Causes of carbon fiber pultrusion die clamping
2024-10-14
The main reason for carbon fiber pultrusion die clamping
The main reasons for carbon fiber pultrusion die clamping are as follows:
The preheating zone temperature is too high: When the preheating zone temperature is too high, the resin is prematurely cured, resulting in increased viscosity, increased traction, prone to local mold sticking.
Insufficient preheating: If the temperature in the preheating zone is too low, the viscosity of the resin in the gel zone will increase, resulting in difficulty in demoulding and eventually blocking the mold.
Resin viscosity problem: resin viscosity is too high or too low will affect the infiltration effect, resulting in fiber and resin combination is not tight, easy to stay in the mold.
Improper surface treatment: The surface of the mold is stained with mold release agent or other contaminants, causing the mold to bond with the product, causing the mold to be stuck.
Improper temperature control: Improper temperature control of the mold leads to a mismatch between the curing rate and the traction speed, resulting in mold clamping.
Solution to carbon fiber pultrusion die clamping method
For the above reasons, the following measures can be taken to solve the problem of carbon fiber pultrusion die clamping:
Adjust the temperature of the preheating zone: Ensure that the temperature of the preheating zone is moderate and avoid being too high or too low to prevent premature curing or excessive viscosity of the resin.
Optimize the resin formula: adjust the ratio of resin and curing agent to ensure that the resin viscosity is moderate, easy to soak and mold release.
Strengthen surface treatment: Ensure that the surface of the mold is clean and free of mold release agents or other contaminants, and replace or clean the mold if necessary.
Precise temperature control: through precise temperature control, to ensure that the curing rate and traction speed match, to avoid temperature changes caused by cracks or mold.
Regular maintenance of the mold: regular inspection and maintenance of the mold to ensure that its surface is smooth and free of impurities, to avoid mold problems caused by mold card.
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