MQ Silicone Resin for Silicone Rubber Reinforcement CAS 67763‑19‑3 is M‑Q structured silicone resin manufactured by co‑hydrolysis and polycondensation of methyl silane and tetrafunctional silicate monomers. With carefully controlled M/Q molar ratio, this resin exhibits outstanding compatibility with linear silicone gum. It serves as non‑particulate reinforcing filler for HTV high‑temperature vulcanized, LSR liquid addition‑cure and RTV room‑temperature vulcanized silicone rubber, enhancing mecha

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MQ Silicone Resin for Silicone Rubber Reinforcement CAS 67763‑19‑3, High‑Strength Reinforcing Filler for HTV LSR & RTV Silicone

This dedicated rubber‑reinforcing MQ silicone resin is produced by controlled co‑hydrolysis and polycondensation of methyl‑substituted silane and tetraalkoxysilane raw materials. The molecular framework consists of monofunctional M‑units and tetrafunctional Q‑units, forming compact three‑dimensional spherical macromolecules. The M‑to‑Q molar ratio is precisely adjusted during synthesis to optimize compatibility with different silicone polymer matrices, covering high‑viscosity solid silicone gum for HTV, low‑viscosity liquid base polymer for LSR and hydroxyl‑terminated silicone polymers for RTV systems.

Unlike conventional silica powder reinforcement, this MQ silicone resin achieves reinforcement mainly through intermolecular siloxane‑siloxane physical interactions between rigid resin domains and flexible linear silicone chains, instead of purely physical filling. When uniformly dispersed inside the silicone rubber matrix, the distributed MQ resin micro‑domains build numerous physical cross‑linking sites within the rubber network. These physical cross‑links effectively transmit external stress and restrict the slippage of silicone molecular chains under external force.

For HTV high‑temperature vulcanized silicone rubber, this reinforcing MQ resin raises tensile strength and tear resistance, reduces permanent compression‑set value, and improves dimensional stability after long‑term thermal ageing. It helps to minimize the shrinkage of molded HTV silicone parts during high‑temperature post‑curing.

For LSR liquid silicone rubber, the resin maintains favorable fluidity of uncured LSR compound, which is essential for high‑speed injection molding. After platinum‑catalyzed hydrosilylation curing, it delivers higher hardness and modulus without severe loss of rubber elasticity, suitable for manufacturing precision thin‑wall silicone molded components.

For RTV room‑temperature vulcanized silicone rubber, including one‑component and two‑component condensation‑cure systems, this MQ reinforcing resin boosts cohesive strength of the cured rubber, enhances tear performance, and improves anti‑sagging property during curing of thick‑section RTV silicone parts.

The resin shows good solubility in aromatic hydrocarbon solvents and silicone fluids. Special attention should be paid for LSR addition‑cure formulas. Sulfur‑containing and nitrogen‑containing contaminants must be excluded during compounding, to avoid poisoning platinum curing catalyst and generating incomplete curing defects.

During rubber compounding, sufficient high‑shear mixing is required to achieve homogeneous dispersion of MQ resin within silicone gum. Inadequate mixing leads to localized resin agglomeration, which creates hard speckles on finished rubber surfaces and causes inconsistent mechanical performance across different batches. Formulation loading should be optimized; excessive dosage will increase compound hardness and induce unwanted brittleness, while insufficient addition cannot reach targeted reinforcing effect.

The product requires hermetically sealed storage under cool and dry conditions. Avoid prolonged exposure to humid atmosphere. Prevent cross‑contamination with functional silicone additives during material handling. This specialized MQ silicone resin is an essential high‑strength reinforcing modifying raw material for HTV, LSR and RTV silicone rubber manufacturing

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MQ Silicone Resin for Silicone Rubber Reinforcement CAS 67763-19-3, High-Strength Reinforcing Filler for HTV LSR & RTV Silicone

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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.