Silicone oil generally refers to a linear polysiloxane product which remains in a liquid state at room temperature and has the following structural formula: wherein R is an alkyl group, an aryl group, and R' is an alkyl group, an aryl group, a hydrogen group, a carbon functional group, a polyether chain, etc. X is an alkyl group, an aryl group, an alkenyl group, a hydrogen group, a hydroxyl group, an alkoxy group, an acetoxy group, a chlorine group V, a carbon functional group, a polyether chain, etc.; n, m = 0, 1, 2, 3...
The most commonly used silicone oil, the organic group is all methyl, called methyl silicone oil. The organic group may also be substituted for a portion of the methyl group with other organic groups to improve the properties of the silicone oil and to suit a variety of different applications. Other common groups are hydrogen, ethyl, phenyl, chlorophenyl, trifluoropropyl and the like. In recent years, organically modified silicone oils have been rapidly developed, and many organically modified silicone oils with special properties have appeared.
Silicone oil is divided into methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl according to chemical structure. Base silicone oil, methyl vinyl silicone oil, methyl hydroxy silicone oil, ethyl hydrogen silicone oil, hydroxyl hydrogen silicone oil, cyanide-containing silicone oil, etc.; from the use, there are damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulating oil, Heat transfer oil, brake oil, etc.
CAS No: 63148-62-9
1. Amino modified silicone oil
The amino-modified silicone oil is a polydimethylsiloxane containing an amino group in a side chain or a terminal group, and is also called an amino silicone oil. This type of silicone oil is an essential ingredient for textile soft finishing agents. Because of its good adsorption and compatibility, when the amino silicone oil is emulsified into a microemulsion by a suitable surfactant, it can be used as a fabric soft finishing agent to improve the softness of the fiber material. After finishing various textiles, amino silicone oil can also be used in the fields of cosmetic additives, coating additives, resin modifiers and brighteners.
2. Epoxy modified silicone oil
A class of silicone oils containing an epoxy group in the side chain or terminal group of the polydimethylsiloxane is referred to as an epoxy-modified silicone oil. The use of such modified silicone oil can improve the elasticity of the fabric. If such silicone oil is used together with the polyether modified silicone oil, the finished fabric has better softness, and has the characteristics of anti-wrinkle and washability, and is blended with the amino-modified silicone oil. Use, can make the fabric have a better hand.
3. Polyether modified silicone oil
A polydimethylsiloxane containing a polyether group (polyoxyethylene group, polyoxypropylene group, fatty alcohol polyoxyethylene polyoxypropylene ether group) in a side chain or a terminal group is called a polyether modified silicone oil. It can improve the moisture absorption properties of fabric finishing. Since the polyether group is hydrophilic, the hydrophilicity of the polyether silicone oil increases, and the hydrophobic group and the hydrophilic group are simultaneously present in the molecule, so that the silicone oil exhibits good water solubility and is not used during use. There will be problems such as demulsification and oil bleaching. Secondly, the introduction of the polyether group also increases the hygroscopicity, antistatic property and easy decontamination of the finished fiber or fabric, so the polyether silicone oil is used more in the clothes softener, cosmetics, and shampoo. Another major use of polyether silicone oils is as a stabilizer for polyurethane foams, also known as a foam stabilizer, to adjust the bubble drop of polyurethane foam. Polyether silicone oil is the most active and effective type of active silicone softener before the development of amino silicone oil softener.
4, shuttle-based modified silicone oil
A polydimethylsiloxane containing a shuttle group in a side chain or a terminal group is referred to as a shuttle-modified silicone oil. Such modified silicone oils can be used in fiber treatment agents, automotive polishes, paint additives, and the like. The shuttle-modified silicone oil is used in combination with the amino silicone oil, and the fiber treatment can increase the durability and is not easy to fall off during washing.
5, alcohol light base modified silicone oil
The polydimethylsiloxane in which the alcohol is contained at the base end or in the main chain and is contained in the main chain is referred to as an alcohol light-based modified silicone oil. Since the light chain between the end of the molecular main chain or the molecular chain is reactive, it is crosslinked by thermal energy. Such silicone oil can be used as a structure control agent in the processing of silicone rubber, and can also be used for anti-corrosion treatment such as paper. Copolymerization with alcohol light-based modified silicone oil instead of a part of ethylene glycol can improve the resilience, softness, tear strength, abrasion resistance, heat resistance and other properties of the polymer fiber and film, and improve the polyurethane Cool formability.
6, phenol light-based modified silicone oil
The polydimethylsiloxane which is phenol light-base terminated or contains a phenol light group in the main chain belongs to a phenol-based modified silicone oil. The phenol group in the modified silicone oil molecule has high reactivity and heat resistance, so the emulsion has good stability and wide useability. If the amino-modified silicone oil is mixed with the phenol-based modified silicone oil, it can be compounded into an oil agent for synthetic fibers having excellent heat resistance and mold release property.
7, sulfhydryl modified silicone oil
The polydimethylsiloxane containing a mercapto group in the side chain or the terminal group is called a mercapto-modified silicone oil, and the mercapto group in the molecule can be bonded to the silicone containing an unsaturated bond under the action of ultraviolet light and a photopolymerization initiator. The compound undergoes a radical addition reaction. These silicone oils are the main components of UV-based, electron beam-curable silicone resin rubber. They are widely used in anti-adhesive barrier coatings and can also be used as release agents.
8. Other modified silicone oil
In addition to the above modified silicone oil, there are many other types of silicone oil, such as polydiorganosiloxane-polyether block copolymerized modified silicone oil, alkyl and polyether co-modified silicone oil, alkyl ether polyether silicone oil, ring Oxypolyether silicone oil, amino polyether block silicone oil, glyceryl ether based silicone oil, phosphoric acid based silicone oil, glycopolyether silicone oil, beet base silicone oil, and the like. These silicone oils have different functional groups and therefore have special properties, but have less market share due to less demand.
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