107 Silicone Rubber Base 80000 cst CAS 70131-67-8 High Viscosity for High Strength Mold
107 Silicone Rubber Base 80000 cst is hydroxyl‑terminated polydimethylsiloxane with CAS 70131‑67‑8. This high‑viscosity 107 base polymer is designed for high‑strength mold manufacturing. It shows outstanding compatibility with reinforcing silica fillers. After cross‑linking with cross‑linker and organotin catalyst, finished silicone mold achieves high mechanical strength, good elasticity and fine detail reproduction, widely used for craft casting, industrial duplication and high‑load mould produ
Product Overview
107 Silicone Rubber Base 80000 cst belongs to hydroxyl‑terminated polydimethylsiloxane series, CAS 70131‑67‑8. As high‑viscosity base polymer for condensation‑cure mold‑making silicone, it features precisely controlled hydroxyl value and stable 80000 cst viscosity. When compounded with reinforcing fillers, it builds robust cross‑linked network for high‑strength flexible molds. Strict batch testing guarantees stable performance for industrial mould silicone mass production.
Key Features
- 80000 cst high viscosity tailored for high strength mold‑making silicone
- Uniform hydroxyl end groups for stable and controllable condensation curing
- Superior wetting and dispersion capacity for reinforcing silica fillers
- Cured mold exhibits high tensile strength and excellent tear resistance
- Good elastic recovery, suitable for frequent demoulding cycles
- Accurate replication of fine surface textures and patterns
- Good compatibility with conventional silane cross‑linkers and organotin catalysts
- Low volatile content, reliable batch‑to‑batch consistency
Main Applications
- High‑strength condensation‑cure mold‑making silicone compound
- Art craft, sculpture and decorative ornament reproduction molds
- Resin, gypsum and wax casting flexible moulds
- Industrial prototype duplication and tooling molds
- Two‑component RTV‑2 silicone rubber for heavy‑duty mould application
- Custom high‑strength flexible mould formulations
Processing Suggestions
Complete feeding, kneading and mixing operations under strictly moisture‑free environment. Combine with reinforcing silica fillers, silane cross‑linking agent and organotin catalyst. Adjust filler loading according to target hardness, tear strength and shrinkage requirement. Avoid moisture contamination during whole production process to prevent incomplete curing or surface tackiness.
Storage & Packing
Packed in sealed 200kg iron drum. Store in cool, dry and ventilated warehouse. Keep drum tightly sealed. Keep away from humidity, high temperature and direct sunlight. Reseal drum immediately after partial material discharge. Proper storage protects polymer reactivity and ensures valid shelf‑life.
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