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The delamination problem of pure polyester curing agent in resin products

Release time:2025-04-21

When curing resin products, it is often necessary to add fillers to the resin. After stirring evenly and letting it stand for a period of time, a layer of transparent liquid will appear on the upper layer of the mixing bucket, which is called layering phenomenon. When using pure polyester curing agent for curing, the following method can be used to avoid this situation.


1. During the production process of resin, a large amount of substances that do not crosslink well with styrene monomers are used, which can easily cause resin delamination. Therefore, attention should be paid to the dosage of these substances during the production process.


2. Adding a large amount of diluents such as styrene to reduce the viscosity of the resin can also easily cause delamination. This requires us to control the amount of diluent reasonably to avoid stratification.


3. The addition of mineral oil, engine oil, etc. is the main cause of delamination. So it is necessary to strictly control the amount of oil added, generally not exceeding 0.5% of the resin amount, and add it 15-20 minutes before receiving the slurry.


4. The moisture in stone powder can directly cause resin delamination. The extremely humid stone powder stirred causes a large amount of separation of styrene from the resin, and at the same time, bubbles constantly emerge from the mixing bucket. At this time, it is necessary to replace the dry stone powder in a timely manner. The slurry should be processed in a timely manner, otherwise it will become very viscous and unusable after a period of time.


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