Sound and shock insulating composition for automobile interior decoration industry

A composition and technology in the decoration industry, which is applied in the field of sound-proof and shock-proof compositions in the automobile interior decoration industry, can solve problems such as large amount of inorganic filling, complicated process flow, and large aspect ratio, and achieve high elongation at break, technology The effect of simple process and high tensile strength
CN104479196AInactive Publication Date: 2015-04-01HEFEI CONVER HLDG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI CONVER HLDG
Publication Date
2015-04-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a sound and shock insulating composition for automobile interior decoration industry. The composition comprises polyethylene and modified hollow beads, wherein polyethylene is selected from high density polyethylene, low density polyethylene, ultra high molecular weight polyethylene and linear low density polyethylene; the grain size of the hollow beads is 0.1-400 microns, the true density is 0.4-2.5g / cm<3> and the bulk density is 0.26-1.2g / cm<3>. The finished product obtained by the invention has the characteristics of being high in tensile strength, high in elongation at break, flexible, damping, sound insulating and noise reducing, and is simple in technical process. The breaking strength of the obtained product is over 3402kpa, the elongation at break is over 485%, the hardness is over 78 shore hardness A and the noise exposure at 250hz is below 30 decibel. The composition simultaneously meets environmental technical indexes.
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Description

technical field

[0001] The invention relates to a composition for sound and shock insulation in the automobile interior decoration industry, more particularly to a sound and shock insulation composition for the automobile interior decoration industry. Background technique

[0002] With the prosperity and development of China's national economy and the higher and higher living standards of the people, cars will become a new consumption hotspot. The annual growth rate of 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 focus on new materials and technologies for foreign cars, narrow the gap, and raise the level of my country's car production technology to a higher level.

[0003] Improving the comfort and safety of cars and t...

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
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