High-purity organic silicon compounds, silane coupling agents, and high-performance elastomers.
In the era of hyper-electrification, smart power distribution, and high-frequency communication systems, insulating liquid silicone rubber (LSR) has emerged as an indispensable class of dielectric materials. Characterized by a backbone of alternating silicon and oxygen atoms (Si-O-Si), liquid silicone rubbers exhibit exceptional thermal stability, excellent dielectric properties, mechanical resilience under environmental stress, and superior resistance to ultraviolet radiation, corona discharges, and ozone erosion.
As a leading manufacturer of advanced silicone solutions, Shandong Boctok Chemical Co. has been at the forefront of synthesising high-purity organosilicon derivatives since 2012. Our expertise covers deep chemical processing and specialized application engineering, resulting in a recorded global sales volume of US$280 million in 2023. By leveraging cutting-edge raw material flows and rigorous testing methodologies, we supply global tiers of electrical infrastructure, automotive manufacturers, and electronic system designers.
The global transition toward high-voltage direct current (HVDC) transmission lines and rapid electric vehicle (EV) charging stations demands a corresponding evolution in insulating elastomer technologies. The core developmental focus is shifting towards three main dimensions:
Traditional insulating silicone materials act as barriers to both electricity and heat. Modern research focuses on hybrid formulations that combine high dielectric breakdown voltage (>25 kV/mm) with enhanced thermal conductivity (up to 3.0 W/mK) through the controlled incorporation of micro- or nano-sized ceramic fillers like alumina (Al2O3) or boron nitride (BN).
For outdoor high-voltage insulators, tracking index resistance (IEC 60587 class 1A 4.5kV or higher) is non-negotiable. Manufacturers are refining hydrophobic migration properties, ensuring that silicone fluids continuously migrate to the surface to repel moisture, preventing leakage currents and subsequent dry-band arcing.
Particularly for aerospace, medical, and semiconductor packaging, reducing volatile organic compounds (VOCs) and cyclic siloxanes (D4, D5, D6) is vital. Advanced post-curing and raw monomer purification processes allow Boctok to yield ultra-clean, low-outgassing insulating elastomers.
Mapping Boctok's product lines to critical heavy industries, electronics, and agricultural technologies.
Boctok operates an integrated manufacturing structure to deliver consistent, scalable chemical intermediates to global supply chains:
Covers twelve series of silane coupling agents and crosslinkers (aminosilane, methacrylate silane, epoxy silane, vinyl silane, mercaptosilane, alkyl silane, ethyl silicate, chlorosilane, silane isocyanates, phenyl silane, ureidosilane, and serosilane). In addition, we manufacture premium silicone oil, silicone resin, and silicone rubbers (such as RTV methyl silicone rubber, 110 methyl vinyl silicone rubber, and 120 methyl phenyl rubber).
We invest directly in key hydrocarbon resin facilities across China (Zibo, Fushun, and Nanjing), utilizing reliable monomers from SINOPEC and PetroChina. Our product suite includes C9 hydrogenated resins, C5 hydrocarbon resins, C5/C9 modified resins, and dicyclopentadiene (DCPD) for premium adhesives and coatings.
Supplying active ingredients, stabilizers, and formulation additives for high-efficacy fungicides, pesticides, insecticides, seed treatments, and plant growth regulators across major agricultural zones.
How we scale production to secure supply reliability for Fortune 500 companies.
We recently invested US$65 million to construct a state-of-the-art manufacturing center in Bohai Industrial Park, Shouguang City, Shandong Province. This chemical industrial park features comprehensive infrastructure, allowing us to expand our silane coupling agent production lines to a massive capacity.
Our Shouguang facility operates 6 automated Distributed Control System (DCS) production lines along with robust Safety Instrumented Systems (SIS). This ensures continuous control of process parameters, precise catalytic feeds, and safety standards conforming to global protocols.
With a yearly output of 30,000 metric tons of silane coupling agents, crosslinkers, and specialized silicone polymers, Boctok provides scalable guarantees to global distributors and large-scale industrial contract clients.
| Parameter Focus | Insulating LSR Standard Requirements | Boctok Performance Index | Industrial Application Impact |
|---|---|---|---|
| Dielectric Strength | ≥ 18 kV/mm | 23 - 28 kV/mm | High-voltage cable terminations, joint insulations |
| Volume Resistivity | ≥ 1.0 × 1014 Ω·cm | 1.5 × 1015 Ω·cm | Electrical leakage prevention in moist environments |
| Tensile Strength | ≥ 6.5 MPa | 8.5 MPa | Durability during installation and thermal cycling |
| Flammability Rating | UL 94 V-1 | UL 94 V-0 (Halogen-Free) | Aviation, EV automotive battery casing, electronics |
Engineered compounds and polymer classes configured to specific industrial environments.
High-voltage busbar coating, connector seals, wire wraps, and self-lubricating LSR components for dynamic mechanical joints in automated assemblies.
Silicone sealants and casting resins protect power generators and electrical bus systems from offshore humidity and ozone corrosion.
Precision liquid injection molding (LIM) parts, gaskets, keypad membranes, and structural silicone adhesives for portable gadgets and microelectronics.
Self-lubricating sealants, high-performance structural adhesives, and protective weatherproofing coatings for civil engineering and structural glass facades.
Boctok operates specialized support nodes for target economies. Our dedicated operations team optimizes transactions and logistics for key markets, including a strong presence serving the Russian market alongside Europe, the Americas, and APAC.
Our logistics network includes strategic container depots and regional transit warehouses, minimizing standard lead times. By coupling ISO9001 compliance standards with ISO14001 environmental frameworks, we ensure that every batch of silane coupling agent, silicone fluid, or rubber polymer arrives with fully traceable documentation.
Pioneering new polymer architectures to address 5G infrastructure, electric powertrains, and environmental criteria.
We are shifting our manufacturing core from peroxide-cured system components to two-part, platinum-catalyzed addition cure liquid silicone rubbers (A+B systems). Platinum cure pathways eliminate toxic crosslinking byproducts (such as organic acids or peroxides), producing materials with high tear strength, superior dimensional stability, and zero shrinkage.
Furthermore, this addition-cure mechanism prevents the material from degrading under steam or high thermal loads, making it ideal for wire insulation in steam-rich industrial environments.
In response to EU REACH and other international environmental restrictions, Boctok’s R&D focus covers the reduction of low-molecular-weight siloxane impurities. By deploying advanced vacuum stripping columns within our DCS-controlled system, we reduce cyclic siloxanes (D4-D6) to below 0.1% weight, ensuring compliance with global specifications.
Our state-of-the-art environmental systems also process and clean waste gas and wastewater streams locally, preserving regional ecosystems.
Technical parameters, application guidance, and procurement procedures answered by our chemical engineering team.
Explore our specialized silicone resins, crosslinkers, and high-performance resins.
Boctok Chemical