Conventional methods for preparing hydroxyl silicone oil include:

1. Siloxane ring: ring opening polymerization of D3, D4, etc., which is terminated with water under the catalysis of acid or base.
2. The hydroxyl terminated organic silicone oil is prepared by hydrolysis and dechlorination of dimethyldichlorosilane.
3. Hydroxysiloxane (commonly known as linear body) is used for dehydration polymerization.

Application mechanism:

Hydroxyl silicone oil is mainly used to adsorb the fabric. It is mainly hydroxyl and the anchoring effect of oxygen in the silicon oxygen chain with polar groups such as hydroxyl, carboxyl and amino groups on the fabric. Since the distribution of the extranuclear electron cloud of oxygen in the silicon oxygen chain is relatively uniform, its polarity is much weaker than that of hydroxyl, so as long as the hydroxy silicone oil still relies on the adsorption of silicon hydroxyl in its job, it can fill the defects on the fabric surface when it is adsorbed on the fabric, At the same time, methyl outward gives the fabric a smooth feel. However, due to the poor adsorbability of hydroxyl silicone oil, the siloxane chain forging is prone to swimming, and the crosslinking degree with the fabric is low and the softness is also poor when the film is solidified. In order to provide a better smooth feel and softness, it is necessary to increase the molecular weight of hydroxyl silicone oil to form more continuous silicone film structures between siloxane chain forging and chain forging through ultra-high molecular weight, At the same time, the high molecular weight can also reduce the migration phenomenon, so as to improve the smoothness of the handle and the washability of the hydroxyl silicone oil.

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