In the process of the continuous development of organic silicon materials towards functionalization and refinement, the design and content regulation of active groups in the molecular chain are the core elements determining the performance of downstream products such as emulsifiers, defoamers, modified silicone oils, and adductable silicone rubbers. The products launched by our company, low-hydrogen silicone oil 203, as a methyl polysiloxane containing active silicon hydride bonds, with its multi-specification hydrogen content options, stable physical and chemical indicators, and flexible reaction characteristics, demonstrate significant industrial application value in numerous application fields such as emulsifiers, defoamers, water-soluble silicone oils, and crosslinking agents for adductable silicone rubbers, providing key active intermediate raw materials for the development of organic silicon downstream products.


I. Core Physical and Chemical Characteristics of the Product


Product low-hydrogen silicone oil 203 is a colorless transparent liquid. At 25 degrees Celsius, its viscosity is 80 to 120 square millimeters per second, its density is 0.98 to 1.10 grams per cubic centimeter, and its refractive index is 1.390 to 1.410. This product offers four specifications with hydrogen contents of 0.18%, 0.36%, 0.50%, and 0.75%. Users can choose flexibly according to different application requirements. The product has no odor, and the active silicon hydride bonds contained in the molecular chain can react with chemical substances containing double bonds, hydroxyl groups, etc., under the action of a catalyst, forming stable carbon-silicon bonds and achieving crosslinking or modification; they can also react with compounds containing hydroxyl groups to introduce silicon hydride groups into the target molecule or the surface of the substrate.


In the polyurethane foam field, using the silicon hydride bonds of this product with allyl polyether for silicon hydride addition can synthesize polyether-modified silicone oil with excellent emulsifying effects, directly influencing the pore structure of polyurethane foam. In the preparation of defoamers, after emulsification or modification, this product can significantly reduce the surface tension of the system and quickly eliminate foam. In adductable silicone rubbers, this product acts as a crosslinking agent with vinyl silicone oil under platinum catalysis, forming a three-dimensional network structure.


II. Core Reaction Characteristics and Application Value


The application value of product low-hydrogen silicone oil 203 stems from its active silicon hydride bonds in the molecular chain. Under the action of platinum catalysts, these silicon hydride bonds can react with vinyl compounds to form stable carbon-silicon bonds, achieving crosslinking or modification; they can also react with compounds containing hydroxyl groups to introduce silicon hydride groups into the target molecule or the surface of the substrate.


In the polyurethane foam field, using the silicon hydride bonds of this product with allyl polyether for silicon hydride addition can synthesize polyether-modified silicone oil with excellent emulsifying effects, directly influencing the pore structure of polyurethane foam. In the preparation of defoamers, after emulsification or modification, this product can significantly reduce the surface tension of the system and quickly break foam. In adductable silicone rubbers, this product acts as a crosslinking agent with vinyl silicone oil under platinum catalysis, forming a three-dimensional network structure.


III. Main Application Areas


Product low-hydrogen silicone oil 203, with its multi-specification hydrogen content and active silicon hydride bonds, can play an important role in the following key application areas, specifically including:


1. Crosslinking agent for adductable silicone rubbers. This product is the core crosslinking component of adductable liquid silicone rubbers and high-temperature curing silicone rubbers. By selecting different hydrogen content specifications, it can precisely control the crosslink density of the cured rubber, thereby obtaining silicone rubber products with different hardness and mechanical properties, widely used in medical catheters, power insulators, electronic potting compounds, and infant products, etc.


2. Basic raw material for emulsifiers and foam stabilizers. By reacting with unsaturated compounds such as allyl polyether, this product can synthesize emulsifiers for polyurethane soft and hard foams, which are indispensable key additives in polyurethane foam plastic production, directly influencing the pore structure and hand feel of the foam.


3. Basic raw material for defoamers. After emulsification or other component compounding, this product can be made into efficient defoamers, used for foam control in textile printing and dyeing, papermaking, coatings, wastewater treatment, etc., with the characteristics of low dosage, fast defoaming, and long-lasting foam suppression, effectively eliminating harmful foam in water-based systems.


4. Synthesis raw material for water-soluble silicone oil and modified silicone oil. The product can be grafted with polyether chain segments through the silane-hydrogen addition reaction, resulting in water-soluble silicone oil with both hydrophilicity and softness. It is widely used in textile softening agents, daily chemical conditioning agents, etc. Additionally, it is also used in the synthesis of special modified silicone oils such as alkyl-modified silicone oil, amino-modified silicone oil, and epoxy-modified silicone oil.


V. Ceramic anti-fouling agent and waterproof hydrophobic treatment agent. In the anti-fouling treatment of ceramic tiles, this product can form a hydrophobic anti-fouling layer on the substrate surface, effectively preventing the penetration and adhesion of ink, dust, etc. It can also be used for hydrophobic anti-fouling treatment of glass, cement, leather, paper, wood, marble, etc., giving the substrate good waterproof and anti-fouling properties.


VI. Hydrophobic treatment of dry powder fire extinguishing agents. The product can be emulsified or directly added to dry powder fire extinguishing agents to give the dry powder particles good hydrophobicity and fluidity, preventing the fire extinguishing agent from absorbing moisture and forming lumps during storage, effectively extending the product's shelf life and improving the fire extinguishing efficiency.


IV. Usage suggestions and precautions


This product contains active silane-hydrogen bonds. It should avoid contact with alkaline substances and acid. In the presence of a catalyst, it can react vigorously with substances containing double bonds or hydroxyl groups. When designing the formula, the influence of its reaction activity on the stability of the system should be fully considered. The information, suggestions and data in the above text are all genuine and sincere. Given that the product's usage environment is beyond our control, it is recommended that users conduct thorough experiments before use to determine the optimal dosage and process conditions.


VII. Packaging specifications and storage conditions


The low-hydrogen silicone oil 203 is packaged in 200-liter plastic drums, with a net weight of 200 kilograms per drum. The packaging requires sealing and should be stored separately from oxidants, acids, edible chemical raw materials. Store it in a cool, ventilated warehouse, away from fire sources and heat sources. The temperature should not exceed 30 degrees Celsius. The lighting, ventilation and other facilities in the storage room should be of explosion-proof type. During handling, load and unload gently to prevent damage to the packaging and container. Transport as non-dangerous goods.


VIII. Quality guarantee and industrial chain value


The low-hydrogen silicone oil 203 in the production process has established a strict quality control system. Key indicators such as product appearance, viscosity, hydrogen content, density and refractive index are tested throughout the process to ensure consistency and reliability between batches. With the continuous growth of the demand for high-performance organic silicone products in downstream industries such as polyurethane, silicone rubber, textile printing and dyeing, and building material protection, the low-hydrogen silicone oil 203, with its series of different hydrogen contents, stable active silane-hydrogen bond content and wide reaction adaptability, is becoming a key active intermediate raw material in the development of downstream organic silicone functional materials, providing strong raw material support for promoting product innovation and technological upgrading in related industries.