cars, but the sound-insulating and noise-reducing effect is not outstanding
The

Method used

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  • Noice insulation dumping noise reducing sheet material with high modulus material for car and preparation process thereof
  • Noice insulation dumping noise reducing sheet material with high modulus material for car and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Accurately weigh each raw material for use according to each raw material component in the following table 3 respectively, first add inorganic filler, high modulus material, lubricant, coupling agent, antioxidant and dilution dispersant to high-speed mixer (model is SHR-100A) medium and high-speed mixing, heating up to 70°C, cooling to room temperature, and then mixing it with polyethylene matrix resin at high speed, extruding with STJ80 / 180 double-stage (double-single-screw) extrusion sheet unit, The process parameters are as follows: Twin-screw barrel temperature: first section 115°C, second section 125°C, third section 135°C, fourth section 140°C, fifth section 150°C, sixth section 160°C; transition zone temperature : 160°C; single-screw barrel temperature: first section 160°C, second section 160°C; network zone temperature: 160°C; coupling zone temperature: 160°C; twin-screw speed: 300 rpm; single-screw speed: 20 rpm / minute. Then through a T-shaped die, three-roll...

Embodiment 2

[0034] The method of Example 1 was repeated according to the distribution ratio of each component of the raw materials specified in Table 3 below, and the results are listed in Table 3.

Embodiment 3

[0036] Repeat the method of Example 1 according to the ratio of each component of the raw materials specified in the following table 3, but the process parameters are as follows during its extrusion: Twin-screw barrel temperature: 125 ° C in the first section, 135 ° C in the second section, and 140 ° C in the third section ℃, 150℃ in the 4th section, 155℃ in the 5th section, 165℃ in the 6th section; transition zone temperature: 165℃; single screw barrel temperature: 165℃ in the 1st section, 170℃ in the 2nd section; network zone temperature: 170 ℃; temperature in the coupling zone: 170°C; twin-screw speed: 250 rpm; single-screw speed: 25 rpm, and the results are listed in Table 3.

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Abstract

The invention discloses a vehicle using high molding quantity filling sound insulation damping noise reduction sheet material and the manufacture method. It has good sound insulation and noise reduction function, and has simple technology. The raw material includes polyvinyl alcohol resin, coupler, lubricant and powder material that has Mohí»s hardness above 6 as high molding quantity material.

Description

technical field [0001] The invention relates to a sound-insulating, damping, and noise-reducing sheet and a preparation method thereof, more specifically, to a high-modulus filled sound-insulating, damping, and noise-reducing sheet for vehicles and a preparation method thereof. Background technique [0002] With the development of China's national economy, people's living standards are getting higher and higher, and cars will become a new consumption hotspot in China. In recent years, the growth rate of domestic car consumption and production has exceeded 30%, which is higher than the national production of the same year. The annual growth rate of the total value is more than 20 percentage points higher. However, there is still a big gap between China's car production technology and foreign countries. An important aspect of this gap is reflected in the large-scale promotion and application of new materials and technologies in China. Therefore, we should closely aim at new ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08J5/18C08K5/524G10K11/162
Inventor 王东川钱时杰朱华平
Owner HENKEL CORP
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