If the proportion of nylon toughening agent added is high, the effect on the softness and hardness of nylon pipes

The higher the addition of toughening agent, the softer the pipe, the lower the rigidity, the lower the hardness, and the better the impact; But after reaching the critical point, there will be a significant decline in strength, temperature resistance, wear resistance, and dimensional stability, and extrusion molding is also more prone to problems. 1. Hardness/rigidity variation law (conventional POE based nylon toughening agent, maleic anhydride grafted type)
No toughening agent added: The pipe is hard and stiff, with a high Shore D value, and is prone to brittle cracking at low temperatures
3% to 8% (commonly used range): Minor toughening, minimal decrease in hardness, balancing stiffness and low-temperature impact resistance, most commonly used for oil and pneumatic pipes
10%~15%: significantly softened, less prone to cracking when bent, significantly reduced Shore D, easy to flatten and rebound of the pipe
>20%: The softness has significantly increased, the rigidity and bending modulus have dropped significantly, the pipe lacks support, and its ability to withstand pressure and deformation has deteriorated 2. Consecutive effects:
As the dosage increases, the low-temperature toughness, cracking resistance, and resistance to repeated bending are improved, and the resistance to brittleness is better at -40 ℃.