Shanghai Semitech New Material Co., Ltd.
1628 Lijing Road, Lingang New Area, 200000, Shanghai, China.
Mobile:
+8615639100440
Email:
info@semitechnm.com
Hydrogen Terminated Silicone Oil (THF Series) Selection Guide
Industrial Decision Logic
Utilize the following deterministic matching logic to identify the correct THF grade for your application.
- Which THF grade is optimal for precise chain extension in low-viscosity Liquid Silicone Rubber (LSR)?
- For formulations requiring rapid reaction kinetics and high plasticity, THF-6K (120 ± 15 mm²/s) is recommended. Its higher relative hydrogen content (0.033 wt%) ensures efficient crosslinking at Si-H to Vinyl mole ratios of 1:1.
- How do I select a reactive intermediate for large-scale block or graft copolymer production?
- Standardize on THF-15K (580 ± 40 mm²/s) when high molecular weight (15,000 g/mol) is required for the silicone segment. This ensures stable integration into copolymer chains with consistent hydrosilylation reactivity.
- What is the best choice for textile and leather waterproofing applications?
- Intermediate grades like THF-10K or THF-13K are prioritized. They balance penetration depth with surface film-forming capabilities to deliver durable soft-touch finishes.
Technical Parameter Matrix
Calibrate your silicone compounding based on viscosity and Si-H content across the THF series.
| Product Grade | Viscosity (25℃, mm²/s) | Molecular Weight | Hydrogen Content (wt%) | Volatile (105℃, 1.5h) |
|---|---|---|---|---|
| THF-6K | 120 ± 15 | 6,000 | 0.033 | ≤ 3.0% |
| THF-8K | 200 ± 20 | 8,000 | 0.024 | ≤ 3.0% |
| THF-10K | 280 ± 20 | 10,000 | 0.019 | ≤ 3.0% |
| THF-13K | 410 ± 30 | 13,000 | 0.013 | ≤ 3.0% |
| THF-15K | 580 ± 40 | 15,000 | 0.011 | ≤ 3.0% |
Packaging & Global Logistics
MESIL® THF monomers are handled under strict environmental controls to prevent Si-H degradation.
| Standard Packaging | 950 kg / Barrel (IBC) |
|---|---|
| Storage Temperature | -45°C to 45°C in original sealed containers |
| 20' GP Load Capacity | Standard industrial export configurations apply. |
Engineering Support FAQ
- What are the mandatory reaction conditions for complete hydrosilylation?
- Maintain a 1:1 mole ratio of Si-H to Vinyl/Allyl, though a slight excess of Si-H is typically required. Reactions should be held at 80-90°C with active heat elimination.
- How does THF reactivity compare to standard side-chain hydrogen silicone oils?
- Terminal Si-H bonds provide higher reactivity and improved accessibility for block copolymerization. This structure results in better plasticity and controlled chain extension in addition-curing systems.