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Why Reinforced Nylon with High Percentage of Toughening Agent is Easy to Break the Strip?

Time : 2023-07-06 Hits : 8

Due to its exceptional mechanical qualities, including high strength, stiffness, and toughness, reinforced nylon is a well-liked polymer that is frequently utilized in a variety of industries. However, the material becomes more prone to tearing the strip as the proportion of the toughening ingredient in reinforced nylon increases. 

Overview of Toughening Agent and Reinforced Nylon

Nylon resin and a reinforcing agent, such as glass fiber, carbon fiber, or other additions that can enhance nylon's mechanical characteristics, are combined to form reinforced nylon, a composite material. The strength, stiffness, impact resistance, and other qualities of reinforced nylon can differ greatly depending on the reinforcement and the production method.

An addition known as a toughening agent can increase the toughness of polymeric polymers like nylon. Toughening agents function by making a material less brittle and more resistant to fracture propagation. The mechanical characteristics of nylon may be changed by using a variety of toughening agents, including elastomers, thermoplastic resins, and core-shell particles.

Why Is It Simple To Break The Strip Of Reinforced Nylon With A High Percentage Of Toughening Agent?

Despite the advantages of toughening agents, adding more of these additives to reinforced nylon may reduce the material's toughness and make the strip more prone to breaking when exposed to corrosive environments or powerful pressures. Some of the causes of this issue are listed below:

1. Lessened Interfacial Adhesion: The interfacial adhesion between the nylon matrix and the reinforcement or filler can be lessened when the proportion of the toughening agent is raised. As a result, the material may develop weak areas and imperfections that make the strip more likely to break.

2. Insufficient Dispersion: Toughening chemicals can build aggregates and clusters in the nylon matrix, which can lessen the efficiency of the reinforcement and lead to voids or weak borders that can lead to strip breaking.

3. Polymer Chain Coupling: Toughening compounds can interact with the polymer chains in nylon and change the molecular structure of the substance. The material's crystallinity may be reduced as a result, which may reduce its stiffness and strength and increase the likelihood that it will shatter under stress.

4. Insufficient Toughening Effect: The material may not become harder but more brittle in some circumstances, which might raise the danger of horizontal breaking. This depends on the kind and concentration of the toughening agent.

Improvements to Reinforced Nylon's Toughness

Manufacturers have a variety of options for addressing the issue of breaking strip in reinforced nylon with a high amount of toughening agent, including:

1. Modification of the Toughening Agent: Manufacturers can balance the material's reinforcing and toughening effects by choosing the right type and concentration of toughening agent. For instance, adding core-shell rubber particles to nylon can increase its impact resistance without reducing its strength.

2. Improving Processing Conditions: Manufacturers can improve the production process by modifying the melt's flow rate, temperature, and pressure in order to create a uniform dispersion of the toughening agent in the nylon matrix. By doing so, flaws may be formed less often and the material's resistance to strip breaking can be increased.

3. Silane or other coupling agents can be used to modify the surface of reinforcing agents to improve their wettability and adherence to the nylon matrix. This can make the material more durable and stop strip breaking.

4. Use of Additives: Other additives, including as antioxidants, UV stabilizers, and lubricants, can significantly boost the performance of reinforced nylon by shielding it from chemical and environmental influences, lowering friction and wear, and improving processing efficiency.


In conclusion, reinforced nylon with a high toughening agent content may be prone to strip breaking for a variety of reasons, including decreased interfacial adhesion, insufficient dispersion, polymer chain coupling, and insufficient toughening action. Manufacturers can increase the toughness and resistance to strip breaking of reinforced nylon without sacrificing its other crucial mechanical properties by choosing the right modification and processing conditions, optimizing the surface treatment of reinforcing agents, and using other additives.


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