1. What is Polyester Resin to Catalyst Ratio?

The polyester resin to catalyst ratio determines the proper amount of catalyst needed to cure a specific amount of resin. For wood applications, common ratios range from 100:1 to 100:2.5 depending on temperature and resin type.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Resin \) — Amount of resin in parts
• \( Ratio \) — Resin to catalyst ratio (e.g., 100 for 100:1 ratio)
• \( Catalyst \) — Resulting catalyst amount in parts

Explanation: The formula calculates the precise amount of catalyst needed based on the resin amount and desired ratio.

3. Importance of Proper Ratio

Details: Using the correct resin to catalyst ratio is crucial for proper curing. Too little catalyst results in incomplete curing, while too much can cause overheating, cracking, or brittleness.

4. Using the Calculator

Tips: Enter the amount of resin you plan to use and the recommended ratio for your specific product. Always follow manufacturer instructions for optimal results.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical ratio for polyester resin on wood?
A: Most polyester resins use a 100:1 to 100:2.5 ratio (resin:catalyst), but always check the manufacturer's recommendations.

Q2: Does temperature affect the ratio?
A: Yes, in colder conditions you may need slightly more catalyst, while in warmer conditions you may need less.

Q3: What happens if I use too much catalyst?
A: Excess catalyst can cause the resin to cure too quickly, potentially leading to overheating, cracking, or a brittle finish.

Q4: Can I use this calculator for different measurement units?
A: Yes, as long as you use consistent units for both resin and catalyst (e.g., ounces, grams, or parts).

Q5: How accurate do I need to be with measurements?
A: Precision is important. Use accurate measuring tools, especially for small amounts of catalyst.