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The phenomenon of plastic products cracking can be caused by many reasons, including: heat stress, inadequate wall thickness, overmodulation, weak temperature resistance material, uneven force on the product surface, and insufficient toughness of the material.
1. Heat Stress: High temperatures can cause thermoplastic materials to expand, which can cause excessive stress to be applied to the plastic product and eventually lead to cracking. Thus, it is important to ensure that thermoplastic materials are not exposed to high temperatures during storage and handling.
2. Inadequate Wall Thickness: Due to the need for mass production, plastic products often have thin walls in order to reduce cost. However, the thin walls of plastic products can be easily affected by external forces and ultimately lead to cracking. Therefore, it is important to ensure that the product has sufficient wall thickness in order to withstand external forces.
3. Overmodulation: Overmodulation is a process in which the walls of a plastic product are stretched beyond their maximum rating. When overmodulation occurs, the product will become brittle and may easily crack. Therefore, it is important to ensure that plastic products are not overmodulated during production.
4. Weak Temperature Resistance Material: Some thermoplastic materials used in the production of plastic products have poor temperature resistance. As a result, they can easily crack when exposed to high temperatures. Therefore, it is important to choose the right thermoplastic material in order to ensure that the product will not be prone to cracking under high temperatures.
5. Uneven Force on the Product Surface: The plastic product may be subject to uneven forces during storage and handling, which can lead to cracking. Therefore, it is important to ensure that the product is stored and handled in a way that avoids uneven forces on its surface.
6. Insufficient Toughness of the Material: Some thermoplastic materials are not tough enough, and thus can easily crack under external stress. Therefore, it is important to ensure that the material used in the production of plastic products is tough enough to resist cracking.
To minimize the likelihood that plastic products will crack, it is important to ensure that the thermoplastic materials used in the production process meet standards and that the products are not subject to excessive force during storage and handling. Additionally, adequate wall thickness and toughness of the material must be chosen in order to maximize the resistance of plastic products to cracking.