Question:medium

Arrange the NR (Natural Rubber) modulus properties in descending order with same dose of cross linkers:
A. Vulcanized NR with 30 phr Carbon black (HAF)
B. Vulcanized NR with 10 phr Plasticizer (DOP)
C. Vulcanized NR
D. Vulcanized NR with 10 phr DOP and 30 phr HAF.
Choose the correct answer from the options given below:

Show Hint

Fillers like Carbon Black are "Hardeners," and Plasticizers are "Softeners." If you want the highest modulus, look for the most filler with the least plasticizer!
Updated On: May 20, 2026
  • D, A, C, B
  • C, D, A, B
  • D, A, B, C
  • A, D, C, B
Show Solution

The Correct Option is D

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