The secret of the bright white of chemical fiber products is here
Polyester fabric is a kind of chemical fiber clothing fabric which is widely used in daily life.
The utility model has the advantages of good wrinkle resistance and shape preservation, so it is suitable for making outdoor articles such as jackets and clothing, all kinds of luggage and tents, etc.
Polyester itself has a certain whiteness, but in order to meet the specific whiteness and color requirements, it is necessary to use fluorescent whitening agent whitening.
The structure and characteristics of polyester determine that its whitening is difficult, and it can not be whitened by hydrophilic fluorescent whitening agent.
A stable dispersion suspension is generally made from a non-aqueous dispersed powder fluorescent brightener.
Then, by special methods such as hot melt dyeing, high temperature and high pressure dyeing or carrier dyeing, the fluorescent brightener diffuses into the fiber (depending on the thermal motion diffusion and sublimation into the human fiber) and uniformly distributed in polyester fiber.
At this point, fluorescent brighteners can absorb ultraviolet rays from natural light and then convert them into blue-purple fluorescence.
Blue and yellow are complementary colors, and the mixture of the two becomes white, so fluorescent whitening agents can significantly remove the old yellow.
At the same time, ultraviolet light belongs to the band invisible to the naked eye, when it is transformed into blue light, it virtually increases the total amount of reflection of the object, thus playing a brightening effect, making polyester look whiter and brighter.
In the process of chemical fiber production, the appropriate whitening agent must be selected according to the process temperature and material, and the appropriate amount of addition should be controlled in the production process to ensure that the whitening agent and chemical fiber production raw materials are fully mixed and evenly mixed.
Only in this way can the whiteness of chemical fiber be increased to the desired state. If there is a problem in the production process, you can contact the service personnel and technicians in time to give the correct solution based on years of service experience.
Let you use brightener without worry.