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Thermoplastic polymer composition, method for preparing same, and damping device comprising same

A technology of thermoplastic polymers and compositions, applied in the direction of springs made of plastic materials, transportation and packaging, power devices, etc., can solve problems such as weak vibration damping

Pending Publication Date: 2021-05-21
HUTCHINSON SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These metal structural parts generally have satisfactory mechanical properties, but have the disadvantage of being relatively heavy and providing weak vibration damping especially when driving at frequencies of 1-3000 Hz and temperatures of 60-90 °C

Method used

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  • Thermoplastic polymer composition, method for preparing same, and damping device comprising same
  • Thermoplastic polymer composition, method for preparing same, and damping device comprising same
  • Thermoplastic polymer composition, method for preparing same, and damping device comprising same

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Embodiment approach

[0192] At -60°C, especially greater than 6.50% at 1Hz, greater than 4.90% at 100Hz and 4.40% at 500Hz,

[0193] At -70°C, especially greater than 7.50% at 1Hz, greater than 6.00% at 100Hz and greater than 5.50% at 500Hz,

[0194] -80°C, especially greater than 8.30% at 1 Hz, greater than 7.10% at 100 Hz and greater than 6.50% at 500 Hz, and

[0195] At -90°C, especially greater than 8.20% at 1 Hz, greater than 7.90% at 100 Hz and greater than 7.40% at 500 Hz, and unexpectedly greater than 7.10% at 1000 Hz and greater than 6.80% at 3000 Hz (values ​​generally more than twice that of composition C1) .

[0196] figure 2 It further indicates that the maximum tanδ is towards the low frequency (less than or equal to 1Hz, such as 10 -2 Hz-1 Hz), where the amount of PA 10T / X present in the composition increases, as shown by the tan δ peaks of compositions I2, I4.

[0197] image 3 The damping performance at 80°C after the RH50 adjustment was compared for the two respective PPAs ...

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Abstract

The invention relates to a thermoplastic polymer composition comprising a polyamide, to a method for the production thereof, and to a vibration-damping device for a motor vehicle. The composition (I1, I2, I3, I4) comprises:-an aliphatic polyamide,-a polyphthalamide from a C6-C12 aliphatic diamine and an aromatic diacid comprising terephthalic acid, the weight ratio of the aliphatic polyamide / polyphthalamide being greater than 1, and -a reinforcing filler comprising glass fibers. After "RH50" modulation, the composition has a maximum tan [delta] value according to ISO 6721-5 at 60-90 DEG C and 1-3000 Hz, wherein (i) at 60 DEG C, tan [delta]>4.20% and / or (ii) at 80 DEG C, tan [delta]>4.00% and / or (iii) at 90 DEG C, tan [delta]> 3.80%.

Description

technical field [0001] The invention relates to a thermoplastic polymer composition comprising a polyamide alloy, a process for its preparation and a device for automobiles capable of damping vibrations, in particular in the frequency range from 1 Hz to 3000 Hz and at temperatures from 60°C to 90°C. The invention is particularly applicable to any structural component that transmits vibrations, such as those received from the wheels of a vehicle, or to anti-vibration supports for vehicles with thermal, hybrid or electric motors that combine the first and The second rigid element and at the same time dampens vibrations between them and at the same time supports the load, such as a linking support connecting the engine to an element of the vehicle structure, such as its body, which is defined in such a way that the invention is applicable at frequencies Any anti-vibration or grounding system of a motor vehicle subjected to vibrations within all or part of the above ranges and opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08K7/14F16F1/36
CPCC08L77/06C08L77/02C08K7/14F16F1/3605C08L2205/025C08L2205/02C08G69/265B60K5/1208B29C45/0001B29K2077/10C08K3/40C08L77/10F16F15/00
Inventor A·卢卡斯M·杜多-皮拉
Owner HUTCHINSON SA