Silanol Terminated PDMS 200000 cst CAS 70131-67-8 for High Tear Strength Mold
Silanol Terminated PDMS 200000 cst is silanol‑terminated polydimethylsiloxane, CAS 70131‑67‑8. This ultra‑high viscosity base polymer is specially developed for high‑tear‑strength condensation‑cure mold‑making silicone. It exhibits excellent compatibility with high‑performance reinforcing silica fillers. After cross‑linking with silane cross‑linker and organotin catalyst, the cured mold obtains superior tear resistance, high elasticity and low linear shrinkage. It is widely used for industrial d
Product Overview
Silanol Terminated PDMS 200000 cst belongs to silanol‑terminated polydimethylsiloxane, also known as 107 silicone base polymer, CAS 70131‑67‑8. This ultra‑high viscosity condensation‑cure base material is designed for manufacturing high tear strength RTV‑2 mold rubber. Viscosity and silanol content are strictly controlled batch‑by‑batch. When compounded with reinforcing silica fillers, it forms robust cross‑linking network to realize excellent mechanical performance. Strict quality inspection guarantees stable output for industrial mold silicone manufacturers.
Key Features
- 200000 cst ultra‑high viscosity for high tear strength mold‑making silicone
- Uniform silanol end‑groups for stable and controllable condensation curing
- Superior wetting and dispersion for high‑loading reinforcing silica fillers
- Cured silicone mold delivers outstanding tear resistance and high elasticity
- Low linear shrinkage after full curing for high‑precision pattern replication
- Suitable for heavy‑load use and repeated demoulding cycles
- Good reproduction of complex textures and fine surface details
- Compatible with conventional silane cross‑linkers and organotin catalysts
- Low volatile content, reliable batch‑to‑batch consistency
Main Applications
- High tear strength two‑component RTV‑2 condensation cure mold rubber
- Large‑size industrial duplication and casting molds
- Molds for resin, gypsum, concrete and wax casting
- Craft artwork and sculpture reproduction flexible moulds
- Mould products requiring long‑term repeated demoulding
- Custom high‑strength flexible silicone mold formulations
Processing Suggestions
All feeding, kneading and mixing operations shall be performed under moisture‑free environment. Mix with reinforcing silica fillers, silane cross‑linking agent and matched organotin catalyst. Adjust filler loading according to target tear strength, hardness and shrinkage requirement. Strictly avoid moisture contamination in the whole production process to prevent incomplete curing or surface tacky issues.
Storage & Packing
Packed in sealed 200kg iron drum. Store in cool, dry and ventilated warehouse. Keep drum tightly sealed. Protect from moisture, high temperature and direct sunlight. Reseal drum immediately after partial material discharge. Proper storage preserves polymer reactivity and ensures valid shelf‑life.
Previous : 107 Silicone Polymer 100000 cst CAS 70131-67-8 for Insulating Glass Sealant
Next : OH Polymer 107 300000 cst CAS 70131-67-8 for Concrete Stamp Mold Rubber
Copy product links
Long by picture save/share
Add Successfully
Add Successfully
Jishengya Technology
Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.
点击右上角
分享给朋友吧
Copyright © 2005-2026 Shenzhen Jishengya Technology Co., Ltd. All Rights Reserved.
