As an important textile auxiliary, the discoloration problem of amino silicone oil directly affects product quality and market value. Yellowing not only damages the appearance of the product, but also indicates the deterioration of material performance.
Oxidation reaction is the primary factor causing amino silicone oil to turn yellow. Amino groups are easily oxidized in the air to form chromophores. Experimental data show that at 60°C, the chromaticity value of amino silicone oil increases by 3.5 levels after exposure for 72 hours. For every 10°C increase in temperature, the oxidation rate increases by 2.3 times. Ultraviolet irradiation accelerates this process. After 24 hours of UV irradiation, the chromaticity change is 60% higher than that of the dark sample.
Insufficient thermal stability is another key reason. Amino silicone oil will break and rearrange its molecular chain at high temperature to form conjugated chromophores. Studies have shown that when the temperature exceeds 150°C, the yellowing index increases by 0.8 for every 10°C increase. Storage time is also an important influencing factor. After 6 months of storage at 40°C, the chromaticity value increases by an average of 2.8 levels.
To solve this problem, the industry has developed a variety of solutions. By introducing antioxidants, the yellowing resistance of amino silicone oil can be improved by 40%; by using molecular structure modification technology, the thermal stability temperature can be increased by 25°C; by optimizing storage conditions, the color change can be reduced by 65% under the protection of inert gas. The latest nano-coating technology has increased the color retention rate of the product to more than 90% under high temperature and high humidity environments.
The yellowing problem of amino silicone oil is no longer a technical bottleneck. Through scientific formula design and process optimization, it is entirely possible to obtain products that maintain excellent performance and have excellent appearance stability. These technological advances are driving the textile auxiliary industry to higher quality development.