107 Silicone Rubber Raw Material 5000 cst CAS 70131-67-8 Low Viscosity Base Polymer
107 Silicone Rubber Raw Material 5000 cst is low‑viscosity hydroxyl‑terminated polydimethylsiloxane. Under organotin catalyst, it carries out condensation cross‑linking reaction with silane cross‑linker at room temperature to form elastic silicone elastomer. Thanks to low viscosity, it brings good fluidity and processing performance during compounding. The cured silicone has outstanding weather resistance, ozone resistance and dielectric property. It is widely used for low modulus sealant, adhes
Product Overview
107 Silicone Rubber Raw Material 5000 cst CAS 70131‑67‑8 is linear silanol‑terminated polydimethylsiloxane with low molecular weight and low viscosity. Reactive hydroxyl groups locate at both ends of molecular chain. When compounded with reinforcing fillers, cross‑linking agents and catalyst, it cures into flexible silicone rubber through room‑temperature condensation reaction. Its low‑viscosity characteristic improves mixing efficiency and filler dispersion, perfectly matching formula requirements for flowable RTV silicone systems.
Key Features
- Low viscosity 5000 cst, excellent fluidity for easy mixing and processing
- Reactive hydroxyl end groups for stable and controllable room‑temperature condensation curing
- Superior filler wetting capacity, promote uniform dispersion of silica and other additives
- Cured elastomer exhibits good weather resistance, ozone resistance and electrical insulation performance
- Stable batch consistency, suitable for mass industrial production of flowable silicone compounds
Main Applications
‑ Low viscosity base polymer for two‑component RTV silicone formulation ‑ Raw material for low‑modulus silicone sealant and adhesive ‑ Electronic potting and encapsulation silicone compounding ‑ General‑purpose condensation‑cure RTV silicone production ‑ Flow‑required silicone system custom formulation
Usage Recommendation
Complete batching, feeding and mixing operations under low‑humidity environment. Mix 107 silicone raw material, reinforcing filler, cross‑linking agent and catalyst strictly according to production formula. Avoid moisture contamination, moisture will cause bubbles, surface tackiness and incomplete vulcanization. Adjust filler dosage to modify viscosity, hardness and mechanical performance of finished silicone products.
Storage & Package
Store in cool, dry and hermetically sealed warehouse. Keep away from humid air and water vapor to prevent premature cross‑linking. Standard iron drum packaging. Tighten drum lid immediately after partial material discharge. Container opening and material handling should be performed under dry working conditions.
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