Molding Process
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Insufficient Chemical Resistance of PCTG Products
Problem Phenomenon
PCTG products swell or crack after contacting certain chemicals.
Cause Analysis
Although PCTG has better chemical resistance than PETG, it is still sensitive to certain solvents (such as ketones, aromatic hydrocarbons, etc.), and is more prone to cracking in the presence of stress.
Solution
Evaluate the chemical exposure risk of the use environment; anneal the products to reduce stress; select more chemical-resistant materials when necessary.
Key Takeaway
The chemical resistance of PCTG is good but limited.
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