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How should the emulsion be applied? Can it be poured directly onto the rubber sealing rings, or does it require a special process?

The emulsion used with rubber sealing rings (mostly silicone‑based emulsion for mold release, lubrication or protection, the most suitable type for this application) must NOT be applied directly as undiluted stock solution.

Main Raw Materials of Dimethyl Silicone Oil Defoamer

Dimethyl silicone oil defoamer consists of core active ingredients, auxiliary synergistic ingredients and carrier/emulsification system. Formulations vary slightly among different types (oil-based, emulsion, powder), but the core structure is consistent.

Corresponding Functions of Dimethyl Silicone Oil by Viscosity (30,000/50,000/100,000 cSt) - Classified by Core Application Fields

Core rule: The higher the viscosity, the greater the consistency, the denser the film formation, the stronger the lasting performance/mold release capacity, and the poorer the fluidity; 30,000 cSt is of medium-high consistency, balancing fluidity and basic long-acting performance; 50,000 cSt is the golden viscosity in this range, with the optimal comprehensive performance and the widest versatility; 100,000 cSt is of high consistency, focusing on strong mold release and ultra-long-acting film formation/lubrication, suitable for scenarios with high requirements for lasting performance.

What are the application fields and scenarios of dimethyl silicone oil with a viscosity of 30,000 to 100,000 cSt?

Dimethyl silicone oil with a viscosity of 30,000~100,000 cSt is the core commonly used grade of high-viscosity dimethyl silicone oil, featuring high consistency, strong mold release capacity, long-acting lubricity, dense film-forming property, excellent resistance to high and low temperatures (-50~200℃) and low volatility, as well as high chemical inertness. Different from low/mid-viscosity silicone oil which is mainly used for dilution, thin coating and defoaming, it is mainly suitable for industrial and civil scenarios requiring thick film coverage, long-acting performance, anti-adhesion and slip resistance, and strong mold release. It is also the most versatile and practical viscosity grade among high-viscosity silicone oils.

When producing silicone rubber with vinyl silicone oil and hydrogen-containing silicone oil for a target product hardness of approximately Shore D 60, how to select the raw materials?

When producing silicone rubber with a Shore D 60 hardness using vinyl silicone oil and hydrogen-containing silicone oil as the crosslinking system, the core selection criteria for vinyl silicone oil lie in controlling its vinyl content (mole fraction/mass fraction) and base viscosity, while matching the hydrogen content and addition ratio of hydrogen-containing silicone oil. It is essential to ensure the crosslinking density is suitable for the crosslinked network requirements of Shore D 60 hardness. Below is a precise and actionable selection scheme, including viscosity, vinyl content, grade references and proportioning principles, applicable to the production process of common addition-cure silicone rubber:

What fields are high-viscosity dimethyl silicone oils generally used in?

High-viscosity dimethyl silicone oils (generally referring to those with a viscosity of ≥10000 cSt, common specifications are 10000/50000/100000/300000 cSt, and ultra-high viscosity can reach more than 1,000,000 cSt) rely on their excellent viscosity-temperature property, high and low temperature resistance, lubricity, hydrophobicity, mold release property and chemical stability. With high viscosity, they also have stronger film adhesion, damping and buffering performance, and long-term lubrication and sealing effects. As core additives in the industrial, daily chemical, electronic and other fields, their core applications focus on scenarios requiring long-term lubrication, stable mold release, damping and buffering, and sealing protection. The following are the specific applications and technical key points by field, with typical viscosity selection references attached:

Qiangli Chemical Product Manual (Latest)

Qiangli Chemical Product Manual (Latest)

What are the main applications of ordinary dimethyl silicone oil with viscosity ranging from 300,000 to 1,000,000 cSt?

Overview of Core Applications of Ordinary Dimethyl Silicone Oil (300,000–1,000,000 cSt) Dimethyl silicone oil with a viscosity of 300,000 to 1,000,000 cSt is classified as ultra-high viscosity. It features excellent film-forming property, outstanding damping effect, long-lasting lubrication, and high stability, making it irreplaceable in mechanical damping, mold release, electronic sealing, high-end personal care, and other fields.

ABOUT US

About Us

Huangshan Qiangli Chemical Co., Ltd

◎ Huangshan Qiangli Chemical Co., Ltd. is a professional chemical company, integrating R&D, innovation, production and sales. QiangLi Chemical is already a relatively well-known brand in the silicone industry, and is committed to creating high-quality silicone products: dimethyl silicone oil, vinyl silicone oil, amino silicone oil, emulsified silicone oil, hydroxy silicone oil, hydrogen silicone oil and textile silicone oil, etc. High purity silicone oil, better technology, better silicone oil.

◎ Reputation comes from service! We have established a customer-centered service system. It is our goal to improve our own quality, product quality and service level. Through professional and technical training of sales engineers to provide customers with timely and thoughtful professional and technical services, whether it is product sales, technical guidance or on-site service, we do everything we can to do better. Strongly adhere to the customer income to solve customer needs as the company's top priority!

◎ Sustainable development comes from communication and cooperation! We hope to establish a strategic partnership, seek common development, strive to open up and forge ahead. For the cause of common sustainable development, Qiangli chemical will accompany you with success.

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Our product advantages

supplier Advantage

The company's annual output exceeds 55,000 tons.Silicone products: methyl silicone oil, vinyl silicone oil, amino silicone oil emulsified silicone oil, hydroxyl silicone oil, hydrogenated silicone oil and textile silicone oil, etc.

Technology Advantage

Two major R&D centers, high-end testing technology, benchmarking international brand production equipment and technology.

Team Advantage

High-end technology R&D talents, professional production team, technical sales team.

Quality Advantage

Benchmarking and replacing international brands, produced from new materials, with high purity, low acid value, low volatile matter, and no contain trimethylamine, no potassium , no sodium ions, etc.

Monitor Advantage

28 years of practical experience, fully automated continuous production line, 24-hour real-time production monitoring.

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