冬季天气建议:寒冷天气对聚氨酯、硅胶、环氧树脂和乳胶基材料的影响

Cold weather will not permanently harm urethane, silicone or epoxy materials. It can cause these materials to thicken and separate. If you try to use the material while it is too cold, it will not cure.

If you suspect your materials are cold, allow them to reach room temperature (at least 73°F / 23°C) in the containers before opening. Depending on how long the materials were exposed to the cold, it can take several days to bring them up to 73°F (23°C). Pro Tip: During cold winter months, bear in mind how long material may have been sitting in an unheated delivery truck.

Once the material has reached room temperature…

  • Urethane Rubber – Open Part A & B containers and mix thoroughly (3 minutes) with a clean flat edge stirring paddle (different sticks for each Part to prevent cross contamination) before dispensing into a mixing container.
  • Silicone Rubber – Open Part A and mix thoroughly (3 minutes) with a clean flat edge stirring paddle before dispensing into a mixing container. For 100A:10B by weight systems (e.g. Mold Max™, Smooth-Sil™ series) vigorously shake the Part B container. For 1A:1B by volume systems (e.g. OOMOO™, Mold Star™, Dragon Skin™ series), open Part B and mix thoroughly (3 minutes) with a clean flat edge stirring paddle before dispensing.
  • Epoxy – follow the standard pre-mix instructions located on the product's technical bulletin.
  • Urethane Resin – Vigorously shake both Part A & B containers before dispensing. Urethane systems with fillers (e.g. Smooth-Cast™ 385, TASK™ 18, Feather Lite™) may need to be opened and thoroughly mixed (3 minutes) with a clean flat edge stirring paddle (different sticks for each Part to prevent cross contamination) before dispensing into a mixing container.

Note for Simpact 60A and 85A: These materials may congeal if exposed to cold temperatures. To reconstitute, Part A & B must be heated to 90°F (33°C) then thoroughly mixed to an even consistency.

Latex Based Products

Forton™ and duoMatrix™ acrylic latex polymer systems cannot be allowed to freeze. If they freeze, they are permanently unusable.

Keep it off the Concrete Floor

Store products off of cold concrete floors. Even in a heated shop, concrete will cool 5-gallon pails or even gallon buckets left in cardboard boxes to a point the material may cure slowly or not work at all. Store containers off the concrete floor on a pallet, foam board, etc.

免责声明
这些FAQ文章作为参考,并提供模具制造和浇注过程中遇到问题的可能解决方案。由最终用户确定任何特定应用的适用性。我们不做保证。使用任何材料前参考所提供的技术公告(TB)和安全数据表(SDS)。在大范围使用前,建议小范围试验确定任何建议的适用性。