Shaanxi BLOOM Tech Co., Ltd. is one of the most experienced manufacturers and suppliers of pure silicone oil cas 63148-62-9 in China. Welcome to wholesale bulk high quality pure silicone oil cas 63148-62-9 for sale here from our factory. Good service and reasonable price are available.
Pure silicone oil is generally colorless (or light yellow), tasteless, non-toxic and nonvolatile liquid. Silicone oil is insoluble in water, methanol, ethylene glycol and 2-ethoxyethanol. It is miscible with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene, and slightly soluble in acetone, dioxane, ethanol and butanol. It has very low vapor pressure, high flash point and ignition point, and low freezing point. With the different number of chain segments n, the molecular weight increases, and the viscosity also increases. This silicone oil can have various viscosities, from 0.65 centistokes to millions of centistokes. If low viscosity silicone oil is to be prepared, acidic clay can be used as catalyst, and the polymerization can be carried out at 180 ℃, or sulfuric acid can be used as catalyst, and the polymerization can be carried out at low temperature to produce high viscosity silicone oil or viscous substances with alkaline catalyst.
|
CF |
C6H18OSi2 |
|
EM |
162 |
|
MW |
162 |
|
m/z |
162 (100.0%), 163 (10.2%), 164 (6.7%), 163 (6.5%) |
|
EA |
C, 44.38; H, 11.17; O, 9.85; Si, 34.59 |
|
|
|
Silicone oil has heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and small surface tension. In addition, it has low viscosity temperature coefficient, high compression resistance, and some varieties also have radiation resistance.
Silicone oil usually refers to linear polysiloxane products that can be kept in liquid state at room temperature. It is generally divided into methyl silicone oil and modified silicone oil. The most commonly used silicone oil - methyl silicone oil, also known as ordinary silicone oil, whose organic groups are all methyl, has good chemical stability, insulation and hydrophobic properties. It is prepared by hydrolysis of dimethyldichlorosilane with water to obtain a primary polycondensation ring. The ring is cracked and rectified to obtain a low ring. Then the ring, capping agent and catalyst are put together for polymerization to obtain mixtures with different polymerization degrees. Silicon oil can be prepared by vacuum distillation to remove the low boiling matter.
Pure silicone oil, also known as polydimethylsiloxane, is a type of polymer compound composed of alternating silicon and oxygen atoms forming a main chain, and organic groups (mostly methyl) connected to silicon atoms. It is colorless, transparent, odorless, non-toxic, and has a series of excellent properties such as high and low temperature resistance (-50 ℃ to+180 ℃ for long-term use), low surface tension, excellent lubricity, good electrical insulation, strong chemical stability, and physiological inertness.
Cosmetics and Personal Care
Silicone oil is one of the most important organic silicon raw materials in the cosmetics industry, with main varieties including polydimethylsiloxane, polydimethylsiloxane, polydimethylsiloxane, amino modified silicone oil, polyether modified silicone oil, emulsified silicone oil, etc.
In terms of skincare products, silicone oil has excellent lubricity. After application, it can form a soft and breathable protective film on the surface of the skin, which not only locks in moisture but also does not completely close pores, keeping the skin tender and smooth.
In face cream, lotion and sunscreen, the amount of silicone oil is usually 1.0% -3.0%, which can significantly improve the smoothness and ductility of the skin. Methyl silicone oil also has the characteristics of high surface activity, low surface tension and easy spreading, which can prevent the product from whitening and dust-proof. It often replaces traditional oily raw materials such as paraffin wax and vaseline, and is used in cream, lipstick and other products. In addition, silicone oil has a slow release and flavor fixing effect on essence and flavor, with a long fragrance retention period, strong chemical inertia, and no adverse effect on active ingredients. In terms of hair care products, silicone oil is widely used as a softener in shampoo, conditioner, hair gel, mousse, etc.
It can form a hydrophobic protective film on the surface of hair, making it smooth, tangle free, and shiny. At present, the amount of silicone oil used in shampoo is generally 0.1% -0.5%. Polyether modified silicone oil can also improve the moisture absorption performance of fabrics and hair. When used in combination with amino modified silicone oil, it can give fabrics a better hand feel.
In terms of cosmetics, pure silicone oil can improve the smearability and extensibility of products such as foundation make-up, so that it can evenly cover the skin and avoid powder sticking. Adding methyl silicone oil to lipstick can improve color dispersion, enhance stretchability and user experience. Silicone oil also has a certain water resistance.
It can be used in waterproof eye black and waterproof lipstick to enhance the waterproof performance and extend the retention time of the product on the skin.
In shaving cream, the amount of silicone oil used is 0.5% -2.0%, which provides lubrication between the skin and the blade, eliminating pain.
There is currently no conclusive scientific evidence to suggest that the normal use of silicone oil containing cosmetics will have adverse effects on the skin regarding the suspicion of "silicone oil clogging pores". Silicone oil has good breathability and will not completely close pores, but can actually reduce skin problems caused by the use of cosmetics.
Medical and Health Care
Silicone oil plays an irreplaceable role in the medical field due to its physiological inertness, non toxicity, odorlessness, and good biocompatibility.
Defoamer and Gastrointestinal Application: Utilizing the defoaming effect of silicone oil, dimethyl silicone oil can be used as a drug for treating pulmonary edema and swelling, as well as an artificial heart lung machine defoamer. During gastrointestinal endoscopy and various endoscopic surgeries, oral administration of dimethyl silicone oil can reduce the amount of gas in the gastrointestinal tract, which is beneficial for clear vision and smooth operation.
Ophthalmic surgery: Silicone oil is commonly used for retinal detachment repair surgery. Its special viscosity and transparency enable it to replace vitreous humor, help maintain the normal position of the retina, promote recovery, and are key materials in ophthalmic surgery.
Dermatological medication: Silicone oil can be used to make medical ointments and base agents for protective lipids. The resulting products can protect the skin, prevent dermatitis, eczema, or bedsores. Dimethyl silicone oil cream can also prevent the skin from being corroded by acids, alkalis, salts, and various detergents.
Silicone oil is also used in the formulation of topical medications for treating burns and skin diseases, as well as silicone toothpaste with dual effects of anti caries and anti allergy.
Obstetrics and Gynecology: Silicone oil is used as a lubricant in gynecological surgeries, such as cystoscopy and endometrial removal surgery.
Pharmaceutical excipients: Silicone oil can be used as an excipient and additive in drugs to prevent the tablets from absorbing moisture and prolong their efficacy. It can also be used as a sterilizing oil for dental and surgical tools, artificial eye lubricant, bladder pain reliever, etc.
Electronic and Electrical
Silicone oil has high and low temperature resistance, good oxidation stability, high flash point, flame retardancy, excellent dielectric properties, and its dielectric properties and viscosity are less affected by temperature. It is an excellent electrical insulation material in the electronics and electrical industry.Insulation medium: widely used in motors, electrical appliances, and electronic instruments as an insulation medium that is resistant to temperature, arc, corona, corrosion, moisture, and dust. Used as an impregnating agent for transformers, capacitors, and TV scanning transformers.
Compared to mineral oil transformers, transformers filled with silicone oil can reduce volume, increase power, have a longer operating life, and are non-toxic and pollution-free. Methyl phenyl silicone oil can replace the carcinogenic polychlorinated biphenyls that have been banned by many countries as capacitor oil, with higher capacity, lower power loss, higher operating temperature, and stronger safety.
Coolant and heat carrier: Pure silicone oil is also used as a heat exchange system, high-temperature bath, and heat carrier for precision instruments and meters.
Construction Engineering
Building silicone oil forms an elastic film through the condensation of hydroxyl active groups, and a surface waterproof layer is constructed with methyl groups. The penetration depth can reach 3-5mm, and it is suitable for porous substrates such as concrete and mortar.Widely used for waterproofing and moisture prevention in building exterior walls, tunnels, highway bridges, railway bridges and culverts, basements, kitchens, bathrooms and other fields.
Adding 0.1% -0.15% silicone oil lotion in the mortar can improve the water repellency and wind erosion resistance of the mortar and reduce the leakage rate of the external wall. Adding 3% -4% can also improve the superhydrophobicity and mechanical properties of high-strength concrete.
In addition, silicone oil can also be used as a release agent in the production of concrete products, a lubricant for construction machinery and equipment, sealing roofs, foundations, and windows, and providing waterproof barriers.
Advantage
The viscosity temperature property is the best among liquid lubricants, and the viscosity changes little in a wide temperature range. Its freezing point is generally less than - 50 ℃, and some are as high as - 70 ℃. After long-term storage at low temperatures, the appearance and viscosity of the oil products do not change. It is a base oil with high temperature, low temperature and wide temperature range.
Excellent thermal oxidation stability, such as thermal decomposition temperature>300 ℃, small evaporation loss (150 ℃, 30 days, evaporation loss is only 2%), oxidation test (200 ℃, 72h), small changes in viscosity and acid value.
Excellent electrical insulation, volume resistance, etc. do not change in the range of normal temperature~130 ℃ (but no water in the oil).
It is a non-toxic oil with low foaming property and strong anti foaming property, which can be used as defoamer.
Excellent shear stability, with the function of absorbing vibration and preventing vibration transmission, pure silicone oil can be used as damping fluid.
Shortcoming
The lubricity of silicon oil is poor, especially for steel friction pairs.
The thermal expansion coefficient of silicone oil is large (overpressure may occur).
The gas solubility is high (it is difficult to design the gas seal device).
Certain hygroscopicity (water content higher than 100 × After 10-6, the electrical performance drops sharply).
Low surface tension (easy to leak from the machine).
There are two main methods for preparing silicone oil: hydrolysis condensation method and siloxane catalytic equilibrium method.
Method 1: Hydrolysis condensation method
Alcoholysis: Add 100 parts by weight of organic silicon high boiling material to the reaction kettle at 20 ℃ -25 ℃, and then drip 30-40 parts by weight of raw material methanol with a weight percentage of 80% -90%. Add the mixture dropwise for 6-8 hours, starting at a rate of 3 parts per hour, and gradually increasing to 10 parts per hour after 2-3 hours. The hydrogen chloride gas generated during the alcoholysis process is absorbed by spraying water.
Neutralization: At room temperature, add 15-18 parts by weight of methanol cosolvent and an equal amount of urea to the above material. The neutralization temperature is 42 ℃ -50 ℃, and the neutralization time is 0.5 hours to neutralize hydrochloric acid in the material. By layering, crude high boiling silicone oil was obtained, pH=4-5, Then add 1.0-1.5 parts by weight of 27% ammonia water and continue to neutralize to pH 6-8.
Filtering: Filter the neutralized material to obtain the finished silicone oil.
Method 2: Siloxane Catalytic Equilibrium Method
Ingredients: Add methylchlorosilane and hexamethyldisiloxane (MM) to the reaction vessel, with a mass ratio of 1: (1-2).
Reaction: Under stirring, slowly add concentrated sulfuric acid, then slowly add water, control the dripping speed of water, and allow the reaction to proceed at a certain temperature. After the reaction is complete, let the reactants stand and separate into layers, and wash the separated upper product with water until neutral.
Distillation: The pure silicone oil after washing with water is subjected to vacuum distillation, and the fractions within a certain temperature range are collected to obtain hydrogen containing silicone oil.
FAQ
Is silicone oil safe to use?
Silicone-based lubricants are long-lasting, hypoallergenic formulations. They're thick and water-resistant, keeping things smooth and slippery for a good while before you have to reapply. While silicone is preservative-free, making it generally sensitive-skin safe, it could still cause irritation.
What kind of oil is silicone oil?
Silicone oil is defined as a series of inert and thermally stable synthetic liquids, chemically known as polydimethylsiloxane, which possess electrical properties similar to mineral oil. The molecular structure of silicone oil allows for variations in organic groups, influencing its molecular weight and viscosity.
Is silicone oil good for scars?
Silicone may hydrate the scar tissue and reduce the production of collagen fibres (see scar massage information sheet). It has also been shown to reduce redness and to make the scar flatter, softer and paler. How do I use the silicon? Your therapist will give you instructions for how to use the silicone.
What is the use of silicone oil?
Additionally, silicone oil is used in general medicine and surgery. Because of silicone oil's water repellent and lubricating properties, it is considered an appropriate material to maintain surgical instruments. They are also used in digital rectal examinations (DRE).
Hot Tags: pure silicone oil cas 63148-62-9, suppliers, manufacturers, factory, wholesale, buy, price, bulk, for sale, D Melibiose, Sodium N cyclohexylsulfamate CAS 139 05 9, Bis 4 hydroxyphenyl Sulfone CAS 80 09 1, Yeast Extract Powder CAS 8013 01 2, nonivamide powder, Sodium Polyacrylate Solution CAS 9003 04 7