How to form conventional hydroxy silicone oil:

1. Siloxane ring body: Ring-opening polymerization of D3, D4, etc., capped with water under the catalysis of acid or alkali.

2. Hydroxyl-terminated organosilicon oil is prepared by hydrolyzing and dechlorinating dimethyldichlorosilane.

3. Use hydroxysiloxane (commonly known as linear body) for dehydration polymerization.

Application mechanism:

Hydroxyl silicone oil is mainly adsorbed by the hydroxyl group and the oxygen in the silicone chain and the anchoring effect of the hydroxyl group, carboxyl group, amino group and other polar groups on the fabric, because the electron cloud distribution of oxygen in the silicone chain is relatively uniform , its polarity is much weaker than that of the hydroxyl group, so as long as the hydroxyl silicone oil still relies on the adsorption of the silicone hydroxyl group, it can fill the flaws on the surface of the fabric when it is adsorbed on the fabric, and at the same time, the methyl group faces outward to give the fabric a slippery texture. It has a cool hand feeling, but due to the poor adsorption of hydroxy silicone oil, the siloxane chain is prone to migration, the degree of crosslinking with the fabric is low when it is cured into a film, and the softness is not good. In order to provide better slippery For hand feel and softness, it is necessary to increase the molecular weight of hydroxy 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, high molecular weight can also reduce migration phenomenon, in order to improve the smooth feel and wash resistance of hydroxy silicone oil.



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