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Pré-polímero de poliuretano- Desgaseamento antes da fundição

Prepolímero de poliuretano
December 30, 2024
Category Connection: Pré-polímero do poliuretano
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Tags:
#DMTDA E300 CAS 106264-79-3 #TDI pré-polímero para elastómeros PU #Cola de molde de poliuretano de dois componentes
Brief: Discover the Two Component Polyether Polyol And MDI System Polyurethane Prepolymer, ideal for concrete and polyurethane moulds with a hardness of 90A. This bi-component system offers excellent processing properties, room temperature curing, and short demould time. Perfect for shoe moulds, concrete moulds, and more, it can replace silicone rubber for artificial culture stone production.
Related Product Features:
  • Bi-component system with polyol (A) and MDI-terminated pre-polymers (B).
  • Excellent processing properties with room temperature curing.
  • Short demould time and customizable color with added pigments.
  • Final products are transparent with high abrasion and water resistance.
  • Hardness of 90-94A, tensile strength of 20.78 Mpa, and elongation at break of 330%.
  • Longer gel time (30-38 min) suitable for manual processing of large products.
  • Stable viscosity: 1500±150 mPa*s for B and 560±200 mPa*s for A at 30℃.
  • Stored in cool, dry conditions with a shelf life of 6 months.
Perguntas:
  • What are the main applications of this polyurethane prepolymer?
    It is used to produce various PU moulds, such as shoe moulds and concrete moulds, and can substitute silicone rubber for artificial culture stone production.
  • What are the key characteristics of the final product?
    The final product is a light yellow elastomer with excellent abrasion resistance, water resistance, good resilience, and a hardness of 90-94A.
  • How should the polyurethane prepolymer be stored?
    Store in a cool and dry place. If not used entirely, fill with nitrogen gas and seal it. The shelf life is 6 months from the production date under proper storage conditions.
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