{ "id": 4795, "date": "2021-12-06T11:13:31", "date_gmt": "2021-12-06T11:13:31", "guid": { "rendered": "https:\/\/scgypsum.com\/?post_type=product&p=4795" }, "modified": "2025-08-19T01:07:04", "modified_gmt": "2025-08-18T19:07:04", "slug": "gelcoat-fiberglass-gelcoat", "status": "publish", "type": "product", "link": "https:\/\/www.sc.com.bd\/en\/product\/gelcoat-fiberglass-gelcoat\/", "title": { "rendered": "Gelcoat, Fiberglass Gelcoat" }, "content": { "rendered": "

Category<\/strong>: Gelcoat<\/p>\n

Usage:<\/strong> Manufacture of high-quality surface lamination FRP composite tooling.<\/p>\n

Description<\/strong>: Gel coat features good strength, hardness, tenacity, low shrinkage,
\nexcellent waterproof, heat resistance, wear resistance, good weather ability, and
\nfinished FRP product with good transparency, suitable for hand layup process FRP
\nmodel surface protection layer. Gelcoat is a resin system that is filled with colorants and
\nthickening agents and applied to a mold surface to form the cosmetic and weathering
\ncoating of a composite part. Gel coat is typically the first layer of a part to be applied.
\nCorrect application of gelcoat is critical to get the optimum performance from it.<\/p>\n

Gelcoats are based on a thermoset resin that requires an initiator and proper
\ntemperatures to cure thoroughly. Incomplete cure will result in poor durability of the
\ngelcoat. This is often witnessed as premature fading, dulling of the gelcoat surface, or
\nchalking. There are 3 variables that affect proper cure: temperature, film thickness, and
\ninitiator level.<\/p>\n

Temperatures should be between 60-80 degrees F. with an optimum
\nrange being between 70-75F. We like to use an infrared thermometer to check the
\ntemperature of the mold surface and gelcoat. We use the infrared and a wall
\nthermometer to check the ambient temperature of the workspace.<\/p>\n

Keep in mind that molds stored in areas that are not climate controlled may not reach room temperature
\nfor quite some time. Gelcoat should be initiated (catalyzed) to set up to the point that
\nyou can touch it with a glove and not have it come up on your finger in 45-60 minutes
\nfrom application.<\/p>\n

Generally speaking and depending on the temperature a catalyst ratio
\nof between 1.2% to 3% will give you the proper cure rate. At 77F 1.8% MEKP will
\nprovide a gel time of 10-17 minutes. Keeping good notes will help you build a database
\nof initiator levels for temperatures that you encounter frequently. Gelcoat that is
\nover-initiated can result in excessive shrinking and premature release from the mold.<\/p>\n

Tags:<\/strong> Gelcoat Price in Dhaka Bangladesh, Polyester
\nresin, FRP, Hardener, MEKP, Catalyst, Fiberglass, Mold Making.<\/p>\n

Video link:<\/strong> https:\/\/youtu.be\/EFz7B705o2Y<\/a><\/p>", "protected": false }, "excerpt": { "rendered": "