Industrial Coating

P.V.C CAR UNDERBODY SEALANT

Constructional Coatings

 

 

 

 

 

 

 

P.V.C CAR UNDERBODY SEALANT

What makes PVC Important for Vehicles?

PVC makes a major contribution to the quality, safety and cost-effectiveness of modern road vehicles, as well as reducing their impact on the environment. In automotive applications it is the most important polymer and gives many benefits which we now take for granted - and would not like to lose.
In technical terms, the particular versatility of PVC allows for precise adjustments to its material properties to give the exact performance and quality requirements for specific enduse applications.

The benefits of PVC are that it:

Makes cars last longer
The average service life of a modern road vehicle is now 17 years in contrast to 111/2 years in the 1970s. PVC has made a special contribution to this as the principal protector of the underbody (in the form of a wear-resistant coating), as sealants against humidity and in other protective profiles. The durability of PVC has also made it a first choice for the cladding of interior parts such as dashboards and door panels. Longer lasting cars also mean a saving of natural resources.

Conserves fossil fuels
PVC itself is a material with comparatively low energy consumption thereby cutting down depletion of natural resources. In vehicles, this is enhanced further by the lightness of PVC components in comparison to traditional materials, therefore reducing weight and thus fuel consumption.

Reduces noise for car occupants
The sound-dampening properties of PVC in carpet backings, coatings and linings cuts down noise for the driver and passengers, increasing comfort and reducing stress.

Make cars more affordable
PVC compounds used in vehicles offer excellent costperformance advantages. As a result, they bring more quality vehicles into the price range of a greater number of people.

Helps save lives
PVC is important in shock absorbing car components such as 'soft' dashboards, reducing injury in the case of impact. In addition, its fire retardant properties contribute to the overall safety of the car.

Increases design freedom
This freedom given by PVC in car interiors allows for even the most chalenging designs to enhance the comfort of car interiors. PVC can be made to give many attractive qualities of appearance and leather-like softness.

Sepid Khodro – Sepitak's car underbody

This product is specially formulated for car underbodies and should be baked after being applied in 130/160 C.

Having thicsotropic characteristics makes its application easier because the coating can easily flow into nozzles and pipes of the airless spray, consequently, it would save time in production line of car manufacturers.

Sepid khodro has sound proofing characteristic and seal car underbodies in front of different weather circumstances, acids, salts and bases.

Properties:

  1. One component and easy to be applied
  2. Good adhesion property
  3. Not having hazardous elements to put human life in danger
  4. Homogenized
  5. Being resistant in front of shocks caused by sands
  6. Easy applications
  7. Resistant to chemical agents such as acid, base and different salts
  8. Odorless
  9. No sedimentation
  10. No change in viscosity after being stored
  11. No gas production after storage

Application method:

PVC car underbody can be applied by airless spray

Storage condition:
It can be stored at least for 6 months in good storage circumstances, away from direct Sun rays in temperature between 25~40 C.

Test Standard Test result
Product code - UD 6493
Physical characteristics - Odorless
Hue/color - Black - gray
Application method - Airless spray
Viscosity SP.7 ; 25 C; ROOKFIELD MODEL DV-II; (1 rpm) - 76000 – 84000 m.Pa.s
Nonvolatile materials ( Weight percent)% after being exposed to 160 C ASTM D1644 96 ± 1
Nonvolatile materials ( Weight percent)% ASTM D1644 98.6 ± 1
Ash content after being backed in 800 C - 23±1
Time and temperature for baking ASTM D1475 130 ~ 160 C & 20 ~ 40 min.
Direct Impulse ASTM D2794 1m-0.91 kg or 39.4 Inch-2 lb
Impulse ASTM D2794 1m- 0.91 kg or 39.4 inch – 2 lb
Bending test ASTM D1737 5 mm mandrel – DFT = 1 mm
Adhesion afer being backed in 160 C for 20
min		 ASTM D3359 On ED primers = 5 B
On ordinary primers = 5 B
On steel alloys without coating = 4 B
Humidity ( 500° ) ASTM D4585 Resistant
Salt spray (1000 Hrs.) ASTM B117 Resistant
Packing - 220 Kg drums
Storage - 6 months - away from direct sun rays in 25 C


ASTM Standard Organization ®