Noise reduction is an urgent issue in the automotive industry. The noise, vibration and sound vibration (NVH) inside the cockpit is more prominent in ultra-quiet electric vehicles. We hope that the cabin becomes a paradise for leisure and entertainment. Self-driving cars need a quiet internal environment.
Many components used in car dashboards, center consoles and trim strips are made of polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) alloy. When two parts move relatively to each other (stick-slip effect), friction and vibration will cause these materials to produce noise. Traditional noise solutions include the secondary application of felt, paint or lubricant, and special noise-reducing resins. The first option is multi-process, low efficiency and anti-noise instability, while the second option is very expensive.
Silike's anti-squeaking masterbatch are a special polysiloxane that provides excellent permanent anti-squeaking performance for PC / ABS parts at a lower cost. Since the anti-squeaking particles are incorporated during the mixing or injection molding process, there is no need for post-processing steps that slow down the production speed. It is important that SILIPLAS 2070 masterbatch maintain the mechanical properties of PC/ABS alloy-including its typical impact resistance. By expanding design freedom, this novel technology can benefit automotive OEMs and all walks of life. In the past, due to post-processing, complex part design became difficult or impossible to achieve complete post-processing coverage. In contrast, silicone additives do not need to modify the design to optimize their anti-squeaking performance. Silike's SILIPLAS 2070 is the first product in the new series of anti-noise silicone additives, which may be suitable for automobiles, transportation, consumer, construction and home appliances.
•Excellent noise reduction performance: RPN<3 (according to VDA 230-206)
• Reduce stick-slip
• Instant, long-lasting noise reduction characteristics
• Low coefficient of friction (COF)
• Minimal impact on the key mechanical properties of PC / ABS (impact, modulus, strength, elongation)
• Effective performance with low addition amount (4wt%)
• Easy to handle, free flowing particles
The noise risk priority index (RPN) results show that when the content of SILIPLAS 2070 is 4% (wt),the RPN is 2. RPN below 3 indicates that the noise is eliminated and there is no long-term application risk.
Test method |
Unit |
Typical value |
|
Appearance |
Visual inspection |
|
White pellet |
MI (190℃,10Kg) |
ISO1133 |
g/10min |
5 |
Density |
ISO1183 |
g/cm3 |
1.03-1.04 |
The graph of the pulse value change in the stick-slip test of PC/ABS after adding 4% SILIPLAS2070:
It can be seen that the stick-slip test pulse value of PC/ABS after adding 4% SILIPLAS2070 has dropped significantly, and the test conditions are V=1mm/s, F=10N.
After adding 4% SILIPLAS2070, the impact strength will not be affected.
• Minimize disturbing noise and vibration
• Provide stable COF during the service life of parts
• Optimize design freedom by implementing complex geometric shapes
• Simplify production by avoiding secondary operations
• Low dosage, improve cost control
• Automotive interior parts (trim, dashboard, console)
• Electrical parts (refrigerator tray) and trash can, washing machine, dishwasher)
• Building components (window frames),etc.
PC/ABS compounding plant and part forming plant
Added when the PC/ABS alloy is made, or after the PC/ABS alloy is made, and then melt-extrusion granulated, or it can be added directly and injection molded (under the premise of ensuring dispersion).
The recommended addition amount is 3-8%, the specific addition amount is obtained according to the experiment
25Kg / bag , craft paper bag.
Transport as non-hazardous chemical. Store in a cool , well ventilated place .
Original characteristics remain intact for 24 months from the production date , if kept in recommend storage.
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grades Silicone Masterbatch
grades Silicone Powder
grades Anti-scratch Masterbatch
grades Anti-abrasion Masterbatch
grades Si-TPV
grades Silicone Wax